Automobile heat pump

Abstract

The present invention provides a heating pump for an automobile, comprising a pump cover, a base, a pump body, and a heater. The pump cover is disposed on the base to form an accommodating space, and the pump body and heater are disposed within the accommodating space. The pump body comprises an impeller, a rotor, a stator, and a pump housing. The rotor and stator are disposed within the pump housing. The pump housing comprises at least one preheating inlet channel and at least one preheating outlet channel separated by a plurality of preheating spacers. One end of the at least one preheating inlet channel is connected to a volute, and the other end of the at least one preheating inlet channel is connected to the inlet end of the at least one preheating outlet channel. Two flow channels are formed inside and outside the heater. Pump liquid output from the volute passes through the at least one preheating inlet channel, the at least one preheating outlet channel, and the two flow channels, and is discharged through the outlet of the heating pump. The heating pump of the present application absorbs and removes heat generated by the stator, thereby increasing the service life of the stator.

Description

Technical Field

[0001] The present invention relates to the field of automobile devices, and in particular to a heat pump installed in a thermal management system of an automobile, which serves to increase the temperature of a battery to ensure the electrical performance of the battery and can also be used for auxiliary heating in a warm air system. Background Art

[0002] With the development of science and technology, automotive products are changing with each passing day, placing higher demands on these products. Auto parts are a key area for my country's automotive industry to participate in globalization. In response to the rapid development of electronic technology and its widespread application in the automotive industry, the degree of electronicization in automobiles is increasing, and the requirements for automotive safety are also becoming increasingly strict.

[0003] Existing heat pumps are used in cold environments in power supply thermal management systems for electric vehicles and other facilities. They use electric pumps to drive thermal fluid to raise battery temperature to ensure battery performance. They are also used in heating systems for auxiliary heating. Patent No. 202110862913.4 proposes an electric pump for electric vehicle power supply thermal management systems. This type of pump uses direct heating, but the stator assembly has poor heat dissipation.

[0004] Therefore, there is room for improvement in the heating pumps of the prior art. Summary of the Invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a heat pump for use in a thermal management system of an automobile, which has good stability and uses the heat generated by the stator for preheating, thereby improving the poor heat dissipation effect of the stator and solving the existing technical problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A heating pump for automobile, comprising a pump cover, a base, a pump body and a heater, wherein the pump cover is arranged on the base to form an accommodating space, and the pump body and the heater are arranged in the accommodating space; wherein the pump body comprises an impeller, a rotor, a stator and a pump body casing, wherein the impeller axially drives the volute to drive the pump liquid; the impeller is arranged on the rotor, and the rotor and the stator are arranged in the pump body casing; the pump body casing comprises at least one preheating liquid inlet channel and at least one preheating liquid outlet channel separated by a plurality of preheating spacers, and the at least one preheating spacer is provided. One end of the liquid inlet channel is connected to the volute chamber, and the other end of the at least one preheating liquid inlet channel is connected to the inlet end of the at least one preheating liquid outlet channel; the heater is cylindrical, and the heater is located between the pump body and the inner wall of the pump cover, dividing the space therebetween into two flow channels that are directly connected to the outlet end of the at least one preheating liquid outlet channel or the discharge port of the heating pump for the pump liquid to pass through; the pump liquid output from the volute chamber passes through the at least one preheating liquid inlet channel, the at least one preheating liquid outlet channel and the two flow channels and is discharged through the discharge port of the heating pump.

[0008] According to the automobile heat pump described in the preferred embodiment of the present application, the two flow channels are an inner peripheral flow channel located at the inner periphery of the heater and an outer peripheral flow channel located at the outer periphery of the heater.

[0009] According to the automobile heating pump described in the preferred embodiment of the present application, the inner peripheral flow channel and the outer peripheral flow channel are connected to at least one of the pump cover and the base.

[0010] According to the automotive heating pump described in the preferred embodiment of the present application, the pump body shell also includes a plurality of spaced inner partitions arranged along the circumference, which divide the inner flow channel into multiple sections of spiral flow channels; the outer flow channel is provided with a plurality of spaced outer partitions along the circumference, which divide the outer flow channel into multiple sections of spiral flow channels; the downstream of each section of the spiral flow channel of the inner flow channel leads to the upstream of each section of the spiral flow channel of the outer flow channel in sequence at one end of the accommodating space, and the downstream of each section of the spiral flow channel of the outer flow channel leads to the upstream of each section of the spiral flow channel of the inner flow channel in sequence at the other end of the accommodating space; and one of the above-mentioned full processes is connected: its upstream leads to the outlet end of the preheating liquid outlet channel, and its downstream leads to the discharge port of the heating pump.

[0011] According to the automotive heating pump described in the preferred embodiment of the present application, the pump body shell also includes a rotor spacer, a stator spacer and an outer shell piece, the rotor spacer is a cup body, and the rotor is arranged in the rotor spacer; the stator spacer is a cylindrical body, the upper end of the stator spacer is connected to the open end of the rotor spacer, the lower end of the stator spacer is connected to the base, and the stator is arranged between the stator spacer and the rotor spacer; the outer shell piece is a cylindrical body, and the outer shell piece is connected to the stator spacer through the multiple preheating spacers.

[0012] According to the automotive heat pump described in the preferred embodiment of the present application, the multiple preheating spacers are axially arranged sheets.

[0013] According to the automotive heat pump described in the preferred embodiment of the present application, the rotor spacer, stator spacer, preheating spacer, outer shell body and inner peripheral partition are integrally formed.

[0014] According to the automotive heating pump described in the preferred embodiment of the present application, the peripheral partition includes a first peripheral partition and two second peripheral partitions, wherein the first peripheral partition is an arc-shaped sheet, one end of the first peripheral partition includes an upper end block with a groove, one end face of the heater is inserted into and connected to the groove, the other end of the first peripheral partition includes a plane body, and the plane body is inserted into the connecting groove connected to the lead wire sealing cover; one end of the second peripheral partition includes an upper end block with a groove, the other end of the second peripheral partition includes a lower end block with a through hole, and the through hole of the second peripheral partition is connected to the base via a fastener.

[0015] According to the automotive heat pump described in the preferred embodiment of the present application, the upper end block is an end portion of the two flow channels on both sides of the groove.

[0016] The technical solution of the present application improves the existing heat pump for the thermal management system of an automobile, and designs a heat pump that uses the heat generated by the stator to preheat the pump liquid. Under this design, the pump body shell includes a preheating channel and a partition used for the inner peripheral flow channel, which reduces the number of parts. In addition, after the pump liquid enters from the suction port, it directly enters the flow channel where the stator is assembled to absorb and take away the heat generated by the stator, thereby improving the problem of poor heat dissipation effect of the stator and increasing the service life of the stator.

[0017] Due to the adoption of the above technical features, the present invention has the following advantages and positive effects compared with the prior art:

[0018] First, the heat pump of the present application uses the heat generated by the stator to preheat the pump liquid;

[0019] Second, the heat pump of the present application absorbs and removes the heat generated by the stator, thereby increasing the working life of the stator;

[0020] Third, the pump housing of the present application integrates the preheating channel and the partition used for the inner peripheral flow channel, which reduces the number of parts and improves the competitiveness of the enterprise.

[0021] Of course, any specific embodiment of the present invention does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the heating pump for this application;

[0023] Figure 2 A schematic cross-sectional view of the heat pump of this application;

[0024] Figure 3 This is an explosion diagram of the heat pump of this application;

[0025] Figure 4 This is a three-dimensional schematic diagram of the pump housing of this application;

[0026] Figure 5 for Figure 4 Schematic diagram from above;

[0027] Figure 6 This is a three-dimensional schematic diagram of the heater for this application;

[0028] Figure 7 This is a bottom view of the pump cover of this application;

[0029] Figure 8 This is a bottom view of the pump cover of the present application from another angle;

[0030] Figure 9 A schematic diagram of the base of this application;

[0031] Figure 10 This is a schematic diagram of the base combined with the heater of this application;

[0032] Figure 11 Schematic diagram of the pump body, heater and flow channel of this application;

[0033] Figure 12 for Figure 11 A schematic cross-sectional view of the center of

[0034] Figure 13 A schematic diagram of the pump liquid flow direction in the inner peripheral flow channel of this application;

[0035] Figure 14 A schematic diagram of the pump liquid flow direction of the peripheral flow channel of this application;

[0036] Figure 15 This is a schematic diagram of the peripheral partition of this application;

[0037] Figure 16 This is a schematic diagram of the connection of the peripheral partition of this application;

[0038] Figure 17 This is a schematic diagram of the explosion of some peripheral partitions in this application. DETAILED DESCRIPTION

[0039] Several preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention encompasses any alternatives, modifications, equivalent methods, and solutions that are not inconsistent with the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and the like are not described in detail.

[0040] Please also refer to Figure 1 and Figure 2 The schematic diagram of the appearance of the heating pump of the present application and the schematic diagram of the cross-section of the heating pump are provided. The automobile heating pump of the present application is installed in the thermal management system of the automobile, which can increase the temperature of the battery to ensure the electrical performance of the battery. It can also be used in auxiliary heating of the warm air system and devices that need to maintain the operating environment temperature; the heating pump includes a pump cover 10, a base 20, a pump body 30 and a heater 40. The pump cover 10 is a cover body arranged on the base 20 to form an accommodating space. In the embodiment of the present application, the pump cover 10 is locked to the base 20 with bolts, but it cannot be used to limit the present application. As long as it is a fastener that can be locked, it should be within the scope of protection of the present application; the pump body 30 and the heater 40 are arranged in the accommodating space, and the heater 40 is on the periphery of the pump body 30.

[0041] Among them, such as Figure 3 As shown in the exploded schematic diagram of the heating pump of the present application, the pump body 30 includes an impeller 31, a rotor 32, a stator 33 and a pump body casing 34. The impeller 31 is axially driven in the volute 13 to drive the pump liquid; the impeller 31 is arranged on the rotor 32. When working, the impeller 31 rotates driven by the rotor 32 so that the pump liquid enters the volute 13 from the suction port 11; the rotor 32 and the stator 33 are arranged in the pump body casing 34.

[0042] Please also refer to Figure 4 and Figure 5A three-dimensional schematic diagram of the pump housing of the present application shows that the pump housing 34 includes at least one preheating liquid inlet channel 346 and at least one preheating liquid outlet channel 347 separated by a plurality of preheating spacers 343. One end of the at least one preheating liquid inlet channel 346 is connected to the volute chamber 13, and the other end of the at least one preheating liquid inlet channel 346 is connected to the inlet end of the at least one preheating liquid outlet channel 347. In the embodiment of the present application, the number of the preheating spacers 343 is four, the number of the separated preheating liquid inlet channels 346 is three, and the number of the preheating liquid outlet channel 347 is one, but this is not intended to limit the present application. As long as the number of preheating spacers can ensure the smooth flow of pump liquid, it should be within the scope of protection of the present application. Figure 4 The liquid in the middle pump enters from the upper end of the preheating liquid inlet channel 346. Figure 5 Since the length of the preheating spacer 343 is not as long as the length of the walls connected to it on both sides, the pump liquid in the three preheating liquid inlet channels 346 converges at the lower end of the preheating liquid inlet channel 343, and then enters from the lower end of the preheating liquid outlet channel 347 (that is, the inlet end of the preheating liquid outlet channel 347) and exits from the upper end of the preheating liquid outlet channel 347 (that is, the outlet end of the preheating liquid outlet channel 347); in this three-inlet and one-outlet flow channel, the pump liquid brings the heat generated by the stator 33 out and enters the next process, which is a preheating process.

[0043] Please refer to Figure 6 A three-dimensional diagram of the heater of this application, wherein the heater 40 is cylindrical. Figure 2 The heater 40 is located between the pump body 30 and the inner wall of the pump cover 10, dividing the space therebetween into two flow channels that are directly connected to the outlet end of the at least one preheating liquid outlet channel 347 or the discharge port 12 of the heating pump for the pump liquid to pass through; as described above, the pump liquid converges at the lower end of the preheating spacer 343 and comes out from the upper end of the preheating liquid outlet channel 347, that is, overflows from the preheating liquid outlet channel 347 toward one end of the pump cover 10 and enters the two flow channels; in general, the pump liquid output from the volute 13 passes through the at least one preheating liquid inlet channel 346, the at least one preheating liquid outlet channel 347 and the two flow channels and is discharged through the discharge port 12 of the heating pump.

[0044] Explain the pump liquid flow mode of the preheating channel of this application, such as Figure 5 As shown, in addition to the preheating spacer 343, the pump body shell 34 also includes a rotor spacer 341, a stator spacer 342, an outer shell piece 344 and a plurality of inner circumferential partitions 345. The rotor spacer 341, the stator spacer 342, the preheating spacer 343, the outer shell piece 344 and the plurality of inner circumferential partitions 345 are integrally formed; please also refer to Figure 7 and Figure 8The bottom view of the pump cover of the present application shows that the bottom surface of the pump cover 10 includes a plurality of rib structures, including a volute chamber rib 14 with a notch, a preheating liquid inlet rib 15, a preheating liquid outlet rib 16, a discharge outlet rib 17, two liquid outlet flow channel ribs 18 and a flow channel rib 19. The volute chamber rib 14 covers the connecting piece between the end of the rotor spacer 341 and the stator spacer 342 to form the volute chamber 13; the preheating liquid inlet rib 15 covers the outer shell piece 344 connected to form the preheating liquid inlet channel 346 to form a flow channel, and the pump liquid coming out of the volute chamber 13 enters the preheating liquid inlet channel 346 through this flow channel; the preheating liquid outlet rib 16 corresponds to the outer shell piece 344 forming the preheating liquid outlet channel 347, and the preheating liquid outlet rib 16 is a middle low The convex ribs are high at both ends, so there is a gap between the preheating liquid outlet convex rib 16 and the end surface of the outer shell sheet 344 of the preheating liquid outlet channel 347. When the pump liquid passes through the preheating liquid outlet channel 347 and reaches the pump cover 10, it flows out from this gap; the height of the discharge port convex rib 17 is higher than the height of the two liquid outlet flow channel convex ribs 18; one end of the two liquid outlet flow channel convex ribs 18 is connected to the inner wall of the pump cover 10, and the other end of the two liquid outlet flow channel convex ribs 18 is connected to the volute chamber convex rib 14, and the middle of the two liquid outlet flow channel convex ribs 18 are respectively connected to the two ends of the preheating liquid inlet convex rib 15, the two ends of the preheating liquid outlet convex rib 16 and the two ends of the discharge port convex rib 17; one end of the flow channel convex rib 19 is connected to the inner wall of the pump cover 10, and the other end of the flow channel convex rib 19 is connected to the middle of the preheating liquid inlet convex rib 15; Figure 7 It can be seen that the liquid outlet channel convex rib 18 and the channel convex rib 19 are convex ribs extending from the inner wall of the pump cover 10 toward the center of the circle. The two liquid outlet channel convex ribs 18 and the one channel convex rib 19 are evenly distributed on the bottom surface of the pump cover 10. The two liquid outlet channel convex ribs 18 and the one channel convex rib 19 are combined with the preheating liquid inlet convex rib 15 to form two pump cover end surface interconnected flow channels 110, and the pumped liquid can flow in the pump cover end surface interconnected flow channels 110; the two liquid outlet channel convex ribs 18, the discharge outlet convex rib 17 and the inner wall of the pump cover 10 form a discharge outlet flow channel 111, and the pumped liquid can flow to the discharge outlet 12 in the discharge outlet flow channel 111.

[0045] Please also refer to Figure 9 and Figure 10 Schematic diagram of the base of the present application. The center of the base 20 of the present application includes a convex step 21 formed by two hollow annular bodies. Figure 2The upper annular body in the convex step 21 is inserted into the stator spacer 342. For sealing, a sealing ring can be set between the two to prevent the pump liquid from entering the stator spacer 342 and affecting the operation of the stator 33. The lower annular body in the convex step 21 is inserted into the outer shell 344. The space between the two is already full of pump liquid, so there is no need to set a sealing ring. In addition, Figure 9 The base 20 of the lower annular body surrounding the convex step 21 is provided with three grooves for communicating with the flow passage 22 on the end surfaces of the base. Figure 10 The assembled heater 40 straddles the three base end surface intercommunication channels 22 , and the pump liquid in the inner and outer peripheries of the heater 40 can flow through the base end surface intercommunication channels 22 .

[0046] Please also refer to Figure 11 and Figure 12 , the two flow channels are an inner peripheral flow channel 51 located on the inner periphery of the heater 40 and an outer peripheral flow channel 52 located on the outer periphery of the heater 40; the inner peripheral flow channel 51 and the outer peripheral flow channel 52 are connected to at least one of the pump cover 10 and the base 20, and the multiple inner peripheral partitions 345 are multiple spacing plates arranged along the circumference to separate the inner peripheral flow channel 51 into multiple sections of spiral flow channels. In the embodiment of the present application, the number of the inner peripheral partitions 345 is three, forming three sections of spiral flow channels and is a part of the pump body shell 34 made of one piece, but it cannot be used to limit the present invention. Application, in addition, the outer edge of the inner partition 345 is fitted and connected to the inner wall of the heater 40, and the pump liquid will not leak from therebetween; the peripheral flow channel 52 is provided with a plurality of spaced peripheral partitions 521 along the circumference to divide the peripheral flow channel 52 into multiple sections of spiral flow channels. In the embodiment of the present application, the number of the peripheral partitions 521 is three to form three sections of spiral flow channels and the peripheral partitions 521 are externally mounted, but cannot be used to limit the present application. The inner edge of the peripheral partition 521 is fitted and connected to the outer wall of the heater 40, and the pump liquid will not leak from therebetween.

[0047] Please also refer to Figure 13 and Figure 14The schematic diagram of the pump liquid flow direction of the inner peripheral flow channel of the present application and the schematic diagram of the pump liquid flow direction of the outer peripheral flow channel, the arrow direction in the figure is the pump liquid flow direction; the downstream of each section of the spiral flow channel of the inner peripheral flow channel 51 is at one end of the accommodating space, which is one end of the base 20 in the embodiment of the present application, and leads to the upstream of each section of the spiral flow channel of the outer peripheral flow channel 52 in sequence; the downstream of each section of the spiral flow channel of the outer peripheral flow channel 52 is at the other end of the accommodating space, which is one end of the pump cover 10 in the embodiment of the present application, and leads to the upstream of each section of the spiral flow channel of the inner peripheral flow channel 51 in sequence; and, one of the above-mentioned full processes is connected as follows: its upstream leads to the outlet end of the preheating liquid outlet channel 347, and its downstream leads to the outlet 12 of the heating pump. The multiple sections of the inner peripheral flow channel 51 and the peripheral flow channel 52 are connected end to end in sequence to form a flow channel for the pump liquid to pass through, combined with Figure 2 、 Figure 7 、 Figure 10 、 Figure 13 and Figure 14 The flow path of the pump liquid of the present application is as follows: the pump liquid enters the volute chamber 13 from the suction port 11, moves horizontally from the volute chamber 13 through the flow channel formed by the preheating liquid inlet rib 15, enters the preheating liquid inlet channel 346, and then moves downward to merge at the lower end of the preheating spacer 343, that is, merge at the horizontal step of the convex step 21, and then moves upward from the lower end of the preheating liquid outlet channel 347 to the upper end of the preheating liquid outlet channel 347. The pump liquid that reaches here flows out from the gap between the preheating liquid outlet rib 16 and the outer shell piece 344 and enters the starting point of the inner peripheral flow channel 51. The pump liquid in the inner peripheral flow channel 51 flows downward, and when it enters the intercommunication flow at the end face of the base After passing through the channel 22, the pump liquid flows from the inner periphery of the heater 40 to the outer periphery and enters the outer peripheral flow channel 52. The pump liquid in the outer peripheral flow channel 52 flows upward, and after entering the interconnecting flow channel 110 on the end face of the pump cover, it flows from the outer periphery of the heater 40 to the inner periphery and enters the inner peripheral flow channel 51. After flowing from the inner periphery to the outer periphery and entering the peripheral flow channel 52 for the third time, the pump liquid flows upward to the discharge flow channel 111. The height of the discharge rib 17 here is higher than the height of the two liquid outlet flow channel ribs 18, and the raised part of the discharge rib 17 is in contact with the inner wall of the heater 40. The pump liquid cannot cross the discharge rib 17 and can only flow from the discharge flow channel 111 to the discharge port 12.

[0048] like Figure 2 and Figure 12As shown, the rotor spacer 341 is a cup body, and the rotor 32 is arranged in the cup body of the rotor spacer 341; the stator spacer 342 is a cylindrical body, the upper end of the stator spacer 342 is connected to the open end of the rotor spacer 341, and the lower end of the stator spacer 342 is connected to the base 20, and the stator 33 is arranged between the stator spacer 342 and the rotor spacer 341 at a position corresponding to the rotor 32; the outer shell piece 344 is a cylindrical body, and the outer shell piece 344 is connected to the stator spacer 342 through the multiple preheating spacers 343. In the embodiment of the present application, the multiple preheating spacers 343 are axially arranged sheets and are straight sheets. The lower ends of the multiple preheating spacers 343 are at a distance from the base 20, so the preheating channel formed is a straight up and down channel, but it cannot be used to limit the present application. For example, if an inclined sheet is designed to form an inclined channel, as long as the pump liquid can flow smoothly, it should be within the scope of protection of the present application.

[0049] like Figure 10 As shown, in order to prevent the power supply of the heater 40 from being immersed in the pump liquid and causing damage, we set a lead wire sealing cover 60 at the power supply lead of the heater 40. Since the lead wire sealing cover 60 affects the arrangement of one of the peripheral partitions, the peripheral partition 521 of the present application includes a first peripheral partition 5211 and two second peripheral partitions 5212, as shown in FIG. Figure 15 、 Figure 16 and Figure 17 As shown, the first peripheral partition 5211 is an arc-shaped sheet, one end of the first peripheral partition 5211 includes an upper end block 53 with a groove 531, and the other end of the first peripheral partition 5211 includes a plane body 54, and the plane body 54 is inserted into the connecting groove 61 connected to the lead wire sealing cover 60; one end of the second peripheral partition 5212 includes an upper end block 53 with a groove 531, and the other end of the second peripheral partition 5212 includes a lower end block 55 with a through hole 551, and the through hole 551 of the second peripheral partition 5212 is connected to the base 20 through a fastener, and one end face of the heater 40 is inserted into the groove 531.

[0050] Please also refer to Figure 16 and Figure 17 After assembly, the upper block 53 is located at one end of each of the two flow channels on both sides of the groove 531. Figure 16It can be seen that the groove 531 is mounted on the end face of the heater 40, and the portion of the upper end block 53 on one side of the inner peripheral flow channel 51 respectively abuts against the outer wall of the outer shell sheet 344, the inner wall of the heater 40 and the end face of the inner peripheral partition 345 to form a barrier to prevent the pump liquid from flowing between the two adjacent inner peripheral flow channels 51. In addition, the portion of the upper end block 53 on one side of the outer peripheral flow channel 52 respectively abuts against the outer wall of the heater 40, the inner wall of the pump cover 10 and the end face of the peripheral partition 521 to form a barrier to prevent the pump liquid from flowing between the two adjacent outer peripheral flow channels 52. Combined with the bottom surface structure of the pump cover 10, After the pump liquid enters the interconnecting flow channel 110 on the end face of the pump cover from the outer peripheral flow channel 52, it is blocked on both sides by the upper end block 53 and can only flow from the outer peripheral flow channel 52 to the inner periphery and enter the inner peripheral flow channel 51. However, it should be noted that in the embodiment of the present application, after flowing from the inner periphery to the outer periphery for the third time and entering the outer peripheral flow channel 52, the pump liquid flows upward to the discharge flow channel 111, where the height of the discharge rib 17 is higher than the height of the two liquid outlet flow channel ribs 18, and the raised part of the discharge rib 17 is in contact with the inner wall of the heater 40, so the pump liquid cannot cross the discharge rib 17 and can only flow from the discharge flow channel 111 to the discharge port 12.

[0051] It should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0052] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0054] In summary, due to the adoption of the above technical features, the present invention has the following advantages and positive effects compared with the prior art:

[0055] First, the heat pump of the present application uses the heat generated by the stator to preheat the pump liquid;

[0056] Second, the heat pump of the present application absorbs and removes the heat generated by the stator, thereby increasing the working life of the stator;

[0057] Third, the pump housing of the present application integrates the preheating channel and the partition used for the inner peripheral flow channel, which reduces the number of parts and improves the competitiveness of the enterprise.

[0058] The preferred embodiments of the invention are only used to help illustrate the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can make good use of the invention. The present invention is only limited by the claims and their full scope and equivalents. The above disclosure is only the preferred embodiment of the present invention, but it is not intended to limit itself. Any equivalent changes and modifications made by any person skilled in the art without violating the spirit and connotation of the invention should fall within the scope of protection of the present invention.

Claims

1. A heating pump for automobile, characterized in that: The heating pump includes a pump cover, a base, a pump body and a heater, the pump cover is arranged on the base to form an accommodating space, and the pump body and heater are arranged in the accommodating space; wherein, the pump body includes an impeller, a rotor, a stator and a pump body casing, the impeller axially transmits the power to the volute chamber to drive the pump liquid; the impeller is arranged on the rotor, and the rotor and the stator are arranged in the pump body casing; the pump body casing includes at least one preheating liquid inlet channel and at least one preheating liquid outlet channel separated by a plurality of preheating spacers, one end of the at least one preheating liquid inlet channel is connected to the volute chamber, and the other end of the at least one preheating liquid inlet channel is connected to the inlet of the at least one preheating liquid outlet channel end; the heater is cylindrical and is located between the inner wall of the pump body and the pump cover, dividing the space therebetween into two flow channels which are directly connected to the outlet end of the at least one preheating liquid outlet channel and the discharge port of the heating pump for the pump liquid to pass through; the pump liquid output by the volute chamber passes through the at least one preheating liquid inlet channel, the at least one preheating liquid outlet channel and the two flow channels and is discharged through the discharge port of the heating pump; the two flow channels are an inner peripheral flow channel located on the inner periphery of the heater and an outer peripheral flow channel located on the outer periphery of the heater; the inner peripheral flow channel and the outer peripheral flow channel are connected to at least one of the pump cover and the base; the multiple preheating spacers are axially arranged sheets and are straight sheets.

2. The automotive heat pump according to claim 1, wherein: The pump body shell also includes a rotor spacer, a stator spacer and an outer shell piece. The rotor spacer is a cup-shaped body, and the rotor is arranged in the rotor spacer; the stator spacer is a cylindrical body, the upper end of the stator spacer is connected to the open end of the rotor spacer, and the lower end of the stator spacer is connected to the base, and the stator is arranged between the stator spacer and the rotor spacer; the outer shell piece is a cylindrical body, and the outer shell piece is connected to the stator spacer through the multiple preheating spacers.

3. The automotive heat pump according to claim 2, wherein: The pump body shell also includes a plurality of spaced inner circumferential partitions arranged along the circumference, which divide the inner circumferential flow channel into multiple sections of spiral flow channels. The rotor partitions, stator partitions, preheating partitions, outer shell pieces and inner circumferential partitions are integrally formed.

4. The automotive heat pump according to claim 3, wherein: The peripheral flow channel is provided with a plurality of spaced peripheral partitions along the circumference, dividing the peripheral flow channel into multiple sections of spiral flow channels; the peripheral partition includes a first peripheral partition and two second peripheral partitions, wherein the first peripheral partition is an arc-shaped sheet, one end of the first peripheral partition includes an upper end block with a groove, one end face of the heater is inserted into the groove, and the other end of the first peripheral partition includes a plane body, which is inserted into the connecting groove of the lead-out wire sealing cover; one end of the second peripheral partition includes an upper end block with a groove, and the other end of the second peripheral partition includes a lower end block with a through hole, and the through hole of the second peripheral partition is connected to the base via a fastener.

5. The automotive heat pump according to claim 4, wherein: The upper end blocks are respectively located at two ends of the two flow channels on both sides of the groove.

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