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refrigeration unit

A technology of refrigeration device and throttling device, which is used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of large heating capacity, hidden safety hazards, and small displacement, and improve the refrigeration capacity and energy efficiency ratio. , The effect of ultra-low temperature heating, improving heating capacity and performance coefficient

Active Publication Date: 2017-05-10
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although the existing technology of supplementing air to increase enthalpy has a certain effect on increasing the heating capacity at low temperatures, it is limited by the displacement ratio of high and low pressure stages, and the displacement with better energy efficiency is relatively small, while the displacement with better heating capacity Relatively large, the two cannot have both in the existing design, and cannot meet the practical application in cold areas, so it is still necessary to install auxiliary electric heaters on the indoor side to increase the heating effect, and there are certain safety hazards in installing auxiliary electric heaters on the indoor side

Method used

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Experimental program
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Embodiment 1

[0041] Compared with the prior art, the technical solution of Embodiment 1 realizes more working modes, breaks through the problem that two-stage compression or quasi-two-stage compression refrigeration devices cannot have both energy efficiency and capacity, and can significantly improve the heating process. Heating capacity and coefficient of performance, in the cooling process, can significantly improve the cooling capacity and energy efficiency ratio.

[0042] figure 1 In the shown embodiment one, the four variable capacity operation modes of the compressor unit are formed by switching, and the operation is performed at ultra-low temperature heating Figure 2a The shown low-pressure stage capacity-increasing two-stage compression intermediate air supplement operation mode can significantly increase the heating capacity, and the high- and low-pressure stage refrigerant circulation flow rate also increases significantly to improve the heat transfer performance in the tube. A...

Embodiment 5

[0047] In Embodiment 5, the first three-way valve 10 is switched and communicated with the second air inlet B of the compressor unit 1 and the fifth outlet of the gas-liquid separator 6 to maintain the normal operation of the auxiliary path compression chamber, and the second three-way valve 11 is switched and connected The first air inlet A and the third air inlet C of the compressor unit 1 are connected to make the low-pressure compression chamber P1 idle, and the communication state of the two-way valve 9 is maintained to form Figure 7a The shown two-stage compression mid-air supply operation mode in which the auxiliary path compression chamber P3 is connected in series with the high-pressure compression chamber P1. In the aforementioned state, the two-way valve 9 is cut off to form Figure 7b The shown two-stage compression operation mode in which the secondary compression chamber P3 is connected in series with the high-pressure compression chamber is without supplementar...

Embodiment 6

[0050] The third three-way valve 12 in the sixth embodiment is switched and communicated with the adjacent port of the two-way valve 9 and the gas outlet of the flasher 5, then by switching can form Figure 2a to Figure 2d and Figure 7a and Figure 7b Six compressor unit operating modes are shown (first through sixth operating modes). The third three-way valve 12 of the sixth embodiment switches and communicates with the adjacent port of the two-way valve 9 and the sixth outlet of the gas-liquid separator 6, and the first three-way valve 10 switches and communicates with the second air inlet B of the compressor unit 1 and the exhaust port D make the auxiliary path compression chamber P3 idle, the second three-way valve 11 switches and communicates with the first air inlet A and exhaust port D of the compressor unit 1 to make the low-pressure compression chamber P1 idle, and maintain the two-way valve 9 Connected state, forming Figure 9 The high-pressure compression chambe...

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Abstract

A refrigeration device, comprising: a compressor unit (1) and an air supplementation device (5). The compressor unit (1) comprises a primary path compression chamber and an auxiliary path compression chamber (P3). The primary path compression chamber comprises a low-pressure compression chamber (P1) and a high-pressure compression chamber (P2) connected to one another in series. The primary path compression chamber is provided with a first air intake port (A) and an exhaust port (D). The auxiliary path compression chamber (P3) is provided with a second air intake port (B). An exhaust port of the auxiliary path compression chamber (P3) is connected between the low-pressure compression chamber (P1) and the high-pressure compression chamber (P2). An air supplementation pipe is arranged between the primary path compression chamber and the air supplementation device (5). The air supplementation pipe is provided with a third air intake port (C) and a first outlet. The first outlet is connected between the low-pressure compression chamber (P1) and the high-pressure compression chamber (P2). At least one of the first air intake port (A), the second air intake port (B) and the third intake port (C) takes in air so as to enable at least one of the low-pressure compression chamber (P1), the high-pressure compression chamber (P2) and the auxiliary path compression chamber (P3) to be in an operational state. The refrigeration device can effectively improve heating capacity when at a low temperature.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a refrigeration device. Background technique [0002] The heating capacity of the air source heat pump decays rapidly as the outdoor ambient temperature drops and cannot meet the needs of users. Existing two-stage or quasi-two-stage compression mid-air supplementary enthalpy increase technology, including two-stage throttling intermediate incomplete cooling and one-stage throttling intermediate incomplete cooling cycle, in order to improve the heating capacity and COP when the outdoor temperature is too low , while reducing the compressor discharge temperature. [0003] However, although the existing technology of supplementing air to increase enthalpy has a certain effect on increasing the heating capacity at low temperatures, it is limited by the displacement ratio of high and low pressure stages, and the displacement with better energy efficiency is relatively small, while the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10F25B30/02
CPCF25B1/00F25B31/00
Inventor 梁祥飞黄辉郑波黄柏良庄嵘
Owner GREE ELECTRIC APPLIANCES INC