CN101590339B

CN101590339B - Filtering device

Info

Publication number: CN101590339B
Application number: CN2008100380749A
Authority: CN
Inventors: 周易; 丁洪亮; 凌怡銂
Original assignee: Shanghai Hitachi Household Appliance Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2008-05-26
Filing date: 2008-05-26
Publication date: 2012-11-21
Anticipated expiration: 2028-05-26
Also published as: CN101590339A

Abstract

The invention discloses a filtering device comprising a filtering assembly and a pipe. The filtering assembly comprises a sieve and two sealing connectors. The pipe is provided with a hole. The filtering device is characterized in that the sieve is cylindrical; and the two sealing connectors are toroidal, respectively hermetically cooperated at two end parts of the sieve so as to form the filtering assembly, and respectively hermetically cooperated on the wall of the pipe at two sides of the hole of the pipe so as to cover the hole in the filtering assembly, therefore, fluid passes through the sieve and is filtered before entering the hole from the outside of the pipe.

Description

Filter

Technical field

The present invention relates to a kind of filter, and relate in particular to the filter that is used to filter oil return.

Background technology

Usually, in oil return apparatus, make it lose the oil return effect in order to prevent impurity or block from stopping up spill port, needing increases filter in addition so that oil return is filtered.Fig. 1 shows a kind of known oil-returning filtering device, and this filter has the filter screen bracket 12 of filter screen 11 and this filter screen of supporting, is filtered the back from the oil return of top by filter screen 11 and gets into this pipe through the spill port on the pipe of below 13.This filter apparatus configuration is complicated, and manufacturing process is also complicated, and cost is higher.

Summary of the invention

The object of the present invention is to provide a kind of filter, to overcome the shortcoming of existing filter.

According to the present invention, a kind of filter is provided, it comprises filter assemblies and pipe, and said filter assemblies comprises filter screen and two seal connectors, and said pipe is provided with the hole.Filter screen is a cylindrical shape, and two seal connectors are annular.Two seal connectors are sealed and matched respectively and sentence the formation filter assemblies in two ends of filter screen; And two seal connectors are engaged on the tube wall of pipe at the both sides sealing in the hole of managing respectively; With with said maskaperture mask in said filter assemblies, thereby outside pass through strainer filtering before getting into the hole at fluid from managing.

Preferably, said seal connector is an annulus, and the inner surface of two ends of the outer surface of said annulus and filter screen is sealed and matched, and the outer surface of the tube wall of the inner surface of annulus and pipe is sealed and matched.

Preferably, fixing between the end of said annulus and filter screen through the circumference welding.

Preferably; Said seal connector is a pressure ring; The ring wall of said pressure ring is formed with U-lag, being dimensioned to the end that makes filter screen and can being engaged in wherein of said U-lag, and through compress processing with the end sealing and fixing of filter screen in said U-lag; So that two pressure rings are separately fixed at the two ends of filter screen, and the outer surface of the tube wall of the inner surface of pressure ring and pipe is sealed and matched.

Preferably, fixing between the tube wall of said seal connector and pipe through the circumference welding.

Preferably, between the tube wall of said seal connector and pipe be interference fit.

Preferably, the diameter of the mid portion of said columnar filter screen is greater than the diameter at place, both ends.

Description of drawings

Fig. 1 is a kind of cutaway view of known oil-returning filtering device;

Fig. 2 is the vertical view according to the filter assemblies of first embodiment of the invention;

Fig. 3 is the cutaway view that filter assemblies shown in Figure 2 obtains along the line A-A among Fig. 2;

Fig. 4 is the cutaway view according to the filter of first embodiment of the invention;

Fig. 5 is the vertical view according to the filter assemblies of second embodiment of the invention;

Fig. 6 is the cutaway view that filter assemblies shown in Figure 5 obtains along the line B-B among Fig. 5;

Fig. 7 is the cutaway view according to the filter of second embodiment of the invention.

The specific embodiment

The present invention will be described for the embodiment that following reference is used for oil return is filtered, and these embodiment do not limit purposes of the present invention.

Fig. 2 and Fig. 3 show the filter assemblies 20 according to the first embodiment of the present invention.This filter assemblies 20 comprises filter screen 21 and two annulus 22.As shown in Figures 2 and 3, filter screen 21 is roughly cylindrical shape, and the diameter of intermediate portion can be greater than the diameter at place, both ends.The external diameter of annulus 22 equals the internal diameter of filter screen 21 ends basically, so that two annulus 22 can be sealed and matched respectively in two ends of filter screen 21, and fixes through the circumference welding between filter screen 21 and two annulus 22, thereby forms filter assemblies 20.

Fig. 4 illustrates the filter according to the first embodiment of the present invention.As shown in Figure 4; The internal diameter of annulus 22 equals to manage 23 external diameter basically; So that make annulus 22 can be engaged on the pipe 23 at the both sides sealing of the spill port 24 on the pipe 23; So that spill port 24 is covered in filter assemblies 20, thereby filter through said filter screen 21 before from managing the 23 outside spill ports 24 that get in oil return.Can be fixing between the tube wall of annulus 22 and pipe 23 through the circumference welding, thus filter assemblies 20 is fixed on the pipe 23, to form filter according to first embodiment of the invention.In addition, can be interference fit between the tube wall of annulus 22 and pipe 23, to guarantee sealing.The diameter that the diameter of filter screen 21 mid portions of general cylindrical shape is located greater than both ends, thus make the bigger spacing of maintenance between filter screen 21 and the spill port 24, help oil return and flow into spill port 24 smoothly.This shows that above-mentioned filter apparatus configuration according to the present invention is simple, cost is lower, and manufacturability is strong.

Fig. 5 to Fig. 6 shows filter assemblies 30 according to a second embodiment of the present invention.Use identical parts among the indication of identical Reference numeral and first embodiment in this embodiment, and only the difference of second embodiment and first embodiment is described.Filter assemblies 30 comprises filter screen 21 and two pressure rings 32.As shown in Figure 6, the ring wall of pressure ring 32 is formed with U-lag, being dimensioned to the end that makes filter screen 21 and can being engaged in wherein of this U-lag, and through compress processing with the end sealing and fixing of filter screen 21 in this U-lag.In this way, two pressure rings 32 are separately fixed at the two ends of filter screen 21.

Fig. 7 shows filter according to a second embodiment of the present invention.As shown in Figure 7; The internal diameter of pressure ring 32 equals to manage 23 external diameter basically; So that make pressure ring 32 can be engaged on the pipe 23 at the both sides sealing of the spill port 24 on the pipe 23; So that spill port 24 is covered in filter assemblies 30, thereby filter through said filter screen 21 before from managing the 23 outside spill ports 24 that get in oil return.Can be fixing between the tube wall of pressure ring 32 and pipe 23 through the circumference welding, thus filter assemblies 30 is fixed on the pipe 23, to form filter according to second embodiment of the invention.In addition, can be interference fit between the tube wall of pressure ring 32 and pipe 23, to guarantee sealing.This shows that filter manufacturing process according to a second embodiment of the present invention is simple, with low cost.

Though preceding text have been explained the present invention with reference to oil-returning filtering device, should be understood that the present invention also can be used for other fluid is filtered.Though describe the present invention with reference to two embodiment of the present invention, those skilled in the art can make various modifications and not depart from the scope of the present invention technical scheme of the present invention.

Claims

1. filter, it comprises filter assemblies and pipe, said filter assemblies comprises filter screen and two seal connectors; Said pipe is provided with the hole; It is characterized in that said filter screen is a cylindrical shape, said two seal connectors are annular; Said two seal connectors are sealed and matched respectively to sentence in two ends of said filter screen and form said filter assemblies; And said two seal connectors are engaged on the tube wall of said pipe at the both sides sealing in the hole of said pipe respectively, with said maskaperture mask in said filter assemblies, thereby fluid from said pipe outside get into said hole before through said strainer filtering.

2. filter according to claim 1; It is characterized in that; Said seal connector is an annulus, and the inner surface of two ends of the outer surface of said annulus and said filter screen is sealed and matched, and the outer surface of the tube wall of the inner surface of said annulus and said pipe is sealed and matched.

3. filter according to claim 2 is characterized in that, and is fixing through the circumference welding between the end of said annulus and said filter screen.

4. filter according to claim 1; It is characterized in that said seal connector is a pressure ring, the ring wall of said pressure ring is formed with U-lag; Being dimensioned to the end that makes filter screen and can being engaged in wherein of said U-lag; And through compress processing with the end sealing and fixing of said filter screen in said U-lag so that said two pressure rings are separately fixed at the two ends of said filter screen, and the outer surface of the tube wall of the inner surface of said pressure ring and said pipe is sealed and matched.

5. filter according to claim 1 is characterized in that, and is fixing through the circumference welding between the tube wall of said seal connector and said pipe.

6. filter according to claim 1 is characterized in that, is interference fit between the tube wall of said seal connector and said pipe.

7. any described filter in requiring according to aforesaid right is characterized in that the diameter of the mid portion of said columnar filter screen is greater than the diameter at place, both ends.