Double-temperature refrigerating and heating system

A heating system, medium temperature technology, applied in the direction of refrigerator, refrigeration and liquefaction, heating and refrigeration combination, etc., can solve the problem of switching between suction and exhaust ports, and achieve the effect of improving energy efficiency

Active Publication Date: 2016-03-30
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a dual-temperature refrigeration and heating system, which effectively solves the problem that the suction and exhaust ports of the two-stage compressors in the dual-temperature cold water / cooler unit cannot be switched in the dual-temperature cooling or dual-temperature heating operation mode The problem

Method used

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  • Double-temperature refrigerating and heating system
  • Double-temperature refrigerating and heating system
  • Double-temperature refrigerating and heating system

Examples

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Embodiment 1

[0039] image 3 This is a schematic diagram of the cycle of the dual-temperature refrigeration and heating system provided in the first embodiment of the present invention. like image 3 As shown, the first dual-temperature refrigeration and heating system proposed in this embodiment includes a low-temperature cooling system consisting of a compressor 1, a four-way valve, a throttle valve, an outdoor heat exchanger 4, a gas-liquid separator and an indoor heat exchanger. Evaporation circuit and medium temperature evaporation circuit. The indoor heat exchanger includes a first-stage indoor heat exchanger 6 and a second-stage indoor heat exchanger 9, one of the indoor heat exchanger and the outdoor heat exchanger 4 is a condenser, and the other is an evaporator. The four-way valve includes a first four-way valve 2 and a second four-way valve 3 . The compressor 1 includes a first cylinder and a second cylinder, a first cylinder, a first four-way valve 2, a first-stage throttle ...

Embodiment 2

[0047] This embodiment proposes a second dual-temperature refrigeration and heating system. The structure of the dual-temperature refrigeration and heating system in this embodiment is basically the same as that of the system described in the first embodiment. The differences are:

[0048] like Figure 5 As shown, a first solenoid valve 10 and a second solenoid valve 11 are added to the dual-temperature refrigeration and heating system of this embodiment. Specifically, the first solenoid valve 10 is installed in the connection between the flasher 7 and the second-stage indoor heat exchange On the pipeline of the heat exchanger 9, the outdoor heat exchanger 4 is connected with the second-stage indoor heat exchanger 9 through a pipeline, and a second solenoid valve 11 is installed on the pipeline. The purpose of adding the first solenoid valve 10 and the second solenoid valve 11 is to prevent the two-way exhaust gas from entering the flasher 7 for mixing during heating operation...

Embodiment 3

[0051] This embodiment proposes a third dual-temperature refrigeration and heating system. The structure of the dual-temperature refrigeration and heating system in this embodiment is basically the same as that of the system described in the first embodiment. The differences are:

[0052] like Image 6 As shown, the system components and cycles of this embodiment are basically the same as those described in Embodiment 1, except that the first-stage indoor heat exchanger 6 and the second-stage indoor heat exchanger 9 in Embodiment 1 are replaced by those arranged side by side. The first-stage double-row indoor heat exchanger 12 and the second-stage double-row indoor heat exchanger 13 are provided.

[0053] Specifically, during cooling, the first-stage double-row indoor heat exchanger 12 (medium-temperature row evaporator) is located on the windward side, and the supply air is cooled once, and then passes through the second-stage double-row indoor heat exchanger 13 (low-temperat...

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Abstract

The invention relates to the technical field of air conditioning equipment, and in particular, discloses a double-temperature refrigerating and heating system, wherein a first cylinder, a first four-way valve, a first-grade throttle valve, an outdoor heat exchanger, a first-grade indoor heat exchanger, a gas-liquid separator, a second-grade throttle valve and a second-grade indoor heat exchanger of a compressor are connected through a pipeline to form a low-temperature evaporation loop; and a second cylinder, a second four-way valve, a first-grade throttle valve, an outdoor heat exchanger, a first-grade indoor heat exchanger and a gas-liquid separator of the compressor are connected through a pipeline to form a middle-temperature evaporation loop. The double-temperature refrigerating and heating system realizes switchover of refrigerating / heating modes through reversing of two four-way valves, realizes double-evaporation temperature refrigeration or double-condensation temperature heating, and effectively improves whole system energy efficiency; and obtained double-evaporation or double-condensation temperature can be widely applied to such places as freezing and refrigeration, air conditioner cold radiation and dehumidification, double-temperature heat source heat pump, air conditioner heat radiation and hot air or air conditioner heat radiation and living hot water.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to a dual-temperature refrigeration and heating system. Background technique [0002] like figure 1 As shown, an existing dual-temperature cold water / cooler unit includes a low-temperature stage compressor 1', a medium-temperature stage compressor 2', a condenser 3', a high-temperature stage throttle valve 4', a medium-temperature evaporator 5', a low-temperature stage Throttle valve 6', low temperature evaporator 7' and four-way reversing valve 13'. The low-temperature stage compressor 1' and the medium-temperature stage compressor 2' are arranged in parallel, and suck and compress to the discharge pressure from the medium-temperature evaporator 5' and the low-temperature evaporator 7' respectively. In the above-mentioned dual temperature cold water / cooler unit, the four ports of the connected four-way reversing valve 13' are respectively connected with the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B29/00
CPCF25B13/00F25B29/003F25B2313/0231F25B2313/02742
Inventor 梁祥飞艾芳洋郑波
Owner GREE ELECTRIC APPLIANCES INC
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