Reciprocating compressor and refrigeration and heating apparatus

Abstract

The application provides a reciprocating compressor and a refrigeration and heating device. The reciprocating compressor comprises a shell, a pump body, a motor and an elastic support assembly. The reciprocating compressor further comprises a limiting structure installed in the shell. The limiting structure is configured to limit the position of the pump body and the motor in the shell when the reciprocating compressor shakes. The limiting structure is spaced apart from the inner surface of the shell when the reciprocating compressor is stationary or vibrates. The reciprocating compressor provided by the application sets the limiting structure in the shell. The position of the pump body and the motor in the shell is limited by the limiting structure. When the reciprocating compressor shakes greatly, the amplitude of the shaking of the pump body and the motor in the shell can be limited. The limiting structure is also spaced apart from the inner surface of the shell. When the reciprocating compressor vibrates slightly, the vibration of the shell can be reduced and transmitted to the pump body and the motor, so that the pump body and the motor can work normally and stably when moving normally, and the service life of the reciprocating compressor can be ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressors, and more particularly relates to a reciprocating compressor and a refrigeration and heating device. BACKGROUND

[0002] Mobile refrigeration equipment, such as a vehicle-mounted refrigerator, often needs to be used on the move. The use scene of the compressor in these devices is more variable than that of a household compressor, which changes from static to mobile, which also puts higher requirements on the reliability of the compressor.

[0003] In current compressors, a limiting block is generally arranged on the cylinder body of the crankcase of the pump body to position the upper end of the pump body and the periphery in cooperation with the top and periphery of the shell. However, this structure, when moving, such as sudden stopping or passing through a deceleration zone of a vehicle, can cause the pump body to still produce an impact in a certain direction when released due to damping support, and cause a collision with the shell. Unpleasant metal impact sound is produced; this process is easy to produce metal falling into the lubricating oil and entering the moving structure with the lubricating oil, thereby causing wear and tear, and further affecting the performance and service life of the compressor. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a reciprocating compressor and a refrigeration and heating device to solve the problem in the prior art that the reciprocating compressor uses a metal limiting block, which is easy to produce metal chips and metal impact sound when shaking, and the metal chips fall into the lubricating oil, causing wear and tear, affecting the operation of the pump body and the motor, and further affecting the service life of the compressor.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the embodiments of the present application is to provide a reciprocating compressor, comprising a shell, a pump body arranged in the shell, a motor driving the pump body, and an elastic support assembly elastically supporting the motor, the pump body being supported on the motor, and the elastic support assembly being supported in the shell, the reciprocating compressor further comprising a limiting structure mounted in the shell, the limiting structure being configured to:

[0006] limit the position of the pump body and the motor in the shell when the reciprocating compressor is shaking;

[0007] when the reciprocating compressor is stationary or vibrating, the limiting structure is arranged in a spaced manner with the inner surface of the shell.

[0008] In an optional embodiment, the pump body comprises a crankcase, a cylinder body arranged on the crankcase, a piston slidingly mounted in the cylinder body, a connecting rod driving the piston to reciprocate in the cylinder body, a crankshaft driving the connecting rod to move, and a suction and exhaust mechanism mounted on the cylinder body, the crankshaft penetrating through the crankcase and being connected with the motor;

[0009] The air intake and exhaust mechanism comprises a valve plate with air intake holes and exhaust holes, an air intake valve plate for opening and closing the air intake holes, an exhaust valve plate for opening and closing the exhaust holes, and a cylinder head covering the side of the valve plate away from the cylinder body.

[0010] In an alternative embodiment, the limiting structure comprises a first limiting block, the first limiting block comprises a main limiting block arranged on the upper end of the cylinder head away from the cylinder body, two limiting arms arranged on both ends of the main limiting block and extending towards the cylinder body, each limiting arm wraps around the corresponding corner of the cylinder head and the cylinder body, the side of the main limiting block away from the cylinder body forms a first limiting surface, the machine shell has a first limiting area adjacent to the first limiting surface, and the inner surface of the first limiting area is arranged in a spaced manner with the first limiting surface.

[0011] In an alternative embodiment, the top of the machine shell is recessed with two first limiting grooves, the two limiting arms are located between the two first limiting grooves, the side wall of each first limiting groove forms a limiting side wall near the corresponding limiting arm, and the side of each limiting arm adjacent to the corresponding limiting side wall forms a second limiting surface, and the inner surface of each limiting side wall is arranged in a spaced manner with the corresponding second limiting surface.

[0012] In an alternative embodiment, the top of the machine shell is recessed with a second limiting groove corresponding to the position of the main limiting block, the second limiting groove is located at the corresponding position between the two limiting arms, and the inner surface of the bottom of the second limiting groove is arranged in a spaced manner with the top surface of the main limiting block.

[0013] In an alternative embodiment, each corner of the cylinder head is provided with a first mounting hole, the valve plate is provided with a first through hole corresponding to the position of each first mounting hole, the cylinder body is provided with a second mounting hole corresponding to the position of each first mounting hole, and the air intake and exhaust mechanism further comprises a first screw installed in the corresponding second mounting hole in sequence through the corresponding first mounting hole and the first through hole.

[0014] The two ends of the main limiting block are respectively provided with through holes for the first screw to pass through, and / or each limiting arm is provided with a support plate at one end close to the cylinder body, each support plate is provided with a protruding point, and the protruding point is inserted into one end of the second mounting hole away from the cylinder head.

[0015] In an alternative embodiment, the air intake and exhaust mechanism further comprises a valve plate support plate supporting the air intake valve plate, the valve plate support plate is arranged between the valve plate and the cylinder body, the valve plate support plate is provided with an air intake opening accommodating the air intake valve plate, and the valve plate support plate is provided with an exhaust opening corresponding to the position of the exhaust hole, and the exhaust opening is in communication with the air intake opening.

[0016] In an optional embodiment, the pump body comprises a crankcase, a cylinder body arranged on the crankcase, a piston slidingly arranged in the cylinder body, a connecting rod driving the piston to reciprocate in the cylinder body, a crankshaft driving the connecting rod to move, and a suction and exhaust mechanism arranged on the cylinder body, the crankshaft being connected with the motor through the crankcase;

[0017] The cylinder body is located on one side of the motor, and the crankcase is away from the cylinder body, and each end of the crankcase is provided with a connecting portion; the limiting structure comprises a second limiting block arranged on each connecting portion, each second limiting block comprises a limiting piece arranged on the upper surface of the corresponding connecting portion, and the top of the shell is recessed with a third limiting groove corresponding to the position of each limiting piece, and the inner surface of the bottom of each third limiting groove is spaced apart from the top surface of the corresponding limiting piece.

[0018] In an optional embodiment, the limiting piece is provided with two limiting side blocks extending to the adjacent two side surfaces of the corresponding connecting portion, each limiting side block forms a third limiting surface away from the side surface of the corresponding connecting portion, and the third limiting surface is spaced apart from the inner surface of the shell.

[0019] In an optional embodiment, the elastic supporting assembly comprises a supporting seat arranged on the bottom of the shell, a spring arranged on the supporting seat, and a second screw connecting the motor and the crankcase, the lower end of the second screw being connected with the spring, the motor being provided with a through hole for the second screw to pass through, the crankcase being provided with a connecting hole corresponding to the position of the through hole and matched with the second screw, each connecting portion being provided with the connecting hole, and the limiting piece being provided with a positioning column matched with the connecting hole.

[0020] In an optional embodiment, the limiting structure comprises a third limiting block wrapping each corner of the lower end of the motor, the third limiting block forming a fourth limiting surface away from the side surface of the motor, and the fourth limiting surface being spaced apart from the inner surface of the shell.

[0021] In an optional embodiment, the minimum distance between the limiting structure and the inner surface of the shell ranges from 2.5mm to 3mm.

[0022] Another purpose of the embodiments of the present application is to provide a refrigeration and heating equipment comprising the compressor as described in the above embodiments.

[0023] The beneficial effects of the reciprocating compressor provided in this application embodiment are as follows: Compared with the prior art, the reciprocating compressor in this application embodiment has a limiting structure in the casing. The limiting structure limits the position of the pump body and motor in the casing. When the reciprocating compressor shakes significantly, it can limit the amplitude of the shaking of the pump body and motor in the casing, reducing the metallic impact sound. Furthermore, by setting the limiting structure at a distance from the inner surface of the casing, when the reciprocating compressor vibrates slightly, it can reduce the transmission of the casing vibration to the pump body and motor, thereby ensuring that the pump body and motor work normally and stably during normal movement, avoiding or reducing the generation of metal shavings, and thus ensuring the service life of the reciprocating compressor.

[0024] The beneficial effects of the refrigeration and heating equipment provided in this application embodiment are as follows: Compared with the prior art, the refrigeration and heating equipment in this application embodiment uses the reciprocating compressor of the above embodiment, and has the technical effects of the above reciprocating compressor, which will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A top view of the reciprocating compressor provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the reciprocating compressor after removing the upper housing, as provided in an embodiment of this application.

[0028] Figure 3 This is a cross-sectional view of the reciprocating compressor after removing the upper housing, as provided in an embodiment of this application.

[0029] Figure 4 Exploded view of the reciprocating compressor provided in the embodiments of this application Figure 1 ;

[0030] Figure 5 for Figure 4 Enlarged structural diagram of the mid-intake exhaust mechanism;

[0031] Figure 6 for Figure 4 Schematic diagram of the upper and middle shell structure;

[0032] Figure 7 Exploded view of the reciprocating compressor provided in the embodiments of this application Figure 2 ;

[0033] Figure 8 For Figure 7 Enlarged structural schematic view of the suction and exhaust mechanism;

[0034] Figure 9 For Figure 7 Enlarged structural schematic view of part of the crankcase;

[0035] Figure 10 For Figure 7 Enlarged structural schematic view of the stator part.

[0036] In the drawings, the main reference signs are:

[0037] 100 - reciprocating compressor;

[0038] 10 - casing; 11 - upper casing body; 111 - first limiting area; 112 - first limiting groove; 1121 - limiting side wall; 113 - second limiting groove; 114 - third limiting groove; 12 - lower casing body; 121 - oil groove; 13 - support;

[0039] 20 - motor; 21 - stator; 211 - through hole; 22 - rotor;

[0040] 30 - pump body; 31 - crankcase; 311 - high-pressure sound attenuation cavity; 312 - connecting part; 313 - mounting seat; 314 - connecting hole; 315 - exhaust pipe; 32 - cylinder body; 321 - inner cavity; 322 - second mounting hole; 323 - first communication hole; 33 - crankshaft; 331 - oil suction cavity; 332 - oil pumping channel; 34 - piston; 35 - connecting rod; 36 - pin shaft; 37 - screw pump; 38 - clasp spring;

[0041] 40 - suction and exhaust mechanism; 41 - valve plate; 411 - suction hole; 412 - exhaust hole; 413 - first through hole; 414 - second communication hole; 42 - suction valve piece; 43 - exhaust valve piece; 44 - cylinder head; 441 - high-pressure cavity; 442 - accommodating slot; 443 - first mounting hole; 45 - valve piece support plate; 451 - suction opening; 452 - exhaust opening; 453 - second through hole; 454 - third communication hole; 46 - first gasket; 461 - air passage opening; 462 - third through hole; 463 - fourth communication hole; 47 - second gasket; 471 - suction through hole; 472 - air passage opening; 473 - fourth through hole; 48 - suction sound attenuation cavity; 481 - outlet end; 49 - first screw;

[0042] 50 - elastic support assembly; 51 - support seat; 52 - spring; 53 - second screw;

[0043] 60 - limit structure; 61 - first limit block; 611 - main limit block; 6111 - first limit surface; 6112 - through hole; 612 - limit arm; 6121 - second limit surface; 613 - support plate; 614 - protrusion; 62 - second limit block; 621 - limit piece; 622 - limit side block; 6221 - third limit surface; 623 - positioning column; 63 - third limit block; 631 - fourth limit surface. DETAILED DESCRIPTION

[0044] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not intended to limit the present application.

[0045] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0046] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited. The meaning of "several" is one or more, unless otherwise explicitly and specifically limited. The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. The orientations or positional relationships indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Reference to "one embodiment", "some embodiments", "an embodiment" or "embodiments" in the present application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments" and so on in various places in the specification are not necessarily all referring to the same embodiment, although the phrases can be. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0049] Please refer to Figures 1 to 4 The reciprocating compressor 100 provided by the present application will be described. The reciprocating compressor 100 comprises a casing 10, a pump body 30, a motor 20, an elastic supporting assembly 50 and a limiting structure 60; wherein:

[0050] The casing 10 plays a main supporting and protecting role, the pump body 30, the motor 20, the elastic supporting assembly 50 and the limiting structure 60 are all installed in the casing 10, and the pump body 30, the motor 20, the elastic supporting assembly 50 and the limiting structure 60 are supported and protected by the casing 10.

[0051] The pump body 30 is connected with the motor 20, so as to drive the pump body 30 to work by the motor 20. The pump body 30 is installed on the motor 20, and the pump body 30 is supported by the motor 20, and then the pump body 30 is supported in the casing 10.

[0052] The elastic supporting assembly 50 is supported in the casing 10, and the motor 20 is installed on the elastic supporting assembly 50, so as to elastically support the motor 20. Since the pump body 30 is supported on the motor 20, the elastic supporting assembly 50 elastically supports the pump body 30 and the motor 20 in the casing 10, and then plays an elastic buffering role on the pump body 30 and the motor 20. When the casing 10 vibrates, the influence of the vibration of the casing 10 on the pump body 30 and the motor 20 can be reduced.

[0053] The limiting structure 60 is configured to limit the positions of the pump body 30 and the motor 20 in the casing 10 when the reciprocating compressor 100 shakes. That is, when the reciprocating compressor 100 shakes, the limiting structure 60 can limit the positions of the pump body 30 and the motor 20 in the casing 10, so as to limit the shaking amplitude of the pump body 30 and the motor 20 in the casing 10, to avoid that the pump body 30 and the motor 20 produce large shaking in the casing 10, and then the pump body 30 and the motor 20 can still work when the reciprocating compressor 100 shakes, and then the reciprocating compressor 100 can keep working.

[0054] When the reciprocating compressor 100 is stationary or vibrates, the limiting structure 60 is spaced apart from the inner surface of the shell 10, so that the vibration of the shell 10 does not transmit to the limiting structure 60 when the shell 10 vibrates, thereby avoiding transmitting to the pump body 30 and the motor 20, to ensure that the pump body 30 and the motor 20 operate smoothly, avoid or reduce metal chips, and improve the service life of the reciprocating compressor 100.

[0055] It should be noted that the above-mentioned shaking of the reciprocating compressor 100 refers to that the equipment using the reciprocating compressor 100 shakes left and right or up and down with a large amplitude, which causes the reciprocating compressor 100 to shake left and right or up and down, that is, the reciprocating compressor 100 vibrates with a large amplitude. The above-mentioned stationary of the reciprocating compressor 100 refers to that the reciprocating compressor 100 is in a stationary state. The above-mentioned vibration of the reciprocating compressor 100 refers to that the equipment using the reciprocating compressor 100 vibrates when it operates normally, which drives the reciprocating compressor 100 to vibrate, that is, the reciprocating compressor 100 vibrates with a small amplitude. When the vibration amplitude of the reciprocating compressor 100 is greater than 2.5 mm, it is generally considered that the vibration amplitude is large, that is, the reciprocating compressor 100 shakes as mentioned above; and when the vibration amplitude of the reciprocating compressor 100 is less than 2.5 mm, it is generally considered that the vibration amplitude is small, that is, the reciprocating compressor 100 vibrates as mentioned above.

[0056] Compared with the prior art, the reciprocating compressor 100 provided by the embodiment of the present application has the limiting structure 60 arranged in the shell 10, which limits the positions of the pump body 30 and the motor 20 in the shell 10. When the reciprocating compressor 100 shakes greatly, the amplitude of the shaking of the pump body 30 and the motor 20 in the shell 10 can be limited, and the metal impact sound can be reduced. The limiting structure 60 is spaced apart from the inner surface of the shell 10, so that when the reciprocating compressor 100 vibrates slightly, the vibration of the shell 10 can be reduced to transmit to the pump body 30 and the motor 20, to ensure that the pump body 30 and the motor 20 work normally and stably when moving normally, avoid or reduce metal chips, and thereby ensure the service life of the reciprocating compressor 100.

[0057] In one embodiment, the minimum distance between the limiting structure 60 and the inner surface of the shell 10 is 2.5-3 mm, to limit the amplitude of the shaking of the pump body 30 and the motor 20 in the shell 10, and to avoid the pump body 30 and the motor 20 from shaking too much, thereby providing good protection for the pump body 30 and the motor 20.

[0058] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 7, the pump body 30 comprises a crankcase 31, a cylinder body 32, a piston 34, a connecting rod 35, a crankshaft 33 and a suction and exhaust mechanism 40, the cylinder body 32 is arranged on the crankcase 31. The suction and exhaust mechanism 40 is arranged on the cylinder body 32, the piston 34 is slidingly arranged in the inner cavity 321 of the cylinder body 32, one end of the connecting rod 35 is connected with the piston 34, the other end of the connecting rod 35 is connected with the crankshaft 33, the crankshaft 33 is rotatably arranged on the crankcase 31, and the crankshaft 33 is connected with the motor 20 through the crankcase 31. Thus, the motor 20 rotates to drive the crankshaft 33 to rotate, and then the connecting rod 35 drives the piston 34 to reciprocate in the cylinder body 32 to compress the gas.

[0059] In one embodiment, the connecting rod 35 can be hinged with the piston 34 through a pin shaft 36, so that the connecting rod 35 drives the piston 34 to reciprocate.

[0060] In one embodiment, the crankcase 31 and the cylinder body 32 are integrally formed to ensure the strength of the connection between the crankcase 31 and the cylinder body 32. It can be understood that the crankcase 31 and the cylinder body 32 can also be separately manufactured, and then the cylinder body 32 is fixed on the crankcase 31.

[0061] In one embodiment, referring to Figure 5 and Figure 8 , the suction and exhaust mechanism 40 comprises a valve plate 41, a suction valve plate 42, an exhaust valve plate 43 and a cylinder head 44, the valve plate 41 is arranged on the cylinder body 32, and the cylinder head 44 covers the side of the valve plate 41 away from the cylinder body 32. The valve plate 41 is provided with a suction hole 411 and an exhaust hole 412, the suction valve plate 42 is used to open and close the suction hole 411, and the exhaust valve plate 43 is used to open and close the exhaust hole 412. Thus, during suction, the suction valve plate 42 opens the suction hole 411, and the exhaust valve plate 43 closes the exhaust hole 412, so that the cylinder body 32 sucks in gas; and during exhaust, the suction valve plate 42 closes the suction hole 411, and the exhaust valve plate 43 opens the exhaust hole 412, so that the high-pressure gas in the cylinder body 32 is exhausted.

[0062] In one embodiment, the suction and exhaust mechanism 40 further comprises a first screw 49, the first screw 49 is used to arrange the cylinder head 44 and the valve plate 41 on the cylinder body 32. Specifically, each corner of the cylinder head 44 is provided with a first mounting hole 443, the valve plate 41 is provided with a first through hole 413 corresponding to the position of each first mounting hole 443, and the cylinder body 32 is provided with a second mounting hole 322 corresponding to the position of each first mounting hole 443, each first screw 49 is arranged in the corresponding second mounting hole 322 in sequence through the corresponding first mounting hole 443 and the first through hole 413, so as to arrange the cylinder head 44 and the valve plate 41 on the cylinder body 32. The first screw 49 is used to connect the cylinder body 32, the valve plate 41 and the cylinder head 44, and the connection is stable.

[0063] In one embodiment, the suction and discharge mechanism 40 further comprises a valve plate support plate 45, which is arranged between the valve plate 41 and the cylinder body 32, and the valve plate support plate 45 is provided with a suction opening 451 and a discharge opening 452, the suction opening 451 covers the suction hole 411 on the valve plate 41, and the discharge opening 452 corresponds to the position of the discharge hole 412 on the valve plate 41, so that the discharge opening 452 communicates with the discharge hole 412 after assembly.

[0064] The suction valve plate 42 is installed in the suction opening 451, and the suction valve plate 42 is connected with the valve plate support plate 45 to support the suction valve plate 42 through the valve plate support plate 45. The suction valve plate 42 can be welded on the suction valve plate 42. Of course, the suction valve plate 42 can also be fixed on the suction valve plate 42 by riveting or other methods. It can be understood that the suction valve plate 42 can also be directly fixed on the valve plate 41.

[0065] The discharge opening 452 communicates with the suction opening 451, so that the suction opening 451 can be set larger, and the processing and manufacturing can be facilitated, such as a larger opening can be made on the valve plate support plate 45 to form the discharge opening 452 and the suction opening 451, which is convenient for manufacturing and can improve the integration and make the valve plate support plate 45 smaller, so as to make the pump body 30 smaller, and accordingly, the volume of the reciprocating compressor 100 can be made smaller.

[0066] In one embodiment, when the suction and discharge mechanism 40 comprises the first screw 49, the valve plate support plate 45 is provided with a second through hole 453 for the first screw 49 to pass through, so as to facilitate assembly.

[0067] In one embodiment, the suction and discharge mechanism 40 further comprises a first gasket 46, which is arranged between the valve plate support plate 45 and the cylinder body 32 to improve the sealing effect. The first gasket 46 is provided with a ventilation opening 461 corresponding to the position of the inner cavity 321 of the cylinder body 32, so as to facilitate the suction and discharge of air. It can be understood that when the valve plate support plate 45 is not arranged, the first gasket 46 can be directly arranged between the valve plate 41 and the cylinder body 32.

[0068] In one embodiment, when the suction and discharge mechanism 40 comprises the first screw 49, the first gasket 46 is provided with a third through hole 462 for the first screw 49 to pass through, so as to facilitate assembly.

[0069] In one embodiment, the suction and discharge mechanism 40 further comprises a second gasket 47, which is arranged between the valve plate 41 and the cylinder head 44 to improve the sealing effect between the valve plate 41 and the cylinder head 44.

[0070] In one embodiment, the air suction and exhaust mechanism 40 includes the first screw 49, and the second gasket 47 is provided with a fourth through hole 473 for the first screw 49 to pass through, so as to facilitate assembly.

[0071] In one embodiment, the cylinder head 44 is provided with a high-pressure cavity 441, which is in communication with the exhaust hole 412, so that the high-pressure gas discharged from the exhaust hole 412 can enter the high-pressure cavity 441. The high-pressure cavity 441 can play a certain sound-damping role.

[0072] In one embodiment, when the air suction and exhaust mechanism 40 includes the second gasket 47, the second gasket 47 is provided with an air passage opening 472 corresponding to the position of the high-pressure cavity 441, so that the high-pressure gas discharged from the exhaust hole 412 can enter the high-pressure cavity 441.

[0073] In one embodiment, the air suction and exhaust mechanism 40 further includes an air suction sound-damping cavity 48, and the outlet end 481 of the air suction sound-damping cavity 48 is in communication with the air suction hole 411 on the valve plate 41, so as to dampen the air suction of the cylinder body 32.

[0074] In one embodiment, the cylinder head 44 is provided with a receiving slot 442, and the outlet end 481 of the air suction sound-damping cavity 48 is placed in the receiving slot 442, so as to mount and fix the air suction sound-damping cavity 48.

[0075] In the above embodiment, when the air suction and exhaust mechanism 40 includes the second gasket 47, the second gasket 47 is arranged between the valve plate 41 and the outlet end 481 of the air suction sound-damping cavity 48, and the second gasket 47 is provided with an air suction through hole 471 corresponding to the position of the air suction hole 411, so that the outlet end 481 of the air suction sound-damping cavity 48 is in communication with the air suction hole 411 on the valve plate 41 through the air suction through hole 471.

[0076] In one embodiment, referring to Figure 5 , Figure 7 and Figure 8 , the crankcase 31 is provided with a high-pressure sound-damping cavity 311, the cylinder body 32 is provided with a first communication hole 323 in communication with the high-pressure sound-damping cavity 311, the valve plate 41 is provided with a second communication hole 414 corresponding to the first communication hole 323, and the second communication hole 414 is in communication with the high-pressure cavity 441 on the cylinder head 44, so that the high-pressure gas in the high-pressure cavity 441 can be discharged to the high-pressure sound-damping cavity 311.

[0077] In one embodiment, the high-pressure sound-damping cavity 311 is connected with an exhaust pipe 315, so as to facilitate exhaust.

[0078] In one embodiment, when the air suction and exhaust mechanism 40 includes the valve plate support plate 45, the valve plate support plate 45 is provided with a third communication hole 454 corresponding to the position of the first communication hole 323.

[0079] In one embodiment, when the air suction and exhaust mechanism 40 includes the first gasket 46, a fourth communication hole 463 is formed in the first gasket 46 at a position corresponding to the first communication hole 323.

[0080] In one embodiment, referring to Figures 4 to 8 The limiting structure 60 includes a first limiting block 61, which includes a main limiting block 611 and two limiting arms 612 located at two ends of the main limiting block 611. The main limiting block 611 is arranged on the upper end of the cylinder head 44 away from the cylinder block 32 to protect the upper end of the cylinder head 44 away from the cylinder block 32. The two limiting arms 612 are arranged by extending from the two ends of the main limiting block 611 towards the cylinder block 32, so that during assembly, each limiting arm 612 wraps around the corresponding corner of the cylinder head 44 and the cylinder block 32, thereby protecting the two corners of the upper end of the cylinder head 44 and the cylinder block 32 and the side of the upper end of the cylinder head 44 away from the cylinder block 32 through the first limiting block 61.

[0081] In one embodiment, a first limiting surface 6111 is formed on the side of the main limiting block 611 away from the cylinder block 32, and the casing 10 has a first limiting area 111, which is the area of the casing 10 adjacent to the first limiting surface 6111. The inner surface of the first limiting area 111 is arranged spaced apart from the first limiting surface 6111, so that the first limiting area 111 limits the amplitude of movement of the first limiting surface 6111 towards the first limiting area 111, and the first limiting area 111 and the first limiting surface 6111 cooperate to limit the amplitude of the pump body 30 shaking towards the side of the cylinder head 44. In addition, the inner surface of the first limiting area 111 is arranged spaced apart from the first limiting surface 6111, which can avoid the vibration of the casing 10 being transmitted from the first limiting area 111 to the first limiting surface 6111, and further avoid the vibration of the casing 10 being transmitted from the first limiting area 111 to the pump body 30.

[0082] In one embodiment, the minimum distance between the inner surface of the first limiting area 111 and the first limiting surface 6111 is 2.5mm to 3mm, which limits the amplitude of the pump body 30 shaking towards the side of the cylinder head 44, avoids the pump body 30 shaking too much towards the side of the cylinder head 44, and protects the pump body 30.

[0083] In one embodiment, the top of the casing 10 is concavely provided with two first limiting grooves 112, and the two limiting arms 612 are located between the two first limiting grooves 112. Each first limiting groove 112 is formed with a limiting side wall 1121 close to the side wall of the corresponding limiting arm 612, each limiting arm 612 is formed with a second limiting surface 6121 adjacent to the corresponding limiting side wall 1121, and the inner surface of each limiting side wall 1121 is spaced apart from the corresponding second limiting surface 6121. In this way, the movement range of the second limiting surface 6121 towards the corresponding limiting side wall 1121 can be limited by the limiting side wall 1121 of the two first limiting grooves 112, and the movement range of the pump body 30 along the vertical cylinder body 32 can be limited by the cooperation between the two limiting side walls 1121 and the corresponding second limiting surface 6121.

[0084] In addition, the inner surface of each limiting side wall 1121 is spaced apart from the corresponding second limiting surface 6121, which can avoid the vibration of the casing 10 being conducted from the limiting side wall 1121 to the second limiting surface 6121, and further avoid the vibration of the casing 10 being conducted from the limiting side wall 1121 to the pump body 30.

[0085] In one embodiment, the minimum distance between the inner surface of each limiting side wall 1121 and the corresponding second limiting surface 6121 is in the range of 2.5mm to 3mm, which can limit the movement range of the pump body 30 along the vertical cylinder body 32, avoid the pump body 30 moving along the vertical cylinder body 32 too much, and protect the pump body 30.

[0086] In one embodiment, as shown in Figure 6 the top of the casing 10 is concavely provided with a second limiting groove 113, the second limiting groove 113 is located at the corresponding position of the main limiting block 611, and the second limiting groove 113 is located at the corresponding position between the two limiting arms 612. The inner surface of the bottom of the second limiting groove 113 is spaced apart from the top surface of the main limiting block 611. In this way, the movement range of the main limiting block 611 upwards can be limited by the bottom of the second limiting groove 113, and the movement range of the pump body 30 up and down can be limited by the cooperation between the bottom of the second limiting groove 113 and the top surface of the main limiting block 611.

[0087] In addition, the inner surface of the bottom of the second limiting groove 113 is spaced apart from the top surface of the main limiting block 611, which can avoid the vibration of the casing 10 being conducted from the bottom of the second limiting groove 113 to the main limiting block 611, and further avoid the vibration of the casing 10 being conducted from the bottom of the second limiting groove 113 to the pump body 30.

[0088] In one embodiment, the minimum distance between the inner surface of the bottom of the second limiting groove 113 and the top surface of the main limiting block 611 is in the range of 2.5mm to 3mm, which can limit the movement range of the pump body 30 up and down, avoid the pump body 30 moving up and down too much, and protect the pump body 30.

[0089] In one embodiment, as shown in Figure 4 the two ends of the main limiting block 611 are respectively provided with through holes 6112, and in assembly, the first screw 49 can pass through the through hole 6112 on the main limiting block 611 to facilitate the mounting and fixing of the main limiting block 611 by the first screw 49. Of course, the main limiting block 611 can also be wrapped on the first screw 49 without the through hole 6112.

[0090] In one embodiment, as shown in Figure 4 each limiting arm 612 is provided with a support plate 613 near one end of the cylinder body 32, and each support plate 613 is provided with a protrusion 614 which is inserted into the second mounting hole 322 adjacent to the end of the cylinder head 44 away from the cylinder head 44. This structure can position and connect each limiting arm 612 with the cylinder body 32, and then cooperate with the main limiting block 611 to be mounted on the pump body 30, which is convenient for assembly.

[0091] In one embodiment, the first limiting block 61 is made of a material with elasticity, such as rubber, silicone or the like. It not only plays a limiting role, but also has a good protective effect. When the first limiting block 61 contacts the shell 10, it can play a role of elastic buffer and shock absorption to better protect the pump body 30.

[0092] In one embodiment, as shown in Figures 7 to 9 the cylinder body 32 is located on one side of the motor 20, and the two ends of the crankcase 31 away from the cylinder body 32 are respectively provided with connecting portions 312. The limiting structure 60 includes two second limiting blocks 62, and the two second limiting blocks 62 are respectively mounted on the two connecting portions 312 to protect the two connecting portions 312 and ensure the crankcase 31.

[0093] In one embodiment, when the limiting structure 60 includes the first limiting block 61, the first limiting block 61 and the second limiting block 62 are respectively located on opposite sides of the crankcase 31.

[0094] In one embodiment, as shown in Figure 9 each second limiting block 62 includes a limiting piece 621 which is mounted on the upper surface of the connecting portion 312, and the top of the shell 10 is recessed with two third limiting grooves 114 which correspond to the second limiting blocks 62 one by one. The inner surface of the bottom of each third limiting groove 114 is spaced apart from the top surface of the corresponding limiting piece 621, so that the bottom of the third limiting groove 114 can limit the amplitude of the upward movement of the corresponding limiting piece 621, and then the bottom of the third limiting groove 114 and the top surface of the corresponding limiting piece 621 can cooperate to limit the amplitude of the up and down movement of the pump body 30.

[0095] In addition, the inner surface of the bottom of the third limiting groove 114 is spaced apart from the top surface of the corresponding limiting member 621, so that vibration of the casing 10 is prevented from being conducted from the bottom of the third limiting groove 114 to the corresponding limiting member 621, and further, vibration of the casing 10 is prevented from being conducted from the bottom of the third limiting groove 114 to the pump body 30.

[0096] In one embodiment, the limiting structure 60 includes the first limiting block 61 and the second limiting block 62, and the top of the casing 10 is provided with the second limiting groove 113 and the third limiting groove 114, so that the amplitude of the up-and-down swing of one side of the pump body 30 is limited by the cooperation between the bottom of the second limiting groove 113 and the top surface of the main limiting block 611, and the amplitude of the up-and-down swing of the other side of the pump body 30 is limited by the cooperation between the bottom of the third limiting groove 114 and the top surface of the corresponding limiting member 621.

[0097] In one embodiment, the minimum distance between the inner surface of the bottom of the third limiting groove 114 and the top surface of the corresponding limiting member 621 is 2.5mm to 3mm, so as to limit the amplitude of the up-and-down swing of the pump body 30, and prevent the pump body 30 from swinging too much, thereby protecting the pump body 30.

[0098] In one embodiment, the limiting member 621 can be provided in the form of a flat plate. Of course, the limiting member 621 can also be provided in the form of a block and the like.

[0099] In one embodiment, as shown in Figure 9 each second limiting block 62 further includes two limiting side blocks 622, each of which is downwardly extended from the edge of the limiting member 621, and the two limiting side blocks 622 are respectively located on the adjacent two side surfaces of the corresponding connecting portion 312, so that the adjacent two side surfaces of the connecting portion 312 can be protected by the two limiting side blocks 622.

[0100] The side of each limiting side block 622 away from the corresponding connecting portion 312 forms a third limiting surface 6221, and the third limiting surface 6221 is spaced apart from the inner surface of the casing 10, so that the region of the inner surface of the casing 10 adjacent to the third limiting surface 6221 can limit the swing of the corresponding limiting side block 622 toward the side away from the cylinder body 32, and further, the amplitude of the swing of the pump body 30 toward the side away from the cylinder body 32 can be limited by the cooperation between the third limiting surface 6221 and the inner surface of the casing 10.

[0101] In addition, the third limiting surface 6221 is spaced apart from the inner surface of the casing 10, so that vibration of the casing 10 is prevented from being conducted from the casing 10 to the corresponding third limiting surface 6221, and further, vibration of the casing 10 is prevented from being conducted from the third limiting surface 6221 to the pump body 30.

[0102] In one embodiment, the minimum distance between the third limiting surface 6221 and the inner surface of the casing 10 is 2.5mm to 3mm, so as to limit the swing of the pump body 30 towards the side away from the cylinder body 32, and avoid the pump body 30 swinging too much towards the side away from the cylinder body 32, thereby protecting the pump body 30.

[0103] In one embodiment, referring to Figure 4 、 Figure 7 and Figure 9 , the elastic supporting assembly 50 comprises a supporting seat 51, a spring 52 and a second screw 53. The supporting seat 51 is installed at the bottom of the casing 10, the spring 52 is installed on the supporting seat 51 to support the spring 52 through the supporting seat 51. The second screw 53 connects the motor 20 and the crankcase 31, and the lower end of the second screw 53 is connected with the spring 52 to elastically support the second screw 53 through the spring 52, thereby elastically supporting the motor 20 and the crankcase 31. The motor 20 is provided with a through hole 211 for the second screw 53 to pass through, and the crankcase 31 is provided with a connecting hole 314 corresponding to the position of the through hole 211, so that the second screw 53 passes through the through hole 211 and is installed in the connecting hole 314 to fix and connect the motor 20 and the crankcase 31. It can be understood that the elastic supporting assembly 50 can also adopt a structure such as an elastic telescopic rod, and the motor 20 is directly fixed on the elastic supporting assembly 50, and the crankcase 31 is fixed on the motor 20.

[0104] In one embodiment, each connecting portion 312 is provided with a connecting hole 314, and the limiting piece 621 is provided with a positioning column 623 which is inserted into the corresponding connecting hole 314 in cooperation, so as to facilitate the installation of the limiting piece 621.

[0105] In one embodiment, the supporting seat 51 can be a bushing. Of course, the supporting seat 51 can also be other structures, such as a threaded seat and the like.

[0106] In one embodiment, the second limiting block 62 is made of a material with elasticity, such as rubber, silica gel and the like, which can play a good protection role while playing a limiting role, and when the second limiting block 62 contacts the casing 10, it can play a role of elastic buffering and shock absorption, so as to better protect the pump body 30.

[0107] In one embodiment, the elastic supporting assembly 50 is multiple sets to support the motor 20 and the pump body 30, and the support is more stable.

[0108] In one embodiment, the crankcase 31 is provided with a plurality of mounting seats 313 corresponding to the positions of the motor 20, and each mounting seat 313 is supported on the motor 20 to stably support the crankcase 31 on the motor 20. The mounting seat 313 is provided on each connecting portion 312, and a connecting hole 314 is provided in each mounting seat 313 to connect with the second screw 53 of the elastic supporting assembly 50.

[0109] In one embodiment, referring to Figure 4 , Figure 7 , Figure 9 and Figure 10 , the limiting structure 60 includes a plurality of third limiting blocks 63, which wrap around the corners of the lower end of the motor 20 to protect the lower end of the motor 20. The side surface of the third limiting block 63 away from the side surface of the motor 20 forms a fourth limiting surface 631, which is spaced apart from the inner surface of the casing 10. Thus, the corresponding third limiting block 63 can be limited to sway towards the axial side of the motor 20 through the area on the inner surface of the casing 10 adjacent to the fourth limiting surface 631, and the motor 20 can be limited to sway towards the axial side of the motor 20 through the cooperation of the fourth limiting surface 631 and the inner surface of the casing 10.

[0110] In addition, the fourth limiting surface 631 is spaced apart from the inner surface of the casing 10, which can avoid the vibration of the casing 10 being conducted from the casing 10 to the corresponding fourth limiting surface 631, and further avoid the vibration of the casing 10 being conducted from the fourth limiting surface 631 to the motor 20.

[0111] In one embodiment, the minimum distance between the fourth limiting surface 631 and the inner surface of the casing 10 is 2.5mm to 3mm, which can limit the amplitude of the pump body 30 towards the side of the cylinder body 32, and avoid the pump body 30 from swaying too much to protect the pump body 30.

[0112] In one embodiment, the third limiting block 63 is made of a material with elasticity, such as rubber, silicone or the like, which can play a good protection role while limiting the position, and can also play a role of elastic buffering and shock absorption when the third limiting block 63 contacts the casing 10 to better protect the motor 20.

[0113] In one embodiment, referring to Figure 3 , Figure 4 and Figure 7 , the casing 10 includes an upper casing 11 and a lower casing 12, and the upper casing 11 and the lower casing 12 are welded to form a sealed cavity for installing the pump body 30 and the motor 20. The first limiting groove 112, the second limiting groove 113 and the third limiting groove 114 are provided on the upper casing 11.

[0114] In one embodiment, the bottom of the casing 10 is provided with a support 13 to support the casing 10.

[0115] In one embodiment, the bottom of the casing 10 is provided with an oil groove 121, and the lower end of the crankshaft 33 extends into the oil groove 121, and the crankshaft 33 is provided with an oil suction cavity 331 and an oil pumping channel 332 to pump the lubricating oil in the oil groove 121 to the connecting rod 35 to improve the lubricating capacity.

[0116] In one embodiment, a screw pump 37 is installed in the oil suction cavity 331, and the lower end of the screw pump 37 is fixed in the casing 10 by a snap spring 38 to improve the oil pumping capacity and further improve the lubricating capacity.

[0117] In one embodiment, please refer to Figure 4 、 Figure 7 and Figure 10 , the motor 20 includes a stator 21 and a rotor 22, the rotor 22 is arranged in the stator 21, and the crankshaft 33 is connected with the rotor 22 to drive the rotor 22 to rotate through the stator 21, and further drive the crankshaft 33 to rotate. The above-mentioned through hole 211 is arranged on the stator 21. The above-mentioned third limiting block 63 is arranged on the stator 21.

[0118] The reciprocating compressor 100 of the embodiment has small volume, high reliability, stable operation in mobile environment, long service life and low cost.

[0119] The embodiment of the present application further provides a refrigeration and heating device, please refer to Figure 1 , the refrigeration and heating device includes the reciprocating compressor 100 as described in any of the above embodiments. The refrigeration and heating device uses the reciprocating compressor 100 of the above-mentioned embodiment, has the technical effects of the reciprocating compressor 100 of the above-mentioned embodiment, which will not be repeated here.

[0120] The refrigeration and heating device of the embodiment of the present application can be a refrigeration-only device, such as a vehicle-mounted refrigerator, or a heating-only device, or a device that takes into account both refrigeration and heating.

[0121] The above-mentioned is only an optional embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reciprocating compressor, comprising a housing, a pump body disposed within the housing, a motor driving the pump body, and an elastic support assembly elastically supporting the motor, wherein the pump body is supported on the motor, and the elastic support assembly is supported within the housing, characterized in that: The reciprocating compressor further includes a limiting structure installed in the housing, the limiting structure being configured as follows: When the reciprocating compressor vibrates, the positions of the pump body and the motor within the housing are defined; When the reciprocating compressor is stationary or vibrating, the limiting structure is spaced apart from the inner surface of the casing. The pump body includes a crankcase, a cylinder block disposed on the crankcase, a piston slidably mounted in the cylinder block, a connecting rod that drives the piston to reciprocate within the cylinder block, a crankshaft that drives the connecting rod to move, and an intake and exhaust mechanism mounted on the cylinder block. The crankshaft passes through the crankcase and is connected to the motor. The intake and exhaust mechanism includes a valve plate having an intake port and an exhaust port, an intake valve plate for opening and closing the intake port, an exhaust valve plate for opening and closing the exhaust port, and a cylinder cover covering the side of the valve plate opposite to the cylinder body. The valve plate is mounted on the cylinder body. The limiting structure includes a first limiting block, which includes a main limiting block disposed on the upper end of the cylinder head away from the cylinder body, and two limiting arms extending from both ends of the main limiting block toward the cylinder body. Each limiting arm wraps around the corresponding corner of the cylinder head and the cylinder body. The side of the main limiting block away from the cylinder body forms a first limiting surface. The housing has a first limiting area adjacent to the first limiting surface, and the inner surface of the first limiting area is spaced apart from the first limiting surface. The top of the housing is recessed with two first limiting grooves, and two limiting arms are located between the two first limiting grooves. Each first limiting groove forms a limiting sidewall close to the sidewall of the corresponding limiting arm. Each limiting arm forms a second limiting surface adjacent to the sidewall of the corresponding limiting arm. The inner surface of each limiting sidewall is spaced apart from the corresponding second limiting surface.

2. The reciprocating compressor as described in claim 1, characterized in that: The top of the housing is recessed with a second limiting groove corresponding to the position of the main limiting block. The second limiting groove is located at the corresponding position between the two limiting arms, and the inner surface of the bottom of the second limiting groove is spaced apart from the top surface of the main limiting block.

3. The reciprocating compressor as described in claim 1, characterized in that: The cylinder head has a first mounting hole at each corner, the valve plate has a first through hole at the position corresponding to each of the first mounting holes, the cylinder block has a second mounting hole at the position corresponding to each of the first mounting holes, and the intake and exhaust mechanism also includes a first screw that passes through the corresponding first mounting hole and the first through hole and is installed in the corresponding second mounting hole. The main limiting block has through holes at both ends for the first screw to pass through, and / or, each limiting arm has a support plate at one end near the cylinder body, and each support plate has a protrusion, which is inserted into the end of the second mounting hole away from the cylinder head.

4. The reciprocating compressor as described in claim 1, characterized in that: The intake and exhaust mechanism further includes a valve plate support plate that supports the intake valve plate. The valve plate support plate is located between the valve plate and the cylinder. The valve plate support plate has an intake opening for accommodating the intake valve plate. The valve plate support plate has an exhaust opening at a position corresponding to the exhaust hole. The exhaust opening is connected to the intake opening.

5. The reciprocating compressor as described in claim 1, characterized in that: The cylinder block is located on one side of the motor, and the crankcase has connecting portions at both ends on the side away from the cylinder block; the limiting structure includes a second limiting block installed on each of the connecting portions, each second limiting block includes a limiting member disposed on the upper surface of the corresponding connecting portion, and the top of the housing is recessed with a third limiting groove corresponding to the position of each limiting member, and the inner surface of the bottom of each third limiting groove is spaced apart from the top surface of the corresponding limiting member.

6. The reciprocating compressor as described in claim 5, characterized in that: The limiting member is provided with two limiting side blocks extending to the adjacent two sides of the corresponding connecting part. Each limiting side block forms a third limiting surface away from the side of the corresponding connecting part. The third limiting surface is spaced apart from the inner surface of the housing.

7. The reciprocating compressor as described in claim 5, characterized in that: The elastic support assembly includes a support base installed at the bottom of the housing, a spring installed on the support base, and a second screw connecting the motor and the crankcase. The lower end of the second screw is connected to the spring. The motor has a through hole through which the second screw passes. The crankcase has a connecting hole corresponding to the position of the through hole to connect the second screw. Each of the connecting parts has the connecting hole. The limiting member has a positioning pin that is inserted into the connecting hole.

8. The reciprocating compressor as described in any one of claims 1-7, characterized in that: The limiting structure includes a third limiting block that wraps around each corner of the lower end of the motor. The side of the third limiting block away from the motor forms a fourth limiting surface, which is spaced apart from the inner surface of the housing.

9. The reciprocating compressor as described in any one of claims 1-7, characterized in that: The minimum distance between the limiting structure and the inner surface of the housing is 2.5mm-3mm.

10. A refrigeration and heating device, characterized in that: Including the reciprocating compressor as described in any one of claims 1-9.

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