A compressor

Abstract

The present invention provides a compressor, comprising: a rear shell body, a power module being provided on a first side of the rear shell body, a low-pressure refrigerant cavity being formed on a second side, and N raised heat dissipation fins being provided in a central area of the second side of the rear shell body; a secondary bearing seat covering the central area of the second side of the rear shell body; and a secondary bearing being rotatably restrained in the secondary bearing seat, wherein the second side of the rear shell body, the secondary bearing seat, and the heat dissipation fins together form (N-1) airflow channels for low-temperature refrigerant to pass through. The present invention can improve the refrigerant's ability to dissipate heat from the controller power module and can also simultaneously cool and lubricate the secondary bearing, further improving the cooling capacity of the compressor controller's components and extending the compressor's service life.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, in particular to a compressor. Background Art

[0002] The development trend of automotive electric scroll compressors is large displacement and high voltage. Large displacement compressors will increase the heat generated by the controller power module, especially under low speed, high power and low evaporation pressure conditions. The heat generated by the controller components will increase, which is a great test for the heat dissipation capacity of the controller power module. During actual operation of the compressor, it is very easy to trigger the controller's over-temperature protection or even cause the controller to burn out and shut down.

[0003] Patent CN214617019U discloses a scroll compressor with a heat dissipation structure, which includes a housing, and a top cover and a bottom cover are provided at both ends of the housing. Figure 1 As shown, a PCB controller is connected to one end of the bottom cover, and an air intake is provided on the side of the housing connected to the bottom cover for drawing in refrigerant; a fin-shaped baffle for guiding the refrigerant is provided on the air intake corresponding to the bearing seat in the bottom cover. When the refrigerant enters the housing through the air intake, the refrigerant is guided by the baffle into the bearing of the bearing seat, and finally transferred to the PCB controller through thermal grease, which has a good heat dissipation effect and increases the service life of the scroll compressor. At the same time, it can also reduce gas flow to improve the efficiency of the compressor and reduce some noise. The above patent adds a heat dissipation structure to the compressor to address the cooling problem of the controller, thereby improving the reliability of the controller, but these solutions also bring many problems. Patent CN214617019U adds a fin-shaped baffle inside the bottom cover to divert part of the refrigerant to the PCB controller. However, the limitation of this solution is that the refrigerant diverted by the fin-shaped baffle can only cool the area outside the bearing seat, and the IPM or IGBT power modules of the compressor controller are arranged in the corresponding area of the bearing seat. The low-temperature refrigerant cannot flow through the bearing seat area, so the cooling effect on the components in the corresponding area of the bearing seat is poor.

[0004] Therefore, the present invention provides a compressor that improves the cooling effect of the compressor controller. Summary of the Invention

[0005] In response to the problems in the prior art, the purpose of the present invention is to provide a compressor that overcomes the difficulties of the prior art, can improve the refrigerant's heat dissipation capacity of the controller power module, and can also cool and lubricate the secondary bearing at the same time, further improving the cooling capacity of the components of the compressor controller and increasing the service life of the compressor.

[0006] An embodiment of the present invention provides a compressor, comprising:

[0007] A rear shell body, wherein a power module is disposed on a first side of the rear shell body, a low-pressure refrigerant cavity is formed on a second side of the rear shell body, and N raised heat dissipation fins are disposed in a central area of the second side of the rear shell body;

[0008] A secondary bearing seat, covering the central area of the second side of the rear housing body;

[0009] The auxiliary bearing is rotatably limited to the auxiliary bearing seat. The second side of the rear shell body, the auxiliary bearing seat and the heat dissipation fins form (N-1) air flow channels for low-temperature refrigerant to pass through.

[0010] Preferably, the auxiliary bearing seat includes an auxiliary bearing seat body having a bearing hole, the auxiliary bearing seat body is provided with a plurality of first positioning pin holes and a plurality of first bolt through holes, and the auxiliary bearing seat body is screwed to the second side of the rear shell body.

[0011] Preferably, the second side of the rear shell body is provided with a plurality of second positioning pin holes and second threaded through holes perpendicular to the second side of the rear shell body, the first positioning pin hole and the second positioning pin hole are aligned by positioning pin insertion, and the first bolt through hole and the second threaded through hole are screwed together by fixing bolts, so that the secondary bearing seat is pressed against the end face of the heat dissipation fin.

[0012] Preferably, the second positioning pin hole and the second threaded through hole are external protruding holes, and the second positioning pin hole and the second threaded through hole are embedded in the heat dissipation fins.

[0013] Preferably, the heat dissipation fin has a side surface that cooperates to form an air flow channel and an end surface parallel to the second side of the rear shell body, and a hole is dug from the end surface of the heat dissipation fin to form the second positioning pin hole and the second threaded through hole.

[0014] Preferably, the heat dissipation fins are integrally formed on the second side of the rear shell body.

[0015] Preferably, the N heat dissipation fins are arranged parallel to each other.

[0016] Preferably, the low-pressure refrigerant cavity is further provided with an air intake port, and the low-temperature refrigerant enters the low-pressure refrigerant cavity from the air intake port.

[0017] Preferably, the air inlet faces one end of the air flow channel.

[0018] Preferably, the angle a between the circumference of the air intake port and the extension direction of the heat dissipation fins is less than 30°.

[0019] A compressor of the present invention can improve the heat dissipation capacity of the refrigerant to the controller power module, and can also cool and lubricate the auxiliary bearing at the same time, further improving the cooling capacity of the components of the compressor controller and increasing the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0021] Figure 1 It is a partial cross-sectional view of the compressor of the present invention.

[0022] Figure 2 It is an exploded view of the rear shell body and the auxiliary bearing seat of the compressor of the present invention.

[0023] Figure 3 It is a perspective view of the auxiliary bearing housing in the compressor of the present invention.

[0024] Figure 4 It is a perspective view of a rear shell body in the compressor of the present invention.

[0025] Figure 5 It is a schematic diagram of the assembled state of the rear shell body and the auxiliary bearing seat of the compressor of the present invention.

[0026] Reference numerals

[0027] 1 heat sink

[0028] 2 Power Module

[0029] 3 airflow channels

[0030] 4 Low-pressure refrigerant chamber

[0031] 5 fixing bolts

[0032] 6 pairs of bearings

[0033] 7 Locating pin

[0034] 8 Inlet

[0035] 9 Back shell body

[0036] 10. Auxiliary bearing seat

[0037] 11 bearing hole

[0038] 12 Dowel pin holes

[0039] 13 Bolt through holes

[0040] 14 Dowel pin hole

[0041] 15 threaded through hole

[0042] a Angle DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through different specific embodiments. The details in the present application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0044] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0045] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0047] In order to clearly describe the present application, components not related to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0048] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0049] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly on" another device, there are no other devices between it.

[0050] Although the terms first, second, etc. are used in some instances herein to represent various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are represented. Furthermore, as used in this article, the singular forms "one," "an," and "the" are intended to also include the plural forms, unless there is a contrary indication in the context. It should be further understood that the terms "comprise," "include," and "include" indicate the presence of features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0051] The technical terms used herein are intended only to refer to specific embodiments and are not intended to limit this application. The singular form used herein also includes the plural form unless the statement explicitly indicates otherwise. The term "comprising" as used in this specification is intended to specify specific features, regions, integers, steps, operations, elements, and / or components and does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and / or components.

[0052] Although not defined differently, all terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are to be interpreted as having meanings consistent with the relevant technical literature and current teachings, and unless otherwise defined, they should not be overly interpreted as ideal or highly formalized meanings.

[0053] Figure 1 It is a partial cross-sectional view of the compressor of the present invention. Figure 2 It is an exploded view of the rear shell body and the auxiliary bearing seat of the compressor of the present invention. Figure 3 It is a perspective view of the auxiliary bearing housing in the compressor of the present invention. Figure 4 It is a perspective view of a rear shell body in the compressor of the present invention. Figure 5Schematic diagram of the assembly state of the rear shell body and the auxiliary bearing seat of the compressor of the present invention. Figures 1 to 5 As shown, the compressor of the present invention includes a rear shell body 9 and a secondary bearing seat 10. A power module 2 is provided on the first side of the rear shell body 9, a low-pressure refrigerant cavity 4 is formed on the second side, and N raised heat dissipation fins 1 are provided in the central area of the second side of the rear shell body 9. The secondary bearing seat 10 covers the central area of the second side of the rear shell body 9. The secondary bearing 6 is rotatably limited to the secondary bearing seat 10, and the second side of the rear shell body 9, the secondary bearing seat 10 and the heat dissipation fins 1 together form N-1 air flow channels 3 for the low-temperature refrigerant to pass through. The present invention aims to improve the heat dissipation capacity of the refrigerant to the controller power module, and can also cool and lubricate the secondary bearing at the same time. By separating the secondary bearing seat structure that was originally integrated with the rear shell, and connecting and fixing the bearing seat to the shell with bolts, this structure forms a refrigerant channel that can be used for heat dissipation of the power module between the secondary bearing seat and the rear shell, and the low-temperature refrigerant sucked into the compressor can directly flow through the refrigerant channel for convection heat exchange. At the same time, in order to further improve the cooling capacity, multiple fin structures are set at the refrigerant channel to enhance the heat exchange capacity between the refrigerant and the shell.

[0054] In a preferred embodiment, the auxiliary bearing seat 10 includes an auxiliary bearing seat body having a bearing hole 11, and the auxiliary bearing seat body is provided with a plurality of first positioning pin holes 12 and a plurality of first bolt through holes 13. The auxiliary bearing seat body is screwed to the second side of the rear shell body 9, but is not limited to this.

[0055] In a preferred embodiment, the second side of the rear shell body 9 is provided with a plurality of second positioning pin holes 14 and second threaded through holes 15 perpendicular to the second side of the rear shell body 9, the first positioning pin hole 12 and the second positioning pin hole 14 are aligned by the positioning pin 7, and the first bolt through hole 13 and the second threaded through hole 15 are screwed together by the fixing bolt 5, so that the auxiliary bearing seat 10 is pressed against the end face of the heat dissipation fin 1, but it is not limited to this.

[0056] In a preferred embodiment, the second positioning pin hole 14 and the second threaded through hole 15 are external protruding holes, and the second positioning pin hole 14 and the second threaded through hole 15 are embedded in the heat dissipation fin 1 , but the present invention is not limited thereto.

[0057] In a preferred embodiment, the heat sink 1 has a side surface that cooperates to form an air flow channel 3 and an end surface parallel to the second side of the rear shell body 9, and a hole is dug from the end surface of the heat sink 1 to form a second positioning pin hole 14 and a second threaded through hole 15, but this is not limited to this.

[0058] In a preferred embodiment, the heat dissipation fins 1 are integrally formed on the second side of the rear housing body 9 , but the present invention is not limited thereto.

[0059] In a preferred embodiment, N heat dissipating fins 1 are arranged parallel to each other, but not limited thereto.

[0060] In a preferred embodiment, the low-pressure refrigerant chamber 4 is further provided with an air intake port 8 , and the low-temperature refrigerant enters the low-pressure refrigerant chamber 4 from the air intake port 8 , but the present invention is not limited thereto.

[0061] In a preferred embodiment, the air inlet 8 faces one end of the air flow channel 3 , but the present invention is not limited thereto.

[0062] In a preferred embodiment, the angle range of the angle a between the circumference of the air intake port 8 and the extension direction of the heat sink 1 is less than 30°, thereby increasing the flow rate of the low-temperature refrigerant entering the air flow channel 3 and enhancing the heat dissipation effect of the heat sink 1, but not limited to this.

[0063] Continue to refer Figure 1 、 2 As shown in Figure 3, a vehicle compressor of the present invention includes components such as a front shell, a static scroll, a movable scroll, a middle shell, a motor, a rear shell and a motor controller. Among them, the rear shell is composed of a rear shell body 9, a secondary bearing seat 10, a positioning pin and a connecting bolt. The rear shell body 9 is provided with a heat dissipation fin 1, a positioning pin hole and a threaded hole. The secondary bearing seat 10 is provided with a bearing mounting hole, a positioning pin hole and a bolt through hole. The rear shell formed after assembly includes a refrigerant channel and a heat dissipation fin 1 for enhancing the heat dissipation of the controller power module 2. When the scroll compressor starts working, the low-temperature refrigerant enters the rear shell chamber from the air intake 8, and a part of the refrigerant will pass through the air flow channel 3 formed by the main shell and the secondary bearing seat 10. The low-temperature refrigerant flowing through the air flow channel 3 takes away the heat of the controller power module 2 by means of convection heat exchange with the main shell, and the fins on the main shell play a role in enhancing heat exchange, and then the refrigerant gas is completed by heat exchange.

[0064] Figure 4 The rear shell body 9 is provided with heat dissipation fins 1, positioning pin holes and threaded holes. Figure 5 The rear housing of this patent is composed of the rear housing body 9, the auxiliary bearing seat 10, the positioning pin and the connecting bolts. Figure 4 、 5 As shown, the auxiliary bearing seat 10 is provided with a bearing mounting hole, a positioning pin hole and a bolt through hole. The rear shell body 9 and the auxiliary bearing seat 10 are assembled by positioning pins and bolts to form a rear shell, which includes a refrigerant channel and a heat dissipation fin 1 for enhancing the heat dissipation of the controller power module 2.

[0065] The present invention can provide an enhanced heat dissipation structure without changing the external structure of the compressor, thereby solving the problem of poor heat dissipation effect in the auxiliary bearing seat 10 area. Moreover, the auxiliary bearing seat 10 in the present invention is detachable, and the same rear shell body 9 can be adapted to auxiliary bearing seats 10 of different sizes.

[0066] In summary, the purpose of the present invention is to provide a compressor that can improve the heat dissipation capacity of the refrigerant to the controller power module, and can also cool and lubricate the secondary bearing at the same time, further improve the cooling capacity of the components of the compressor controller, and increase the service life of the compressor.

[0067] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: include: A rear shell body (9), wherein a power module (2) is provided on a first side of the rear shell body (9), a low-pressure refrigerant cavity (4) is formed on a second side, and N raised heat dissipation fins (1) are provided in a central area of the second side of the rear shell body (9), and the N heat dissipation fins (1) are arranged parallel to each other; A secondary bearing seat (10) covers the central area of the second side of the rear housing body (9); The auxiliary bearing (6) is rotatably limited to the auxiliary bearing seat (10), and the second side of the rear shell body (9), the auxiliary bearing seat (10) and the heat dissipation fins (1) are enclosed to form (N-1) air flow channels (3) for the low-temperature refrigerant to pass through. The auxiliary bearing seat (10) includes an auxiliary bearing seat body with a bearing hole (11), and the auxiliary bearing seat body is provided with a plurality of first positioning pin holes (12) and a plurality of first bolt through holes (13). The auxiliary bearing seat body is screwed to the rear shell The second side of the main body (9) is provided with a plurality of second positioning pin holes (14) and second threaded through holes (15) perpendicular to the second side of the rear shell main body (9), the first positioning pin hole (12) and the second positioning pin hole (14) are aligned by means of a positioning pin (7), the first bolt through hole (13) and the second threaded through hole (15) are screwed together by means of a fixing bolt (5), so that the auxiliary bearing seat (10) is pressed against the end face of the heat dissipating fin (1).

2. The compressor according to claim 1, wherein The second positioning pin hole (14) and the second threaded through hole (15) are external convex holes, and the second positioning pin hole (14) and the second threaded through hole (15) are embedded in the heat dissipation fin (1).

3. The compressor according to claim 1, wherein The heat dissipation fin (1) has a side surface that cooperates to form an air flow channel (3) and an end surface that is parallel to the second side of the rear shell body (9), and a hole is dug from the end surface of the heat dissipation fin (1) to form the second positioning pin hole (14) and the second threaded through hole (15).

4. The compressor according to claim 1, wherein The heat dissipation fins (1) are integrally formed on the second side of the rear shell body (9).

5. The compressor according to claim 1, wherein The low-pressure refrigerant cavity (4) is also provided with an air intake (8), and the low-temperature refrigerant enters the low-pressure refrigerant cavity (4) from the air intake (8).

6. The compressor according to claim 5, characterized in that The air inlet (8) faces one end of the air flow channel (3).

7. The compressor according to claim 5, wherein The angle a between the circumference of the air intake port (8) and the extension direction of the heat dissipation fins (1) is less than 30°.

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