Rotor type automobile air conditioner compressor

Abstract

The invention discloses a rotor type automobile air conditioner compressor which does not generate impact noise. Comprising a pump body, the pump body comprises a front end plate, a rotor, a cylinder body, a rear end plate and a plurality of blades, the rotor comprises a rotating shaft and a rotating body, major-arc-shaped mounting holes corresponding to the blades are formed in the inner wall of the cylinder body, strip-shaped rotor grooves corresponding to the blades are formed in the rotating body in the radial direction, and major-arc-shaped hinge joints are arranged on the outer sides of the blades. Hinge joints on the outer sides of the blades are hinged into mounting holes in the cylinder body, and the inner sides of the blades are arranged in rotor grooves in the rotating body in a sliding fit mode. The inner sides of the blades are dovetail-shaped, the two ends of the inner sides of the blades are rounded, and in the process that the blades pull the cylinder body to rotate, the two ends of the inner sides of the blades are kept in contact with the two groove walls of the rotor groove; the notch of the rotor groove is chamfered, the thickness of the outer side of the blade is smaller than that of the inner side of the blade, concave-arc-shaped receding structures are arranged on the two side faces of the blade, and in the process that the blade swings around the hinge joint, the receding structures on the two side faces of the blade and the notch of the rotor groove are matched for receding.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air-conditioning compressors, and in particular to a rotor-type automobile air-conditioning compressor. Background Art

[0002] As the core component of the automobile air conditioning system, the main function of the automobile air conditioning compressor is to compress the refrigerant to increase its temperature and pressure, thereby realizing the refrigeration cycle. With the development of technology and the increase in customer demand, the requirements for air conditioning compressors are not only high performance and efficiency, but also low working noise, thereby improving the comfort of the vehicle air conditioning.

[0003] 1) In general, in the initial stage of operation, the rotor compressor mainly relies on centrifugal force to throw out the blades. Before entering a stable working state, there will be a sound of the blades hitting the inner wall of the cylinder, which is easy to identify and sometimes causes customer complaints.

[0004] 2) Most existing rotary compressors have a five-blade structure, that is, the cylinder, rotor and blades form five working chambers, which are evenly distributed; during operation, the energy of the order response will resonate at the 5th order (or an integer multiple of 5, mainly the 20th order). According to actual vehicle verification, customers are more sensitive to this type of order noise. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a rotor-type automobile air-conditioning compressor that does not generate impact noise.

[0006] The object of the present invention is achieved in that:

[0007] A rotor-type automobile air-conditioning compressor comprises a pump body, wherein the pump body comprises a front end plate, a rotor, a cylinder body, a rear end plate and a plurality of blades, and the rotor comprises a rotating shaft and a rotating body.

[0008] The inner wall of the cylinder body is provided with a mounting hole in a superior arc shape corresponding to the blade, and the swivel body is provided with a strip-shaped rotor groove in the radial direction corresponding to the blade, and the outer side of the blade is provided with a hinge head in a superior arc shape, the hinge head on the outer side of the blade is hinged in the mounting hole on the cylinder body, and the inner side of the blade is slidably matched in the rotor groove on the swivel body;

[0009] The inner side of the blade is dovetail-shaped, and both ends of the inner side of the blade are rounded (referring to the arc structure that meets the working conditions). When the blade pulls the cylinder body to rotate, the inner ends of the blade remain in contact with the two groove walls of the rotor groove;

[0010] The notch of the rotor slot is chamfered (referring to the arc structure that meets the working conditions), the outer thickness of the blade is smaller than the inner thickness, and the two side surfaces of the blade are provided with concave arc-shaped yielding structures. When the blade swings around the hinge joint, the yielding structures on the two side surfaces of the blade and the notch of the rotor slot cooperate to yield.

[0011] Preferably, the rotor and the cylinder body are eccentrically arranged, and a plurality of working chambers are separated between the rotor and the cylinder body by blades. An air inlet is provided at the front end plate corresponding to the air intake area of ​​the working chamber, and an air outlet is provided at the rear end plate corresponding to the air exhaust area of ​​the working chamber. The low-temperature and low-pressure refrigerant enters the cylinder body from the air inlet of the front end plate, and the high-temperature and high-pressure refrigerant after compression is discharged from the air outlet of the rear end plate.

[0012] Preferably, the number of blades is seven, and seven evenly distributed working chambers are separated between the rotor and the cylinder body by the blades, and the automobile has a four-cylinder engine.

[0013] Preferably, the cylinder body is fitted in the inner hole of the compressor housing and is rotatable, and a lubricating oil passage for the cylinder body is provided on the compressor housing.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0015] 1. One end of the blade is installed in the hole on the inner wall of the cylinder. When rotating, the blade does not need to be thrown out by centrifugal force and does not produce impact noise.

[0016] 2. The shape of the blade does not interfere with the cylinder body and the rotor. The outer side of the blade is tightly installed with the mounting hole on the inner wall of the cylinder body, which can drive the cylinder body to rotate. The contact area between the inner side of the blade and the rotor groove is small, so it is not easy to be stuck by foreign objects.

[0017] 3. The seven-blade structure is adopted, that is, the cylinder body, rotor and blades form 7 working chambers, and they are evenly distributed; in the working process, the energy of the order response will be superimposed at the 7th order and its integer multiples. Since most mainstream models are 4-cylinder engines, at the commonly used speed (1500-2500RPM), there will be no 10th and 20th order resonances, and this can be verified by actual vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is the working schematic diagram of the blade;

[0020] Figure 3 A schematic diagram showing the comparison between the blade of the present invention and the prior art;

[0021] Figure 4 It is a structural schematic diagram of the front end plate and the rear end plate. DETAILED DESCRIPTION

[0022] See also Figure 1 , Figure 2A rotor-type automobile air-conditioning compressor, the compressor as a whole is mainly composed of a clutch, a head cover, a shell, and a pump body. The pump body includes a front end plate, a rotor, a cylinder body, a rear end plate, and a plurality of blades, and the rotor includes a rotating shaft and a rotating body. The cylinder body is fitted in the inner hole of the compressor shell and can rotate, and a lubricating oil path for the cylinder body is provided on the compressor shell.

[0023] An arc-shaped mounting hole is provided on the inner wall of the cylinder body corresponding to the blade, a strip-shaped rotor groove is provided on the swivel body corresponding to the blade in the radial direction, an arc-shaped hinge head is provided on the outer side of the blade, the hinge head on the outer side of the blade is hinged in the mounting hole on the cylinder body, and the inner side of the blade is slidably fitted in the rotor groove on the swivel body.

[0024] The inner side of the blade is dovetail-shaped, and both inner ends of the blade are rounded. During the process of the blade pulling the cylinder body to rotate (including the blade swinging process and the blade sliding and extending along the rotor slot), the inner ends of the blade (adapting through circular arc shape when rotating) remain in contact with the two slot walls of the rotor slot.

[0025] The notch of the rotor groove is chamfered, and the outer thickness of the blade is smaller than the inner thickness, so that the outer side of the blade does not interfere with the cylinder body and the rotor. The two side surfaces of the blade are provided with concave arc-shaped giving way structures (waist-shaped). During the swinging process of the blade around the hinge joint, the giving way structures on the two side surfaces of the blade and the notch (chamfered corner) of the rotor groove cooperate to give way.

[0026] The rotor and the cylinder are arranged eccentrically, and multiple working chambers are separated by blades between the rotor and the cylinder. The front end plate is provided with an air inlet corresponding to the suction area of ​​the working chamber, and the rear end plate is provided with an air outlet corresponding to the exhaust area of ​​the working chamber. The low-temperature and low-pressure refrigerant enters the cylinder from the air inlet of the front end plate, and the high-temperature and high-pressure refrigerant is discharged from the air outlet of the rear end plate after compression. The head cover is provided with an air inlet, and the low-temperature and low-pressure refrigerant enters the pump body from the air inlet of the front end plate, and the high-temperature and high-pressure refrigerant is discharged from the air outlet of the rear end plate after compression, and enters the air conditioning system through the exhaust port set at the rear of the shell.

[0027] In this embodiment, there are seven blades, and seven evenly distributed working chambers are separated between the rotor and the cylinder body by the blades, and the car has a four-cylinder engine. In the working process, the energy of the order response will be superimposed at the 7th order (or an integer multiple of 7). Since most mainstream models are 4-cylinder engines, at common speeds, 10th and 20th order resonances will not occur, and can be verified by actual vehicles.

[0028] The front end plate is installed on the end face of the outer shell, and the cylinder body, rotor, blade rear end plate and other components are arranged between the front end plate and the inner hole of the outer shell; when working, the seven blades are locked with the cylinder body mounting holes throughout the process (no need to be thrown out by centrifugal force, and no related impact noise will be generated). When the rotor rotates clockwise, the seven blades pull the cylinder body to rotate in the inner hole of the outer shell. In this way, the seven working chambers complete the intake, compression and exhaust processes. The rotor rotates one circle to achieve 7 intake and exhaust times.

[0029] Design description of each component:

[0030] The front end plate is provided with an air inlet, and the end surface is provided with an air outlet groove at a position corresponding to the air outlet of the rear end plate.

[0031] An air outlet is arranged on the rear end plate, and an air inlet groove is arranged on the end surface at a position corresponding to the air inlet of the front end plate.

[0032] To form a circulation loop.

[0033] The inner ring of the cylinder body is provided with blade mounting holes, the outer ring cooperates with the inner hole of the outer shell, and is designed with a special oil circuit to ensure lubrication.

[0034] The rotor is composed of a rotating shaft and a rotating body. The long axis end of the rotating shaft is connected to the clutch to ensure rotation. The rotating body is provided with seven blade slots. The rotor and the cylinder body are eccentrically designed to meet the needs of compression work.

[0035] The small end of the blade matches with the mounting hole on the inner wall of the cylinder body, and the large end is installed in the blade groove.

[0036] When working, the blades pull the cylinder to rotate.

[0037] See also Figure 3 , the blade structure of the present invention is compared with the existing ones:

[0038] View A (this patent application)

[0039] 1. One end of the blade is installed in the hole on the inner wall of the cylinder. When rotating, the blade does not need to be thrown out by centrifugal force.

[0040] 2. The blade has a special shape. It needs to be considered that it does not interfere with the cylinder and the rotor within the full rotation range. Therefore, the shape is waist-shaped, and the shapes at both ends also take installation and function into consideration. The front end of the blade is tightly installed with the inner wall hole of the cylinder (which can drive the cylinder to rotate), and the rear end of the blade has a small contact area with the rotor slot, so it is not easy to be stuck by foreign objects.

[0041] 3. Low operating noise.

[0042] View B (Prior Art)

[0043] 1. The blades are installed in the rotor slots and need to be thrown out by centrifugal force when rotating.

[0044] 2. The blades are tightly attached to the wall of the rotor slot and are in continuous friction. If hard particles are attached to the wall, it is easier for them to get stuck and cannot be thrown out.

[0045] 3. The running noise is loud.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A rotor-type automobile air-conditioning compressor, comprising a pump body, wherein the pump body comprises a front end plate, a rotor, a cylinder body, a rear end plate and a plurality of blades, wherein the rotor comprises a rotating shaft and a rotating body, characterized in that: The inner wall of the cylinder body is provided with a mounting hole in a superior arc shape corresponding to the blade, and the swivel body is provided with a strip-shaped rotor groove in the radial direction corresponding to the blade, and the outer side of the blade is provided with a hinge head in a superior arc shape, the hinge head on the outer side of the blade is hinged in the mounting hole on the cylinder body, and the inner side of the blade is slidably matched in the rotor groove on the swivel body; The inner side of the blade is dovetail-shaped, and both ends of the inner side of the blade are rounded. When the blade pulls the cylinder body to rotate, the inner ends of the blade remain in contact with the two groove walls of the rotor groove; The notch of the rotor slot is rounded, the outer thickness of the blade is smaller than the inner thickness, and the two sides of the blade are provided with concave arc-shaped yielding structures. During the swinging process of the blade around the hinge joint, the yielding structures on the two sides of the blade and the notch of the rotor slot cooperate to yield.

2. A rotary automobile air-conditioning compressor according to claim 1, characterized in that: The rotor and the cylinder body are arranged eccentrically, and multiple working chambers are separated between the rotor and the cylinder body by blades. The front end plate is provided with an air inlet corresponding to the suction area of ​​the working chamber, and the rear end plate is provided with an air outlet corresponding to the exhaust area of ​​the working chamber. The low-temperature and low-pressure refrigerant enters the cylinder body from the air inlet of the front end plate, and the high-temperature and high-pressure refrigerant after compression is discharged from the air outlet of the rear end plate.

3. A rotor-type automobile air-conditioning compressor according to claim 1 or 2, characterized in that: The number of blades is seven, and seven evenly distributed working chambers are divided between the rotor and the cylinder body by the blades. The automobile has a four-cylinder engine.

4. The rotary automobile air-conditioning compressor according to claim 1, characterized in that: The cylinder body is fitted in the inner hole of the compressor shell and can rotate. The compressor shell is provided with a lubricating oil passage for the cylinder body.

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