Modular cascading refrigeration cycle system for medical refrigerator

Abstract

The invention discloses a modular cascading refrigeration cycle system for a medical refrigerator. The modular cascading refrigeration cycle system comprises a box body. The box body is composed of four modules and an evaporative condenser module at the side edge. An R13 compressor, a pre-cooler, a first oil separator and a one-way valve are installed in the first module. The first module is further connected to an expansion container outside the box body through a pipeline. The pre-cooler is connected to a water supply device through a pipeline. An evaporator, a first expansion valve, a first electromagnetic valve, a heat regenerator and a first filter are installed in the second module. An R22 compressor and a second oil separator are installed in the third module. A condenser, a second filter, a second electromagnetic valve and a second expansion valve are installed in the fourth module. An evaporative condenser is installed in the evaporative condenser module. Necessary pipeline connectors are arranged between the modules. Pipelines are connected with each other according to a schematic diagram. According to the modular cascading refrigeration cycle system for the medical refrigerator, the modular combination design is adopted; the overall size of the equipment is effectively controlled; installation, maintenance and repairing are convenient; once a certain module goes wrong, the module can be replaced immediately and returns to work; and the modular cascading refrigeration cycle system is suitable for the low-temperature special medical refrigerator.

Description

[0001] Technical field: [0002] The invention relates to the field of medical refrigerators, in particular to a modularized cascade refrigeration cycle system of a medical refrigerator. [0003] Background technique: [0004] With the development of the domestic medical industry, most hospitals and pharmaceutical factories need to use medical refrigerators. Medical refrigerators mainly store medicines, reagents, vaccines, biological products, and valuable medicines that need to be stored at low temperature. Compared with ordinary civilian refrigerators, Medical refrigerators have stricter temperature control requirements. Once the temperature goes wrong, it may cause drug failure and economic losses, and even endanger the lives of patients. [0005] With scientific research and production, the requirements for low temperature of medical refrigerators are getting higher and higher, such as -70~-120C medical low temperature boxes, medical low temperature cold storage, etc. Due ...

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Problems solved by technology

[0009] (3) For piston compressors, due to the automatic opening and closing characteristics of the valve, when the suction pressure is lower than 0.01-0.ois MPa, it is difficult to overcome the spring force of the suction valve, which affects the normal operation of the compressor

[0016] However, most of the cascade refrigeration equipment currently on the domestic market has the disadvantages of complex structure, bulky size, and high cost. The equipment developed for the field of medical refrigerators is almost zero. , cascade refrigeration equipment suitable for medical refrigerators that are easy to install, maintain and repair

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