Single-cooling type refrigeration device and heating and cooling type refrigeration device

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

Inactive Publication Date: 2017-02-22
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-cooling type refrigeration device and heating and cooling type refrigeration device
  • Single-cooling type refrigeration device and heating and cooling type refrigeration device
  • Single-cooling type refrigeration device and heating and cooling type refrigeration device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0062] In this example, 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 When the oil reaches the suction port b, the pressure will not be too high, 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, during the process of the refrigerant flowing out from the refrigerant outlet h to the suction port b through the indoor heat exchanger 3, the refrigerant will have a certain pressure loss. 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 the refrigerated oil can smoothly flow to the suction port b through the oi...

no. 2 example

[0072] In the second embodiment, as figure 2 As shown, the structure of the single-cooling type refrigerating apparatus 100A is basically the same as that of the single-cooling type refrigerating apparatus 100A in the first embodiment, which will not be repeated here.

[0073] The difference is that in the second embodiment, the second throttle 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 throttling element 41, and the inlet g and the refrigerant outlet h can also be connected in series between the indoor heat exchang...

no. 3 example

[0093] In this example, 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. In this way, 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 pair from entering the refrigerant circulation passage T into compression The quality and pressure of the refrigerant inside the unit 1 are affected.

[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 throttling element 41, that is, in the figure 1 , the first liquid separator 511 is connected in series between the outdoor heat exchanger 2 and the first throttling element 41 .

[0095] Advantageously, the second throttling element 42 is configured to adjust the amount of depressurization of the oil ...

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Abstract

The invention discloses a cold-only type refrigeration device and a cold-warm type refrigeration device. The cold-only refrigeration unit includes: compressor, outdoor heat exchanger, indoor heat exchanger and oil return device. The compressor has a discharge port and a suction port. The first end of the outdoor heat exchanger is connected to the exhaust port, the first end of the indoor heat exchanger is connected to the suction port, and the second end of the outdoor heat exchanger is connected in series with the second end of the indoor heat exchanger. a throttling element. The oil return device has an inlet, a refrigerant outlet and an oil outlet, the inlet and the refrigerant outlet are connected in series between the outdoor heat exchanger and the indoor heat exchanger, and the oil outlet is connected to the suction port. According to the cooling-only refrigeration device of the present invention, it is ensured that the cooling oil in the system flows back to the inside of the compressor in time, and the sealing and lubrication performance of the compressor is improved, thereby improving the energy efficiency and reliability of the compressor and prolonging the cooling time of the cooling-only type. The service life of the refrigeration unit. Moreover, the oil liquid is prevented from staying in the indoor heat exchanger, and the heat exchange efficiency of the indoor heat exchanger is improved.

Description

technical field [0001] The invention relates to the field of refrigeration / heating equipment, in particular to a single cooling type refrigeration device and a cooling and heating type refrigeration device. Background technique [0002] When a compressor in a refrigeration device is running, a refrigerating oil is usually enclosed in the compressor to seal the compressor and ensure the lubrication of the internal components of the compressor. With the inflow and discharge of the refrigerant, the refrigerated oil will inevitably be mixed in the refrigerant gas. When the compressor is running, the refrigerated oil will enter into other components of the refrigeration system through the exhaust gas, and be distributed in the outdoor heat exchanger, indoor heat exchanger, etc. Heaters, throttling elements and connecting lines. [0003] When it is difficult to return the refrigerant oil to the compressor in time, the operating oil level of the compressor will decrease, which wil...

Claims

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Application Information

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Patent Type & Authority Patents(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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