Indoor unit and air treatment equipment

Abstract

The utility model discloses an indoor unit and air handling equipment, the indoor unit comprises a shell, a first indoor heat exchanger, a second indoor heat exchanger, a first throttling element and an air guide part, the shell is provided with an air inlet, an air outlet and an air passing hole in a penetrating mode; the first indoor heat exchanger and the second indoor heat exchanger are arranged on the refrigerant flow path in parallel and arranged in the shell at intervals. The first throttling element is arranged on a refrigerant branch where the first indoor heat exchanger is located and used for controlling the flow of a refrigerant flowing through the first indoor heat exchanger. The air guide part is movably installed on the shell, the air guide part is provided with a first position and a second position in the moving stroke of the air guide part, the air guide part is switched between the first position and the second position, the opening degree of the first throttling element is controlled, and the air guide part can be switched between the first position and the second position for various situations of high temperature and low humidity, high temperature and high humidity and low temperature and high humidity. The problems of excessive dehumidification, small-amplitude cooling, large-amplitude dehumidification and large-amplitude dehumidification cooling can be well solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to an indoor unit and an air handling device. Background Art

[0002] For a split air conditioner, dehumidification is carried out simultaneously while cooling. In the case of low humidity in summer, excessive dehumidification will occur. In the plum rain season and the period of dampness returning to the south, for situations such as isothermal dehumidification, small temperature reduction but large dehumidification, and large dehumidification with temperature reduction, the effect will not be ideal. The current three-pipe air conditioning system uses reheating dehumidification to achieve dehumidification without temperature reduction, which can meet the demand for isothermal dehumidification in the plum rain season and the period of dampness returning to the south. However, its application scenarios are relatively single, and it cannot solve problems such as excessive dehumidification, small temperature reduction with large dehumidification, and large dehumidification with temperature reduction. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose an indoor unit and an air handling device, aiming to solve the problems that the existing air conditioning system has single application scenarios and cannot solve the problems of excessive dehumidification, small temperature reduction with large dehumidification, and large dehumidification with temperature reduction.

[0004] To achieve the above purpose, an indoor unit proposed by the utility model includes:

[0005] A housing, which is provided with an air inlet, an air outlet, and air passing holes;

[0006] A first indoor heat exchanger and a second indoor heat exchanger, which are arranged in parallel on the refrigerant flow path and are spaced apart in the housing;

[0007] A first throttling member, which is arranged on the refrigerant branch where the first indoor heat exchanger is located and is used to control the refrigerant flow rate through the first indoor heat exchanger; and

[0008] A wind guiding part, which is movably installed on the housing. The wind guiding part has a first position and a second position in its movement stroke. In the first position, the wind guiding part covers the air passing holes, and the first indoor heat exchanger and the second indoor heat exchanger are spaced apart in the direction from the air inlet to the air outlet. In the second position, the wind guiding part opens the air passing holes and moves into the housing, and divides the air passing holes into two air passing openings. The wind guiding part divides the housing into an independently arranged first heat exchange channel and a second heat exchange channel. The first heat exchange channel communicates with the air inlet and one of the air passing openings, and the second heat exchange channel communicates with the air outlet and the other air passing opening. The first indoor heat exchanger is located in the first heat exchange channel, and the second indoor heat exchanger is located in the second heat exchange channel.

[0009] Optionally, the middle part of the air guiding part is rotatably installed at the air passing hole, so that when the air guiding part rotates to the first position, it covers the air passing hole, and when the air guiding part rotates to the second position, one end of it abuts against the inner wall of the housing, and the other end extends outwards from the air passing hole.

[0010] Optionally, the air passing hole is located between the first indoor heat exchanger and the second indoor heat exchanger.

[0011] Optionally, the indoor unit further includes a blowing fan disposed in the housing, and the blowing fan is located between the air passing hole and the second indoor heat exchanger; or, the blowing fan is located between the second indoor heat exchanger and the air outlet.

[0012] Optionally, the indoor unit further includes an exhaust fan disposed in the housing, and the exhaust fan is located between the first indoor heat exchanger and the air inlet; or, the exhaust fan is located between the first indoor heat exchanger and the air passing hole to discharge the air in the indoor unit from the air inlet.

[0013] Optionally, the indoor unit further includes a second throttling member, and the second throttling member is disposed on the refrigerant branch where the first indoor heat exchanger is located and is used to control the refrigerant flow rate flowing through the second indoor heat exchanger.

[0014] The present invention also provides an air treatment device, including an indoor unit, and the indoor unit includes:

[0015] A housing, on which an air inlet, an air outlet, and an air passing hole are penetrated;

[0016] A first indoor heat exchanger and a second indoor heat exchanger, which are arranged in parallel on the refrigerant flow path and are spaced apart and disposed in the housing;

[0017] A first throttling member, which is disposed on the refrigerant branch where the first indoor heat exchanger is located and is used to control the refrigerant flow rate flowing through the first indoor heat exchanger; and,

[0018] The air guiding part is movably installed on the housing. The air guiding part has a first position and a second position during its movement stroke. In the first position, the air guiding part covers the air passing hole. The first indoor heat exchanger and the second indoor heat exchanger are arranged at intervals in the direction extending from the air inlet to the air outlet. In the second position, the air guiding part moves to the inside of the housing to open the air passing hole and divides the air passing hole into two air passing openings. The air guiding part divides the inside of the housing into an independently arranged first heat exchange channel and a second heat exchange channel. The first heat exchange channel communicates with the air inlet and one of the air passing openings, and the second heat exchange channel communicates with the air outlet and the other air passing opening. The first indoor heat exchanger is located in the first heat exchange channel, and the second indoor heat exchanger is located in the second heat exchange channel.

[0019] Optionally, the air treatment device further includes an outdoor unit. The outdoor unit includes a compressor, a first reversing valve, a second reversing valve, and an outdoor heat exchanger. The compressor includes an exhaust port, a first suction port, and a second suction port. The first reversing valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The second reversing valve includes a fifth valve port, a sixth valve port, a seventh valve port, and an eighth valve port. The first valve port and the fifth valve port are both communicated with the exhaust port. The second valve port is communicated with the first suction port. The third valve port is communicated with the first indoor heat exchanger. The fourth valve port and the eighth valve port are both communicated with the outdoor heat exchanger. The sixth valve port is communicated with the second suction port. The seventh valve port is communicated with the second indoor heat exchanger. The first indoor heat exchanger and the second indoor heat exchanger are both communicated with the outdoor heat exchanger.

[0020] Optionally, the first throttling member includes an electronic expansion valve arranged between the outdoor heat exchanger and the first indoor heat exchanger.

[0021] Optionally, the air treatment device further includes a humidity detection device, a temperature monitoring device, and a control device. The control device is electrically connected to the humidity detection device, the temperature monitoring device, the first throttling member, and the air guiding part, and is used to control the operation of the first throttling member and / or the air guiding part according to the humidity detection device and the temperature monitoring device.

[0022] In the technical solution provided by the present utility model, the first indoor heat exchanger and the second indoor heat exchanger are arranged at intervals in the housing. In the case of a high-temperature and low-humidity environment, the air guiding part can be covered on the air passing hole, and the opening degree of the first throttling part is adjusted so that the evaporation temperature of the first indoor heat exchanger is greater than that of the second indoor heat exchanger. Indoor air can flow from the air inlet to the first indoor heat exchanger for cooling, and then pass through the second indoor heat exchanger for secondary cooling and dehumidification, achieving cooling while avoiding excessive dehumidification. In the case of a high-temperature and high-humidity environment, the air guiding part can be covered on the air passing hole, and the opening degree of the first throttling part is adjusted so that the evaporation temperature of the first indoor heat exchanger is less than that of the second indoor heat exchanger. Indoor air can flow from the air inlet to the first indoor heat exchanger for primary cooling and primary dehumidification, and then pass through the second indoor heat exchanger for secondary cooling and secondary dehumidification, achieving substantial cooling and dehumidification. In the case of a low-temperature and high-humidity environment, the air guiding part can be opened to expose the air passing hole to form two independently arranged first heat exchange channels and second heat exchange channels in the housing. The opening degree of the first throttling part is adjusted so that the evaporation temperature of the first indoor heat exchanger is less than that of the second indoor heat exchanger. The first indoor heat exchanger dehumidifies the indoor air, and the second indoor heat exchanger slightly cools the indoor air at a relatively high temperature, achieving isothermal dehumidification. By switching the air guiding part between the first position and the second position and controlling the opening degree of the first throttling part, for various situations of high-temperature and low-humidity, high-temperature and high-humidity, and low-temperature and high-humidity, the problems of excessive dehumidification, small cooling and large dehumidification, and substantial dehumidification and cooling can be well solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 Schematic diagram of an embodiment of the air handling device provided by the present utility model;

[0025] Figure 2 is Figure 1 Schematic diagram of the air guiding part in the indoor unit in the first position in;

[0026] Figure 3 is Figure 1 Schematic diagram of the air guiding part in the indoor unit in the second position in.

[0027] Description of the reference numerals in the drawings:

[0028]

[0029]

[0030] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0034] The split air conditioner will dehumidify synchronously while cooling. In the case of low humidity in summer, it will dehumidify excessively. For the plum rain season and the period of humid weather after a cold spell, situations such as isothermal dehumidification, slight cooling but significant dehumidification, and significant dehumidification and cooling will not be ideal. The current three-pipe air conditioning system uses reheat dehumidification to achieve dehumidification without cooling, which can meet the demand for isothermal dehumidification in the plum rain season and the period of humid weather after a cold spell. However, its application scenarios are still relatively single and cannot solve problems such as excessive dehumidification, slight cooling and significant dehumidification, and significant dehumidification and cooling.

[0035] To solve the above problems, the present utility model provides an indoor unit, Figure 1 which is a schematic diagram of an embodiment of the air handling device provided by the present utility model; Figure 2 is Figure 1 a schematic diagram of the air guiding part in the indoor unit in FIG. in the first position; Figure 3 is Figure 1 a schematic diagram of the air guiding part in the indoor unit in FIG. in the second position.

[0036] Please refer to Figures 1 to 3 , the indoor unit 10 includes a housing 1, a first indoor heat exchanger 2, a second indoor heat exchanger 3, a first throttling member 4, and an air guiding part 5. The housing 1 is provided with an air inlet a, an air outlet b, and an air passing hole c; the first indoor heat exchanger 2 and the second indoor heat exchanger 3 are arranged at intervals in the housing 1; the first throttling member 4 is arranged on the refrigerant branch path where the first indoor heat exchanger 2 is located to control the refrigerant flow rate flowing through the first indoor heat exchanger 2; the air guiding part 5 is movably installed on the housing 1, and the air guiding part 5 has a first position and a second position in its moving stroke. In the first position, the air guiding part 5 covers the air passing hole c, and the first indoor heat exchanger 2 and the second indoor heat exchanger 3 are arranged at intervals in the direction extending from the air inlet a to the air outlet b. In the second position, the air guiding part 5 opens the air passing hole c and moves into the housing 1, and divides the air passing hole c into two air passing openings. The air guiding part 5 divides the housing 1 into an independently arranged first heat exchange channel A1 and a second heat exchange channel A2. The first heat exchange channel A1 communicates with the air inlet a and one of the air passing openings, and the second heat exchange channel A2 communicates with the air outlet b and the other air passing opening. The first indoor heat exchanger 2 is located in the first heat exchange channel A1, and the second indoor heat exchanger 3 is located in the second heat exchange channel A2.

[0037] It should be noted that the first throttling member 4 is used to control the refrigerant flow rate through the first indoor heat exchanger 2. When the opening degree of the first throttling member 4 is relatively large, the refrigerant flow rate is relatively large, the boiling point of the refrigerant is relatively high, and relatively speaking, the evaporation temperature of the first indoor heat exchanger 2 is relatively high; conversely, when the opening degree of the first throttling member 4 is relatively small, the evaporation temperature of the first indoor heat exchanger 2 is relatively low, which is more conducive to dehumidification.

[0038] It can be understood that in ordinary summer, the air is relatively dry, so the cooling demand is much greater than the dehumidification demand. At this time, cooling should be achieved while avoiding excessive dehumidification to ensure comfort and energy conservation. In hot and humid weather such as "typhoon days" and "sauna days" in summer, people feel stuffy and hot. At this time, the air conditioner needs to cool down and dehumidify significantly to create a comfortable and cool environment for people. For weather such as "returning south days" in spring, the environmental temperature is relatively low and the humidity is relatively high. At this time, the air conditioner needs to cool down slightly and dehumidify significantly.

[0039] In the technical solution provided by the present utility model, the first indoor heat exchanger 2 and the second indoor heat exchanger 3 are arranged in parallel on the refrigerant flow path and are spaced apart in the housing 1. In the case of a high-temperature and low-humidity environment, the air guiding part 5 can be covered on the air passing hole c, and the opening degree of the first throttling part 4 is adjusted so that the evaporation temperature of the first indoor heat exchanger 2 is higher than the evaporation temperature of the second indoor heat exchanger 3. Indoor air can flow from the air inlet a to the first indoor heat exchanger 2 for cooling, and then pass through the second indoor heat exchanger 3 for secondary cooling and dehumidification, achieving cooling while avoiding excessive dehumidification. In the case of a high-temperature and high-humidity environment, the air guiding part 5 can be covered on the air passing hole c, and the opening degree of the first throttling part 4 is adjusted so that the evaporation temperature of the first indoor heat exchanger 2 is lower than the evaporation temperature of the second indoor heat exchanger 3. Indoor air can flow from the air inlet a to the first indoor heat exchanger 2 for primary cooling and primary dehumidification, and then pass through the second indoor heat exchanger 3 for secondary cooling and secondary dehumidification, achieving significant cooling and dehumidification. In the case of a low-temperature and high-humidity environment, the air guiding part 5 can open the air passing hole c to form two independently arranged first heat exchange channels A1 and second heat exchange channels A2 in the housing 1. The opening degree of the first throttling part 4 is adjusted so that the evaporation temperature of the first indoor heat exchanger 2 is lower than the evaporation temperature of the second indoor heat exchanger 3. The first indoor heat exchanger 2 dehumidifies the indoor air, and the second indoor heat exchanger 3 slightly cools the indoor air at a relatively high temperature, achieving isothermal dehumidification. By switching the air guiding part 5 between the first position and the second position and controlling the opening degree of the first throttling part 4, in the case of various situations such as high-temperature and low-humidity, high-temperature and high-humidity, and low-temperature and high-humidity, the problems of excessive dehumidification, small cooling and large dehumidification, and large dehumidification and cooling can be well solved.

[0040] Specifically, in this embodiment, the middle part of the air guiding part 5 is rotatably installed at the air passing hole c. When the air guiding part 5 rotates to the first position, it covers the air passing hole c. When the air guiding part 5 rotates to the second position, one end of it abuts against the inner wall of the housing 1, and the other end extends outwards from the air passing hole c. In this way, the rotating shaft of the air guiding part 5 is directly installed at the periphery of the air passing hole c. Through the rotation of the air guiding part 5, the switching between the two working positions can be realized, and the structure is simple.

[0041] Preferably, the air guiding part 5 has a first air guiding plate part and a second air guiding plate part disposed on both sides of its rotation axis. The first air guiding plate part corresponds to the air passing opening corresponding to the first indoor heat exchanger 2, and the second air guiding plate part corresponds to the air passing opening corresponding to the second indoor heat exchanger 3. The length of the second air guiding plate part can be set to match the height of the housing 1. When the air guiding part 5 rotates 90°, the end of the second air guiding plate part just abuts against the inner wall of the housing 1.

[0042] Specifically, in this embodiment, the air passing hole c is located between the first indoor heat exchanger 2 and the second indoor heat exchanger 3. With such a setting, when the air guiding part 5 rotates to the second position, the two air passing openings formed by the air guiding part 5 separating the air passing hole c are located between the first indoor heat exchanger 2 and the second indoor heat exchanger 3. Then, the paths of the first heat exchange channel A1 and the second heat exchange channel A2 formed in the housing 1 are simple and short, enabling the indoor air to participate in the heat exchange with the indoor heat exchanger as soon as possible, and the heat exchange efficiency is high.

[0043] Further, in one embodiment, the air handling device 100 further includes a supply air fan 6 disposed in the housing 1. The supply air fan 6 is located between the air passing hole c and the second indoor heat exchanger 3. The supply air fan 6 blows the indoor air through the second indoor heat exchanger 3, which helps to increase the contact between the air and the surface of the second indoor heat exchanger 3, promotes more efficient heat exchange, improves the operating efficiency of the heat exchange system, reduces energy consumption, and at the same time ensures that the indoor air is fully circulated and cooled. At the same time, the supply air fan 6 can help to evenly blow the cooled air to each corner of the room to ensure that the entire indoor space can receive a uniform cooling effect.

[0044] In another embodiment, the supply air fan 6 is located between the second indoor heat exchanger 3 and the air outlet b. With such a setting, the supply air fan 6 also accelerates the flow rate of the indoor air through the first indoor heat exchanger 3, which helps to increase the contact between the air and the surface of the first indoor heat exchanger 3 and promotes more efficient heat exchange.

[0045] Further, in one embodiment, the indoor unit 10 further includes an exhaust air fan disposed in the housing 1. The exhaust air fan is located between the first indoor heat exchanger 2 and the air inlet a.

[0046] In another embodiment, the exhaust air fan is located between the first indoor heat exchanger 2 and the air passing hole c to discharge the air in the indoor unit 10 from the air inlet a.

[0047] By setting the exhaust fan, it is possible to make the indoor air pass through the first indoor heat exchanger 2, which helps to increase the contact between the air and the surface of the first indoor heat exchanger 2, promotes more efficient heat exchange, improves the operating efficiency of the heat exchange system, and reduces energy consumption.

[0048] Furthermore, in this embodiment, the air supply end of the air supply fan 6 is arranged towards the second indoor heat exchanger 3. In this way, when the air guiding part 5 is in the first position, the air supply fan 6 can quickly make the air cooled or dehumidified by the first indoor heat exchanger 2 flow through the second indoor heat exchanger 3 as soon as possible for further cooling or dehumidifying, providing high-efficient dehumidifying or cooling efficiency.

[0049] Furthermore, in this embodiment, the indoor unit 10 further includes a second throttling member 7. The second throttling member 7 is arranged on the refrigerant branch where the first indoor heat exchanger 2 is located and is used to control the refrigerant flow rate flowing through the second indoor heat exchanger 3. In this way, the flow rate of the refrigerant in the heat exchange system can be controlled and adjusted by the second throttling member 7 to ensure that an appropriate amount of refrigerant enters the second indoor heat exchanger 3.

[0050] Specifically, in this embodiment, the second throttling member 7 includes a throttling tube. The throttling tube is a device for controlling the refrigerant flow towards the second indoor heat exchanger 3. The throttling tube controls the pressure and temperature in the heat exchange system by adjusting the flow rate of the refrigerant to ensure the normal operation of the system and provide an appropriate refrigeration effect. The second throttling member 7 is not limited to the throttling tube, and of course, it can also be arranged in other possible forms, such as an electronic expansion valve, etc., which can be specifically determined according to the actual situation, and this embodiment of the specification does not make a limitation on this.

[0051] The present utility model also provides an air treatment device 100. The air treatment device 100 includes the above-mentioned indoor unit 10. The air treatment device 100 further includes a compressor, an outdoor unit, a reversing valve, etc. Since the air treatment device 100 includes the indoor unit 10, the specific structure of this indoor unit 10 refers to the above-mentioned embodiment. Since the indoor unit 10 of this air treatment device 100 adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.

[0052] Specifically, in this embodiment, the air handling device 100 further includes an outdoor unit 20. The outdoor unit includes a compressor 8, a first reversing valve 9, a second reversing valve 10, and an outdoor heat exchanger 11. The compressor 8 includes an exhaust port 8a, a first suction port 8b, and a second suction port 8c. The first reversing valve 9 includes a first valve port 9a, a second valve port 9b, a third valve port 9c, and a fourth valve port 9d. The second reversing valve 10 includes a fifth valve port 10a, a sixth valve port 10b, a seventh valve port 10c, and an eighth valve port 10d. The first valve port 9a and the fifth valve port 10a are both in communication with the exhaust port 8a. The second valve port 9b is in communication with the first suction port 8b. The third valve port 9c is in communication with the first indoor heat exchanger 2. The fourth valve port 9d and the eighth valve port 10d are both in communication with the outdoor heat exchanger 11. The sixth valve port 10b is in communication with the second suction port 8c. The seventh valve port 10c is in communication with the second indoor heat exchanger 3. The first indoor heat exchanger 2 and the second indoor heat exchanger 3 are both in communication with the outdoor heat exchanger 11.

[0053] Specifically, in this embodiment, the first throttling member 4 includes an electronic expansion valve disposed between the outdoor heat exchanger 11 and the first indoor heat exchanger 2. An electronic expansion valve is a device used to control the refrigerant flow rate in a refrigeration cycle. By precisely controlling the refrigerant flow rate, the electronic expansion valve improves system efficiency, saves energy and reduces emissions, and ensures the stable operation of the system. Correspondingly, in this application, the electronic expansion valve can control the refrigerant flow rate by adjusting its opening degree, so as to adjust the evaporation temperature of the first indoor heat exchanger 2 as needed, and switch between mainly dehumidifying and mainly cooling. The first throttling member 4 is not limited to an electronic expansion valve. Of course, it can also be arranged in other possible forms, such as a mechanical expansion valve, etc., which can be specifically determined according to the actual situation, and this embodiment of the specification does not make any limitations in this regard.

[0054] Specifically, in this embodiment, the air handling device 100 further includes a humidity detection device, a temperature monitoring device, and a control device. The control device is electrically connected to the humidity detection device, the temperature monitoring device, the first throttling member 4, and the air guiding part 5, and is used to control the operation of the first throttling member 4 and / or the air guiding part 5 according to the humidity detection device and the temperature monitoring device. In this way, the humidity detection device and the temperature detection device can automatically detect the temperature and humidity, so as to be able to control the air handling device 100 to dehumidify and / or cool in real time. For the convenience of understanding, the following situation is taken as an example for illustration:

[0055] For ordinary summer weather when the air is relatively dry, if the temperature detection device detects that the ambient temperature is greater than 30°C and the humidity detected by the humidity detection device is less than 60%, it indicates high temperature and low humidity at this time. Then the cooling demand is much greater than the dehumidification demand. At this time, the air guide part 5 can be controlled to cover the air passing hole c, and the opening degree of the first throttle member 4 is adjusted to be greater than that of the throttle pipe, so that the evaporation temperature of the first indoor heat exchanger 2 is greater than the evaporation temperature of the second indoor heat exchanger 3. The first indoor heat exchanger 2 exchanges heat with hot air at a higher evaporation temperature for cooling, and then undergoes secondary cooling and dehumidification through the second indoor heat exchanger 3, achieving cooling while avoiding excessive dehumidification.

[0056] For high-temperature and high-humidity weather such as "typhoon days" and "sauna days" in summer, people feel stuffy and hot. If the temperature detection device detects that the ambient temperature is greater than 30°C and the humidity detected by the humidity detection device is greater than 70%, it indicates high temperature and high humidity at this time. Then both the cooling demand and the dehumidification demand are large. At this time, the air guide part 5 can be controlled to cover the air passing hole c, and the opening degree of the first throttle member 4 is adjusted to be less than that of the throttle pipe, so that the evaporation temperature of the first indoor heat exchanger 2 is less than the evaporation temperature of the second indoor heat exchanger 3. After the first indoor heat exchanger 2 undergoes primary cooling and primary dehumidification, it then undergoes secondary cooling and secondary dehumidification through the second indoor heat exchanger 3, achieving substantial cooling and dehumidification.

[0057] For weather such as "returning to a humid state" in spring, if the temperature detection device detects that the ambient temperature is less than 27°C and the humidity detected by the humidity detection device is greater than 70%, it indicates low temperature and high humidity at this time. At this time, the air guide part 5 can be controlled to open the air passing hole c, and the opening degree of the first throttle member 4 is adjusted to be less than that of the throttle pipe, so that the evaporation temperature of the first indoor heat exchanger 2 is less than the evaporation temperature of the second indoor heat exchanger 3. The first indoor heat exchanger 2 dehumidifies the indoor air, and the second indoor heat exchanger 3 cools the indoor air slightly at a relatively high temperature, achieving isothermal dehumidification.

[0058] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An indoor unit, characterized in that: include: A shell body, wherein the shell body is provided with an air inlet, an air outlet, and an air hole; A first indoor heat exchanger and a second indoor heat exchanger are arranged in the shell at intervals; A first throttling element is provided on the refrigerant branch where the first indoor heat exchanger is located, and is used to control the refrigerant flow rate flowing through the first indoor heat exchanger; as well as, The air guide part is movably mounted on the shell, and the air guide part has a first position and a second position in its movable stroke. In the first position, the air guide part covers the air hole, and the first indoor heat exchanger and the second indoor heat exchanger are arranged at intervals in the direction extending from the air inlet toward the air outlet. In the second position, the air guide part opens the air hole and moves into the shell, and divides the air hole into two air outlets. The air guide part divides the shell into a first heat exchange channel and a second heat exchange channel that are independently set. The first heat exchange channel connects the air inlet and one of the air outlets, and the second heat exchange channel connects the air outlet and the other air outlet. The first indoor heat exchanger is located in the first heat exchange channel, and the second indoor heat exchanger is located in the second heat exchange channel.

2. The indoor unit according to claim 1, characterized in that: The middle portion of the air guide portion is rotatably mounted at the air hole so that when the air guide portion rotates to the first position, it covers the air hole; when the air guide portion rotates to the second position, one end portion abuts against the inner wall of the shell and the other end portion extends outward from the air hole.

3. The indoor unit according to claim 2, characterized in that: The air hole is located between the first indoor heat exchanger and the second indoor heat exchanger.

4. The indoor unit according to claim 1, characterized in that: The indoor unit further includes an air supply fan disposed in the shell, wherein the air supply fan is located between the air hole and the second indoor heat exchanger; or, the air supply fan is located between the second indoor heat exchanger and the air outlet.

5. The indoor unit according to claim 1, characterized in that: The indoor unit also includes an exhaust fan arranged in the shell, and the exhaust fan is located between the first indoor heat exchanger and the air inlet; or, the exhaust fan is located between the first indoor heat exchanger and the air hole to discharge the air in the indoor unit from the air inlet.

6. The indoor unit according to claim 1, characterized in that: The indoor unit further includes a second throttling element, which is disposed on a refrigerant branch where the first indoor heat exchanger is located and is used to control the refrigerant flow rate flowing through the second indoor heat exchanger.

7. An air treatment device, characterized in that: It comprises the indoor unit as described in any one of claims 1 to 6.

8. The air treatment device according to claim 7, characterized in that The air handling equipment also includes an outdoor unit, which includes a compressor, a first reversing valve, a second reversing valve and an outdoor heat exchanger. The compressor includes an exhaust port, a first air intake port and a second air intake port. The first reversing valve includes a first valve port, a second valve port, a third valve port and a fourth valve port. The second reversing valve includes a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port. The first valve port and the fifth valve port are both connected to the exhaust port, the second valve port is connected to the first air intake port, the third valve port is connected to the first indoor heat exchanger, the fourth valve port and the eighth valve port are both connected to the outdoor heat exchanger, the sixth valve port is connected to the second air intake port, the seventh valve port is connected to the second indoor heat exchanger, and the first indoor heat exchanger and the second indoor heat exchanger are both connected to the outdoor heat exchanger.

9. The air treatment device according to claim 8, characterized in that The first throttling element includes an electronic expansion valve disposed between the outdoor heat exchanger and the first indoor heat exchanger.

10. The air treatment device according to claim 7, characterized in that: The air treatment equipment also includes a humidity detection device, a temperature monitoring device and a control device. The control device is electrically connected to the humidity detection device, the temperature monitoring device, the first throttling device and the air guide part, and is used to control the operation of the first throttling device and / or the air guide part according to the humidity detection device and the temperature monitoring device.

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