CN-121993846-A - Heat exchange system, control method thereof and air conditioner

CN121993846ACN 121993846 ACN121993846 ACN 121993846ACN-121993846-A

Abstract

The invention discloses a heat exchange system, a humidifying method thereof and an air conditioner, and relates to the technical field of household appliances, wherein the heat exchange system comprises a refrigerant circulating pipeline, an auxiliary circulating pipeline and a humidifying pipeline, and the refrigerant circulating pipeline is used for circulating and circulating a refrigerant; the humidifying pipeline is used for humidifying water circulation, the humidifying pipeline comprises a heat exchange part and a vaporization part which are sequentially arranged along the flowing direction of the humidifying water, the heat exchange part is connected with at least part of the auxiliary circulating pipeline in a heat exchange mode and is used for preheating the humidifying water, and the vaporization part is used for secondarily heating the humidifying water so as to enable the humidifying water to be heated and vaporized. According to the technical scheme, the energy consumption of the humidifying module can be reduced, and the energy-saving effect is achieved.

Inventors

ZHOU XIANGYANG
LI XIANGYANG
LIU ZHIQIANG
ZHANG SHAOWU
ZHOU HEJIE
TAN JIEXING
Xiao Qingri

Assignees

广东美的制冷设备有限公司
美的集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (12)

1. A heat exchange system for an air conditioner, comprising: the refrigerant circulation pipeline is used for circulating the refrigerant; an auxiliary circulation line connected in parallel with at least a part of the refrigerant circulation line to branch the refrigerant from the refrigerant circulation line, and The humidifying pipeline is used for humidifying water circulation, the humidifying pipeline comprises a heat exchange part and a vaporization part which are sequentially arranged along the circulating direction of the humidifying water, the heat exchange part is connected with at least part of the auxiliary circulating pipeline in a heat exchange mode and is used for preheating the humidifying water, and the vaporization part is used for secondarily heating the humidifying water so that the humidifying water is heated and vaporized.
2. The heat exchange system as set forth in claim 1, wherein said refrigerant circulation line comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger which are sequentially communicated; The auxiliary circulating pipeline is arranged in parallel between the four-way valve and the indoor heat exchanger.
3. The heat exchange system as set forth in claim 1, wherein said refrigerant circulation line comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger which are sequentially communicated; The auxiliary circulating pipeline is arranged in parallel between the exhaust port of the compressor and the indoor heat exchanger.
4. A heat exchange system according to any one of claims 1 to 3 wherein the refrigerant circulation line is provided with a control valve for controlling the refrigerant flow rate of the refrigerant circulation line.
5. A heat exchange system according to any one of claims 1 to 3 wherein the humidification circuit further comprises a return for diverting the preheated humidification water downstream of the heat exchange portion to return at least part of the humidification water upstream of the heat exchange portion.
6. An air conditioner according to any one of claims 1 to 5, wherein the heat exchange system includes an indoor heat exchange portion and an outdoor heat exchange portion, and a vaporizing portion of the heat exchange system is disposed in the indoor heat exchange portion.
7. The air conditioner as set forth in claim 6, wherein the indoor heat exchange part includes: a shell provided with an air outlet, and The fan is arranged in the shell, is arranged opposite to the air outlet at intervals and is used for supplying air towards the air outlet; the vaporization part comprises a heating module, the heating module is arranged in the shell and is provided with a steam outlet, and the steam outlet is positioned between the air outlet and the fan and is used for outputting steam to an air supply path of the fan.
8. The air conditioner as set forth in claim 7, wherein a heat exchanging portion of said heat exchanging system and at least part of said auxiliary circulation line are disposed at said indoor heat exchanging portion.
9. A method of humidifying a heat exchange system according to any one of claims 1 to 5, wherein the method comprises the steps of: Controlling the connection of the humidifying pipeline to obtain the liquid temperature of the humidifying water at the inlet end of the vaporizing part; And controlling the refrigerant flow of the auxiliary circulation pipeline according to the size relation between the liquid temperature and a preset temperature interval.
10. The humidification method of claim 9, wherein the step of controlling the flow rate of the refrigerant in the auxiliary circulation line according to the magnitude relation between the liquid temperature and a preset temperature interval comprises: When the liquid temperature is greater than or equal to the maximum critical value of the preset temperature interval, the auxiliary circulating pipeline is controlled to be cut off; And when the liquid temperature is smaller than the maximum critical value of the preset temperature interval, controlling the auxiliary circulating pipeline to be conducted.
11. The method according to claim 10, wherein the predetermined temperature range includes a first temperature range and a second temperature range, a maximum critical value of the first temperature range is equal to a minimum critical value of the second temperature range, and the step of controlling the auxiliary circulation line to be turned on when the liquid temperature is equal to or higher than the maximum critical value of the predetermined temperature range includes: When the liquid temperature is smaller than the minimum critical value of the first temperature interval, controlling the refrigerant flow of the auxiliary circulating pipeline to be a first flow L1; when the temperature of the liquid is greater than or equal to the minimum critical value of the first temperature interval and is smaller than the maximum critical value of the first temperature interval, controlling the flow rate of the refrigerant of the auxiliary circulation pipeline to be a second flow rate L2, wherein the second flow rate L2 is smaller than the first flow rate L1; When the temperature of the liquid is greater than or equal to the minimum critical value of the second temperature interval and is smaller than the maximum critical value of the second temperature interval, controlling the flow rate of the refrigerant of the auxiliary circulation pipeline to be a third flow rate L3, wherein the third flow rate L3 is smaller than the second flow rate L2.
12. The humidification method of claim 9, wherein the step of controlling the flow rate of the refrigerant in the auxiliary circulation line according to the magnitude relation between the liquid temperature and the preset temperature interval comprises: and controlling the opening of the electronic expansion valve of the refrigerant circulation pipeline and/or the liquid flow of the humidifying pipeline according to the size relation between the liquid temperature and the preset temperature interval.

Description

Heat exchange system, control method thereof and air conditioner Technical Field The invention relates to the technical field of household appliances, in particular to a heat exchange system, a control method thereof and an air conditioner. Background The humidifying pipe of an air conditioner, such as an air duct machine, is generally separately installed outside an indoor unit and is provided independently of the refrigerant circulation pipe of the air conditioner. The humidifying pipeline comprises a heating module, humidifying water can be converted into steam in an electric heating mode, and the steam is conveyed to the indoor unit through the steam conveying pipe so as to be conveyed into an indoor environment through an air outlet of the indoor unit. Because the humidification pipeline adopts the heating module to independently complete the heating vaporization mode, the power of the heating module is required to be high, the energy conversion efficiency of the heating module is low, and the energy consumption of the humidification module is high. Disclosure of Invention The invention mainly aims to provide a heat exchange system, a control method thereof and an air conditioner, and aims to preheat humidifying water on a humidifying pipeline through a refrigerant circulating pipeline so as to achieve an energy-saving effect. In order to achieve the above object, the heat exchange system according to the present invention includes: the refrigerant circulation pipeline is used for circulating the refrigerant; an auxiliary circulation line connected in parallel with at least a part of the refrigerant circulation line to branch the refrigerant from the refrigerant circulation line, and The humidifying pipeline is used for humidifying water circulation, the humidifying pipeline comprises a heat exchange part and a vaporization part which are sequentially arranged along the circulating direction of the humidifying water, the heat exchange part is connected with at least part of the auxiliary circulating pipeline in a heat exchange mode and is used for preheating the humidifying water, and the vaporization part is used for secondarily heating the humidifying water so that the humidifying water is heated and vaporized. In one embodiment, the refrigerant circulation pipeline comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger which are sequentially communicated; The auxiliary circulating pipeline is arranged in parallel between the four-way valve and the indoor heat exchanger. In one embodiment, the refrigerant circulation pipeline comprises a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger which are sequentially communicated; The auxiliary circulating pipeline is arranged in parallel between the exhaust port of the compressor and the indoor heat exchanger. In one embodiment, the refrigerant circulation pipeline is provided with a control valve for controlling the refrigerant flow rate of the refrigerant circulation pipeline. In an embodiment, the humidifying pipe further comprises a backflow part, and the backflow part is used for diverting the preheated humidifying water downstream of the heat exchange part so as to enable at least part of the humidifying water to flow back to the upstream of the heat exchange part. The invention also provides an air conditioner, which comprises the heat exchange system, wherein the heat exchange system comprises an indoor heat exchange part and an outdoor heat exchange part, and the vaporization part of the heat exchange system is arranged on the indoor heat exchange part. In one embodiment, the indoor heat exchange part includes: a shell provided with an air outlet, and The fan is arranged in the shell, is arranged opposite to the air outlet at intervals and is used for supplying air towards the air outlet; the vaporization part comprises a heating module, the heating module is arranged in the shell and is provided with a steam outlet, and the steam outlet is positioned between the air outlet and the fan and is used for outputting steam to an air supply path of the fan. At least part of the heat exchange system and the auxiliary circulating pipeline are configured in the indoor heat exchange part and are in heat exchange connection with each other. The invention also provides a humidifying method based on the heat exchange system, which comprises the following steps: Controlling the connection of the humidifying pipeline to obtain the liquid temperature of the humidifying water at the inlet end of the vaporizing part; And controlling the refrigerant flow of the auxiliary circulation pipeline according to the size relation between the liquid temperature and a preset temperature interval. In an embodiment, the step of controlling the refrigerant flow rate of the auxiliary circulation line according to the magnitude relation between the liquid temperature and the preset temperature interval inc