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Single-cold type refrigeration device and cold-warm type refrigeration device

A refrigeration device, heating and cooling technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems affecting the heat transfer efficiency of heat exchangers, affecting the performance of compressors, etc., to improve sealing and lubrication performance, and prolong service life Longevity, improved energy efficiency and reliability effects

Inactive Publication Date: 2015-03-25
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The refrigeration device in the related art has the problem of affecting the performance of the compressor and the heat transfer efficiency of the heat exchanger after the refrigerated oil flows out of the compressor

Method used

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  • Single-cold type refrigeration device and cold-warm type refrigeration device
  • Single-cold type refrigeration device and cold-warm type refrigeration device
  • Single-cold type refrigeration device and cold-warm type refrigeration device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0062] In this embodiment, as figure 1 As shown, a second throttling element 42 is connected in series between the oil outlet i and the suction port b, that is, the second throttling element 42 is connected in series on the oil return pipe 52, thereby reducing the flow from the oil outlet i to the suction port. The oil pressure at port b will not be too high when the oil reaches the suction port b, so as to prevent the oil from affecting the quality and pressure of the refrigerant entering the compressor 1 from the indoor heat exchanger 3.

[0063] Specifically, in the refrigerant circulation channel T, when the refrigerant flowing out of the refrigerant outlet h flows to the suction port b through the indoor heat exchanger 3, the refrigerant will have a certain pressure loss. Assume that the liquid separation chamber of the oil return device 5 The internal pressure of V is P2, and the pressure at the suction port b of the compressor 1 is P1, then P2>P1. In order to ensure that t...

no. 2 example

[0072] In the second embodiment, such as figure 2 As shown, the structure of the single-cooling refrigeration device 100A is basically the same as the structure of the single-cooling refrigeration device 100A in the first embodiment, and will not be repeated here.

[0073] The difference is that in the second embodiment, the second throttling element 42 is an electronic expansion valve 402. That is, the oil return device 5 performs oil return and pressure drop through the electronic expansion valve 402. Of course, the second throttling element 42 may also adopt other pressure reducing elements, which are not specifically limited here.

[0074] It can be seen from the second embodiment that the arrangement of the inlet g and the refrigerant outlet h is not limited to being connected in series between the outdoor heat exchanger 2 and the first throttle element 41, and the inlet g and the refrigerant outlet h can also be connected in series in the indoor heat exchanger 3 and Between...

no. 3 example

[0093] In this embodiment, as image 3 As shown, a second throttle element 42 is connected in series between the first oil outlet i1 and the suction port b. As a result, the pressure of the oil flowing from the first oil outlet i1 to the suction port b can be reduced, and the pressure will not be too high when the oil reaches the suction port b, thereby preventing the oil from entering the compression from the refrigerant circulation channel T The quality and pressure of the refrigerant inside the machine 1 have an influence.

[0094] In the third embodiment, the first inlet g1 and the first refrigerant outlet h1 are connected in series between the outdoor heat exchanger 2 and the first throttle element 41, that is, between figure 1 In this case, the first liquid distributor 511 is connected in series between the outdoor heat exchanger 2 and the first throttle element 41.

[0095] Advantageously, the second throttle element 42 is configured to adjust the amount of pressure drop of ...

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Abstract

The invention discloses a single-cold type refrigeration device and a cold-warm type refrigeration device. The single-cold type refrigeration device comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and an oil return device. The compressor is provided with an exhaust port and a gas suction port. The first end of the outdoor heat exchanger is connected with the exhaust port, the first end of the indoor heat exchanger is connected with the gas suction port, and a first throttling element is connected between the second end of the outdoor heat exchanger and the second end of the indoor heat exchanger in series. The oil return device is provided with an inlet, a refrigerant outlet and an oil outlet, the inlet and the refrigerant outlet are connected between the outdoor heat exchanger and the indoor heat exchanger in series, and the oil outlet is connected with the gas suction port. According to the single-cold type refrigeration device, it is guaranteed that cooling oil in the system flows back into the compressor in time, the sealing performance and lubricating performance of the compressor are improved, and therefore the energy efficiency and reliability of the compressor are improved, and the service life of the single-cold type refrigeration device is prolonged; it is avoided that the oil remains in the indoor heat exchanger, and therefore the heat exchange efficiency of the indoor heat exchanger is improved.

Description

Technical field [0001] The present invention relates to the field of refrigeration / heating equipment, in particular to a single-cooling type refrigeration device and a heating and cooling type refrigeration device. Background technique [0002] When the compressor in the refrigeration device is running, the compressor is usually sealed with refrigerating oil to seal the compressor and ensure the lubrication of the internal components of the compressor. With the inflow and discharge of the refrigerant, the refrigerating oil will inevitably be mixed in the refrigerant gas. When the compressor is running, the refrigerating oil will enter the other components of the refrigeration system through the exhaust gas and be distributed in the outdoor heat exchanger and indoor heat exchanger. Heater, throttling element and connecting pipeline. [0003] When it is difficult for the refrigerating oil to flow back into the compressor in time, the operating oil level of the compressor will be red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00F25B41/06F25B41/34
CPCF25B31/004F25B2500/06F25B2500/09
Inventor 吴延平陈振华
Owner GUANGDONG MEIZHI COMPRESSOR
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