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Heat pump system and start-up control method thereof

A heat pump system and refrigerant technology, applied in heat pumps, refrigerators, refrigeration components, etc., can solve problems such as poor system stability and affect the application effect of heat pump systems, and achieve the effects of easy startup, shortened time, and elimination of inertia

Inactive Publication Date: 2016-08-03
MIDEA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are difficulties in starting the existing heat pump system. For example, it takes a long time to achieve the ideal capacity output after restarting after shutdown, and the system stability is poor, which affects the application effect of the heat pump system.

Method used

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  • Heat pump system and start-up control method thereof
  • Heat pump system and start-up control method thereof
  • Heat pump system and start-up control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 1 and Figure 4 As shown, in this embodiment, the heat pump system 100 includes a compressor 1 , a four-way valve (ie, a valve assembly 2 ), a condenser 3 , a throttling mechanism 4 , an evaporator 5 and a fan 6 . The four-way valve 2 has four ports: exhaust port D, suction port S, condenser port C, and evaporator port E. When the four-way valve 2 is powered off: the exhaust port D is connected to the condenser port C, The evaporator port E is connected to the suction port S, and when the power is turned on, the exhaust port D is connected to the evaporator port E, and the condenser port C is connected to the suction port S. Wherein, the exhaust port D is suitable for being connected with the outlet of the compressor 1 such as an exhaust pipe, the suction port S is suitable for being connected with the inlet of the compressor 1 such as a suction pipe, and the condenser port C is suitable for connecting with one end of the condenser 3 For example, the i...

Embodiment 2

[0053] refer to figure 2 and Figure 5 As shown, in this embodiment, the heat pump system 100 includes a compressor 1, a three-way valve 21a, a first two-way valve 21b and a second two-way valve 21c, a condenser 3, a throttling mechanism 4, an evaporator 5 and a fan 6. Wherein the first valve port of the three-way valve 21a, i.e. the A port, is connected with the outlet of the compressor 1, and the second valve port of the three-way valve 21a, i.e. the B port, and the third valve port, i.e. the C port, respectively pass through the first two-way valve 21b and the The second two-way valve 21c is connected to the inlet of the compressor 1, and the outlet 52 of the evaporator 5 is connected to the third valve port of the three-way valve 21a and connected to the inlet of the compressor 1 through the second two-way valve 21c.

[0054] Specifically, the first valve port of the three-way valve 21a, that is, the A port, is connected to the outlet of the compressor 1, such as the ex...

Embodiment 3

[0063] refer to image 3 and Figure 6 As shown, in this embodiment, the heat pump system 100 includes a compressor 1, a first two-way valve 22a, a second two-way valve 22b, a third two-way valve 22c, a fourth two-way valve 22d, a condenser 3, a section Flow mechanism 4, evaporator 5 and fan 6. Wherein the first to fourth two-way valves form the valve assembly 2, the first valve port 221a of the first two-way valve and the first valve port 221d of the fourth two-way valve are respectively connected to the inlet of the compressor 1 such as the suction pipe, the second The second valve port 222a of a two-way valve is connected with the first valve port 221c of the third two-way valve and the inlet 31 of the condenser 3 respectively, and the second valve port 222d of the fourth two-way valve is connected with the second two-way valve respectively. The first valve port 221b of the first two-way valve is connected to the outlet 52 of the evaporator 5, and the second valve port 22...

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Abstract

The invention discloses a start-up control method of a heat pump system, which includes the following steps: S1: start the compressor to run for a first predetermined time, so that the refrigerant passes through the valve assembly, the condenser, the throttling mechanism, the evaporator, return to the compressor after the valve assembly; S2: switch the valve assembly and run for a second predetermined time, so that the refrigerant from the compressor passes through the valve assembly, evaporator, throttling mechanism, condenser and finally returns to the compressor through the valve assembly; S3 : Switch the valve assembly again, so that the refrigerant passes through the valve assembly, condenser, throttling mechanism, evaporator in turn from the compressor, and finally returns to the compressor through the valve assembly to complete the startup. The control method of the present invention forces the refrigerant to flow in the opposite direction by switching the valve assembly, so as to redistribute the refrigerant retained in the condenser and evaporator in the system, eliminate the inertia of the system, and make the system easier to start. The invention also discloses a heat pump system.

Description

technical field [0001] The invention relates to a heat pump system and its start-up control method Background technique [0002] There are difficulties in starting the existing heat pump system, for example, it takes a long time to achieve the ideal capacity output after restarting after shutdown, and the system stability is poor, which affects the application effect of the heat pump system. Contents of the invention [0003] The present invention aims at solving one of the above technical problems at least to a certain extent or at least providing a useful commercial choice. [0004] Therefore, an object of the present invention is to provide a start-up control method of a heat pump system, which can shorten the time from start-up of the heat pump system to reaching an ideal capacity output. [0005] Another object of the present invention is to propose a heat pump system that is simple to start and shortens the time to reach the desired capacity output. [0006] Accord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F25B41/04F25B30/02F24H9/20F24H4/02F25B41/20
Inventor 陈文强
Owner MIDEA GRP CO LTD