CN100535557C - Two-way constant pressure expansion valve - Google Patents
Two-way constant pressure expansion valve Download PDFInfo
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- CN100535557C CN100535557C CNB2005101200082A CN200510120008A CN100535557C CN 100535557 C CN100535557 C CN 100535557C CN B2005101200082 A CNB2005101200082 A CN B2005101200082A CN 200510120008 A CN200510120008 A CN 200510120008A CN 100535557 C CN100535557 C CN 100535557C
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- 239000003507 refrigerant Substances 0.000 claims abstract description 57
- 230000004888 barrier function Effects 0.000 claims description 56
- 238000001816 cooling Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000003292 diminished effect Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Driven Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The present invention relates to a two-way constant pressure expansion valve capable of setting the refrigerant to a definite pressure more accurately than the old valves. According to the two-way constant pressure expansion valve(10)of the present invention, the pressure-sensitive part(20A, 20B)of one end side and the other end side will not, by it self, moving corresponding to the flowing direction of the refrigerant because the pressure-sensitive part(20A, 20B)of one end side and the other end side are fixed to the main body(10B). So the pinchbeck can be telescopically supported on the direct acting supporting mechanism without limiting the buckling of the pinchbeck. Thus, the sliding resistance effect of the direct acting supporting mechanism can be eliminate so as to set the refrigerant to a definite pressure more accurately than the old valves.
Description
Technical field
The present invention relates between a kind of outdoor heat converter that is connected the thermal pump loop and the indoor heat converter and make cold-producing medium, the refrigerant pressure of downstream side can be made as the two-way constant pressure expansion valve of certain value along two-way flow.
Background technology
Two-way constant pressure expansion valve in the past shown in Figure 6 axially has 1 pair of ball valve mechanism 2,2 stream 1 that cold-producing medium flow through, and can possess movable body 3 between these ball valve mechanism 2,2 directly movingly.In addition, movable body 3 possesses the bellows 4 that extends along its directly moving direction, limits the straight moving supporting mechanism 5 of buckling and bellows 4 can telescopically be supported of this bellows 4.Specifically, straight moving supporting mechanism 5 forms following structure, promptly, make from movable plate 5A, the 5A at the two ends of being fixed in bellows 4 and to support teat 5B, 5B and closely extend mutually, make support pin 5C run through these and support teat 5B, 5B, can make straight mutually moving between support teat 5B, the 5B under the state that limit the opposing inclined that supports teat 5B, 5B.
Be extended with 1 pair of pushing axle 6,6 from the both ends of movable body 3 towards each ball valve mechanism 2,2, each pushing axle 6,6 pushes ball 2A, the 2A of each ball valve mechanism 2,2 with the pushing force corresponding with the dilatability of bellows 4, regulates the valve opening of each ball valve mechanism 2.That is, when cold-producing medium for example flowed to the right from the left side of Fig. 6, movable body 3 just leaned to dirty side shifting in the wall portion in stream 1, and a side pushing axle 6 remains out the valve state with the ball valve mechanism 2 on downstream side (with the right side of figure).Consequently, the refrigerant pressure of the downstream side of ball valve mechanism 2 is applied on the bellows 4, and the opposing party's pushing axle 6 is with the ball 2A of the ball valve mechanism 2 of the pushing force pushing upstream side (with the left side of figure) corresponding with the bounce of bellows 4.Like this, the ball valve mechanism 2 of upstream side just forms the valve opening corresponding with the refrigerant pressure of downstream side, thereby the cold-producing medium of downstream side can be made as certain pressure (for example with reference to patent documentation 1).
No. 3418271 communique of [patent documentation 1] patent ([0024]～[0028] section, Fig. 1)
But, in the described two-way constant pressure expansion valve in the past, in the scope in the space between the inner peripheral surface of the side of movable body 3 and stream 1, when movable body 3 is offset along the direction with straight moving direction quadrature, then can and support between teat 5B, the 5B at binding bolt 5C and apply torque load, these resistances to sliding that link between bolt 5C and support teat 5B, the 5B produce deviation.Bellows 4 also produces deviation with respect to the stroke of refrigerant pressure like this, thereupon.Thus, in the two-way constant pressure expansion valve in the past, be difficult to cold-producing medium is made as certain pressure exactly.
Summary of the invention
The present invention In view of the foregoing finishes, and its purpose is to provide can be more in the past than the two-way constant pressure expansion valve that more exactly cold-producing medium was made as certain pressure.
In order to reach described purpose, the two-way constant pressure expansion valve of technical scheme 1 is connected between the indoor heat converter and outdoor heat converter in thermal pump loop, and makes cold-producing medium along two-way flow, the refrigerant pressure of downstream side can be made as certain value, it is characterized in that possessing:
Main body, its for pipeline shape and within it portion have the stream of described cold-producing medium;
1 pair of subregion wall, two axial positions that it is located at described main body are divided into a distolateral zone, zone line and territory, other end lateral areas with described stream;
1 pair of valve port, it comprises first valve port and second valve port, this 1 pair of valve port runs through and is formed on described 1 pair of subregion wall and by approximate configuration coaxially;
A pair of circular teat, from described a pair of subregion wall respectively outstanding with opposing face described zone line, form ring-type around described valve port;
One distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of a described distolateral area side, described barrier film and relative configuration of described first valve port;
The first sidepiece through hole, its run through be formed on a described circular teat the footpath upwards, and the space between described barrier film and the described subregion wall is communicated with described one distolateral zone integral body;
Another distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of described other end side area side, described barrier film and relative configuration of described second valve port;
The second sidepiece through hole, its run through be formed on another described circular teat the footpath upwards, and the space between described barrier film and another the described subregion wall is communicated with territory, described other end lateral areas integral body;
Movable valve body, it is accommodated in the described zone line and moves between described 1 pair of valve port, and can change the valve opening of described valve port of an approaching side;
The 1st leans axle, it is from described movable valve body outstanding with relative portion described first valve port, when described movable valve body during to the described first valve port side shifting, be embedded under the state of described first valve port described barrier film apical grafting with described one distolateral pressure-sensitive portion in trip, thereby described movable valve body is positioned position to distortion that should barrier film;
The 2nd leans axle, it is from described movable valve body outstanding with relative portion described second valve port, when described movable valve body during to the described second valve port side shifting, be embedded under the state of described second valve port described barrier film apical grafting with described another distolateral pressure-sensitive portion in trip, thereby described movable valve body is positioned position to distortion that should barrier film.
The invention of technical scheme 2 is a kind of two-way constant pressure expansion valves, is connected between the indoor heat converter and outdoor heat converter in thermal pump loop, and makes cold-producing medium along two-way flow, the refrigerant pressure of downstream side can be made as certain value, it is characterized in that possessing:
Main body, its for pipeline shape and within it portion have the stream of described cold-producing medium;
1 pair of subregion wall, two axial positions that it is located at described main body are divided into a distolateral zone, zone line and territory, other end lateral areas with described stream;
1 pair of valve port, it comprises first valve port and second valve port, this 1 pair of valve port runs through and is formed on described 1 pair of subregion wall and by approximate configuration coaxially;
A pair of circular teat, from described a pair of subregion wall respectively outstanding with opposing face described zone line, form ring-type around described valve port;
One distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of a described distolateral area side, described barrier film and relative configuration of described first valve port;
The first sidepiece through hole, its run through be formed on a described circular teat the footpath upwards, and the space between described barrier film and the described subregion wall is communicated with described one distolateral zone integral body;
Another distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of described other end side area side, described barrier film and relative configuration of described second valve port;
The second sidepiece through hole, its run through be formed on another described circular teat the footpath upwards, and the space between described barrier film and another the described subregion wall is communicated with territory, described other end lateral areas integral body;
The movable valve body of sphere-like, it is accommodated in the described zone line and moves between described 1 pair of valve port, and can change the valve opening of described valve port of an approaching side;
The 1st leans axle, its described barrier film from described one distolateral pressure-sensitive portion is outstanding, trip is embedded in described first valve port, leans with described movable valve body to the described first valve port side shifting, thereby will described movable valve body be positioned the position of distortion of the described barrier film of the distolateral pressure-sensitive of correspondence described a portion;
The 2nd leans axle, its described barrier film from described another distolateral pressure-sensitive portion is outstanding, trip is embedded in described second valve port, leans with described movable valve body to the described second valve port side shifting, thereby will described movable valve body be positioned the position of distortion of the described barrier film of described another the distolateral pressure-sensitive portion of correspondence.
The invention of technical scheme 3 is to have following feature in technical scheme 1 or 2 described two-way constant pressure expansion valves, promptly, when the warm running of system in thermal pump loop, the aperture area in gap that makes first valve port that is positioned at downstream side and lean axle is greater than second valve port and lean the aperture area in the gap of axle, thus the refrigerant pressure of the downstream side of the refrigerant pressure of the downstream side when making the cooling operation in thermal pump loop during greater than the warm running of system.
The invention of technical scheme 4 is to have following feature in any described two-way constant pressure expansion valve in technical scheme 1 to 3, that is, make the coefficient of elasticity difference of pressure-sensitive portion of coefficient of elasticity, the outdoor heat converter side of the pressure-sensitive portion of the indoor heat converter side in the middle of distolateral or the pressure-sensitive portion that another is distolateral.
The invention of technical scheme 5 is to have following feature in any described two-way constant pressure expansion valve in technical scheme 1 to 4, that is, 1 pair leans axle and extended setting by two ends from movable valve body.
The invention of technical scheme 6 is to have following feature in any described two-way constant pressure expansion valve in technical scheme 1 to 4, that is, lean axle with 1 pair and be individually fixed in another distolateral and distolateral pressure-sensitive portion, and movable valve body and function spheroid is constituted.
Be connected when two-way constant pressure expansion valve between the outdoor heat converter and indoor heat converter in thermal pump loop technical scheme 1, when the thermal pump loop system of being made as is warmed up any one party of running and cooling operation, then in two-way constant pressure expansion valve, cold-producing medium is with the sequential flow mistake in a distolateral zone, first valve port, zone line, second valve port, territory, other end lateral areas.Like this, cooled dose of pushing of the movable valve body in the zone line and to dirty side shifting, trip are embedded in the state that axle becomes projection between the distolateral pressure-sensitive of movable valve body and another portion that leans in the valve port of downstream side.Like this, movable valve body is just by another distolateral pressure-sensitive portion location.Here, when the refrigerant pressure in the territory, other end lateral areas became bigger, then another distolateral pressure-sensitive portion will be away from the distortion of valve port ground, and thereupon movable valve body makes valve opening diminish near valve port, the refrigerant pressure reduction territory, other end lateral areas in.In contrast, when the refrigerant pressure in the territory, other end lateral areas became smaller, then another distolateral pressure-sensitive portion was just near the distortion of valve port ground, and thereupon movable valve body makes valve opening become big away from valve port, the refrigerant pressure rising territory, other end lateral areas in.
When switching the warm running of cooling operation and system, the direction that cold-producing medium flowed is opposite with described situation, it is also identical when one distolateral zone is positioned at downstream side, when the refrigerant pressure in the distolateral zone became bigger, then the valve opening of first valve port diminished, and the refrigerant pressure of downstream side rises, on the other hand, when the refrigerant pressure in the distolateral zone became smaller, then the valve opening of its valve port became big, and the refrigerant pressure of downstream side reduces.And, regardless of the flow direction of cold-producing medium,, thereby just being separated fully between the valve port of movable valve body and upstream side because of movable valve body flows side shifting downwards, the valve port of upstream side always becomes out the valve state.
Like this, according to two-way constant pressure expansion valve of the present invention, just the refrigerant pressure of downstream side can be made as certain value.And, because a pressure-sensitive portion distolateral and that another is distolateral is fixed on the main body, therefore can not move accordingly with the flow direction of cold-producing medium once pressure-sensitive portion self distolateral and that another is distolateral.So, just do not need as in the past, to limit buckling and directly moving supporting mechanism of bellows with what bellows can telescopically support.Like this, directly the influence of the resistance to sliding of moving supporting mechanism will disappear, thereby can be than more exactly cold-producing medium was made as certain pressure in the past.
And therefore the distolateral pressure-sensitive of a distolateral pressure-sensitive portion and another portion just can form the formation of being out of shape accordingly with refrigerant pressure because of possessing any one party of barrier film or bellows.In addition, possessed in formation under the situation of formation of barrier film, for example, at one end laid barrier film on the opening of Kai Fang pressure-sensitive cylindrical shell, the pressure-sensitive cylindrical shell is fixed on the main body has got final product as the invention of technical scheme 2.
In addition, two-way constant pressure expansion valve of the present invention is different with two-way constant pressure expansion valve in the past, because at one end side and another distolateral pressure-sensitive portion that is provided with in couples, therefore just can be respectively the valve port of the characteristic with respect to the valve opening of refrigerant pressure of the valve port of indoor heat converter side, outdoor heat converter side be each adaptive characteristic with it with respect to the property settings of the valve opening of refrigerant pressure.
Specifically, by two-way constant pressure expansion valve as technical scheme 3, the aperture area that makes the gap that is positioned at first valve port of downstream side and leans axle when making warm running is greater than the aperture area of second valve port with the gap that leans axle, the refrigerant pressure of the downstream side of the refrigerant pressure of the downstream side when making the cooling operation in thermal pump loop during greater than the warm running of system, in the time of just can be with cooling operation and the cold-producing medium that is controlled as best temperature and pressure respectively during the warm running of system to outdoor and indoor heat converter supply.
In addition, by two-way constant pressure expansion valve as technical scheme 4, make the pressure-sensitive portion of the indoor heat converter side that when cooling operation, is positioned at downstream side in the middle of distolateral or the pressure-sensitive portion that another is distolateral coefficient of elasticity, when the warm running of system, be positioned at the coefficient of elasticity difference of pressure-sensitive portion of the outdoor heat converter side of downstream side, obtain the lifting characteristic of the valve of the best under just can each situation when different cooling operation of refrigerant pressure and refrigerant flow and the warm running of system.
According to the formation of technical scheme 5, because 1 pair lean axle and extended from two ends of movable valve body and be provided with, therefore just can be with the simple structureization of a distolateral and pressure-sensitive portion that another is distolateral.
As technical scheme 6, lean axle with described 1 pair and be individually fixed in described another distolateral and distolateral pressure-sensitive portion, described movable valve body and function spheroid is constituted.
Description of drawings
Fig. 1 is the sectional side view of the two-way constant pressure expansion valve of embodiments of the present invention 1.
Fig. 2 is the sectional side view of this two-way constant pressure expansion valve.
Fig. 3 is the sectional side view of this two-way constant pressure expansion valve.
Fig. 4 is the schematic diagram in thermal pump loop.
Fig. 5 is the sectional side view of the two-way constant pressure expansion valve of embodiment 2.
Fig. 6 is the sectional side view of two-way constant pressure expansion valve in the past.
Among the figure: 10,30-two-way constant pressure expansion valve, 10B-main body, 11-stream, 13, the 13F-opposed walls, 15A-guides cylindrical shell, and the 15C-cold-producing medium is by hole, 16A, 16B-valve port, the movable valve body of 17-, 17D, 34-lean axle, the distolateral pressure-sensitive of 20A-one portion, another distolateral pressure-sensitive portion of 20B-, 21-pressure-sensitive cylindrical shell, 22-barrier film, 33-spheroid, 90-thermal pump loop, 91A-outdoor heat converter, 92A-indoor heat converter, R1-one distolateral zone, territory, R2-other end lateral areas, R3-zone line.
The specific embodiment
[embodiment 1]
Below, will describe an embodiment of the invention based on Fig. 1～Fig. 4.
The main body 10B of the two-way constant pressure expansion valve 10 of present embodiment shown in Figure 1 possesses 1 pair of opposed walls 13,13 in the inside of pipe element 12.Pipe element 12 is for example made circle with the cross section and is simply extended, and being conical surface shape near end positions by undergauge, compares with mid portion, and the diameter at both ends is littler.
The 1 pair of opposed walls 13,13 becomes and pipe element 12 member independently.Towards the opposing party's opposed walls 13, be extruded with guiding cylindrical shell 15A cylindraceous from the center of a side opposed walls 13.Relative with it, be formed with circular depressions 15B at the center of the opposing party's opposed walls 13, chimeric in the inside of this circular depressions 15B have a guiding cylindrical shell 15A, between the opposed walls 13,13 by centering alignment mutually.In addition, the head end of guiding cylindrical shell 15A is leaned on the inner face of circular depressions 15B, according to making interval between the opposed walls 13,13 become the mode of certain size, is located mutually between the opposed walls 13,13.
On the outer peripheral face of each opposed walls 13, spread all over the full lock slots 14 that is formed with allly.Corresponding with it, at 2 axial positions of the mid portion of pipe element 12, it is integrally crooked to the inside and form 1 couple of prominent bar 12T, 12T that the part of pipe element 12 is spreaded all over circumferencial direction.And, each prominent bar 12T is locked together in the lock slots 14 of each opposed walls 13,13, with opposed walls 13,13 positioning and fixing in pipe element 12, and with the gap filling of the inner peripheral surface of the outer peripheral face of opposed walls 13,13 and pipe element 12.Like this, the stream 11 in the pipe element 12 just is divided into the zone line R3 of a distolateral distolateral region R 1, another distolateral other end lateral areas territory R2 and these distolateral region R 1 and the centre of other end lateral areas territory R2 by 1 pair of opposed walls 13,13.
Central part in opposed walls 13,13 is formed with valve port 16A, 16B.The opening shape of these valve ports 16A, 16B all becomes circle, be disposed at mutually coaxial on.In addition, described guiding cylindrical shell 15A and circular depressions 15B are configured on the concentric circles of these valve ports 16A, 16B.In addition, the internal diameter of the valve port 16A of a pair of opposed walls 13 (the valve port 16A of the upside of Fig. 1) is greater than the internal diameter of the valve port 16B of the opposing party's opposed walls 13.Like this, cold-producing medium will pass these valve ports 16A, 16B, and at one end between territory, lateral areas R1 and the zone line R3, flow through between zone line R3 and the other end lateral areas territory R2.In addition, the edge of opening of the zone line R3 side of two valve port 16A, 16B has been implemented bigger chamfered, becomes the valve seat 16Z of conical surface shape.
At the both ends of guiding cylindrical shell 15A, be formed with respectively guiding cylindrical shell 15A is passed through hole 15C along the cold-producing medium that the direction with axial quadrature runs through, cold-producing medium passes these cold-producing mediums and flows through between the inboard of guiding cylindrical shell 15A and the outside by hole 15C.In addition, on each opposed walls 13,13, the ground, both ends that surrounds guiding cylindrical shell 15A is formed with conical surface 15T, 15T.Like this, for example will play following effect, promptly, to pass through the cold-producing medium of hole 15C from a distolateral cold-producing medium towards the flows outside of guiding cylindrical shell 15A, utilize the axial guiding of a distolateral conical surface 15T, and will utilize another distolateral conical surface 15T to guide in by hole 15C along the cold-producing medium that flows in the outside of guiding cylindrical shell 15A to another distolateral cold-producing medium along guiding cylindrical shell 15A.
Inside at guiding cylindrical shell 15A contains movable valve body 17.Movable valve body 17 forms the cylindrical configuration of extending along the direction coaxial with guiding cylindrical shell 15A, and along with advancing to both ends, head end is tapered.Specifically, movable valve body 17 possesses sliding part 17A at axial central portion,, possesses the trip embedding 17B of portion, the 17C of valve portion successively respectively and leans a 17D towards two head ends from the two ends of this sliding part 17A.
Sliding part 17A forms the size that can slide at the inner face of guiding cylindrical shell 15A, and so movable valve body 17 is just alignd with guiding cylindrical shell 15A and valve port 16A, 16B centering.
Respectively leaning a 17D, 17D is embedded among each valve port 16A, 16B by trip.Like this, cold-producing medium will pass the inner peripheral surface of each valve port 16A, 16B and lean the gap between the outer peripheral face of a 17D, 17D and flow through valve port 16A, 16B.In addition, two lean a 17D, 17D and form identical external diameter.Like this, because as previously mentioned, the internal diameter of a side valve port 16A is greater than the internal diameter of the opposing party's valve port 16B, and therefore a side the valve port 16A and the aperture area in gap that leans a 17D are just greater than the opposing party's valve port 16B with lean the aperture area in the gap of a 17D.
The two trip embedding 17B of portion, 17B diminish with the shape diameter that has ladder with respect to sliding part 17A, and the gap that is formed between the inner face of swimming embedding 17B of portion and guiding cylindrical shell 15A becomes the size that cold-producing medium is passed through.
The 17C of valve portion becomes an end and forms the external diameter identical with the trip embedding 17B of portion and other end formation and the conical surface shape that leans the identical external diameter of a 17D.In addition, the gradient of the conical surface of the 17C of valve portion for example becomes the identical angle of gradient with the valve seat 16 of the conical surface shape of the edge of opening of being located at valve port 16A, 16B.Like this, when as shown in Figure 3, movable valve body 17 is distolateral when mobile to one in guiding cylindrical shell 15A, one side's the 17C of valve portion is just near a side valve port 16A, thereby that can regulate this valve port 16A opens the valve degree, and the opposing party's the 17C of valve portion separates fully with the opposing party's valve port 16B, and valve port 16B becomes out the valve state.In contrast, when as shown in Figure 1, movable valve body 17 is in guiding cylindrical shell 15A during to other end side shifting, the opposing party's the 17C of valve portion is near a side valve port 16B, thereby that can regulate this valve port 16B opens the valve degree, and a side the 17C of valve portion separates fully with the opposing party's valve port 16A, and valve port 16A becomes out the valve state.
In order to regulate the valve opening of each valve port 16A, 16B, on each opposed walls 13,13, the of the present invention one distolateral pressure-sensitive 20A of portion and another distolateral pressure-sensitive 20B of portion are installed as the part of main body 10B.The one distolateral pressure-sensitive 20A of portion and another distolateral pressure-sensitive 20B of portion at one end open on the opening of pressure-sensitive cylindrical shell 21 of valve and are equipped with barrier film 22.On pressure-sensitive cylindrical shell 21, stretch out flange part 21F to the side from its openend.In addition, the outer edge of barrier film 22 is welded with the state that is laid on the flange part 21F.In addition, with flange part 21F accordingly, on the face opposite in the middle of each opposed walls 13,13, near outside part, be formed with circular teat 18 with zone line R3.In addition, from the outer edge of circular teat 18 to zone line R3 away from a side, erect locking plate 19.Like this, be clamped in state between flange part 21F and the circular teat 18, locking plate 19 is fallen to flange part 21F thruster, pressure-sensitive cylindrical shell 21 is fixed on the opposed walls 13 with regard to forming outer edge with barrier film 22.
In addition, in the inside of pressure-sensitive cylindrical shell 21, contain compression spring 24, an end of compression spring 24 is pushed against on the inner support dish 23 on the inner face that abuts against barrier film 22.The central part of inner support dish 23 is outstanding towards barrier film 22, and only the end surface of this ledge leans on barrier film 22.And the inside of pressure-sensitive cylindrical shell 21 forms vacuum.In addition, on circular teat 18, be formed with through hole 18A along the direction with axial quadrature, pass this through hole 18A, the space between barrier film 22 and the opposed walls 13 is communicated with a distolateral region R 1 (or other end lateral areas territory R2) is whole.
Here, in the present embodiment, made barrier film 22 corresponding and the coefficient of elasticity of compression spring 24 at one end different between side and another the distolateral 20A of pressure-sensitive portion, the 20B.Specifically, the coefficient of elasticity of another distolateral pressure-sensitive 20B of portion is greater than the coefficient of elasticity of a distolateral pressure-sensitive 20A of portion.In addition, as previously mentioned, the aperture area in one side's valve port 16A and the gap that leans a 17D is greater than the opposing party's valve port 16B and the aperture area that leans the gap of a 17D, make up by these coefficient of elasticity and aperture area are set at specified value, the refrigerant pressure that other end lateral areas territory R2 becomes this other end lateral areas territory R2 when dirty will become the refrigerant pressure of this distolateral region R 1 when dirty greater than a distolateral region R 1.
The formation of the two-way constant pressure expansion valve 10 of present embodiment is as implied above.As follows for the action specification that this two-way constant pressure expansion valve 10 is installed on the situation in the thermal pump loop 90 shown in Figure 4.This thermal pump loop 90 for example is located in the general home-use room conditioning.Possess outdoor heat converter 91A and indoor heat converter 92A in thermal pump loop 90, this outdoor heat converter 91A is loaded in the off-premises station 91 of room conditioning, and on the other hand, indoor heat converter 92A is loaded in the indoor set 92.In addition, utilize 1 couple of pipeline 96A, 96B to connect between these outdoor heat converters 91A and the indoor heat converter 92A, formation comprises the cold-producing medium circulating path 96 of outdoor heat converter 91A and indoor heat converter 92A, and cold-producing medium passes these outdoor heat converters 91A and indoor heat converter 92A and circulation in cold-producing medium circulating path 96.Like this, when the outdoor heat converter 91A, between cold-producing medium and ambient atmos, carry out heat exchange, at cold-producing medium during, between cold-producing medium and indoor air, carry out heat exchange by indoor heat converter 92A at cold-producing medium.
The two-way constant pressure expansion valve 10 of present embodiment is loaded in the off-premises station 91, and is connected in the way of the pipeline 96A that links the side between outdoor heat converter 91A and the indoor heat converter 92A.So just form following state, that is, the distolateral region R 1 shown in the upside of the Fig. 1 in the middle of the main body 10B always is communicated with outdoor heat converter 91A, and on the other hand, the other end lateral areas territory R2 shown in the downside of Fig. 1 always is communicated with indoor heat converter 92A.In addition, in off-premises station 91 sides, in the way of the opposing party's pipeline 96B, be connected with compressor 94 by cross valve 93.Like this, when thermal pump loop 90 being switched to cooling operation and the warm running of system, cross valve 93 moves, and flows through the reversal of direction of flow of the cold-producing medium of cold-producing medium circulating path 96.
When the cooling operation in thermal pump loop 90, in a side pipeline 96A, cold-producing medium flows to outdoor heat converter 91A from indoor heat converter 92A, at this moment, in two-way constant pressure expansion valve 10, shown in the arrow of Fig. 1, cold-producing medium flows according to a distolateral region R 1, a side's valve port 16A, zone line R3, the opposing party's valve port 16B, the order of other end region R 2.Like this, 17 cooled doses of pushings of movable valve body in the zone line R3 are and mobile to downstream side (being the downside of Fig. 1 under this situation), and the state that leans 17D projection between movable valve body 17 and another distolateral pressure-sensitive 20B of portion among the valve port 16B that is embedded in downstream side is swum in formation.Like this, movably valve body 17 is just by another distolateral pressure-sensitive 20B of portion location.
Here, when the refrigerant pressure in the other end lateral areas territory R2 becomes bigger, then the barrier film 22 of another distolateral pressure-sensitive 20B of portion will be away from the distortion of valve port 16B ground, and thereupon movable valve body 17 diminishes valve opening near valve port 16B, and the refrigerant pressure in the other end lateral areas territory R2 reduces.In contrast, when the refrigerant pressure in the other end lateral areas territory R2 becomes smaller, then the barrier film 22 of another distolateral pressure-sensitive 20B of portion is just near the distortion of valve port 16B ground, and thereupon movable valve body 17 makes valve opening become big away from valve port 16B, and the refrigerant pressure in the other end lateral areas territory R2 rises.Like this, just the refrigerant pressure of downstream side can be made as certain value.
On the other hand, when with thermal pump loop 90 when cooling operation switches to the warm running of system, the direction that cold-producing medium flowed reverses, shown in the arrow of Fig. 2, cold-producing medium flows according to other end lateral areas territory R2, the opposing party's valve port 16B, zone line R3, the opposing party's valve port 16A, the order of a distolateral region R 1.Like this, shown in the variation from Fig. 2 to Fig. 3,17 cooled doses of pushings of movable valve body in the zone line R3 are and mobile to downstream side (being the upside of Fig. 3 under this situation), and the state that leans 17D projection between a movable valve body 17 and a distolateral pressure-sensitive 20A of portion among the valve port 16A that is embedded in downstream side is swum in formation.Like this, movably valve body 17 is just by the distolateral pressure-sensitive 20A of a portion location.
In addition, identical during with cooling operation, when the refrigerant pressure in the distolateral region R 1 became bigger, thereupon movable valve body 17 diminished valve opening near valve port 16A, and the refrigerant pressure in the distolateral region R 1 reduces.In contrast, when the refrigerant pressure in the other end lateral areas territory R2 became smaller, thereupon movable valve body 17 made valve opening become big away from valve port 16B, and the refrigerant pressure in the other end lateral areas territory R2 rises.Like this, just the refrigerant pressure of downstream side can be set certain value.
Like this, according to the two-way constant pressure expansion valve 10 of present embodiment,, the refrigerant pressure of downstream side can be made as certain value regardless of the flow direction of cold-producing medium.In addition, because in the two-way constant pressure expansion valve 10 of present embodiment, one 20A of pressure-sensitive portion, 20B distolateral and that another is distolateral is fixed on the main body 10B, therefore can not move accordingly with the flow direction of cold-producing medium once the 20A of pressure-sensitive portion, 20B self distolateral and that another is distolateral.So, just do not need as in the past, to limit buckling and directly moving supporting mechanism of bellows with what it can telescopically support.Like this, directly the influence of the resistance to sliding of moving supporting mechanism will disappear, thereby can be than more exactly cold-producing medium was made as certain pressure in the past.And, because movable valve body 17 is guided cylindrical shell 15A and can guides directly movingly, the straight moving position of therefore movable valve body 17 is more stable than in the past with the corresponding relation of valve opening, in this, also can compared with the pastly more exactly cold-producing medium be made as certain pressure.
In addition, the two-way constant pressure expansion valve 10 of present embodiment is different with two-way constant pressure expansion valve in the past, because at one end side and another the distolateral 20A of pressure-sensitive portion, 20B of being provided with in couples, therefore just can be respectively the valve port 16A of the characteristic with respect to the valve opening of refrigerant pressure of the valve port 16B of indoor heat converter 92A side, outdoor heat converter 91A side be each adaptive characteristic with it with respect to the property settings of the valve opening of refrigerant pressure.In addition, in the two-way constant pressure expansion valve 10 of present embodiment, because the refrigerant pressure of the downstream side of the refrigerant pressure of the downstream side when making cooling operation during greater than the warm running of system, in the time of therefore just can be with cooling operation and the cold-producing medium that is controlled as best temperature and pressure respectively during the warm running of system to outdoor and indoor heat converter 91A, 92A supply.
And, warm up the valve port 16B and the aperture area that lean the gap of spool 17D of the aperture area in a side's who is positioned at downstream side when turning round valve port 16A and the gap that leans a 17D owing to making greater than the opposing party in system, even therefore when warm running of the bigger system of refrigerant flow, cold-producing medium is successfully flow through.
In addition, by making the coefficient of elasticity that is positioned at another distolateral pressure-sensitive 20B of portion of downstream side when the cooling operation, being positioned at the coefficient of elasticity difference of a distolateral pressure-sensitive 20A of portion of downstream side when the warm running of system, just can be when the different cooling operation of refrigerant pressure and refrigerant flow and each situation during the warm running of system under obtain the lifting characteristic of the valve of the best.
[embodiment 2]
The two-way constant pressure expansion valve 30 of present embodiment is shown among Fig. 5.Below will use identical symbol, the explanation that repeats will be omitted, only the formation different with embodiment 1 be described the formation identical with described embodiment 1.
Among Fig. 5, symbol 31 is the 1st inwall constituting body, and the external diameter that forms a side's who makes described embodiment 1 opposed walls 13 slightly reduces, and stretches out the structure of the prominent bar 31A of locking from its outer peripheral face.In addition, symbol 32 is the 2nd inwall constituting body, and the structure of lock tabs 31B is stretched out in formation to a side opposite with another distolateral pressure-sensitive 20B of portion from the outer edges in the middle of the opposing party's of described embodiment 1 the opposed walls 13.Like this, by forming the state that engages between the end face with the 1st inwall constituting body 31 and the 2nd inwall constituting body 32, lock tabs 31B is crooked to the inside and sealed with the prominent bar 31A of locking, and the 1st inwall constituting body 31 and the 2nd inwall constituting body 32 are just by integrated.
The core of the 2nd inwall constituting body 32, with the composition surface of the 1st inwall constituting body 31 on be formed with the portion that is absorbed in 38 of cross section circle, on the other hand,, be formed with cylinder teat 39 at the core of the 1st inwall constituting body 31.Like this, cylinder teat 39 is by chimeric with the portion of being absorbed in 38, and the inboard of this cylinder teat 39 forms zone line R3 of the present invention, and each inwall that is absorbed in portion 38 and cylinder teat 39 becomes 1 couple of opposed walls 13F, 13F of the present invention.In addition, in the inside of zone line R3, contain spheroid 33 as movable valve body of the present invention.
In addition, on each barrier film 22 of the 20A of portion of side pressure-sensitive at one end and another distolateral pressure-sensitive 20B of portion, be fixed with an end that leans axle 34 at central part separately, the other end that respectively leans axle 34 is configured in valve port 16A, the 16B.Like this, when cold-producing medium flowed downward in Fig. 5, spheroid 33 was to valve port 16B side shifting, formed the gap between the valve seat 16Z of this valve port 16B and spheroid 33.In addition, when the pressure in the other end region R 2 becomes when higher, the valve seat 16Z of spheroid 33 and valve port 16B near and valve opening is diminished, when the pressure in the other end lateral areas territory R2 became relatively lower, spheroid 33 made valve opening become big away from the valve seat 16Z of valve port 16B.Like this, the refrigerant pressure of territory, other end lateral areas R2 just is held certain.
Under the situation that the direction of flow of refrigerant reverses, spheroid 33 is to valve port 16A side shifting, similarly, valve port 16A open the valve degree by with a distolateral region R 1 in refrigerant pressure regulate accordingly, it is certain that the refrigerant pressure of a distolateral region R 1 is held.
[other embodiment]
The present invention is not limited to described embodiment, and the embodiment shown in for example following explanation also is contained in the technical scope of the present invention, in addition, for the mode beyond following, also can carry out various changes in the scope that does not break away from purport and implements.
(1) though a distolateral pressure-sensitive 20A of portion of described embodiment 1 and 2 and another distolateral pressure-sensitive 20B of portion possess barrier film 22, also can replace this barrier film 22, and in the distolateral pressure-sensitive of the portion of side pressure-sensitive at one end and another portion bellows is set.
(2), the formation of these opposed walls 13,13 and pipe element 12 integrated formation also is contained in the technical scope of the present invention though the main body 10B of described embodiment 1 and 2 is equipped with pipe element 12 and opposed walls 13,13 (13F, 13F).
Claims (5)
1. a two-way constant pressure expansion valve is connected between the indoor heat converter and outdoor heat converter in thermal pump loop, and makes cold-producing medium along two-way flow, the refrigerant pressure of downstream side can be made as certain value, it is characterized in that possessing:
Main body, its for pipeline shape and within it portion have the stream of described cold-producing medium;
1 pair of subregion wall, two axial positions that it is located at described main body are divided into a distolateral zone, zone line and territory, other end lateral areas with described stream;
1 pair of valve port, it comprises first valve port and second valve port, this 1 pair of valve port runs through and is formed on described 1 pair of subregion wall and by approximate configuration coaxially;
A pair of circular teat, from described a pair of subregion wall respectively outstanding with opposing face described zone line, form ring-type around described valve port;
One distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of a described distolateral area side, described barrier film and relative configuration of described first valve port;
The first sidepiece through hole, its run through be formed on a described circular teat the footpath upwards, and the space between described barrier film and the described subregion wall is communicated with described one distolateral zone integral body;
Another distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of described other end side area side, described barrier film and relative configuration of described second valve port;
The second sidepiece through hole, its run through be formed on another described circular teat the footpath upwards, and the space between described barrier film and another the described subregion wall is communicated with territory, described other end lateral areas integral body;
Movable valve body, it is accommodated in the described zone line and moves between described 1 pair of valve port, and can change the valve opening of described valve port of an approaching side;
The 1st leans axle, it is from described movable valve body outstanding with relative portion described first valve port, when described movable valve body during to the described first valve port side shifting, be embedded under the state of described first valve port described barrier film apical grafting with described one distolateral pressure-sensitive portion in trip, thereby described movable valve body is positioned position to distortion that should barrier film;
The 2nd leans axle, it is from described movable valve body outstanding with relative portion described second valve port, when described movable valve body during to the described second valve port side shifting, be embedded under the state of described second valve port described barrier film apical grafting with described another distolateral pressure-sensitive portion in trip, thereby described movable valve body is positioned position to distortion that should barrier film.
2. a two-way constant pressure expansion valve is connected between the indoor heat converter and outdoor heat converter in thermal pump loop, and makes cold-producing medium along two-way flow, the refrigerant pressure of downstream side can be made as certain value, it is characterized in that possessing:
Main body, its for pipeline shape and within it portion have the stream of described cold-producing medium;
1 pair of subregion wall, two axial positions that it is located at described main body are divided into a distolateral zone, zone line and territory, other end lateral areas with described stream;
1 pair of valve port, it comprises first valve port and second valve port, this 1 pair of valve port runs through and is formed on described 1 pair of subregion wall and by approximate configuration coaxially;
A pair of circular teat, from described a pair of subregion wall respectively outstanding with opposing face described zone line, form ring-type around described valve port;
One distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of a described distolateral area side, described barrier film and relative configuration of described first valve port;
The first sidepiece through hole, its run through be formed on a described circular teat the footpath upwards, and the space between described barrier film and the described subregion wall is communicated with described one distolateral zone integral body;
Another distolateral pressure-sensitive portion, it at one end is equipped with barrier film on the openend of open pressure-sensitive cylindrical shell, and described pressure-sensitive cylindrical shell is fixed on the front end of the described circular teat of described other end side area side, described barrier film and relative configuration of described second valve port;
The second sidepiece through hole, its run through be formed on another described circular teat the footpath upwards, and the space between described barrier film and another the described subregion wall is communicated with territory, described other end lateral areas integral body; The movable valve body of sphere-like, it is accommodated in the described zone line and moves between described 1 pair of valve port, and can change the valve opening of described valve port of an approaching side;
The 1st leans axle, its described barrier film from described one distolateral pressure-sensitive portion is outstanding, trip is embedded in described first valve port, leans with described movable valve body to the described first valve port side shifting, thereby will described movable valve body be positioned the position of distortion of the described barrier film of the distolateral pressure-sensitive of correspondence described a portion;
The 2nd leans axle, its described barrier film from described another distolateral pressure-sensitive portion is outstanding, trip is embedded in described second valve port, leans with described movable valve body to the described second valve port side shifting, thereby will described movable valve body be positioned the position of distortion of the described barrier film of described another the distolateral pressure-sensitive portion of correspondence.
3. two-way constant pressure expansion valve according to claim 1, it is characterized in that, when the warm running of system in described thermal pump loop, the aperture area that is positioned at described first valve port of downstream side and the described gap that leans axle is greater than described second valve port and the described aperture area in gap that leans axle, thus the refrigerant pressure of the downstream side of the refrigerant pressure of the downstream side when making the cooling operation in described thermal pump loop during greater than the warm running of system.
4. two-way constant pressure expansion valve according to claim 2, it is characterized in that, when the warm running of system in described thermal pump loop, the aperture area that is positioned at described first valve port of downstream side and the described gap that leans axle is greater than described second valve port and the described aperture area in gap that leans axle, thus the refrigerant pressure of the downstream side of the refrigerant pressure of the downstream side when making the cooling operation in described thermal pump loop during greater than the warm running of system.
5. according to any described two-way constant pressure expansion valve in the claim 1 to 4, it is characterized in that the coefficient of elasticity of the coefficient of elasticity of the pressure-sensitive portion of the described indoor heat converter side that described one pressure-sensitive portion distolateral or that another is distolateral is central and the pressure-sensitive portion of described outdoor heat converter side is different.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005212151 | 2005-07-22 | ||
| JP2005212151 | 2005-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1900632A CN1900632A (en) | 2007-01-24 |
| CN100535557C true CN100535557C (en) | 2009-09-02 |
Family
ID=37622728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101200082A Expired - Fee Related CN100535557C (en) | 2005-07-22 | 2005-11-08 | Two-way constant pressure expansion valve |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100630612B1 (en) |
| CN (1) | CN100535557C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151561B (en) * | 2021-12-13 | 2024-03-15 | 芜湖创博智能装备有限公司 | Take flow monitoring's motorised valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632305A (en) * | 1984-09-12 | 1986-12-30 | Nippondenso Co., Ltd. | Expansion valve |
| CN1277335A (en) * | 1994-12-22 | 2000-12-20 | 株式会社不二工机 | Temperature expansion valve |
| US20040011980A1 (en) * | 2002-07-16 | 2004-01-22 | Tgk Co., Ltd. | Constant flow rate expansion valve |
-
2005
- 2005-09-22 KR KR1020050088096A patent/KR100630612B1/en not_active IP Right Cessation
- 2005-11-08 CN CNB2005101200082A patent/CN100535557C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632305A (en) * | 1984-09-12 | 1986-12-30 | Nippondenso Co., Ltd. | Expansion valve |
| CN1277335A (en) * | 1994-12-22 | 2000-12-20 | 株式会社不二工机 | Temperature expansion valve |
| US20040011980A1 (en) * | 2002-07-16 | 2004-01-22 | Tgk Co., Ltd. | Constant flow rate expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100630612B1 (en) | 2006-10-04 |
| CN1900632A (en) | 2007-01-24 |
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