Compressor and air conditioner

Abstract

The present invention discloses a compressor and an air conditioner, wherein the compressor comprises a shell, a crankshaft is arranged in the shell, a first magnet is arranged on the upper end surface of the crankshaft, a support frame is arranged in the shell and is located above the crankshaft, a second magnet corresponding to the first magnet is arranged on the lower end surface of the support frame, and the first magnet and the second magnet have opposite magnetic properties on the opposite side. With such arrangement, the first magnet and the second magnet generate magnetic field force relative to each other, so that the crankshaft obtains an upward magnetic field attraction force, reduces the force between the lower thrust surface of the crankshaft and the lower flange end surface, and further reduces the power consumption generated by the friction between the lower thrust surface of the crankshaft and the lower flange end surface, and also improves the reliability of the compressor to a certain extent, and solves the problem in the prior art that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and more particularly to a compressor and an air conditioner. Background Art

[0002] The rotary vertical compressor achieves air intake and exhaust by causing the volume of the cylinder cavity to change due to the rotation of the crankshaft. Figure 1 As shown, the crankshaft is an important transmission part. During operation, the lower thrust surface of the crankshaft contacts the end surface of the lower flange to form a friction pair, which bears the axial force transmitted by the rotor assembly and the crankshaft, and is the main axial load point of the compressor pump body structure. During the long-term operation of the compressor, the lower thrust surface of the crankshaft contacts the end surface of the lower flange to generate friction, and there are different degrees of wear. The motor needs to provide a larger torque to overcome the friction and consume more energy, which will directly affect the power consumption of the compressor and even affect the reliability of the compressor. Therefore, how to solve the problem in the prior art that the friction between the lower thrust surface of the crankshaft and the end surface of the lower flange affects the power consumption and reliability of the compressor has become an important technical problem to be solved by those skilled in the art. Summary of the invention

[0003] The object of the present invention is to provide a compressor and an air conditioner to solve the problem in the prior art that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A compressor provided by the present invention includes a shell, a crankshaft is arranged in the shell, a first magnet is arranged on the upper end surface of the crankshaft, a support frame is arranged in the shell, the support frame is located above the crankshaft, a second magnet corresponding to the first magnet is arranged on the lower end surface of the support frame, and the magnetism of the first magnet on the side opposite to the second magnet is opposite.

[0006] Preferably, a third magnet is further provided on the lower end surface of the crankshaft, a fourth magnet corresponding to the third magnet is provided on the inner wall of the bottom of the shell, and the magnetism of the third magnet on the side opposite to the fourth magnet is the same.

[0007] Preferably, the inner wall of the bottom of the shell is provided with a support body which is opposite to the lower end surface of the crankshaft, and the fourth magnet is arranged on the upper end surface of the support body.

[0008] Preferably, the first magnet, the second magnet, the third magnet and the fourth magnet are all annular magnets.

[0009] Preferably, the support body is a hollow structure having a cavity inside, the upper end surface of the support body is provided with an opening communicating with the cavity, and the peripheral side wall of the support body is provided with an oil inlet hole communicating with the cavity.

[0010] Preferably, a gap is provided between the first magnet and the second magnet, and between the third magnet and the fourth magnet, and the gap is 0.05 mm-5 mm.

[0011] Preferably, the support frame is provided with an oil drain hole which is arranged through the support frame along the axial direction.

[0012] Preferably, the annular magnet is a circular annular magnet, and the outer diameter of the second magnet is greater than the outer diameter of the first magnet, and the outer diameter of the fourth magnet is greater than the outer diameter of the third magnet.

[0013] Preferably, the annular magnet is composed of at least two sector-shaped unit bodies which are spaced apart from each other.

[0014] Preferably, there are at least two oil inlet holes, which are distributed along the circumference of the support body.

[0015] Preferably, the first magnet, the second magnet, the third magnet and the fourth magnet are all permanent magnets.

[0016] Preferably, the material of the permanent magnet is neodymium iron boron permanent magnet material.

[0017] Preferably, the compressor is a rotary vertical compressor.

[0018] The present invention also provides an air conditioner, comprising a compressor, wherein the compressor is the compressor as described in any one of the above items.

[0019] In the technical solution provided by the present invention, a compressor includes a shell, a crankshaft is arranged in the shell, a first magnet is arranged on the upper end surface of the crankshaft, a support frame is arranged in the shell and is located above the crankshaft, a second magnet corresponding to the first magnet is arranged on the lower end surface of the support frame, and the first magnet and the second magnet have opposite magnetic properties on the opposite side. In this arrangement, the first magnet and the second magnet generate magnetic field force relative to each other, so that the crankshaft obtains an upward magnetic field attraction, reducing the force between the lower thrust surface of the crankshaft and the lower flange end surface, thereby reducing the power consumption generated by the friction between the lower thrust surface of the crankshaft and the lower flange end surface, and to a certain extent, also improving the reliability of the compressor, solving the problem in the prior art that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a compressor in the prior art;

[0022] Figure 2 A schematic diagram of the structure of a compressor in an embodiment of the present invention;

[0023] Figure 3 It is a partial schematic diagram of the lower end of the crankshaft in an embodiment of the present invention;

[0024] Figure 4 It is a partial schematic diagram of the upper end of the crankshaft in an embodiment of the present invention;

[0025] Figure 5 The structure of the ring magnet in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 6 The structure of the ring magnet in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 7 The structure of the ring magnet in the embodiment of the present invention is shown in FIG. Figure 3 .

[0028] Figure 1-Figure 7 middle:

[0029] Shell-1, crankshaft-2, first magnet-3, support frame-4, second magnet-5, third magnet-6, support body-7, fourth magnet-8, cavity-9, oil inlet hole-10, oil outlet hole-11, fan-shaped unit body-12. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0031] This specific embodiment provides a compressor and an air conditioner, which solves the problem in the prior art that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor.

[0032] The following embodiments are described in detail with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims. In addition, the entire content of the structure represented by the following embodiments is not limited to the solution required as the invention described in the claims.

[0033] It should be noted that the directions "up" and "down" mentioned in the text refer to Figure 2 The compressor is placed in the state shown in the figure. The up and down directions in the figure are the above-mentioned up and down positions. The relatively upper positions of the components in the figure are their upper ends and upper end surfaces, and the relatively lower positions of the components in the figure are their lower ends and lower end surfaces.

[0034] Please refer to the attached Figure 1-7 The compressor provided in this embodiment is a rotary vertical compressor, including a housing 1, in which a crankshaft 2 is arranged. Generally, the crankshaft 2 is a hollow structure and cylindrical, which is convenient for normal oil supply of the shaft system. The upper end of the crankshaft 2 is the long axis end of the crankshaft 2, which cooperates with the motor rotor, and the lower end of the crankshaft 2 is the short axis end of the crankshaft 2, which cooperates with the pump body assembly. The upper end surface of the crankshaft 2 is provided with a first magnet 3, and a support frame 4 is provided in the housing 1. The support frame 4 is located above the crankshaft 2, such as Figure 2 As shown, the inner wall of the housing 1 can be fixedly provided with a connecting angle plate by welding, and the support frame 4 can be fixedly connected to the connecting angle plate by bolts, so as to be fixed above the crankshaft 2. Accordingly, the support frame 4 can be designed to be cylindrical and opposite to the crankshaft 2. The lower end surface of the support frame 4 is provided with a second magnet 5 corresponding to the first magnet 3, and the magnetic properties of the first magnet 3 and the second magnet 5 are opposite. In this way, by arranging the first magnet at the end of the long axis of the crankshaft, arranging the support frame in the housing cavity, and arranging the second magnet at the end of the support frame, the first magnet and the second magnet are opposite to each other and generate a magnetic field force, so that the crankshaft obtains an upward magnetic field attraction, thereby reducing the gravity of the crankshaft and the motor rotor, reducing the force between the lower thrust surface of the crankshaft and the lower flange end surface, and further reducing the power consumption generated by the friction between the lower thrust surface of the crankshaft and the lower flange end surface, and to a certain extent, also improving the reliability and energy efficiency level of the compressor. The structure is simple and easy to implement, effectively avoiding mechanical friction loss, and solving the problem that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor in the prior art.

[0035] In addition, during the operation of the compressor, the long end of the crankshaft Figure 1The motor rotor is sleeved on the upper end of the middle crankshaft, and the long axis of the crankshaft is a cantilever beam. Therefore, when the compressor runs at a high speed, the long axis end of the crankshaft will bend due to the centrifugal force, which will cause the compressor to run unsteadily and the contact part between the long axis end of the crankshaft and the upper flange will be worn. By setting the first magnet and the second magnet, the upward magnetic field attraction generated between the two can solve the problem that the long axis end of the crankshaft will bend due to the centrifugal force when the compressor runs at a high speed, thereby solving the problem that the contact part of the flange on the long axis of the crankshaft will be worn due to the deflection of the long axis of the crankshaft.

[0036] Furthermore, a third magnet 6 is also provided on the lower end face of the crankshaft 2, and a fourth magnet 8 corresponding to the third magnet 6 is provided on the inner wall of the bottom of the shell 1, and the magnetism of the third magnet 6 and the fourth magnet 8 on the opposite side are the same. In this arrangement, the magnetic poles of the third magnet and the fourth magnet are opposite to each other and generate a magnetic field force, so that the crankshaft obtains an upward magnetic field repulsion force, thereby reducing the gravity of the crankshaft and the motor rotor, reducing the force between the lower thrust surface of the crankshaft and the lower flange end surface, and further reducing the power consumption generated by the friction between the lower thrust surface of the crankshaft and the lower flange end surface, and to a certain extent, also improving the reliability of the compressor and the overall performance of the machine. The structure is simple and easy to implement, which effectively avoids mechanical friction losses, and further solves the problem in the prior art that the contact friction between the lower thrust surface of the crankshaft and the lower flange end surface affects the power consumption and reliability of the compressor. It should be noted that the "bottom" of the shell mentioned in the text refers to Figure 2 As shown, the compressor casing is relatively located at the lower position.

[0037] because Figure 1 The bottom of the middle shell 1 is an arc-shaped shell, and the distance between it and the lower end face of the crankshaft 1 is relatively large. In order to enable the third magnet 6 and the fourth magnet 8 to better reduce power consumption, the inner wall of the bottom of the shell 1 is provided with a support body 7 opposite to the lower end face of the crankshaft 2, and the fourth magnet 8 is arranged on the upper end face of the support body 7. In this arrangement, the support body supports the fourth magnet, making it closer to the third magnet, and the magnetic field force is stronger, which can better offset the gravity of the crankshaft and the motor rotor. Optionally, as Figure 2 As shown, the support body 7 can be fixedly connected to the inner wall of the bottom of the housing 1 by bolts. Accordingly, the support body 7 can also be designed to be cylindrical, opposite to the crankshaft 2.

[0038] In this embodiment, the first magnet 3, the second magnet 5, the third magnet 6 and the fourth magnet 8 are all annular magnets. In this way, the middle of the magnet is a hollow structure, which is convenient for matching with the crankshaft, does not affect the overall oil supply of the compressor shaft system, and reduces the mass of the magnet, reducing unnecessary energy loss of the compressor.

[0039] In the preferred embodiment of this embodiment, Figure 3As shown, the support body 7 is a hollow structure with a cavity 9 inside, the upper end surface of the support body 7 is provided with an opening connected to the cavity 9, and the peripheral side wall of the support body 7 is provided with an oil inlet hole 10 connected to the cavity 9. In this way, the lubricating oil at the bottom of the shell can flow into the internal cavity of the support body. Since the support body is opposite to the crankshaft, it is convenient for the lubricating oil to flow to the crankshaft, thereby better realizing the oil supply to components such as the pump body. Preferably, there are at least two oil inlet holes 10, and they are evenly distributed along the circumference of the support body 7, so that the lubricating oil around the support body can be quickly introduced into the cavity so that the hollow structure of the crankshaft can absorb oil.

[0040] In order to generate sufficient magnetic field force between the magnets, there are gaps between the first magnet 3 and the second magnet 5, and between the third magnet 6 and the fourth magnet 8, and the gap size is 0.05 mm-5 mm. Figure 3 As shown, the gap between the third magnet 6 and the fourth magnet 8 is d1. Figure 4 As shown, the gap between the first magnet 3 and the second magnet 5 is d2. If d1 and d2 are too small, impurities inside the compressor will enter between the two magnets, causing friction between the magnets and causing magnet wear. The increase in friction will also increase the power consumption of the compressor, thereby affecting the efficiency of the compressor; if d1 and d2 are too large, the attraction / repulsion between the magnets will drop sharply, resulting in too small support and attraction for the crankshaft, and the magnetic field force is not enough to offset the gravity of the crankshaft and the rotor assembly mounted thereon. At this time, in order to obtain sufficient magnetic field force, the thickness of the magnet must be increased, which not only causes an increase in the production cost of the compressor, but also increases the weight of the compressor, which is not conducive to the lightweighting of the compressor. Therefore, when d1 and d2 are within the range of 0.05 mm to 5 mm, sufficient magnetic field force can be provided, the power consumption of the compressor can be reduced, and the reliability of the compressor can be improved.

[0041] In this embodiment, the support frame 4 is provided with an oil drain hole 11 extending through the axial direction of the support frame 4. Figure 4 Shown, oil drain hole 11 can be arranged at support frame 4 center, is convenient for crankshaft lubricating oil to discharge.In addition, the crankshaft major axis end sidewall also can be provided with through hole, is convenient for crankshaft lubricating oil to discharge.

[0042] As an optional embodiment, the first magnet 3, the second magnet 5, the third magnet 6 and the fourth magnet 8 are all annular magnets, and the outer diameter of the second magnet 5 is greater than the outer diameter of the first magnet 3, and the outer diameter of the fourth magnet 8 is greater than the outer diameter of the third magnet 6. In this way, it can be ensured that the outer edge of the magnet on the crankshaft is always within the range of action of the magnet on the support body and the support frame, and the outer edge of the crankshaft can still receive sufficient support and attraction. In addition, the inner diameter of the third magnet 6 and the fourth magnet 8 is determined according to the size of the hollow structure of the short shaft end of the crankshaft, and the size of the upper end surface opening and the cavity 9 of the support body 7 can be the same as the inner diameter of the fourth magnet 8; the inner diameter of the first magnet 3 and the second magnet 5 is determined according to the size of the hollow structure of the long shaft end of the crankshaft, and the size of the oil drain hole 11 can be the same as the inner diameter of the second magnet 5; this can not only avoid the magnet blocking the hollow structure of the crankshaft and affecting the oil supply, but also make each magnet effectively supported and fixed more firmly.

[0043] When the forces between the interacting magnets are uneven, the magnets may be broken or crushed. Therefore, in a specific embodiment of the present invention, the annular magnet is composed of at least two spaced-apart sector-shaped units 12. Figure 5-7 As shown, the annular magnet is respectively composed of two, three or four sector-shaped unit bodies 12, and each sector-shaped unit body 12 is evenly distributed to form a circular ring structure. Of course, in other embodiments, the number of sector-shaped unit bodies 12 can be changed, and is determined according to the assembly dimensions of the crankshaft 2, the support frame 4, and the support body 7. In this way, it is possible to avoid the complete magnet being destroyed due to uneven force to form fragments, thereby affecting the effect of the magnetic field force, and ensure that the crankshaft is subjected to a uniform and stable magnetic field force, thereby reducing the friction between the crankshaft and the flange end face.

[0044] In this embodiment, the first magnet 3, the second magnet 5, the third magnet 6 and the fourth magnet 8 are all permanent magnets, which can maintain their magnetism for a long time, have a long service life, and do not need to be frequently replaced, thereby maintaining the reliability of the compressor. Among them, the material of the permanent magnet is neodymium iron boron permanent magnet material, which has a large magnetic energy product, has a better effect of generating magnetic field force, and has excellent magnetic properties. In addition, each magnet can also be a magnet with a magnetic layer on the surface, as long as it can generate enough magnetic field force to meet the use requirements.

[0045] This embodiment also provides an air conditioner, including a compressor, which is the compressor described above.

[0046] It should be noted that the devices or components with different functions in the above-mentioned embodiments can be combined. For example, in the preferred solution of this embodiment, the compressor is a rotary vertical compressor, including a housing 1, a crankshaft 2 is arranged in the housing 1, a first magnet 3 is arranged on the upper end surface of the crankshaft 2, a support frame 4 is arranged in the housing 1, the support frame 4 is located above the crankshaft 2, a second magnet 5 corresponding to the first magnet 3 is arranged on the lower end surface of the support frame 4, the first magnet 3 and the second magnet 5 have opposite magnetic properties on the side opposite to each other, and the support frame 4 is provided with an oil drain hole 11 that is arranged through the axial direction of the support frame 4. A third magnet 6 is also arranged on the lower end surface of the crankshaft 2, a support body 7 opposite to the lower end surface of the crankshaft 2 is arranged on the inner wall of the bottom of the housing 1, and a fourth magnet 8 corresponding to the third magnet 6 is arranged on the upper end surface of the support body 7, and the third magnet 6 and the fourth magnet 8 have the same magnetic properties on the side opposite to each other. The support body 7 is a hollow structure with a cavity 9 inside. The upper end surface of the support body 7 is provided with an opening connected to the cavity 9, and the peripheral side wall of the support body 7 is provided with an oil inlet hole 10 connected to the cavity 9. There are at least two oil inlet holes 10, which are evenly distributed along the circumference of the support body 7.

[0047] In this embodiment, the first magnet 3, the second magnet 5, the third magnet 6 and the fourth magnet 8 are all annular magnets, and the outer diameter of the second magnet 5 is greater than the outer diameter of the first magnet 3, and the outer diameter of the fourth magnet 8 is greater than the outer diameter of the third magnet 6. Each magnet is composed of at least two spaced sector units 12, and is a permanent magnet made of neodymium iron boron permanent magnet material. There is a gap between the first magnet 3 and the second magnet 5, and between the third magnet 6 and the fourth magnet 8, and the gap is 0.05 mm-5 mm.

[0048] In this arrangement, the magnetic poles of the first magnet and the second magnet are opposite to each other and generate a magnetic field force, so that the crankshaft obtains an upward magnetic field attraction force, and the third magnet and the fourth magnet are opposite to each other and generate a magnetic field force, so that the crankshaft obtains an upward magnetic field repulsion force, thereby reducing or offsetting the gravity of the crankshaft and the motor rotor, reducing the force between the lower thrust surface of the crankshaft and the end face of the lower flange, and thereby reducing the power consumption generated by the friction between the lower thrust surface of the crankshaft and the end face of the lower flange, and at the same time solving the problem that when the compressor runs at high speed, the long axis end of the crankshaft will bend due to the centrifugal force and the contact part with the upper flange will wear, thereby improving the reliability and energy efficiency of the compressor to a certain extent. The structure is simple and easy to implement, effectively avoiding mechanical friction loss, and solving the problem that the contact friction between the lower thrust surface of the crankshaft and the end face of the lower flange affects the power consumption and reliability of the compressor in the prior art.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A compressor, characterized in that: The invention comprises a shell (1), wherein a crankshaft (2) is arranged inside the shell (1), a first magnet (3) is arranged on the upper end surface of the crankshaft (2), a support frame (4) is arranged inside the shell (1), the support frame (4) is located above the crankshaft (2), a second magnet (5) corresponding to the first magnet (3) is arranged on the lower end surface of the support frame (4), and the magnetism of the first magnet (3) and the second magnet (5) on the side opposite to each other is opposite.

2. The compressor according to claim 1, characterized in that The lower end surface of the crankshaft (2) is also provided with a third magnet (6), and the inner wall of the bottom of the shell (1) is provided with a fourth magnet (8) corresponding to the third magnet (6), and the magnetic properties of the third magnet (6) and the fourth magnet (8) on the side opposite to each other are the same.

3. The compressor according to claim 2, characterized in that The inner wall of the bottom of the housing (1) is provided with a support body (7) which is opposite to the lower end surface of the crankshaft (2), and the fourth magnet (8) is arranged on the upper end surface of the support body (7).

4. The compressor according to claim 3, characterized in that The first magnet (3), the second magnet (5), the third magnet (6) and the fourth magnet (8) are all annular magnets.

5. The compressor according to claim 4, characterized in that The support body (7) is a hollow structure having a cavity (9) inside. The upper end surface of the support body (7) is provided with an opening connected to the cavity (9), and the peripheral side wall of the support body (7) is provided with an oil inlet hole (10) connected to the cavity (9).

6. The compressor according to claim 2, characterized in that There is a gap between the first magnet (3) and the second magnet (5), and between the third magnet (6) and the fourth magnet (8), and the gap is 0.05 mm to 5 mm.

7. The compressor according to claim 4, characterized in that The support frame (4) is provided with an oil drain hole (11) which is arranged to penetrate along the axial direction of the support frame (4).

8. The compressor according to claim 4, characterized in that The annular magnet is a circular annular magnet, the outer diameter of the second magnet (5) is greater than the outer diameter of the first magnet (3), and the outer diameter of the fourth magnet (8) is greater than the outer diameter of the third magnet (6).

9. The compressor according to claim 4, characterized in that The annular magnet is composed of at least two sector-shaped unit bodies (12) arranged at intervals.

10. The compressor according to claim 5, characterized in that There are at least two oil inlet holes (10), which are distributed along the circumference of the support body (7).

11. The compressor according to claim 2, characterized in that The first magnet (3), the second magnet (5), the third magnet (6) and the fourth magnet (8) are all permanent magnets.

12. The compressor according to claim 11, characterized in that The material of the permanent magnet is neodymium iron boron permanent magnet material.

13. The compressor according to any one of claims 1 to 12, characterized in that: The compressor is a rotary vertical compressor.

14. An air conditioner, comprising a compressor, characterized in that: The compressor is a compressor as described in any one of claims 1-13.

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