CN105351196A

CN105351196A - Miniature refrigeration compressor

Info

Publication number: CN105351196A
Application number: CN201410414302.3A
Authority: CN
Inventors: 李永安
Original assignee: LUOYANG CHINA INDUSTRIAL Co Ltd
Current assignee: LUOYANG CHINA INDUSTRIAL Co Ltd
Priority date: 2014-08-21
Filing date: 2014-08-21
Publication date: 2016-02-24

Abstract

The invention relates to a miniature refrigeration compressor. A lower cylinder cover (3) of a compressor is provided with a cavity (9). The upper end face of the cavity (9) of the lower cylinder cover (3) is equipped with a sealing member (5) and an exhaust baffle (6). A sealed space is formed among the cavity (9) of the lower cylinder cover (3) and the sealing member (5) and the exhaust baffle (6). The miniature refrigeration compressor also comprises an exhaust duct (4) which penetrates through a cylinder and an upper cylinder cover (2) to be communicated with the cavity (9) of the lower cylinder cover (3). Through the arrangement of the cavity, gas discharged out of the cylinder is discharged into the cavity (9) to resonate inside the cavity (9) for noise abatement, so as to effectively reduce ripple and noise of exhaust. Due to the arrangement of the exhaust duct, high-pressure and high-speed gas can pass through the exhaust duct (4) to be directly discharged above the compressor, so as to prevent lubricating oil below a casing from being taken away with the gas. Thus, it is guaranteed that the compressor can have sufficient lubricating oil and operation failure of the compressor is minimized.

Description

A kind of Minitype refrigeration compressor

Technical field

The present invention relates to a kind of heat pump and refrigeration system apparatus field, be specifically related to a kind of microminiature refrigeration compressor.

Background technique

In heat pump and refrigeration system, usually use refrigeration compressor, refrigeration compressor drives compressor pump to realize the compression of gas by motor.The pump housing of this compressor comprises: upper cylinder cover, cylinder, is arranged on the slide plate in cylinder groove, bent axle, be enclosed within the rolling piston on bent axle, lower cylinder head, exhaust valve component, vent closure, exhaust screen, wherein cylinder is divided into air aspiration cavity and exhaust cavity by spring compression by slide plate in cylinder groove.

But existing compressor be vented time can produce larger pulsations, and the high pressure air of discharging knows from experience the refrigerator oil taking away casing bottom, to such an extent as to lack enough lubricant oil after compressor operating a period of time, thus the phenomenon causing compressor to produce fault occurs.

Summary of the invention

The present invention is intended to provide a kind of Minitype refrigeration compressor reducing pulsations, and ensures can there be sufficient lubricant oil bottom compressor.

Refrigeration compressor of the present invention comprises: motor, upper cylinder cover, cylinder, slide plate, rolling piston, bent axle, lower cylinder head, wherein motor drives rolling piston to rotate in cylinder by bent axle, upper cylinder cover is provided with bearing hole, cylinder there is the vane slot that can hold slide plate, lower cylinder head is also provided with bearing hole, and bent axle and upper cylinder cover, cylinder, rolling piston, slide plate, lower cylinder head fit together;

Lower cylinder head offers die cavity, is equipped with Sealing and exhaust screen in the upper-end surface of the die cavity of lower cylinder head, between the die cavity on lower cylinder head and Sealing, exhaust screen, jointly form a space sealed.

Described die cavity is irregular shape.

Described die cavity is one or more.

The exhaust port that can be vented is provided with in die cavity.

The exhaust valve component mounting groove that can hold exhaust valve component is also provided with in die cavity.

Also comprise one and run through cylinder and upper cylinder cover, thus the exhaust passage communicated with the die cavity of lower cylinder head.

By the setting of above-mentioned die cavity, make to be discharged in die cavity from the gas of discharging in compressor pump through exhaust port, airtight cavity space can produce the effect of a sympathetic response silencing apparatus, can reduce the pulsations of exhaust.

Due to the setting of exhaust passage, because the gas flow rate of high pressure is very fast, compared with traditional compressor, the hole that the interior process of irregular die cavity that gas is discharged to sealing runs through exhaust passage directly can be discharged to the top of compressor, therefore refrigerator oil would not be taken away by the gas of high pressure in casing bottom, thus ensure that compression function has sufficient lubricant oil, reduce the generation of compressor operating fault.

Accompanying drawing explanation

Fig. 1 represents the overall structure figure of refrigeration compressor of the present invention;

Fig. 2 represents the structural representation of the Sealing on the lower cylinder head of refrigeration compressor of the present invention;

Fig. 3 represents the structural representation of the lower cylinder head of refrigeration compressor of the present invention.

Description of reference numerals:

1-motor; 2-upper cylinder cover; Cylinder head under 3-; 4-exhaust passage; 5-Sealing; 6-exhaust screen; 7-exhaust port; 8-exhaust valve component mounting groove; 9-die cavity

Embodiment

Below with reference to the accompanying drawings the specific embodiment of the present invention is described in detail.

Fig. 1 represents the overall structure figure of refrigeration compressor of the present invention, and Fig. 2 represents the structural representation of the Sealing on the lower cylinder head of refrigeration compressor of the present invention, and Fig. 3 represents the structural representation of the lower cylinder head of refrigeration compressor of the present invention.

As shown in Figure 1, refrigeration compressor of the present invention comprises: motor 1, upper cylinder cover 2, cylinder, slide plate, rolling piston, bent axle, lower cylinder head 3, wherein motor 1 drives rolling piston to rotate in cylinder by bent axle, upper cylinder cover 2 is provided with bearing hole, cylinder there is the vane slot that can hold slide plate, lower cylinder head 3 is also provided with bearing hole, and bent axle and upper cylinder cover 2, cylinder, rolling piston, slide plate, lower cylinder head 3 fit together.

In the prior art, gas in compressor cylinder forms the gas of high pressure after piston compression, directly cylinder is discharged by exhaust port, such mode can bring larger exhaust noise, this noise energy that not only loss is a large amount of, also can cause stronger vibration, therefore for the especially little new compressor of compressor, harm is huge, directly can affect the working life of compressor time serious.

In addition, gas after overcompression of the prior art is directly expelled to cylinder outside, because this gas pressure is higher, flow velocity is very fast, the ice machine oil bottom compressor can be caused to be taken away by gas or extrude compressor, and then enough lubricant oil can not be ensured after causing compressor operating a period of time, and then add the probability of happening of compressor operating fault.

As shown in Figure 1, according to an embodiment of the invention, in order to overcome above-mentioned defect of the prior art, lower cylinder head 3 offers die cavity 9, be equipped with Sealing 5 and exhaust screen 6 in the upper-end surface of the die cavity 9 of lower cylinder head 3, between the die cavity 9 on lower cylinder head 3 and Sealing 5, exhaust screen 6, jointly form a space sealed.

Above-mentioned mode of execution of the present invention makes the gas after cylinder compresses be discharged in die cavity 9 through exhaust port 7, gas through airtight cavity space can produce the process of turning back and bumping against, this process can play the effect that sympathetic response is eliminated the noise, and can reduce the pulsations of exhaust preferably.

Fig. 2 shows the concrete structure schematic diagram of the Sealing 5 of die cavity 9 upper end being assembled to lower cylinder head 3.

Further, according to an embodiment of the invention, described die cavity 9 is irregular shape, the active force of a different direction bounce-back can be produced to the gas from same direction by this irregular shape, gas is advanced towards different directions, thus generation negative function, and then more effectively reduce the pulsations of gas.

According to an embodiment of the invention, described die cavity 9 is one or more, is arranged so that the course of gas becomes longer by multiple die cavity, and serving the abated effect of noise further increases.

As shown in Figure 3, according to an embodiment of the invention, in described die cavity 9, be provided with the exhaust port 7 that can be vented, thus the gas in cylinder after overcompression can be expelled in the die cavity 9 of lower cylinder head.

Further, according to an embodiment of the invention, the exhaust valve component mounting groove 8 that can hold exhaust valve component is also provided with in die cavity 9, make exhaust valve component can be mounted in die cavity 9 by exhaust valve component mounting groove 8, according to exhaust pressure and time need open or close exhaust valve component, the gas after overcompression can be successfully expelled in die cavity 9.

Further, according to an embodiment of the invention, also comprise one in compressing mechanism and run through cylinder and upper cylinder cover 2, thus the exhaust passage 4 communicated with the die cavity 9 of lower cylinder head 3, by above-mentioned setting, make the gas being weakened pulsations in die cavity 9 by complete or major part, be directly discharged to the top of compressor through exhaust passage 4.

Be understandable that, the object of such design is that the high-voltage high-speed gas in order to prevent cylinder from discharging takes the lubricant oil of casing bottom out of compressor, by the setting of above-mentioned exhaust passage 4, therefore thus reduce compressor owing to running the operation troubles of the compressor brought owing to lacking lubricant oil after a period of time gas directly discharges the top of compressor, can not take away the lubricant oil of bottom, and save lubricant oil, save cost, economical and effective, convenient feasible.

Above-described embodiment not limits the invention, and those skilled in the art can design alternative embodiment when not departing from claims scope.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.

Claims

1. a Minitype refrigeration compressor, its structure comprises: motor (1), upper cylinder cover (2), cylinder, slide plate, rolling piston, bent axle, lower cylinder head (3), wherein motor (1) drives rolling piston to rotate in cylinder by bent axle, upper cylinder cover (2) is provided with bearing hole, cylinder there is the vane slot that can hold slide plate, lower cylinder head (3) is also provided with bearing hole, bent axle and upper cylinder cover (2), cylinder, rolling piston, slide plate, lower cylinder head (3) fit together, it is characterized in that

Lower cylinder head (3) offers die cavity (9), be equipped with Sealing (5) and exhaust screen (6) in the upper-end surface of the die cavity (9) of lower cylinder head (3), between the die cavity (9) on lower cylinder head (3) and Sealing (5), exhaust screen (6), jointly form a space sealed.

2. a kind of Minitype refrigeration compressor according to claim 1, is characterized in that, described die cavity (9) is irregular shape.

3. a kind of Minitype refrigeration compressor according to claim 1, is characterized in that, described die cavity (9) is for one or more.

4. a kind of Minitype refrigeration compressor according to claim 1, is characterized in that, is provided with the exhaust port (7) that can be vented in die cavity (9).

5. a kind of Minitype refrigeration compressor according to claim 4, is characterized in that, is also provided with the exhaust valve component mounting groove (8) that can hold exhaust valve component in die cavity.

6. a kind of Minitype refrigeration compressor according to claim 1, it is characterized in that, also comprise one and run through cylinder and upper cylinder cover (2), thus the exhaust passage (4) communicated with the die cavity (9) of lower cylinder head (3).