Pump body, horizontal compressor and vehicle

Abstract

The utility model provides a pump body, which is applied to a compressor and comprises an air cylinder, the crankshaft is provided with an eccentric part arranged in the cylinder; the bearing is arranged on the side edge of the air cylinder in the axial direction of the crankshaft and supports the crankshaft, the bearing is provided with an oil outlet end face communicated with the air cylinder and an oil suction channel communicated with the oil outlet end face, and the oil suction channel is provided with an oil suction hole communicated with the oil pool; the piston is connected with the eccentric part, one end, in the axial direction of the crankshaft, of the piston is attached to the oil outlet end face, an oil storage space is formed between the bearing and the eccentric part and communicates with the low-pressure cavity, and the piston is driven by the crankshaft to eccentrically rotate and intermittently communicates with the oil storage space and the oil outlet end face. According to the utility model, each friction pair is sufficiently lubricated, the abrasion is reduced, the service life is prolonged, the intermittent oil flow design is favorable for controlling the supply speed of lubricating oil, and unsmooth oil return caused by too fast oil supply is prevented, so that the operation efficiency of the compressor under different loads and working conditions is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a pump body, a horizontal compressor and a vehicle. Background Art

[0002] Horizontal compressors are widely used in electric vehicles. Their basic structure features a high-low back-pressure design, with the compression assembly and oil sump located on the high-pressure side, and the motor assembly on the low-pressure side. During operation, the compression of refrigerant gas causes relative motion between the compressor's internal components, generating friction. Therefore, a proper lubricating oil supply is crucial for the reliable operation of these components and directly impacts the compressor's performance and lifespan.

[0003] Current lubrication systems rely on high- and low-pressure differentials within the compressor to supply and recover lubricant. While this design meets basic requirements under static conditions, in practice, the driving state of electric vehicles, changing road conditions, and fluctuating temperatures can lead to unstable oil supply within the compressor. This instability can lead to insufficient lubrication, which can affect compressor efficiency, increase wear, and even cause failure.

[0004] Therefore, designing a lubrication solution that can ensure stable oil supply has become a key technical issue to improve the reliability and stability of horizontal compressors. Utility Model Content

[0005] In response to the problems in the prior art, the purpose of the present utility model is to provide a pump body, a horizontal compressor and a vehicle. The pump body design aims to overcome the difficulties of the prior art by optimizing the layout and structure of the oil suction channel, and solve the problem of unstable lubricating oil supply caused by high and low pressure differences in the prior art, thereby improving the reliability and working stability of the compressor under various working conditions.

[0006] The utility model provides a pump body, which is applied to a compressor and includes:

[0007] cylinder;

[0008] A crankshaft having an eccentric portion disposed in the cylinder;

[0009] The bearing is arranged on the side of the cylinder along the axial direction of the crankshaft and supports the crankshaft. The bearing is provided with an oil outlet end surface connected to the cylinder and an oil suction channel connected to the oil outlet end surface. The oil suction channel is provided with an oil suction hole connected to the oil pool of the compressor;

[0010] The piston is connected to the eccentric part, and one end of the piston in the axial direction of the crankshaft is in contact with the oil outlet end face. An oil storage space is formed between the bearing and the eccentric part. The oil storage space is connected to the low-pressure chamber of the compressor through the oil groove of the bearing and the through hole of the crankshaft. The piston is driven by the crankshaft to rotate eccentrically and intermittently connects the oil storage space and the oil outlet end face.

[0011] In some embodiments, the bearing includes a main bearing and a secondary bearing, and the oil suction channel is separately provided in the main bearing or the secondary bearing, or both the main bearing and the secondary bearing are provided with the oil suction channel.

[0012] In some embodiments, the oil suction channel has an inclination angle relative to the bottom ranging from -35° to 35°.

[0013] In some embodiments, there is at least one oil suction channel.

[0014] In some embodiments, one end of the oil suction channel is extended to the oil outlet end surface to form an oil outlet hole, and the piston is configured to rotate eccentrically in a manner to intermittently open the oil outlet hole.

[0015] In some embodiments, the oil suction hole is provided on the peripheral surface of the bearing.

[0016] In some embodiments, the bearing has a protrusion, and the oil suction hole is provided on the peripheral surface of the protrusion.

[0017] In some embodiments, the pump body also includes an intermediate plate, the cylinder includes a first cylinder and a second cylinder, the intermediate plate is arranged between the first cylinder and the second cylinder along the axial direction of the crankshaft, the piston includes a first piston and a second piston, the eccentric part includes a first eccentric part and a second eccentric part, the first piston is connected to the first eccentric part and is arranged in the first cylinder, and the second piston is connected to the second eccentric part and is arranged in the second cylinder.

[0018] Another aspect of the present invention also provides a horizontal compressor, including a front housing assembly, a rear housing assembly, a middle partition, a motor component and a pump body of any of the above items, the rear housing assembly and the front housing assembly are connected to both sides of the middle partition, the rear housing assembly includes a high-pressure chamber, and the front housing assembly includes a low-pressure chamber; the motor component is arranged in the low-pressure chamber, the pump body is arranged in the high-pressure chamber, the crankshaft passes through the high-pressure chamber into the low-pressure chamber and is connected to the motor component, and the oil pool is arranged in the high-pressure chamber.

[0019] Another aspect of the present invention provides a vehicle, comprising the above-mentioned horizontal compressor.

[0020] In summary, this utility model intermittently draws lubricating oil into the oil reservoir by providing an oil suction channel on the bearing, ensuring that each friction pair is always adequately lubricated, reducing wear and extending service life. This intermittent oil flow design helps control the lubricating oil supply rate, preventing poor oil return caused by excessive oil supply, thereby improving the compressor's operating efficiency under different loads and operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0022] Figure 1 This is a cross-sectional view of a pump body according to an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of the

[0024] Figure 3 This is a structural diagram of a first embodiment of a bearing according to the present utility model;

[0025] Figure 4 This is a second structural diagram of a bearing according to an embodiment of the present utility model;

[0026] Figure 5 This is a third structural diagram of a bearing according to an embodiment of the present utility model;

[0027] Figure 6 It is a cross-sectional view of the first horizontal compressor of the embodiment of the utility model;

[0028] Figure 7 It is a cross-sectional view of a second horizontal compressor according to an embodiment of the present utility model.

[0029] Among them, 100a-first cylinder, 100b-second cylinder, 110-middle plate, 200-crankshaft, 210a-first eccentric part, 210b-second eccentric part, 310a-first piston, 310b-second piston, 410a-first bearing, 410b-second bearing, 411a-first oil outlet end face, 411b-second oil outlet end face, 412-oil suction channel, 412a-first oil suction channel, 412b-second oil suction channel, 413-oil suction hole, 413a-first oil suction hole, 413b-second oil suction hole, 414-oil outlet hole, 415-bump, 510-oil pool, 600-front housing assembly, 610-motor component, 700-middle partition, 800-rear housing assembly. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] It should be further understood that the terms "comprise" 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. Thus, "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 occur only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0037] 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.

[0038] The embodiment of the present invention provides a pump body, which is applied to a compressor and mainly includes key components such as a cylinder, a crankshaft, a bearing and a piston. The cylinder is used to accommodate the piston and provide a gas compression space; the crankshaft has an eccentric portion, which is arranged in the cylinder and drives the reciprocating motion of the piston through eccentric motion to achieve gas compression. The bearing is arranged on the side of the cylinder along the axial direction of the crankshaft and supports the crankshaft to ensure its stable rotation and reduce friction and wear. At the same time, the bearing is provided with an oil outlet end surface connected to the cylinder and an oil suction channel connected to the oil outlet end surface. The oil suction channel is connected to the oil pool of the compressor, thereby achieving effective supply of lubricating oil. An oil storage space is formed between the bearing and the eccentric portion of the crankshaft. The oil storage space is connected to the low-pressure chamber of the compressor through the oil groove of the bearing and the through hole of the crankshaft. During operation, the piston is connected to the eccentric portion of the crankshaft and rotates eccentrically driven by the rotation of the crankshaft, and intermittently connects the oil storage space with the oil outlet end surface. This structural design allows lubricating oil to be introduced into the cylinder through the oil suction channel and oil storage space. The lubricating oil then lubricates the various friction pairs, such as the bearings, cylinder, intermediate plate, blades, and piston components or surfaces that move relative to each other. This embodiment of the utility model effectively alleviates the problem of insufficient lubrication within the compressor, improves the operational stability and reliability of the system, and extends the service life of the equipment.

[0039] Figure 1 It is a cross-sectional view of a pump body according to an embodiment of the present utility model. Figure 2 for Figure 1 A partial enlarged view of the . Figure 1 and Figure 2As shown, the pump body of the utility model is applied to a compressor (hereinafter, the pump body is applied to a double-cylinder bedroom compressor as an example for explanation, but not limited to this), and the pump body includes: a cylinder, such as Figure 1 The first cylinder 100a is used to accommodate and compress the refrigerant gas. The crankshaft 200 has an eccentric portion, such as Figure 1 The first eccentric portion 210a is arranged in the cylinder to drive the piston to do eccentric motion. Figure 1 The first bearing 410a is also a secondary bearing. The first bearing 410a is arranged on the side of the first cylinder 100a along the axial direction of the crankshaft 200, supports the crankshaft 200, and has an oil outlet end surface connected to the first cylinder 100a, such as Figure 1 The first oil outlet end surface 411a and the oil suction channel 412 connected to the oil outlet end surface are as follows. Figure 1 The first oil suction channel 412a in the first oil outlet end face 411a is provided on the end face close to the cylinder side. The oil suction channel 412 is provided with an oil suction hole 413 connected to the oil pool 510 of the compressor. Figure 1 In different embodiments, the shape of the oil outlet end surface and the design of the oil suction channel 412 can be adjusted according to the actual application. For example, the oil flow characteristics can be optimized by changing the area or shape of the oil outlet end surface, thereby improving the lubrication effect. Figure 1 The first piston 310a is connected to the first eccentric part 210a, and one end of the piston in the axial direction of the crankshaft 200 is in contact with the oil outlet end face. An oil storage space is formed between the first bearing 410a and the first eccentric part 210a. The oil storage space is connected to the low-pressure chamber of the compressor through the oil groove of the first bearing 410a and the through hole of the crankshaft 200. The piston is driven by the crankshaft 200 to rotate eccentrically and intermittently connects the oil storage space with the oil outlet end face. When the pump body is applied to the compressor, the oil in the oil pool 510 at the bottom of the compressor is sucked into the oil storage space through the oil suction channel 412 due to the high and low pressure difference of the compressor. The oil storage space, the oil groove of the first bearing 410a, the through hole of the crankshaft 200 and the gaps between the various components send the oil to the main bearing, auxiliary bearing and various components of the compressor for lubrication, thereby ensuring the reliability of the compressor during operation.

[0040] In some optional embodiments, one end of the oil suction channel 412 is extended to the oil outlet end surface to form an oil outlet hole 414, and the piston is configured to rotate eccentrically in a manner that intermittently opens the oil outlet hole 414, thereby ensuring timely and uniform lubrication of the compressor. Figure 3 This is a first embodiment of the bearing structure diagram of the utility model, such as Figure 3As shown, an oil outlet hole 414 is provided on the oil outlet end surface. The distance between the oil outlet hole 414 and the bearing center point or the bearing edge along the radial direction of the bearing is not specifically limited and can be arranged to achieve intermittent connection to the oil storage space in accordance with the design of the piston. In this embodiment, the provision of oil outlet hole 414 allows the oil storage space to be directly connected to various key friction components via the oil groove of the bearing and the through-hole of the crankshaft 200, thereby optimizing the distribution and flow of lubricating oil. Due to the eccentric rotation of the piston, the oil outlet hole 414 can connect to the oil suction channel 412 at specific time intervals, thereby achieving intermittent oil supply. Furthermore, the oil outlet hole 414 is intermittently connected to the eccentric clearance of the crankshaft 200. When used in a compressor, the high and low pressure differential causes lubricating oil to flow through the oil storage space, the oil groove of the bearing, and the through-hole of the crankshaft 200 into the low-pressure chamber. This design not only prevents excessive lubricating oil supply, which can lead to oil return difficulties, but also allows the oil supply frequency to be adjusted according to the operating state of the compressor to meet different operating requirements. This flexible oil supply method can maintain good lubrication effect under various working conditions, ensuring the stable operation of the compressor.

[0041] In some optional embodiments, the oil suction hole 413 is provided on the peripheral surface of the bearing, further solving the connection problem between the oil pool 510 and the oil suction channel 412. Figure 3 As shown, the oil suction hole 413 is arranged on the circumferential surface of the bearing. In actual use, the lowest point of the oil level in the bottom oil pool 510 is higher than the oil suction hole 413, ensuring that the lubricating oil can enter the oil suction channel 412 more efficiently and then be provided to the lubrication system of the compressor. In the present invention, the oil suction hole 413 is arranged on the circumferential surface of the bearing, which optimizes the layout of the oil suction channel 412 and makes the flow of oil smoother. Through this design, the oil suction hole 413 can continuously absorb lubricating oil during the movement of the bearing, ensuring that the lubricating oil is supplied to key parts as designed. This layout not only improves the efficiency of lubricating oil absorption, but also reduces the risk of oil backflow, thereby reducing the pressure loss to the lubrication system. In addition, the location selection of the oil suction hole 413 also helps to adapt to different types of compressors and their operating conditions, enhancing the adaptability and flexibility of the present invention.

[0042] In some optional embodiments, the bearing has a protrusion 415 , and the oil suction hole 413 is provided on the circumferential surface of the protrusion 415 . Figure 4 This is a second embodiment of the bearing structure diagram of the utility model, such as Figure 4As shown, the bearing has a protrusion 415, and the oil suction hole 413 extends from the bearing surface where the protrusion 415 is located. During actual use, the bearing area where the protrusion 415 is located enters the oil pool 510, further ensuring that the lowest point of the oil level in the bottom oil pool 510 is higher than the oil suction hole 413, thereby adapting to the absorption and supply of lubricating oil in different operating conditions and bearing environments. By providing different types of protrusions 415 on the bearing, the oil accumulation area can be increased, making the arrangement of the oil suction hole 413 more flexible, thereby adapting to diverse working conditions and requirements. In this embodiment, the shape and position of the protrusion 415 can be designed according to different operating conditions and environments, and the height and shape of the protrusion 415 can be appropriately adjusted to increase the flow efficiency and absorption capacity of the lubricating oil.

[0043] In some optional embodiments, there is at least one oil suction channel 412 . Figure 5 This is a third embodiment of the bearing structure diagram of the utility model, such as Figure 5 As shown, the bearing has three oil suction channels 412, and correspondingly, three oil suction holes 413 are opened on the end face of the bearing, all of which are connected to the same oil outlet hole 414, which can effectively alleviate the problem of insufficient lubricating oil supply and ensure the lubrication effect of the compressor during operation. However, the present invention is not limited to this. At least one oil outlet hole 414 can also be set according to design requirements, and this embodiment does not make specific limitations. In this embodiment, at least one oil suction channel 412 is set to ensure that under various working conditions, especially during unstable operation of the vehicle, the compressor can effectively absorb the lubricating oil in the oil pool 510, thereby meeting the lubrication needs of various components. By setting at least one oil suction channel 412, the oil flow supply method can be flexibly adjusted to adapt to different compressor designs and operating conditions.

[0044] In some optional embodiments, the oil suction channel 412 has an inclination angle relative to the bottom of the oil suction channel 412 of between -35° and 35°. Figure 5As shown, the direction directly below is the natural downward direction of the oil pool 510 relative to the bearing when the pump body is installed. The inclination angle of the oil suction channel 412 relative to the bottom is set between -35° and 35°, which can effectively solve the problem of uneven lubricating oil supply in the pump body oil suction channel 412 under different installation positions and working conditions. In the present utility model, the inclination design of the oil suction channel 412 can be adjusted according to the actual bearing characteristics and the angle of the oil suction channel 412 relative to the oil pool 510, thereby ensuring that a good oil flow supply can be maintained under various circumstances. For example, when the compressor is at different inclination angles, the inclination angle of the oil suction channel 412 can optimize the oil flow path, allowing the lubricating oil to be smoothly sucked in, avoiding insufficient oil flow due to gravity or position influences. This design of the present embodiment enhances the adaptability of the pump body, can adapt to various installation environments and working conditions, improves the oil flow efficiency, and reduces the risk of friction and wear caused by poor oil flow. In addition, the flexible setting of the oil suction channel 412 also provides more options for the design of the compressor, so that a stable lubrication effect can be achieved under various conditions, thereby enhancing the overall reliability of the system and extending the service life of the equipment.

[0045] In some optional embodiments, the bearing includes a main bearing and a secondary bearing. Figure 6 This is a cross-sectional view of the first pump body in an embodiment of the present utility model applied to a horizontal compressor. Taking a two-cylinder compressor as an example, the first bearing 410a, i.e., the auxiliary bearing, is provided with an oil suction channel 412, i.e., the first oil suction channel 412a, and correspondingly, a first oil outlet end surface 411a is provided on the end surface of the first bearing 410a on the side of the first cylinder 100a, and a first oil suction hole 413a is provided on the circumferential surface of the first bearing 410a and connected to the oil pool 510. Figure 7 This is a cross-sectional view of the second pump body in the embodiment of the present utility model applied to a horizontal compressor. Taking a two-cylinder compressor as an example, the second bearing 410b, i.e., the main bearing, is provided with an oil suction channel 412, i.e., a second oil suction channel 412b. Correspondingly, a second oil outlet end surface 411b is provided on the end surface of the second bearing 410b on the side of the second cylinder 100b. A second oil suction hole 413b is provided on the circumference of the second bearing 410b and is connected to the oil pool 510. Figure 6 and Figure 7As shown, the main bearing is the second bearing 410b, and the auxiliary bearing is the first bearing 410a. The oil suction channel 412 can be set separately on the main bearing such as the second oil suction channel 412b or the auxiliary bearing such as the first oil suction channel 412a, or both the main bearing and the auxiliary bearing are provided with the oil suction channel 412. This embodiment does not make specific limitations. In this embodiment, the various design options of the oil suction channel 412 on the main bearing and the auxiliary bearing allow the oil suction channel 412 to be flexibly set as needed to adapt to different working conditions. This setting enables the system to achieve efficient lubrication under different working conditions, thereby reducing friction and wear, and improving the reliability and service life of the compressor. In addition, the flexible layout of the oil suction channel 412 also provides more options for the design of the compressor, which can be optimized according to actual needs to achieve the best lubrication effect.

[0046] In some optional embodiments, such as Figure 6 and Figure 7 As shown, the pump body also includes an intermediate plate 110, the cylinder includes a first cylinder 100a and a second cylinder 100b, and the intermediate plate 110 is arranged between the first cylinder 100a and the second cylinder 100b along the axial direction of the crankshaft 200. The piston includes a first piston 310a and a second piston 310b, and the eccentric portion includes a first eccentric portion 210a and a second eccentric portion 210b. The first piston 310a is connected to the first eccentric portion 210a and is arranged in the first cylinder 100a, and the second piston 310b is connected to the second eccentric portion 210b and is arranged in the second cylinder 100b. The application of the pump body in a two-cylinder compressor can solve the problem of fluid dynamic imbalance that exists in traditional pump bodies when handling multi-cylinder systems. When the crankshaft 200 rotates eccentrically, the two pistons can cooperate with each other to form alternating fluid compression and discharge, ensuring uniform distribution of oil in the system and reducing the dependence on lubrication during operation.

[0047] The present invention also provides a horizontal compressor. Figure 6 and Figure 7As shown, it includes a front housing assembly 600, a rear housing assembly 800, a middle partition 700, a motor component 610 and the above-mentioned pump body. The rear housing assembly 800 and the front housing assembly 600 are connected to both sides of the middle partition 700. The rear housing assembly 800 includes a high-pressure chamber, and the front housing assembly 600 includes a low-pressure chamber; the motor component 610 is arranged in the low-pressure chamber, the pump body is arranged in the high-pressure chamber, the crankshaft 200 passes through the high-pressure chamber into the low-pressure chamber and is connected to the motor component 610, and the oil pool 510 is arranged in the high-pressure chamber. An oil storage space is formed between the first bearing 410a and the first eccentric portion 210a, and between the second bearing 410b and the second eccentric portion 210b. The oil storage space is connected to the low-pressure chamber of the compressor through the oil groove of the first bearing 410a, the oil groove of the second bearing 410b and the through hole of the crankshaft 200. The piston is driven by the crankshaft 200 to rotate eccentrically, and intermittently connects the oil storage space and the oil outlet end face. Due to the high and low pressure difference of the compressor, the oil in the oil pool 510 at the bottom of the compressor is sucked into the oil storage space through the first oil suction channel 412a and the second oil suction channel 412b respectively, enters the low-pressure chamber through the gap between the crankshaft 200 and the first piston 310a, and the gap between the crankshaft 200 and the second bearing 410b, enters the low-pressure chamber through the gap between the crankshaft 200 and the first bearing 410a, enters the central axial inner hole of the crankshaft, and then enters the low-pressure chamber, and then flows back to the oil pool through the corresponding oil return flow path to complete the oil supply and oil return cycle to achieve lubrication of the compressor and pump body components.

[0048] An embodiment of the present invention also provides a vehicle, including a horizontal compressor according to any of the above embodiments. The vehicle may also include a refrigeration system, which includes a compressor. The refrigeration system is used to provide cold air or hot air into the vehicle body, thereby ensuring the comfort of the environment inside the vehicle.

[0049] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot 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 pump body, used in a compressor, characterized in that: include: cylinder; a crankshaft having an eccentric portion disposed in the cylinder; A bearing, the bearing being arranged on a side of the cylinder along the axial direction of the crankshaft and supporting the crankshaft, the bearing being provided with an oil outlet end surface communicating with the cylinder and an oil suction channel communicating with the oil outlet end surface, the oil suction channel being provided with an oil suction hole communicating with the oil pool of the compressor; The piston is connected to the eccentric part, and one end of the piston in the axial direction of the crankshaft is in contact with the oil outlet end face. An oil storage space is formed between the bearing and the eccentric part, and the oil storage space is connected to the low-pressure chamber of the compressor. The piston is driven by the crankshaft to rotate eccentrically and intermittently connects the oil storage space and the oil outlet end face.

2. The pump body according to claim 1, characterized in that The bearing includes a main bearing and a secondary bearing, and the oil suction channel is separately provided on the main bearing or the secondary bearing, or both the main bearing and the secondary bearing are provided with oil suction channels.

3. The pump body according to claim 1, characterized in that The inclination angle of the oil suction channel relative to the bottom is between -35° and 35°.

4. The pump body according to claim 1, characterized in that There is at least one oil suction channel.

5. The pump body according to claim 1, characterized in that: One end of the oil suction channel is penetrated to the oil outlet end surface to form an oil outlet hole, and the piston is configured to rotate eccentrically in a manner of intermittently opening the oil outlet hole.

6. The pump body according to claim 1, characterized in that The oil suction hole is arranged on the peripheral surface of the bearing.

7. The pump body according to claim 6, characterized in that The bearing has a convex block, and the oil suction hole is arranged on the peripheral surface of the convex block.

8. The pump body according to claim 1, characterized in that The pump body also includes an intermediate plate, the cylinder includes a first cylinder and a second cylinder, the intermediate plate is arranged between the first cylinder and the second cylinder along the axial direction of the crankshaft, the piston includes a first piston and a second piston, the eccentric part includes a first eccentric part and a second eccentric part, the first piston is connected to the first eccentric part and is arranged in the first cylinder, and the second piston is connected to the second eccentric part and is arranged in the second cylinder.

9. A horizontal compressor, characterized in that: It includes a front housing assembly, a rear housing assembly, a middle partition, a motor component and a pump body according to any one of claims 1 to 8, the rear housing assembly and the front housing assembly are connected to both sides of the middle partition, the rear housing assembly includes a high-pressure chamber, and the front housing assembly includes the low-pressure chamber; the motor component is arranged in the low-pressure chamber, the pump body is arranged in the high-pressure chamber, the crankshaft passes through the high-pressure chamber into the low-pressure chamber and is connected to the motor component, and the oil pool is arranged in the high-pressure chamber.

10. A vehicle, characterized in that: Including the horizontal compressor described in claim 9.

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