Heat exchange device, air conditioner and control method of air conditioner

Abstract

The invention belongs to the technical field of heat exchange, and particularly provides a heat exchange device, an air conditioner and a control method of the air conditioner. The heat exchange device, the air conditioner and the control method of the air conditioner aims to solve the problem that an existing air conditioner is low in energy efficiency under the partial load working condition. The heat exchange device comprises a plurality of heat exchange assemblies, each heat exchange assembly comprises a first heat exchange branch and a second heat exchange branch which are connected in parallel, first switch valves are arranged on the first heat exchange branches, second switch valves are arranged on the second heat exchange branches, communication branches are arranged between the first heat exchange branches and the second heat exchange branches, one-way valves are arranged on the communication branches, one ends of the communication branches are connected to the upstream of thefirst switch valves of the first heat exchange branches, and the other ends of the communication branches are connected to the downstream of the second switch valves of the second heat exchange branches. According to the heat exchange device, the air conditioner and the control method of the air conditioner, each first heat exchange branch and the corresponding second heat exchange branch can becombined into one refrigerant channel so that the flowing speed of refrigerants can be guaranteed under the low-load working condition, and then the heat exchange efficiency of the air conditioner iseffectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and specifically provides a heat exchange device, an air conditioner and a control method thereof. Background technique [0002] With the continuous development of heat exchange technology, users have put forward higher and higher requirements for the comprehensive performance of air conditioners. Since the air conditioner is originally a high-energy-consuming electrical appliance, the energy-saving performance of the air conditioner often attracts the attention of users. In order to help users better understand the energy consumption levels of different air conditioners, the country has introduced air conditioner energy efficiency rating standards in order to better judge the energy efficiency level of air conditioners. However, since the energy efficiency standards of existing air conditioners are all evaluated for the overall energy efficiency under full load conditions, the energy-savi...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem of low energy efficiency of existing air conditioners under partial load conditions, the present invention provides a heat exchange device for an air conditioner, the heat exchange device It includes a plurality of heat exchange components, the heat exchange components include a first heat exchange branch and a second heat exchange branch connected in parallel, a first switching valve is arranged on the first heat exchange branch, and the first heat exchange branch A second switching valve is provided on the two heat exchange branches, a communication branch is provided between the first heat exchange branch and the second heat exchange branch, a check valve is provided on the communication branch, and the One end of the communication branch is connected to the upstream of the first switch valve of the first heat exchange branch, and the other end of the communication branch is connected to the second switch of the second heat exchange branch downstream of the valve

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