Heat pump apparatus

Abstract

The utility model discloses heat pump equipment. The heat pump equipment comprises a box body, a bracket, an air duct assembly, a first sealing element and a second sealing element, according to the heat pump equipment, the inner cavity of the box body is divided into the air inlet cavity and the air outlet cavity through the support, the air duct assembly is slidably connected into the air outlet cavity, and the drawable function of the air duct assembly and the box body can be achieved; when the air duct assembly is located in the air outlet cavity, the air inlet of the air duct is communicated with the first air guide opening, the air outlet of the air duct is communicated with the second air guide opening, the first sealing piece is arranged around the air inlet, the first sealing piece can seal a gap between the air inlet and the first air guide opening, and the second sealing piece is arranged around the air outlet. The second sealing piece can seal the gap between the air outlet and the second air guide opening, so that the sealing performance of matching of the air duct assembly and the support is effectively improved, the sealing effect is good, the situation that air leakage is likely to be generated due to the too large gap is reduced, and the condensation problem of heat pump equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of hot water heating equipment, and in particular to a heat pump device. Background Technology

[0002] To facilitate fan maintenance, heat pump equipment uses a pull-out duct assembly. When the fan is damaged, the duct assembly can be pulled out for inspection without disassembling the entire unit. Because the pulling process needs to be smooth, a relatively large gap is often designed between the duct assembly and the internal structure of the heat pump equipment. However, this results in poor sealing, making it prone to air leakage and condensation problems. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat pump device that effectively improves the sealing performance of the duct assembly and reduces problems such as condensation.

[0004] A heat pump device according to a first aspect of the present invention includes a housing, a support, an air duct assembly, a first sealing element, and a second sealing element. The support is disposed within the inner cavity of the housing and divides the inner cavity into an air inlet cavity and an air outlet cavity. The support has a first air guide port and a second air guide port. The first air guide port communicates with the air inlet cavity, and the second air guide port communicates with the exhaust port of the housing. The air duct assembly is slidably connected within the air outlet cavity. The air duct assembly includes an air duct shell and a fan disposed within the air duct shell. The air duct shell has a communicating air inlet and an air outlet. The air inlet communicates with the first air guide port, and the air outlet communicates with the second air guide port. The first sealing element is disposed around the air inlet to seal the gap between the air inlet and the first air guide port. The second sealing element is disposed around the air outlet to seal the gap between the air outlet and the second air guide port.

[0005] The heat pump device according to the embodiments of this utility model has at least the following beneficial effects:

[0006] The heat pump unit uses a bracket to divide the inner cavity of the housing into an air inlet chamber and an air outlet chamber. The air duct assembly uses an air duct shell to construct the air outlet duct, and the fan is installed inside the air duct. The air duct assembly is slidably connected in the air outlet chamber, enabling the air duct assembly and the housing to be pulled out. When the air duct assembly is in the air outlet chamber, the air inlet of the air duct is connected to the first air guide port, and the air outlet is connected to the second air guide port. The fan drives air from the air inlet chamber through the first air guide port and the air inlet into the air duct, and then exhausts it to the exhaust port through the air outlet and the second air guide port. A first sealing element is set around the air inlet to seal the gap between the air inlet and the first air guide port, and a second sealing element is set around the air outlet to seal the gap between the air outlet and the second air guide port. This effectively improves the sealing performance of the air duct assembly and the bracket, resulting in excellent sealing performance and reducing the possibility of air leakage due to excessive gaps, thus reducing the problem of condensation in the heat pump unit.

[0007] According to some embodiments of the present invention, the bracket includes a partition plate and an air guide. The partition plate is located between the air inlet chamber and the air outlet chamber. The air guide is disposed in the air outlet chamber and connected to the partition plate. The air guide is located between the air duct assembly and the exhaust port. The first air guide port is disposed in the partition plate, and the second air guide port is disposed in the air guide.

[0008] According to some embodiments of the present invention, the air duct shell is a volute, the air inlet is located on one side of the volute along its axial direction and faces the middle partition, the middle partition is provided with a first annular groove on the side facing the air outlet, the first annular groove is arranged circumferentially along the first air guide, the first sealing member is embedded in the first annular groove, the first sealing member protrudes from the first annular groove and can abut against the side of the volute.

[0009] According to some embodiments of the present invention, the first sealing element is a first sealing ring, the depth of the first annular groove is greater than or equal to 2 / 3 of the thickness of the first sealing ring, and the maximum gap between the volute and the middle partition is less than or equal to 1 / 3 of the thickness of the first sealing ring.

[0010] According to some embodiments of the present invention, the air duct shell is a volute, the axial direction of the volute is arranged in a direction perpendicular to the middle partition, the end face of the air guide facing the air outlet is provided with a second annular groove, the second annular groove is arranged circumferentially along the second air guide, the second sealing member is embedded in the second annular groove, the second sealing member protrudes from the second annular groove and can abut against the end face of the air outlet.

[0011] According to some embodiments of the present invention, the second sealing element is a second sealing ring, the depth of the second annular groove is greater than or equal to 2 / 3 of the thickness of the second sealing ring, and the maximum gap between the end face of the air outlet and the end face of the second air guide is less than or equal to 1 / 3 of the thickness of the second sealing ring.

[0012] According to some embodiments of this utility model, the partition plate and the air guide are integrally formed.

[0013] According to some embodiments of the present invention, the first sealing element and the second sealing element are respectively sealing rings with hollow structures and connected to the bracket. The end face of the sealing ring on one side along its axial direction is a plane and the end face on the other side is an arc-shaped surface. The plane of the sealing ring is used to connect with the bracket, and the arc-shaped surface of the sealing ring is used to abut and seal with the air duct shell.

[0014] According to some embodiments of the present invention, the surface of the bracket is provided with an annular groove for installing the sealing ring, and the bottom wall of the annular groove is connected to the plane of the sealing ring by adhesive bonding.

[0015] According to some embodiments of the present invention, the air duct shell is a foam component, a sheet metal component is provided on the outer side of the foam component, the sheet metal component is connected to the fan, a guide rail is provided inside the housing, and the sheet metal component is slidably connected to the guide rail.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the internal assembly structure of a heat pump device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the air duct assembly and the bracket in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of an air duct assembly according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention;

[0022] Figure 5 This is an exploded structural diagram of the bracket, the first sealing element, and the second sealing element according to an embodiment of the present invention;

[0023] Figure 6 This is a longitudinal cross-sectional structural diagram of an air duct assembly according to an embodiment of the present invention;

[0024] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0025] Figure 8 for Figure 6 A magnified structural diagram at point B in the middle.

[0026] Icon labels:

[0027] Air duct housing 100; volute housing 101; air duct 110; air inlet 120; air outlet 130; first side surface 140;

[0028] Support plate 200; guide flange 210;

[0029] Fan 300; Motor 310; Impeller 320;

[0030] Support bracket 400; upper guide rail 401; middle partition 410; first air vent 411; first annular groove 412; air guide component 420; second air vent 421; second annular groove 422; air guide channel 423;

[0031] First sealing element 500; First sealing ring 510; First flat surface 511; First arcuate surface 512;

[0032] Second seal 600; second sealing ring 610; second flat surface 611; second arcuate surface 612;

[0033] Heat pump equipment 1000;

[0034] Box body 2000; air inlet 2100; exhaust outlet 2200; chassis 2300; lower guide rail 2310;

[0035] Air duct assembly 3000;

[0036] Waterway components 4000;

[0037] Evaporator 5000. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the directional descriptions, such as front, back, up, down, left, right, etc., are based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0041] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0042] Reference Figure 1 As shown, this utility model proposes a duct assembly 3000, which is applied to a heat pump device 1000. For ease of understanding, the embodiments of the heat pump device 1000 of this utility model are described first.

[0043] The heat pump device 1000 of this utility model embodiment includes a housing 2000, a heat pump assembly, a water circuit assembly 4000, and an air duct assembly 3000. The housing 2000 has an inner cavity, and the heat pump assembly, water circuit assembly 4000, and air duct assembly 3000 are installed in the inner cavity. The heat pump assembly includes a compressor, a first heat exchanger, a second heat exchanger, and a throttling device. A bracket 400 is provided inside the housing 2000, which divides the inner cavity of the housing 2000 into an air inlet cavity and an air outlet cavity. The compressor, the first heat exchanger, the second heat exchanger, the throttling device, and the water circuit assembly 4000 are all located in the air inlet cavity. The first heat exchanger is vertically arranged along the height of the housing 2000 and connected to the side of the bracket 400 facing away from the air outlet cavity. When the airflow enters the air outlet cavity from the air inlet cavity, it passes through the first evaporator 5000 for heat exchange. The air duct assembly 3000 is located in the air outlet cavity.

[0044] In some embodiments, the first heat exchanger is an evaporator 5000, and the second heat exchanger is a plate heat exchanger. The plate heat exchanger includes a refrigerant flow path and a water flow path. The evaporator 5000, the refrigerant flow path of the plate heat exchanger, the throttling component, and the compressor are connected to form a refrigerant circulation loop for refrigerant circulation. The water circuit assembly 4000 includes a water pump, an inlet pipe, an outlet pipe, and a valve body. The inlet pipe and the outlet pipe are respectively connected to the water flow path. The water pump can be installed on either the inlet pipe or the outlet pipe to form a water supply path.

[0045] Reference Figure 1 As shown, the top of the housing 2000 is provided with an air inlet 2100 and an exhaust outlet 2200. The air inlet 2100 is connected to the air inlet cavity, and the exhaust outlet 2200 is connected to the air outlet cavity. The air duct assembly 3000 includes a fan 300. The fan 300 is used to draw outdoor air into the air inlet cavity through the air inlet 2100 and blow it towards the evaporator 5000. After the air exchanges heat with the evaporator 5000, it enters the air duct 110 and is discharged through the exhaust outlet 2200.

[0046] During operation, the refrigerant output from the compressor passes through the plate heat exchanger, where it exchanges heat with water via the refrigerant flow path. After throttling, it enters the evaporator 5000, where it exchanges heat with outdoor air before returning to the compressor for the next cycle. A water pump drives chilled water into the water flow path of the plate heat exchanger, allowing the water to exchange heat with the refrigerant. Using the outdoor air as a heat source, heat is extracted through the heat exchange process to produce hot water.

[0047] The heat pump device 1000 of this utility model embodiment can provide hot water through the outlet pipe for supplying domestic hot water and heating hot water. Alternatively, the outlet pipe can be connected to a water tank to store the hot water for user use.

[0048] The above is an example of the heat pump equipment 1000. The following is a specific example illustrating the structure of the air duct assembly 3000 in the heat pump equipment 1000.

[0049] Reference Figure 2 and Figure 3 As shown, the air duct assembly 3000 includes an air duct housing 100 and a fan 300. The air duct housing 100 is specifically a volute 101, which contains an air duct 110. An air inlet 120 is provided on one side of the volute 101 along its axial direction, and an air outlet 130 is provided on the upper side of the volute 101. The air inlet 120 and the air outlet 130 are respectively connected to the air duct 110. A support plate 200 is provided on the outer side of the volute 101, and the fan 300 is installed in the air duct 110 and connected to the support plate 200.

[0050] Reference Figure 1 As shown, in this embodiment, the volute 101 is mounted vertically on the support plate 200, i.e., the air outlet 130 faces upwards, and the support plate 200 is connected to the side of the volute 101 facing away from the air inlet 120. When the air duct assembly 3000 is installed in the air outlet cavity, the air inlet 120 faces the evaporator 5000, the evaporator 5000 is located between the air inlet 2100 and the air inlet 120, and the air outlet 130 is connected to the exhaust port 2200.

[0051] In this embodiment, the volute 101 is made of polyurethane foam insulation material, which has a low thermal conductivity and can provide insulation. The support plate 200 is made of metal, and can be a sheet metal part processed from a metal plate, giving the support plate 200 sufficient strength to stably support the fan 300 and the volute 101. The hardness of the metal material is greater than that of the foam part, so the support plate 200 protects the volute 101.

[0052] Understandably, when the heat pump equipment 1000 is used in low-temperature environments, the fan 300 will draw cold outdoor air into the air duct 110 during operation. The temperature outside the air duct 110 is close to the indoor ambient temperature. Since the volute 101 plays a role in heat insulation, it can effectively reduce the heat transfer of the air duct 110, making it less likely for condensation to form on the volute 101 and reducing the risk of water leakage in the heat pump equipment 1000.

[0053] Of course, the material of the volute 101 is not limited to foam material. In some embodiments, the volute 101 can also be made of heat-insulating materials such as vacuum insulation panels. In addition, the air duct shell 100 is not limited to the volute 101. The air duct shell 100 can also be an axial flow air duct component or other forms of air duct structure.

[0054] Reference Figure 2 As shown, a guide rail is installed inside the housing 2000. The guide rail is located inside the air outlet cavity and is connected to the side plate or chassis 2300 of the housing 2000. The guide rail is positioned with its opening facing the inside of the air outlet cavity. The support plate 200 is provided with a guide part, which is a guide structure that matches the guide rail. Specifically, it can be a guide flange 210, a guide block, or other structures, for example... Figure 2 In the illustrated embodiment, the bottom end of the support plate 200 is provided with a guide flange 210 that mates with the guide rail. The support plate 200 is slidably connected to the guide rail via the guide portion, allowing it to be moved into or out of the air outlet cavity along the guide rail after the air duct assembly 3000 is installed, facilitating maintenance of the fan 300. It should be noted that after the air duct assembly 3000 is moved into the air outlet cavity, the housing portion can be fixed to the housing 2000 using screws or snap-fit ​​connections to achieve positioning of the air duct assembly 3000.

[0055] When the fan 300 needs to be inspected, after opening the panel of the housing 2000, the screws can be removed to move the air duct assembly 3000 out of the air outlet along the guide rail, so that the air duct assembly 3000 can be quickly inspected and inspected, and the air duct 110 can be cleaned.

[0056] Reference Figure 2 and Figure 4As shown, the bracket 400 is provided with a first air guide 411 and a second air guide 421. The first air guide 411 communicates with the air inlet cavity, and the second air guide 421 communicates with the exhaust port 2200. The bracket 400 is installed inside the housing 2000. The bottom of the bracket 400 is fixedly connected to the chassis 2300, and the top of the bracket 400 is connected to the top of the housing 2000, dividing the inner cavity of the housing 2000 into an air inlet cavity and an air outlet cavity. The first air guide 411 connects the air inlet cavity and the air outlet cavity. When the air duct assembly 3000 slides into the air outlet cavity, the air inlet 120 is positioned opposite to the first air guide 411, and the air inlet 120 communicates with the air inlet cavity through the first air guide 411. The air outlet 130 is positioned opposite to the second air guide 421, and the air outlet 130 communicates with the exhaust port 2200 through the second air guide 421.

[0057] It is understandable that, since the airflow in the air inlet cavity and the air duct 110 is cold air, and the temperature outside the air duct 110 is close to the indoor ambient temperature, condensation is easily generated when air leakage occurs, which can lead to water leakage in the heat pump equipment 1000.

[0058] To ensure a high level of sealing between the duct assembly 3000 and the bracket 400, a first sealing element 500 and a second sealing element 600 are added between the volute 101 and the bracket 400. The first sealing element 500 surrounds the air inlet 120 and seals the gap between the air inlet 120 and the first air guide 411, reducing the risk of leakage between the air inlet 120 and the first air guide 411. The second sealing element 600 surrounds the air outlet 130 and seals the gap between the air outlet 130 and the bracket 400, reducing the risk of leakage between the air outlet 130 and the second air guide 421. This effectively improves the sealing performance of the duct assembly 3000 and the bracket 400 and reduces the possibility of air leakage due to excessive gaps.

[0059] Reference Figure 4 and Figure 5 As shown, the bracket 400 includes a partition plate 410 and an air guide 420. The partition plate 410 is located between the air inlet chamber and the air outlet chamber. The air guide 420 is disposed in the air outlet chamber and connected to the partition plate 410. The air guide 420 is located between the air outlet 130 and the exhaust port 2200. The evaporator 5000 is installed on the right side of the partition plate 410. The partition plate 410 is provided with a first air guide port 411. The first air guide port 411 is a round hole located in the middle of the partition plate 410. The size of the first air guide port 411 is close to the size of the air inlet 120, ensuring that the airflow can smoothly pass through the first air guide port 411 and the air inlet 120 after passing through the evaporator 5000 and enter the air duct 110.

[0060] In this embodiment, the air guide 420 is a structural component used to connect the air outlet 130 and the exhaust port 2200. An air guide channel 423 is formed inside the air guide 420 to guide the air. The second air guide port 421 is located at the air inlet end of the air guide channel 423. The air guide channel 423 is arranged in a vertical direction. One end of the air guide channel 423 is connected to the air outlet 130 through the second air guide port 421, and the other end is connected to the exhaust port 2200.

[0061] To match the volute 101 with the exhaust port 2200, in this embodiment, the second air guide 421 is square, matching the air outlet 130, and the air outlet end of the air guide channel 423 is circular, matching the air guide channel 423 with the exhaust port 2200. This is only an example; the specific shape and size of the air guide 420 can be set according to the air outlet 130, the exhaust port 2200, and the distance between the air outlet 130 and the exhaust port 2200.

[0062] Reference Figure 2 As shown, the air guide 420 is located above the air duct assembly 3000. In some embodiments, an upper guide rail 401 can be provided at the bottom of the air guide 420, and the upper end of the support plate 200 can be slidably connected to the upper guide rail 401. The chassis 2300 is provided with a lower guide rail 2310, and the lower end of the support plate 200 can be slidably connected to the lower guide rail 2310. In this way, the upper guide rail 401 and the lower guide rail 2310 cooperate to guide the air duct assembly 3000, thereby improving structural stability. In the embodiments, both the air guide 420 and the partition plate 410 are plastic parts and are integrally injection molded, which effectively improves the structural strength and meets the strength requirements of the bracket 400 supporting the evaporator 5000 and the air duct assembly 3000.

[0063] It should be noted that the first sealing element 500 can be installed on the side of the volute 101 facing the partition plate 410, or on the side of the partition plate 410 facing the volute 101. For example, the first sealing element 500 is connected to the surface of the volute 101 or the partition plate 410, so that the first sealing element 500 can abut against the volute 101 and the partition plate 410 respectively, ensuring that the first sealing element 500 seals the gap between the volute 101 and the partition plate 410. Furthermore, the second sealing element 600 can be installed at the air outlet 130 of the volute 101, or on the side of the air guide 420 facing the volute 101, ensuring that the second sealing element 600 seals the gap between the volute 101 and the air guide 420.

[0064] Reference Figure 5As shown, in some embodiments, the first sealing element 500 is a first sealing ring 510, which is circular. The surface of the partition plate 410 is provided with a first annular groove 412. The first sealing ring 510 is arranged circumferentially along the first air guide 411. The first annular groove 412 is circular and matches the first sealing ring 510. The first sealing ring 510 is embedded in the first annular groove 412. The first sealing ring 510 and the first annular groove 412 can be fixed by interference fit, adhesive, or other means. The first annular groove 412 plays an effective limiting role for the first sealing ring 510.

[0065] Reference Figure 6 As shown, it can be understood that a portion of the first sealing ring 510 is connected within the first annular groove 412, while another portion protrudes from the first annular groove 412, ensuring that the first sealing ring 510 can abut against the first side surface 140 of the volute 101. It should be noted that the diameter of the first annular groove 412 is larger than the diameter of the air inlet 120; that is, the diameter of the first sealing ring 510 is larger than the diameter of the air inlet 120, ensuring that the first sealing ring 510 can abut against the surface of the volute 101 and surround the air inlet 120, forming an effective sealing structure.

[0066] Reference Figure 7 As shown, specifically, the first sealing ring 510 has a hollow structure. The end face of the first sealing ring 510 facing the bottom wall of the first annular groove 412 is a first flat surface 511, and the end face of the first sealing ring 510 facing the volute 101 is a first arc-shaped surface 512. The first sealing ring 510 is connected to the bottom wall of the first annular groove 412 through the first flat surface 511, resulting in a tighter fit and a more stable connection structure. Because the first sealing ring 510 has a hollow internal structure, when it abuts against the first side surface 140 of the volute 101 through the first arc-shaped surface 512, the first sealing ring 510 can be deformed under pressure, increasing the contact area between the first arc-shaped surface 512 and the surface of the volute 101, resulting in a tighter fit and a better sealing effect.

[0067] In some embodiments, the first plane 511 of the first sealing ring 510 is connected to the bottom wall of the first annular groove 412 by adhesive bonding. Specifically, adhesive can be applied to the bottom wall of the first annular groove 412. When the first sealing ring 510 is placed in the first annular groove 412, the first sealing ring 510 is bonded and fixed by adhesive bonding, making the first sealing ring 510 less likely to fall off and improving reliability.

[0068] Reference Figure 7As shown, in this embodiment, the thickness of the first sealing ring 510 is H1, and the depth of the first annular groove 412 is set to be greater than or equal to 2 / 3 of H1. The thickness of the first sealing ring 510 is the thickness of the first sealing ring 510 in its normal state (without deformation). That is, the depth of the first annular groove 412 is greater than or equal to 2 / 3 of the thickness of the first sealing ring 510, so that the first annular groove 412 has sufficient depth to accommodate the first sealing ring 510, further improving the stability of the assembly of the first sealing ring 510 and making the first sealing ring 510 less likely to fall off. It can be understood that when the depth of the first annular groove 412 is less than 2 / 3 of H1, it means that the portion of the first sealing ring 510 located inside the first annular groove 412 is too small, while the portion protruding outside the first annular groove 412 is too large. Since the volute 101 of the air duct assembly 3000 will come into contact with the first sealing ring 510 during the pulling process, friction will be generated. Under the action of friction, the first sealing ring 510 is prone to fall off.

[0069] Furthermore, it is understood that when the depth of the first annular groove 412 is set to be greater than or equal to 2 / 3 of H1, the thickness of the first sealing ring 510 protruding from the first annular groove 412 is less than or equal to 1 / 3 of H1. In order to ensure that the first sealing ring 510 and the surface of the volute 101 abut against each other to form a stable sealing structure, in this embodiment, the maximum gap between the volute 101 and the middle partition 410 is set to be less than or equal to 1 / 3 of H1, that is, the maximum gap between the volute 101 and the middle partition 410 is less than or equal to 1 / 3 of the thickness of the first sealing ring 510, so as to avoid the gap between the volute 101 and the middle partition 410 being too large and thus reducing the sealing performance. Figure 7 The diagram shows that the depth of the first annular groove 412 is 2 / 3H1, and the gap between the volute 101 and the middle partition 410 is 1 / 3H1, which meets the assembly requirements of the first sealing ring 510 and the gap requirements between the volute 101 and the bracket 400.

[0070] Reference Figure 5 As shown, in some embodiments, the second sealing element 600 is a second sealing ring 610, which is square. The air guide 420 has a second annular groove 422 on its end face facing the volute 101. The second sealing ring 610 is arranged circumferentially along the second air guide port 421. The second annular groove 422 is square and matches the second sealing ring 610. The second sealing ring 610 is embedded in the second annular groove 422. The second sealing ring 610 and the second annular groove 422 can be fixed by interference fit, adhesive, or other means. The second annular groove 422 effectively limits the second sealing ring 610.

[0071] Reference Figure 6As shown, it can be understood that after the air duct assembly 3000 is moved into the air outlet cavity and positioned, the air outlet 130 is connected to the second air guide 421, so that the air duct 110 is connected to the air guide channel 423. The second sealing ring 610 is set on the air guide 420, with a part of the second sealing ring 610 connected in the second annular groove 422 and another part protruding out of the second annular groove 422, ensuring that the second sealing ring 610 can abut against the end face of the air outlet 130.

[0072] In this embodiment, the size of the air outlet 130 is close to the size of the second air guide 421, so that the air outlet 130 and the second air guide 421 can be set directly opposite each other, without affecting the smoothness of the airflow, and ensuring that the second sealing ring 610 can abut against the end face of the air outlet 130 and surround the air outlet 130 to form an effective sealing structure.

[0073] Reference Figure 8 As shown, specifically, the second sealing ring 610 has a hollow structure. The end face of the second sealing ring 610 facing the bottom wall of the second annular groove 422 is a second flat surface 611, and the end face of the second sealing ring 610 facing the volute 101 is a second arc-shaped surface 612. The second sealing ring 610 is connected to the bottom wall of the second annular groove 422 through the second flat surface 611, resulting in a tighter fit and a more stable connection structure. Because the second sealing ring 610 has a hollow internal structure, when it abuts against the end face of the air outlet 130 through the second arc-shaped surface 612, the second sealing ring 610 can be deformed under pressure, increasing the contact area between the second arc-shaped surface 612 and the volute 101, resulting in a tighter fit and a better sealing effect.

[0074] In some embodiments, the second plane 611 and the bottom wall of the second annular groove 422 are connected by adhesive. Specifically, adhesive can be applied to the bottom wall of the second annular groove 422. When the second sealing ring 610 is placed in the second annular groove 422, the second sealing ring 610 is glued and fixed by adhesive, making the second sealing ring 610 less likely to fall off and improving reliability.

[0075] Reference Figure 8 As shown, in this embodiment, the thickness of the second sealing ring 610 is H2, and the depth of the second annular groove 422 is set to be greater than or equal to 2 / 3 of H2. That is, the depth of the second annular groove 422 is greater than or equal to 2 / 3 of the thickness of the second sealing ring 610, so that the second annular groove 422 has sufficient depth to accommodate the second sealing ring 610, further improving the stability of the assembly of the second sealing ring 610 and making the second sealing ring 610 less likely to fall off.

[0076] It is understandable that when the depth of the second annular groove 422 is less than 2 / 3 of H2, it means that the portion of the second sealing ring 610 located inside the second annular groove 422 is too small, while the portion protruding outside the second annular groove 422 is too large. Since the volute 101 of the air duct assembly 3000 will come into contact with the second sealing ring 610 during the pulling process, friction will be generated. Under the action of friction, the second sealing ring 610 is prone to fall off.

[0077] Furthermore, it is understood that when the depth of the second annular groove 422 is set to be greater than or equal to 2 / 3 of H2, the thickness of the second sealing ring 610 protruding from the second annular groove 422 is less than or equal to 1 / 3 of H2. In order to ensure that the second sealing ring 610 abuts against the volute 101 to form a stable sealing structure, in this embodiment, the maximum gap between the volute 101 and the air guide 420 is set to be less than or equal to 1 / 3 of H2, so as to avoid the gap between the volute 101 and the air guide 420 being too large and thus reducing the sealing performance. Figure 8 The diagram shows that the depth of the second annular groove 422 is 2 / 3H2, and the gap between the volute 101 and the air guide 420 is 1 / 3H2, which meets the assembly requirements of the second sealing ring 610 and the gap requirements between the volute 101 and the bracket 400.

[0078] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A heat pump device, characterized in that, include: Box; A bracket is provided in the inner cavity of the box and divides the inner cavity into an air inlet cavity and an air outlet cavity. The bracket is provided with a first air guide port and a second air guide port. The first air guide port is connected to the air inlet cavity, and the second air guide port is connected to the exhaust port of the box. A duct assembly is slidably connected within the air outlet cavity. The duct assembly includes a duct shell and a fan disposed within the duct shell. The duct shell has a connected air inlet and an air outlet. The air inlet is connected to the first air guide port, and the air outlet is connected to the second air guide port. A first sealing element and a second sealing element are provided, wherein the first sealing element is disposed around the air inlet to seal the gap between the air inlet and the first air guide; and the second sealing element is disposed around the air outlet to seal the gap between the air outlet and the second air guide.

2. The heat pump device according to claim 1, characterized in that, The bracket includes a partition plate and an air guide. The partition plate is located between the air inlet chamber and the air outlet chamber. The air guide is disposed in the air outlet chamber and connected to the partition plate. The air guide is located between the air duct assembly and the exhaust port. The first air guide is disposed in the partition plate and the second air guide is disposed in the air guide.

3. The heat pump device according to claim 2, characterized in that, The air duct housing is a volute. The air inlet is located on one side of the volute along its axial direction and faces the middle partition. The middle partition has a first annular groove on the side facing the air outlet. The first annular groove is arranged circumferentially along the first air guide. The first sealing member is embedded in the first annular groove and protrudes from the first annular groove and can abut against the side of the volute.

4. The heat pump device according to claim 3, characterized in that, The first sealing element is a first sealing ring, the depth of the first annular groove is greater than or equal to 2 / 3 of the thickness of the first sealing ring, and the maximum gap between the volute and the middle partition is less than or equal to 1 / 3 of the thickness of the first sealing ring.

5. The heat pump device according to claim 2, characterized in that, The air duct shell is a volute, and the axial direction of the volute is arranged perpendicular to the middle partition. The end face of the air guide facing the air outlet is provided with a second annular groove, which is arranged circumferentially along the second air guide. The second sealing member is embedded in the second annular groove and protrudes from the second annular groove and can abut against the end face of the air outlet.

6. The heat pump device according to claim 5, characterized in that, The second sealing element is a second sealing ring, the depth of the second annular groove is greater than or equal to 2 / 3 of the thickness of the second sealing ring, and the maximum gap between the end face of the air outlet and the end face of the second air guide is less than or equal to 1 / 3 of the thickness of the second sealing ring.

7. The heat pump device according to claim 2, characterized in that, The partition plate and the air guide are integrally formed.

8. The heat pump device according to claim 1, characterized in that, The first seal and the second seal are both sealing rings with hollow structures and connected to the bracket. The end face of the sealing ring on one side along its axial direction is a flat surface and the end face on the other side is an arc-shaped surface. The flat surface of the sealing ring is used to connect with the bracket, and the arc-shaped surface of the sealing ring is used to abut and seal with the air duct shell.

9. The heat pump device according to claim 8, characterized in that, The surface of the bracket is provided with an annular groove for installing the sealing ring, and the bottom wall of the annular groove is connected to the plane of the sealing ring by adhesive bonding.

10. The heat pump device according to claim 1, characterized in that, The air duct shell is made of foam, and a sheet metal part is provided on the outside of the foam. The sheet metal part is connected to the fan. A guide rail is provided inside the housing, and the sheet metal part is slidably connected to the guide rail.

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