CN212202414U

CN212202414U - Compressor cylinder with improved exhaust pulsation

Info

Publication number: CN212202414U
Application number: CN201922438032.0U
Authority: CN
Inventors: 周正红; 曹永新; 屠佳斌
Original assignee: Jiangsu Baixue Electric Appliances Co Ltd
Current assignee: Jiangsu Baixue Electric Appliances Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-12-22
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a compressor cylinder body with improve exhaust pulsation, including the cylinder body base, be equipped with valve plate connecting seat, bent axle hole and exhaust chamber on the cylinder body base respectively, be provided with the gas vent on the valve plate connecting seat, install a throttle pipe on the cylinder body base, the throttle pipe has first end and second end, the first end of throttle pipe is fixed mutually with the cylinder body base and is set up, the inside in exhaust chamber is stretched into to the second end, the exhaust chamber is linked together through the throttle pipe with the gas vent. According to the scheme, the throttle pipe is arranged on the cylinder body base to communicate the exhaust cavity with the exhaust port, so that exhaust pulsation can be effectively improved by reducing the aperture of the exhaust passage and increasing the length of the exhaust passage, and a manufacturer can increase exhaust damping by adjusting the length and the aperture of the throttle pipe hole, so that the exhaust pulsation is reduced, the vibration of a pipeline matched with a refrigerator is improved, and the noise caused by the vibration of the pipeline of the refrigerator is reduced.

Description

Compressor cylinder with improved exhaust pulsation

Technical Field

The utility model belongs to compressor cylinder body field, especially a refrigerator compressor cylinder body with interior exhaust pipe.

Background

With the diversification of the product structures of refrigerators, freezers and showcases in the market and the reduction of cost and materials, box body resonance noise (particularly products with external condensers) occurs in the matching process of most of small and medium-sized piston reciprocating compressors, and the use of manufacturers and users is influenced. Through experiments, the compressor exhaust pulsation is the main reason causing the resonance of the tank pipeline, and the intermittent exhaust of the compressor causes the non-uniform change of the gas flow in the exhaust passage to be the main reason for generating the exhaust pulsation.

In the past, a household small and medium piston reciprocating compressor processes an exhaust passage in a cylinder body in a drilling mode, namely the exhaust passage is processed in the drilling mode. Because the length of the drill hole is limited by the structure of the cylinder body, the aperture of the exhaust hole is limited by the processing technology, and the aperture and the length can not meet the optimal requirements all the time. Therefore, it is difficult to reduce the exhaust pulsation by improving the arrangement of the exhaust holes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a compressor cylinder body with improve exhaust pulsation.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides a compressor cylinder block with improve exhaust pulsation, includes the cylinder body base on be equipped with valve plate connecting seat, bent axle hole and exhaust chamber respectively, the valve plate connecting seat on be provided with the gas vent, the cylinder body base on install a throttle pipe, the throttle pipe first end and second end have, the first end of throttle pipe with cylinder body base fixed set up mutually, the second end stretches into the inside in exhaust chamber, the exhaust chamber with the gas vent pass through the throttle pipe be linked together.

In the above technical solution, it is preferable that the cylinder block base is provided with a mounting hole interposed between a side wall of the exhaust cavity and the exhaust port, and the mounting hole is configured to receive the throttle pipe in an interference fit.

In the above technical solution, preferably, the mounting hole is configured as a stepped hole, the large-diameter hole of the stepped hole is connected to the exhaust port, the stepped surface of the stepped hole deviates from the exhaust port, and the throttle pipe is disposed in the small-diameter hole of the stepped hole and in interference fit with the small-diameter hole. Preferably, the length of the large-diameter hole is 3-8 mm.

In the above technical scheme, preferably, the throttle pipe is a stepped pipe, the throttle pipe includes a first pipe section and a second pipe section having a pipe diameter smaller than that of the first pipe section, the first pipe section is in interference fit with the small-diameter hole, and the second pipe section extends into the exhaust cavity.

In the above-described aspect, the throttle pipe is preferably disposed such that the pipe inner diameter d is 1.5mm to 2.5mm and the length L3 is 25mm to 60 mm.

The utility model discloses utilize installation throttle pipe on the cylinder body base with intercommunication exhaust chamber and gas vent for can effectively improve the exhaust pulsation through the method that reduces exhaust passage aperture and increase exhaust passage length, the producer can increase exhaust damping through the length and the aperture of adjustment throttle pipe hole, realizes reducing the exhaust pulsation, thereby improves the pipeline vibration that matches the refrigerator, reduces the noise that refrigerator pipeline vibration arouses.

Drawings

Fig. 1 is a schematic top view (partially cut away) of a compressor cylinder body without a throttle pipe according to the present invention;

fig. 2 is a schematic top view (partially cut away) of the throttle pipe mounted on the compressor cylinder according to the present invention;

FIG. 3 is a schematic cross-sectional view of a throttle tube according to the present invention;

FIG. 4 is a diagram of the venting effect of a cylinder vent of the prior art;

FIG. 5 is a diagram illustrating the exhaust effect of the throttle pipe according to the present invention;

FIG. 6 is a graph of data comparing noise in a refrigerator employing the prior art vent of FIG. 4 and the throttle tube of FIG. 5 as the vent path;

100. a compressor cylinder; 1. a cylinder block base; 2. a valve plate connecting seat; 3. a crankshaft bore; 4. an exhaust chamber; 21. an exhaust port; 41. a side wall; 23. mounting holes; 5. a throttle pipe; 501. a first end portion; 502. a second end portion; 231. a large-diameter hole; 232. a step surface; 233. a small pore diameter; 51. a first tube section; 52. a second pipe section.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments shown in the accompanying drawings.

As shown in fig. 1, the compressor cylinder block 100 includes a cylinder block base 1, a valve plate connecting base 2, a crank hole 3, and an exhaust chamber 4 are respectively provided on the cylinder block base 1, an exhaust port 21 is provided on the valve plate connecting base 2, a mounting hole 23 between a side wall 41 of the exhaust chamber 4 and the exhaust port 21 is provided on the cylinder block base 1, and a throttle pipe 5 provided separately from the cylinder block base 1 may be mounted in the mounting hole 23.

As shown in fig. 2, the throttle pipe 5 is installed in the installation hole 23, the entire throttle pipe 23 is located inside the exhaust hole 21, and after the installation of the throttle pipe 5 is completed, the first end portion 501 of the throttle pipe 5 is fixedly disposed with the cylinder block base 1, and the second end portion 502 extends into the exhaust cavity 4, so that the exhaust cavity 4 and the exhaust hole can be communicated.

In this example, the mounting hole 23 is configured to receive the throttle tube 5 in an interference fit, specifically: the mounting hole 23 is configured as a stepped hole and the throttle pipe 4 is a stepped pipe. The large-diameter hole 231 of the mounting hole 23 is in contact with the exhaust port 21, and the step surface 232 of the step hole 23 is away from the exhaust port 21.

As shown in fig. 3, the throttle pipe 5 comprises a first pipe section 51 and a second pipe section 52 having a smaller pipe diameter than the first pipe section 51. As can be seen from fig. 2, the first pipe section 51 is in interference fit with the small-diameter hole 233 of the mounting hole 23, and the second pipe section 52 extends into the exhaust cavity 4, so that the throttle pipe 5 is fixedly arranged with the cylinder base 1.

In this example, the diameter of the mounting hole 23 is matched with the outside diameter of the throttle pipe 5 in order to meet the performance requirements of the domestic small and medium piston reciprocating compressor. In the mounting hole 23, the length L1 of the large-diameter hole 231 is set to 3mm to 8 mm. The throttle pipe 5 is disposed so that the pipe inner diameter phid is 1.5mm to 2.5mm and the length L3 is 25mm to 60 mm. After the throttle pipe 5 is assembled, the second end 502 of the throttle pipe 5 forms an exhaust passage from the exhaust port 21, i.e., the length L3 of the throttle pipe 5 and the length L1 of the large-diameter hole 231 of the mounting hole 23 form the total length of the exhaust passage for the airflow in the exhaust chamber 4 to escape.

In the discharge case of the reciprocating compressor shown in fig. 4, the discharge line in the prior art is short and has a large aperture, in which case the discharge pulsation at the outlet is large; while, as shown in fig. 5, the pulsation of the exhaust gas at the outlet is relieved after the reduction of the exhaust hole diameter and the lengthened hole length are achieved by using the throttle pipe as the exhaust pipe.

As shown in fig. 6, the noise of the reciprocating compressor with the piston of the compressor cylinder is greatly improved when the compressor is assembled in the refrigerator, compared with the assembly of the driving compressor. Table 1 is a parameter table of the bar chart in fig. 6.

Figure DEST_PATH_208096DEST_PATH_IMAGE002

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a compressor cylinder block with improve exhaust pulsation, includes cylinder block base (1) on be equipped with valve plate connecting seat (2), bent axle hole (3) and exhaust chamber (4) respectively, valve plate connecting seat (2) on be provided with gas vent (21), its characterized in that, cylinder block base (1) on install a throttle pipe (5), throttle pipe (5) first end (501) and second end (502) have, first end (501) of throttle pipe (5) with cylinder block base (1) fixed set up mutually, second end (502) stretch into the inside of exhaust chamber (4), exhaust chamber (4) with gas vent (21) pass through throttle pipe (5) be linked together.

2. The compressor cylinder with improved discharge pulsation according to claim 1, wherein a mounting hole (23) is provided on the cylinder base (1) between a sidewall (41) of the discharge chamber (4) and the discharge port (21), the mounting hole (23) being configured to receive the throttle pipe (5) in an interference fit.

3. The compressor cylinder with improved exhaust gas pulsation according to claim 2, wherein the mounting hole (23) is configured as a stepped hole, the large diameter hole (231) of the stepped hole is connected with the exhaust port (21), the stepped surface (232) of the stepped hole is away from the exhaust port (21), and the throttle pipe (5) is arranged in the small diameter hole (233) of the stepped hole and is in interference fit with the small diameter hole (233).

4. The compressor cylinder with improved exhaust pulsation according to claim 3, wherein the length of the large diameter hole (231) is 3-8 mm.

5. The compressor cylinder with improved exhaust gas pulsation according to claim 3, wherein the throttle pipe (5) is a stepped pipe, the throttle pipe (5) comprises a first pipe section (51) and a second pipe section (52) with a smaller pipe diameter than the first pipe section (51), the first pipe section (51) is in interference fit with the small-diameter hole (233), and the second pipe section (52) extends into the exhaust gas cavity (4).

6. The compressor cylinder with improved exhaust gas pulsation according to claim 1, wherein the throttle pipe (5) is disposed with a pipe inner diameter d of 1.5mm to 2.5mm and a length L3 of 25mm to 60 mm.