Refrigerant switching device housing, refrigerant switching device, and heating and air conditioning device

Abstract

This application discloses a refrigerant switching device housing, a refrigerant switching device, and HVAC equipment. The refrigerant switching device housing includes a main body and a ventilation structure. The main body forms a receiving cavity and has an air inlet and an air outlet communicating with the receiving cavity. The ventilation structure is connected to the main body and has a ventilation state. In the ventilation state, airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet. By designing the refrigerant switching device housing to include a ventilation structure, and having a ventilation state where airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet, if refrigerant transported in the refrigerant switching pipeline leaks into the receiving cavity, the leaked refrigerant can be carried out of the receiving cavity through the airflow entering through the air inlet when the ventilation structure is in the ventilation state, thus preventing fire and ensuring safety.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and in particular to a refrigerant switching device housing, a refrigerant switching device, and HVAC equipment. Background Technology

[0002] In multi-split air conditioning systems, refrigerant is typically transferred between heat source units and load units via a refrigerant switching device, allowing one heat source unit to work simultaneously with multiple load units. This refrigerant switching device includes a housing and a piping main body housed within the housing. The piping main body includes a reversing valve, piping, and a pressure vessel.

[0003] The main body of the pipeline carries refrigerant. HVAC equipment usually uses flammable refrigerant. When flammable refrigerant leaks, it may cause a fire and cause injury. Utility Model Content

[0004] This application provides a refrigerant switching device housing, a refrigerant switching device, and HVAC equipment to improve the problem in related technologies where leakage of flammable refrigerant may cause fire and injury.

[0005] This application provides a housing for a refrigerant switching device, including: The shell body has a receiving cavity, and the shell body is provided with an air inlet and an air outlet communicating with the receiving cavity; and, The ventilation structure is connected to the shell body and has a ventilation state. In the ventilation state, the airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet.

[0006] In some embodiments, the ventilation structure includes: The air intake component is located at the air inlet and connected to the main body of the housing. In the ventilation state, the air intake component opens the air inlet.

[0007] In some embodiments, the air intake assembly includes: A housing, located outside and connected to the main body of the housing, having an inner cavity, and provided with a connecting opening and an air inlet communicating with the inner cavity; the connecting opening connecting to the air inlet; and, The baffle opens the air inlet when the ventilation is in operation.

[0008] In some embodiments, the air inlet has a first limiting surface and a second limiting surface opposite to each other along the movement direction of the baffle. The baffle is connected to a limiting protrusion that extends into the air inlet. When the baffle opens or closes the air inlet, the limiting protrusion moves between the first limiting surface and the second limiting surface. When the limiting protrusion abuts against the first limiting surface, the baffle opens the air inlet; when the limiting protrusion abuts against the second limiting surface, the baffle closes the air inlet.

[0009] In some embodiments, the housing includes: The first shell plate has an air inlet. A baffle is fitted to the first shell plate and can rotate relative to the first shell plate around a first axis to open or close the air inlet. The first axis is perpendicular to the first shell plate.

[0010] In some embodiments, the housing further includes: Multiple second shell plates are located outside the shell body and surround the air inlet; a first shell plate is located on the side of the multiple second shell plates away from the shell body and connects the multiple second shell plates, and the multiple second shell plates and the first shell plate enclose each other to form an inner cavity.

[0011] In some embodiments, the housing further includes: Multiple flanges are located on the side of multiple second shell plates away from the first shell plate. One end of each flange is connected to a corresponding second shell plate, and the other end of each flange extends away from the inner cavity. The flanges are connected to the shell body.

[0012] In some embodiments, the air intake assembly further includes: The driving component includes a fixed part and a movable part that can move relative to each other. The fixed part is fixed relative to the cover, and the movable part is connected to a baffle to drive the baffle to open or close the air inlet.

[0013] In some embodiments, the air intake assembly further includes: The connector has a first connection position and a plurality of second connection positions. The first connection position extends along a first axis, and the plurality of second connection positions are spaced apart on the outer periphery of the first connection position. The first connection position is connected to a movable part, and the plurality of second connection positions are connected to a baffle. The movable part is used to drive the baffle to rotate around the first axis to open or close the air inlet.

[0014] In some embodiments, the air intake assembly further includes: A fixing frame is located in the inner cavity and connected to the cover. The fixing part is connected to the fixing frame.

[0015] In some embodiments, the air intake assembly further includes: The elastic element and the fixing frame include a first fixing plate, which is opposite to and spaced apart from the baffle. The elastic element is sleeved on the fixing part and located between the first fixing plate and the baffle.

[0016] In some embodiments, the mounting bracket includes: The first fixing plate is positioned opposite to and spaced apart from the baffle. A second fixing plate, which is connected to the first fixing plate and extends toward the baffle; and The third fixing plate is connected to the side of the second fixing plate away from the first fixing plate. The third fixing plate extends in a direction parallel to the baffle and is fitted and connected to the cover.

[0017] In some embodiments, the ventilation structure includes: The air outlet assembly includes an air outlet duct, which is located outside the housing body and connected to the housing body. The air outlet duct is connected to the air outlet and is used to connect an external exhaust device. The exhaust device is turned on when ventilation is in progress.

[0018] In some embodiments, the refrigerant switching device housing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. One of the air inlet and the air outlet is located on the second side, and the other is located on the fourth side. The air inlet and the air outlet are located at opposite ends of the refrigerant switching device housing along the second direction. The first direction, the second direction, and the height direction of the refrigerant switching device housing are perpendicular to each other.

[0019] In some embodiments, it also includes: The refrigerant detector is located in the containment cavity; The controller is electrically connected to the refrigerant detector and the ventilation structure, and is used to control the ventilation structure to be in a ventilation state when the refrigerant concentration detected by the refrigerant detector exceeds a first preset concentration.

[0020] Secondly, embodiments of this application also provide a refrigerant switching device, comprising: The aforementioned refrigerant switching device housing; and, The refrigerant switching pipeline includes a pipeline body, a heat source interface pipe group connected to the pipeline body, and multiple load interface pipe groups connected to the pipeline body. The pipeline body is located inside the refrigerant switching device housing; the heat source interface pipe group and the multiple load interface pipe groups pass through the refrigerant switching device housing and are located outside the refrigerant switching device housing.

[0021] In some embodiments, the refrigerant switching pipeline also includes an expansion interface pipe assembly connected to the pipeline body, the expansion interface pipe assembly passing through the housing of the refrigerant switching device and located outside the housing of the refrigerant switching device.

[0022] In some embodiments, the refrigerant switching device housing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. The load interface pipe assembly is located on the second side of the refrigerant switching device housing, the heat source interface pipe assembly is located on the third side of the refrigerant switching device housing, and the expansion interface pipe assembly is located on the fourth side of the refrigerant switching device housing.

[0023] In some embodiments, one of the load interface pipe assembly and the expansion interface pipe assembly is located on the same side of the refrigerant switching device housing as the air inlet, and the other is located on the same side of the refrigerant switching device housing as the air outlet.

[0024] Thirdly, embodiments of this application also provide a heating, ventilation, and air conditioning (HVAC) device, including: The aforementioned refrigerant switching device; Heat source, heat source connection to heat source interface pipe assembly; and, Multiple loads, each load is connected to a corresponding load interface group.

[0025] The refrigerant switching device housing, refrigerant switching device, and HVAC equipment of this application embodiment are designed with the refrigerant switching device housing including a ventilation structure, and the ventilation structure has a ventilation state. In the ventilation state, airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet. Thus, if the refrigerant transported in the refrigerant switching pipeline leaks into the receiving cavity, when the ventilation structure is in the ventilation state, the refrigerant leaked into the receiving cavity can be carried by the airflow entering through the air inlet and exited from the receiving cavity through the air outlet, thus avoiding fire and ensuring safety. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a cross-sectional structural schematic diagram of the HVAC equipment provided in some embodiments of this application; Figure 2 This is a schematic diagram of the refrigerant switching device provided in some embodiments of this application; Figure 3 yes Figure 2 The diagram shows the structure of the air inlet assembly in the refrigerant switching device when the baffle closes the air inlet. Figure 4 yes Figure 2 The diagram shows the structure of the air inlet assembly in the refrigerant switching device when the baffle opens the air inlet. Figure 5 yes Figure 2 The diagram shows the exploded structure of the air intake assembly in the refrigerant switching device. Figure 6 yes Figure 2 The diagram shows the structure of the air inlet assembly in the refrigerant switching device when the baffle closes the air inlet. Figure 7 yes Figure 2The diagram shows the structure of the air inlet assembly in the refrigerant switching device when the baffle partially opens the air inlet. Figure 8 yes Figure 2 The diagram shows the structure of the air inlet assembly in the refrigerant switching device when the baffle opens the air inlet. Figure 9 This is a schematic diagram of the refrigerant switching device provided in some embodiments of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Refrigerant switching device housing; 1a. First side; 1b. Second side; 1c. Third side; 1d. Fourth side; 101. Shell body; 10. Top plate; 11. Side plate; 11a. First side plate; 11b. Second side plate; 11c. Third side plate; 11d. Fourth side plate; 12. Top plate; 70. Ventilation structure; 71. Air intake assembly; 711, baffle; 7111, limiting protrusion; 712, Cover; 7121, Inner cavity; 7122, Connecting opening; 7123, Air inlet; 7123a, First limiting surface; 7123b, Second limiting surface; 7124, First shell plate; 7125, Second shell plate; 7126, Flanged edge; 713. Driving component; 7131. Fixing part; 7132. Moving part; 714. Connector; 7141. First connecting position; 7142. Second connecting position; 715. Fixing frame; 7151. First fixing plate; 7152. Second fixing plate; 7153. Third fixing plate; 716. Elastic components; 72. Air outlet assembly; 721. Air outlet duct; 2. Refrigerant switching device; 201. Refrigerant switching pipeline; 202. Heat source interface pipe assembly; 203. Load interface pipe assembly; 204. Expansion interface pipe assembly; 3. HVAC equipment; 4. Heat source; 5. Load; x, first direction; y, second direction; z, altitude direction. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0030] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0031] Example 1 Please see Figure 1 This application provides a heating, ventilation, and air conditioning (HVAC) system 3, which includes a refrigerant switching device 2, a heat source 4, and multiple loads 5. The refrigerant switching device 2 connects the heat source 4 and the multiple loads 5, enabling one heat source 4 to drive multiple loads 5. The refrigerant switching device 2 allows some loads 5 to be in a cooling state while others are in a heating state, rather than all loads 5 being in either a cooling or heating state simultaneously, thus meeting diverse usage needs.

[0032] Please see Figure 1 and Figure 2 The refrigerant switching device 2 includes a refrigerant switching device housing 1 and a refrigerant switching pipeline 201. The refrigerant switching pipeline 201 is installed on the refrigerant switching device housing 1, realizing the modular design of the refrigerant switching device 2, which is convenient for installation and transportation.

[0033] The refrigerant switching pipeline 201 includes a pipeline body (not shown in the figure), a heat source interface pipe assembly 202 connected to the pipeline body, and multiple load interface pipe assemblies 203 connected to the pipeline body. The pipeline body is located inside the refrigerant switching device housing 1. The heat source interface pipe assembly 202 and the multiple load interface pipe assemblies 203 pass through the refrigerant switching device housing 1 and are located outside the housing 1. The heat source interface pipe assembly 202 is connected to a heat source 4, and the multiple load interface pipe assemblies 203 are connected one-to-one to multiple loads 5.

[0034] The refrigerant switching pipeline 201 also includes an expansion interface pipe assembly 204 connected to the main pipeline body. The expansion interface pipe assembly 204 passes through the refrigerant switching device housing 1 and is located outside the refrigerant switching device housing 1. The expansion interface pipe assembly 204 can be used to connect one refrigerant switching device 2 to another, thus enabling one heat source 4 to connect to multiple refrigerant switching devices 2, and each refrigerant switching device 2 to connect to at least one load 5, thereby enabling one heat source 4 to drive more loads 5.

[0035] The refrigerant switching device housing 1 has a first side 1a and a second side 1b opposite each other along the first direction x, and a third side 1c and a fourth side 1d opposite each other along the second direction y, wherein the first direction x and the second direction y are perpendicular to the height direction z of the refrigerant switching device housing 1.

[0036] The aforementioned heat source interface pipe assembly 202 is located on the third side 1c of the refrigerant switching device housing 1, and the extension interface pipe assembly 204 is located on the fourth side 1d of the refrigerant switching device housing 1. Designing the heat source interface pipe assembly 202 and the extension interface pipe assembly 204 to be located on opposite third sides 1c and fourth sides 1d of the refrigerant switching device housing 1 reduces the number of bends in the main pipe system connecting to the heat source interface pipe assembly 202 and the extension interface pipe assembly 204, making the piping simpler and easier to manufacture, and reducing the space occupied by the piping, thereby reducing the volume of the refrigerant switching device housing 1.

[0037] The aforementioned load interface pipe assembly 203 is located on the second side 1b of the refrigerant switching device housing 1. The heat source interface pipe assembly 202, multiple load interface pipe assemblies 203, and expansion interface pipe assemblies 204 are designed to be located on different sides of the refrigerant switching device housing 1. This facilitates the arrangement of the main piping within the refrigerant switching device housing 1, reduces the number of bends, and makes the piping simpler and easier to manufacture. On the other hand, it helps operators to distinguish between different interface pipe assemblies, making it convenient to connect to the heat source 4, load 5, refrigerant switching device 2, etc., and preventing confusion.

[0038] Next, see Figures 2 to 8 The refrigerant switching device housing 1 in the refrigerant switching device 2 is described in detail.

[0039] The refrigerant switching device housing 1 includes a housing body 101 and a ventilation structure 70. The housing body 101 forms a receiving cavity (not shown in the figure), and the housing body 101 is provided with an air inlet (not shown in the figure) and an air outlet (not shown in the figure) communicating with the receiving cavity. The ventilation structure 70 is connected to the housing body 101 and has a ventilation state. In the ventilation state, airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet.

[0040] It is understood that the main body of the above-mentioned pipeline is located inside the receiving cavity of the shell body 101, and the heat source interface pipe group 202, the load interface pipe group 203 and the expansion interface pipe group 204 pass through the shell body 101 and are located outside the refrigerant switching device shell 1.

[0041] The refrigerant switching device housing 1 designed above includes a ventilation structure 70, and the ventilation structure 70 has a ventilation state. In the ventilation state, the airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet. Thus, if the refrigerant transported in the refrigerant switching pipeline 201 leaks into the receiving cavity, when the ventilation structure 70 is in the ventilation state, the refrigerant leaked into the receiving cavity can be carried by the airflow entering through the air inlet and exited from the receiving cavity through the air outlet, thus avoiding fire and ensuring safety.

[0042] Next, see Figure 2 The shell body 101 is described in detail.

[0043] The shell body 101 includes a top seat 10 and a chassis (not shown in the figure). The top seat 10 forms a receiving cavity, and the bottom of the top seat 10 is provided with a bottom opening (not shown in the figure) communicating with the receiving cavity. The chassis covers the bottom opening and is detachably connected to the top seat 10.

[0044] When cleaning or maintenance of the refrigerant switching device 2 is required, the chassis can be removed. That is, by removing the chassis, the refrigerant switching device 2 can be cleaned and maintained. Compared with removing the outer shell and main body of the refrigerant switching device and pipeline, after-sales maintenance is more convenient and faster.

[0045] Furthermore, the main body of the pipeline is connected to the top seat 10, and the main body of the pipeline is independent of the chassis, so that the main body of the pipeline will not be affected when the chassis is removed, making disassembly and assembly more convenient.

[0046] The top seat 10 includes a top plate 12 and a plurality of side plates 11. The plurality of side plates 11 are located below the top plate 12 and connected to the outer periphery of the top plate 12. The plurality of side plates 11 and the top plate 12 enclose a receiving cavity. The plurality of side plates 11 form a bottom opening on the side away from the top plate 12.

[0047] The multiple side plates 11 include a first side plate 11a located on a first side 1a, a second side plate 11b located on a second side 1b, a third side plate 11c located on a third side 1c, and a fourth side plate 11d located on a fourth side 1d. The aforementioned heat source interface pipe assembly 202 passes through the third side plate 11c and is located on the third side 1c of the refrigerant switching device housing 1. The extension interface pipe assembly 204 passes through the fourth side plate 11d and is located on the fourth side 1d of the refrigerant switching device housing 1. The load interface pipe assembly 203 passes through the second side plate 11b and is located on the second side 1b of the refrigerant switching device housing 1.

[0048] The air inlet and air outlet are located on adjacent sides of the first side 1a, the second side 1b, the third side 1c, and the fourth side 1d. Due to space constraints, placing the air inlet and air outlet on adjacent sides allows for a more compact structure of the refrigerant switching device housing 1.

[0049] For example, one of the air inlet and the air outlet is located on the second side 1b, and the other is located on the fourth side 1d. Along the second direction y, the air inlet and the air outlet are located at opposite ends of the refrigerant switching device housing 1 to increase the distance between them, optimize the ventilation path, and facilitate the removal of refrigerant leaking from the housing body 101. Furthermore, the air inlet can be located on the same side of the refrigerant switching device housing 1 as one of the load interface pipe group 203 and the expansion interface pipe group 204, and the air outlet can be located on the same side of the refrigerant switching device housing 1 as the other of the load interface pipe group 203 and the expansion interface pipe group 204. For example, the air inlet is located on the second side 1b of the refrigerant switching device housing 1, and the air outlet is located on the fourth side 1d of the refrigerant switching device housing 1.

[0050] Next, see Figures 2 to 8 The ventilation structure 70 is described in detail.

[0051] It is understandable that when the ventilation structure 70 is in the ventilation state, the airflow needs to pass through the air inlet and the air outlet. Therefore, the air inlet and the air outlet are both in the open state when the ventilation structure 70 is in the ventilation state.

[0052] It should be noted that the ventilation structure 70 can also have a non-ventilated state. In the non-ventilated state, the air inlet and / or air outlet are closed, so that the airflow cannot enter the receiving cavity through the air inlet and / or the airflow cannot exit the receiving cavity through the air outlet.

[0053] The ventilation structure 70 includes an air inlet assembly 71, which is located at the air inlet and connected to the housing body 101. In the ventilation state, the air inlet assembly 71 opens the air inlet. The air inlet assembly 71 can be used to open or close the air inlet.

[0054] The air inlet assembly 71 includes a baffle 711, which is used to open or close the air inlet. In the ventilated state, the baffle 711 opens the air inlet; in the non-ventilated state, the baffle 711 closes the air inlet. Normally, the baffle 711 closes the air inlet to prevent impurities from entering the receiving cavity through the air inlet. When it is necessary to clean the refrigerant leaking inside the housing 101, the baffle 711 is opened. After the refrigerant leak inside the housing 101 is cleaned, the baffle 711 can be closed again.

[0055] The baffle 711 is connected to a limiting protrusion 7111, which is used to constrain the movement of the baffle 711 and prevent the baffle 711 from moving excessively when opening or closing the air inlet. This will be explained in more detail below.

[0056] The air inlet assembly 71 also includes a housing 712, which is located outside and connected to the housing body 101. The housing 712 forms an inner cavity 7121 and is provided with a connecting port 7122 communicating with the inner cavity 7121 and an air inlet 7123. The connecting port 7122 communicates with the air inlet. A baffle 711 is used to open or close the air inlet 7123, thereby opening or closing the air inlet. Specifically, in the ventilated state, the baffle 711 opens the air inlet 7123, and in the non-ventilated state, the baffle 711 closes the air inlet 7123.

[0057] The air intake assembly 71 is designed with a housing 712, realizing a modular design of the air intake assembly 71, which facilitates installation with the housing body 101. Specifically, the baffle 711 and the housing 712 can be assembled as one unit, and then assembled together with the housing body 101.

[0058] The air inlet 7123 on the cover 712 has a first limiting surface 7123a and a second limiting surface 7123b that are opposite each other along the movement direction of the baffle 711. The upper limiting protrusion 7111 of the baffle 711 extends into the air inlet 7123. When the baffle 711 moves to open or close the air inlet 7123, the limiting protrusion 7111 moves between the first limiting surface 7123a and the second limiting surface 7123b. That is, under the constraint of the cooperation between the limiting protrusion 7111 and the first limiting surface 7123a and the second limiting surface 7123b, the baffle 711 can only move within a specific range and will not move excessively.

[0059] Specifically, when the limiting protrusion 7111 abuts against the first limiting surface 7123a, the baffle 711 opens the air inlet 7123; when the limiting protrusion 7111 abuts against the second limiting surface 7123b, the baffle 711 closes the air inlet 7123. Thus, when the baffle 711 rotates within a specific constrained range, it can switch between opening and closing the air inlet 7123, meeting usage requirements.

[0060] In some embodiments, the baffle 711 can move relative to the housing 712 in a straight line to open or close the air inlet 7123. At this time, the first limiting surface 7123a and the second limiting surface 7123b are arranged opposite each other in the straight line.

[0061] In other embodiments, the baffle 711 can move relative to the housing 712 in an arcuate direction to open or close the air inlet 7123. That is, the baffle 711 rotates relative to the housing 712 to open or close the air inlet 7123. In this case, the first limiting surface 7123a and the second limiting surface 7123b are arranged opposite each other around the rotation axis of the baffle 711.

[0062] It should be noted that the maximum opening degree of the air inlet 7123 is determined by the distance between the first limiting surface 7123a and the second limiting surface 7123b in the direction of movement of the baffle 711. In actual manufacturing, the distance between the first limiting surface 7123a and the second limiting surface 7123b in the direction of movement of the baffle 711 can be designed according to the requirements so that when the baffle 711 opens the air inlet 7123 to the maximum extent, the airflow entering the containment cavity through the air inlet 7123 is sufficient and can quickly carry out the refrigerant leaking from the containment cavity.

[0063] The housing 712 includes a first housing plate 7124, which has an air inlet 7123. A baffle 711 is movable relative to the first housing plate 7124 to open or close the air inlet 7123. The baffle 711 can be fitted against the first housing plate 7124 and can rotate relative to the first housing plate 7124 about a first axis to open or close the air inlet 7123. The first axis is perpendicular to the first housing plate 7124. Opening or closing the air inlet 7123 by rotation, compared to moving it, is advantageous for compressing the dimensions of the air intake assembly 71 in the first axial direction. The first housing plate 7124 can be connected to a rotating shaft, and the baffle 711 can be fitted onto the rotating shaft and rotate about it.

[0064] The casing 712 also includes a plurality of second shell plates 7125, which are located outside the casing body 101 and surround the air inlet. A first shell plate 7124 is located on the side of the plurality of second shell plates 7125 away from the casing body 101 and connects the plurality of second shell plates 7125. The plurality of second shell plates 7125 and the first shell plate 7124 enclose an inner cavity 7121. That is, the first shell plate 7124 is arranged opposite to the air inlet. Thus, the air inlet 7123 is arranged on the first shell plate 7124, and the air inlet 7123 is arranged opposite to the air inlet, optimizing the ventilation path and making it easier for the airflow entering the casing 712 through the air inlet 7123 to reach the air inlet, and then enter the receiving cavity of the casing body 101 through the air inlet.

[0065] The cover 712 also includes multiple flanges 7126, which are located on the side of the multiple second shell plates 7125 away from the first shell plate 7124. One end of each flange 7126 is connected to a corresponding second shell plate 7125, and the other end of each flange 7126 extends away from the inner cavity 7121. The flanges 7126 are connected to the shell body 101. When the cover 712 is installed on the shell body 101, the flanges 7126 can be made to fit approximately against the shell body 101, making the connection operation between the two more convenient. The flanges 7126 and the shell body 101 can be detachably connected by means of screws, snap-fit, etc., and this is not limited.

[0066] The operation of opening or closing the air inlet 7123 using the aforementioned baffle 711 can be done manually or electrically, and there is no limitation on the operation.

[0067] In this embodiment, the air inlet assembly 71 further includes a drive component 713. The drive component 713 includes a fixed part 7131 and a movable part 7132 that are movable relative to each other. The fixed part 7131 is fixed relative to the cover 712, and the movable part 7132 is connected to the baffle 711 and is used to drive the baffle 711 to open or close the air inlet 7123. That is, the drive component 713 automatically drives the baffle 711 to open or close the air inlet 7123 without manual intervention, saving labor costs.

[0068] In some embodiments, the drive member 713 stops when the upper limit protrusion 7111 of the baffle 711 contacts the first limiting surface 7123a / second limiting surface 7123b. Since the baffle 711 has already moved to open / close the air inlet 7123 when the limiting protrusion 7111 contacts the first limiting surface 7123a / second limiting surface 7123b, stopping the drive member 713 at this time allows the baffle 711 to stop at the position of opening / closing the air inlet 7123, which is beneficial for the baffle 711 to be in the position of opening / closing the air inlet 7123 more stably. In other embodiments, when the upper limit protrusion 7111 of the baffle 711 contacts the first limiting surface 7123a / second limiting surface 7123b, the drive member 713 continues to run for a first preset time, so that the baffle 711 continues to open / close the air inlet 7123 before stopping. When the limiting protrusion 7111 contacts the first limiting surface 7123a / second limiting surface 7123b, the baffle 711 has already moved to open / close the air inlet 7123. At this time, the driving component 713 continues to run for a first preset time so that the baffle 711 continues to open / close the air inlet 7123, which can make the opening / closing of the air inlet 7123 by the baffle 711 more thorough. The first preset time can be flexibly designed according to actual needs and is not limited thereto.

[0069] If the baffle 711 rotates to open or close the air inlet 7123, the driving component 713 may include a motor, the fixed part 7131 may correspond to the base of the motor, and the movable part 7132 may correspond to the output shaft of the motor. If the baffle 711 moves to open or close the air inlet 7123, the driving component 713 may include an electric push rod, the fixed part 7131 may correspond to the base of the electric push rod, and the movable part 7132 may correspond to the output shaft of the electric push rod.

[0070] If the baffle 711 rotates relative to the housing 712 to open or close the air inlet 7123, the air intake assembly 71 also includes a connector 714. The connector 714 has a first connecting position 7141 and a plurality of second connecting positions 7142. The first connecting position 7141 extends along a first axis, and the plurality of second connecting positions 7142 are spaced apart on the outer periphery of the first connecting position 7141. The first connecting position 7141 connects to the movable part 7132, and the plurality of second connecting positions 7142 connect to the baffle 711. The connector 714 is designed to include a plurality of second connecting positions 7142, which helps to improve the smoothness of the baffle 711 rotating to open or close the air inlet 7123. The plurality of connecting positions 7142 can be evenly spaced on the outer periphery of the first connecting position 7141, and this is not limited.

[0071] The air intake assembly 71 also includes a mounting bracket 715, which is located in the inner cavity 7121 and connected to the cover 712. The fixing part 7131 is connected to the mounting bracket 715. The mounting bracket 715 facilitates the installation and fixing of the drive component 713.

[0072] The mounting bracket 715 includes a first mounting plate 7151, which is opposite to and spaced apart from the baffle 711. The fixing part 7131 of the drive member 713 can be fixed to the first mounting plate 7151.

[0073] The mounting bracket 715 also includes a second mounting plate 7152 and a third mounting plate 7153. The second mounting plate 7152 is connected to the first mounting plate 7151 and extends towards the baffle 711. The third mounting plate 7153 is connected to the side of the second mounting plate 7152 away from the first mounting plate 7151 and extends in a direction parallel to the baffle 711. The third mounting plate 7153 is fitted and connected to the cover 712. In this way, the third mounting plate 7153 can be directly fitted and connected to the first shell plate 7124 of the cover 712 where the air inlet 7123 is provided, and the connection between the mounting bracket 715 and the cover 712 can be directly realized on the outside of the cover 712, making the connection more convenient.

[0074] The air inlet assembly 71 also includes an elastic element 716, which is sleeved on the fixing part 7131 and located between the first fixing plate 7151 and the baffle 711. The elastic element 716 can provide a force to the baffle 711 to move towards the first shell plate 7124, so that the baffle 711 is tightly attached to the first shell plate 7124, thereby improving the sealing performance of the baffle 711 when closing the air inlet 7123.

[0075] The ventilation structure 70 includes an air outlet assembly 72, which includes an air outlet duct 721. The air outlet duct 721 is located outside and connected to the housing body 101, and is connected to an air outlet. The air outlet duct 721 is used to connect an external exhaust device. Thus, when it is necessary to clean the refrigerant leaking inside the containment cavity, the exhaust device can be turned on, drawing airflow through the air inlet into the containment cavity. The exhaust device is on during ventilation and can be turned off during non-ventilation to reduce energy consumption.

[0076] The ventilation structure 70 can be periodically kept in a ventilation state to clean the refrigerant leaking inside the shell body 101. Alternatively, a refrigerant switching device can be provided. The shell 1 also includes a refrigerant detector (not shown in the figure). The refrigerant detector is located in the containment cavity and is used to detect the refrigerant concentration inside the containment cavity. When the refrigerant concentration detected by the refrigerant detector exceeds a first preset concentration, the ventilation structure 70 is in a ventilation state. That is, the ventilation structure 70 is kept in a ventilation state or a non-ventilation state according to the concentration of refrigerant leaking inside the shell body 101, which can better clean the refrigerant.

[0077] The refrigerant switching device housing 1 also includes a controller (not shown in the figure). The controller is electrically connected to the refrigerant detector and the ventilation structure 70, and is used to control the ventilation structure 70 to be in a ventilation state when the refrigerant concentration detected by the refrigerant detector exceeds a first preset concentration. That is, the controller automatically controls the ventilation structure 70 to be in a ventilation state without manual intervention, saving labor costs. When the refrigerant concentration detected by the refrigerant detector is lower than a second preset concentration, the ventilation structure 70 is controlled to be in a non-ventilation state.

[0078] The aforementioned controller electrically connects to the ventilation structure 70, which can be a controller electrically connects to the drive unit 713 and the exhaust device. When the refrigerant concentration detected by the refrigerant detector exceeds a first preset concentration, the drive unit 713 drives the baffle 711 to open the air inlet 7123 and controls the exhaust device to start, so as to discharge the refrigerant inside the housing 101. When the refrigerant concentration detected by the refrigerant detector is lower than a second preset concentration, the drive unit 713 drives the baffle 711 to close the air inlet 7123 and controls the exhaust device to shut down.

[0079] Example 2 The difference between this embodiment and Embodiment 1 is as follows: (See attached document) Figure 9 The air inlet and the expansion interface pipe assembly 204 are located on the same side of the refrigerant switching device housing 1, and the air outlet and the load interface pipe assembly 203 are located on the same side of the refrigerant switching device housing 1. For example, the air inlet is located on the fourth side 1d of the refrigerant switching device housing 1, and the air outlet is located on the second side 1b of the refrigerant switching device housing 1.

[0080] The mounting positions (e.g., screw mounting positions) of the housing body 101 at the air inlet and air outlet are roughly the same, so that the air inlet assembly 71 and the air outlet assembly 72 can be changed according to needs.

[0081] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" means at least two, for example, two, three, four, etc. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0082] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A refrigerant switching device housing characterized by comprising: include: A shell body, the shell body forming a receiving cavity, the shell body being provided with an air inlet and an air outlet communicating with the receiving cavity; and, A ventilation structure is connected to the shell body. The ventilation structure has a ventilation state, in which airflow enters the receiving cavity through the air inlet and exits the receiving cavity through the air outlet.

2. The refrigerant switching device housing according to claim 1, characterized by The ventilation structure includes: An air intake assembly is located at the air inlet and connected to the housing body. In the ventilation state, the air intake assembly opens the air inlet.

3. The refrigerant switching device housing according to claim 2, characterized by The air intake assembly includes: A housing, located outside and connected to the housing body, the housing having an inner cavity, and provided with a communication port and an air inlet communicating with the inner cavity, the communication port communicating with the air inlet; and, The baffle opens the air inlet during the ventilation state.

4. The refrigerant switching device housing according to claim 3, characterized by The air inlet has a first limiting surface and a second limiting surface that are opposite each other along the movement direction of the baffle. The baffle is connected to a limiting protrusion that extends into the air inlet. When the baffle opens or closes the air inlet, the limiting protrusion moves between the first limiting surface and the second limiting surface. When the limiting protrusion abuts against the first limiting surface, the baffle opens the air inlet; when the limiting protrusion abuts against the second limiting surface, the baffle closes the air inlet.

5. The refrigerant switching device housing according to claim 3, wherein The housing includes: A first shell plate is provided with the air inlet. A baffle is fitted to the first shell plate and can rotate relative to the first shell plate around a first axis to open or close the air inlet. The first axis is perpendicular to the first shell plate.

6. The refrigerant switching device housing according to claim 5, wherein The housing also includes: A plurality of second shell plates are located outside the shell body and surround the air inlet; a first shell plate is located on the side of the plurality of second shell plates away from the shell body and connects to the plurality of second shell plates, and the plurality of second shell plates and the first shell plate enclose each other to form the inner cavity.

7. The refrigerant switching device housing according to claim 6, wherein The housing also includes: Multiple flanges are located on the side of the multiple second shell plates away from the first shell plate. One end of each flange is connected to one of the multiple second shell plates, and the other end of each flange extends away from the inner cavity. The multiple flanges are connected to the shell body.

8. The housing of the refrigerant switching device according to any one of claims 3 to 7, characterized in that, The air intake assembly also includes: The driving component includes a fixed part and a movable part that can move relative to each other. The fixed part is fixed relative to the cover, and the movable part is connected to the baffle and is used to drive the baffle to open or close the air inlet.

9. The refrigerant switching device housing according to claim 8, characterized by The air intake assembly also includes: A connector having a first connection position and a plurality of second connection positions, the first connection position extending along a first axis, the plurality of second connection positions being spaced apart on the outer periphery of the first connection position, the first connection position being connected to the movable part, the plurality of second connection positions being connected to the baffle, the movable part being used to drive the baffle to rotate around the first axis to open or close the air inlet.

10. The refrigerant switching device housing according to claim 8, characterized by The air intake assembly also includes: A fixing frame is located in the inner cavity and connected to the cover, and the fixing part is connected to the fixing frame.

11. The refrigerant switching device housing according to claim 10, wherein The air intake assembly also includes: The elastic element is provided, and the fixing frame includes a first fixing plate, which is opposite to and spaced apart from the baffle. The elastic element is sleeved on the fixing part and located between the first fixing plate and the baffle.

12. The refrigerant switching device housing according to claim 10, wherein The fixing frame includes: A first fixing plate is provided opposite to and spaced apart from the baffle. A second fixing plate, the second fixing plate being connected to the first fixing plate and extending toward the baffle; and... The third fixing plate is connected to the side of the second fixing plate away from the first fixing plate. The third fixing plate extends in a direction parallel to the baffle and is fitted and connected to the cover.

13. The refrigerant switching device housing according to claim 1, characterized by The ventilation structure includes: An air outlet assembly includes an air outlet pipe located outside and connected to the housing body. The air outlet pipe is connected to the air outlet and is used to connect an external exhaust device. The exhaust device is turned on during the ventilation state.

14. The refrigerant switching device housing according to claim 1, characterized by The refrigerant switching device housing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. One of the air inlet and the air outlet is located on the second side, and the other is located on the fourth side. Along the second direction, the air inlet and the air outlet are located at opposite ends of the refrigerant switching device housing. The first direction, the second direction, and the height direction of the refrigerant switching device housing are perpendicular to each other.

15. The refrigerant switching device housing according to claim 1, characterized by Also includes: A refrigerant detector is located in the containment cavity; A controller, electrically connected to the refrigerant detector and the ventilation structure, is used to control the ventilation structure to be in the ventilation state when the refrigerant concentration detected by the refrigerant detector exceeds a first preset concentration.

16. A refrigerant switching device characterized by comprising: include: Housing of the refrigerant switching device as described in any one of claims 1 to 15; as well as, The refrigerant switching pipeline includes a pipeline body, a heat source interface pipe group connected to the pipeline body, and multiple load interface pipe groups connected to the pipeline body. The pipeline body is located inside the housing of the refrigerant switching device. The heat source interface pipe group and the multiple load interface pipe groups pass through the housing of the refrigerant switching device and are located outside the housing of the refrigerant switching device.

17. The refrigerant switching device according to claim 16, wherein The refrigerant switching pipeline also includes an expansion interface pipe assembly connected to the main body of the pipeline. The expansion interface pipe assembly passes through the housing of the refrigerant switching device and is located outside the housing of the refrigerant switching device.

18. The refrigerant switching device according to claim 17, wherein The refrigerant switching device housing has a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. The load interface pipe assembly is located on the second side of the refrigerant switching device housing, the heat source interface pipe assembly is located on the third side of the refrigerant switching device housing, and the expansion interface pipe assembly is located on the fourth side of the refrigerant switching device housing.

19. The refrigerant switching device according to claim 18, wherein One of the load interface pipe group and the expansion interface pipe group is located on the same side of the refrigerant switching device housing as the air inlet, and the other is located on the same side of the refrigerant switching device housing as the air outlet.

20. A heating and ventilation device, characterized by include: The refrigerant switching device according to any one of claims 16 to 19; A heat source, wherein the heat source is connected to the heat source interface pipe assembly; as well as, Multiple loads, each load being connected to a corresponding load interface group.

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