Control method and device of four-way valve

A control method and four-way valve technology, applied in the field of control, can solve problems such as four-way valves not in place, unit abnormalities, etc., to achieve the effect of extending the operating life and improving reliability

Active Publication Date: 2015-06-03
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a four-way valve control method and device to solve the problem that the four-way valve is not reversing in place and the unit is abnormal

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  • Control method and device of four-way valve
  • Control method and device of four-way valve
  • Control method and device of four-way valve

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0025] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses a control method and device of a four-way valve. The method comprises the following steps: detecting a running mode of a heat recovery type unit, wherein the heat recovery type unit comprises the four-way valve and a compressor; if detecting that the running mode is a preset mode, detecting an inspiration and exhaust pressure difference value of the compressor; judging whether the inspiration and exhaust pressure difference value of the compressor meets a preset condition; if the inspiration and exhaust pressure difference value of the compressor meets the preset condition, reversing the four-way valve. Through the method and the device, the problem of abnormality of the unit caused by improper reversing of the four-way valve in the related technology is solved.

Description

technical field [0001] The invention relates to the field of control, in particular to a control method and device for a four-way valve. Background technique [0002] For the current heat recovery unit, the domestic hot water outlet temperature is very high. In addition, the environmentally friendly refrigerant R410A used in the heat recovery unit has a relatively high pressure characteristic. Therefore, the above two points make the unit run at a very high pressure. In order to meet the different needs of users, the unit often needs to run hot water heating below -10°C. At this time, the low pressure of the unit is very low, and the pressure difference of the unit is very large, so the unit needs to defrost. The slider is damaged, while the conventional defrosting is that the four-way valve reaches the defrosting point and enters the defrosting directly. However, the direction change of the four-way valve is not in place when starting up, and the four-way valve is easily d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
CPCF25B49/02
Inventor 吴呈松王传华孙思
Owner GREE ELECTRIC APPLIANCES INC
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