CN216044296U

CN216044296U - Novel crankcase structure for refrigerator compressor

Info

Publication number: CN216044296U
Application number: CN202122171763.0U
Authority: CN
Inventors: 关晓杰
Original assignee: Jiaxing Lifeng Machinery Manufacturing Co ltd
Current assignee: Jiaxing Lifeng Machinery Manufacturing Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-03-15
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a novel crankcase structure for a refrigerator compressor, which relates to the technical field of refrigerator compressors and comprises two symmetrical box bodies with hollow structures, wherein cooling liquid is injected into an inner cavity of each box body, a crankshaft body is movably and penetratingly connected to the middle part of each box body, connecting plates are fixedly sleeved on the outer sides of the ends, close to each other, of the two crankshaft bodies, a bearing sleeve is arranged between one ends of the two connecting plates, a fixed shaft is movably inserted into the middle part of the bearing sleeve through a bearing, the two ends of the fixed shaft are respectively and fixedly and penetratingly connected with one ends of the two connecting plates, and an arc-shaped plate is fixedly connected between the two box bodies. According to the crankshaft cooling device, the cooling liquid is arranged in the inner cavity of the box body, so that the crankshaft body can be cooled, the lower end of the arc-shaped plate is provided with the arc-shaped ventilation cover, and the connecting plate, the bearing sleeve and the fixed shaft can be ensured to be in contact with the outside air, so that the crankshaft cooling device has a good cooling effect, and heat accumulation caused by long-time work is avoided.

Description

Novel crankcase structure for refrigerator compressor

Technical Field

The utility model relates to the technical field of refrigerator compressors, in particular to a novel crankcase structure for a refrigerator compressor.

Background

The compressor is the heart of the refrigeration system, it sucks the refrigerant gas of low-temperature low-pressure from the suction pipe, after driving the piston to compress it through the operation of the electrical machinery, discharge the refrigerant gas of high-temperature high-pressure to the air exhaust pipe, provide the power for refrigerating cycle, thus realize the compression → condense → expand → evaporate (absorb heat) refrigerating cycle, the crankcase is the heart of the compressor, the piston movement of the compressor needs to rely on the crankcase to provide the power.

But at present, the crankcase structure for refrigerator compressor, its inside bent axle during operation high-speed rotation can produce a large amount of heats, and these heats pile up and are difficult to in time give off in crankcase inside to lead to the bent axle high temperature, it is impaired easily after long-time the use, secondly, the bearing that cup joints on the bent axle is long-time work can't carry out the self-lubricating, influences the life of bearing easily. Therefore, it is necessary to provide a new crankcase structure for a refrigerator compressor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel crankcase structure for a refrigerator compressor, which aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel crankcase structure for refrigerator compressor, includes the box of two hollow structure and symmetry, the coolant liquid has been annotated to the inner chamber of box, the middle part activity through connection of box has bent axle body, two the one end outside that bent axle body is close to each other is all fixed the connecting plate that has cup jointed, two be provided with the bearing housing between the one end of connecting plate, the middle part of bearing housing is pegged graft through the bearing activity and is had the fixed axle, the both ends of fixed axle respectively with the fixed through connection of the one end of two connecting plates, two fixedly connected with arc between the box, the lower extreme of arc is provided with the ventilative cover of arc, the both ends of the ventilative cover of arc respectively with the both ends fixed connection of arc, arc and the ventilative cover of arc all with the marginal fixed connection of box.

Preferably, the middle part of the upper surface of the arc-shaped plate is fixedly connected with a piston cylinder, and an inner cavity of a ring formed by the arc-shaped plate and the arc-shaped ventilation cover is communicated with an inner cavity of the piston cylinder.

Preferably, a sealing piston matched with the piston cylinder is arranged in an inner cavity of the piston cylinder, a piston connecting rod is movably connected to the middle of the lower surface of the sealing piston through a pin shaft, and the lower end of the piston connecting rod is fixedly connected with the outer side wall of the bearing sleeve.

Preferably, the middle parts of the inner walls of the two sides of the box body are fixedly connected with hollow sleeves, and the hollow sleeves are movably sleeved on the outer side of the crankshaft body.

Preferably, the inner cavity of the hollow sleeve is fixedly provided with a positioning bearing, and the positioning bearing is fixedly sleeved on the outer side of the crankshaft body.

Preferably, the middle parts of the two side surfaces of the box body are fixedly connected with sealing shaft sleeves through bolts, the outer sides of the crankshaft body are movably sleeved with the sealing shaft sleeves, one ends of the sealing shaft sleeves are located in the inner cavities of the hollow sleeves and matched with the hollow sleeves, and rubber pads are connected to the inner side walls of the sealing shaft sleeves in an adhering mode.

Preferably, the both sides of arc all are provided with the coolant pipe, the both ends of coolant pipe respectively with the inner chamber intercommunication of two boxes, the middle part of coolant pipe is passed through the hose and is communicated with external circulating pump.

The utility model has the technical effects and advantages that:

1. according to the crankshaft cooling device, the cooling liquid is arranged in the inner cavity of the box body, so that the crankshaft body can be cooled, the lower end of the arc-shaped plate is provided with the arc-shaped ventilation cover, and the connecting plate, the bearing sleeve and the fixed shaft can be ensured to be in contact with the outside air, so that the crankshaft cooling device has a good cooling effect, and heat accumulation caused by long-time work is avoided;

2. according to the utility model, the inner walls of two sides of the box body are fixedly connected with the hollow sleeve, the inner cavity of the hollow sleeve is provided with the positioning bearing, two side surfaces of the box body are respectively attached with the oil sealing shaft sleeve, and the sealing shaft sleeves are used for sealing the joint of the box body and the crankshaft body, so that the leakage of cooling liquid is avoided, meanwhile, the positioning bearing can be infiltrated by the cooling liquid in the inner cavity of the box body, and the service life of the positioning bearing is further prolonged.

Drawings

Fig. 1 is a perspective view of the overall structure of the present invention.

Fig. 2 is a perspective view of the connection plate structure of the present invention.

Fig. 3 is a schematic perspective view of the structure of the arc-shaped ventilation cover of the utility model.

Fig. 4 is a schematic sectional exploded view of the case structure of the present invention.

In the figure: 1. a box body; 2. a crankshaft body; 3. a connecting plate; 4. a bearing housing; 5. a fixed shaft; 6. an arc-shaped plate; 7. an arc-shaped ventilation cover; 8. a piston cylinder; 9. a sealing piston; 10. a piston connecting rod; 11. a hollow sleeve; 12. positioning the bearing; 13. sealing the shaft sleeve; 14. a coolant tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a novel crankcase structure for a refrigerator compressor as shown in figures 1-4, which comprises two symmetrical box bodies 1 with a hollow structure, wherein the inner cavity of each box body 1 is filled with cooling liquid, the middle part of each box body 1 is movably connected with a crankshaft body 2 in a penetrating way, the cooling liquid in the inner cavity of each box body 1 covers the outer side of the middle part of the crankshaft body 2, used for cooling the crankshaft bodies 2, and simultaneously the cooling liquid has the function of lubrication, the outer sides of the mutually close ends of the two crankshaft bodies 2 are fixedly sleeved with connecting plates 3, a bearing sleeve 4 is arranged between one ends of the two connecting plates 3, the middle part of the bearing sleeve 4 is movably inserted with a fixed shaft 5 through a bearing, the two ends of the fixed shaft 5 are respectively fixedly connected with one end of the two connecting plates 3 in a penetrating way, the crankshaft body 2 can thus be rotated to bring the bearing sleeve 4 to rotate about the crankshaft body 2, while the bearing sleeve 4 itself can also be rotated about the stationary shaft 5.

Further, fixedly connected with arc 6 between two boxes 1, the lower extreme of arc 6 is provided with the ventilative cover of arc 7, the both ends of the ventilative cover of arc 7 respectively with the both ends fixed connection of arc 6, arc 6 and the ventilative cover of arc 7 all with the marginal fixed connection of box 1, the setting of the ventilative cover of arc 7 makes connecting plate 3, bearing housing 4 and fixed axle 5 homoenergetic and external contact to give off the external world fast with the heat that its during operation produced.

It is specific, upper surface middle part fixedly connected with piston cylinder 8 at arc 6, the inner chamber of the ring that arc 6 and the ventilative cover of arc 7 formed communicates with the inner chamber of piston cylinder 8, the inner chamber of piston cylinder 8 is provided with the sealed piston 9 with 8 looks adaptations of piston cylinder, there is piston connecting rod 10 at the lower surface middle part of sealed piston 9 through round pin axle swing joint, the lower extreme of piston connecting rod 10 and the lateral wall fixed connection of bearing housing 4, therefore bearing housing 4 when rotating around bent axle body 2, connecting action through piston connecting rod 10 can drive sealed piston 9 and do reciprocating sliding at the inner chamber of piston cylinder 8.

Secondly, the middle parts of the inner walls of the two sides of the box body 1 are fixedly connected with hollow sleeves 11, the hollow sleeves 11 are movably sleeved on the outer side of the crankshaft body 2, the inner cavity of the hollow sleeves 11 is fixedly provided with positioning bearings 12, the positioning bearings 12 are fixedly sleeved on the outer side of the crankshaft body 2, the middle parts of the two side surfaces of the box body 1 are fixedly connected with sealing shaft sleeves 13 through bolts, the outer sides of the crankshaft body 2 are movably sleeved with the sealing shaft sleeves 13, one ends of the sealing shaft sleeves 13 are positioned in the inner cavity of the hollow sleeves 11 and are matched with the hollow sleeves 11, the inner side walls of the sealing shaft sleeves 13 are connected with rubber pads in an adhesive mode, the arrangement of the sealing shaft sleeves 13 can play a role in sealing the joint of the box body 1 and the crankshaft body 2, and prevent cooling liquid in the inner cavity of the box body 1 from leaking, meanwhile, the cooling liquid in the inner cavity of the box body 1 can cool and lubricate the positioning bearing 12, and the service life of the positioning bearing 12 is prolonged.

And, all be provided with coolant liquid pipe 14 in the both sides of arc 6, the both ends of coolant liquid pipe 14 respectively with the inner chamber intercommunication of two boxes 1, hose and external circulating pump intercommunication are passed through at the middle part of coolant liquid pipe 14, and the intercommunication effect through coolant liquid pipe 14 can circulate the coolant liquid of box 1 inner chamber during external circulating pump work, reduces the temperature of coolant liquid on the one hand, and on the other hand avoids the coolant liquid not enough and leads to the unable cover in the outside of bent axle body 2 of coolant liquid.

The working principle of the utility model is as follows:

when the device is used, the crankshaft body 2 rotates to drive the connecting plate 3 to rotate, and further drives the fixed shaft 5 to rotate around the crankshaft body 2, at the moment, the bearing sleeve 4 on the outer side of the fixed shaft 5 rotates along with the rotation of the fixed shaft 5, and the bearing sleeve 4 can also rotate around the fixed shaft 5, so that the bearing sleeve 4 can drive the sealing piston 9 to slide in a reciprocating manner in the inner cavity of the piston cylinder 8 through the connecting action of the piston connecting rod 10, and power can be provided for the work of a compressor;

crankshaft body 2 is rotating the in-process, and the coolant liquid of 1 inner chamber of box can cool off and lubricate crankshaft body 2 and the location bearing 12 in the 2 outsides of crankshaft body to extension crankshaft body 2 and location bearing 12's life, simultaneously, the coolant liquid of 1 inner chamber of box can be circulated in external circulating pump work, thereby has avoided the coolant liquid of 1 inner chamber of box not enough and has influenced the cooling effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a novel crankcase structure for refrigerator compressor, includes two hollow structure and box (1) of symmetry, its characterized in that: the cooling liquid is injected into the inner cavity of the box body (1), the middle part of the box body (1) is movably connected with the crankshaft bodies (2) in a penetrating way, the outer sides of the ends, close to each other, of the two crankshaft bodies (2) are fixedly sleeved with the connecting plates (3), a bearing sleeve (4) is arranged between one ends of the two connecting plates (3), the middle part of the bearing sleeve (4) is movably inserted with a fixed shaft (5) through a bearing, two ends of the fixed shaft (5) are respectively and fixedly connected with one end of the two connecting plates (3) in a penetrating way, an arc-shaped plate (6) is fixedly connected between the two box bodies (1), the lower end of the arc-shaped plate (6) is provided with an arc-shaped ventilation cover (7), the two ends of the arc-shaped ventilation cover (7) are respectively fixedly connected with the two ends of the arc-shaped plate (6), the arc-shaped plate (6) and the arc-shaped ventilation cover (7) are fixedly connected with the edge of the box body (1).

2. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 1, wherein: the middle part of the upper surface of the arc-shaped plate (6) is fixedly connected with a piston cylinder (8), and an inner cavity of a ring formed by the arc-shaped plate (6) and the arc-shaped ventilation cover (7) is communicated with an inner cavity of the piston cylinder (8).

3. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 2, wherein: the inner cavity of the piston cylinder (8) is provided with a sealing piston (9) matched with the piston cylinder (8), the middle part of the lower surface of the sealing piston (9) is movably connected with a piston connecting rod (10) through a pin shaft, and the lower end of the piston connecting rod (10) is fixedly connected with the outer side wall of the bearing sleeve (4).

4. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 3, wherein: the middle parts of the inner walls of the two sides of the box body (1) are fixedly connected with hollow sleeves (11), and the hollow sleeves (11) are movably sleeved on the outer side of the crankshaft body (2).

5. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 4, wherein: the inner cavity of the hollow sleeve (11) is fixedly provided with a positioning bearing (12), and the positioning bearing (12) is fixedly sleeved on the outer side of the crankshaft body (2).

6. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 5, wherein: the middle parts of two side surfaces of the box body (1) are fixedly connected with sealing shaft sleeves (13) through bolts, the outer sides of the crankshaft body (2) are movably sleeved with the sealing shaft sleeves (13), one ends of the sealing shaft sleeves (13) are located in the inner cavities of the hollow sleeves (11) and are matched with the hollow sleeves (11), and rubber pads are connected to the inner side walls of the sealing shaft sleeves (13) in a bonding mode.

7. The novel crankcase structure for the compressor of the refrigerator as claimed in claim 6, wherein: the both sides of arc (6) all are provided with coolant liquid pipe (14), the both ends of coolant liquid pipe (14) communicate with the inner chamber of two boxes (1) respectively, the middle part of coolant liquid pipe (14) is passed through the hose and is communicated with external circulating pump.