Vehicle air conditioner compressor, vehicle air conditioner and vehicle

Abstract

The utility model discloses a vehicle air conditioner compressor which comprises a compressor main shaft and a belt pulley sleeved on the compressor main shaft, the multiple belt wheels are arranged, and the wheel diameters of the multiple belt wheels are different. Each belt pulley is provided with an electromagnetic coil, and a plurality of suction cups matched with the electromagnetic coils are fixedly installed on the compressor main shaft. Due to the adoption of the technical scheme, compared with the prior art, the air conditioner compressor is always kept to work in a proper rotating speed interval, the refrigeration effect of an air conditioning system of a vehicle in different running states is improved, and the energy consumption of the whole vehicle is reduced.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to an automotive air conditioning compressor, an automotive air conditioner, and a vehicle. Background Technology

[0002] Traditional automotive air conditioning systems are typically powered by the vehicle's engine. When the engine runs, its pulley rotates, driving the air conditioning compressor's pulley via a belt. The compressor then powers the refrigerant in the air conditioning system, completing the cooling cycle. The cooling performance of the air conditioning system is highly dependent on the compressor's operating state. Air conditioning compressors generally have an optimal speed range within which the system achieves optimal cooling. When the compressor speed is below this range, its cooling capacity decreases, resulting in suboptimal cooling speed and effect. Conversely, when the compressor speed is above this range, its cooling capacity exceeds the system's cooling requirements, leading to energy waste. Furthermore, when the compressor operates at high speeds, the system pressure in the high-pressure lines becomes extremely high, especially in high-temperature environments. This can cause frequent compressor start-stop cycles, increasing the compressor's failure rate and further compromising cooling performance.

[0003] Currently, in engine-driven air conditioning systems, the speed ratio between the compressor and the engine is fixed. That is, the compressor speed changes with the engine speed. When the engine is running at low speed, the compressor works at low speed, and when the engine is running at high speed, the compressor works at high speed. This can cause the compressor to sometimes operate outside its suitable speed range. Summary of the Invention

[0004] This utility model provides an automotive air conditioning compressor, an automotive air conditioner, and a vehicle to solve the technical problem in the prior art where the system cannot always maintain operation within a suitable speed range, resulting in poor cooling effect or energy waste in the air conditioning system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] On one hand, an automotive air conditioning compressor is provided, including a compressor main shaft and pulleys mounted on the compressor main shaft; multiple pulleys are provided, and the pulley diameters of the multiple pulleys are different; each pulley is provided with an electromagnetic coil, and multiple suction cups that cooperate with each electromagnetic coil are fixedly installed on the compressor main shaft.

[0007] In some embodiments, all the electromagnetic coils are electrically connected to a control unit, which controls the switching on and off of each electromagnetic coil.

[0008] In some embodiments, the suction cup includes a connecting disc, a metal spring, and a wear-resistant plate connected in sequence from the inside to the outside along the radial direction of the suction cup; the connecting disc is fixedly mounted on the compressor main shaft, and the metal spring has an elastic tendency to move the wear-resistant plate away from the pulley.

[0009] In some embodiments, the pulleys are provided in three.

[0010] In some embodiments, the system further includes a compressor housing, a pulley support, and bearings; one of the pulleys is mounted on the compressor housing via a bearing, and the other pulleys are mounted on the pulley support via bearings.

[0011] In some embodiments, the pulley support includes a housing and a support; the support has a cross-section that is parallel to the compressor main shaft; the housing has an L-shaped cross-section, with one end connected to the compressor housing and the other end connected to the middle of the support, dividing the support into a left half and a right half; the two pulleys are located in the left half and the right half, respectively.

[0012] On another front, an automotive air conditioner is provided, including the aforementioned air conditioning compressor, an engine pulley, a tensioning pulley assembly, and multiple compressor belts; the tensioning pulley assembly includes multiple pulleys of different diameters; one end of all the compressor belts is mounted on the engine pulley, and the other end of each compressor belt is connected to one of the pulleys and one pulley respectively.

[0013] On the other hand, a vehicle is provided that is equipped with the aforementioned vehicle air conditioning.

[0014] This utility model has at least the following technical effects or advantages: it keeps the air conditioning compressor working within a suitable speed range, which not only improves the cooling effect of the air conditioning system under different operating conditions, but also reduces the overall energy consumption of the vehicle. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of a vehicle air conditioning compressor in one embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram showing the state of the first suction cup when it is engaged in one embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram showing the state of the first suction cup when it is separated in one embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of a vehicle air conditioning compressor in one embodiment of the present invention;

[0019] Figure 5This is an exploded schematic diagram of a vehicle air conditioning compressor according to one embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the suction cup structure in one embodiment of the present invention;

[0021] Figure 7 This is a graph showing the power consumption, cooling capacity, and coefficient of performance of an automotive air conditioning compressor as a function of compressor speed in one embodiment of this utility model.

[0022] Figure 8 This is a schematic diagram of the engine-compressor transmission part of an automotive air conditioner in one embodiment of the present invention. Detailed Implementation

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] Example 1

[0025] See Figures 1-6 A vehicle air conditioning compressor includes a compressor main shaft 1 and pulleys mounted on the compressor main shaft 1. In this embodiment, there are three pulleys: a first pulley 2, a second pulley 3, and a third pulley 4, with the diameters of these three pulleys increasing sequentially. A first electromagnetic coil 201 is mounted on the first pulley 2, a second electromagnetic coil 301 is mounted on the second pulley 3, and a third electromagnetic coil 401 is mounted on the third pulley 4. A first suction cup 202, a second suction cup 302, and a third suction cup 402 are fixedly mounted on the compressor main shaft 1, respectively cooperating with the first electromagnetic coil 201, the second electromagnetic coil 301, and the third electromagnetic coil 401. The first electromagnetic coil 201, the second electromagnetic coil 301, and the third electromagnetic coil 401 are all electrically connected to a control unit, which controls the on / off state of each electromagnetic coil.

[0026] like Figures 1-5 As shown, preferably, the automotive air conditioning compressor further includes a compressor housing 6, a pulley support 7, and a bearing 5. In this embodiment, the third pulley 4 is mounted on the compressor housing 6 via the bearing 5, and the first pulley 2 and the second pulley 3 are mounted on the pulley support 7 via the bearing 5. The pulley support 7 includes an outer shell and a support portion. The support portion has a cross-section that is parallel to the compressor housing 1 in a straight line shape, while the outer shell has a cross-section that is L-shaped. One end of the support portion is connected to the compressor housing 6, and the other end is connected to the middle of the support portion, dividing the support portion into a left half and a right half. The first pulley 2 and the second pulley 3 are located in the left half and the right half, respectively.

[0027] like Figure 6As shown, the suction cup includes a connecting plate 2023, a metal spring 2022, and a wear-resistant piece 2021, which are connected radially from the inside to the outside by screws 2024. The connecting plate 2023 is fixedly mounted on the compressor main shaft 1. The metal spring 2022 has an elastic tendency to move the wear-resistant piece 2021 away from the pulley. After being subjected to electromagnetic force, the wear-resistant piece 2021 can be attracted to the side of the pulley. After the wear-resistant piece 2021 loses its electromagnetic force, the metal spring 2022 separates the wear-resistant piece 2021 from the pulley.

[0028] During operation, if the compressor in the air conditioning system needs to operate within its suitable speed range in line with the engine speed, the second electromagnetic coil 301 is energized while the other electromagnetic coils are de-energized. The second suction cup 302 will be attracted by the electromagnetic force and closely adhere to the second pulley 3. The second suction cup 302 will then rotate at the same speed as the second pulley 3, thereby driving the compressor main shaft 1 to rotate at the same speed, and the compressor will start working. When the air conditioning cooling capacity is sufficient or when it is necessary to switch pulleys, the control unit controls the second electromagnetic coil 301 to be de-energized. The electromagnetic force disappears, and the second suction cup 302 will separate from the second pulley 3 under the elastic force of its own metal spring. The second pulley 3 will then spin freely, the compressor main shaft 1 will stop rotating, and the compressor will stop working.

[0029] When the vehicle's engine is running at low speed, the compressor typically operates within a range below its optimal speed range, following the engine's rotational speed. To increase the compressor's speed, a smaller diameter pulley can be used. The control unit energizes the first electromagnetic coil 201 while de-energizing the other electromagnetic coils. The first suction cup 202, attracted by electromagnetic force, adheres tightly to the first pulley 2, causing it to rotate at the same speed as the pulley 2. This, in turn, drives the compressor's main shaft 1 to rotate at the same speed, and the compressor begins to operate. When the air conditioning cooling capacity is sufficient or when a pulley switch is needed, the first electromagnetic coil 201 is de-energized, the electromagnetic force disappears, and the first suction cup 202 separates from the first pulley 2 under the elastic force of its own metal spring. The first pulley 2 then idles, the compressor's main shaft 1 stops rotating, and the compressor stops working.

[0030] Similarly, when the vehicle's engine is running at high speed, the compressor will operate in a range higher than its optimal speed range, following the engine speed. To reduce the compressor speed, a large-diameter pulley can be used. That is, the control unit controls the third electromagnetic coil 401 to be energized while the other electromagnetic coils are de-energized. The third suction cup 402 will be attracted by the electromagnetic force and tightly adhere to the third pulley 4. The third suction cup 402 will then rotate at the same speed as the third pulley 4, thereby driving the compressor main shaft 1 to rotate at the same speed, and the compressor will work. When the air conditioning cooling capacity is sufficient or when it is necessary to switch pulleys, the third electromagnetic coil 401 is de-energized, the electromagnetic force disappears, and the third suction cup 402 will separate from the third pulley 4 under the elastic force of its own metal spring. The third pulley 4 will spin freely, the compressor main shaft 1 will stop rotating, and the compressor will stop working.

[0031] In theory, if a more precise adjustment of the pulley speed ratio is required, more compressor pulleys of different diameters and their matching electromagnetic coils and chucks can be added.

[0032] Figure 7 This is a graph showing the compressor's power consumption, cooling capacity, and coefficient of performance (COP) as a function of compressor speed. It shows that when the air conditioner compressor operates at low speeds, its cooling capacity and power consumption are also low. As the compressor speed increases, the cooling capacity gradually increases, but the power consumption also increases. Simultaneously, the COP decreases, meaning the compressor's energy conversion rate decreases. Therefore, considering both cooling capacity and power consumption, there exists a suitable operating speed range for the compressor. Within this range, the air conditioner's cooling effect is sufficient, and system energy is not wasted.

[0033] Example 2

[0034] like Figure 8 As shown, an automotive air conditioner includes the aforementioned air conditioning compressor 8, an engine pulley 11, a tensioner assembly 10, and multiple compressor belts 9. The tensioner assembly 10 includes multiple pulleys of different diameters. One end of each compressor belt 9 is mounted on the engine pulley 11, and the other end of each compressor belt 9 is connected to a pulley and a belt pulley, respectively. The engine pulley 11 is directly or indirectly connected to the engine drive shaft to transmit the engine drive shaft speed to the compressor 9. The compressor 9 and the tensioner assembly 10 are fixed to the engine by a bracket structure. When the engine is running, the engine pulley 11 rotates under the drive of the engine drive shaft, obtaining a certain speed, and the engine pulley 11 then drives the compressor 8 to operate via the compressor belts 9. The tension of the compressor belts 9 is adjusted by the displacement of the tensioner assembly 10. Compressor belts of different lengths correspond to compressor pulleys of different diameters. Whether each compressor pulley engages with its respective suction cup to drive the compressor main shaft to rotate and make the compressor work is determined by the operating status of the entire vehicle and the air conditioning system.

[0035] Example 3

[0036] A vehicle equipped with the aforementioned vehicle air conditioner.

[0037] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0038] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0039] Those skilled in the art will understand that the modules, units, or groups of devices in the examples disclosed herein can be arranged in the device as described in this embodiment, or alternatively, can be located in one or more devices different from the device in this example. The modules in the foregoing examples can be combined into a single module or further divided into multiple sub-modules.

[0040] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or groups in the embodiments can be combined into a single module, unit, or group, and further, they can be divided into multiple sub-modules, sub-units, or sub-groups. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0041] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0042] As used herein, unless otherwise specified, the use of ordinal numbers such as “first,” “second,” “third,” etc., to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects being described must have a given order in time, space, ordering, or any other manner.

[0043] Although the present invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the present invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and edibility purposes, and not for interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. Regarding the scope of the invention, the disclosure made is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

[0044] Finally, it should be noted that this utility model does not explain in detail the common knowledge recognized by those skilled in the art. The above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle air conditioning compressor, comprising a compressor main shaft and a pulley mounted on the compressor main shaft; characterized in that: The compressor has multiple pulleys, each with a different diameter; each pulley is equipped with an electromagnetic coil, and the compressor main shaft is fixedly mounted with multiple suction cups that cooperate with each electromagnetic coil.

2. The vehicle air conditioning compressor according to claim 1, characterized in that: All of the electromagnetic coils are electrically connected to a control unit, which controls the switching on and off of each electromagnetic coil.

3. The vehicle air conditioning compressor according to claim 1 or 2, characterized in that: The suction cup includes a connecting plate, a metal spring, and a wear-resistant plate connected in sequence from the inside to the outside along the radial direction of the suction cup; the connecting plate is fixedly installed on the compressor main shaft, and the metal spring has an elastic tendency to move the wear-resistant plate away from the pulley.

4. The vehicle air conditioning compressor according to claim 1 or 2, characterized in that: The belt pulley has three pulleys.

5. The automotive air conditioning compressor according to claim 2, characterized in that: It also includes a compressor housing, a pulley support, and bearings; one of the pulleys is mounted on the compressor housing via a bearing, and the other pulleys are mounted on the pulley support via bearings.

6. The air conditioning compressor according to claim 5, characterized in that: The pulley support includes an outer shell and a support; the cross-section of the support is in the shape of a straight line parallel to the compressor main shaft; the cross-section of the outer shell is in the shape of an L, with one end connected to the compressor housing and the other end connected to the middle of the support, dividing the support into a left half and a right half; the two pulleys are located in the left half and the right half, respectively.

7. A vehicle air conditioner, characterized in that: The system includes an air conditioning compressor as described in any one of claims 1-6, and further includes an engine pulley, a tensioner assembly, and multiple compressor belts; the tensioner assembly includes multiple pulleys of different diameters. One end of each compressor belt is mounted on an engine pulley, and the other end of each compressor belt is connected to a pulley and a belt pulley, respectively.

8. A vehicle, characterized in that: It is equipped with the vehicle air conditioner as described in claim 7.

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