HBP – High Back Pressure R134a 220-240V ~ 50Hz Reciprocating Compressor

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An Khang Company est le fournisseur et le grossiste de Panasonic de petite capacité pour les réfrigérateurs, réfrigérateurs, congélateurs, etc. à l’échelle nationale. Avec la bonne qualité de modèle, le bon modèle, une capacité diversifiée adaptée à chacun.

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>> Panasonic refrigerator QB110C19GAW5–1 / 3HP – 220 ~ 240V – R134.

Panasonic Refrigerator Compressor QB91C24GAXO :

1.Horsepower:1/4+HP
2.Voltage:220v,50HZ or 220V/60HZ
3.Refrigerant: R12,R134a

4,Capacity: 255W

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Wanbao Group Compressor Co.,Ltd ( Formerly known as Guangzhou Refrigeration Company Ltd, hereinafter referred as The Co.), started its production in 1987, is the first manufacturer to infroduce foreign technology and equipment for large-scale production of refrigerator compressor in China. In 2014, The Co. acquired the overseas refrigerator compressor manufacturer-Italy ACC, and then founded Italian Wanbao-ACC Co., Ltd. This action upgrades Wanbao compressor from market internationlization towards manufacturing internationalization, and lays solid foundation to brand internationalization for the next step.

The Co. has four production bases in Guangzhou, Qingdao, Hefei, and Italy, with annual production capacity of 26 million units, thus forged a strategic global layout covering both domestic and foreign major customers. Wanbao China  mainl supplies to large domestic refrigerator manufacturers including Haier, Hisense, Midea, Meiling, etc, as well as international famous home appliance manufacturers including Electrolux Whirlpool, etc., as their global supplier. Wanbao-ACC Italy is a major supplier of European high-end brand home appliance manufacturers.

Le compresseur hermétique ZMC GM70AZ, visible sur l’étiquette de la photo, est un modèle fonctionnant au réfrigérant R134a, conçu pour les applications à basse pression d’aspiration dans le froid ménager. Fabriqué en Égypte par Misr Compressor Manufacturing Co. (ZMC), il cible les réfrigérateurs et congélateurs domestiques alimentés en 220–240 V, 50 Hz, très répandus en Afrique du Nord et au Moyen‑Orient.​​

Caractéristiques techniques essentielles

Le GM70AZ appartient à la famille de compresseurs LBP (Low Back Pressure), avec une plage d’évaporation typique d’environ −30 °C à −10 °C adaptée au froid négatif. Il fonctionne au réfrigérant R134a, avec un refroidissement du moteur par convection statique et une alimentation monophasée 220–240 V, 50 Hz comme indiqué sur l’étiquette.​​

Ce compresseur offre une puissance de l’ordre de 1/5 HP, ce qui le positionne pour des réfrigérateurs et congélateurs ménagers de petite à moyenne capacité. Il est fourni avec des connexions brasées pour aspiration, refoulement et process, ce qui facilite son intégration dans les circuits frigorifiques standards des fabricants et des ateliers de maintenance.​

Tableau – Données techniques typiques ZMC E/GM70AZ

Paramètre	Valeur indicative
Modèle	GM70AZ / EGM70AZ ​
Réfrigérant	R134a ​
Application	LBP (basse pression d’aspiration) ​
Plage de Te	−30 °C à −10 °C ​
Tension / fréquence	220–240 V ~ 50 Hz, 1 Ph ​​
Type de compresseur	Hermétique à piston (reciprocating) ​
Refroidissement compresseur	Statique ​
Domaine d’utilisation typique	Réfrigérateurs / congélateurs domestiques ​

Enjeux pour le froid domestique

Les compresseurs GM70AZ et EGM70AZ s’inscrivent dans la stratégie industrielle de ZMC visant à fournir des compresseurs hermétiques compétitifs pour les fabricants de réfrigérateurs et les marchés de rechange. Grâce à leur compatibilité avec le R134a, ils restent courants dans les appareils existants, même si le secteur s’oriente progressivement vers des réfrigérants à plus faible GWP comme le R600a.​

Pour les techniciens frigoristes, l’identification correcte du modèle et du gaz, comme on le voit clairement sur l’étiquette GM70AZ, est essentielle pour respecter les conditions de fonctionnement (tension, plage d’évaporation, type de détente capillaire) et garantir longévité et efficacité énergétique. Ce type de compresseur est largement utilisé dans les ateliers de service en Tunisie, en Égypte et dans la région MENA, où les pièces ZMC sont facilement disponibles.

​

The EGM91AA is a hermetic reciprocating compressor manufactured by ZMC, designed primarily for use with R134a refrigerant. It operates on a voltage range of 220-240V at 50Hz and is typically used for low back pressure (LBP) refrigeration applications like household refrigerators and freezers.​​

Main Specifications

• Refrigerant: R134a​​

• Application: LBP (Low Back Pressure)​

• Power: 1/4 HP​

• Voltage/Frequency: 220-240V, 50Hz​​

• Motor Type: RSIR/CSIR​

• Starting Device: PTC QP2-15Ω​

• Oil Charge: 180 cm³ esters (POE)​

• CE certified​​

Technical Details

• Evaporating Temperature Range: -30°C to -10°C (suitable for refrigeration, not deep freeze)​

• Maximum Motor Temperature: 130°C​

• Locked Rotor Current: 6.78 A​

• Voltage Working Range: 187-264V​

• Compressor Cooling: Static​

• Expansion device: Capillary tube​

Typical Uses

• Household refrigerators

• Small commercial refrigerators

• Appliances using R134a needing 1/4 HP compressor power​

This model is manufactured in Egypt and is widely compatible with fridges operating in regions where 220-240V, 50Hz power is standard

For the EGM91AA (LBP, R134a), the answer leans more to freezing / low‑temperature cooling, but it is used for both refrigerators and freezers depending on the system design.​

What LBP means

• LBP = Low Back Pressure, which corresponds to low evaporating temperatures, typically about −30 °C to −10 °C.​

• Such compressors are commonly used in freezers, deep freezers, and low‑temperature refrigerator compartments.​

So for EGM91AA

• Its data sheet lists application = LBP with evaporating range −30 °C to −10 °C, exactly the range used for freezer or low‑temperature refrigerator circuits.​

• Practically: if you charge and size the capillary for −25/−30 °C, it works as freezing; if you design around −12/−10 °C, it becomes strong cooling / chiller level.

The EGM91AA compressor from ZMC stands out as one of the most notable solutions in the domestic and light commercial refrigeration sector thanks to its use of R134a refrigerant and its high efficiency under varying climatic conditions. It delivers optimal cooling performance for refrigerators operating on 220–240 V, 50 Hz power, making it a practical choice for both local and international markets. Its advanced technical features translate into quick response, reduced energy consumption, and excellent compatibility with household systems, providing reliable performance backed by solid regional manufacturing.​​

Journalistic introduction

In the fast‑moving world of refrigeration technology, real innovation often hides in the small components that only technicians and specialists tend to notice. At the core of every modern refrigerator, a compressor sets the rhythm for the entire system’s life span and efficiency, and the EGM91AA model is a clear illustration of this principle. A compact steel shell, carefully engineered handling of R134a refrigerant, and optimized power consumption come together to keep food safe and temperatures stable even when ambient heat pushes equipment to its limits.​​

This compressor is more than a metal capsule in a sealed circuit; it is a technical product with a manufacturing story that starts in Egypt and extends across regional markets serving home refrigeration. Designed for 220–240 V, 50 Hz grids and carrying CE conformity, it offers installers and repair professionals a unit that combines robustness, availability of spare parts, and predictable behavior in low back‑pressure applications. As local industries expand their capabilities, models like the EGM91AA show how regional manufacturing can compete in quality while remaining accessible to small workshops and major appliance brands alike.​​

Technical specifications table for EGM91AA

Performance Analysis of the BSA645CR Compressor with Horsepower Calculation

1. Introduction

The BSA645CR is a constant-speed reciprocating compressor designed for refrigeration and air conditioning systems using R134a refrigerant. It is commonly used in residential and light commercial applications due to its compact design, efficiency, and compatibility with standard voltage supplies.

This article provides a detailed overview of the BSA645CR compressor’s technical specifications, explains how to calculate its output horsepower (HP), and discusses its performance characteristics.

2. Technical Specifications of

The information provided matches the specifications of the Trucool Huayi HY113YZ Compressor from the uploaded document. Below is a comparison and verification of the details:

Key Specifications:

1. Model : HY113YZ (matches HYE113Y as a variant)
2. Application : High Back Pressure (HBP) ✅
3. Power Input : 455W ✅
4. Refrigerant : R134a ✅
5. Horsepower :
   • 3/8 hp
6. Cooling Capacity :
   • 860 Kcal/Hr or 3414 Btu/Hr ✅
7. EER (Energy Efficiency Ratio) : 7.50 Btu/W.Hr ✅
8. Displacement : 11.3 cm³ ✅
9. Voltage Range : 187-253V ✅

Additional Details:

• Motor Type : CSIR (Capacitor Start Induction Run) ✅
• Cooling Method : Fan Cooling ✅
• Electrical Accessories :
  • Start Relay: QL2-9.5 B3
  • Thermal Protector: B120-135/B
  • Start Capacitor: 60uF/[61uF]

Weights:

• Net Weight : 11.4 kg ✅
• Gross Weight : 12.5 kg ✅

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