CN100465451C - Overheating prevention apparatus of vortex compressor - Google Patents
Overheating prevention apparatus of vortex compressor Download PDFInfo
- Publication number
- CN100465451C CN100465451C CNB2004100723990A CN200410072399A CN100465451C CN 100465451 C CN100465451 C CN 100465451C CN B2004100723990 A CNB2004100723990 A CN B2004100723990A CN 200410072399 A CN200410072399 A CN 200410072399A CN 100465451 C CN100465451 C CN 100465451C
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- temperature
- cold media
- media air
- cover cap
- reel
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Abstract
The invention discloses an overheat resistance device of vortex-type compressor, which comprises the following parts: fixation reel, rotary reel, activation motor, drainage cover and valve component, wherein the fixation reel is fixed in the compressor case; the rotary reel engages the fixation reel mutually to form double and continual moving compressing chamber; the activation motor is set in the case, which generates activation force to revolve the rotary reel; the drainage lid is sealed in the back of fixation reel to form drainage space; the valve component senses the temperature of coolant gas in the space; when the temperature of coolant gas exceeds certain temperature range, the valve component generates a cutting-off signal. The device simplifies the design and assemblage to reduce the preparing cost, which avoids the damage of sealing component other components due to overheat.
Description
Technical field
The invention relates to compressor, particularly a kind of over-temperature protection of scroll compressor.Relate in particular to direct sensing and discharge the temperature of gas, when discharging gas, directly stop the over-temperature protection of the scroll compressor of drive motor operation above proper temperature.The present invention utilizes simple valve mechanism, and sensing is discharged the temperature of the cold media air in the space, thereby can easily make valve mechanism and assembling whole compressor, can also reduce the relevant expense of making significantly.In addition, make the valve assembly body of sensing temperature directly touch the cold media air of discharging in the space, thereby can correctly sense temperature, when the temperature that prevents under specific temperature conditions to suck gas extremely descends, under the temperature conditions of projected working point, start.The compression temperature of cold media air exceeds the temperature range that sets and overheated the time in addition, can, correctly sense temperature with true temperature with not having deviation, promptly start the excess load circuit breaker, thereby prevent that effectively sealed member and other parts are damaged owing to crossing hot compression.
Background technique
In general, the effect of compressor is the compression energy that mechanical energy is converted to compressible fluid, generally is divided into reciprocal compressor, vane compressor, circle center type compressor and scroll compressor.
Scroll compressor is different with the straight-line reciprocal compressor that utilizes piston, but utilizes solid of rotation as circle center type compressor or vane compressor.Be specially, mesh a plurality of spools and when rotating mutually, when changing the volume of pressing chamber, suck and compression refrigerant gas after discharge again.In other words, utilize two vortex shape objects of combination, carry out compression by the fixing relative movement between spool and the spinning reel.Have high efficiency, low noise, characteristics such as small-sized and in light weight, be widely used in a plurality of fields such as domestic air conditioning or car air conditioner.
Fig. 1 is a prior art scroll compressor schematic representation; Fig. 2 is the detailed maps of " A " part among Fig. 1; Fig. 3 prevents the simplified diagram of structure and excess load circuit breaker relation for prior art high temperature.As shown in the figure, existing scroll compressor by shell 1, main frame 2 and sub-frame (not illustrating among the figure), drive motor 3, live axle 4, spinning reel 5, fixedly spool 6, reverse stop valve assembly body 7, discharge cover cap 8 and constitute, shell 1 has gas suction pipe SP and gas outlet pipe DP; Main frame 2 and sub-frame are separately fixed at the both sides up and down of shell 1 inwall; Drive motor 3 is installed between main frame 2 and the sub-frame; Live axle 4 is pressed into the center of drive motor 3, runs through main frame 2 and the rotating force of transmission drive motor 3; Spinning reel 5 is combined in live axle 4 and is arranged on the upside of main frame 2; Fixedly spool 6 is combined in spinning reel 5 and is fixed on the upside of main frame 2, forms a plurality of pressing chambers; Reverse stop valve assembly body 7 is combined in the fixedly spool 6 hardboard portion back sides, and its effect is the adverse current that prevents to discharge cold media air; Discharge cover cap 8 and be combined in fixedly spool 6 back sides, shell 1 internal separation is suction pressure field and discharge pressure field.
Above-mentioned spinning reel 5 and fixedly between the spool 6, crimping (rap) 5a, 6a that a plurality of pressing chamber P are divided in pairs form with involute (involute) shape respectively.And in order to prevent that cold media air from leaking between the hardboard portion on each crimping 5a, 6a opposite, thereby insert sealed member 5b, the 6b that forms in conjunction with involute shape at each crimping 5a, 6a front-end face.
In addition, fixedly be formed with the bypass opening 6c that is connected with the suction side of shell 1 in the hardboard portion of spool 6, when the temperature of discharging gas surpassed uniform temperature, cold media air started the excess load circuit breaker (OLP of the stator 3A upper end that is arranged on drive motor 3 to the suction side discharge; Over LoadProtector) 9.As shown in Figure 2, thermal switch (thermalswitch) 6d is installed on the inlet of bypass opening 6c, thermal switch 6d has utilized bimetal to make, and is unlocked when the temperature of discharging gas surpasses uniform temperature.Not having the picture in picture 3B of explanation is rotor.
The following describes the course of action of aforesaid prior art scroll compressor.
Along with applying power supply, when live axle 4 rotated with drive motor 3, spinning reel 5 rotated to eccentric distance.Meanwhile spinning reel 5 and the fixedly a plurality of pressing chamber P of formation between crimping 5a, the 6a between the spool 6.Pressing chamber P along with spinning reel 5 continue rotatablely move and move to the center, and then suck when reducing volume, discharge again behind the compression refrigerant gas.And this a succession of process repeatedly.
At this moment, when the temperature of eliminating gas rises to certain temperature range, open bypass opening 6c when starting thermal switch 6d, reveal and flow into the suction side of shell 1 by the part of bypass opening 6c cold media air owing to the temperature that is discharged to the cold media air of discharging cover cap 8 inboards.The cold media air that flows into the condition of high temperature of suction side starts the excess load circuit breaker 9 that is arranged on stator 3A upper end, thereby breaks off being applied to the power supply of drive motor 3, stops the operation of compressor.
But in the over-temperature protection of aforesaid existing scroll compressor, as shown in Figure 3, the part in the cold media air of being discharged is revealed and startup excess load circuit breaker 9 to the suction side of shell 1.And break off thus supplying to drive motor 3, stop the operation of compressor.Because prior art has adopted this so-called ' control mode indirectly ', so the actuation time of thermal switch 6d, the cold media air that is leaked are from discharging the time of cover cap 8 arrival excess load circuit breakers 9, and the actuation time of the excess load circuit breaker 9 that starts of the heat back that senses cold media air etc., all delay the time to a certain degree in each process, so increased the whole needed time that prevents overheat of compressor on the whole, may make component such as sealed member because the pressurized gas of high heat has the worry that is carbonized.
Summary of the invention
Technical problem to be solved by this invention is, a kind of over-temperature protection of scroll compressor is provided, the present invention utilizes simple valve mechanism, sensing is discharged the temperature of the cold media air in the space, thereby can easily make valve mechanism and assembling whole compressor, can also reduce the relevant expense of making significantly.In addition, make the valve assembly body of sensing temperature directly touch the cold media air of discharging in the space, thereby can correctly sense temperature, when the temperature that prevents under specific temperature conditions to suck gas extremely descends, under the temperature conditions of projected working point, start.The compression temperature of cold media air exceeds the temperature range that sets and overheated the time in addition, can, correctly sense temperature with true temperature with not having deviation, promptly start the excess load circuit breaker, thereby prevent that effectively sealed member and other parts are damaged owing to crossing hot compression.
To achieve these goals, the technical solution used in the present invention is: the over-temperature protection of scroll compressor comprises fixedly spool, spinning reel, drive motor, discharge cover cap, the valve assembly body constitutes, described fixedly spool is fixedly installed on compressor case inside, described spinning reel and fixedly spool be meshing with each other and be formed into when rotating two, mobile continuously pressing chamber, described drive motor is arranged on enclosure, and the driving force of the spinning reel that rotates, described discharge cover cap forms discharges the space and seals on the back side that is arranged on fixing spool, it is characterized in that, after described valve assembly body sensing is discharged the temperature of cold media air in the space, when surpassing certain temperature range, the temperature of cold media air produces the power supply signal that opens circuit.
Above-mentioned valve assembly body is made of electron tube, valve mover, switch, described electron tube is fixed on the inboard of discharging cover cap, contact with the cold media air that is discharged to the discharge cover cap on the overall appearance, and inside fills a certain amount of fluid, described valve mover slidably and can be combined in above-mentioned electron tube inside movably, described switch senses is along with cold media air rises to setting temperature when above and behind the mobile valve mover, transmit break signal to the excess load circuit breaker.
The phase change of the fluid that above-mentioned valve mover holds according to inside slidably.
Beneficial effect of the present invention, over-temperature protection according to scroll compressor of the present invention, the temperature of can sensing discharging the cold media air in the space with easy valve mechanism, thereby make that the manufacturing of valve mechanism and whole compressor assembling are easy, and the relevant expense of more enough remarkable reduction manufacturings.
In addition, in the over-temperature protection according to scroll compressor of the present invention, valve assembling body can directly contact with the cold media air in discharging cover cap and correctly sense temperature, thus under the specific run condition, when temperature drops to extremely low the time, can prevent under the temperature conditions higher, to start than the start-up point.So the compression temperature of cold media air exceeds the temperature range that sets overheated the time, can correctly sense, and promptly start the excess load circuit breaker, thereby can prevent effectively that sealed member and miscellaneous part are subjected to scaling loss owing to crossing hot compression.
Description of drawings
Fig. 1 is a prior art scroll compressor schematic representation.
Fig. 2 is the detailed maps of " A " part among Fig. 1.
Fig. 3 prevents the simplified diagram of the relation of structure and excess load circuit breaker for existing high temperature.
Fig. 4 is the generalized section of the over-temperature protection of scroll compressor of the present invention.
Fig. 5 is the simplified diagram of working state of the valve assembly body of corresponding refrigerant temperature among Fig. 4.
Among the figure:
1: shell 2: main frame
3: drive motor 3A: stator
4: live axle 5: spinning reel
6: fixedly spool 8: discharge cover cap
9: excess load circuit breaker 10: the valve assembly body
11: electron tube (valve tube) 12: valve mover
13: switch
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 4 is the generalized section of the over-temperature protection of scroll compressor of the present invention; Fig. 5 is the simplified diagram of working state of the valve assembly body of the corresponding refrigerant temperature among Fig. 4.As shown in the figure, scroll compressor of the present invention by shell 1, upper frame 2 and lower frame, drive motor 3, live axle 4, spinning reel 5, fixedly spool 6, discharge cover cap 8, valve assembly body 10, excess load circuit breaker (OLP) 9 and constitute, upper frame 2 and lower frame are fixed on shell 1 inside; Drive motor 3 is installed between upper frame 2 and the lower frame; Live axle 4 is pressed on the rotor 3B of drive motor 3, runs through upper frame 2; Spinning reel 5 is combined in the upper end of live axle 4 and rotates; Fixedly spool 6 is engaged on spinning reel 5, and a plurality of pressing chamber P of fixing formation; Discharge cover cap 8 and be combined in fixedly spool 6, its inside has a certain size discharge space; Valve assembly body 10 is combined in the inboard of discharging cover cap 8, and sensing is discharged to the temperature of the cold media air of discharging cover cap 8 inside from pressing chamber P; Excess load circuit breaker (OLP) 9 is connected on the valve assembly body 10 in the mode of conduction, the power supply of the drive motor 3 that opens circuit when the temperature of cold media air surpasses certain temperature range.
The following describes the action effect of the over-temperature protection of aforesaid scroll compressor of the present invention.
After applying power supply on the drive motor 3, spinning reel 5 rotates to eccentric distance in the time of live axle 4 rotations.And through the action in relevant therewith some stages and a succession of process of suction/compression repeatedly/discharge cold media air.
Cold media air pressing chamber P be discharged to discharge cover cap 8 after, then be discharged to condenser in the freezing cycle device by gas outlet pipe DP.Be arranged on the present temperature that valve assembly body 10 direct sensing of discharging cover cap 8 inboards arrive the cold media air of discharging to discharge cover cap 8 this moment, and the mutual relatively temperature and the predefined temperature value of this cold media air that senses, when present refrigerant temperature is higher than setting temperature, directly transmit break signal by signaling line (not illustrating among the figure) to excess load circuit breaker 9, and break off supplying to the power supply of drive motor 3, thereby stop the operation of compressor.
Above-mentioned valve assembly body 10 is made of electron tube 11, valve mover 12, switch 13, and electron tube 11 is fixed on the inboard of discharging cover cap 8, contact with being discharged to the cold media air of discharging cover cap 8 on the overall appearance, and inside fills a certain amount of fluid; Valve mover 12 slidably and can be combined in electron tube 11 inside movably; Switch 13 sensings are along with cold media air rises to setting temperature when above, and behind the mobile valve mover 12, transmit break signals to excess load circuit breaker 9.
Above-mentioned valve mover 12 along with the direct contacting electronic pipe of cold media air 11 in temperature rise and move, this is that generation liquid-vapor phase change (liquid-vapor phase change) causes because liquid (liquid) fluids (fluid) in the electron tube 11 are heated to boiling point when above.Promptly, in the over-temperature protection according to scroll compressor of the present invention, start according to phase change, and transmitting the valve assembly body 10 of break signals to excess load circuit breaker 9 directly contacts with cold media air in the discharge cover cap and senses temperature, suck under the environment of gases affect thereby can discharge fully, can sense the temperature of discharging the definite cold media air in the cover cap being broken off fully aspect the heat.Thus under the specific run condition,, can prevent under the temperature conditions higher, to start than the start-up point when temperature drops to extremely low the time.
Claims (2)
1. the over-temperature protection of a scroll compressor, comprise fixedly spool, spinning reel, drive motor, discharge cover cap, the valve assembly body, described fixedly spool is fixedly installed on compressor case inside, described spinning reel and fixedly spool be meshing with each other and be formed into when rotating two, mobile continuously pressing chamber, described drive motor is arranged on enclosure, and the driving force of the spinning reel that rotates, described discharge cover cap forms discharges the space and seals on the back side that is arranged on fixing spool, it is characterized in that, after described valve assembly body sensing is discharged the temperature of cold media air in the space, when surpassing certain temperature range, the temperature of cold media air produces the power supply signal that opens circuit, described valve assembly body is by electron tube, the valve mover, switch constitutes, described electron tube is fixed on the inboard of discharging cover cap, contact with the cold media air that is discharged to the discharge cover cap on the overall appearance, and inside fills a certain amount of fluid, described valve mover slidably, and can be combined in above-mentioned electron tube inside movably, described switch senses is along with cold media air rises to setting temperature when above and behind the mobile valve mover, transmit break signal to the excess load circuit breaker.
2. the over-temperature protection of scroll compressor according to claim 1 is characterized in that, the phase change of the fluid that above-mentioned valve mover holds according to inside slidably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100723990A CN100465451C (en) | 2004-10-27 | 2004-10-27 | Overheating prevention apparatus of vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100723990A CN100465451C (en) | 2004-10-27 | 2004-10-27 | Overheating prevention apparatus of vortex compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766339A CN1766339A (en) | 2006-05-03 |
| CN100465451C true CN100465451C (en) | 2009-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100723990A Expired - Fee Related CN100465451C (en) | 2004-10-27 | 2004-10-27 | Overheating prevention apparatus of vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100465451C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242278B (en) * | 2020-12-07 | 2021-04-20 | 胡海明 | Overheating prevention type electron tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05149272A (en) * | 1991-11-26 | 1993-06-15 | Mitsubishi Heavy Ind Ltd | Scroll type compressor |
| US5503542A (en) * | 1995-01-13 | 1996-04-02 | Copeland Corporation | Compressor assembly with welded IPR valve |
| JPH10220382A (en) * | 1997-02-05 | 1998-08-18 | Sanyo Electric Co Ltd | Scroll compressor |
| CN1290816A (en) * | 1999-10-04 | 2001-04-11 | Lg电子株式会社 | Overheat protector for whirl compressor |
| US6287089B1 (en) * | 1999-11-29 | 2001-09-11 | Scroll Technologies | Scroll compressor with heat shield |
| CN1506586A (en) * | 2002-12-13 | 2004-06-23 | Lg������ʽ���� | Vortex type compressor |
-
2004
- 2004-10-27 CN CNB2004100723990A patent/CN100465451C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05149272A (en) * | 1991-11-26 | 1993-06-15 | Mitsubishi Heavy Ind Ltd | Scroll type compressor |
| US5503542A (en) * | 1995-01-13 | 1996-04-02 | Copeland Corporation | Compressor assembly with welded IPR valve |
| JPH10220382A (en) * | 1997-02-05 | 1998-08-18 | Sanyo Electric Co Ltd | Scroll compressor |
| CN1290816A (en) * | 1999-10-04 | 2001-04-11 | Lg电子株式会社 | Overheat protector for whirl compressor |
| US6287089B1 (en) * | 1999-11-29 | 2001-09-11 | Scroll Technologies | Scroll compressor with heat shield |
| CN1506586A (en) * | 2002-12-13 | 2004-06-23 | Lg������ʽ���� | Vortex type compressor |
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| Publication number | Publication date |
|---|---|
| CN1766339A (en) | 2006-05-03 |
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| C06 | Publication | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20111027 |