CN100570240C - Cold accumulator type refrigeration machine - Google Patents
Cold accumulator type refrigeration machine Download PDFInfo
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- CN100570240C CN100570240C CNB2006101321151A CN200610132115A CN100570240C CN 100570240 C CN100570240 C CN 100570240C CN B2006101321151 A CNB2006101321151 A CN B2006101321151A CN 200610132115 A CN200610132115 A CN 200610132115A CN 100570240 C CN100570240 C CN 100570240C
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Abstract
The purpose of this invention is to provide to have moderately to regulate and be used for valve body is connected airtight the cold accumulator type refrigeration machine of the revolving valve of the pushing force on valve plate.Compressor (1) will move fluid compression.Revolving valve (RV) is arranged between compressor (1) and the cylinder (10), the stream of action fluid is switched to the action fluid to be supplied to the gas feed path in the cylinder (10) and will move fluid discharge from cylinder (10) and be directed in the gas discharge path in the compressor (1) any one.Be provided with the spring (20) on the sliding surface (9a) of valve plate (9) that the sliding surface (8a) that is used for valve body (8) presses against the rotation of revolving valve RV.The bypass path (24) that is provided with the 1st space (26) that will form at the opposition side of the sliding surface (8a) of valve body (8) and is communicated with the 2nd space (27) that is connected with the sliding surface (8a) of valve body (8), valve body (8) is only pushed by the spring-load of spring (20).
Description
Technical field
The present invention relates to cold accumulator type refrigeration machine, the supply of particularly using revolving valve to cut the action fluid of reversing cylinder (cylinder) reaches from the cold accumulator type refrigeration machine of the mode of the discharge of the action fluid of cylinder.
Background technology
As the refrigerator that produces extremely low temperature is known (GM) refrigerator of Ji Fute-McMahon (ギ Off オ one De マ Network マ ホ Application) arranged.The GM refrigerator is to utilize to obtain the refrigerator of cooling effect by the Volume Changes in the space of reciprocating displacer (displacer) in cylinder and based on Ji Fute-McMahon freeze cycle.
In the GM refrigerator, the refrigerant gas (cold media gas, helium etc.) of high pressure is supplied in the cylinder, make its heat insulation expansion and become low temperature.Expand and become utmost point refrigerant of low temperature gas from absorbing heat on every side and with cool storage material (or cold-storage parts) heat exchange after being warmed up to room temperature, exhaust from cylinder.Thus, utmost point low temperature will be maintained in the cylinder.The refrigerant gas of discharging from cylinder is sent in the compressor and is compressed, and becomes the refrigerant gas of high pressure.The refrigerant gas of this high pressure is supplied in the cylinder of GM refrigerator once more.
Discharge from cylinder for higher pressure refrigerant gas being supplied to the refrigerant gas that in the cylinder, also will become low pressure in cylinder, the transfer valve of giving gas, exhaust of refrigerant gas is switched in the reciprocating motion of the displacer in use and the cylinder synchronously.In the GM refrigerator, usually use guiding valve, poppet valve, revolving valve etc. as transfer valve.
Revolving valve is will press against as the valve plate of cylindric rotary body on one side to make its rotation on the valve body on one side, and the path that will form on valve body and be connected with cylinder along with the rotation of valve plate switches to the mechanism to gas side path and exhaust side path.Usually, valve plate rotates a circle to switch and once gives gas and exhaust.
In GM refrigerator in the past, be the refrigerant gas of supplying with high pressure from the single face side of valve body, and by contact the structure (for example, with reference to patent documentation 1) that the valve plate that rotates switches on one side on one side with the sliding surface of the opposition side of valve body.Because valve plate carries out face with valve body and contacts, the refrigerant gas path that needs will form on valve body on one side seals rotation on one side, so valve body and valve plate need to push mutually.The sliding surface of the valve plate of face contact and the sliding surface of valve body are the higher faces of flatness, constitute by the sliding surface with the sliding surface of valve body and valve plate to push mutually and the refrigerant gas path that will form on valve plate keeps airtight.
In GM refrigerator in the past, utilize the pressure of the refrigerant gas of giving gas for valve body being pressed against on the valve plate.Promptly constitute, when the opposition side from the sliding surface of valve body imports the refrigerant gas of high pressure, the pressure of refrigerant gas acts on the face with the sliding surface opposition side of valve body, by the pressure differential with the pressure of the refrigerant gas of the exhaust of the sliding surface side of the pressure of the sliding surface opposition side of valve body and valve body valve body is pressed against on the valve plate.
[patent documentation 1] (Japan) spy opens the 2001-280728 communique
Under the situation of pressure as the pushing force utilization of revolving valve (being valve body) of the refrigerant gas that will give gas as described above, the pushing force of valve body exists with ... the pressure to the refrigerant gas of the refrigerant gas of gas and exhaust.Thereby, if the pressure oscillation of refrigerant gas then the pushing force of revolving valve also change.
Under the less situation of the pressure differential of the refrigerant gas of the refrigerant gas of giving gas and exhaust, pushing force also diminishes, air-tightness step-down on sliding surface, and refrigerant gas might leak between the sliding surface.On the other hand, if give the pressure of refrigerant gas of gas higher, then pushing force also becomes greatly, and it is excessive that the frictional force on the sliding surface might become.
The state turning down valve events that if the pressure at refrigerant gas is higher, the frictional force of sliding surface is excessive, then the wearing and tearing of the sliding surface of valve body and valve plate become violent.If running continuously under such state, the lifetime of revolving valve then, the problem of revolving valve must be more early changed in generation.In addition, the wearing and tearing powder that also has the excessive friction because of valve body and valve plate to produce enters in the cylinder, becomes the problem of the bad reason of the action that causes cylinder.
And then, if the frictional force of sliding surface is bigger, the motor generation step-out that is used for making the valve plate rotation, the problem that valve plate is normally rotated are arranged also then.
In addition, if the pushing force of valve body is bigger, then must support valve plate to bear these pushing force.Because valve plate is the parts of rotation, so rotatably supported by ball bearing.Thereby thrust loading that be applied on the ball bearing also increases if the pushing force of valve body is big, and the result has the problem of the lifetime of ball bearing.
Summary of the invention
The present invention makes in view of the above problems, purpose provide a kind of have moderately to regulate be used for valve body pushing and connect airtight the cold accumulator type refrigeration machine of the revolving valve of the pushing force on valve plate.
To achieve these goals,, provide a kind of cold accumulator type refrigeration machine, it is characterized in that having: compressor, compressed action fluid according to the present invention; Cylinder is supplied to this action fluid of compression; Revolving valve, possess valve body and valve plate, above-mentioned valve body and valve plate all have sliding surface, above-mentioned revolving valve is arranged between above-mentioned compressor and this cylinder, the stream of this action fluid is switched to this action fluid to be supplied to the gas feed path in the above-mentioned cylinder and will move fluid discharge from above-mentioned cylinder and be directed in the gas discharge path in the above-mentioned compressor any one; Spring is used for pushing the valve body of this revolving valve and the sliding surface of the valve plate of the sliding surface of this valve body and this revolving valve is connected airtight; Bypass path, the 1st space that will form and be communicated with the 2nd space that the above-mentioned sliding surface of above-mentioned valve body links at the opposition side of the above-mentioned sliding surface of above-mentioned valve body; Only the spring-load by above-mentioned spring produces the pushing force that acts on the above-mentioned valve body.
In cold accumulator type refrigeration machine of the present invention, be preferably to have formed and be used for the gas supply member of gas supply hole of the supply system refrigerant gas and be set at the opposition side of the above-mentioned sliding surface of above-mentioned valve body, the gas flow path of this gas supply hole and above-mentioned valve body is connected, between above-mentioned gas supply part and above-mentioned valve body, be provided with seal member, with sealing airtightly between above-mentioned gas supply hole and above-mentioned gas stream and above-mentioned the 1st space.In the case, the 2nd space and the 1st space of the pressure of exhaust side are communicated with by bypass path, so the 1st space also becomes the pressure of exhaust side.
In addition, be preferably, the above-mentioned gas supply part has the leading section in the gas flow path that extends to above-mentioned valve body, and above-mentioned seal member is arranged between the inner peripheral surface of above-mentioned gas stream of the outer peripheral face of this leading section and above-mentioned valve body.Above-mentioned bypass path also can be the pore that forms on the above-mentioned revolution valve housing accommodating.
Effect of the present invention is as follows:
According to the present invention, by only producing the pushing force of the valve body of revolving valve by the spring-load of spring, can always certain pushing force be acted on the valve body, can can make the life-span of revolving valve elongated in the bubble-tight while check valve main body of the slipper of keeping valve body and valve plate and the wearing and tearing of valve plate.In addition, can reduce the driving force that is used for making the valve plate rotation.And then, can reduce the thrust loading that is applied on the bearing that rotatably supports valve plate.
Description of drawings
Fig. 1 is the cutaway view of Ji Fute-McMahon type refrigerator of the 1st embodiment of the present invention.
Fig. 2 is the exploded perspective view of revolving valve shown in Figure 1.
Fig. 3 is the cutaway view of the 2nd grade of displacer 3b shown in Figure 1.
Fig. 4 is with revolving valve shown in Figure 1 and amplifies the cutaway view of expression on every side.
Fig. 5 is the curve map of the variation of the refrigerating capacity of expression when spring-load is changed.
The curve map of Fig. 6 refrigerating capacity that to be expression obtained by the pushing of refrigerant gas pressure and the refrigerating capacity that only obtains by the pushing of spring-load.
The specific embodiment
Then, describe with reference to the refrigerator of accompanying drawing embodiments of the invention.
Fig. 1 is the cutaway view of Ji Fute-McMahon (GM) type refrigerator of the 1st embodiment of the present invention.GM type refrigerator of the present invention has gas compressor 1 and cold forging machine 2.Cold forging machine 2 has housing section 23 and cylinder portion 10.Gas compressor 1 sucks refrigerant gas and compression from air entry 1a, and the refrigerant gas of high pressure is discharged from outlet 1b.Refrigerant gas as the action fluid uses helium usually.
Be formed with the 1st grade of expanding chamber 11 on the end of the 2nd grade of cylinder 10b side in the 1st grade of cylinder 10a, on the other end, be formed with upper chambers 13.On the 2nd grade of cylinder 10b and end the 1st grade of cylinder 10a side opposition side, be formed with the 2nd grade of expanding chamber 12.
Dispose sealing mechanism 50 near the end of upper chambers 13 sides in the outer peripheral face of the 1st grade of displacer 3a.By sealing mechanism 50 with the clearance seal between the inner peripheral surface of the outer peripheral face of displacer 3a and cylinder 10a.
At displacer 3a, 3b during to upper chambers 13 side shiftings, the volume reducing of upper chambers 13, the 1st grade and the 2nd grade expanding chamber 11 and 12 volume increase.At displacer 3a, 3b to reverse when mobile, the increase and decrease of volume reversing.Along with the change of the volume of upper chambers 13, expanding chamber 11 and 12, refrigerant gas moves by gas flow path L1～L4.At this moment, between refrigerant gas, cool storage material 4 and 5, carry out heat exchange.
In the stream of refrigerant gas, between the air entry 1a of compressor 1 and outlet 1b and upper chambers 13, dispose revolving valve RV.The refrigerant gas guiding that revolving valve RV will discharge from the outlet 1b of gas compressor 1 in upper chambers 13, in addition, for the refrigerant gas guiding in the upper chambers 13 is switched the stream of refrigerant gas to the air entry 1a of gas compressor 1.
Revolving valve RV has valve body 8 and valve plate (valve plate) 9.Valve plate 9 is for example formed by aluminium alloy, and valve body 8 is for example by tetrafluoroethylene (the ベ ア リ of NTN corporate system-FL3000) form for example.Valve body 8 and valve plate 9 have smooth sliding surface, the face contact each other of this smooth sliding surface.On both at least one of sliding surface, mar proof is improved, preferably form film by formation such as diamond-like-carbon (DLC) hard material of etc.ing.
Valve plate 9 rotatably is supported in the housing 23 by rotating shaft 16.The cam pin 14a that drives the crank 14 of dog link 22 is the center revolution with the rotating shaft, makes valve plate 9 rotations thus.Valve body 8 still be not fixed on the direction of valve plate 9 by fixing so that it does not rotate to pin 19.At the rear side of valve body 8, between gas supply member 25, coil spring 20 is arranged with compressed state configuration as elastomeric element.Thereby valve body 8 is urged with respect to valve plate 9 under the effect of the pushing force of coil spring 20.Thus, the sliding surface of valve body 8 contacts with the state face that has applied suitable face pressure with respect to the sliding surface of valve plate 9.The gas supply hole 25a that forms on gas supply member 25 is communicated with the gas flow path 8b of valve body 8, from gas supply hole 25a to valve body 8 the supply system refrigerant gas.
In addition, valve plate 9 supports pushing force by the jut of housing 23.In addition, though not shown when assembling, housing 23 becomes the structure of having been cut apart, inserted valve plate from the gases at high pressure supply side.
In the present embodiment, the pushing force as the pushing force that is used for producing 8 pairs of valve plates 9 of valve body produces mechanism and is provided with coil spring 20.Produce mechanism as this pushing force, be preferably coil spring 20, but also can use the spring that is not to be wound as the coiled type spring or, also can use elastomeric elements such as rubber or plastics so long as to produce the parts of elastic force by compression just passable.
Fig. 2 is the exploded perspective view of revolving valve RV.The smooth sliding surface 8a of columned valve body 8 and the smooth sliding surface 9a of valve plate 9 carry out face and contact.Connect valve body 8 as the gas flow path 8b of gas feed path along the central shaft of valve body 8.That is, the end of gas flow path 8b is in sliding surface 8a upper shed.The other end of gas flow path 8b is connected with the outlet 1b of gas compressor shown in Figure 11.Gas flow path 8b from the outlet 1b of gas compressor 1 to valve body 8 is equivalent to the gas feed path.
Be formed with on the sliding surface 8a of valve body 8 along the central shaft with valve body 8 is the groove 8c of the circular arc at center.The end of the gas flow path 8d that forms in the inside of valve body 8 is in the upper shed of the bottom surface of groove 8c.The other end of gas flow path 8d also is communicated with upper chambers 13 via the gas flow path 21 that forms on housing shown in Figure 1 23 in the outer peripheral face upper shed of valve body 8.
On the sliding surface 9a of valve plate 9, be formed with the groove 9d that extends from mind-set radial direction wherein.When the end of the outer circumferential side of valve plate 9 rotation, groove 9d partly overlapped with groove 8c, gas flow path 8b and gas flow path 8d were communicated with via groove 9d.
The gas flow path 9b parallel with rotating shaft connects valve plate 9 and extends.On the radial direction of gas flow path 9b in sliding surface 9a, with the sliding surface 8a of valve body 8 on the identical substantially position upper shed of groove 8c that forms.When the peristome of valve plate 9 rotations, gas flow path 9b partly overlapped with groove 8c, gas flow path 8d and gas flow path 9b were communicated with.The other end of gas flow path 9b is communicated with the air entry 1a of gas compressor 1 via the cavity in the housing shown in Figure 1 23.Air entry 1a from the gas flow path of valve plate 9 to compressor 1 is equivalent to the gas discharge path.
When gas flow path 8b and gas flow path 8d are communicated with via groove 8c, refrigerant gas is sent in the upper chambers 13 from compressor 1.When gas flow path 8d and gas flow path 9b connection, the refrigerant gas in the upper chambers 13 are recycled in the compressor 1.Thereby, if make valve plate 9 rotation, then repeat to the refrigerant gas of upper chambers 13 importing (giving gas) and from the recovery (exhaust) of the refrigerant gas of upper chambers 13.The reciprocal driving of the importing of refrigerant gas and the repetition of recovery and displacer 3a and 3b is all synchronous with the rotation of crank 14.If suitably regulate the phase place of the importing repeat refrigerant gas and recovery and back and forth drive the phase place of displacer 3a and 3b, then in expanding chamber 11 and 12, refrigerant gas becomes utmost point low temperature and produces heat-absorbing action.
Fig. 3 is the cutaway view of the 2nd grade of displacer 3b.Cover 31 inserts, is bonded in the lower end of the open cartridge 30 of upper and lower side.Cartridge 30 and cover 31 are formed by folder cloth phenol.On cover 31, dispose wire netting 32, dispose felt bolt 33 above it.
On felt bolt 33, for example be filled with the cool storage material 5 that forms by little shot.In addition, also can use magnetic cold-storage material as cool storage material 5.If use magnetic cold-storage material then can improve refrigerating capacity.On cool storage material 5, dispose felt bolt 34, on felt bolt 34, dispose punch metal (パ Application チ Application グ メ Le) 35.Punch metal 35 is fixed on the inner surface top of cartridge 30 by the jump that is provided with along circumference.The 1st grade of connect mechanism that displacer 3a combines 36 that is used for shown in Figure 1 is installed in the upper end of cartridge 30.
On the position of height sidewall, wire netting 32 of cartridge 30, be provided with the opening 37 that forms gas flow path.The outer peripheral face that leans at the opening 37 than cartridge 30 is formed with the position of opening 37 and 1 spiral helicine groove 38 of upper end binding.Helicla flute 38 forms spiral helicine gas flow path with the inner surface of cylinder 10b.Helicla flute 38 for example is the about 2mm of width, about deeply 0.6mm, the about 4mm of spacing.
Ratio open 37 by under cartridge 30 external diameter with compare slightly little than its external diameter by last part.Thereby, ratio open 37 by under part in, between cartridge 30 and the 2nd grade of cylinder, be formed with the gap.This gap forms the gas flow path that the inside with cartridge 30 is connected with expansion space 12 shown in Figure 1.
If refrigerant gas flow in the gap that forms between the outer peripheral face of the inner peripheral surface of cylinder 10b and displacer 3b, then refrigerant gas flows along helicla flute 38.At this moment, between refrigerant gas and cool storage material 5, carry out heat exchange via cartridge 30.Refrigerant gas is along spiral helicine long path flow, so carried out sufficient heat exchange.
In addition, also be filled with the cool storage material 4 same in the inside of the 1st grade of displacer 3a with cool storage material 5, and refrigerant gas between carry out heat exchange.
In the cold accumulator type refrigeration machine that constitutes as described above, be provided with in the present embodiment and be used for producing the pushing force generation mechanism that acts on the pushing force on the revolving valve RV.In the present embodiment, have only the pushing force that produces by this pushing force generation mechanism to act on the revolving valve RV, the pushing force that causes because of refrigerant gas does not act on.The pushing force of present embodiment produces mechanism can easily be adjusted to intensity arbitrarily with the pushing force that produces, and also can play a role as the pushing force governor motion.
Fig. 4 is with revolving valve RV shown in Figure 1 and amplifies the cutaway view of expression on every side.
In Fig. 4, valve body 8 is urged with respect to valve plate 9 under the effect of coil spring 20 as mentioned above, valve plate 9 rotation when sliding surface connects airtight, and what switch refrigerant gas thus gives gas, exhaust.At the opposition side of the sliding surface 8a of valve body 8, gas supply member 25 is fixed with respect to housing 23, is formed with the 1st space 26 that coil spring 20 is accommodated between valve body 8 and gas supply member 25.
Be fed into the refrigerant gas that comes from compressor 1 among the gas feed path 25a of gas supply member 25,, be imported in the upper chambers 13 by the gas flow path in the valve plate 9 from the gas flow path 8b of valve body 8 via the gas flow path 21 that on housing 23, forms.
In the present embodiment, accommodate the 1st space 26 of coil spring 20 and the 2nd space 27 that forms in the sliding surface side of valve body 8, by bypass (bypass) path 24 connections that constitute by the pore that on housing 23, forms.Thereby the pressure of the refrigerant gas in the 2nd space 27 that the sliding surface side of valve body 8 forms passes to the 1st space 26 via bypass path 24.Thus, the 1st and the 2nd space 26,27 of valve body 8 both sides becomes equal pressure (pressure of exhaust side), so can be by the pressure pushing valve body 8 of refrigerant gas.Thereby in the present embodiment, the pushing force that is used for pushing valve bodies 8 with respect to valve plate 9 only is the spring-load (loading) of coil spring 20.
In addition, in the present embodiment, on housing 23, form bypass path 24 and make the 1st and the 2nd space 26,27 become uniform pressure, but, also can be (promptly from the gases at high pressure supply side of valve body 8, from in the face of the part in the 1st space 26) form the hole in the axial direction, before soon arriving valve plate 9, form hole radially and be communicated in the 2nd space 27 in the side of valve body 8, make the 1st and the 2nd space become uniform pressure.
It was the structure that does not have bypass path 24, valve body 8 pushed by the pressure in the space (being equivalent to the 1st space 26) of the supply system refrigerant gas in the past, but, constitute in the present embodiment, in the 1st space 26 of the rear side by the pressure of the refrigerant gas of exhaust side being directed to valve body 8 by bypass path 24, the pressure pushing of the not cooled dose gas of valve body 8.Thus, the pushing force of change valve body 8 can not change because of the pressure oscillation of refrigerant gas, can always certain suitable pushing force be acted on the valve body 8 by coil spring 20.
Act on pushing force on the valve body 8, promptly with respect to the sliding surface 9a of valve plate 9 and push the pushing force of sliding surface 8a of valve body 8 so long as the pushing force from the degree of leakage of refrigerant gas between sliding surface 8a and the 9a is just impassable.The wearing and tearing of sliding surface 8a and 9a become big, the lifetime of revolving valve RV if pushing force is excessive.In the present embodiment, for example by drift or the reduction length of regulating winding spring 20 or the spring constant of regulating winding spring 20 of regulating winding spring 20, can the pushing force of regulating action on valve body 8.Thereby, can easily be adjusted to not from the pushing force of the wearing and tearing lesser extent of the degree of leaking between sliding surface 8a and the 9a and sliding surface 8a and 9a.
In the cold accumulator type refrigeration machine of the revolving valve RV that the present inventor states in the use, the spring-load (that is, the pushing force of coil spring 20) of the coil spring 20 of pushing valve body 8 is changed, obtain the refrigerating capacity that obtains by cold accumulator type refrigeration machine.Fig. 5 is its result's of expression a curve map.In example shown in Figure 5, the spring-load of coil spring 20 is set at 2.2kgf, 19.0kgf, 35.0kgf 3 grades, measure the running cold accumulator type refrigeration machine and the refrigerating capacity that obtains.As shown in Figure 5, when spring-load was set at 2.2kgf, the refrigerating capacity minimum inferred that refrigerant gas leaks from revolving valve RV.If spring-load is set at 19.0kgf, then the refrigerating capacity of 50k～70k is increased to 2～1.5 times than spring-load during for 2.2kgf.Deduction reduces a lot from the leakage of the refrigerant gas of revolving valve RV.So after spring-load was set at 35.0kgf, refrigerating capacity was the situation rising of 19.0kgf than spring-load, the degree of rising is 1.2 times.Thus, if spring-load is 35.0kgf, then inferring from the leakage of the refrigerant gas of revolving valve does not almost have.
So measuring is not spring-load but refrigerating capacity when acting on the pressure of refrigerant gas on the valve body 8 as in the past and the pressure that does not apply refrigerant gas and refrigerating capacity when only acting on the spring-load of 35.0kgf on the valve body.Fig. 6 is the curve map of the measurement result of this refrigerating capacity of expression.As shown in Figure 6, when like that acting on the pressure of refrigerant gas on the valve body in the past the refrigerating capacity of (gas pressure is airtight, the about 150kgf of load) and do not apply the pressure of refrigerant gas and when only acting on the spring-load of 35.0kgf on the valve body refrigerating capacity of (spring force is airtight) unanimous on the whole, if the spring-load of 35.0kgf is acted on the valve body then can keep and equal in the past air-tightness.
As mentioned above, the pushing force of present embodiment produces mechanism and is used for making the bypass path 24 that the pressure in the 1st and the 2nd space 26,27 equates, the spring-load of regulating the coil spring 20 of pushing valve body 8 to realize by setting, with in the past like that valve body 8 compared by the situation of the pressure pushing of refrigerant gas, can make the life-span of revolving valve RV elongated.In addition, owing to suppressed the wearing and tearing of sliding surface 8a and 9a, so can prevent to result from the undesirable condition of sneaking into to the refrigerant gas of wearing and tearing powder.
In addition, owing to reduced the frictional force of sliding surface 8a and 9a, so, be used for rotating the commentaries on classics that imposes on motor 15 of drive valve plate 9 apart from reducing.Thereby, motor 15 is not applied excessive commentaries on classics distance, and can be always CD-ROM drive motor 15 normally.In addition, motor 15 can be made littler motor (output is changeed apart from less motor).
And then, because can reduce the pushing force of valve body 8, so also can reduce the pushing force that imposes on valve plate 9.Thereby, can reduce thrust loading to the swivel bearing 16 that constitutes by ball bearing that rotatably supports valve plate 9 etc., can make the life-span of swivel bearing 16 elongated thus.
In addition, even under the pressure of the exhaust side of refrigerant gas becomes than the big situation of the pressure of giving the gas side, can reciprocal as in the past pushing force do not act on the valve body 8 yet and valve body 8 is left from valve plate 9.This be because, the two is connected valve plate 9 and valve body 8 by bypass path 24 and always is configured in the space of the pressure that becomes exhaust side, what can not produce that pressure differential because of refrigerant gas causes acts on pushing force on the valve body 8.
In addition, the above embodiments are that the present invention is applied in example in Ji Fute-McMahon (GM) type refrigerator of 2 grades of formulas, still, the invention is not restricted to 2 grades of formulas, also can be applied in the GM refrigerator of 1 grade or multi-stag.
Claims (4)
1. cold accumulator type refrigeration machine is characterized in that having:
Compressor, the compressed action fluid;
Cylinder is supplied to this action fluid of compression;
Revolving valve, possess valve body and valve plate, above-mentioned valve body and valve plate all have sliding surface, above-mentioned revolving valve is arranged between above-mentioned compressor and this cylinder, the stream of this action fluid is switched to this action fluid to be supplied to the gas feed path in the above-mentioned cylinder and will move fluid discharge from above-mentioned cylinder and be directed in the gas discharge path in the above-mentioned compressor any one;
Spring is used for pushing the valve body of this revolving valve and the sliding surface of the valve plate of the sliding surface of this valve body and this revolving valve is connected airtight; And
Bypass path, the 1st space that will form and the 2nd space connection that is connected with the above-mentioned sliding surface of above-mentioned valve body at the opposition side of the above-mentioned sliding surface of above-mentioned valve body;
Only the spring-load by above-mentioned spring produces the pushing force that acts on the above-mentioned valve body.
2, cold accumulator type refrigeration machine as claimed in claim 1 is characterized in that,
Formed and be used for the gas supply member of gas supply hole of the supply system refrigerant gas and be set at the opposition side of the above-mentioned sliding surface of above-mentioned valve body, the gas flow path of this gas supply hole and above-mentioned valve body is connected, between above-mentioned gas supply part and above-mentioned valve body, be provided with seal member, with sealing airtightly between above-mentioned gas supply hole and above-mentioned gas stream and above-mentioned the 1st space.
3, cold accumulator type refrigeration machine as claimed in claim 2 is characterized in that,
The above-mentioned gas supply part has the leading section in the gas flow path that extends to above-mentioned valve body, and above-mentioned seal member is arranged between the inner peripheral surface of above-mentioned gas stream of the outer peripheral face of this leading section and above-mentioned valve body.
4, cold accumulator type refrigeration machine as claimed in claim 2 is characterized in that,
Above-mentioned bypass path is the pore that forms on the above-mentioned revolution valve housing accommodating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006021235A JP4197341B2 (en) | 2006-01-30 | 2006-01-30 | Regenerator type refrigerator |
| JP021235/2006 | 2006-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101012980A CN101012980A (en) | 2007-08-08 |
| CN100570240C true CN100570240C (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101321151A Active CN100570240C (en) | 2006-01-30 | 2006-10-10 | Cold accumulator type refrigeration machine |
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| Country | Link |
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| JP (1) | JP4197341B2 (en) |
| CN (1) | CN100570240C (en) |
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| TWI473956B (en) * | 2011-06-14 | 2015-02-21 | Sumitomo Heavy Industries | Cooler type freezer |
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| JP2010216711A (en) * | 2009-03-16 | 2010-09-30 | Sumitomo Heavy Ind Ltd | Cold storage device type refrigerator |
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2006
- 2006-01-30 JP JP2006021235A patent/JP4197341B2/en active Active
- 2006-10-10 CN CNB2006101321151A patent/CN100570240C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI473956B (en) * | 2011-06-14 | 2015-02-21 | Sumitomo Heavy Industries | Cooler type freezer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101012980A (en) | 2007-08-08 |
| JP2007205581A (en) | 2007-08-16 |
| JP4197341B2 (en) | 2008-12-17 |
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