CN2913978Y

CN2913978Y - Compressor

Info

Publication number: CN2913978Y
Application number: CN 200620059901
Authority: CN
Inventors: 周红涛; 炊军立; 先本孝正
Original assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Current assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Priority date: 2006-06-05
Filing date: 2006-06-05
Publication date: 2007-06-20
Anticipated expiration: 2016-06-05

Abstract

The utility model discloses a compressor, which comprises an outer casing, a motor, a pump body and a liquid reservoir, wherein the liquid reservoir includes a shell and an L-shaped pipe penetrating out of bottom of the shell. The utility model is characterized in that for the L-shaped pipe, the section inside the shell has an inner diameter larger than that of the section outside the shell. With the above structure, the section inside the shell having a large inner diameter can reduce gas resistance loss in the L-shaped pipe, while the section outside the shell having small inner diameter can increase gas flow speed into a gas cylinder, so as to make gas flow into the gas cylinder more easily, reduce the work needed for the gas cylinder to suck in refrigerant, reduce input of the compressor, and thereby improving integral COP (coefficient of performance) of the compressor.

Description

A kind of compressor

Technical field

The utility model relates to a kind of compressor.

Background technology

Existing compressor generally is made up of compressor case, motor, the pump housing and reservoir, its reservoir is all upright in aggregates by inner connection tube and outer connecting pipe and compressor housing and pump housing group, its reservoir is made of with the interior L of connection pipe housing, last air intake duct, interior separate mesh, bottom plate, its housing can be two differentiation and three differentiation structures, its lower baffle plate is not essential, see the instructions for use decision, its L pipe can be integral type and two sections change designs are upright in aggregates by welding process and reservoir housing group again.But no matter one section change or two sections change structures, the diameter that its L pipe divides in enclosure interior and housing is outer and the equal diameters of inner phase-splitting coupling part.

For the compressor that uses existing reservoir, its reservoir is because the internal diameter the same (as Fig. 2 B, 2D, 2E) of the part of its L pipe in housing and hull outside branch, behind the upright compressor of group, go into power at same test condition lower compression machine and rise, cause the COP value of compressor to descend.Now also some reservoir adopt outside the method for reducing come lift gas enter cylinder flow velocity and promote the COP of compressor, but be subjected to the restriction in space, its big or small bore ratio range changes very little, and the effect that COP promotes also is little (as Fig. 2 C) very

Summary of the invention

For addressing the above problem, the purpose of this utility model provides a kind of compressor, and the whole COP of its compressor is promoted.

The purpose of this utility model is achieved in that a kind of compressor, form by compressor case, motor, the pump housing and reservoir, the reservoir L pipe that includes housing and run through housing bottom in the housing wherein, it is characterized in that: the internal diameter of the housing inner segment of described L pipe is greater than the internal diameter of the outer section of housing.

The ratio of the outer section of the housing inner segment internal diameter of described L pipe and housing internal diameter is 110%～160%.

The outer section of the housing inner segment of described L pipe and housing is made into integration.

The outer section of the housing inner segment of described L pipe and housing is separately made and links into an integrated entity.

The upper end enlarging of the outer section of described housing forms a transition shoulder socket and is fixed in outside the housing inner segment.

The lower end enlarging of described housing inner segment forms a transition shoulder, and the outer section upper end enlarging of housing forms another transition shoulder and is socketed on just in the housing inner segment lower port.

The transition shoulder width of described housing inner segment lower end enlarging is more than or equal to housing inner segment upper port thickness.

Reservoir of the present utility model adopts the L tubular construction of housing inner segment internal diameter greater than the outer section of housing internal diameter, the housing inner segment of its large diameter can reduce the drag losses of gas in the L pipe, and but the outer section of the housing of little internal diameter lift gas enters the flow velocity of cylinder, allow in the easier inflow cylinder of gas, allow cylinder suck the required merit minimizing that refrigerant enters cylinder, thereby reduce the power of going into of compressor, finally promote the whole COP of compressor.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 A, 2B, 2C, 2D, 2E are respectively the structural representations of the utility model reservoir and several reservoirs of the prior art;

Fig. 3 A, 3B, 3C are respectively the syndeton schematic diagrames (part) of inside and outside section of the housing of the utility model L pipe.

The specific embodiment

As shown in Figure 1, the utility model is a kind of compressor, is made up of compressor case 3, motor 4, the pump housing 5 and reservoir 1, and reservoir is made of with the interior L of connection pipe housing, last air intake duct, interior separate mesh, bottom plate.This reservoir 1 is identical with the method for assembling of existing reservoir and compressor with the method for assembling of compressor, the L pipe that all is reservoir 1 is upright in aggregates with the housing 1 and 5 groups of the pump housings of compressor by pipe 7 in connecting outer tube 6 and being connected, motor 4 rotors are directly installed on the bent axle with the pump housing 5 by hot jacket, and stator is directly installed by hot jacket and the housing 3 of compressor on, when compressor is switched on, motor 4 produces rotating excitation field, the drive compressor drum rotates, this moment, refrigerant sucked gas by the cylinder suction inlet from reservoir 1 by the pump housing 5, gas forms high pressure-temperature gas by the pump housing 5 compression backs, discharge from the exhaust outlet 2 of compressor again, get back to reservoir 1 once more through after the air-conditioning system, thereby constitute a circulation.

Shown in Fig. 2 A, wherein the L of reservoir 1 pipe is affixed with housing, runs through upright with the housing 1 and 5 groups of the pump housings of compressor behind the housing bottom in the housing.This L pipe is two parts by the location definition of relative reservoir housing, and the part that wherein is positioned at the reservoir housing is a housing inner segment 15, and being positioned at the outer part of reservoir housing is the outer section 18 of housing, the internal diameter of housing inner segment 15 greater than the internal diameter of the outer section 18 of housing.According to the effect of manufacture process requirement and COP lifting, the ratio of the outer section of housing inner segment 15 internal diameters of L pipe and housing 18 internal diameters is preferably in 110%～160%.The upper port of L tube shell inner segment 15 can be angle or flat mouth, when adopting bezel designs, can increase the air inlet area of gas.The L pipe can be provided with more than one or one as required.

The housing inner segment 15 of L pipe can be made into integration with the outer section 18 of housing, also can split be welded together again, and the interface inwall should seamlessly transit as far as possible, to reduce the resistance to gas.

Embodiment 1

Shown in Fig. 2 A, the reservoir in the present embodiment comprises: air intake duct 11, case top lid 12, housing lower cover 17, cylindrical shell 14, filter screen bracket 13, baffle plate 16 and L pipe.Air intake duct 11 is upright in aggregates by the method group of welding with case top lid 12.Case top lid 11 and housing lower cover 17 stand in by the welding process group and form cylindrical shell 14 together.Having the filter screen bracket 13 of filter screen to be arranged in the cylindrical shell 14 fixedlys connected with cylinder inboard wall.Baffle plate 16 is arranged at the effect that gasified liquid is played in cylindrical shell 14 interior bottoms.Be provided with in the cylindrical shell 14 always to wear and cover 17 and the upright L in aggregates pipe of group with it, this L pipe is up big and down small, is made up of the outer section 18 of housing that bigger housing inner segment 15 of internal diameter and internal diameter are less.Flat mouthful or angle 15a design can be adopted in housing inner segment 15 tops, thereby as are designed to angle and can increase the air inlet area that gas flows in the bassoon and promote compressor COP.The outer section 18 of housing inner segment 15 and housing is upright in aggregates by the method and 17 groups of the lower covers of welding.

As shown in Figure 3A, housing inner segment 15 lower ends of L pipe will be implemented a flared method and will be connected with the outer section 18 of housing, after 15 enlargings of housing inner segment a transition shoulder will be arranged, the design angle of the outer section of housing 18 connecting portion 18a is identical as far as possible with the angle of housing inner segment 15 connecting portion 15b, and the thickness at connecting portion 18a place is equal to or less than the width of the chamfering connecting portion 15b of housing inner segment 15 as far as possible simultaneously.The 18 top enlargings of the outer section of housing are provided with a transition shoulder 18b, and the radius of the step 18b bottom of the outer section 18 of housing will be less than the top radius.Housing inner segment 15 lower ends are socketed on section 18 tops outside the housing, both weldings, thereby the L tubular construction of the big outer section little interface smooth transition of formation inner segment.

Embodiment 2

The housing inner segment 15 of L pipe also can adopt the method for assembling shown in Fig. 3 B with the method for attachment of the outer section 18 of housing, the method production of enlarging is adopted in the outer section of housing 18 upper ends, the same transition shoulder 18b ' that forms, but housing inner segment 15 lower end chamferings are chamfering not also, housing inner segment 15 is socketed in the outer section 18 of housing, both weldings then, thereby the L tubular construction of the big outer section little interface smooth transition of formation inner segment.Same welding process and the housing lower cover 17 of adopting of L pipe stands in aggregates by the welding process group.

Other is with embodiment 1.

Embodiment 3

Shown in Fig. 3 C, the housing inner segment 15 of L pipe is made into integration with the outer section 18 of housing, forms one between the two and seamlessly transits step 18c.The L pipe is upright in aggregates by welding process and 17 groups of cylindrical shell lower covers

Other is with embodiment 1.

The contrast experiment

The purpose of this utility model is to improve the COP of compressor.For improving the COP of compressor, reservoir of the present utility model such as Fig. 2 A have reservoir (as Fig. 2 B) now and compare, because the caliber that the L pipe divides in the reservoir enclosure interior enlarges, its effect that promotes COP is apparent in view.

Two reservoirs are compared, suppose that two reservoir volumes equate, under same test condition, pressure will be the same in its reservoir, all be Ps for same machine.

The caliber that defines the L tube shell inner segment of existing reservoir is φ d1, and the pressure in the pipe is Pl1, and gas flow rate is Vl1, and flowing through the needed time of L1 length is t1, the outer section 18 of L tube shell ' caliber be φ d1 '.The pressure that the pipe exit has just begun to enter in the compressor cylinder is Pw1, and gas flow rate is Vw1, and outside pipe range is L1 ', and it is t1 ' that gas flows through this section required time.

The caliber that defines the L tube shell inner segment 15 of reservoir of the present utility model is φ d2, and the pressure in the pipe is Pl2, and gas flow rate is Vl2, and flowing through the needed time of L2 length is t2, and the caliber of the outer section 18 of L tube shell is φ d2 '.The pressure that the pipe exit has just begun to enter in the compressor cylinder is Pw2, and gas flow rate is Vw2, and outside pipe range is L2 ', and it is t2 ' that gas flows through this section required time.

Enter the pressure Pw1=Pw2 in the cylinder, to compressor as same capacity, the amount that gas enters in the cylinder will be certain, total amount so gas is flowed through in L1 and the L2 will be certain, because φ d2＞φ d1, so flow velocity Vl2＜Vl1, form Pl2＞Pl1, at this moment the pressure that enters bottom L pipe import department there are differences, because Pw1=Pw2, so the pressure difference Pl2-Pw2＞Pl1-Pw1 of reservoir of the present utility model, compare with the reservoir of prior art, gas is easier to be entered in the cylinder, and gas flow rate will rise, and compressor sucks gas that needed merit will descend in the cylinder.

When the distance that moves is L2, there are differences than the speed that gas moves in φ d1 for isometric(al) gas translational speed in φ d2, Vl2＜Vl1, the gas translational speed is slack-off, the distance that moves in equal time will shorten, gas moves in pipeline will have frictional force to produce, and take all factors into consideration the relation of frictional force and displacement, select the loss of can reducing friction of suitable L tube shell inner segment.Through research repeatedly, φ d2/ φ d2 '=110%～160% is proper, and is apparent in view to the lifting of COP.

Existing general reservoir L pipe φ d1=φ d1 '=14mm, reservoir L pipe φ d2=18mm, φ d2 '=14mm in this contrast test, test result is as follows:

Adopt the test result of the compressor of existing general reservoir: ability 2740W, COP3.04; Test data is under the situation of reservoir described in the utility model and this compressor is only changed: 2732W, and COP3.08, from the integrated testability result, compressor COP promotes 1.3%, and effect is obvious.

Claims

1. a compressor is made up of compressor case, motor, the pump housing and reservoir, the reservoir L pipe that includes housing and run through housing bottom in the housing wherein, and it is characterized in that: the internal diameter of the housing inner segment of described L pipe is greater than the internal diameter of the outer section of housing.

2. a kind of compressor according to claim 1 is characterized in that: the ratio of the outer section of the housing inner segment internal diameter of described L pipe and housing internal diameter is 110%～160%.

3. a kind of compressor according to claim 1 is characterized in that: the outer section of the housing inner segment of described L pipe and housing is made into integration.

4. a kind of compressor according to claim 1 is characterized in that: the outer section of the housing inner segment of described L pipe and housing is separately made and fuses.

5. a kind of compressor according to claim 4 is characterized in that: the upper end enlarging of the outer section of described L tube shell forms a transition shoulder socket and is fixed in outside the housing inner segment.

6. a kind of compressor according to claim 4 is characterized in that: the lower end enlarging of the housing inner segment of described L pipe forms a transition shoulder, and the outer section upper end enlarging of housing forms another transition shoulder and is socketed on just in the housing inner segment lower port.

7. a kind of compressor according to claim 4 is characterized in that: the transition shoulder width of the housing inner segment lower end enlarging of described L pipe is more than or equal to housing inner segment upper port thickness.

8. a kind of compressor according to claim 1 is characterized in that: the upper port of the housing inner segment of described L pipe is angle or flat mouth.

9. a kind of compressor according to claim 1 is characterized in that: described L pipe is provided with more than one or one.