CN100434712C - Antileaking structure for refrigerant gas for closed-compressor - Google Patents
Antileaking structure for refrigerant gas for closed-compressor Download PDFInfo
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- CN100434712C CN100434712C CNB2004100195114A CN200410019511A CN100434712C CN 100434712 C CN100434712 C CN 100434712C CN B2004100195114 A CNB2004100195114 A CN B2004100195114A CN 200410019511 A CN200410019511 A CN 200410019511A CN 100434712 C CN100434712 C CN 100434712C
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Abstract
The present invention relates to a cooling medium gas leakage preventing structure of a hermetic compressor, which comprises a compressor composed of a cylinder, bearing panels, a rotating shaft and baffle plates, wherein the cylinder has an inner space; the bearing panels are respectively connected to one side of each of an upper opening part and a lower opening part of the cylinder; the rotating shaft has a shaft part, a bearing part and a dividing plate, the shaft part penetrates through the bearing panels and is supported in a radical direction, the bearing part supports on the bearing panels in a shaft direction, the peripheral surface of the bearing part is extended to form the dividing plate, and the dividing plate causes the inner space of the cylinder into a plurality of sealed spaces. The baffle plates are stuck and pressed on the upper side and the lower side of the dividing plate of the rotating shaft, and the baffle plates move back and forth from top to bottom to cause each inner space to be alternatively changed into a suction space and a compressing space. A suction opening is formed at one lateral surface of the cylinder, is mutually connected with a gas suction pipe, and is communicated with the spaces. A cooling medium gas cutting off part is formed on the suction opening in a cylinder direction.
Description
Technical field
The present invention relates to a kind of gaseous refrigerant leakage preventing structure of closed compressor.
Background technique
Common closed compressor is by sucking space and compression volume the sticking inner space of cylinder being distinguished into after pressing baffle plate on the solid of rotation.The continuity alternation sucks space and compression volume by rotating solid of rotation simultaneously, thereby carries out the operations such as suction, compression, discharge of refrigerant.
As shown in Figure 1, traditional compressor comprise the motor component that is provided with for the interior upside at shell 1 produces power substantially and be connected on the above-mentioned motor component and suck gas and the compression member of compressing discharge constitutes.Compression member is made of cylinder 2, clutch shaft bearing panel 3A, the second bearing panel 3B, running shaft 4, the first baffle plate 5A, second baffle 5B, baffle plate spring 6.Wherein, cylinder 2 is fixed on the Lower Half of shell 1, and possesses the inner space V that is used for compression refrigerant gas; The clutch shaft bearing panel 3A and the second bearing panel 3B be installed in separately cylinder 2 top and below; The power of electrical components is delivered on the compression member by running shaft 4.And this running shaft 4 possesses dividing plate 4C, and the inner space V of cylinder in-block is divided into the several sealed space by dividing plate 4C; The first baffle plate 5A and second baffle 5B contact the both sides at running shaft 4 dividing plate 4C separately.Under the starting state of above-mentioned running shaft 4, each seal space S1, S2 are convertible under the effect of the first baffle plate 5A and second baffle 5B and suck space and compression volume; Baffle plate spring 6 plays elastic force support effect to each baffle plate 5A, 5B.
Running shaft 4 comprises that axial region 4A, the 4B of bearing portion, dividing plate 4C constitute.Wherein, the axial region 4A that is used for transferring power is connected the rotor figure summary of electrical components, and the clutch shaft bearing panel 3A and the second bearing panel 3B are through this axial region 4A simultaneously; Lower Half at axial region 4A prolongs the formation bearing 4B of portion to radial direction.The 4B of this bearing portion contacts smoothly on the pivot bearing surface simultaneously; On the peripheral surface of the 4B of bearing portion, prolong and form dividing plate 4C.This dividing plate 4C is divided into first space S 1 and second space S 2 with the inner space V of cylinder in-block.On axial region 4A, run through and form lubricating oil flow path 4a.The lubricant oil that shell is 1 li is drawn into axial region 4A inside by this lubricating oil flow path 4a.It is concentric that the 4B of bearing portion and axial region 4A have, and with dividing plate 4C during as the center, and the dividing plate 4C diameter of above-mentioned two parts of both sides up and down is symmetrical.From the shape of the plane projection of above-mentioned dividing plate 4C is circular plate shape.At this moment, the inner peripheral surface of the peripheral surface of this dividing plate 4C and cylinder 2 is in contact with one another.When two sides of above-mentioned dividing plate 4C were launched, the thickness from the inner peripheral surface to the peripheral surface was identical.
The running of the existing closed compressor of said structure is as follows.
The rotor (not shown) was rotated after motor inserted power supply; The running shaft 4 that is combined on the rotor (not shown) rotates simultaneously, contact each baffle plate 5A, 5B on the both sides about dividing plate 4C carries out rightabout back and forth movement up and down along the height direction of dividing plate 4C, and changes the 1st space S 1 of cylinder in-block and the volume of the 2nd space S 2 thus; Refrigerant is drawn in the 1st space S 1 and the 2nd space S 2 repeatedly by gas suction pipe SP.After then little by little being compressed, discharge from the both sides projected curved surface arrival of above-mentioned dividing plate 4C till the moment to the moment of process exhaust port (not shown) of starting point, replace discharge by each exhaust port.Illustrate in greater detail the process that cold media air is inhaled into here.Dividing plate 4C is divided into two parts as the center with suction port 2a.Wherein a side and the first seal space S1 link together, and the opposite side and the second seal space S2 link together.Along with the rotation of dividing plate 4C, the volume of each space S 1, S2 changes, and then cold media air can be drawn in each space S 1, the S2 repeatedly.
But, in the existing closed compressor, the problem that the inequality and cold media air of each spatial volume leaks appears.Promptly as shown in Figure 3, the first seal space S1 is used to carry out compression section, and the second seal space S2 is used to carry out inhalation process.At this moment, dividing plate 4C slightly is partial to the first seal space S1, one side in the Centromedian position of suction port, so cold media air leaks into the second seal space S2 by suction port 2a from the first seal space S1.Comparatively speaking, the first seal space S1 is a high-pressure section, and the second seal space S2 is a low-pressure section.
Summary of the invention
In order to overcome the shortcoming that there is coolant leakage in existing compressor, the invention provides a kind of leakage-proof structure that can prevent the closed compressor cold media air that cold media air leaks, leak into low-voltage space to prevent cold media air by suction port.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of gaseous refrigerant leakage preventing structure of closed compressor, described sealed type compression comprises cylinder, bearing panel, running shaft and baffle plate, cylinder possesses the inner space, and open its both sides up and down, several bearing panel are connected upper and lower opening portion one side of described cylinder separately, running shaft possesses axial region, bearing portion, dividing plate, axial region runs through described bearing panel, and this axial region is from radially being supported, prolong formation bearing portion from axial region, and this bearing portion is supported on the described bearing panel from axle direction; The peripheral surface of bearing portion prolongs and forms dividing plate, this dividing plate is divided into the several sealed space with the inner space of cylinder, several baffle plates are sticking to be pressed in the running shaft dividing plate up and down on the both sides, when this baffle plate moves up and down each inner space checker is become to suck space and compression volume; It is characterized in that form suction port in a side of cylinder, this suction port and gas suction pipe interconnect, and with several spatial communication; In the shut off gas portion that form to cut off cold media air on this suction port on the axial direction of cylinder.
The gaseous refrigerant leakage preventing structure of aforesaid closed compressor, wherein shut off gas portion is formed on the middle position of suction port, and therefore first suction port that forms with the existence of shut off gas portion and the section area of second suction port are identical.
The gaseous refrigerant leakage preventing structure of aforesaid closed compressor, wherein the inner peripheral surface of shut off gas portion tilts to cylindrical center's direction.
The gaseous refrigerant leakage preventing structure of aforesaid closed compressor, wherein the cylinder axis direction width of shut off gas portion is not less than running shaft dividing plate thickness.
The gaseous refrigerant leakage preventing structure of aforesaid closed compressor, wherein the cylinder direction both sides of suction port inner peripheral surface be recessed to form the gas lead-in groove to vertical wiring direction with certain depth.
The gaseous refrigerant leakage preventing structure of aforesaid closed compressor, wherein the cylinder direction one side inner peripheral surface of suction port be recessed to form the gas lead-in groove to vertical wiring direction with certain depth.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
The generalized section of the part-structure of the existing closed compressor of Fig. 1.
The exploded perspective schematic representation of compressor portion in the existing closed compressor of Fig. 2.
Fig. 3 is that the suction port cold media air on every side of the compressor portion of existing closed compressor flows to sketch
Fig. 4 is the exploded perspective schematic representation at compressor position in the closed compressor of the present invention
Fig. 5 is the sectional view that the I-I line in Fig. 4 is done
Fig. 6 is that cold media air flows to sketch in the compressor portion of closed compressor of the present invention around suction port
Fig. 7 is the outside front view from the lining of suction port in the closed compressor of the embodiment of the invention
Fig. 8 is the outside front view from the lining of suction port in the closed compressor of another embodiment of the present invention
The number in the figure explanation:
3A, 3B: the first, the second bearing panel 4: running shaft
4A: axial region 4B: bearing portion
4C: dividing plate 5A, 5B: the first, second baffle
10: cylinder 11: suction port
12: shut off gas portion 13: the gas lead-in groove
Embodiment
Below, the preferred embodiment of the leakage-proof structure of the cold media air of the closed compressor that present invention will be described in detail with reference to the accompanying.Structure of the present invention part same as the prior art adopts identical label.
As shown in Figure 4, compression member of the present invention is made of cylinder 10, clutch shaft bearing panel 3A, the second bearing panel 3B, running shaft 4, the first baffle plate 5A, second baffle 5B, baffle plate spring 6.Wherein, circular cylinder 10 is fixed on the Lower Half of shell (shown in Fig. 1) 1, and its inside possesses the inner space V that is used for compression refrigerant gas; The clutch shaft bearing panel 3A and the second bearing panel 3B be installed in separately cylinder 10 top and below, and form cylinder in-block; The power of electrical components is delivered on the compression member by running shaft 4.And this running shaft 4 possesses dividing plate 4C, and the inner space V of cylinder in-block is divided into the several sealed space by dividing plate 4C; The first baffle plate 5A and second baffle 5B contact the both sides at running shaft 4 dividing plate 4C separately.Under the rotary state of above-mentioned running shaft 4, each seal space S1, S2 can alternately convert under the effect of the first baffle plate 5A and second baffle 5B and suck space and compression volume; Baffle plate spring 6 plays elastic force support effect to each baffle plate 5A, 5B.
Side at this cylinder 10 forms a suction port 11.Above-mentioned suction port 11 interconnects with gas suction pipe (shown in Fig. 1) SP, connects mutually with several sealed space S 1, S2 simultaneously.The diameter of above-mentioned suction port 11 is greater than the thickness of above-mentioned running shaft 4 dividing plate 4C.When observing the medium position of suction port 11, be formed on this position with the shut off gas portion 12 that axle direction separates first 11a of suction portion and second 11b of suction portion to the cylinder direction in inside.During design shut off gas portion 12, preferred design becomes the not little running shaft 4 dividing plate 4C thickness of its width.Help preventing the leakage of cold media air like this.Also have the inner peripheral surface of shut off gas portion 12 preferably to tend to axial center line, help the smooth suction of cold media air like this.
As shown in Figure 7, be axle direction in the left and right sides of suction port 11 and form gas lead-in groove 13 with certain depth in wiring direction inboard.Can remedy the area of the suction port 11 that diminishes because of above-mentioned gas cut-out portion 12 like this.Thereby realize that cold media air can successfully suck into.As shown in Figure 8, gas lead-in groove 13 width can also be set as original half in another case.In this case, with the front upper side of dividing plate 4C inner peripheral surface, and to form gas lead-in groove 13 on the position from axial middle position to the opposite wiring, help keeping the compression starting point like this corresponding to cylinder 10 according to the sense of rotation of dividing plate 4C.For cover the top of cylinder 2 and below, bearing panel 3A, 3B are designed to circular plate shape.Running shaft 4 is made of axial region 4A, the 4B of bearing portion, dividing plate 4C.Wherein, the axial region 4A that is used for transferring power is connected the rotor (not shown) of electrical components, and the clutch shaft bearing panel 3A and the second bearing panel 3B are through this axial region 4A simultaneously; Lower Half at axial region 4A prolongs the formation bearing 4B of portion with radial direction.The 4B of this bearing portion touches on the pivot bearing surface along slipping simultaneously; On the peripheral surface of the 4B of bearing portion, prolong and form dividing plate 4C.This dividing plate 4C is divided into first space S 1 and second space S 2 with the inner space V of cylinder in-block.During here two side vertical incisions of above-mentioned dividing plate 4C, the thickness from the inner peripheral surface to the peripheral surface is identical.In the accompanying drawings, the part identical with existing closed compressor used identical label in the leakage-proof structure of the cold media air of closed compressor of the present invention.
The running of the closed compressor provided by the invention of said structure is as follows.
Motor connecting power. rotor (not shown) and running shaft 4 are rotated simultaneously, contact running shaft 4 dividing plate 4C up and down each baffle plate 5A, the 5B on the both sides carry out rightabout back and forth movement up and down along the height curved surface of dividing plate 4C, and change the volume of the 1st space S 1 and the 2nd space S 2 thus.At this moment refrigerant is drawn in the 1st space S 1 and the 2nd space S 2 continuously by gas suction pipe SP.After being compressed, above-mentioned refrigerant little by little discharges operation.
Here, the first seal space S1 is used to carry out compression section, and the second seal space S2 is used to carry out inhalation process.At this moment, produce the poor of pressure between the first seal space S1 and the second seal space S2.Therefore cold media air may leak in the second seal space S2 of relatively low pressure from the first seal space S1 of relatively high pressure.But the above-mentioned cold media air that leaks to the second seal space S2 is under the effect of the shut off gas portion 12 that is formed on suction port 11 middle parts with the cylinder direction, can not leak to the second seal space S2, promptly remain in the first seal space S1, and be compressed and be discharged from when moving along with running shaft 4 dividing plate 4C.In addition, the suction port 11 at cylinder 10 forms gas lead-in groove 13 with axle direction.Can strengthen the real area of suction port 11 like this and refrigerant can successfully be inhaled into into.
Can prevent effectively that like this cold media air from passing through the phenomenon that other seal space leaks.Promptly prevent because of the phenomenon of the pressure official post cold media air between other seal space by other seal space leakage.Simultaneously can prevent to reduce the phenomenon of compressor efficiency because of the suction deficiency or the expanding again of cold media air of cold media air in advance.
The effect of invention
The leakage-proof structure of the cold media gas of closed compressor of the present invention forms suction in a side of cylinder Entrance, this suction inlet and gas suction pipe interconnect, and are communicated with one with several spaces Rise. Also have on this suction inlet and form the shut off gas section that cuts off cold media gas with the cylinder direction. So not Only can prevent because the pressure differential between the seal cavity makes cold media gas by the phenomenon of suction inlet leakage, But also can prevent again swelling of the suction deficiency of cold media gas or cold media gas, finally improve compression The efficient of machine.
Claims (6)
1, a kind of gaseous refrigerant leakage preventing structure of closed compressor, described closed compressor comprises cylinder, bearing panel, running shaft and baffle plate, cylinder possesses the inner space, and open its both sides up and down, several bearing panel are connected upper and lower opening portion one side of described cylinder separately, running shaft possesses axial region, bearing portion, dividing plate, axial region runs through described bearing panel, and this axial region is from radially being supported, prolong formation bearing portion from axial region, and this bearing portion is supported on the described bearing panel from axle direction; The peripheral surface of bearing portion prolongs and forms dividing plate, this dividing plate is divided into the several sealed space with the inner space of cylinder, several baffle plates are sticking to be pressed in the running shaft dividing plate up and down on the both sides, when this baffle plate moves up and down each inner space checker is become to suck space and compression volume; It is characterized in that form suction port in a side of cylinder, this suction port and gas suction pipe interconnect, and with several spatial communication; In the shut off gas portion that form to cut off cold media air on this suction port on the axial direction of cylinder.
2, the gaseous refrigerant leakage preventing structure of closed compressor according to claim 1, it is characterized in that shut off gas portion is formed on the middle position of suction port, therefore first suction port that forms with the existence of shut off gas portion and the section area of second suction port are identical.
3, the gaseous refrigerant leakage preventing structure of closed compressor according to claim 2 is characterized in that the inner peripheral surface of shut off gas portion tilts to cylindrical center's direction.
4, the gaseous refrigerant leakage preventing structure of closed compressor according to claim 1 is characterized in that the cylinder axis direction width of shut off gas portion is not less than running shaft dividing plate thickness.
5, according to the gaseous refrigerant leakage preventing structure of claim 1 or 2 or 3 or 4 described closed compressors, it is characterized in that the cylinder direction both sides of suction port inner peripheral surface be recessed to form the gas lead-in groove to vertical wiring direction with certain depth.
6, according to the gaseous refrigerant leakage preventing structure of claim 1 or 2 or 3 or 4 described closed compressors, it is characterized in that the cylinder direction one side inner peripheral surface of suction port be recessed to form the gas lead-in groove to vertical wiring direction with certain depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100195114A CN100434712C (en) | 2004-06-09 | 2004-06-09 | Antileaking structure for refrigerant gas for closed-compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100195114A CN100434712C (en) | 2004-06-09 | 2004-06-09 | Antileaking structure for refrigerant gas for closed-compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1707111A CN1707111A (en) | 2005-12-14 |
| CN100434712C true CN100434712C (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100195114A Expired - Fee Related CN100434712C (en) | 2004-06-09 | 2004-06-09 | Antileaking structure for refrigerant gas for closed-compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100434712C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093408A (en) * | 1976-12-03 | 1978-06-06 | Yoshichika Yamaguchi | Positive cam type compressor |
| JPH0763175A (en) * | 1993-08-25 | 1995-03-07 | Kobe Steel Ltd | Scroll compressor |
| JP2002021752A (en) * | 2000-07-05 | 2002-01-23 | Fujitsu General Ltd | Scroll compressor |
| US20030138340A1 (en) * | 2001-06-04 | 2003-07-24 | Young-Jong Kim | Cylinder assembly of compressor |
| CN1451867A (en) * | 2002-04-15 | 2003-10-29 | 乐金电子(天津)电器有限公司 | Sealed compressor partition plate structure |
-
2004
- 2004-06-09 CN CNB2004100195114A patent/CN100434712C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093408A (en) * | 1976-12-03 | 1978-06-06 | Yoshichika Yamaguchi | Positive cam type compressor |
| JPH0763175A (en) * | 1993-08-25 | 1995-03-07 | Kobe Steel Ltd | Scroll compressor |
| JP2002021752A (en) * | 2000-07-05 | 2002-01-23 | Fujitsu General Ltd | Scroll compressor |
| US20030138340A1 (en) * | 2001-06-04 | 2003-07-24 | Young-Jong Kim | Cylinder assembly of compressor |
| CN1451867A (en) * | 2002-04-15 | 2003-10-29 | 乐金电子(天津)电器有限公司 | Sealed compressor partition plate structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1707111A (en) | 2005-12-14 |
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Granted publication date: 20081119 |