Electric control air valve, refrigerant switching device and air conditioning system

Abstract

The utility model discloses an electric control air valve, a refrigerant switching device and an air conditioning system.The electric control air valve is used for being installed in a containing cavity of a shell of the refrigerant switching device and comprises a driving part and an air blocking part; wherein the driving part is used for being connected with the air blocking part to drive the air blocking part to move relative to the air opening in the preset direction so that the air blocking part can be switched between a first state and a second state, in the first state, the air blocking part is used for making contact with the shell to seal the air opening, and in the second state, the air blocking part and the shell are arranged in a spaced mode so that the air opening can be opened. According to the design, the driving piece can drive the air blocking piece to be switched between the first state and the second state so as to regulate and control opening and closing of the air opening, in the first state, the air blocking piece makes contact with the shell so as to seal the air opening, the air tightness of the containing cavity of the shell is good, and normal work of the refrigerant switching device is guaranteed. In addition, the driving piece drives the air blocking piece to be in a direct pushing mode, the opening and closing efficiency of the air blocking piece to the air opening is high, and leaked refrigerants can be conveniently discharged in time.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to an electronically controlled air valve, a refrigerant switching device, and an air conditioning system. Background Technology

[0002] In related technologies, when the refrigerant leak detection module in an air conditioner detects refrigerant leakage from the refrigerant switching device, the vent on the refrigerant switching device's casing must be opened to discharge the refrigerant. After the refrigerant discharge is complete, the vent on the refrigerant switching device is closed to prevent moisture from entering the internal space of the casing and forming condensation on the device. Therefore, a high design requirement is placed on the sealing performance of the vent. Utility Model Content

[0003] This application provides an electrically controlled air valve, a refrigerant switching device, and an air conditioning system, which can solve the problem of poor air vent sealing of the refrigerant switching device housing.

[0004] In a first aspect, embodiments of this application provide an electrically controlled air valve; the electrically controlled air valve is used to be installed in the receiving cavity of the housing of a refrigerant switching device, the electrically controlled air valve includes a driving member and a baffle member, the driving member is used to be fixedly installed in the housing of the refrigerant switching device, and the baffle member is used to be provided corresponding to the air outlet of the housing of the refrigerant switching device; wherein, the driving member is used to connect with the baffle member to drive the baffle member to move relative to the air outlet in a preset direction, so that the baffle member switches between a first state and a second state. In the first state, the baffle member is used to contact the housing to close the air outlet, and in the second state, the baffle member is used to be spaced apart from the housing to open the air outlet.

[0005] In some embodiments, the wind deflector includes a support portion and a first elastic sealing portion, the support portion being connected to the drive component and the first elastic sealing portion being connected to the support portion; in a second state, the first elastic sealing portion is used to abut against the mounting inner wall surface of the housing of the refrigerant switching device to seal the air vent.

[0006] In some embodiments, the electrically controlled air valve includes a mounting bracket, and a drive component is mounted on the mounting bracket and mounted on the housing of the refrigerant switching device through the mounting bracket.

[0007] The mounting bracket has a first mating part, and the windshield has a second mating part. The first mating part and the second mating part cooperate to form a mating unit, and each mating unit is used to guide the windshield to move along a preset direction.

[0008] In some embodiments, the driving member has a driving rod with a central axis extending in a predetermined direction, and a windbreak member is disposed on the driving rod; the number of mating units is multiple sets;

[0009] In a direction perpendicular to the preset direction, the distance from each mating unit to the central axis of the drive rod is equal; and / or,

[0010] Each pair of mating units is arranged symmetrically about the central axis of the drive rod.

[0011] In some embodiments, the mounting bracket includes a main frame for mounting on the housing of the refrigerant switching device, and a first mating part is fixedly mounted on the main frame; one of the first mating part and the second mating part is a rod and the other is a sleeve, the rod extends along a preset direction and the sleeve is fitted around the rod.

[0012] In some embodiments, the first mating part is a sleeve rod, and the second mating part is a sleeve;

[0013] The end of the sleeve is designed to fit snugly against the inner wall of the housing of the refrigerant switching device; or,

[0014] The end of the sleeve is spaced apart from the inner wall of the housing of the refrigerant switching device, and the distance is less than the size of the sleeve in the preset direction.

[0015] In some embodiments, the driving component includes a motor, a coupling, a drive rod, and a nut. The motor is used to be fixedly installed on the housing of the refrigerant switching device. The coupling is connected to the output end of the motor. The drive rod is a screw rod with its central shaft extending in a preset direction and is connected to the coupling. The nut is threaded onto the outer periphery of the screw rod and is connected to the wind deflector so that when the motor starts and drives the coupling to rotate, thereby causing the screw rod to rotate around the central shaft of the screw rod, the wind deflector moves in the preset direction.

[0016] In some embodiments, the wind deflector has a mounting hole, a nut is disposed in the mounting hole and fixedly installed on the wind deflector; a screw passes through the nut, and the end of the screw is used to fit against the inner wall surface of the housing of the refrigerant switching device.

[0017] Secondly, embodiments of this application provide a refrigerant switching device; the refrigerant switching device includes a housing and an electrically controlled air valve, the housing has a receiving cavity and an air outlet communicating with the receiving cavity, and the electrically controlled air valve is located in the receiving cavity and installed in the housing.

[0018] In some embodiments, the air vent includes an air inlet and an air outlet; the air inlet and the air outlet are arranged opposite each other along a preset direction; at least one of the air inlet and the air outlet is provided with an electrically controlled air valve.

[0019] In some embodiments, there are multiple air vents, and in a first state, the baffle is used to contact the housing and close the multiple air vents.

[0020] In some embodiments, the refrigerant switching device further includes at least one exhaust duct, each exhaust duct being installed on the outer surface of the housing corresponding to one of the air outlets and covering the air outlet so that gas enters and exits the receiving cavity through the exhaust duct.

[0021] In some embodiments, the refrigerant switching device includes a fan disposed within the exhaust duct to drive gas within the receiving cavity into and out of the receiving cavity via the exhaust duct; or,

[0022] The exhaust duct includes a docking port for connecting to the fan assembly of the air conditioning system to transmit airflow between the receiving cavity and the fan assembly.

[0023] Thirdly, this application provides an air conditioning system; the air conditioning system includes a refrigerant switching device, a refrigerant leakage detection module, and an electronic control module. The refrigerant leakage detection module is used to detect the refrigerant content in the containment cavity. The electronic control module is signal-connected to the refrigerant leakage detection module and the drive component, and is used to control the drive component to drive the wind deflector to open the air vent when it receives a refrigerant content transmitted by the refrigerant leakage detection module that exceeds a preset content.

[0024] Based on the electro-pneumatic control valve in this embodiment, the opening and closing of the air vent is controlled by a drive component that switches between a first state and a second state. In the first state, the baffle contactes the housing to seal the air vent, ensuring good airtightness of the housing's cavity and preventing moisture from entering or leaving the cavity. This effectively prevents moisture from entering the cavity and forming condensation on the device surface, thus ensuring the normal operation of the refrigerant switching device. Furthermore, the drive component moves the baffle along a preset direction, allowing the baffle to be either fully closed or open over the air vent, rather than gradually changing the obstruction area. This results in a better sealing effect and reduces the risk of poor sealing due to misalignment of the baffle. Additionally, the drive component moves the baffle directly, resulting in high efficiency in opening and closing the air vent and facilitating timely response to refrigerant leaks within the refrigerant switching device, allowing for prompt discharge of the leaked refrigerant. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the electrically controlled air valve in the second state in one embodiment of this application;

[0027] Figure 2 This is a three-dimensional front view of the electrically controlled air valve in a second state according to one embodiment of this application;

[0028] Figure 3This is a three-dimensional structural diagram of the electrically controlled air valve in the second state in one embodiment of this application;

[0029] Figure 4 This is a three-dimensional structural diagram of an electrically controlled air valve having a second elastic sealing portion according to an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the structure of an electrically controlled air valve installed in the housing of a refrigerant switching device in one embodiment of this application.

[0031] Reference numerals: 1. Electrically controlled air valve; 10. Drive component; 11. Motor; 12. Coupling; 13. Drive rod; 131. Screw; 14. Nut; 20. Wind deflector; 20a. Mounting hole; 21. Support part; 22. First elastic sealing part; 25. Second elastic sealing part; 23. Second mating part; 30. Mounting bracket; 31. Main frame; 32. First mating part; 321. Sleeve rod; 2. Housing; 201. Receiving cavity; 231. Sleeve; 202. Inner wall surface of mounting; 40. Mating unit; 203. Air outlet; 203a. Air inlet; 203b. Air outlet; 4. Exhaust duct; A. Preset direction; B. First direction; C. Second direction. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] Please refer to Figure 1 As shown, the first aspect of this application proposes an electrically controlled air valve 1, which can seal the air outlet 203 that discharges refrigerant after the refrigerant leaking inside the refrigerant switching device has been discharged, thereby ensuring the normal operation of the refrigerant switching device.

[0034] The housing 2 of the refrigerant switching device has a receiving cavity 201 and an air vent 203 communicating with the receiving cavity 201. The electrically controlled air valve 1 is installed in the receiving cavity 201 of the housing 2 of the refrigerant switching device and controls the opening and closing of the air vent 203 in the receiving cavity 201 of the housing 2 of the refrigerant switching device to prevent the refrigerant switching device from protruding from the outer wall of the housing 2 and affecting the installation of other devices.

[0035] The electrically controlled air valve 1 includes a drive component 10 and a baffle component 20. The drive component 10 is fixedly installed on the housing 2 of the refrigerant switching device, and the baffle component 20 is provided corresponding to the air outlet 203 of the housing 2 of the refrigerant switching device. The drive component 10 is connected to the baffle component 20 to drive the baffle component 20 to move relative to the air outlet 203 along a preset direction A, so that the baffle component 20 switches between a first state and a second state. In the first state, the baffle component 20 is in contact with the housing 2 to close the air outlet 203. In the second state, the baffle component 20 is spaced apart from the housing 2 to open the air outlet 203.

[0036] The following combination Figures 1 to 5 The specific structure of the electrically controlled air valve 1 will be described in detail.

[0037] The electrically controlled air valve 1 is installed within the receiving cavity 201 of the housing 2 of the refrigerant switching device. The "receiving cavity 201" is understood as the area within the housing 2 used to accommodate the electrically controlled air valve 1 and other components of the refrigerant switching device (such as the refrigerant leak detection module described below). The specific shape of the receiving cavity 201 is not limited here; designers can design it appropriately according to actual needs. It is worth noting that any refrigerant switching device of any structure in the art can be reasonably used as a substitute.

[0038] like Figure 1 As shown, the electrically controlled air valve 1 includes a drive component 10 and a baffle component 20.

[0039] The drive component 10 serves as the power source in the electrically controlled air valve 1, driving other components within the valve (such as the baffle 20 described below) to move in a preset direction A. The drive component 10 is fixedly mounted on the housing 2 of the refrigerant switching device. The housing 2 possesses good rigidity and strength, ensuring the long-term stable operation of the drive component 10. The specific structure of the drive component 10 will be described in detail below.

[0040] The baffle 20 is provided for the air vent 203 of the housing 2 of the refrigerant switching device. The air vent 203 may include an air inlet 203a for allowing external air to enter the receiving cavity 201 and an air outlet 203b for allowing external air to flow out of the receiving cavity 201. That is, the external air flows in from the air inlet 203a of the housing 2 and drives the refrigerant leaking in the receiving cavity 201 to flow out from the air outlet 203b, thereby discharging the refrigerant.

[0041] The first state of the wind deflector 20 is a state in which airflow is restricted from entering and exiting the receiving cavity 201 through the air vent 203 of the housing 2. Specifically, the driving member 10 drives the wind deflector 20 to move in a preset direction A until the wind deflector 20 contacts the housing 2 and closes the air vent 203, so that the airflow generated by the external air source cannot enter or exit the receiving cavity 201 through the air vent 203, thereby placing the wind deflector 20 in the first state.

[0042] The second state of the wind deflector 20 is a state in which airflow can enter and exit the aforementioned receiving cavity 201 from the air vent 203 of the housing 2, and drive the refrigerant leaking from the receiving cavity 201 to enter and exit from the air vent 203. Specifically, the drive member 10 drives the wind deflector 20 to move in a preset direction A until the wind deflector 20 is spaced apart from the housing 2, opening the air vent 203, so that the wind deflector 20 is in the second state, and airflow enters and exits from the air vent 203 through the gap between the wind deflector 20 and the housing 2.

[0043] In this embodiment, the state in which the air baffle 20 and the housing 2 are spaced apart, leaving the air vent 203 open, is always the second state. It is understood that the larger the distance between the air baffle 20 and the air vent 203, the larger the area for airflow, the lower the wind resistance, and the more beneficial it is for the discharge of refrigerant leaking from the containment cavity 201. This embodiment does not limit the distance between the air baffle 20 and the air vent 203; it can be selected according to actual needs.

[0044] The driving component 10 can drive the wind deflector 20 to approach the air vent 203 in a preset direction A, so that the wind deflector 20 switches from the second state to the first state. Alternatively, the driving component 10 can also drive the wind deflector 20 to move away from the air vent 203 in a preset direction A, so that the wind deflector 20 switches from the first state to the second state.

[0045] The housing 2 has an inner wall surface 202 with an air vent 203. A preset direction A can be parallel to the direction in which the air vent 203 is located. When the inner wall surface 202 is flat, the preset direction A is perpendicular to the inner wall surface 202. In this case, the baffle 20 moves in a straight line away from or towards the air vent 203 under the drive of the drive member 10. When the baffle 20 contacts the housing 2, its projection in the preset direction A completely covers the air vent 203, thus completely sealing the air vent 203 and preventing gas from entering or leaving the receiving cavity from the air vent 203. The housing 2 of the refrigerant switching device has at least one of the following surfaces: front cover, rear cover, top cover, bottom cover, left cover, and right cover. The surface of the housing 2 has an inner wall surface 202 with an air vent 203. When the left cover has an air vent 203, the preset direction A can be the direction from the left cover to the right cover. When the top cover has an air vent 203, the preset direction A can be the direction from the top cover to the bottom cover. When the front cover has an air vent 203, the preset direction A can be the direction from the front cover to the rear cover.

[0046] Based on the electric air control valve in this application embodiment, by designing the driving component 10 and the baffle component 20, the driving component 10 drives the baffle component 20 to move along a preset direction A. In the second state, the baffle component 20 is spaced apart from the housing 2 so that the air vent 203 is open, and the refrigerant can be discharged from the air vent 203 in a timely manner, effectively avoiding the safety risks caused by refrigerant leakage. In the first state, the baffle component 20 is in contact with the housing 2 to close the air vent 203, so that the housing 2's accommodating cavity 201 has good airtightness, preventing water vapor from entering or leaving the housing 2's accommodating cavity 201 from the air vent 203, effectively preventing water vapor from entering the accommodating cavity 201 and forming condensation on the device surface, thereby ensuring the normal operation of the refrigerant switching device. Furthermore, in this embodiment, the driving component 10 drives the wind deflector 20 to move along a preset direction A, so that the wind deflector 20 is either fully closed or open relative to the air vent 203, rather than gradually changing the obstruction area when opening and closing the air vent 203. This results in a better sealing effect on the air vent 203 and reduces the likelihood of poor sealing due to the driving structure not being in the correct position of the wind deflector. Moreover, the driving component 10 drives the wind deflector 20 in a direct push or direct delivery manner, resulting in high opening and closing efficiency of the wind deflector 20 to the air vent 203. This facilitates timely response to refrigerant leaks inside the refrigerant switching device, allowing for prompt discharge of the leaked refrigerant.

[0047] like Figure 1 As shown, the wind deflector 20 includes a support portion 21 and a first elastic sealing portion 22. The support portion 21 is connected to the drive component 10, and the first elastic sealing portion 22 is connected to the support portion 21. In the second state, the first elastic sealing portion 22 is used to abut against the inner mounting wall surface 202 of the housing 2 of the refrigerant switching device to seal the air vent 203. The support portion 21 can be understood as a rigid support structure that is not easily damaged by external forces (such as bending deformation or breakage). The support portion 21 provides stable support for the first elastic sealing portion 22. Optionally, the support portion 21 is flat. When the first elastic sealing portion 22 abuts against the housing 2, the support portion 21 evenly compresses the first elastic sealing portion 22, making the first elastic sealing portion 22 fit more tightly against the housing 2, thereby ensuring the sealing of the air vent 203. The specific form of the first elastic sealing portion 22 is not required here; designers can design it reasonably according to actual needs. For example, the first elastic sealing portion 22 can be, but is not limited to, using sealing sponge, silicone pad, rubber pad, etc.

[0048] When the first elastic sealing part 22 comes into contact with the housing 2, it can be squeezed and deformed by the support part 21. The force of the first elastic sealing part 22 restoring its elastic deformation makes the first elastic sealing part 22 and the housing 2 have better sealing stability. Optionally, the first elastic sealing part 22 can extend into the air outlet 203, so that the first elastic sealing part 22 abuts against the wall surface of the housing 2 that defines the air outlet 203 to close the air outlet 203; or, one part of the first elastic sealing part 22 extends into the air outlet 203 and abuts against the wall surface of the housing 2 that defines the air outlet 203, and the other part of the first elastic sealing part 22 abuts against the mounting inner wall surface 202 of the housing 2, thereby closing the air outlet 203. In this case, the projection of the first elastic sealing part 22 in the preset direction A not only covers the air outlet 203, but also partially covers the mounting inner wall surface, which has good sealing stability.

[0049] The wind deflector 20 is provided in relation to the air vent 203. When the air vent 203 is opened, the wind deflector 20 also guides the airflow. The airflow spreads outwards after passing the surface of the wind deflector 20, stirring the gas flow inside the receiving cavity 201, thereby more fully driving the refrigerant in the receiving cavity 201 to be discharged from the receiving cavity 201.

[0050] Optionally, such as Figure 2 As shown, the electric control valve 1 may also include a second elastic sealing part 25, which can be fixedly installed on the mounting inner wall surface 202 of the housing 2. In this design, by designing multiple first elastic sealing parts 22 to be stacked, in the first state of the wind deflector 20, the first elastic sealing parts 22 and the second elastic sealing parts 25 abut against each other, improving the sealing performance of the air outlet 203. Furthermore, the cooperation of the first elastic sealing parts 22 and the second elastic sealing parts 25 in the preset direction A provides a larger buffer space, effectively preventing the wind deflector 20 from failing to move into place and sealing poorly due to insufficient driving accuracy of the drive component 10.

[0051] like Figures 1-3 As shown, the electrically controlled air valve 1 includes a mounting bracket 30. A drive component 10 is mounted on the mounting bracket 30 and then mounted on the housing 2 of the refrigerant switching device via the mounting bracket 30. The mounting bracket 30 has a first mating part 32, and the air baffle 20 has a second mating part 23. The first mating part 32 and the second mating part 23 cooperate to form a mating unit 40. Each mating unit 40 is used to guide the air baffle 20 to move along a preset direction A. The drive component 10 is fixedly mounted on the housing 2 of the refrigerant switching device, meaning that the drive component 10 is indirectly fixed to the housing 2 of the refrigerant switching device via the mounting bracket 30. In this design, by designing the first mating part 32 on the mounting bracket 30 and the second mating part 23 on the air baffle 20, the first mating part 32 and the second mating part 23 have a mating relationship, which not only helps the air baffle 20 move more smoothly but also guides the air baffle 20 to move along the preset direction A.

[0052] There can be many ways to arrange the number of mating units 40 and the different numbers of mating units 40, such as... Figures 1-3 As shown, the number of mating units 40 is multiple, which makes the relative movement between the windshield 20 and the mounting bracket 30 more stable and enhances the guiding stability of the windshield 20 moving along the preset direction A. The driving member 10 has a driving rod 13 with its central axis extending along the preset direction A. The windshield 20 is disposed on the driving rod 13. Optionally, in the direction perpendicular to the preset direction A, the distance between each mating unit 40 and the central axis of the driving rod 13 is equal. For example, when the number of mating units 40 is two or three, the distance between these mating units 40 and the central axis of the driving member 10 in the direction perpendicular to the preset direction A is equal, and they are distributed in a ring around the outer periphery of the driving rod 10; or, every two sets of mating units 40 are arranged axially symmetrically about the central axis of the driving rod 13, in which case the number of mating units 40 is even.

[0053] Furthermore, the distance between each mating unit 40 and the central axis of the drive rod 13 in a direction perpendicular to the preset direction A is equal, and every two sets of mating units 40 are arranged symmetrically about the central axis of the drive rod 13. For example, there are two mating units 40, which are arranged symmetrically about the central axis of the drive rod 13 in the first direction. Alternatively, there are four mating units 40, where two mating units 40 are arranged symmetrically about the central axis of the drive rod 13 in the first direction, and the other two mating units 40 are arranged symmetrically about the central axis of the drive rod 13 in the second direction. The first direction and the second direction are perpendicular to the preset direction A. The first direction can be the direction from the top cover to the bottom cover of the housing, and the second direction can be the direction from the rear cover to the front cover of the housing.

[0054] like Figures 1-4 As shown, in the first embodiment, the mounting bracket 30 includes a main frame 31, which is used to install on the housing 2 of the refrigerant switching device. A first mating part 32 is fixedly installed on the main frame 31. One of the first mating part 32 and the second mating part 23 is a sleeve rod 321 and the other is a sleeve 231. The sleeve rod 321 extends along a preset direction A, and the sleeve 231 is sleeved around the sleeve rod 321. In this design, by designing the mating unit 40 as a sleeve 231 and a sleeve rod 321, the wind deflector 20 is indirectly connected to the main frame 31 via the sleeve 231 and the sleeve rod 321, so that the wind deflector 20 moves stably along the preset direction A, thereby better guiding the wind deflector 20 to move along the preset direction A.

[0055] In the second embodiment, one of the first mating part 32 and the second mating part 23 is a slider (not shown in the figure) and the other is a groove (not shown in the figure). The groove extends along a preset direction A, and the slider is slidably connected in the groove. In this design, by designing the mating unit 40 as a slider and a groove, the wind deflector 20 is indirectly connected to the main frame 31 via the slider and the groove, which makes the movement of the wind deflector 20 along the preset direction A smoother.

[0056] More specifically, such as Figures 1-4 As shown, in some embodiments, the end of the sleeve rod 321 is fitted against the inner wall surface 202 of the housing 2 of the refrigerant switching device, that is, one end of the sleeve rod 321 is fixedly installed on the main frame 31, and the other end of the sleeve rod 321 is fixedly connected to the inner wall of the housing 2. The end of the sleeve rod 321 is spaced apart from the inner wall surface 202 of the housing 2 of the refrigerant switching device, that is, one end of the sleeve rod 321 is fixedly installed on the main frame 31, and the other end of the sleeve rod 321 is spaced apart from the inner wall of the housing 2. It should be noted that when the distance between the other end of the sleeve rod 321 and the inner wall of the housing 2 is too large, in the first state described above, the sleeve 231 will detach from the sleeve rod 321 as it moves with the wind deflector 20. Therefore, the design spacing is smaller than the dimension of the sleeve 231 in the preset direction A, thereby preventing the sleeve 231 from detaching from the sleeve rod 321. In this design, by designing the first mating part 32 as a sleeve rod 321 and the second mating part 23 as a sleeve 231, based on the premise that the sleeve 231 does not detach from the sleeve rod 321, the mating effect between the sleeve 231 and the sleeve rod 321 can not only help the wind deflector 20 move more smoothly, but also restrict the wind deflector 20 from moving along the preset direction A.

[0057] Considering that the drive component 10 can drive the windshield component 20 to move along a preset direction A, in order to enable the drive component 10 to have the corresponding function, such as Figures 2-4As shown, in some embodiments, the drive component 10 includes a motor 11, a coupling 12, a drive rod 13, and a nut 14. The motor 11 is used to be fixedly installed on the housing 2 of the refrigerant switching device. Specifically, the motor 11 is installed on the main frame 31, the coupling 12 is connected to the output end of the motor 11, the drive rod 13 is a screw 131 with its central axis extending along a preset direction A and is connected to the coupling 12, and the nut 14 is threaded around the outer periphery of the screw 131 and connected to the wind deflector 20, so that when the motor 11 starts to drive the coupling 12 to rotate and drive the screw 131 to rotate around the central axis of the screw 131, the wind deflector 20 is driven to move in the preset direction A. It is understood that the nut 14 is fixedly mounted on the wind deflector 20. Specifically, the nut 14 is installed on the support, and the shaft of the motor 11 is connected to the screw 131 via a coupling 12. The rotation of the motor 11 drives the screw 131 to rotate, and the screw 131 and the nut 14 maintain a relative motion state. That is, when the screw 131 moves around the central axis, the screw 131 drives the wind deflector 20 to move linearly along a preset direction A, and the extension direction of the central axis is parallel to or coincides with the preset direction A. Preferably, the motor 11 can be, but is not limited to, a stepper motor 11. With this design, when the screw 131 moves, the screw 131 and the nut 14 are in a relative motion state, so that the nut 14 can drive the wind deflector 20 to move along the preset direction A, thereby realizing the switching of the wind deflector 20 between the first state and the second state, thus realizing the closing and opening of the air vent 203.

[0058] In this embodiment, the motor 11 drives the screw 131 to rotate. The screw 131 and the nut 14 fixed on the wind deflector 20 convert the axial rotation of the motor 11 into the linear motion of the wind deflector 20 along the axial axis of the motor 11. Combined with the first elastic sealing part 22, when the driving member 10 drives the first elastic sealing part 22 to contact the housing 2, it can axially compress the first elastic sealing part 22 on the driving rod 13, which can effectively prevent the stepper motor 11 from falling and affecting the sealing effect of the air outlet 203.

[0059] like Figures 1-5 As shown, in some embodiments, the wind deflector 20 has a mounting hole 20a, and a nut 14 is disposed in the mounting hole 20a and fixedly installed on the wind deflector 20; a screw 131 passes through the nut 14, and the end of the screw 131 is used to fit against the inner wall surface 202 of the housing 2 of the refrigerant switching device. Here, the specific connection method between the nut 14 and the wind deflector 20 when the nut 14 is installed in the mounting position is not specifically required; the designer can design it reasonably. For example, the nut 14 can be, but is not limited to, formed as an integral structure with the wind deflector 20 by injection molding or 3D printing. In this design, by designing the nut 14 to be fixedly installed in the mounting position, when the screw 131 rotates around its own central axis, the screw 131 and the nut 14 maintain relative movement, so as to realize that the wind deflector 20 moves along a preset direction A.

[0060] The second aspect of this application discloses a refrigerant switching device, which includes a housing 2 and an electrically controlled air valve 1. The housing 2 has a receiving cavity 201 and an air outlet 203 communicating with the receiving cavity 201. The electrically controlled air valve 1 is located inside the receiving cavity 201 and installed in the housing 2. In this design, the refrigerant switching device with the aforementioned electrically controlled air valve 1 can, on the one hand, close the air outlet 203 when the refrigerant switching device is working normally, so as to ensure that the receiving cavity 201 of the entire refrigerant switching device has good airtightness; on the other hand, when a refrigerant leak occurs, the electrically controlled air valve 1 can promptly open the air outlet 203 to facilitate the removal of the leaked refrigerant.

[0061] The air vent 203 of the housing 2 includes an air inlet 203a and an air outlet 203b. The air inlet 203a and the air outlet 203b are arranged opposite each other along a preset direction A so that the air inlet 203a and the air outlet 203b can achieve gas convection, which facilitates the better discharge of refrigerant leaked in the housing cavity 201.

[0062] At least one of the air inlet 203a and air outlet 203b is equipped with an electrically controlled air valve 1. This can be understood as both air inlet 203a and air outlet 203b having electrically controlled air valves 1, or air inlet 203a having an electrically controlled air valve 1 but air outlet 203b not having an electrically controlled air valve 1, or air outlet 203b having an electrically controlled air valve 1 but air inlet 203a not having an electrically controlled air valve 1. In this design, by designing multiple electrically controlled air valves 1, good sealing performance can be achieved for both air inlet 203a and air outlet 203b when the refrigerant switching device is working normally, thus ensuring the sealing performance of the entire refrigerant switching device's receiving cavity 201.

[0063] Optionally, an electrically controlled air valve 1 is provided at the air inlet 203a. When it is necessary to extract gas from the receiving cavity 201 at the air outlet 203b, the baffle plate 20 moves from the first state of closing the air inlet 203a to the second state of opening the air inlet 203a. Under the action of negative pressure, the baffle plate 20 moves in the direction of the wind, making the movement of the baffle plate 20 smoother and more efficient.

[0064] In some embodiments, the number of air vents 203 is multiple (not shown in the figure). In a first state, the baffle 20 is used to contact the housing 2 and close the multiple air vents 203. That is, a multiple preset number of air vents 203 are provided, and a corresponding number of baffles 20 are also provided. In this design, by designing multiple air vents 203, the amount of refrigerant discharged is increased, and the discharge of refrigerant is accelerated; at the same time, by designing multiple baffles 20 corresponding to the air vents 203, the air vents 203 can be closed after the refrigerant discharge is completed, so as to ensure the airtightness of the receiving cavity 201.

[0065] The refrigerant switching device also has at least one exhaust duct 4, each exhaust duct 4 corresponding to one air outlet 203, installed on the outer surface of the housing 2 and covering the air outlet 203, so that gas can enter and exit the receiving cavity 201 through the exhaust duct 4. The exhaust duct 4 is located on the outer surface of the housing 2, which facilitates the sealing design between the exhaust duct 4 and the outer surface of the housing 2, so that all the gas in the receiving cavity 201 can enter and exit the receiving cavity 201 through the exhaust duct 4, preventing the gas in the receiving cavity from overflowing from the gap between the exhaust duct 4 and the housing, and preventing refrigerant from leaking from the air outlet 203.

[0066] Optionally, the refrigerant switching device also includes a fan (not shown in the figure), which is located in the exhaust duct 4. When the fan is running, it drives the gas in the receiving cavity 201 to enter and exit the receiving cavity 201 through the exhaust duct 4. For example, an exhaust duct 4 is provided at the air inlet 203a, and a fan is installed inside the exhaust duct 4 at the air inlet 203a. When the fan operates, it blows gas into the receiving cavity 201 and blows the gas out from the air outlet 203b; or, an exhaust duct 4 is provided at the air outlet 203b, and a fan is installed inside the exhaust duct 4 at the air outlet 203b. When the fan operates, it draws gas from the receiving cavity 201 and draws the gas out of the receiving cavity 201; or, exhaust ducts 4 are provided at the air inlet 203a and the air outlet 203b respectively, and fans are installed inside the exhaust ducts 4 respectively. The fan at the air inlet 203a blows gas into the receiving cavity 201, and the fan at the air outlet 203b draws gas from the receiving cavity 201, thereby accelerating the discharge of gas from the receiving cavity 201.

[0067] In some other embodiments, the exhaust duct 4 may include a docking port for connecting to the fan assembly of the air conditioning system to transmit airflow between the receiving cavity 201 and the fan assembly. Correspondingly, when the exhaust duct 4 is provided at the air inlet 203a, the fan assembly blows gas into the receiving cavity 201 through the exhaust duct 4; when the exhaust duct 4 is provided at the air outlet 203b, the fan assembly draws gas from the receiving cavity 201 through the exhaust duct 4, thereby discharging the gas from the receiving cavity 201.

[0068] A third aspect of this application discloses an air conditioning system (not shown in the figure), including a refrigerant switching device, a refrigerant leak detection module (not shown in the figure), and an electronic control module (not shown in the figure). The electronic control module is signal-connected to the refrigerant leak detection module and the drive unit 10. It is worth noting that, in order to better discharge leaked refrigerant and thus ensure the normal operation of the refrigerant switching device, the air conditioning system also includes an external air duct (not shown in the figure) and a fan assembly (not shown in the figure). The external air duct is connected to the aforementioned exhaust duct 4 to transmit airflow between the receiving cavity 201 and the fan assembly, so as to promptly discharge the refrigerant leaked into the receiving cavity 201.

[0069] It is easy to understand that when the refrigerant leak detection module detects that the refrigerant content in the receiving cavity 201 of the refrigerant switching device exceeds the preset content, the exhaust fan starts to draw gas from the receiving cavity 201. The electronic control module receives an electrical signal from the refrigerant leak detection module and controls the drive component 10 to drive the baffle component 20 to be spaced apart from the housing 2 along a preset direction A so that the air inlet 203a is open. In this design, the air conditioning system with the above-mentioned refrigerant switching device can achieve the sealing and opening of the air outlet 203 by the electronically controlled air valve 1, so that the air conditioning system can better discharge the leaked refrigerant after detecting the leak, thereby improving the system's efficiency and safety.

[0070] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrically controlled air valve, characterized in that, For installation within the housing of a refrigerant switching device, including: A driving component, used for fixed installation on the housing of the refrigerant switching device; and A wind deflector is provided for the air vents corresponding to the housing of the refrigerant switching device; The driving component is connected to the wind deflector to drive the wind deflector to move relative to the air vent in a preset direction, so that the wind deflector switches between a first state and a second state. In the first state, the wind deflector is in contact with the housing to close the air vent. In the second state, the wind deflector is spaced apart from the housing to open the air vent.

2. The electrically controlled air valve as described in claim 1, characterized in that, The windbreak component includes: The support part is connected to the drive component; A first elastic sealing part is connected to the support part; in the second state, the first elastic sealing part is used to abut against the mounting inner wall surface of the housing of the refrigerant switching device to seal the air outlet.

3. The electrically controlled air valve as described in claim 1, characterized in that, The electrically controlled air valve includes a mounting bracket, and the drive component is mounted on the mounting bracket and then mounted on the housing of the refrigerant switching device through the mounting bracket. The mounting bracket has a first mating part, and the windshield has a second mating part. The first mating part and the second mating part cooperate to form a mating unit, and each mating unit is used to guide the windshield to move along the preset direction.

4. The electrically controlled air valve as described in claim 3, characterized in that, The driving component has a driving rod with a central axis extending along the preset direction, and the windproof component is disposed on the driving rod; the number of the mating units is multiple sets; In a direction perpendicular to the preset direction, the distance from each of the mating units to the central axis of the drive rod is equal; and / or, Each pair of the mating units is arranged axially symmetrically about the central axis of the drive rod.

5. The electrically controlled air valve as described in claim 3, characterized in that, The mounting bracket includes a main frame, which is used to install on the housing of the refrigerant switching device. The first mating part is fixedly installed on the main frame. One of the first mating part and the second mating part is a sleeve rod and the other is a sleeve. The sleeve rod extends along a preset direction and the sleeve is sleeved around the sleeve rod.

6. The electrically controlled air valve as described in claim 5, characterized in that, The first mating part is a sleeve rod, and the second mating part is a sleeve. The end of the sleeve is designed to fit snugly against the inner wall of the housing of the refrigerant switching device; or, The end of the sleeve is spaced apart from the inner wall of the housing of the refrigerant switching device, and the distance is smaller than the size of the sleeve in the preset direction.

7. The electrically controlled air valve as described in claim 1, characterized in that, The driving component includes: The motor is used to be fixedly installed in the housing of the refrigerant switching device; A coupling connected to the output end of the motor; The drive rod is a screw rod whose central shaft extends along the preset direction and is connected to the coupling; A nut, threadedly fitted around the outer periphery of the screw and connected to the wind deflector, so that when the motor starts and drives the coupling to rotate, thereby causing the screw to rotate around the central axis of the screw, the wind deflector moves in the preset direction.

8. The electrically controlled air valve as described in claim 7, characterized in that, The windshield has a mounting hole, and the nut is disposed in the mounting hole and fixedly installed on the windshield; the screw passes through the nut, and the end of the screw is used to fit against the inner wall surface of the housing of the refrigerant switching device.

9. A refrigerant switching device, characterized in that, include: The housing has a receiving cavity and an air vent communicating with the receiving cavity; and The electrically controlled air valve as described in any one of claims 1-8, wherein the electrically controlled air valve is located within the receiving cavity and installed in the housing.

10. The refrigerant switching device as described in claim 9, characterized in that, The air vent includes an air inlet and an air outlet; the air inlet and the air outlet are arranged opposite each other along the preset direction; at least one of the air inlet and the air outlet is provided with the electrically controlled air valve.

11. The refrigerant switching device as described in claim 9, characterized in that, The number of air vents is multiple. In the first state, the wind deflector is used to contact the housing and close the multiple air vents.

12. The refrigerant switching device as described in claim 9, characterized in that, The refrigerant switching device also has at least one exhaust duct, each exhaust duct being installed on the outer surface of the housing corresponding to one of the air outlets and covering the air outlet so that gas enters and exits the receiving cavity through the exhaust duct.

13. The refrigerant switching device as described in claim 12, characterized in that, The refrigerant switching device includes a fan, which is located inside the exhaust duct to drive the gas in the receiving cavity to enter and exit the receiving cavity through the exhaust duct; or, The exhaust duct includes a docking port for connecting to the fan assembly of the air conditioning system to transmit airflow between the receiving cavity and the fan assembly.

14. An air conditioning system, characterized in that, Includes the refrigerant switching device as described in any one of claims 9-13; A refrigerant leakage detection module is used to detect the refrigerant content within the containment cavity; and The electronic control module is connected to the refrigerant leak detection module and the drive unit via signals, and is used to control the drive unit to drive the wind deflector to open the air vent when the refrigerant content transmitted by the refrigerant leak detection module exceeds the preset content.

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