CN101205909A - Coolant counterflow preventing unit for scroll compressor - Google Patents
Coolant counterflow preventing unit for scroll compressor Download PDFInfo
- Publication number
- CN101205909A CN101205909A CNA200610130457XA CN200610130457A CN101205909A CN 101205909 A CN101205909 A CN 101205909A CN A200610130457X A CNA200610130457X A CN A200610130457XA CN 200610130457 A CN200610130457 A CN 200610130457A CN 101205909 A CN101205909 A CN 101205909A
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- coolant
- refrigerant
- discharge tube
- scroll compressor
- preventing unit
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Abstract
The invention provides a device for preventing refrigerant from flowing backwards of a scroll compressor, which comprises a shell which forms a hermetic space inside, and forms a suction pipe for sucking the refrigerant and a discharge pipe for discharging the refrigerant; a fixing turbine disc which is provided with a spiral turbination and positioned in the hermetic space inside the shell; a moving turbine disc which is positioned in the hermetic space inside the shell, is provided with the spiral turbination, and is rotatablely combined with the fixing turbine disc and forms compression chambers; and a counter-flow preventing valve assembly which is arranged on a the discharge pipe or a refrigerant connecting pipe hermetically connected with the discharge pipe, opens or closes the inside of the discharge pipe according to the flow direction of the refrigerant discharged from the discharge pipe, and prevents the refrigerant from flowing backwards. The device for preventing counter-flow of the refrigerant of the scroll compressor can reduce the noise inside the scroll compressor when the refrigerant is discharged to a discharge chamber, reduce the discharge resistance of the refrigerant and reduce the pressure loss while preventing the discharged refrigerant from flowing backwards.
Description
Technical field
The invention belongs to the scroll compressor field, particularly relate to a kind of refrigerant that can prevent to discharge when press part flows backwards, can reduce scroll compressor inside with the refrigerant row noise when the discharge side, reduce refrigerant the discharge resistance, reduce the coolant counterflow preventing unit for scroll compressor of the pressure loss.
Background technique
Fig. 1 is the internal structure sectional arrangement drawing of prior art scroll compressor.As shown in Figure 1, scroll compressor has the shell 110 that forms enclosed space in inside, is housed in the press part 130 of shell 110 inside, compression refrigerant, is arranged on the inside of shell 110, the motor section 170 of power is provided to press part 130.
In a side of shell 110, be respectively equipped with the suction pipe 111 and the discharge tube 113 that can suck and discharge refrigerant.In the inside of shell 110, be respectively equipped with the upper frame 115 and the lower frame 117 that can support press part 130 and motor section 170 respectively.
In addition, at the upside of exhaust port 133, be the upside of static vortex disk 131, be provided with valving 144.When valving 144 moves at scroll compressor,, under the head pressure effect of refrigerant,, allow refrigerant arrange to discharge side (figure slightly) from compression chamber (figure omits) by open along with refrigerant passes through exhaust port 133 discharges.
In addition, when scroll compressor stopped, valving 144 sealing exhaust ports 133 prevented that coolant backflow from arriving compression chamber (figure slightly).
There are the following problems to have the prior art scroll compressor of said structure.Though the head pressure of refrigerant is by exhaust port 133 inner generations that are communicated with compression chamber (figure slightly), but because the refrigerant of discharging, there is certain internal pressure in the inside of discharge side (figure slightly), therefore scroll compressor operation or when stopping, being as the criterion with valving 144 produces pressure difference between compression chamber (figure slightly) and the discharge side (figure summary), makes that valving 144 trembles astatically, trigger noise.
In addition, because valving 144 is positioned at the top of static vortex disk 131, the refrigerant that 144 pairs of compression chambers of valving (figure slightly) are discharged directly produces resistance, causes the pressure loss.
Summary of the invention
The present invention provides a kind of coolant noise that can reduce row to scroll compressor inside discharge side for solving the technical problem that exists in the known technology, reduces the discharge resistance of refrigerant, reduces the coolant counterflow preventing unit for scroll compressor of the pressure loss.
The technological scheme that the present invention takes for the technical problem that exists in the solution known technology is:
Coolant counterflow preventing unit for scroll compressor of the present invention comprises: form enclosed space in inside, be formed with suction pipe that sucks refrigerant and the shell of discharging the discharge tube of refrigerant in the one side; Have spiral wrap, be positioned at the static vortex disk of the enclosed space of enclosure; Be positioned at the enclosed space of enclosure, have spiral wrap, rotatably combine, form the movable orbiting scroll of compression chamber with static vortex disk.Also comprise: be arranged on discharge tube or with coolant connecting tube that the discharge tube outer peripheral end is connected airtightly on, by the refrigerant flow direction of discharging by discharge tube, open or sealing discharge tube inside prevents the backflow-proof valve door assembly of coolant backflow.
The present invention can also adopt following technical measures:
Described backflow-proof valve door assembly comprises: form path in inside, so that allow refrigerant flow, be arranged on communicatively on discharge tube or the coolant connecting tube, have the casing of valve seat surface; One end is combined in a side of casing regularly, and the other end is with the contact of valve seat surface or separate the valve part of switching path.
Described casing has and discharge tube or the corresponding external diameter of coolant connecting tube internal diameter, is arranged on the some at least inboards in discharge tube or the coolant connecting tube with inserting.
Described backflow-proof valve door assembly is combined in some at least inner face one sides in discharge tube or the coolant connecting tube regularly by an end, and the other end constitutes with valve seat surface contact that is formed on discharge tube or coolant connecting tube inboard or the valve part that separates.
Described backflow-proof valve door assembly also is provided with sound-absorbing member on the valve seat surface that contacts with valve part.
Advantage and good effect that the present invention has are:
When coolant counterflow preventing unit for scroll compressor of the present invention is arranged to discharge side at refrigerant from the compressor of scroll compressor inside, can reduce compression chamber that valve part bears and the pressure difference between the discharge side, can reduce because unbalanced valve part vibration that causes of pressure and the noise that causes thus.
In addition, for the valve part of the refluence setting that prevents refrigerant is provided with mutually with exhaust port across a certain distance, the refrigerant that can avoid exhaust port to discharge directly is obstructed by valve part, can reduce the discharge resistance of refrigerant, can reduce the pressure loss.
In addition, the backflow-proof valve door assembly is arranged on discharge portion inside rather than static vortex disk, thereby can guarantee the discharge side inner space, can improve the inner space and utilize degree, and, can improve product design efficiency owing to need not consider the backflow-proof valve door assembly is arranged on the various design conditions of discharge side inside.
Description of drawings
Fig. 1 is the internal structure sectional arrangement drawing of prior art scroll compressor;
Fig. 2 to Fig. 6 is a coolant counterflow preventing unit for scroll compressor of the present invention;
Fig. 2 is the scroll compressor internal structure sectional arrangement drawing with coolant counterflow preventing unit of the present invention;
Fig. 3 is the A portion internal structure schematic representation of Fig. 2; Wherein:
Fig. 3 a is backflow-proof valve door assembly and discharge tube, coolant connecting tube coupled condition sectional drawing;
Fig. 3 b is a backflow-proof valve door assembly structural perspective;
Fig. 4 is a coolant counterflow preventing unit working state part sectional arrangement drawing of the present invention; Wherein:
Fig. 4 a is that refrigerant is arranged when system side coolant counterflow preventing unit working state sectional drawing;
Fig. 4 b is a refrigerant when flowing in the shell side direction, coolant counterflow preventing unit working state sectional drawing;
Fig. 5 is the longitudinal section schematic representation that sound-absorbing member is set on coolant counterflow preventing unit of the present invention;
Fig. 6 a is the sectional arrangement drawing of coolant counterflow preventing unit variant embodiment of the present invention;
Fig. 6 b is another embodiment's of a coolant counterflow preventing unit of the present invention sectional arrangement drawing.
＜accompanying drawing critical piece remarks 〉
110: shell 111: suction pipe
113: discharge tube 130: press part
131: static vortex disk 133: exhaust port
143: discharge cover 144: valving
144a: high pressure side 144b: low voltage side
161: movable orbiting scroll 176: oilhole
170: motor section 200: discharge portion
210: discharge tube 220: coolant connecting tube
221: step 230: pipe is tightly connected
232: the 2 pipes that are tightly connected of pipe were tightly connected in 231: the 1
240: refrigerant extends 250: the 2 coolant connecting tubes of connecting tube
300: backflow-proof valve door assembly 310: casing
311: valve seat surface 320: valve part
321: connecting part 322: switching portion
400: sound-absorbing member
Embodiment
It is following that the present invention will be described in detail with reference to drawings and Examples.
With reference to the accompanying drawings coolant counterflow preventing unit for scroll compressor of the present invention is described in detail.
Fig. 2 to Fig. 6 is a coolant counterflow preventing unit for scroll compressor of the present invention.Fig. 2 is the scroll compressor internal structure sectional arrangement drawing with coolant counterflow preventing unit of the present invention.Fig. 3 is the A portion cut-away view of Fig. 2; Fig. 3 a is backflow-proof valve door assembly and discharge tube, coolant connecting tube coupled condition sectional drawing; Fig. 3 b is a backflow-proof valve door assembly structural perspective;
As shown in Figures 2 and 3, the anti-locking apparatus portion of being included of scroll compressor refrigerant water conservancy diversion of the present invention forms enclosed space, is formed with suction pipe 111 that sucks refrigerant and the shell 110 of discharging the discharge portion 200 of refrigerant in a side of enclosed space; Have spiral wrap 132, be positioned at the static vortex disk 131 in shell 110 enclose inside spaces; Be positioned at the enclosed space of shell 110 inside, have spiral wrap 162, can combine, form the movable orbiting scroll 161 of compression chamber (figure slightly) with the relative rotation with static vortex disk 131; Be arranged on discharge tube 210 or with coolant connecting tube 220 that discharge tube 210 outer peripheral end are connected airtightly on, by the refrigerant flow direction of discharging, opening or sealing discharge tube 210 inside, prevent the backflow-proof valve door assembly 300 of coolant backflow by discharge tube 210.
Here, shown in Fig. 3 a, the discharge portion 200 that coolant counterflow preventing unit for scroll compressor of the present invention has is by the discharge tube 210 that penetratingly connects to shell 110 outsides from shell 110 inboards with extend the coolant connecting tube 220 that ground is provided with to shell 100 outsides and constitute.Discharge tube 210 and coolant connecting tube 220 are arranged on the opening portion of shell 110,, connect airtightly mutually in conjunction with the pipe 230 that is tightly connected of discharge tube 210 and coolant connecting tube 220 by airtightly.
Here, backflow-proof valve door assembly 300 is advisable with the structural module that is arranged on pipe 230 inboards that are tightly connected insertedly, particularly shown in Fig. 3 b, comprise that with inside a side, the other end that casing 310, one ends that are formed with path (figure slightly), can allow discharge tube 210 or coolant connecting tube 220 that refrigerant flows be provided with, have valve seat surface 311 communicatively are combined in casing 310 regularly be advisable with the valve part 320 that path is close to or separates, opened and closed to the valve seat surface 311 of casing 310.
Below, with reference to Fig. 4,5, the working principle of backflow-proof valve door assembly is described.
Fig. 4 is a coolant counterflow preventing unit working state part sectional arrangement drawing of the present invention; Fig. 4 a is that refrigerant is arranged when system side coolant counterflow preventing unit working state sectional drawing; Fig. 4 b is a refrigerant when flowing in the shell side direction, coolant counterflow preventing unit working state sectional drawing; Fig. 5 is the sectional arrangement drawing that sound-absorbing member is set on coolant counterflow preventing unit of the present invention.
As shown in Figure 4, coolant counterflow preventing unit for scroll compressor of the present invention, one end of its valve part 320 be combined in regularly casing 310 inner sides, the other end can with the valve seat surface 311 of casing 310 in conjunction with or separate, when refrigerant flows to shell 110 outsides by discharge tube 210, coolant connecting tube 220 and casing 310, as shown in Figure 4, the other end of valve part 320 is open, allows refrigerant row to system side.
When refrigerant flows by coolant connecting tube 220, discharge tube 210 and casing 310, when flowing in the shell 110 side direction, shown in Fig. 4 b, the other end of valve part 320 closely contacts with valve seat surface 311, sealing casing 310 inside, thus can prevent that refrigerant is to the inner refluence of scroll compressor.
Here, valve part 320 has thin-slab structure is advisable, and it is identical with common one-way valve working principle that valve part 320 is pressed the action that the flow direction of refrigerant opens and closes, so omit its detailed description.
Here, manage 230 in conjunction with being tightly connected of discharge tube 210 and coolant connecting tube 220 airtightly, comprise be arranged on the 1st of shell 100 opening portions be tightly connected pipe 231 and be arranged on the 1st be tightly connected pipe 231 inboards, insert the 2nd of backflow-proof valve door assembly 300 pipe 232 that is tightly connected in inside, be dual structure, have more stable air-tightness and be advisable.
For the pipe 230 that is tightly connected with said structure, because backflow-proof valve door assembly 300 is arranged on the 2nd with inserting and is tightly connected and manages 232 inside, can prevent that backflow-proof valve door assembly 300 is exposed on the external, can reduce because the malfunction of the backflow-proof valve door assembly 300 that external cause causes, breakage and the danger such as scroll compressor decreased performance of initiation thus.
Thereby, with the structure that can allow backflow-proof valve door assembly 300 and discharge tube 210 or coolant connecting tube 220 be provided with communicatively, constitute the casing 310 of backflow-proof valve door assembly 300, have and discharge tube 210 or the corresponding external diameter of coolant connecting tube 220 internal diameters, be advisable in the some at least inboards that are arranged in discharge tube 210 or the coolant connecting tube 220 with inserting.
Here, refrigerant flows by coolant connecting tube 220 and casing 310, and when side direction flowed in shell 110, shown in Fig. 4 b, the other end of valve part 320 closely contacted with valve seat surface 311.In order to reduce at this moment noise and the vibration that produces, as shown in Figure 5, the valve seat surface 311 that contacts with valve part 320 comprises that sound-absorbing member 400 is advisable.
In the top explanation, backflow-proof valve door assembly 300 has modular construction, is arranged on the some at least inboards in discharge tube 210 or the coolant connecting tube 220 with inserting.But the present invention is not subject to this structure, can be arranged on the inside of discharge tube 210 or coolant connecting tube 220 by the form of parts yet.Below, with reference to Fig. 6, this variation is described.
Fig. 6 a is a coolant counterflow preventing unit variant embodiment sectional arrangement drawing of the present invention; Fig. 6 b is another embodiment's of a coolant counterflow preventing unit of the present invention sectional arrangement drawing.
Shown in Fig. 6 a, the coolant counterflow preventing unit of variant embodiment of the present invention has the internal diameter greater than coolant connecting tube 220 internal diameters, is connected a side of coolant connecting tube 220 with extending.There is difference in internal diameters because coolant connecting tube 220 and refrigerant extend between the connecting tube 240, forms step 221.At step 221 positions, valve part 320 is set, the flow direction of pressing refrigerant opens and closes the inside of coolant connecting tube 220 and refrigerant extension connecting tube 240.
In addition, another embodiment of coolant counterflow preventing unit as the embodiment of the invention, shown in Fig. 6 b, the 2nd coolant connecting tube 250 that obtains after coolant connecting tube 220 distortion of Fig. 5, its inboard expansion by certain radius is formed step 221, at step 221 positions valve part is set, opens and closes the inside of the 2nd coolant connecting tube 250 and refrigerant extension connecting tube 240 by the flow direction of refrigerant.
Above, the coolant counterflow preventing unit variation of the embodiment of the invention is illustrated.But its variation is not subject to said structure, and its shape can be deformed into multiple shape.In addition, in the variant embodiment structure of coolant counterflow preventing unit, the noise and the vibration that produce when closely being contacted with the valve seat surface that constitutes by step 221 for the other end that reduces valve part 320, shown in Fig. 6 a and Fig. 6 b, can with step 221 that valve part 320 contacts on sound-absorbing member 400 is set.
As follows with the part description of above not talking about:
143: discharge cover 144a: the high pressure side
144b: low voltage side 176: oilhole
321: connecting part 322: switching portion
Above, most preferred embodiment of the present invention is illustrated.But the present invention is not subject to embodiment, can implement by the various forms shifting ground in claim and detailed description of the invention and accompanying drawing scope, and this also belongs to scope of the present invention.
Claims (5)
1. a coolant counterflow preventing unit for scroll compressor comprises: form enclosed space in inside, be formed with suction pipe that sucks refrigerant and the shell of discharging the discharge tube of refrigerant in the one side; Have spiral wrap, be positioned at the static vortex disk of the enclosed space of enclosure; Be positioned at the enclosed space of enclosure, have spiral wrap, rotatably combine, form the movable orbiting scroll of compression chamber with static vortex disk; It is characterized in that also comprising: be arranged on discharge tube or with coolant connecting tube that the discharge tube outer peripheral end is connected airtightly on, by the refrigerant flow direction of discharging by discharge tube, open or sealing discharge tube inside prevents the backflow-proof valve door assembly of coolant backflow.
2. coolant counterflow preventing unit for scroll compressor according to claim 1, it is characterized in that: the backflow-proof valve door assembly comprises: form path in inside, so that allow refrigerant flow, be arranged on communicatively on discharge tube or the coolant connecting tube, have the casing of valve seat surface; One end is combined in a side of casing regularly, and the other end is with the contact of valve seat surface or separate the valve part of switching path.
3. coolant counterflow preventing unit for scroll compressor according to claim 2 is characterized in that: casing has and discharge tube or the corresponding external diameter of coolant connecting tube internal diameter, is arranged on the some at least inboards in discharge tube or the coolant connecting tube with inserting.
4. coolant counterflow preventing unit for scroll compressor according to claim 1, it is characterized in that: the backflow-proof valve door assembly is combined in some at least inner face one sides in discharge tube or the coolant connecting tube regularly by an end, and the other end constitutes with valve seat surface contact that is formed on discharge tube or coolant connecting tube inboard or the valve part that separates.
5. according to a certain described coolant counterflow preventing unit for scroll compressor in the claim 2 to 4, it is characterized in that: the backflow-proof valve door assembly also is provided with sound-absorbing member on the valve seat surface that contacts with valve part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610130457XA CN101205909A (en) | 2006-12-20 | 2006-12-20 | Coolant counterflow preventing unit for scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610130457XA CN101205909A (en) | 2006-12-20 | 2006-12-20 | Coolant counterflow preventing unit for scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101205909A true CN101205909A (en) | 2008-06-25 |
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ID=39566321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610130457XA Pending CN101205909A (en) | 2006-12-20 | 2006-12-20 | Coolant counterflow preventing unit for scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101205909A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016347A (en) * | 2011-09-21 | 2013-04-03 | 株式会社丰田自动织机 | Motor-driven compressor |
-
2006
- 2006-12-20 CN CNA200610130457XA patent/CN101205909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016347A (en) * | 2011-09-21 | 2013-04-03 | 株式会社丰田自动织机 | Motor-driven compressor |
| US9482229B2 (en) | 2011-09-21 | 2016-11-01 | Kabushiki Kaisha Toyota Jidoshokki | Motor-driven compressor |
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Open date: 20080625 |