Heating and ventilation motor

Abstract

The utility model discloses a heating and ventilation motor, which comprises a shell, a plurality of electronic elements and a pressing piece, the shell is provided with a heat dissipation protrusion formed by protruding from the inner wall of the shell to the interior of the shell, the heat dissipation protrusion comprises at least one heat dissipation plane, the heat dissipation plane is arranged towards one side of the axis of the motor, and the heat dissipation plane extends downwards along the inner wall of the shell; at least one electronic component is in thermal contact with the heat dissipation plane and conducts heat transfer with the heat dissipation protrusions. The pressing piece is arranged on the side, away from the heat dissipation protrusions, of the electronic element and presses the electronic element on the heat dissipation protrusions. The heating and ventilation motor provided by the utility model is used for realizing heat dissipation of the electronic component, and the shell is relatively simple in structure and convenient to manufacture.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a heating, ventilation and air conditioning (HVAC) motor. Background Art

[0002] Existing household appliances such as air conditioners and refrigerators usually include permanent magnet brushless HVAC motors. Since these household appliances need to work for a long time, the HVAC motor will also work for a long time. Electronic components in the HVAC motor will generate heat during operation, especially IGBT components. If the heat generated by the electronic components cannot be dissipated, the temperature inside the HVAC motor will be too high, affecting the operation of the HVAC motor.

[0003] To achieve heat dissipation of electronic components in existing HVAC motors, heat dissipation bosses are formed in the housing. Then, the electronic components and the heat dissipation bosses are stacked along the axis of the HVAC motor, and then the electronic components are locked and fixed to the heat dissipation bosses by a pressing strip. The structure of the housing with such heat dissipation bosses is relatively complex and not easy to manufacture. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an HVAC motor, which is used to achieve heat dissipation of electronic components and has a relatively simple housing structure and is easy to manufacture.

[0005] The utility model is realized through the following technical solutions:

[0006] An HVAC motor, comprising:

[0007] A housing, the housing is provided with heat dissipation protrusions formed by protruding from the inner wall of the housing towards the inside of the housing. The heat dissipation protrusions include at least one heat dissipation plane, the heat dissipation plane is arranged on the side facing the axis of the motor, and the heat dissipation plane extends downward along the inner wall of the housing;

[0008] A plurality of electronic components, at least one of the electronic components is in thermal contact with the heat dissipation plane to perform heat transfer with the heat dissipation protrusion;

[0009] A pressing member, the pressing member is arranged on the side of the electronic component facing away from the heat dissipation protrusion and presses the electronic component against the heat dissipation protrusion.

[0010] Furthermore, a plurality of the electronic components are arranged at the edge of the circuit board of the motor, are evenly distributed along a first direction and are respectively in contact with the heat dissipation plane. The pressing member extends along the arrangement direction of the electronic components, and one pressing member synchronously presses at least one of the electronic components against the heat dissipation protrusion.

[0011] Further, a plurality of the electronic components are disposed at the edge of the control circuit board of the motor, are evenly distributed along a first direction, and are respectively in thermal contact with the heat dissipation plane. The pressing member extends along the arrangement direction of the electronic components, and a plurality of the pressing members press at least one of the electronic components against the heat dissipation protrusion. The plurality of pressing members are arranged at intervals downward along the inner wall of the housing.

[0012] Further, the plane where the heat dissipation plane is located is parallel to the axis of the HVAC motor.

[0013] Further, locking holes are respectively formed at opposite ends of the pressing member, and the pressing member is fixedly connected to the heat dissipation protrusion through a locking member passing through the locking holes.

[0014] Further, an insulating sleeve is sleeved on the pressing member so that the pressing member is in insulating contact with the electronic component.

[0015] Further, the insulating sleeve is a heat-shrinkable sleeve made of PVC material, and the pressing member is made of galvanized steel sheet material.

[0016] Further, the ratio of the sum of the projected areas formed by all the electronic components on the heat dissipation plane in the direction perpendicular to the center line of the housing to the area of the heat dissipation plane is 1:(1.8 - 2.5), and the projections of all the electronic components all fall on the heat dissipation plane.

[0017] Further, at least one of the electronic components is in direct contact with the heat dissipation plane to achieve thermal contact;

[0018] Or, the HVAC motor further includes heat dissipation fins, the heat dissipation fins are disposed between the electronic components and the heat dissipation plane, and at least one of the electronic components is in indirect contact with the heat dissipation plane through the heat dissipation fins to achieve thermal contact.

[0019] Further, the ratio of the sum of the projected areas formed by all the electronic components on the heat dissipation fins in the direction perpendicular to the center line of the housing to the area of the surface of the heat dissipation fins facing the electronic components is 1:(1.1 - 1.3), and the projections of all the electronic components all fall on the heat dissipation fins.

[0020] Further, heat dissipation ribs are formed on the outer wall of the housing to increase the heat dissipation area of the housing.

[0021] Further, it further includes a control circuit board, the electronic components are electrically connected to the control circuit board, and the main body parts of the electronic components are disposed on the side of the control circuit board facing the stator and rotor of the motor.

[0022] Further, a receiving cavity is formed inside the housing, and the motor further includes a sealing plate. The sealing plate is disposed inside the housing and axially divides the receiving cavity into a first chamber and a second chamber. The control circuit board is disposed in the first chamber, and the second chamber is used to house the stator and rotor.

[0023] Further, a seal is provided between the sealing plate and the housing. The seal is used to seal the connection between the sealing plate and the housing to hermetically separate the first chamber and the second chamber.

[0024] Further, the housing is further provided with a through hole penetrating the housing. The through hole communicates with the first chamber, and the through hole is disposed on a side of the first chamber adjacent to the sealing plate.

[0025] Further, the housing is further provided with a heat dissipation hole penetrating the housing. The heat dissipation hole communicates with the second chamber, and the heat dissipation hole is disposed on a side of the second chamber adjacent to the sealing plate so as to be axially misaligned with the stator and rotor.

[0026] Further, the housing includes a main body portion and a positioning portion. The positioning portion protrudes inwardly toward the second chamber, and a part of the positioning portion and the main body portion are hollowed out so that a heat dissipation hole is formed between the positioning portion and the main body portion.

[0027] Further, it further includes a bearing bracket. The bearing bracket abuts against an end face of the positioning portion axially; the bearing bracket is provided with a hollowed-out portion.

[0028] Further, the sealing plate and the bearing bracket are stacked axially along the motor, and the sealing plate and the bearing bracket are locked and fixed by fixing members.

[0029] Compared with the prior art, the advantages of the present utility model are as follows:

[0030] By forming heat dissipation protrusions on the inner wall of the housing and making the heat dissipation protrusions include a heat dissipation plane located inside the housing and extending downward along the inner wall of the housing, the heat dissipation plane can transfer heat to the electronic components, absorb the heat of the electronic components and dissipate it to the outside. In addition, the setting of the heat dissipation plane can also simplify the structure of the housing, and the heat dissipation plane extending downward along the inner wall of the housing is convenient for the structural design of the mold and also convenient for the demolding of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a heating and ventilation motor according to an embodiment of the present utility model;

[0032] Figure 2The plan sectional view of the HVAC motor according to an embodiment of the present utility model;

[0033] Figure 3 is Figure 2 the enlarged view of part A in

[0034] Figure 4 The partial structure schematic diagram of the HVAC motor according to an embodiment of the present utility model;

[0035] Figure 5 The exploded view of the partial structure of the HVAC motor according to an embodiment of the present utility model;

[0036] Figure 6 Another partial structure schematic diagram of the HVAC motor according to an embodiment of the present utility model.

[0037] In the figure: 1. Outer shell; 11. Heat dissipation protrusion; 111. Heat dissipation plane; 12. Heat dissipation rib; 13. First chamber; 14. Second chamber; 15. Through hole; 16. Body part; 17. Positioning part; 171. Heat dissipation hole; 18. First shell; 19. Second shell; 2. Electronic component; 21. Main body part; 22. Pin; 3. Pressing part; 31. Locking hole; 32. Insulating sleeve; 33. Locking part; 4. Heat sink; 5. Control circuit board; 6. Stator and rotor; 61. Rotating shaft; 62. Bearing; 7. Sealing plate; 71. Sealing part; 8. Bearing bracket; 81. Hollow part; 82. Fixing part. Detailed implementation manners

[0038] The technical solution of the utility model will be further described in detail and non - restrictively below in conjunction with the preferred embodiments and their accompanying drawings. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0039] As Figures 1 to 5As shown, a heating and ventilation motor corresponding to a preferred embodiment of the present utility model can specifically be a permanent magnet brushless heating and ventilation motor. The motor includes a housing 1, electronic components 2, and a pressing member 3, and may also include components such as a stator-rotor 6, a bearing bracket 8, and a sealing plate 7.

[0040] The housing 1 may include a first housing body 18 and a second housing body 19. The first housing body 18 and the second housing body 19 are distributed axially and joined to each other. The first housing body 18 and the second housing body 19 jointly enclose a receiving cavity. The receiving cavity can be used to accommodate components such as electronic components 2, a pressing member 3, a bearing bracket 8, a stator-rotor 6, a control circuit board 5, and a sealing plate 7. Among them, the housing 1 can be made of aluminum. During the operation of the heating and ventilation motor, heat is generated, especially at the stator-rotor 6. Aluminum can quickly and effectively conduct the heat to the outside to ensure that the temperature in the receiving cavity is maintained within the allowable range.

[0041] Further referring to Figures 3 to 5 , the housing 1 is provided with a heat dissipation protrusion 11 formed by protruding from the inner wall of the housing 1 towards the inside of the housing 1. Specifically, a part of the inner wall of the first housing body 18 protrudes towards the inside of the housing 1 to form the heat dissipation protrusion 11. The heat dissipation protrusion 11 includes at least one heat dissipation plane 111. The heat dissipation plane 111 is arranged on the side facing the axis of the motor, and the heat dissipation plane 111 extends downward along the inner wall of the housing 1. Preferably, there is one heat dissipation plane 111, and the plane where the heat dissipation plane 111 is located is parallel to the axis of the motor. The heat dissipation plane 111 can be used for thermal contact with the electronic components 2. At this time, the heat dissipation plane 111 can perform heat transfer with the electronic components 2, and then absorb the heat of the electronic components 2 and dissipate it to the outside. Among them, the heat dissipation plane 111 can be a strip-shaped surface, and the length direction of the heat dissipation plane 111 can be perpendicular to the axial direction of the motor. The way of thermal contact between the heat dissipation plane 111 and the electronic components 2 can be that the heat dissipation plane 111 is in direct contact with the electronic components 2, so that the heat of the electronic components 2 can be directly conducted to the heat dissipation plane 111 to realize the thermal contact between the heat dissipation plane 111 and the electronic components 2; or, a heat conduction member can be arranged between the heat dissipation plane 111 and the electronic components 2, and the heat dissipation plane 111 and the electronic components 2 are indirectly in contact through the heat conduction member. The heat of the electronic components 2 is conducted to the heat conduction member and then conducted to the heat dissipation plane 111 through the heat conduction member, thereby realizing the thermal contact between the heat dissipation plane 111 and the electronic components 2.

[0042] Due to processing errors of the heat dissipation protrusions 11, installation errors between the heat dissipation protrusions 11 and the electronic components 2, etc., there may be an offset between the heat dissipation plane 111 and the electronic components 2. To compensate for such processing errors, installation errors, etc., the area of the heat dissipation plane 111 is larger than the sum of the projected areas formed by all the electronic components 2 on the heat dissipation plane 111 along the direction perpendicular to the center line of the housing 1, so that when the heat dissipation plane 111 and the electronic components 2 are offset, the heat dissipation plane 111 can still maintain full contact with the surfaces of the electronic components 2, thereby forming heat transfer. Although a larger area of the heat dissipation plane 111 can also provide better heat dissipation effect for the electronic components 2, when the area of the heat dissipation plane 111 is larger, it will cause the occupied space of the heat dissipation protrusions 11 to become larger and the weight to be heavier. To enable the heat dissipation protrusions 11 to meet the requirement of quickly dissipating heat from the electronic components 2 and to keep the weight of the housing 1 low, the ratio of the sum of the projected areas formed by all the electronic components 2 on the heat dissipation plane 111 along the direction perpendicular to the center line of the housing 1 to the area of the heat dissipation plane 111 can be 1:(1.8 - 2.5). Among them, the projections formed by all the electronic components 2 along the direction perpendicular to the center line of the housing 1 can all fall on the heat dissipation plane 111.

[0043] In some specific embodiments, a heat conduction member can be provided between the heat dissipation plane 111 and the electronic components 2. The heat conduction member is specifically a heat sink 4, that is, a heat sink 4 is provided between the electronic components 2 and the heat dissipation plane 111. The heat sink 4 is in contact with the electronic components 2 and the heat dissipation plane 111 respectively. The heat sink 4 is prepared from a material with good heat conduction performance, and the heat dissipation efficiency of the heat sink 4 is greater than that of the housing 1. For example, the heat sink 4 is a heat dissipation silicon sheet, and the heat dissipation silicon sheet is in the shape of a sheet and can be adaptively and completely attached to the surface of the heat dissipation plane 111. By providing a heat sink 4 between the electronic components 2 and the heat dissipation plane 111, the heat on the electronic components 2 can be quickly transferred to the heat sink 4 and then quickly transferred to the heat dissipation protrusions 11, improving the heat dissipation effect of the electronic components 2. In addition, since the cost of the heat sink 4 is relatively high, by using the combination of the heat sink 4 and the heat dissipation protrusions 11 to dissipate heat from the electronic components 2, the cost can be reduced while ensuring efficient heat dissipation of the electronic components 2.

[0044] The shape of the heat sink 4 can be adapted to the overall structure formed by the multiple electronic components 2. That is, the length direction of the heat sink 4 can be parallel to the arrangement direction of the electronic components 2, so that the heat sink 4 can be in full and sufficient contact with the multiple electronic components 2. And since the length direction of the heat dissipation plane 111 is also parallel to the arrangement direction of the electronic components 2, therefore, the heat sink 4 can also be in full and sufficient contact with the heat dissipation plane 111, so as to improve the heat dissipation effect of the combination of the heat sink 4 and the heat dissipation protrusions 11 on the electronic components 2. Specifically, the projections formed by the multiple electronic components 2 along the direction perpendicular to the center line of the housing 1 can all fall on the heat sink 4, so that the surface of the electronic components 2 facing the heat sink 4 is completely attached to the heat sink 4.

[0045] Due to reasons such as the processing error of the heat sink 4 and the installation error between the heat sink 4 and the electronic components 2, there may be an offset between the heat sink 4 and the electronic components 2. To compensate for such processing errors, installation errors, etc., the area of the heat sink 4 is larger than the sum of the projection areas formed by all the electronic components 2 along the axial direction of the housing 1 on the heat sink 4, so that when there is an offset between the heat sink 4 and the electronic components 2, the heat sink 4 can still maintain all contacts with the surfaces of the electronic components 2, thereby forming heat transfer; in addition, to avoid excessive cost caused by too large an area of the heat sink 4, the ratio of the sum of the projection areas formed by all the electronic components 2 along the axial direction of the housing 1 on the heat sink 4 to the area of the surface of the heat sink 4 facing the electronic components 2 can be 1:(1.1 - 1.3). Among them, the projections formed by all the electronic components 2 along the axial direction perpendicular to the housing 1 all fall on the heat sink 4.

[0046] Further referring to Figure 1 , in some specific embodiments, heat dissipation ribs 12 are formed on the outer wall of the housing 1, and the heat dissipation ribs 12 are arranged corresponding to the heat dissipation protrusions 11. When the heat of the electronic components 2 is transferred to the heat dissipation protrusions 11, the heat will be further transferred to the outer wall of the housing 1 to dissipate heat to the outside. By forming the heat dissipation ribs 12 on the outer wall of the housing 1, the surface area of the outer wall of the housing 1 can be increased, thereby increasing the heat dissipation area of the housing 1 and improving the heat dissipation effect of the electronic components 2. Among them, the heat dissipation ribs 12 are in the shape of a sheet body and extend along the axial direction. One or more heat dissipation ribs 12 can be provided, preferably multiple heat dissipation ribs 12 are arranged evenly along the circumferential direction of the motor.

[0047] In the existing motor, the heat dissipation plane 111 used to contact the electronic component 2 for dissipating heat from the electronic component 2 is perpendicular to the axis of the motor, resulting in a relatively complex structure of the housing 1. The mold for forming the housing 1 is generally of the form of upper and lower die opening. Due to the existence of the heat dissipation plane 111 perpendicular to the axis of the motor, this increases the difficulty of the structural design of the mold and also increases the difficulty of demolding the housing 1. In this application, the heat dissipation plane 111 is arranged to extend downward from the inner wall of the housing 1, which can simplify the structure of the housing 1. That is, after the electronic component (IGBT) 2 is electrically inserted into the control circuit board 5, at least part of its axially extending working surface can be directly or indirectly attached to the heat dissipation plane 111. The above arrangement can facilitate the structural design of the mold and also facilitate the demolding of the housing 1.

[0048] Further referring to Figure 3 and Figure 4 ,the electronic component 2 is electrically connected to the control circuit board 5, and the electronic component 2 can be vertically installed on the control circuit board 5. The electronic component 2 includes a main body portion 21 and leads 22 connected to the main body portion 21. The leads 22 can be electrically connected to the control circuit board 5. For example, the leads 22 are soldered to the pads of the control circuit board 5 to achieve the electrical connection between the electronic component 2 and the control circuit board 5. The main body portion 21 can be arranged on the side of the control circuit board 5 facing the stator-rotor 6; in the motor, the control circuit board 5 is arranged at one end of the accommodation cavity, and the stator-rotor 6 is arranged at the other end of the accommodation cavity. A relatively large space can be formed between the control circuit board 5 and the stator-rotor 6. Arranging the main body portion 21 on the side of the control circuit board 5 facing the stator-rotor 6 can make full use of the internal space of the motor, and also facilitate the locking operation between the electronic component 2 and the housing 1. Specifically, the stator-rotor 6 needs to lead wires to the control circuit board 5, and an avoidance installation space must be left at the axial end of the stator-rotor 6 for installation. This avoidance space can just be used for installing the electronic component 2 and also just for forming the heat dissipation protrusions 11, without changing the external shape of the motor housing at all, thereby achieving the purpose of making full use of the internal space of the motor and ensuring that the assembly structure of the motor in the corresponding product does not need to be remolded, simplifying the process.

[0049] Further referring to Figure 4 ,a plurality of electronic components 2 can be provided. The plurality of electronic components 2 can be arranged at the edge portion of the control circuit board 5 of the motor, and the plurality of electronic components 2 can be evenly arranged along the first direction and are respectively in thermal contact with the heat dissipation plane 111, so that a relatively large number of electronic components 2 can be in thermal contact with the heat dissipation plane 111. Among them, the first direction can be parallel to the length direction of the heat dissipation plane 111.

[0050] Since the electronic component 2 is vertically mounted on the control circuit board 5, the length direction of the electronic component 2 can be parallel to the axial direction of the motor. At this time, the width direction of the electronic component 2 is parallel to the length direction of the heat dissipation plane 111. Therefore, the heat dissipation plane 111 can contact a relatively large number of electronic components 2. For example, all the electronic components 2 can be connected to the heat dissipation plane 111. By connecting the heat dissipation plane 111 to all or a relatively large number of electronic components 2, the arrangement of the multiple electronic components 2 can be made more compact, the space occupied by the multiple electronic components 2 can be reduced, and the housing 1 does not need to reserve a large amount of space for accommodating the electronic components 2, and the structure of the housing 1 can be more compact. Among them, specifically four electronic components 2 can be provided, and the four electronic components 2 are equally spaced along the length direction of the heat dissipation plane 111. The electronic component 2 can specifically be an IGBT (Insulated Gate Bipolar Transistor).

[0051] Further referring to Figure 5 , the pressing member 3 is disposed on the side of the electronic component 2 away from the heat dissipation protrusion 11 and presses the electronic component 2 against the heat dissipation protrusion 11. Specifically, locking holes 31 can be provided at opposite ends of the pressing member 3. When the pressing member 3 presses the electronic component 2, a locking member 33 can be passed through the locking hole 31 and then fixedly connected to the heat dissipation protrusion 11 to achieve the pressing and fixing of the electronic component 2. Among them, the locking hole 31 can be a through hole or a threaded hole, and the locking member 33 can be a screw. After the locking member 33 passes through the locking hole 31 or is threadedly connected to the pressing member 3 through the locking hole 31, it will further move to be threadedly connected to the heat dissipation protrusion 11 to achieve the pressing and fixing of the electronic component 2.

[0052] The pressing member 3 can be provided with one or more. Each pressing member 3 can be used to press at least one electronic component 2 against the heat dissipation protrusion 11. In this embodiment, one pressing member 3 is provided. The pressing member 3 extends along the arrangement direction of the electronic components 2 so that one pressing member 3 can be used to press a plurality of electronic components 2. Preferably, one pressing member 3 can perform a locking action on all the electronic components 2. When the pressing member 3 presses a plurality of electronic components 2, two locking holes 31 can be provided on the pressing member 3. The two locking holes 31 are distributed at opposite ends of the pressing member 3 so that two locking members 33 can pass through the corresponding locking holes 31 to be fixedly connected to the heat dissipation protrusion 11 to apply a pressing force to opposite ends of the pressing member 3. By applying a pressing force at both ends of the pressing member 3, the pressing and fixing of a plurality of electronic components 2 can be achieved, and the process of pressing and fixing a plurality of electronic components 2 is more convenient and rapid. Among them, the pressing member 3 can be a plate body, and the pressing member 3 can be used to press all the electronic components 2. Compared with the multiple repeated locking processes in the prior art, only one locking process is required in this application, which is convenient and effective. In addition, in other embodiments, the number of pressing members 3 can be set to be multiple. The multiple pressing members 3 can be arranged at intervals along the arrangement direction of the electronic components 2. Each pressing member 3 can be used to press one electronic component 2, or some of the pressing members 3 are respectively used to press one electronic component 2, and some of the pressing members 3 are respectively used to press some of the electronic components 2, or each pressing member 3 is used to press some of the electronic components 2.

[0053] In some specific embodiments, the pressing member 3 is made of galvanized steel sheet. The cost of the galvanized steel sheet is relatively low, which can reduce the production cost of the pressing member 3, and the galvanized steel sheet can have strong corrosion resistance. Since the temperature inside the motor is relatively high when the motor is running, that is, in the accommodation cavity of the housing 1, water vapor will be generated inside the motor. The water vapor may come into contact with the pressing member 3 provided in the accommodation cavity. By using the galvanized steel sheet as the pressing member 3, it can effectively prevent the pressing member 3 from being corroded due to contact with water vapor, thereby reducing the risk of short circuit of the electronic component 2 caused by the corrosion of the pressing member 3 and extending the service life of the motor.

[0054] In some specific embodiments, an insulating sleeve 32 is further sleeved on the pressing member 3. The insulating sleeve 32 is made of insulating material. For example, the insulating sleeve 32 is a heat shrinkable sleeve made of PVC material to enhance the insulation effect between the pressing member 3 and the electronic component 2, thereby reducing the harm of surges to the electronic component 2 and generating an overvoltage protection function. Therefore, when the motor is applied to equipment such as an outdoor unit of an air conditioner that needs to be placed outdoors, the motor with the overvoltage protection function can have a better lightning protection effect.

[0055] Further refer to Figure 2, since the control circuit board 5 generates heat during operation, the temperature of the space near the control circuit board 5 is higher than that of the outside, which causes the gas with a lower temperature in the space near the control circuit board 5 to condense and generate water vapor. To prevent the water vapor from contacting the stator-rotor 6 and causing corrosion, short circuit and other drawbacks to the stator-rotor 6, a sealing plate 7 is provided in the motor housing 1. The sealing plate 7 divides the accommodation cavity in the housing 1 into a first chamber 13 for accommodating the control circuit board 5 and a second chamber 14 for accommodating the stator-rotor 6. Therefore, the water vapor generated due to the heat of the control circuit board 5 will be blocked by the sealing plate 7 and cannot enter the second chamber 14, thereby preventing the water vapor in the first chamber 13 from entering the second chamber 14 through air flow and attaching to the stator-rotor 6, thus affecting the stator-rotor 6.

[0056] To further improve the sealing performance between the first chamber 13 and the second chamber 14, a sealing member 71 is also provided between the sealing plate 7 and the housing 1. The sealing member 71 can be an O-ring. The sealing member 71 is used to seal the connection between the sealing plate 7 and the housing 1, thereby improving the sealing performance between the first chamber 13 and the second chamber 14 to prevent the condensed water in the first chamber 13 from entering the second chamber 14 and affecting the stator-rotor 6.

[0057] In some specific embodiments, the housing 1 is provided with a through hole 15 penetrating the housing 1, and the through hole 15 is communicated with the first chamber 13. The through hole 15 can be provided on the side of the first chamber 13 close to the sealing plate 7, specifically, it can be provided on the lower side of the first chamber 13. The water vapor in the first chamber 13 will condense into water droplets on the inner wall of the housing 1, and the water droplets will slide down due to the action of gravity. When the water droplets flow to the through hole 15, they can flow out of the first chamber 13 through the through hole 15, thereby discharging the water droplets in the first chamber 13; in addition, through the convection of air, the water vapor in the first chamber 13 can also be discharged.

[0058] Further referring to Figure 6 , since the stator-rotor 6 also generates heat during operation, which causes the temperature in the second chamber 14 to rise. To prevent the temperature in the second chamber 14 from being too high and affecting the operation of the stator-rotor 6, the housing 1 is also provided with a heat dissipation hole 171 penetrating the housing 1. The heat dissipation hole 171 is communicated with the second chamber 14 so that the heat in the second chamber 14 can be dissipated to the outside through the heat dissipation hole 171. Among them, the heat dissipation hole 171 can be provided on the side of the second chamber 14 close to the sealing plate 7 and is axially misaligned with the stator-rotor 6. On the one hand, it plays a protective role for the stator-rotor 6. On the other hand, because hot air rises, by setting the heat dissipation hole 171 on the upper side of the second chamber 14, it is convenient to export the heat in the second chamber 14. The heat dissipation hole 171 can specifically be provided on the upper side of the second chamber 14.

[0059] In some specific embodiments, the heat dissipation holes 171 can be formed by stamping on a part of the wall of the housing 1. Specifically, the housing 1 can include a main body portion 16 and a positioning portion 17. Through the stamping process, the positioning portion 17 is bent towards the inside of the housing 1, and a part of the positioning portion 17 and the main body portion 16 are hollowed out. For example, both ends of the positioning portion 17 are connected to the main body portion 16, while the central part of the positioning portion 17 is hollowed out from the main body portion 16. Among them, the separated part between the positioning portion 17 and the main body portion 16 will form a gap, and this gap can be used as the heat dissipation hole 171 to dissipate heat from the second chamber 14, and the positioning portion 17 bent towards the inside of the housing 1 can also position or support the components inside the housing 1.

[0060] Further referring to Figure 2 and Figure 6 , the stator-rotor 6 includes a rotating shaft 61, and a bearing 62 is connected to one end of the rotating shaft 61. To install the bearing 62, the motor is provided with a bearing bracket 8 for supporting the bearing 62. The bearing bracket 8 can be connected to the housing 1 by bolts, so that the bearing bracket 8 can be fixed inside the second chamber 14. To reduce the weight of the motor, the bearing bracket 8 can be provided with a hollowed-out portion 81. The setting of the hollowed-out portion 81 can reduce the weight of the bearing bracket 8, and thus reduce the weight of the motor. In addition, the bearing bracket 8 can be stacked with the sealing plate 7, and the bearing bracket 8 and the sealing plate 7 can be locked by a fixing member 82. Among them, the fixing member 82 can be a screw, a pin or other components that can achieve a fixed connection.

[0061] To facilitate the installation of the bearing bracket 8, the bearing bracket 8 can be abutted against the positioning portion 17. After the bearing bracket 8 is abutted against the positioning portion 17, the positioning of the bearing bracket 8 can be achieved, and then the bearing bracket 8 is connected to the housing 1 and the sealing plate 7.

[0062] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A heating, ventilation and air conditioning (HVAC) motor, characterized in that, It includes: A housing (1), the housing (1) being provided with a heat dissipation protrusion (11) protruding from an inner wall of the housing (1) toward the inside of the housing (1), the heat dissipation protrusion (11) comprising at least one heat dissipation plane (111), the heat dissipation plane (111) being arranged toward one side of the axis of the motor, and the heat dissipation plane (111) extending downwardly along the inner wall of the housing (1); a plurality of electronic components (2), at least one of the electronic components (2) being in thermal contact with the heat dissipation plane (111) so as to transfer heat with the heat dissipation protrusion (11); A pressing piece (3), the pressing piece (3) being arranged on a side of the electronic component (2) facing away from the heat dissipation protrusion (11), and pressing the electronic component (2) against the heat dissipation protrusion (11).

2. The HVAC motor according to claim 1, wherein A plurality of the electronic components (2) are arranged at the edge of the control circuit board (5) of the motor and are evenly distributed along a first direction and are respectively in thermal contact with the heat dissipation plane (111); the pressing member (3) extends along the arrangement direction of the electronic components (2); and one of the pressing members (3) presses at least one of the electronic components (2) against the heat dissipation protrusion (11).

3. The HVAC motor according to claim 1, characterized in that, The plurality of electronic components (2) are arranged at the edge of the control circuit board (5) of the motor and are evenly distributed along a first direction and are respectively in thermal contact with the heat dissipation plane (111); the pressing member (3) extends along the arrangement direction of the electronic components (2); and the plurality of pressing members (3) press at least one of the electronic components (2) against the heat dissipation protrusion; the plurality of pressing members (3) are arranged at intervals downward along the inner wall of the housing (1).

4. The HVAC motor according to claim 1, wherein The plane where the heat dissipation plane (111) is located is arranged parallel to the axis of the HVAC motor.

5. The HVAC motor according to claim 2, characterized in that, Locking holes (31) are respectively provided at opposite ends of the clamping piece (3), and the clamping piece (3) is fixedly connected to the heat dissipation protrusion (11) via a locking piece (33) penetrating through the locking hole (31).

6. The HVAC motor according to claim 1, characterized in that, The pressing piece (3) is provided with an insulating sleeve (32) to ensure that the pressing piece (3) is insulated from the electronic component (2).

7. The HVAC motor according to claim 6, wherein, The insulating sleeve (32) is a heat shrink sleeve made of PVC material, and the pressing piece (3) is made of galvanized steel plate.

8. The HVAC motor according to claim 1, wherein, The ratio of the sum of the projection areas of all the electronic components (2) on the heat dissipation plane (111) in a direction perpendicular to the center line of the housing (1) to the area of ​​the heat dissipation plane (111) is 1:(1.8-2.5), and the projections of all the electronic components (2) fall on the heat dissipation plane (111).

9. The HVAC motor according to claim 1, wherein At least one of the electronic components (2) is in direct contact with the heat dissipation plane (111) to achieve thermal contact; Alternatively, the HVAC motor further comprises a heat sink (4), wherein the heat sink (4) is arranged between the electronic component (2) and the heat dissipation plane (111), and at least one of the electronic components (2) is in indirect contact with the heat dissipation plane (111) via the heat sink (4) to achieve thermal contact.

10. The HVAC motor according to claim 9, characterized in that, The ratio of the sum of the projected areas of all the electronic components (2) formed on the heat sink (4) in a direction perpendicular to the center line of the housing (1) to the area of the surface of the heat sink (4) facing the electronic components (2) is 1:(1.1 - 1.3), and the projections of all the electronic components (2) all fall on the heat sink (4).

11. The HVAC motor according to claim 1, characterized in that, Heat dissipation ribs (12) are formed on the outer wall of the housing (1), and the heat dissipation ribs (12) are arranged corresponding to the heat dissipation protrusions (11) to increase the heat dissipation area of the housing (1).

12. The HVAC motor according to claim 1, wherein, It further includes a control circuit board (5). The electronic components (2) are electrically connected to the control circuit board (5), and the main body part (21) of the electronic components (2) is arranged on the side of the control circuit board (5) facing the stator and rotor (6) of the motor.

13. The HVAC motor according to claim 12, wherein, A receiving cavity is formed in the housing (1), and the motor further includes a sealing plate (7). The sealing plate (7) is arranged in the housing (1) and axially divides the receiving cavity into a first chamber (13) and a second chamber (14). The control circuit board (5) is arranged in the first chamber (13), and the second chamber (14) is used for accommodating the stator and rotor (6).

14. The HVAC motor according to claim 13, wherein A seal (71) is arranged between the sealing plate (7) and the housing (1). The seal (71) is used for sealing the connection between the sealing plate (7) and the housing (1) to hermetically separate the first chamber (13) and the second chamber (14).

15. The HVAC motor according to claim 13, characterized in that, The housing (1) is further provided with a through hole (15) penetrating the housing (1). The through hole (15) is communicated with the first chamber (13), and the through hole (15) is arranged on the side of the first chamber (13) close to the sealing plate (7).

16. The HVAC motor according to claim 13, wherein, The housing (1) is further provided with a heat dissipation hole (171) penetrating the housing (1). The heat dissipation hole (171) is communicated with the second chamber (14), and the heat dissipation hole (171) is arranged on the side of the second chamber (14) close to the sealing plate (7) and is axially misaligned with the stator and rotor (6).

17. The HVAC motor according to claim 16, wherein The housing (1) includes a main body part (16) and a positioning part (17). The positioning part (17) protrudes inwardly towards the second chamber (14), and a part of the positioning part (17) and the main body part (16) are hollowed out so that the heat dissipation hole (171) is formed between the positioning part (17) and the main body part (16).

18. The HVAC motor according to claim 17, wherein It further includes a bearing bracket (8). The bearing bracket (8) abuts against the end face of the positioning part (17) axially; the bearing bracket (8) is provided with a hollowed-out part (81).

19. The HVAC motor according to claim 18, wherein The sealing plate (7) and the bearing bracket (8) are stacked axially along the motor, and the sealing plate (7) and the bearing bracket (8) are locked and fixed by fixing members (82).

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