CN-121993848-A - Heat exchange system, humidifying method thereof and air conditioner

CN121993848ACN 121993848 ACN121993848 ACN 121993848ACN-121993848-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 circulation pipeline and a humidifying pipeline, the refrigerant circulation pipeline is used for circulating a refrigerant, the humidifying pipeline is used for circulating humidifying water, 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 in heat exchange connection with at least part of the refrigerant circulation pipeline and is used for preheating the humidifying water, the vaporization part is used for heating and vaporizing the humidifying water for the second time, the humidifying pipeline also comprises a backflow part, and the backflow part is used for shunting the preheated humidifying water at the 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.

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 (10)

1. A heat exchange system for an air conditioner, comprising: A refrigerant circulation pipeline for circulating the refrigerant and The humidifying pipeline is used for circulating humidifying water and 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 in heat exchange connection with at least part of the refrigerant circulating pipeline and is used for preheating the humidifying water, and the vaporization part is used for secondarily heating the humidifying water so as to heat and vaporize the humidifying water; The humidifying pipeline further comprises a backflow part, wherein the backflow part is used for shunting the preheated humidifying water at the 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.
2. The heat exchange system as set forth in claim 1, wherein said humidification circuit further comprises a reservoir comprising a liquid inlet and a first liquid outlet, said liquid inlet and said first liquid outlet being in communication with an outlet end of said heat exchange portion and an inlet end of said vaporization portion, respectively, said reservoir for storing preheated humidification water; The liquid storage part also comprises a second liquid outlet, the inlet end of the backflow part is communicated with the second liquid outlet, and the outlet end of the backflow part is communicated with the liquid inlet of the heat exchange part.
3. The heat exchange system as set forth in claim 2, wherein said reservoir further comprises a temperature detection mechanism for detecting the temperature of said humidification water stored in said reservoir; and/or the liquid storage part further comprises a first water level detection mechanism for detecting the water level of the humidifying water stored in the liquid storage part.
4. A heat exchange system as claimed in any one of claims 1 to 3 wherein the return includes a first control pump which is arranged to be openable and closable for controlling the conduction or interruption of the return.
5. A heat exchange system as claimed in any one of claims 1 to 3 wherein the vaporisation portion comprises a second control pump which is arranged to be openable and closable for controlling the switching on or off of the vaporisation portion.
6. An air conditioner comprising the heat exchange system according to any one of claims 1 to 5, the heat exchange system comprising an indoor heat exchange portion and an outdoor heat exchange portion, a vaporization portion of the heat exchange system being disposed in the indoor heat exchange portion.
7. A method of humidifying a heat exchange system, the method comprising the steps of: Controlling the connection of the humidifying pipeline to obtain the first liquid temperature of the humidifying water at the inlet end of the reflux part; And respectively controlling the upstream liquid flow of the heat exchange part and the liquid flow of the reflux part according to the magnitude relation between the first liquid temperature and the preset temperature interval.
8. The method according to claim 7, wherein the preset temperature interval includes a first temperature interval and a second temperature interval, a maximum critical value of the first temperature interval is equal to a minimum critical value of the second temperature interval, and the step of controlling the liquid flow rates of the liquid inlet portion and the heat exchange portion of the heat exchange system according to the magnitude relation between the first liquid temperature and the preset temperature interval includes: When the first liquid temperature is smaller than the minimum critical value of the first temperature interval, controlling the upstream of the heat exchange part and the reflux part to be continuously conducted; When the first liquid temperature is larger than or equal to the minimum critical value of the first temperature interval and smaller than the maximum critical value of the first temperature interval, controlling the upstream intermittent conduction of the heat exchange part and the interruption of the reflux part; When the temperature of the first liquid is larger than or equal to the minimum critical value of the second temperature interval and smaller than the maximum critical value of the second temperature interval, controlling the upstream continuous conduction of the heat exchange part and the interruption of the reflux part; And when the temperature of the first liquid is greater than the maximum critical value of the second temperature interval, controlling the upstream of the heat exchange part and the reflux part to be separated.
9. The humidification method according to claim 7, wherein after the step of controlling the flow rate of the liquid upstream of the heat exchange portion and the flow rate of the liquid of the reflux portion, respectively, according to the magnitude relation between the first liquid temperature and a preset temperature interval, the step of: acquiring a second liquid temperature of the humidifying water at the inlet end of the vaporizing part; And controlling the conduction or the separation of the vaporization part according to the magnitude relation between the second liquid temperature and a preset temperature threshold value.
10. The humidification method of claim 7, wherein the step of controlling the liquid flow rates of the liquid inlet portion and the liquid flow-back portion of the heat exchange system according to the magnitude relation between the first liquid temperature and the preset temperature interval comprises: when the first liquid temperature is greater than or equal to the minimum critical value of the preset temperature interval, controlling the opening of the electronic expansion valve of the refrigerant circulation pipeline to be a preset opening; When the first liquid temperature is smaller than the minimum critical value of the preset temperature interval, controlling the opening of the electronic expansion valve to be reduced compared with the preset opening.

Description

Heat exchange system, humidifying 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 humidifying 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 humidifying 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: A refrigerant circulation pipeline for circulating the refrigerant and The humidifying pipeline is used for circulating humidifying water and 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 in heat exchange connection with at least part of the refrigerant circulating pipeline and is used for preheating the humidifying water, and the vaporization part is used for secondarily heating the humidifying water so as to heat and vaporize the humidifying water; The humidifying pipeline further comprises a backflow part, wherein the backflow part is used for shunting the preheated humidifying water at the 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. In an embodiment, the humidifying pipeline further comprises a liquid storage part, the liquid storage part comprises a liquid inlet and a first liquid outlet, the liquid inlet and the first liquid outlet are respectively communicated with the outlet end of the heat exchange part and the inlet end of the vaporization part, and the liquid storage part is used for storing preheated humidifying water; The liquid storage part also comprises a second liquid outlet, the inlet end of the backflow part is communicated with the second liquid outlet, and the outlet end of the backflow part is communicated with the liquid inlet of the heat exchange part. In an embodiment, the liquid storage part further includes a temperature detection mechanism for detecting a temperature of the humidification water stored in the liquid storage part; and/or the liquid storage part further comprises a first water level detection mechanism for detecting the water level of the humidifying water stored in the liquid storage part. In an embodiment, the backflow part comprises a first control pump, and the first control pump can be arranged in an opening and closing mode and is used for controlling the conduction or the separation of the backflow part. In an embodiment, the vaporizing portion includes a second control pump, and the second control pump is configured to be opened and closed, and is used for controlling the conduction or the disconnection of the vaporizing portion. 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. 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 first liquid temperature of the humidifying water at the inlet end of the reflux part; And respectively controlling the upstream liquid flow of the heat exchange part and the liquid flow of the reflux part according to the magnitude relation between the first liquid temperature and the preset temperature interval. In one embodiment, the preset temperature interval includes a first temperature interval and a second temperature interval, the maximum critical value of the first temperature interval is equal to the minimum critical value of the second temperature interval, and the step of controlling the liquid flow rates of the liquid inlet portion and the heat exchange portion of the hea