Control device, air-conditioning heat pump system and a control method of air-conditioning heat pump system

A technology of a heat pump system and control method, which is applied in the directions of refrigerators, refrigeration components, refrigeration and liquefaction, etc., to achieve the effect of improving overall performance, ensuring defrosting effect, and ensuring defrosting quality.

CN111426090AActive Publication Date: 2020-07-17QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-07-17

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Abstract

The invention relates to a control device, an air-conditioning heat pump system and a control method of the air-conditioning heat pump system. The air-conditioning heat pump system comprises a compressor, a gas-liquid separator, an intermediate heat exchanger, an outdoor heat exchanger and an indoor heat exchanger which are connected through a refrigerant pipeline; the immediate heat exchanger comprises a first heat exchange pipeline and a second heat exchange pipeline; a first electronic expansion valve is arranged on a main path of the refrigerant pipeline; the indoor heat exchanger is provided with a second electronic expansion valve; the outdoor heat exchanger comprises a first portion and a second portion arranged on a bypass branch; the first side of the bypass branch is connected between the first end of the first heat exchange pipeline and the second electronic expansion valve; the second side of the bypass branch is connected to the first end of the second heat exchange pipeline; the second end of the second heat exchange pipeline is connected to an enthalpy increasing port of the compressor and / or the gas-liquid separator; and a valve and a third electronic expansion valve are arranged on the bypass branch. Therefore, it is possible to improve the overall performance of the air-conditioning heat pump system.
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Description

technical field

[0001] The invention relates to the technical field of air conditioning, in particular to a control device, an air conditioning heat pump system and a control method thereof. Background technique

[0002] Air-conditioning heat pump systems (such as air-cooled air-conditioning air-conditioning heat pump systems) usually have a cooling mode and a heating mode. Or capillary tube, etc.) - indoor heat exchanger (commonly called evaporator) - circulation in the circuit formed by the compressor, which can provide air at the right temperature to the room. When the air conditioner is in heating mode, there may be frost on the outdoor heat exchanger. Specifically, when the evaporating temperature is lower than the dew point temperature corresponding to the outdoor ambient temperature, the coil of the outdoor unit of the air conditioner begins to frost. When the frost layer on the outer wall of the coil of the outdoor unit of the air conditioner reaches a certain thick...

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Embodiment Construction

[0040] In order to facilitate the understanding of the invention, the present invention will be described more comprehensively and in detail below in conjunction with the accompanying drawings and embodiments, but those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to Limit the protection scope of the present invention. Although this embodiment is described as a multi-split unit including one air-conditioning outdoor unit and multiple air-conditioning indoor units, it is obvious that the multi-split unit can also be in other forms, such as multiple air-conditioning outdoor units.

[0041] In the description of the present invention, "module" and "processor" may include hardware, software or a combination of both. A module may include hardware circuits, various suitable sensors, communication ports, memory, and may also include software parts, such as program codes, or...