Question 1

danfoss compressor -nomenclature

Accepted Answer

Example
L	LZ	013	T	4	L	Q	9	B
1	2	3	4	5	6	7	8	9
Explaination
1	Application	L: Low temprature, M: Medium temperature
2	Refrigerant	LZ:R404A,R507,R452A,R448A,R449A,R454C,R455A
3	Nominal capacity	BTU/H@60HZ 013: 013*1000=13000BTU
4	Model Variation	Design for refrigeration
5	Motor Voltage	2: 200-220v/3ph@50hz & 208~230v/3ph@60hz 4:380-415v/3ph@50hz &460v/3ph@60hz 9:380v/3ph@60hz
6	Motor protection	L: internal motor protection
7	connection	Q: rotolock connections,screw terminals P: Brazed connections, Spade terminals C: Brazed connections, screw terminals T: Rotolock connections,screws terminals
8	configuration	Code	Oil sight glass	Oil equalisation	Oil drain	LP gauge port	Gas Equalisation port
9	configuration	Threaded	None	Schrader	None	None
9	Oil charging	Blank: PVE oil B: POE oil

danfoss compressor information

https://www.dm-compressor.com/Danfoss-compressor-info-id49960065.html

Question 2

Hanbell compressor -nomenclature RC2 series

Accepted Answer

Hanbell compressor

I. RC2 Series (Semi-Hermetic Single-Stage Screw Refrigeration Compressor)
Example
RC	2	-	260	B	-	Z	(P)
1	2		3	4		5	6
Explanation
1	Product Series：Semi-Hermetic Screw Refrigerantion Compressor
2	Generation: 2nd Generation (Mainstream)
3	Displacement: Theoretical Displacement at 50Hz (m³/h)
4	Motor Code: A=Special for R134a; B=Universal (R22/R404A/R407C, etc.)
5	Working Condition: Z=Medium Temperature; W=Low Temperature; G=High Temperature Heat Pump; T=Ultra-High Temperature Heat Pump
6	Configuration: P=Parallel Machine/Side Discharge Without Filter Oil Separator; No P=Single Machine Standard

II. RE Series (High-Efficiency Single-Stage Screw Refrigeration Compressor)
Example
RE	-	620	B	(P)
1		2	3	4
Explanation
1	Product Series: High-Efficiency Air Conditioning/Refrigeration Special Screw Compressor
2	Displacement: Theoretical Displacement at 50Hz (m³/h)
3	Motor Code: A=R134a Water-Cooled; B=R134a Air-Cooled/Heat Pump Universal
4	Structure: P=Side Discharge Without Filter Oil Separator; No P=Standard
Additional	W/FW	W=Water-Cooled; FW=Flooded Water-Cooled
Additional	H/FH	H=Air-Cooled; FH=Flooded Air-Cooled

Part2 products info

https://www.dm-compressor.com/Hanbell-compressor-specification-id41738855.html

Question 3

Copeland scroll compressor -nomenclature

Accepted Answer

Daming Refrigeration will help you decipher the hidden parameters in Copeland compressor models.

Part 2 Copeland scroll compressor

Example

Z	R	81	K	C	E	-	T	F	D	-	522

1	2	3	4	5	6		7	8	9		10
Explanation
1	Z=scroll compressor, V = China mainland scroll compressor
2	R=air conditioning /B= Refrigeration high & mid temperature/F=low temperature with liquid injection port P= air conditioning R410A
3	Cooling capacity BTU/H at working condition ARI(60HZ) HT:7.2°C/54.4°C MT:-6.7°C/48.9°C LT-31.7°C/40.6°C
4	coefficient K=1000/M=10000
5	Updated version code
6	Luricant type, E=POE oil/ blank= mineral oil
7	Motor type , T= three phase / P=single phase
8	Motor protection, F= internal projection, W= module
9	Power supply , C=200-220V@50HZ or 208~230V@60HZ / D=380~420V@50HZ or 460V@60HZ E=575V@60HZ / J=220~240V@50HZ or 265V@60HZ /P=380V@50HZ / 7=380V@60HZ
10	Configuration code 522: soldering /fix speed /with mounted feet 523: flaring /without sight glass 420: soldering / tandem/ without mounted feet 422: soldering /tandem /with mounted feet 433: soldering /digital tandem/without mounted feet 550: soldering /with sight glass 551: flaring/ with sight glass

Copeland scroll compressor info
https://www.dm-compressor.com/Copeland-Compressor-Information-id42048855.html

Question 4

Bitzer compressor -nomenclature

Accepted Answer

As the heart of a refrigeration system, the proper selection of the compressor is crucial for the system's efficient operation.

DMZL will analyze the naming conventions of mainstream compressors on the market to help you understand the information
contained in compressor model numbers.

Part1 Bitzer reciprocating compressor

Example

4	N	E	S	-	20	Y	-	40P

1	2	3	4		5	6		7
Explanation
1	Number of compressor cylinder "4"= 4 cylinder
2	Code of bore*stroke
3	E=Ecoline series
4	S=Centrifugal lubrication Blank= Pump lubrication
5	Motor size
6	Y = compressor charing polyolester oil
7	Motor code

Bitzer compressor innformation

https://www.dm-compressor.com/Bitzer-Semi-Hermetic-Compressor-Informarion-id47094065.html

Question 5

Get to know scroll compressor

Accepted Answer

Scroll Compressors: High-Efficiency, Low-Noise Choice for Home & Commercial Refrigeration

In the era of pursuing high efficiency, energy saving and quiet operation, scroll compressors have become the core choice of home and commercial refrigeration systems with their outstanding performance. As a high-efficiency representative in rotary refrigeration compressors, they are widely used in household air conditioners, multi-connected machines, commercial cold storage and other scenarios, bringing stable, quiet and energy-saving refrigeration experience to users and enterprises. DMZL will help you understand scroll compressors and their mainstream brand advantages for wiser purchase decisions.

The core advantage of scroll compressors lies in their unique structural design, which solves the pain points of traditional compressors such as high noise and low efficiency, becoming the quality benchmark in the refrigeration industry. They adopt the meshing motion of static and dynamic scroll plates, with volume efficiency up to over 95% and excellent energy-saving performance, especially when matched with frequency conversion technology. Meanwhile, they operate stably with low noise (below 55dB(A)), simple structure, long service life (15-20 years) and strong adaptability, compatible with various environmental protection refrigerants and suitable for diverse scenarios.

Choosing a high-quality scroll compressor, the brand is the key guarantee.
The following mainstream brands have stood the market test, with reliable quality and perfect after-sales service:

Copeland: As a global leader in refrigeration compressors, Copeland’s scroll compressors have excellent anti-liquid return ability and high energy efficiency, with optimized scroll plate design and advanced frequency conversion technology, becoming the first choice for high-end air conditioning and commercial refrigeration projects.

Danfoss: Famous for environmental protection and wide working condition adaptation, Danfoss scroll compressors perfectly match various environmental protection refrigerants and maintain efficient operation under different temperature and pressure conditions, suitable for commercial and industrial refrigeration scenarios.

Daikin: As a pioneer of multi-connected air conditioning technology, Daikin’s scroll compressors have high IPLV value and efficient energy saving, with excellent performance in multi-connected systems, widely used in high-end household and commercial air conditioning fields.

Embraco: A well-known global refrigeration compressor brand, Embraco has shifted from original external processing to independent R&D and production after acquiring Changzhou Xecom, with compact and energy-saving scroll compressors suitable for refrigeration equipment and household air conditioners.

Bitzer: As a well-established and powerful compressor manufacturer, Bitzer has begun investing in and building factories in China in recent years, and its presence as a new force in scroll compressors should not be underestimated.

Invotech : As a leading domestic scroll compressor brand, Invotech focuses on scroll compressor R&D and production, covering heat pump, commercial air conditioning and other series, with innovative technologies such as jet enthalpy increase and full DC frequency conversion, suitable for various industrial and commercial scenarios.

LG: A well-known South Korean brand, LG’s scroll compressors are equipped with advanced DC inverter technology, featuring high energy efficiency and ultra-low noise, with a variable frequency range of 10-165Hz, which can maintain stable operation in extreme climates and is widely used in multi-connected air conditioners and household air conditioning systems.

Hitachi: A pioneering Japanese brand in scroll compressors, Hitachi’s scroll compressors adopt high-precision grinding rotors and advanced oil separation technology, with stable operation, long service life and excellent energy-saving performance, suitable for commercial air conditioning and industrial refrigeration scenarios

Whether you are a household user pursuing quiet and energy-saving experience or an enterprise needing efficient and stable refrigeration equipment, scroll compressors can bring you great value. DMZL has cooperated with the above mainstream brands and have own scroll compressor production line, providing high-quality products and professional solutions.

Question 6

Get to know the Centrifugal Refrigeration Compressors

Accepted Answer

Centrifugal Refrigeration Compressors – The Powerhouse for Large-Scale Refrigeration

When it comes to large-scale refrigeration scenarios – such as large shopping malls, office buildings, petrochemical plants, and large cold storage centers – centrifugal refrigeration compressors (turbo compressors) are undoubtedly the "core powerhouse". With their large cooling capacity, stable operation and low energy consumption, they can easily meet the large-scale refrigeration needs of large buildings and industrial production, becoming an indispensable core equipment in large-scale refrigeration systems.

What are the unique advantages of centrifugal compressors that make them stand out in large-scale scenarios? First, the large cooling capacity – a single centrifugal compressor can provide thousands of kilowatts of cooling capacity, which is far beyond the reach of reciprocating and general rotary compressors, and can meet the refrigeration needs of large-scale spaces and industrial processes with one machine. Second, stable operation and low noise – with few moving parts, the operation is extremely stable, the noise is low, and it can create a quiet environment for large shopping malls and office buildings. Third, energy saving and environmental protection – the efficient compression technology can greatly reduce energy consumption, and at the same time, it can be compatible with various environmental protection refrigerants, complying with the global environmental protection policy, and helping enterprises reduce carbon emissions and energy costs.

For large-scale refrigeration projects, choosing a reliable centrifugal compressor brand is crucial, and the following mainstream brands have been tested by the market: York, with advanced multi-stage compression technology, has high stability, and can operate stably for a long time in complex industrial environments; Trane’s products have reliable performance and full working condition adaptation, and can maintain efficient operation under different load conditions; Carrier, as a well-known brand in the refrigeration industry, has energy-saving and long service life advantages, reducing the total cost of ownership for enterprises; McQuay’s magnetic levitation technology leads the industry, with extremely high energy efficiency, which can save a lot of energy costs for large-scale projects; Hanbell’s centrifugal compressors have powerful cooling capacity and environmental protection performance, combining localized R&D and production, providing more suitable solutions for Chinese enterprises.

Large-scale refrigeration projects require stable, efficient and energy-saving core equipment. Centrifugal refrigeration compressors, with their unique advantages, have become the first choice for large-scale refrigeration scenarios. Choose a well-known brand, and let the powerful cooling capacity escort your large-scale project operation.

DMZL has always been committed to providing customers with high-quality refrigeration solutions. No matter what type of refrigeration compressor you need, we can recommend the most suitable products and brands according to your specific needs.

Question 7

Get to know refrigeration reciprocating compressor

Accepted Answer

In the refrigeration industry, reciprocating refrigeration compressors (piston compressors) have stood the test of time with their mature technology and stable performance, becoming the "reliable backbone" of small and medium-sized refrigeration systems. Whether you are running a small cold storage, a convenience store’s freezer, or a medium-sized industrial refrigeration unit, reciprocating compressors can bring you reassuring performance and cost-effective solutions.

What makes reciprocating compressors irreplaceable?

First, their mature technology ensures ultra-stable operation – after decades of technical iteration, the structure of piston, cylinder and valve has been optimized to the extreme, with low failure rate and easy maintenance, which can greatly reduce your later operation and maintenance costs.

Second, they have strong adaptability to working conditions, especially in low-temperature scenarios (such as -30℃ cold storage), they can still maintain efficient operation, which is unmatched by many other types of compressors.

In addition, their cost performance is outstanding, whether it is equipment purchase or later maintenance, they can help you control costs while ensuring refrigeration effect.

When choosing reciprocating compressors, mainstream brands are your best guarantee.

Copeland: with its reliable quality and energy-saving and environmental protection advantages, has become the first choice for many enterprises;
Bitzer, as a global leader in low-temperature refrigeration, has professional technology and global reputation, perfectly adapting to harsh low-temperature working conditions;
Danfoss’s products are famous for high energy efficiency and wide applicability, which can match various refrigeration systems;
Embraco’s compact design is very suitable for small equipment such as household freezers;
Bristol Compressors is cost-effective and stable in operation, which is a cost-saving choice for small and medium-sized enterprises;
Chinese Brand(DMZL,REFCOM..., with independently developed technology and the most affordable price, has become a rising star in the market, providing high-quality choices for cost-sensitive customers.

For scenarios that pursue stability, cost-effectiveness and adaptability to low temperature, reciprocating refrigeration compressors are definitely the most reliable choice. Choose the right brand, and let the mature technology escort your refrigeration business.

Question 8

Mainstream refrigeration compressor classifications on the market

Accepted Answer

When it comes to refrigeration systems, the compressor is the core power source that determines the efficiency, stability and service life of the entire system. Whether for home air conditioning, commercial cold storage, industrial refrigeration or central air conditioning, choosing the right type of refrigeration compressor is crucial. To help you quickly grasp the key points and select suitable products, DMZL will focus on the structure classification of refrigeration compressors and list the mainstream brands in each category, making your purchase decision easier.

1. Reciprocating Refrigeration Compressors

Reciprocating refrigeration compressors, also known as piston compressors, are one of the most traditional and widely used types. They realize refrigerant compression through the reciprocating movement of pistons in cylinders, featuring mature technology, stable operation and strong adaptability to working conditions. They are especially suitable for small and medium-sized refrigeration equipment and low-temperature cold storage scenarios.

Mainstream Brands: Copeland (reliable quality, energy-saving and environment-friendly), Bitzer (professional in low-temperature scenarios, global reputation), Danfoss (high energy efficiency, wide applicability), Embraco (compact design, suitable for small equipment), Bristol Compressors (stable operation, cost-effective), Chinese Brand (developed technology, most affordable).

2. Rotary Refrigeration Compressors

Rotary refrigeration compressors replace reciprocating movement with rotational movement, which are compact in structure, small in size, light in weight, low in noise and stable in operation. They are the first choice for home air conditioners, small refrigeration equipment and commercial air conditioning systems, and are currently the most widely used type in the market.

According to the difference of core components, it is divided into the following subcategories, with corresponding mainstream brands:

2.1 Rotary Vane Compressors

With simple structure, low cost and reliable operation, they are mainly used in small refrigerators, freezers and other micro refrigeration equipment. Mainstream Brands: Panasonic (energy-saving, long service life), Hitachi (advanced technology, inventor of scroll compressor), LG (excellent frequency conversion, precise temperature control), Sanyo (stable performance, low noise), Midea (cost-effective, perfect after-sales).

2.2 Scroll Compressors

It has the advantages of high efficiency, low noise and long service life, and is widely used in household air conditioners, multi-connected machines and commercial refrigeration fields. Mainstream Brands: Copeland (excellent anti-liquid return ability, high energy efficiency), Danfoss (environmental protection, wide working condition adaptation), Daikin (pioneer of multi-connected technology, high IPLV), Mitsubishi Electric (high-end quality, low noise), Hanbell (stable and efficient, leading market share in China).

2.3 Screw Compressors

Divided into single-screw and twin-screw types, it has strong load adaptability and high efficiency, and is the core equipment in industrial refrigeration, commercial central air conditioning and large cold storage. Mainstream Brands: Atlas Copco (extreme energy efficiency, intelligent interconnection), Ingersoll Rand (sturdy structure, easy maintenance), Hanbell (wide temperature range, diverse solutions), Bitzer (professional technology, global after-sales), Fusheng (international quality, local service).

3. Centrifugal Refrigeration Compressors

Centrifugal refrigeration compressors, also known as turbo compressors, are mainly characterized by large cooling capacity, stable operation and low energy consumption. They are specially designed for large-scale refrigeration scenarios such as large central air conditioning systems, petrochemical industrial refrigeration and large shopping malls.

Mainstream Brands: York (advanced multi-stage compression technology, high stability), Trane (reliable performance, full working condition adaptation), Carrier (energy-saving, long service life), McQuay (magnetic levitation technology, high energy efficiency), Hanbell (powerful cooling capacity, environmental protection).

Choosing the right refrigeration compressor depends not only on the structural type, but also on the brand strength and product quality. The above mainstream brands have been tested by the market for a long time, with reliable quality and perfect after-sales service, which can fully meet the needs of different scenarios. Whether you are looking for household, commercial or industrial refrigeration solutions, you can find the most suitable product according to the above classification and brand recommendations.

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