Single-motor double-pump-head structure integrating refrigerant pump and oil pump

Abstract

The utility model relates to the technical field of compressors, in particular to a single-motor double-pump-head refrigerant pump and oil pump integrated structure which comprises a refrigerant pump, a motor and an oil pump which are sequentially arranged in the first direction. The motor comprises a wiring terminal, a motor stator and a motor rotor which are connected in a matched mode, the wiring terminal is used for being connected with an external power source, and the motor rotor comprises a rotating shaft; the refrigerant pump comprises a refrigerant pump rotor pair, the oil pump comprises an oil pump rotor pair, and the two ends of the rotating shaft are arranged on the inner side of the refrigerant pump and the inner side of the oil pump respectively and connected to the refrigerant pump rotor pair and the oil pump rotor pair respectively. According to the invention, the number of parts is reduced to reduce the material cost and shorten the assembly working hours, the unit space is saved, the unit layout is more compact, the arrangement of electrical parts of the control cabinet and the starting cabinet is simplified, the number of outgoing cables is reduced to reduce the failure rate of the unit, and vibration sources and noise sources on the unit are reduced. And the operation quality of the unit is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to a structure with a single motor and dual pump head that serves as both a refrigerant pump and an oil pump. Background Technology

[0002] In a compressor unit, the refrigeration oil pump and the refrigerant pump each perform different functions, working together to ensure the efficient and stable operation of the compressor unit. Currently, the refrigeration oil pump and the refrigerant pump are independent within the compressor unit, and their different locations within the unit have the following effects:

[0003] 1. The refrigeration oil pump and refrigerant pump each use motors and other components, requiring more parts, which increases material costs and assembly time;

[0004] 2. The oil pump and refrigerant pump of the refrigeration unit are independent, which occupies a lot of space in the compressor unit, affecting the overall layout of the compressor unit and resulting in a larger overall size of the compressor unit;

[0005] 3. Both the refrigeration oil pump and the refrigerant pump require independent control circuits and starting devices, which increases the size of the control cabinet and starting cabinet and makes the wiring more complex. This not only increases the difficulty of installation and maintenance, but may also increase the number of failure points, thus making it difficult to reduce the overall failure rate of the compressor unit. The refrigeration oil pump and the refrigerant pump also need to be connected by multiple cables, which not only increases the amount of cables used, but may also increase the probability of failure due to cable joint and wiring problems.

[0006] 4. Both the oil pump and the refrigerant pump in the compressor will generate a certain amount of vibration and noise during operation. When the two pumps are located in different positions on the compressor unit, the number of vibration and noise sources on the compressor unit increases, affecting the operating quality of the compressor unit.

[0007] Therefore, how to solve the shortcomings of the existing technology caused by the independent operation of the refrigeration oil pump and the refrigerant pump in the compressor unit has become the subject of this utility model. Utility Model Content

[0008] The purpose of this invention is to provide a structure that combines a single motor and a dual pump head, serving as both a refrigerant pump and an oil pump.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A single-motor dual-pump head structure that integrates a refrigerant pump and an oil pump, designed for the oil sump of a compressor, includes a refrigerant pump, a motor, and an oil pump arranged sequentially along a first direction. The motor includes a terminal block, a stator, and a rotor that are connected in conjunction. The terminal block is used to connect to an external power source, and the rotor includes a shaft. The refrigerant pump is located outside the oil sump and includes a refrigerant pump rotor pair. The oil pump is located inside the oil sump and includes an oil pump rotor pair. The two ends of the shaft are respectively located inside the refrigerant pump and the oil pump and are respectively connected to the refrigerant pump rotor pair and the oil pump rotor pair.

[0011] In the above scheme, a single motor can synchronously drive the refrigerant pump and the oil pump. On the one hand, this simplifies the number of components, such as eliminating a motor, thereby reducing material costs and assembly time, and also reducing the difficulty of installation and disassembly. On the other hand, taking the compressor unit as an example, the refrigerant pump and the oil pump are set up close to each other, which can save unit space, make the unit layout more compact, facilitate the overall layout of the unit, and reduce the space occupied by the unit. Furthermore, it promotes the simplification of the electrical component layout of the control cabinet and starter cabinet and reduces the number of outgoing cables, thereby reducing the unit failure rate. Moreover, since the refrigerant pump and the oil pump are set up in a centralized manner, the vibration and noise sources on the unit are reduced, improving the operating quality of the unit.

[0012] A further technical solution is to provide bushings on both outer sides of the rotating shaft to reduce the wear rate of the rotating shaft.

[0013] A further technical solution also includes a protective cover, which encloses the wiring terminal. The protective cover can wrap around the wiring terminal to form a relatively closed space, thereby isolating dust, moisture, oil and other impurities from the external environment and preventing them from entering the wiring terminal and causing short circuits, corrosion and other malfunctions.

[0014] In a further technical solution, the refrigerant pump also includes an inlet sealing plate, a front cover, an adapter, and a refrigerant pump cover connected sequentially along a first direction. The refrigerant pump cover has a through hole for the rotating shaft to pass through. The refrigerant pump rotor is disposed inside the adapter. The front cover has a refrigerant inlet hole. The inlet sealing plate is used to block the opening of the refrigerant inlet hole away from the adapter.

[0015] In a further technical solution, the refrigerant pump also includes a connecting shaft disposed inside the adapter seat. The rotating shaft drives the refrigerant pump rotor pair to rotate via the connecting shaft. The connecting shaft serves as an intermediate structure, enabling the rotating shaft to drive the refrigerant pump rotor pair to rotate. The rotating shaft, connecting shaft, and refrigerant pump rotor pair are sequentially fitted together to rotate coaxially and synchronously.

[0016] A further technical solution involves providing a shaft seal between the connecting shaft and the refrigerant pump cover. The shaft seal isolates the refrigerant side from the oil side, preventing leakage from both.

[0017] A further technical solution also includes an oil delivery assembly installed on the oil pump, the oil delivery assembly including a connected oil pipe and a connecting seat, the oil pipe being installed on the oil pump, and the oil pump transferring engine oil through the oil pipe.

[0018] In a further technical solution, the oil delivery assembly also includes a first connector and a second connector, wherein the oil pipe is installed on the oil pump through the first connector and connected to the connector seat through the second connector.

[0019] Compared to connecting the oil pipe directly to the oil pump, connecting the oil pipe to the oil pump through the first connector is more effective. The first connector serves to connect, buffer, seal, and isolate, ensuring that the engine oil will not leak or become contaminated under high pressure.

[0020] In a further technical solution, the oil delivery assembly also includes an oil pressure regulating valve, which is installed at the end of the connector near the oil pipe.

[0021] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0022] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0023] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0024] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0025] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0026] The working principle and advantages of this utility model are as follows: An external power supply supplies current to the motor stator through the wiring terminals. The motor stator generates a magnetic field and acts on the motor rotor to realize the rotation of the shaft. The shaft drives the refrigerant pump rotor pair and the oil pump rotor pair to rotate synchronously, realizing that a single motor synchronously drives the refrigerant pump and the oil pump. In turn, the motor drives the oil pump rotor pair to pump out the refrigeration oil in the oil tank, and the motor drives the refrigerant pump rotor pair to pump out the refrigerant stored in the liquid storage tank or other storage equipment. With the above configuration, a single motor can synchronously drive the refrigerant pump and the oil pump. On the one hand, this simplifies the number of components, such as eliminating a motor, thereby reducing material costs and assembly time, and also reducing the difficulty of installation and disassembly. On the other hand, taking the compressor unit as an example, the close proximity of the refrigerant pump and the oil pump saves unit space, making the unit layout more compact and facilitating overall unit layout, while also reducing the space occupied by the unit. Furthermore, it facilitates the simplification of the electrical component layout of the control cabinet and starter cabinet and reduces the number of outgoing cables, thereby reducing the unit's failure rate. Moreover, the centralized configuration of the refrigerant pump and the oil pump reduces vibration and noise sources on the unit, improving the unit's operating quality. Attached Figure Description

[0027] Figure 1 This is a cross-sectional structural diagram of one scenario where this application is used in conjunction with an oil tank;

[0028] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0029] In the attached diagrams: 1. Refrigerant pump; 11. Refrigerant pump rotor pair; 12. Inlet sealing plate; 13. Front cover; 131. O-ring groove; 14. Adapter seat; 15. Refrigerant pump cover; 16. Connecting shaft; 2. Motor; 21. Terminal block; 22. Motor stator; 23. Motor rotor; 231. Rotating shaft; 3. Oil pump; 31. Oil pump rotor pair; 4. Bushing; 5. Protective cover; 6. Shaft seal; 7. Oil delivery assembly; 71. Oil pipe; 72. Connecting seat; 73. First connector; 74. Second connector; 75. Oil pressure regulating valve; 76. Oil pump adapter plate; 8. Oil tank; 81. Oil tank end plate; 82. Flange. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0032] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0033] See Figures 1-2 A single-motor dual-pump-head structure that serves as both a refrigerant pump and an oil pump is disclosed. This structure is designed for the oil sump of a compressor. The structure includes a refrigerant pump 1, a motor 2, and an oil pump 3 arranged sequentially along a first direction. The motor 2 includes a terminal block 21, a stator 22, and a rotor 23 that are connected in a mating manner. The terminal block 21 is used for connection to an external power source. The rotor 23 includes a shaft 231. The refrigerant pump 1 includes a refrigerant pump rotor pair 11, and the oil pump 3 includes an oil pump rotor pair 31. The two ends of the shaft 231 are respectively located inside the refrigerant pump 1 and the oil pump 3 and are respectively connected to the refrigerant pump rotor pair 11 and the oil pump rotor pair 31.

[0034] The first direction is parallel to the X direction in the diagram.

[0035] The refrigerant pump 1, motor 2, and oil pump 3 are arranged sequentially along the first direction in the compressor unit or other devices, with motor 2 positioned between refrigerant pump 1 and oil pump 3. Their operation is as follows: An external power supply provides current to the motor stator 22 through terminal 21. The motor stator 22 generates a magnetic field that acts on the motor rotor 23, causing the shaft 231 to rotate. The shaft 231 drives the refrigerant pump rotor pair 11 and the oil pump rotor pair 31 to rotate synchronously, enabling a single motor 2 to synchronously drive both the refrigerant pump 1 and the oil pump 3. This results in motor 2 driving the oil pump rotor pair 31 to pump the refrigerant oil from the oil tank 8, and motor 2 driving the refrigerant pump rotor pair 11 to pump the refrigerant from the liquid storage tank or other storage devices. The process of the oil pump rotor pair 31 pumping the refrigerant oil from the oil tank 8 is existing technology; the operation of existing oil pump 3 structures can be referenced, and will not be described in detail here.

[0036] With the above configuration, a single motor 2 can synchronously drive the refrigerant pump 1 and the oil pump 3, with the following effects: Firstly, it simplifies the number of components, such as eliminating one motor 2, thereby reducing material costs and assembly time, and also reducing the difficulty of installation and disassembly; secondly, taking the compressor unit as an example, the close proximity of the refrigerant pump 1 and the oil pump 3 saves unit space, making the unit layout more compact, facilitating the overall layout of the unit, and reducing the space occupied by the unit; thirdly, it promotes the simplification of the electrical component layout of the control cabinet and starter cabinet and reduces the number of outgoing cables, thereby reducing the unit failure rate; and fourthly, the centralized configuration of the refrigerant pump 1 and the oil pump 3 reduces vibration and noise sources on the unit, improving the unit's operating quality.

[0037] It should be emphasized that this application can be used in compressor units as well as other units, and there are no specific limitations. For ease of description and understanding, the embodiments can be regarded as this application being used in compressor units, but in actual use it is not limited to this.

[0038] It should also be emphasized that, compared with the traditional method of refrigeration oil pump 3 and refrigerant pump 1 being arranged independently, in this application, refrigeration oil pump 3 and refrigerant pump 1 can be regarded as an integral structure. This integral structure contains only one motor 2, thus eliminating one motor 2. Specifically, the shaft 231 of the motor rotor 23 of the single motor 2 is connected to both the refrigerant pump rotor pair 11 and the oil pump rotor pair 31.

[0039] Regarding the three components—refrigeration oil pump 3, refrigerant pump 1, and motor 2—taking the adjacent refrigeration oil pump 3 and motor 2 as an example, they can be installed close together or with a gap. They can be connected or separated, depending on the requirements of the installation and assembly of the compressor unit and other devices.

[0040] In this embodiment, bushings 4 are fitted on both outer sides of the rotating shaft 231 to reduce the wear rate of the rotating shaft 231.

[0041] The bushing 4 serves to reduce wear, lower friction, and provide lubrication. Installing the bushing 4 on the outer sides of both ends of the rotating shaft 231 can reduce the wear rate of the shaft 231. The bushing 4 can be a DDK bushing 4. For the bushing 4, factors such as its size, shape, and installation method need to be considered to ensure that the bushing 4 can fit tightly with the rotating shaft 231 and achieve a stable driving effect.

[0042] In this embodiment, a protective cover 5 is also included, which covers the wiring terminal 21.

[0043] The protective cover 5 can be installed on the motor stator 22 and other structures. Taking this as an example, if it is not emphasized that it is an integrated installation, the protective cover 5 can be fixedly connected or detachably connected to the motor stator 22 and other structures according to the actual situation. The protective cover 5 can also be rotatably connected or slidably connected to the motor stator 22 and other structures according to the actual situation.

[0044] After the terminal block 21 is connected to an external power source (such as a wire), the protective cover 5 covers the terminal block 21. On one hand, the protective cover 5 encloses the terminal block 21 to form a relatively enclosed space, thereby isolating it from dust, moisture, oil, and other impurities in the external environment, preventing them from entering the terminal block 21 and causing short circuits, corrosion, or other malfunctions. On the other hand, the protective cover 5 is usually made of a sturdy material, such as metal or plastic, which can withstand the effects of mechanical shocks and vibrations, protecting the terminal block 21 from damage. Furthermore, by encapsulating the terminal block 21 within the protective cover 5, the risk of electric shock and short circuits can be reduced, improving the overall safety of the electrical equipment. The protective cover 5 can be fixed in a predetermined position using screws or other fasteners.

[0045] In this embodiment, the refrigerant pump 1 further includes an inlet sealing plate 12, a front cover 13, an adapter 14, and a refrigerant pump cover 15 connected sequentially along a first direction. The refrigerant pump cover 15 has a through hole for the rotating shaft 231 to pass through. The refrigerant pump rotor pair 11 is disposed inside the adapter 14. The front cover 13 has a refrigerant inlet hole (not shown in the figure). The inlet sealing plate 12 is used to block the opening of the refrigerant inlet hole away from the adapter 14.

[0046] Optionally, the front cover 13 is provided with an O-ring groove 131, and an O-ring seal (not shown in the figure) is provided in the O-ring groove 131. The O-ring seal is used to prevent gas or liquid from leaking out from the mating surface of the inlet sealing plate 12 and the front cover 13.

[0047] In some existing technologies, the front cover 13 is provided with a refrigerant inlet and a refrigerant outlet. The refrigerant inlet is connected to the refrigerant storage structure, and the inlet sealing plate 12 can be used to prevent refrigerant from leaking out during the process of entering the refrigerant inlet from the refrigerant storage structure.

[0048] Of the two bushings 4, the bushing 4 closer to the refrigerant pump 1 can be installed in the perforation on the refrigerant pump cover 15.

[0049] The operation of refrigerant pump 1 can be referred to existing technology, and will not be described in detail here.

[0050] For refrigerant pump 1, the refrigerant pump cover 15 serves to seal and fix, protecting the internal components of refrigerant pump 1 from the influence of the external environment; the adapter 14, as a key component connecting the inside and outside of refrigerant pump 1, is responsible for transferring refrigerant and supporting the internal components; the front cover 13 is used to protect the internal components of refrigerant pump 1; and the inlet sealing plate 12 is used to seal the opening on one side of the refrigerant inlet to prevent refrigerant leakage and ensure that refrigerant can smoothly enter the interior of refrigerant pump 1.

[0051] In this embodiment, the refrigerant pump 1 further includes a connecting shaft 16 disposed inside the adapter 14, and the rotating shaft 231 drives the refrigerant pump rotor 11 to rotate through the connecting shaft 16.

[0052] In some cases, due to assembly process considerations, the space inside the adapter 14 is large and the refrigerant pump rotor pair 11 cannot directly contact the rotating shaft 231 inside the adapter 14. In this case, the connecting shaft 16 serves as an intermediate structure so that the rotating shaft 231 can drive the refrigerant pump rotor pair 11 to rotate. The rotating shaft 231, the connecting shaft 16, and the refrigerant pump rotor pair 11 are sequentially fitted together to rotate coaxially and synchronously.

[0053] In this embodiment, a shaft seal 6 is provided between the connecting shaft 16 and the refrigerant pump cover 15.

[0054] In some cases during use, there is a gap between the connecting shaft 16 and the refrigerant pump cover 15. Refrigerant can enter this gap through the outlet on the refrigerant pump 1, and oil in the oil sump 8 may enter this gap, such as through the perforation on the refrigerant pump cover 15. The shaft seal 6 can prevent this phenomenon from occurring. The shaft seal 6 isolates the refrigerant side and the oil side, preventing leakage of both.

[0055] Both refrigerant pump 1 and oil pump 3 have outlet and inlet ports, which is a standard configuration and can be referenced from existing designs.

[0056] In this embodiment, an oil delivery assembly 7 is also included, which is installed on the oil pump 3. The oil delivery assembly 7 includes an oil pipe 71 and a connecting seat 72 connected to each other. The oil pipe 71 is installed on the oil pump 3, and the oil pump 3 transfers engine oil through the oil pipe 71.

[0057] Motor 2 drives oil pump rotor 31 to pump refrigeration oil from oil tank 8 to oil pipe 71 in oil delivery assembly 7. The refrigeration oil flows along the extension direction of oil pipe 71 and finally flows out from oil pump 3 adapter 14. After that, the refrigeration oil can be delivered to various moving parts of the compressor, such as pistons and bearings, to reduce friction and wear and extend equipment life. Connector 72 is the part in oil delivery assembly 7 that connects to other parts (such as parts in the compressor) to ensure that oil pipe 71 can be stably installed in the predetermined position.

[0058] Optionally, the oil pump 3 includes an oil pump adapter plate 76, an oil pipe 71 mounted on the oil pump adapter plate 76, and an outlet on the oil pump 3 located on the oil pump adapter plate 76. The oil pump adapter plate 76 connects the oil pump 3 to the oil delivery assembly 7, allowing the oil to flow smoothly and in a sealed manner between the oil pump 3 and other system components. In this case, the refrigerant oil flows through the oil pump adapter plate 76 and the oil pipe 71, and finally flows out from the oil pump 3 adapter seat 14. The oil pump adapter plate 76 is typically connected to the oil pump 3 housing by bolts, nuts, or other fasteners. One end of the oil pipe 71 may be located inside the connecting seat 72.

[0059] In this embodiment, the oil delivery assembly 7 further includes a first connector 73 and a second connector 74. The oil pipe 71 is installed on the oil pump 3 through the first connector 73 and connected to the connector 72 through the second connector 74.

[0060] Taking the first connector 73 as an example, the second connector 74 is explained in the same manner, as follows: Compared to the method of directly connecting the oil pipe 71 to the oil pump 3, the method of connecting the oil pipe 71 to the oil pump 3 through the first connector 73 is more effective. The first connector 73 serves to connect, buffer, seal, and isolate, ensuring that the engine oil will not leak or be contaminated under high pressure. The first connector 73 can be set as a right-angle connector. The oil pipe 71 can be composed of multiple sub-pipes, and connectors can be used to connect two sub-pipes.

[0061] In this embodiment, the oil delivery assembly 7 further includes an oil pressure regulating valve 75, which is installed on the end of the connector 72 near the oil pipe 71.

[0062] The oil pressure regulating valve 75 controls the bypass flow, allowing excess oil to flow back to the oil sump 8. The specific principle is as follows: When the oil pressure is higher than the standard value, the high-pressure oil pushes the diaphragm upward and opens the ball valve, allowing excess oil to flow back to the oil sump 8 through the return pipe 71. When the oil pressure is lower than the standard value, the spring causes the diaphragm to press down and close the ball valve, thus stopping the oil return. Therefore, the oil pressure regulating valve 75 ensures that the pressure within the oil pump 3 system remains within an appropriate range, preventing damage to the system from excessively high or low pressure. The use of the oil pressure regulating valve 75 is existing technology; please refer to existing technologies for its application. Oil return is usually achieved through a separate return system, which typically includes a series of pipes and valves, which will not be described in detail here.

[0063] In use, this application may refer to the following configurations: The motor 2 and oil pump 3 are located inside the oil tank 8, which includes the tank body and end plate 81 connected by a flange 82; the entire structure of the oil pump 3 and part of the oil delivery assembly 7 are located inside the oil tank 8, for example, one end of the oil pressure regulating valve 75, connecting seat 72, and oil pipe 71 is located outside the oil tank 8; part of the motor 2 is located outside the oil tank 8, for example, one end of the shaft 231 is located outside the oil tank 8, and the end plate 81 of the oil tank has an inlet / outlet channel for the motor 2; the refrigerant pump 1 is located outside the oil tank 8 and close to the inlet / outlet channel on the end plate 81; the protective cover 5 and the terminal block 21 are located outside the oil tank 8. The above configuration is only one possible arrangement in actual use and should not be considered the only possible arrangement.

[0064] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A structure with a single motor and dual pump head that functions as both a refrigerant pump and an oil pump, with an oil tank configuration for the compressor, characterized in that: It includes a refrigerant pump (1), a motor (2) and an oil pump (3) arranged sequentially along the first direction. The refrigerant pump (1) is located outside the oil tank (8) and includes a refrigerant pump rotor pair (11). The oil pump (3) is located inside the oil tank (8) and includes an oil pump rotor pair (31); The motor (2) includes a terminal block (21), a stator (22), and a rotor (23) that are connected in a mating manner. The terminal block (21) is used to connect to an external power source; The motor rotor (23) includes a shaft (231); the two ends of the shaft (231) are respectively placed inside the refrigerant pump (1) and inside the oil pump (3) and are respectively connected to the refrigerant pump rotor pair (11) and the oil pump rotor pair (31). The motor (2) can drive the refrigerant pump rotor pair (11) and the oil pump rotor pair (31) to rotate synchronously through the rotating shaft (231), so that the motor (2) can synchronously drive the refrigerant pump (1) and the oil pump (3).

2. The structure of a single-motor dual-pump head system that serves as both a refrigerant pump and an oil pump according to claim 1, characterized in that: Both ends of the shaft (231) are fitted with bushings (4) to reduce the wear rate of the shaft (231).

3. The structure of a single-motor dual-pump head system that serves as both a refrigerant pump and an oil pump according to claim 1, characterized in that: It also includes a protective cover (5) that covers the wiring terminal (21).

4. The structure of a single-motor dual-pump head system that serves as both a refrigerant pump and an oil pump according to claim 1, characterized in that: The refrigerant pump (1) also includes an inlet sealing plate (12), a front cover (13), an adapter (14), and a refrigerant pump cover (15) connected sequentially in the first direction. The refrigerant pump cover (15) is provided with a through hole for the rotating shaft (231) to pass through; The refrigerant pump rotor pair (11) is located inside the adapter (14); The front cover (13) is provided with a refrigerant inlet; The inlet sealing plate (12) is used to block the opening of the refrigerant inlet that is far from the adapter (14).

5. The structure of a single-motor dual-pump head system combining refrigerant pump and oil pump according to claim 4, characterized in that: The refrigerant pump (1) also includes a connecting shaft (16) disposed inside the adapter (14), and the rotating shaft (231) drives the refrigerant pump rotor pair (11) to rotate through the connecting shaft (16).

6. The structure of a single-motor dual-pump head system combining refrigerant pump and oil pump according to claim 5, characterized in that: A shaft seal (6) is provided between the connecting shaft (16) and the refrigerant pump cover (15).

7. The structure of a single-motor dual-pump head system that serves as both a refrigerant pump and an oil pump according to claim 1, characterized in that: It also includes an oil delivery assembly (7) installed on the oil pump (3), the oil delivery assembly (7) including an oil pipe (71) and a connecting seat (72) connected to each other, the oil pipe (71) being installed on the oil pump (3); the oil pump (3) transfers engine oil through the oil pipe (71).

8. The structure of a single-motor dual-pump head system combining refrigerant pump and oil pump according to claim 7, characterized in that: The oil delivery assembly (7) further includes a first connector (73) and a second connector (74), wherein the oil pipe (71) is installed on the oil pump (3) through the first connector (73) and on the connector (72) through the second connector (74).

9. A structure for a single-motor dual-pump head system that serves as both a refrigerant pump and an oil pump, as described in claim 7 or 8, characterized in that: The oil delivery assembly (7) also includes an oil pressure regulating valve (75), which is installed at the end of the connector (72) near the oil pipe (71).

Images