Electromagnetical four-way valve connection in parallel reversing arrangement used for heat pump set
A heat pump unit, the technology of the first four-way valve, applied in the field of air conditioners, can solve the problem of no mature products for the time being
Active Publication Date: 2009-07-29
WUXI TONGFANG ARTIFICIAL ENVIRONMENT
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Problems solved by technology
The disadvantage of this circuit is that the cost of a large-capacity four-way valve 7 used in a heat pump unit with a single system capacity of 50KW or more is about 10 times higher than that of a heat pump unit with a capacity of less than 50KW, and most of the mature products of this component are foreign brands. Restricted by technical bottlenecks, there are no mature products
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[0009] As shown in the figure: the exhaust end of the compressor 1 is connected to the D port of the four-way valve by a pipe, the C port of the four-way valve is connected to the condenser 4 by a pipe, and the condenser 4 is connected to the two-way thermal expansion valve 5 by a pipe. The inlet is connected, the outlet of the two-way thermal expansion valve 5 is connected to the evaporator 6 by a pipeline, the evaporator 6 is connected to the E interface of the four-way valve by a pipeline, and the suction end of the compressor is connected to the S interface of the four-way valve by a pipeline. The feature is: the four-way valve has a first four-way valve 2 and a second four-way valve 3 connected in parallel, and the D ports of the first four-way valve 2 and the second four-way valve 3 are connected to each other by pipelines, and the compressor 1 The exhaust end of the first four-way valve 2 and the second four-way valve 3 are connected in parallel with the D' interface thr...
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An electromagnetic four-way valve parallel reversing device used for a heat pump unit relates to the technical field of air conditioning. According to the technical solution provided by the present invention, the four-way valve has a first four-way valve and a second four-way valve connected in parallel, and the exhaust end of the compressor is connected in parallel with the first four-way valve and the second four-way valve The D' interface of the condenser is connected with the C' interface after the first four-way valve and the second four-way valve are connected in parallel through pipelines; the suction end of the compressor is connected with the first four-way valve and the second four-way valve through pipelines The S' interface after parallel connection is connected; the evaporator is connected with the E' interface after the parallel connection of the first four-way valve and the second four-way valve through pipelines. In the present invention, two small-capacity four-way valves are connected in parallel to replace a large-capacity four-way valve. When the heat pump unit is running, the system capacity can be increased, so that the unit can perform normal heating without Lose the ability value of the unit itself.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a reversing device in which a large-capacity four-way valve is replaced by two small-capacity four-way valves connected in parallel for a heat pump unit above 50KW. Background technique [0002] Most of the reversing devices in traditional heat pump units use a circuit composed of a large-capacity electromagnetic four-way reversing valve 7 and the system, such as figure 1 shown; in order to ensure the flow direction conversion function of the refrigerant when switching between cooling and heating. The disadvantage of this circuit is that the cost of a large-capacity four-way valve 7 used in a heat pump unit with a single system capacity of 50KW or more is about 10 times higher than that of a heat pump unit with a capacity of less than 50KW, and most of the mature products of this component are foreign brands. Restricted by technical bottlenecks, there are currently no m...
Claims
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IPC IPC(8): F25B41/04
Inventor 魏勇白俊文范新丁亮谢明星
Owner WUXI TONGFANG ARTIFICIAL ENVIRONMENT