Heat exchange system, humidifying method thereof and air conditioner

Abstract

The invention discloses a heat exchange system, a humidifying method thereof and an air conditioner, and relates to the technical field of life electric appliances, the heat exchange system comprises a refrigerant circulation pipeline and a humidifying pipeline, and the refrigerant circulation pipeline is used for refrigerant circulation; the humidification pipeline is used for circulation of humidification water and comprises a heat exchange part and a vaporization part which are sequentially arranged in the circulation direction of the humidification water, the heat exchange part is connected with at least part of the refrigerant circulation pipeline in a heat exchange mode and used for preheating the humidification water, and the vaporization part is used for secondary heating of the humidification water so that the humidification water can be heated and vaporized; the humidifying pipeline further comprises a backflow part, and the backflow part is used for dividing the preheated humidifying water at the downstream of the heat exchange part so that at least part of the humidifying water can flow back to the upstream of the heat exchange part; according to the technical scheme, the energy consumption of the humidifying module can be reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a heat exchange system and its humidification method, and an air conditioner. Background Technology

[0002] In air conditioners, such as ducted air conditioners, the humidification piping is typically installed separately outside the indoor unit and is independent of the refrigerant circulation piping. This humidification piping includes a heating module that electrically heats the water for humidification, converting it into steam. The steam is then transported to the indoor unit via a steam delivery pipe and distributed into the room through the unit's air outlet. Because the humidification piping uses a separate heating module for vaporization, it requires a high-power heating module, and the module's energy conversion efficiency is relatively low, resulting in high energy consumption for the humidification module. Summary of the Invention

[0003] The main objective of this invention is to propose a heat exchange system and its humidification method, as well as an air conditioner, which aims to preheat the humidification water in the humidification pipeline through a refrigerant circulation pipeline to achieve energy-saving effects.

[0004] To achieve the above objectives, the heat exchange system proposed in this invention includes:

[0005] Refrigerant circulation piping is used for refrigerant circulation; and

[0006] A humidification pipeline for the flow of humidification water, the humidification pipeline including a heat exchange section and a vaporization section arranged sequentially along the flow direction of the humidification water, the heat exchange section being at least partially heat-exchange connected to the refrigerant circulation pipeline for preheating the humidification water, and the vaporization section being used for secondary heating of the humidification water to heat and vaporize the humidification water;

[0007] The humidification pipeline also includes a return section, which is used to divert the preheated humidification water downstream of the heat exchange section so that at least a portion of the humidification water flows back to the upstream of the heat exchange section.

[0008] In one embodiment, the humidification pipeline further includes a liquid storage section, which includes an inlet and a first outlet. The inlet and the first outlet are respectively connected to the outlet end of the heat exchange section and the inlet end of the vaporization section. The liquid storage section is used to store the preheated humidification water.

[0009] The liquid storage section further includes a second liquid outlet, the inlet end of the reflux section is connected to the second liquid outlet, and the outlet end of the reflux section is connected to the liquid inlet of the heat exchange section.

[0010] In one embodiment, the liquid storage unit further includes a temperature detection mechanism for detecting the temperature of the humidifying water stored in the liquid storage unit;

[0011] And / or, the liquid storage unit further includes a first water level detection mechanism for detecting the water level of the humidifying water stored in the liquid storage unit.

[0012] In one embodiment, the reflux section includes a first control pump, which is configured to be open and closed to control the conduction or interruption of the reflux section.

[0013] In one embodiment, the vaporization section includes a second control pump, which is configured to be open and closed to control the conduction or interruption of the vaporization section.

[0014] The present invention also proposes an air conditioner including a heat exchange system as described above, the heat exchange system including an indoor heat exchange section and an outdoor heat exchange section, wherein the vaporization section of the heat exchange system is disposed in the indoor heat exchange section.

[0015] The present invention also proposes a humidification method based on the heat exchange system described above, comprising the following steps:

[0016] Control the humidification pipeline to open, and obtain the first liquid temperature of the humidification water at the inlet end of the reflux section;

[0017] Based on the relationship between the first liquid temperature and the preset temperature range, the liquid flow rate upstream of the heat exchange section and the liquid flow rate of the return section are controlled respectively.

[0018] In one embodiment, the preset temperature range includes a first temperature range and a second temperature range, wherein the maximum critical value of the first temperature range is equal to the minimum critical value of the second temperature range; the step of "controlling the liquid flow rate of the inlet section and the heat exchange section of the heat exchange system according to the relationship between the first liquid temperature and the preset temperature range" includes:

[0019] When the temperature of the first liquid is less than the minimum critical value of the first temperature range, the upstream of the heat exchange section and the reflux section are kept connected.

[0020] When the temperature of the first liquid is greater than or equal to the minimum critical value of the first temperature range, but less than the maximum critical value of the first temperature range, the upstream of the heat exchange section is intermittently connected and the reflux section is disconnected.

[0021] When the temperature of the first liquid is greater than or equal to the minimum critical value of the second temperature range and less than the maximum critical value of the second temperature range, the upstream of the heat exchange section is controlled to remain open and the reflux section is cut off.

[0022] When the temperature of the first liquid is greater than the maximum critical value of the second temperature range, the upstream of the heat exchange section and the reflux section are both disconnected.

[0023] In one embodiment, after the step of "controlling the liquid flow rate upstream of the heat exchange section and the liquid flow rate of the reflux section according to the relationship between the first liquid temperature and the preset temperature range", the method includes:

[0024] The second liquid temperature of the humidifying water at the inlet end of the vaporization section is obtained;

[0025] The opening or closing of the vaporization section is controlled according to the relationship between the second liquid temperature and the preset temperature threshold.

[0026] In one embodiment, the step of "controlling the liquid flow rate of the inlet section and the reflux section of the heat exchange system according to the relationship between the first liquid temperature and the preset temperature range" includes:

[0027] When the temperature of the first liquid is greater than or equal to the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve of the refrigerant circulation pipeline is controlled to be the preset opening degree.

[0028] When the temperature of the first liquid is less than the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve is reduced compared to the preset opening degree.

[0029] The heat exchange system proposed in this invention includes a refrigerant circulation pipeline for circulating refrigerant and a humidification pipeline for circulating humidification water. The humidification pipeline includes a heat exchange section and a vaporization section arranged sequentially along the flow direction of the humidification water. At least a portion of the heat exchange section and the refrigerant circulation pipeline are heat-exchange connected, thereby enabling heat exchange between the refrigerant circulation pipeline and the humidification pipeline. This allows for preheating of the humidification water by first transferring heat between the refrigerant and the humidification water through the heat exchange section, followed by secondary heating and vaporization through the vaporization section. Since the energy conversion efficiency of the refrigerant circulation pipeline is higher than that of the humidification module, using the heat energy in the refrigerant circulation pipeline to heat the humidification water has lower energy consumption, achieving rational utilization of heat energy in the heat exchange system. This contributes to reducing the overall energy consumption of the heat exchange system and thus achieving energy conservation. In addition, a reflux section is connected between the inlet and outlet ends of the heat exchange section. The reflux section and the heat exchange section can be connected to form a circulation loop, so that at least part of the humidifying water circulates between the reflux section and the heat exchange section through the circulation loop. In this way, part of the humidifying water can flow through the heat exchange section multiple times through the circulation loop to achieve multiple heating, thereby ensuring the preheating effect of the humidifying water and making full use of the heat energy in the refrigerant circulation pipeline to further achieve energy saving effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a structure of an embodiment of the heat exchange system provided by the present invention;

[0032] Figure 2 This is a schematic diagram of another embodiment of the heat exchange system provided by the present invention;

[0033] Figure 3 A flowchart of an embodiment of the heat exchange system provided by the present invention;

[0034] Figure 4 A flowchart of another embodiment of the air conditioner indoor unit provided by the present invention;

[0035] Figure 5 A flowchart of yet another embodiment of the air conditioner indoor unit provided by the present invention.

[0036] Explanation of icon numbers:

[0037] 100. Heat exchange system; 10. Refrigerant circulation pipeline; 11. Compressor; 12. Four-way valve; 13. Outdoor heat exchanger; 14. Indoor heat exchanger; 20. Humidification pipeline; 21. Heat exchange section; 22. Return flow section; 221. First control pump; 23. Vaporization section; 231. Second control pump; 24. Liquid storage section; 25. Liquid inlet section; 251. Third control pump; 252. Liquid inlet module.

[0038] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] In air conditioners, such as ducted air conditioners, the humidification piping is typically installed separately outside the indoor unit and is independent of the refrigerant circulation piping. This humidification piping includes a heating module that electrically heats the water for humidification, converting it into steam. The steam is then transported to the indoor unit via a steam delivery pipe and distributed into the room through the unit's air outlet. Because the humidification piping uses a separate heating module for vaporization, it requires a high-power heating module, and the module's energy conversion efficiency is relatively low, resulting in high energy consumption for the humidification module.

[0043] Based on the above problems, the present invention proposes a heat exchange system 100 for use in air conditioners, which aims to preheat the humidifying water on the humidifying pipe 20 through the refrigerant circulation pipe 10 to achieve energy-saving effect.

[0044] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the heat exchange system 100 includes a refrigerant circulation pipeline 10 and a humidification pipeline 20. The refrigerant circulation pipeline 10 is used for refrigerant circulation; the humidification pipeline 20 is used for humidification water circulation. The humidification pipeline 20 includes a heat exchange section 21 and a vaporization section 23 arranged sequentially along the flow direction of the humidification water. The heat exchange section 21 and the refrigerant circulation pipeline 10 are at least partially heat-exchange connected for preheating the humidification water. The vaporization section 23 is used for secondary heating of the humidification water to vaporize it. The humidification pipeline 20 also includes a return section 22, which is used to divert the preheated humidification water downstream of the heat exchange section 21 so that at least a portion of the humidification water flows back to the upstream of the heat exchange section 21.

[0045] It is understood that the heat exchange system 100 proposed in the technical solution of the present invention includes a refrigerant circulation pipe 10 for circulating refrigerant and a humidification pipe 20 for circulating humidification water. The humidification pipe 20 includes a heat exchange section 21 and a vaporization section 23 arranged sequentially along the flow direction of the humidification water. The heat exchange section 21 and the refrigerant circulation pipe 10 are at least partially heat-exchange connected, thereby enabling heat exchange between the refrigerant circulation pipe 10 and the humidification pipe 20. In this way, heat transfer between the refrigerant and the humidification water can be achieved first through the heat exchange section 21 to preheat the humidification water, and then the humidification water can be further heated and vaporized through the vaporization section 23. Since the energy conversion efficiency of the refrigerant circulation pipe 10 is higher than that of the humidification module, the method of using the heat energy in the refrigerant circulation pipe 10 to heat the humidification water has lower energy consumption, realizing the rational use of heat energy in the heat exchange system 100, thereby helping to reduce the overall energy consumption of the heat exchange system 100 and achieving energy saving.

[0046] In this embodiment, the heat exchange section 21 includes a heat exchange module for achieving heat exchange connection between the heat exchange section 21 and at least a portion of the refrigerant circulation pipeline 10. In practical applications, the heat exchange module can specifically be a shell-and-tube heat exchanger, such as a coaxial heat exchanger. The coaxial heat exchanger has a first flow channel and a second flow channel formed inside, which are spaced apart to allow humidification water and refrigerant to flow through them respectively. This allows the refrigerant and humidification water to flow through the coaxial heat exchanger simultaneously. When the temperature of the refrigerant is higher than the temperature of the humidification water, the refrigerant can exchange heat with the humidification water, thereby raising the temperature of the humidification water and achieving a preheating effect.

[0047] In practical applications, the heat exchange module can also be a regenerative heat exchanger. The heat storage material in the regenerative heat exchanger can absorb the heat from the high-temperature refrigerant in the refrigerant circulation pipe 10 to store energy, and use the stored heat to preheat the humidification water. In practical applications, the heat exchanger can also be a fluid-connected indirect heat exchanger, etc., without specific limitations.

[0048] In this embodiment, the vaporization unit 23 includes a heating module. In practical applications, the heating module can be an electric heating humidifier, which can heat the humidification water by converting electrical energy into heat energy, thereby causing the water to boil and turn into water vapor.

[0049] In this embodiment, the reflux section 22 and the heat exchange section 21 are connected to form a circulation loop. In practical applications, the reflux section 22 is equipped with a first control pump 221, which can be turned on and off to control the opening or closing of the reflux section 22, thereby controlling the opening or closing of the circulation loop. When the first control pump 221 is turned on, the circulation loop is open, and at this time, part of the humidifying water at the outlet end of the heat exchange section 21 can be diverted into the circulation loop to return to the upstream of the heat exchange section 21. When the first control pump 221 is turned off, the circulation loop is closed, and at this time, the humidifying water at the outlet end of the heat exchange section 21 is no longer diverted and continues to flow towards the vaporization section 23.

[0050] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the refrigerant circulation pipeline 10 includes a heat-conducting pipe for circulating refrigerant; the heat exchange section 21 includes a heat exchange pipe, which is sleeved on at least part of the heat-conducting pipe and forms a liquid passage with the heat-conducting pipe for circulating humidifying water so that the humidifying water absorbs heat from the refrigerant.

[0051] In this embodiment, the shell-and-tube heat exchanger includes a heat-conducting tube and a heat exchange tube sleeved on the heat-conducting tube. A first flow channel is formed inside the heat-conducting tube, and a second flow channel is formed between the heat exchange tube and the heat-conducting tube. The first and second flow channels are spaced apart and used for the flow of humidifying water and refrigerant, respectively. Furthermore, by sleeved on the heat-conducting tube, the humidifying water can be enveloped around the refrigerant during the heat absorption process of heat exchange. This helps to prevent heat from the high-temperature refrigerant from escaping to the external environment and ensures the heat exchange efficiency between the refrigerant and the humidifying water.

[0052] It should be noted that, under the regulation of using high-temperature refrigerant in refrigerant circulation pipe 10 to preheat the humidification water in humidification pipe 20, by limiting the amount of humidification water used for heat exchange per unit time to be less than the amount of refrigerant, excessive heat loss of high-temperature refrigerant due to heat exchange can be avoided. This can reduce the impact of the heat exchange process between refrigerant circulation pipe 10 and humidification pipe 20 on the indoor and outdoor heat exchange process of refrigerant circulation pipe 10 itself, so that the refrigerant circulation pipe 10 of heat exchange system 100 can normally realize the heating and / or cooling functions.

[0053] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the heat-conducting pipe includes a plurality of first sub-pipes arranged side by side, the plurality of first sub-pipes being arranged at intervals in sequence, and the plurality of first sub-pipes being arranged in series end to end in sequence; the heat exchange pipe includes a plurality of second sub-pipes arranged side by side, each second sub-pipe being sleeved on a first sub-pipe, and the plurality of second sub-pipes being arranged in series end to end in sequence.

[0054] This configuration allows for sufficient heat exchange between the refrigerant and the humidifying water through several first sub-pipes and several second sub-pipes, ensuring the preheating effect of the high-temperature refrigerant on the humidifying water.

[0055] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the humidification pipeline 20 further includes a liquid storage section 24, which includes an inlet and a first outlet. The inlet and the first outlet are respectively connected to the outlet end of the heat exchange section 21 and the inlet end of the vaporization section 23. The liquid storage section 24 is used to store the preheated humidification water.

[0056] The liquid storage section 24 also includes a second liquid outlet, the inlet end of the reflux section 22 is connected to the second liquid outlet, and the outlet end of the reflux section 22 is connected to the liquid inlet of the heat exchange section 21.

[0057] With this configuration, the circulation loop consisting of the heat exchange section 21 and the return section 22 also includes a liquid storage section 24, which can store the preheated humidifying water to form a buffer space for the humidifying water in the circulation loop.

[0058] In practical applications, the liquid storage section 24 can be a water storage tank, which contains a liquid storage cavity. The outer wall of the water storage tank has an inlet, a first outlet, and a second outlet that communicate with the liquid storage cavity. The inlet and the first outlet are connected to the outlet of the heat exchange section 21 and the inlet of the vaporization section 23, respectively. This allows at least a portion of the humidifying water to flow sequentially through the heat exchange section 21 and the liquid storage section 24 before entering the vaporization section 23 for heating and vaporization. The second outlet is connected to the inlet of the reflux section 22, and the outlet of the reflux section 22 is connected to the inlet of the heat exchange section 21. This allows at least a portion of the humidifying water to flow sequentially through the heat exchange section 21 and the liquid storage section 24 before entering the reflux section 22, where it re-enters the heat exchange section 21 for heat exchange with the refrigerant circulation pipeline 10.

[0059] In practical applications, the humidifying water stored in the liquid storage section 24 can circulate once along the flow path of the liquid storage section 24, the reflux section 22, and the heat exchange section 21, and then enter the vaporization section 23 for secondary heating and vaporization. Of course, the humidifying water stored in the liquid storage section 24 can circulate multiple times along the flow path of the liquid storage section 24, the reflux section 22, and the heat exchange section 21, and then enter the vaporization section 23 for secondary heating and vaporization. The specific method can be determined according to the actual usage situation, and no specific limitation is made here.

[0060] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the liquid storage unit 24 further includes a temperature detection mechanism for detecting the temperature of the humidifying water stored in the liquid storage unit 24.

[0061] This configuration allows for real-time monitoring of the humidifying water temperature within the storage compartment 24, preventing damage to downstream components due to excessively high humidifying water temperature. Furthermore, by monitoring the humidifying water temperature in real-time, the return compartment 22 can be activated when the temperature is low, allowing the humidifying water in the storage compartment 24 to re-enter the heat exchange compartment 21 for heat exchange, thus ensuring effective preheating of the humidifying water.

[0062] As examples, when the liquid temperature of the humidifying water in the storage section 24 is low, the flow rate of the humidifying water in the heat exchange section 21 can be reduced to ensure that the humidifying water in the humidification pipeline 20 is sufficiently heated, thereby increasing the heating rate of the humidifying water. Conversely, when the liquid temperature of the humidifying water is high, the flow rate of the humidifying water in the heat exchange section 21 can be increased to slow down the heating rate of the humidifying water.

[0063] In practical applications, the flow rate of humidifying water in the heat exchange section 21 can be reduced by decreasing the flow rate of the liquid inlet section 25 upstream of the heat exchange section 21; or, the flow rate of humidifying water in the heat exchange section 21 can be reduced by decreasing the flow rate of the return section 22.

[0064] As examples, when the liquid temperature of the humidifying water in the liquid storage section 24 is low, the heating efficiency of the humidifying water can be improved by increasing the refrigerant flow rate in the refrigerant circulation pipe 10; correspondingly, when the liquid temperature of the humidifying water is low, the heating rate of the humidifying water can be slowed down by reducing the refrigerant flow rate in the refrigerant circulation pipe 10.

[0065] As examples, when the liquid temperature of the humidifying water in the liquid storage section 24 is low, the temperature of the refrigerant used for heat exchange can be increased by increasing the exhaust temperature of the refrigerant circulation pipe 10, thereby improving the heating efficiency of the humidifying water; correspondingly, when the liquid temperature of the humidifying water is low, the temperature of the refrigerant used for heat exchange can be reduced by decreasing the exhaust temperature of the refrigerant circulation pipe 10, thereby slowing down the heating rate of the humidifying water.

[0066] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the liquid storage unit 24 further includes a first water level detection mechanism for detecting the water level of the humidification water stored in the liquid storage unit 24.

[0067] This setup allows for real-time monitoring of the humidification water level in the liquid storage section 24, preventing insufficient water storage and ensuring that the water supply tank has enough humidification water for the normal operation of the air conditioner's humidification function.

[0068] As examples, when the water level of the humidifying water in the liquid storage section 24 is low, the flow rate of the humidifying water in the heat exchange section 21 and its upstream liquid inlet section 25 can be increased so that the amount of humidifying water entering the liquid storage section 24 through the liquid inlet is greater than the amount of humidifying water flowing out from the first liquid outlet and / or the second liquid outlet, so that the water level of the humidifying water in the liquid storage section 24 rises to the target water level or the minimum critical value of the target water level range.

[0069] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the refrigerant circulation pipeline 10 includes a compressor 11 and a four-way valve 12 connected in sequence. At least a portion of the refrigerant circulation pipeline 10 is connected in series between the compressor 11 and the four-way valve 12 and is connected to the heat exchange section 21 for heat exchange.

[0070] In this embodiment, the refrigerant circulation pipeline 10 includes a compressor 11 and a four-way valve 12. The exhaust port of the compressor 11 is connected to the first end of the four-way valve 12, and the return port of the compressor 11 is connected to the second end of the four-way valve 12.

[0071] In this embodiment, the refrigerant circulation pipeline 10 also includes an indoor heat exchanger and an outdoor heat exchanger. One end of the indoor heat exchanger 14 is connected to the third end of the four-way valve 12, and the other end is connected to a throttling device. One end of the outdoor heat exchanger is connected to the fourth end of the four-way valve 12, and the other end is connected to a throttling device. In this way, the compressor 11, the four-way valve 12, the indoor heat exchanger, and the outdoor heat exchanger can be connected to form the refrigerant circulation pipeline 10, so that the refrigerant can circulate in the refrigerant circulation pipeline 10.

[0072] Optionally, the air conditioner has a heating mode and a cooling mode. In cooling mode, the refrigerant flows from the discharge port of the compressor 11 in the refrigerant circulation pipeline 10 to the four-way valve 12, and then flows sequentially through the outdoor heat exchanger 13, the throttling device, and the indoor heat exchanger 14, so that it successively condenses and releases heat and absorbs heat through the outdoor heat exchanger 13 and the indoor heat exchanger 14, and finally flows back to the return port of the compressor 11 through the four-way valve 12.

[0073] In heating mode, the refrigerant circulation pipeline 10 can be reversed by the four-way valve 12. After the four-way valve 12 is reversed, the refrigerant flows from the exhaust port of the compressor 11 to the four-way valve 12, and then flows through the indoor heat exchanger 14, the throttling device and the outdoor heat exchanger 13 in sequence, so as to condense and release heat and evaporate and absorb heat in sequence through the indoor heat exchanger 14 and the outdoor heat exchanger 13. Finally, it flows back to the return port of the compressor 11 through the four-way valve 12.

[0074] It should be noted that, since the refrigerant circulation pipe 10, which is connected to the heat exchange section 21, is connected in series between the compressor 11 and the four-way valve 12, in both heating and cooling modes, this part of the refrigerant circulation pipe 10 is used to circulate high-temperature refrigerant to exchange heat with the humidifying water in the humidifying pipe 20. This allows the air conditioner to preheat the humidifying water through the refrigerant circulation pipe 10 in both heating and cooling modes, thereby achieving energy-saving effects.

[0075] Please see Figure 1 , Figure 2 In an embodiment of the present invention, a temperature detection module is provided at one end of the vaporization section 23 facing the heat exchange section 21 for detecting the liquid temperature of the humidification water.

[0076] This configuration allows for real-time monitoring of the humidifying water temperature entering the vaporization section 23, preventing excessively high temperatures that could damage components such as the heating module within the vaporization section 23. Furthermore, by monitoring the humidifying water temperature in real-time, the heating efficiency of the humidifying water in the humidification pipeline 20 can be increased when the water temperature is low, thus achieving a better preheating effect.

[0077] As examples, when the liquid temperature of the humidifying water is low, the flow rate of the humidifying water in the humidifying pipe 20 can be reduced to ensure that the humidifying water in the humidifying pipe 20 is fully heated, thereby increasing the heating rate of the humidifying water. Conversely, when the liquid temperature of the humidifying water is high, the flow rate of the humidifying water can be increased to slow down the heating rate of the humidifying water.

[0078] As examples, when the liquid temperature of the humidifying water is low, the heating efficiency of the humidifying water can be improved by increasing the refrigerant flow rate of the refrigerant circulation pipe 10; correspondingly, when the liquid temperature of the humidifying water is low, the heating rate of the humidifying water can be slowed down by reducing the refrigerant flow rate of the refrigerant circulation pipe 10.

[0079] As examples, when the liquid temperature of the humidifying water is low, the temperature of the refrigerant used for heat exchange can be increased by increasing the exhaust temperature of the refrigerant circulation pipe 10, thereby improving the heating efficiency of the humidifying water; correspondingly, when the liquid temperature of the humidifying water is low, the temperature of the refrigerant used for heat exchange can be reduced by decreasing the exhaust temperature of the refrigerant circulation pipe 10, thereby slowing down the heating rate of the humidifying water.

[0080] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the reflux section 22 includes a first control pump 221, which is openable and closedable and used to control the conduction or isolation of the reflux section 22.

[0081] With this configuration, humidifying water can be pumped from downstream to upstream of the heat exchange section 21 via the first control pump 221, and the on / off state of the return section 22 can be controlled by turning the first control pump 221 on and off. Specifically, when the first control pump 221 is turned on, the return section 22 is in a conductive state, and at least a portion of the humidifying water can circulate in the loop formed by the connection between the return section 22 and the heat exchange section 21; when the first control pump 221 is turned off, the return section 22 is in an isolated state.

[0082] Optionally, the humidification water flow rate on the return section 22 can be controlled by controlling the ratio of the time the first control pump 221 is turned on and off per unit time.

[0083] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the vaporization section 23 includes a second control pump 231, which is openable and closedable to control the conduction or disconnection of the vaporization section 23.

[0084] With this configuration, humidifying water can be pumped from the heat exchange section 21 to the vaporization section 23 via the second control pump 231, and the on / off state of the return section 22 can be controlled by turning the second control pump 231 on and off. Specifically, when the second control pump 231 is turned on, the vaporization section 23 is in a conductive state, and at least a portion of the humidifying water can flow to the vaporization section 23 for secondary vaporization and heating; when the second control pump 231 is turned off, the vaporization section 23 is in an isolated state.

[0085] Optionally, the humidification water flow rate on the vaporization section 23 can be controlled by controlling the ratio of the time the second control pump 231 is turned on and off per unit time.

[0086] Please see Figure 1 , Figure 2 In an embodiment of the present invention, the humidification pipeline 20 further includes a liquid inlet section 25, which is connected in series upstream of the heat exchange section 21; the liquid inlet section 25 includes a control pump, which can be turned on and off to control the humidification pipeline 20 to be open or closed.

[0087] With this configuration, humidifying water can be pumped to the inlet of the heat exchange section 21 via the third control pump 251, and the on / off state of the liquid inlet section 25 can be controlled by turning the third control pump 251 on and off. Specifically, when the third control pump 251 is turned on, the liquid inlet section 25 is in a conductive state, and humidifying water can enter the inlet of the heat exchange section 21 through the liquid inlet section 25; when the third control pump 251 is turned off, the liquid inlet section 25 is in an isolated state.

[0088] Optionally, the humidification water flow rate on the liquid inlet section 25 can be controlled by controlling the ratio of the time the third control pump 251 is turned on and off per unit time.

[0089] Please see Figure 1 In one embodiment of the present invention, the liquid inlet section 25 further includes a liquid inlet module 252, which is connected in series upstream of the third control pump 251; the liquid inlet module 252 also includes a water supply tank, which is connected to the third control pump 251, and the water supply tank is provided with a water level detection mechanism and a water quality detection mechanism for detecting the water level and water quality of the humidification water respectively.

[0090] With this configuration, the humidifying water in the water supply tank can be pumped to the inlet of the heat exchange section 21 via the third control pump 251. A water level detection mechanism ensures sufficient humidifying water in the water supply tank for the air conditioner's humidification function. Furthermore, a water quality testing mechanism monitors the water quality in the tank to prevent excessive levels of calcium and magnesium ions in the humidifying water.

[0091] Please see Figure 2 In one embodiment of the present invention, the liquid inlet module 252 includes a water supply pipe, which is connected to a purifier and a third control pump 251.

[0092] This setup allows the purifier to clean the humidification water supplied by the water supply pipe, thus preventing the calcium and magnesium ion content in the humidification water from exceeding the standard.

[0093] As examples, the water supply pipe can be directly connected to an external water source, thereby continuously supplying water to the humidification pipe 20 through the external water source.

[0094] The present invention also proposes an air conditioner, which includes a heat exchange system 100. The specific structure of the heat exchange system 100 is as described in the above embodiments. Since the air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The heat exchange system 100 includes an indoor heat exchange part and an outdoor heat exchange part, and the vaporization part 23 of the heat exchange system 100 is disposed in the indoor heat exchange part.

[0095] Alternatively, the air conditioner can be a ducted air conditioner, a wall-mounted air conditioner, or a floor-standing air conditioner.

[0096] In an embodiment of the present invention, the indoor heat exchange section includes a housing (not shown) and a fan (not shown). The housing is provided with an air outlet. The fan is located inside the housing and is spaced apart from the air outlet for blowing air toward the air outlet. The vaporization section 23 includes a heating module located inside the housing and is provided with a steam outlet located between the air outlet and the fan for outputting steam to the air delivery path of the fan.

[0097] In this embodiment, the housing is the housing of the indoor unit of the air conditioner, and the fan and heating module are both integrated inside the housing of the indoor unit. With this configuration, the heating module can generate steam after reheating the humidifying water, and the steam can be output through the steam outlet of the heating module in the direction of the fan's airflow path. In this way, the steam can be delivered to the indoor environment where the indoor unit is located by the fan to achieve the function of humidifying the indoor environment.

[0098] Furthermore, compared to the technical solution of placing the heating module of the humidification pipe 20 outside the casing of the air conditioner indoor unit, first transporting steam to the air conditioner indoor unit through the steam delivery pipe, and then sending it into the indoor environment through the air outlet of the indoor unit, the technical solution of the present invention adopts the method of integrating the heating module inside the air conditioner indoor unit, which can effectively shorten the transport path between the steam and the air outlet, thereby helping to reduce the risk of steam condensation during the transport process, thus ensuring the humidification effect of the air conditioner.

[0099] Optionally, the indoor heat exchange section also includes a drip tray, located below the steam outlet of the heating module. This design allows condensate generated at the heating module to accumulate in the drip tray, preventing direct dripping and potential safety hazards.

[0100] Please see Figure 3 Furthermore, this invention also proposes a humidification method for a heat exchange system 100. The specific structure of the heat exchange system 100 is as described in the above embodiments. Since the humidification method of this heat exchange system 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0101] The humidification method of the heat exchange system 100 includes the following steps:

[0102] S10. Control the humidification pipeline 20 to be turned on, and obtain the first liquid temperature of the humidification water at the inlet end of the return section 22.

[0103] This configuration allows for real-time monitoring of the liquid temperature of the humidifying water flowing from the heat exchanger 21 to the heating section. This portion of the humidifying water is preheated; by monitoring it, it can be determined whether this portion of the humidifying water meets the preset temperature requirements.

[0104] S20. Based on the relationship between the first liquid temperature and the preset temperature range, control the liquid flow rate upstream of the heat exchange section 21 and the liquid flow rate of the return section 22 respectively.

[0105] In one embodiment of the present invention, the humidification pipeline 20 includes a liquid inlet section 25, a heat exchange section 21 and a vaporization section 23 connected in sequence. The two ends of the return section 22 are connected to the inlet end and the outlet end of the heat exchange section 21, respectively, so as to divert humidification water from the heat exchange section 21 and the vaporization section 23 and return the humidification water to the upstream of the heat exchange section 21.

[0106] Optionally, a first control pump 221 is provided on the reflux section 22, and a third control pump 251 is provided on the liquid inlet section 25. By correspondingly switching the opening and closing states of the first control pump 221 and the third control pump 251, the conduction or isolation of the reflux section 22 and the liquid inlet section 25 upstream of the heat exchange section 21 can be controlled accordingly. With this configuration, the liquid flow rate upstream of the heat exchange section 21 and the liquid flow rate of the reflux section 22 can be controlled according to the liquid temperature of the humidifying water at the inlet end of the reflux section 22, thereby controlling the liquid flow rate at the heat exchange section 21 and thus controlling the humidification effect of the refrigerant circulation pipeline 10 on the humidifying water at the heat exchange section 21. This enables dynamic control of the first liquid temperature, which can better ensure the normal operation and humidification effect of the humidification pipeline 20.

[0107] In practical applications, when the temperature of the first liquid is less than the minimum critical value of the preset temperature range, the upstream liquid inlet 25 of the heat exchange section 21 is controlled to be turned on so as to continuously supply water to the heat exchange section 21 through the liquid inlet 25; at the same time, the return section 22 is controlled to be turned on so that at least part of the humidifying water can circulate between the return section 22 and the heat exchange section 21, so that it can flow through the heat exchange section 21 multiple times and exchange heat with the refrigerant circulation pipeline 10, so that the temperature of the first liquid after the humidifying water is preheated can continue to rise.

[0108] In practical applications, when the temperature of the first liquid is within the preset temperature range, the upstream liquid inlet 25 of the heat exchange section 21 is turned on to continuously supply water to the heat exchange section 21 through the liquid inlet 25. At this time, the return section 22 can be turned off to prevent the temperature of the first liquid after the humidification water has been preheated from rising further and exceeding the preset temperature range.

[0109] In practical applications, when the temperature of the first liquid is greater than or equal to the maximum critical value of the preset temperature range, the heat exchange section 21 and the return section 22 are both isolated. This stops the heating process of the humidifying water, thereby reducing the risk of overheating of the humidifying water and damaging the humidifying pipeline 20.

[0110] In another embodiment of the present invention, the preset temperature range includes a first temperature range and a second temperature range, wherein the maximum critical value of the first temperature range is equal to the minimum critical value of the second temperature range; the step of "controlling the liquid flow rate of the liquid inlet 25 and the heat exchange section 21 of the heat exchange system 100 according to the relationship between the first liquid temperature and the preset temperature range" includes:

[0111] When the temperature of the first liquid is less than the minimum critical value of the first temperature range, the upstream of the heat exchange section 21 and the return section 22 are kept continuously connected. With this configuration, when the temperature of the first liquid is less than the minimum critical value of the first temperature range, it means that the liquid temperature at the inlet of the return section 22 is too low. If this portion of the humidifying water enters the vaporization section 23, the heating module of the vaporization section 23 needs to operate at a higher power to reheat and vaporize the humidifying water to achieve the humidification function of the humidification pipeline 20. At this time, the first control pump 221 and the third control pump 251 are turned on, which allows the return section 22 and the liquid inlet section 25 located upstream of the heat exchange section 21 to be connected. At least a portion of the humidifying water can circulate between the heat exchange section 21 and the return section 22, exchanging heat with the refrigerant circulation pipeline 10 multiple times. This improves the preheating effect of the humidifying water and helps to shorten the vaporization time required for the humidifying water at the heating module of the vaporization section 23.

[0112] When the temperature of the first liquid is greater than or equal to the minimum critical value of the first temperature range and less than the maximum critical value of the first temperature range, the upstream of the heat exchange section 21 is intermittently opened and the return section 22 is shut off. With this configuration, when the temperature of the first liquid is greater than or equal to the minimum critical value of the first temperature range and less than the maximum critical value of the first temperature range, it means that the liquid temperature of the humidifying water at the inlet of the return section 22 is already within the set first temperature range and close to the maximum critical value of the set first temperature range. The vaporization section 23 of the heating pipe can then operate at a lower power setting to complete the secondary heating and vaporization of the humidifying water, achieving energy savings. At this time, intermittently opening the upstream of the heat exchange section 21 provides a basic amount of humidifying water for humidification; simultaneously, shutting off the return section 22 prevents the humidifying water from continuing to heat up and damaging the components on the humidification pipe 20.

[0113] When the temperature of the first liquid is greater than or equal to the minimum critical value of the second temperature range and less than the maximum critical value of the second temperature range, the upstream of the heat exchange section 21 is kept open and the return section 22 is shut off. This configuration means that when the temperature of the first liquid is greater than or equal to the minimum critical value of the second temperature range and less than the maximum critical value of the second temperature range, it indicates that the liquid temperature of the humidifying water at the inlet of the return section 22 is already within the set second temperature range and is close to the maximum critical value of the set second temperature range. If the humidifying water is further heated, there is a risk of overheating and damaging the components on the humidification pipeline 20. In this case, keeping the upstream of the heat exchange section 21 open increases the liquid flow rate of the heat exchange section 21, thus slowing down the heat exchange efficiency of the humidifying water to some extent; simultaneously, shutting off the return section 22 prevents the humidifying water from repeatedly exchanging heat with the refrigerant circulation system and continuing to heat up, thereby reducing the risk of the humidifying water damaging the components on the humidification pipeline 20 due to overheating.

[0114] When the first liquid temperature exceeds the maximum critical value of the second temperature range, both the upstream and reflux sections 22 of the control heat exchange section 21 are disconnected. This configuration means that when the liquid temperature is greater than or equal to the maximum critical value of the second temperature range, the liquid temperature at the inlet of the reflux section 22 is too high, posing a risk of damage to components such as the heating module in the humidification pipeline 20. Disconnecting both the upstream and reflux sections 22 at this time isolates the humidification pipeline 20, resulting in zero liquid flow in the heat exchange section 21. This prevents the humidification water from continuing to exchange heat with the refrigerant circulation pipeline 10 through the heat exchange section 21, thus extending the service life of the humidification pipeline 20.

[0115] In one embodiment of the present invention, a minimum critical value of T1 is defined for a preset temperature range, and a maximum critical value of T2 is defined for the preset temperature range. The first temperature range is a low temperature range, and its minimum critical value can be T1, and its maximum critical value can be T3, where T3 satisfies: T3 = T2 - 10℃; the second temperature range is a high temperature range, and its minimum critical value can be T3, and its maximum critical value can be T2.

[0116] As some examples, T1 can specifically be 30°C. By controlling the minimum liquid temperature of the humidifying water to be equal to or close to 30°C, the temperature of the humidifying water after preheating can be avoided from being too low, which would increase the power requirement of the heating module of the vaporization section 2322.

[0117] As examples, T3 satisfies: 70℃ ≤ T2 ≤ 80℃. By controlling the maximum liquid temperature of the humidifying water between 70℃ and 80℃, the risk of damage to the components of the humidifying pipeline 2020 due to excessively high preheated humidifying water temperature can be avoided. Specifically, the maximum critical value T2 within the preset temperature range can be 70℃, 72℃, 74℃, 76℃, 78℃, 80℃, etc.

[0118] Please see Figure 4 In another embodiment of the present invention, after the step of "controlling the liquid flow rate upstream of the heat exchange section 21 and the liquid flow rate of the return section 22 according to the relationship between the first liquid temperature and the preset temperature range", the method includes:

[0119] S30. Obtain the second liquid temperature at the inlet end of the humidification water in the vaporization section 23.

[0120] This configuration allows for real-time monitoring of the liquid temperature of the humidifying water entering the heating section. This portion of the humidifying water is used for secondary heating and vaporization. By monitoring it, it can be determined whether this portion of the humidifying water meets the preset temperature requirements, thus preventing the humidifying water temperature from being too low, which would increase the vaporization time required for the humidifying water at the heating module of the vaporization section 23.

[0121] S40. Control the opening or closing of the vaporization section 23 according to the relationship between the second liquid temperature and the preset temperature threshold.

[0122] This configuration allows for control of the liquid flow rate in the humidification pipeline 20 based on the liquid temperature of the humidification water at the inlet of the vaporization section 23. This can be achieved by increasing the liquid flow rate when the humidification water temperature is too high, thus reducing the heating efficiency and preventing damage to components in the humidification pipeline 20 due to excessively high water temperature; conversely, by reducing the liquid flow rate when the humidification water temperature is too low, thereby improving the heating efficiency and ensuring proper preheating. This dynamic control of the liquid temperature in the humidification pipeline 20 better guarantees its normal operation and humidification effect.

[0123] In one embodiment of the present invention, the working modes of the air conditioner include manual humidification mode, automatic humidification mode, etc., and the heat exchange system 100 can control the humidification pipeline 20 to be opened or closed according to the corresponding working mode.

[0124] In manual humidification mode, the steps for "controlling the humidification pipe 20 to be turned on" include:

[0125] When the second control pump 231 and the third control pump 251 are turned on, the liquid inlet 25, heat exchange section 21 and vaporization section 23 of the humidification pipeline 20 are connected in sequence. The humidification water flows through the heat exchange section 21 and the vaporization section 23 in sequence, so that the humidification water is preheated and then reheated through the heat exchange section 21 and the vaporization section 23.

[0126] Optionally, when the second control pump 231 and the third control pump 251 are turned on, the first control pump 221 can also be turned on. At this time, a portion of the humidifying water in the humidifying pipeline 20 flows sequentially through the liquid inlet 25, the heat exchange section 21 and the vaporization section 23, and is heated and vaporized at the heating module of the vaporization section 23. The other portion of the humidifying water circulates between the circulation loop of the heat exchange section 21 and the return section 22 connecting assembly, so as to exchange heat with the refrigerant circulation pipeline 10 multiple times.

[0127] In automatic humidification mode, the steps for "controlling the humidification pipe 20 to be turned on" include:

[0128] The preset humidity range is determined based on the preset humidity, and the ambient humidity of the indoor environment is obtained at preset intervals.

[0129] As some examples, the preset humidity is defined as X, the minimum threshold value of the preset humidity range is X1, and the maximum threshold value of the preset temperature range is X2, satisfying: X1 = X - 5%, X2 = X + 5%.

[0130] When the ambient humidity of the indoor environment is less than the minimum critical value of the preset humidity range, the second control pump 231 and the third control pump 251 are turned on. At this time, the liquid inlet 25, heat exchange section 21 and vaporization section 23 of the humidification pipeline 20 are connected in sequence. The humidification water flows through the heat exchange section 21 and vaporization section 23 in sequence, so as to preheat and reheat the humidification water through the heat exchange section 21 and vaporization section 23.

[0131] When the ambient humidity of the indoor environment is greater than or equal to the minimum critical value of the preset humidity range, the second control pump 231 on the humidification pipeline 20 is turned off. At this time, the vaporization section 23 is disconnected, and the heat exchange system 100 stops outputting moisture to the indoor environment.

[0132] Optionally, with the second control pump 231 off, the first control pump 221 and / or the third control pump 251 can also be turned on. When the first control pump 221 is turned on, at least a portion of the humidifying water in the humidification pipeline 20 can circulate between the circulation loop of the heat exchange section 21 and the return section 22 connection assembly to exchange heat with the refrigerant circulation pipeline 10 multiple times. When the third control pump 251 is turned on, the humidification pipeline 20 can continue to supply humidifying water to the heat exchange section 21 through the liquid inlet section 25. This portion of humidifying water can be stored in a reservoir located between the heat exchange section 21 and the vaporization section 23, or it can circulate between the reservoir, the return section 22, and the heat exchange section 21.

[0133] With this setting, the heat exchange system 100 can be controlled to perform corresponding humidity adjustment operations in the automatic humidification mode, so that the indoor humidity can be kept within the preset humidity range, thereby avoiding excessively high or low air humidity, which could cause discomfort to users.

[0134] Please see Figure 5 In another embodiment of the present invention, the step of "controlling the liquid flow rate of the humidification pipeline 20 according to the relationship between the liquid temperature and the preset temperature range" includes:

[0135] S50. When the liquid temperature is greater than or equal to the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve of the refrigerant circulation pipeline 10 is controlled to be the preset opening degree.

[0136] This setting allows the refrigerant circulation pipe 10 to have a preset exhaust temperature Tp, at which point the temperature of the refrigerant used for heat exchange with the humidification pipe 20 in the refrigerant circulation pipe 10 meets the target requirements.

[0137] As some examples, the refrigerant circulation line 10 has a preset exhaust temperature Tp that satisfies: Tp≤105℃, and the preset exhaust temperature Tp can be 95℃, 97℃, 99℃, 101℃, 103℃, 105℃, etc.

[0138] S60. When the liquid temperature is less than the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve is reduced compared to the preset opening degree.

[0139] With this setting, when the liquid temperature is less than the minimum critical value of the preset temperature range, the exhaust temperature Tp of the refrigerant circulation pipe 10 can be increased by reducing the opening of the electronic valve. At this time, the temperature of the refrigerant used for heat exchange with the humidification pipe 20 in the refrigerant circulation pipe 10 will increase accordingly, which is beneficial to improving the preheating effect of the refrigerant circulation pipe 10 on the humidification water.

[0140] As some examples, when the electronic expansion valve decreases compared to the preset opening, the maximum increase in the exhaust temperature Tp of the refrigerant circulation line 10 is defined as Tx, and the maximum increase in temperature Tx satisfies: Tp = 10℃.

[0141] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat exchange system applied to an air conditioner, characterized in that, include: Refrigerant circulation piping is used for refrigerant circulation; and A humidification pipeline for the flow of humidification water, the humidification pipeline including a heat exchange section and a vaporization section arranged sequentially along the flow direction of the humidification water, the heat exchange section being at least partially heat-exchange connected to the refrigerant circulation pipeline for preheating the humidification water, and the vaporization section being used for secondary heating of the humidification water to heat and vaporize the humidification water; The humidification pipeline also includes a return section, which is used to divert the preheated humidification water downstream of the heat exchange section so that at least a portion of the humidification water flows back to the upstream of the heat exchange section.

2. The heat exchange system as described in claim 1, characterized in that, The humidification pipeline also includes a liquid storage section, which includes an inlet and a first outlet. The inlet and the first outlet are respectively connected to the outlet end of the heat exchange section and the inlet end of the vaporization section. The liquid storage section is used to store the preheated humidification water. The liquid storage section further includes a second liquid outlet, the inlet end of the reflux section is connected to the second liquid outlet, and the outlet end of the reflux section is connected to the liquid inlet of the heat exchange section.

3. The heat exchange system as described in claim 2, characterized in that, The liquid storage unit also includes a temperature detection mechanism for detecting the temperature of the humidifying water stored in the liquid storage unit; And / or, the liquid storage unit further includes a first water level detection mechanism for detecting the water level of the humidifying water stored in the liquid storage unit.

4. The heat exchange system as described in any one of claims 1 to 3, characterized in that, The reflux section includes a first control pump, which is configurable to open and close, and is used to control the conduction or interruption of the reflux section.

5. The heat exchange system as described in any one of claims 1 to 3, characterized in that, The vaporization section includes a second control pump, which is operable to control the opening or closing of the vaporization section.

6. An air conditioner, characterized in that, The heat exchange system includes any one of claims 1 to 5, the heat exchange system comprising an indoor heat exchange section and an outdoor heat exchange section, wherein the vaporization section of the heat exchange system is disposed in the indoor heat exchange section.

7. A humidification method for a heat exchange system, characterized in that, The steps of the humidification method include: Control the humidification pipeline to open, and obtain the first liquid temperature of the humidification water at the inlet end of the reflux section; Based on the relationship between the first liquid temperature and the preset temperature range, the liquid flow rate upstream of the heat exchange section and the liquid flow rate of the return section are controlled respectively.

8. The humidification method as described in claim 7, characterized in that, The preset temperature range includes a first temperature range and a second temperature range, wherein the maximum critical value of the first temperature range is equal to the minimum critical value of the second temperature range; the step of "controlling the liquid flow rate of the inlet section and the heat exchange section of the heat exchange system according to the relationship between the first liquid temperature and the preset temperature range" includes: When the temperature of the first liquid is less than the minimum critical value of the first temperature range, the upstream of the heat exchange section and the reflux section are kept connected. When the temperature of the first liquid is greater than or equal to the minimum critical value of the first temperature range, but less than the maximum critical value of the first temperature range, the upstream of the heat exchange section is intermittently connected and the reflux section is disconnected. When the temperature of the first liquid is greater than or equal to the minimum critical value of the second temperature range and less than the maximum critical value of the second temperature range, the upstream of the heat exchange section is controlled to remain open and the reflux section is cut off. When the temperature of the first liquid is greater than the maximum critical value of the second temperature range, the upstream of the heat exchange section and the reflux section are both disconnected.

9. The humidification method as described in claim 7, characterized in that, Following the step of "controlling the liquid flow rate upstream of the heat exchange section and the liquid flow rate of the return section according to the relationship between the first liquid temperature and the preset temperature range", the following is included: The second liquid temperature of the humidifying water at the inlet end of the vaporization section is obtained; The opening or closing of the vaporization section is controlled according to the relationship between the second liquid temperature and the preset temperature threshold.

10. The humidification method as described in claim 7, characterized in that, The step of "controlling the liquid flow rate of the inlet and reflux sections of the heat exchange system according to the relationship between the first liquid temperature and the preset temperature range" includes: When the temperature of the first liquid is greater than or equal to the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve of the refrigerant circulation pipeline is controlled to be the preset opening degree. When the temperature of the first liquid is less than the minimum critical value of the preset temperature range, the opening degree of the electronic expansion valve is reduced compared to the preset opening degree.

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