CN102979945B - A kind of heating power expansion valve - Google Patents
A kind of heating power expansion valve Download PDFInfo
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- CN102979945B CN102979945B CN201110258690.7A CN201110258690A CN102979945B CN 102979945 B CN102979945 B CN 102979945B CN 201110258690 A CN201110258690 A CN 201110258690A CN 102979945 B CN102979945 B CN 102979945B
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- power expansion
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Abstract
The invention discloses a kind of heating power expansion valve, the bottom of its valve hole part (31) is supported by elastomeric element (6), and the bottom of described elastomeric element (6) is supported in adjustment seat (5) by spring base (61)；Described adjustment seat (5) is located in the inner chamber (12) of described valve body (1) bottom；Described adjustment seat (5) is provided with guide part (51) and external thread part (52), being provided with seal member (71) between described guide part (51) with the guiding inwall (13) of relative described valve body (1), the axial length of described external thread part (52) is less than the axial length of the internal thread part (14) on valve body (1) inwall coordinated with it.On the one hand the structure design of this heating power expansion valve can reduce the axial length that valve is overall, on the other hand can simplify the structure of the adjusting means of elastomeric element, reduce manufacturing cost.
Description
Technical field
The present invention relates to fluid control component technical field, particularly to a kind of heating power expansion valve.
Background technology
Heating power expansion valve is the vitals of composition refrigeration system, is four basic portion of refrigeration system
Part removes another basic element of character outside vaporizer, compressor and condenser.Heating power expansion valve
Main Function be by sensing refrigeration system in evaporator outlet end or the mistake of compressor suction side
Temperature carrys out the aperture size of control valve, thus realizes the regulation of system cold medium flux and reducing pressure by regulating flow
Purpose.
Refer to Fig. 1 and Fig. 2, Fig. 1 is that in prior art, the structure of a kind of heating power expansion valve is shown
Being intended to, Fig. 2 is the structural representation of the adjusting means of Fig. 1 Elastic parts.
As it is shown in figure 1, this heating power expansion valve includes valve body 1 ', the upper end of valve body 1 ' connects bag
Including the air tank head of the gentle case lid of gas tank seat 2 ' 42 ' 5, the inner chamber of this air tank head is separated by diaphragm 2 ' 1
For epicoele 2 ' 2 and cavity of resorption 2 ' 3；As it is shown in figure 1, epicoele 2 ' 2 is by being filled with coolant and passing through
Capillary tube 4 ' 1 is connected with temperature-sensitive bag, and temperature-sensitive bag is used for experiencing evaporator outlet end or compressor
The degree of superheat of the coolant of arrival end, and in epicoele, produce a temperature, pressure Pb；Meanwhile, under
Chamber 2 ' 3 is connected with described evaporator outlet end by balance pipe (not shown), thus
Cavity of resorption 2 ' 3 produces an evaporating pressure Po。
Additionally, as it is shown in figure 1, the inner chamber of valve body 1 ' is formed valve port 1 ' 1, this valve port 1 ' 1
Being combined with valve hole part 3 ' 1, the upper end of valve hole part 3 ' 1 connects the driver blade being positioned in cavity of resorption
3′2；As it is shown in figure 1, the bottom of valve hole part 3 ' 1 supports flexible parts 6 ', this elasticity
Parts 6 ' are to 1 one elastic force P upwards of valve hole part 3 't。
Using spool 3 ' 1 and driver blade 3 ' 2 as force analysis object, valve hole part 3 ' 1 and transmission
Sheet 3 ' 2 is by an elastic force P upwardst, the downward thrust that simultaneously can be given by diaphragm 2 ' 1,
This thrust that is make the power that diaphragm 2 ' 1 moves downward, that is Pb-Po；When valve hole part 3 ' 1
When being in poised state, Pb-Po=Pt, that is Pb=Po+Pt, when the temperature of evaporator outlet end
Time too high, PbIncrease, thus promote valve hole part 3 ' 1 to move downward, thus increase coolant
Flow；When the temperature of evaporator outlet end is too low, PbReduce, thus promote valve hole part 3 ' 1
Move upward, thus reduce the flow of coolant.
It should be noted that the static degree of superheat of heating power expansion valve is by regulation elastomeric element 6 '
Decrement be configured.As depicted in figs. 1 and 2, the adjusting means bag of elastomeric element 6 '
Including adjustment seat 5 ', be provided with adjusting rod 7 ' in this adjustment seat 5 ', this adjusting rod 7 ' passes through threaded engagement
It is connected with spring base 6 ' 1；Meanwhile, spring base 6 ' 1 is located at the not rounded abnormity gathering sill of adjustment seat 5 '
In 5 ' 1, the exterior contour of this spring base 6 ' 1 and the in-profile of this not rounded abnormity gathering sill 5 ' 1
Unanimously, thus spring base 6 ' 1 can only in this not rounded abnormity gathering sill 5 ' 1 axially movable, and
Can not rotate.Such as Fig. 1 and Fig. 2, during the decrement of regulation elastomeric element 6 ', by just
Turning or reversion adjusting rod 7 ', spring base 6 ' 1 just can move vertically, and then achieve tune
The purpose of joint elastomeric element 6 ' decrement.Additionally, as depicted in figs. 1 and 2, adjusting rod 7 ' with
Being additionally provided with sealing Fig. 7 ' 1 between adjustment seat 5 ', adjusting rod 7 ' is provided with jump ring 7 ' 2, regulates simultaneously
The upper connection of seat 5 ' has bonnet 8 '.
But, in the adjusting means of the decrement of above-mentioned elastomeric element 6 ', due to adjustment seat 5 '
And the adjusting rod 7 ' being located at this adjustment seat 5 ' inside is mostly in the outside of valve body 1 ', thus make
The axial length becoming heating power expansion valve overall is relatively big, in the system environments that installing space is less,
It is not easy to install or be difficult to install.Additionally, this adjusting means includes adjustment seat 5 ' and adjusting rod 7 ',
And need to arrange not rounded abnormity gathering sill 5 ' 1 in adjustment seat 5 ', so that adjusting rod 7 '
Constituting feed screw nut's structure with spring base 6 ' 1, thus parts are more, structure is complicated, manufactures
Relatively costly.
In view of this, the regulation needing the elastomeric element to heating power expansion valve of the prior art badly fills
Put and make improvement, thus on the one hand reduce the axial length of valve, on the other hand simplify adjusting means
Structure, reduce manufacturing cost.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of heating power expansion valve, this heating power expansion valve
Structure design on the one hand can reduce the axial length that valve is overall, on the other hand can simplify bullet
Property parts the structure of adjusting means, reduce manufacturing cost.
For solving above-mentioned technical problem, the present invention provides a kind of heating power expansion valve, sets including upper end
The valve body of gas tank, the inner chamber of described gas tank is had to be provided with diaphragm；The inside of described valve body is provided with by institute
Stating the valve hole part that diaphragm drives, the bottom of described valve hole part is supported by elastomeric element, and
The bottom of described elastomeric element is supported in adjustment seat by spring base；Described adjustment seat is located at
In the inner chamber in described valve body lower end portion；Described adjustment seat is provided with guide part and external thread part, described
Seal member, described external screw thread it is provided with between guide part with the guiding inwall of relative described valve body
The axial length in portion is less than the axial length of the internal thread part on the valve interior wall coordinated with it.
Preferably, the end face of described adjustment seat offering gathering sill, described spring base is further
It is located in this gathering sill and is supported on the diapire of described gathering sill.
Preferably, it is further provided with between bottom surface and the diapire of described gathering sill of described spring base
Ball, described spring base is supported on the diapire of described gathering sill by described ball.
Preferably, the quantity of described ball is at least three, and between each described ball, described
The most tangent between ball with the sidewall of described gathering sill coordinate.
Preferably, the quantity of described ball is at least three；Offer on the diapire of described gathering sill
There is first locating slot identical with described ball quantity, and the degree of depth of described first locating slot is less than
The diameter of described ball；Each described ball matched in clearance respectively is in each described first locating slot.
Preferably, each described first locating slot is offered along the circumference of the diapire of described gathering sill, and
And extend to the sidewall of described gathering sill.
Preferably, the quantity of described ball is one；The centre of the diapire of described gathering sill
Offering the degree of depth the second locating slot less than described ball diameter, described ball matched in clearance is in institute
State in the second locating slot；Coordinate tangent with described ball is offered on the bottom surface of described spring base
The conical surface.
Preferably, the bottom surface of described spring base is that the diapire with described gathering sill becomes point cantact or line
The arcwall face of contact.
Preferably, the shape of described spring base is ring-type further.
Preferably, described guide part is located at the axially inner side of described external thread part, and described outer spiral shell
The external diameter in stricture of vagina portion more than the external diameter of described guide part, the internal diameter of described internal thread part be more than described in lead
The internal diameter of inward wall.
Preferably, the inwall of described valve body is further provided with the outer end of external thread part described in clamping
The jump ring in face.
Preferably, axially external being further provided with of described adjustment seat is connected on described valve body
Sealing nut.
On the basis of existing technology, the adjustment seat of heating power expansion valve provided by the present invention is located at
In the inner chamber in described valve body lower end portion；Described adjustment seat is provided with guide part and external thread part, described
Seal member, described external screw thread it is provided with between guide part with the guiding inwall of relative described valve body
The axial length in portion is less than the axial length of the internal thread part on the valve interior wall coordinated with it.
When regulating the decrement of elastomeric element, by the screw thread between external thread part and internal thread part
Coordinate, rotate adjustment seat so that adjustment seat is moved vertically, and then promote spring base edge
Axially it is moved, thus realizes regulating the purpose of the decrement of elastomeric element.Additionally, this tune
Joint seat is provided with guide part, is provided with seal member between the guiding inwall of this guide part and valve body, from
And achieve the purpose that the inner chamber to valve body seals.In the present invention, whole due to adjustment seat
Body is in the inside of valve body, thus the overall axial length of heating power expansion valve is reduced, and has
It is beneficial to realize the purpose of heating power expansion valve miniaturization.Additionally, compared with prior art, the present invention
Eliminate the structure design of adjusting rod, achieve regulation elastomeric element pressure only by regulation toilet
The purpose of contracting amount, thus decrease the quantity of parts；Further, by adjustment seat and valve body it
Between threaded engagement realize adjustment seat purpose axially movable, thus also eliminate prior art
In not rounded abnormity gathering sill and feed screw nut's structure of adapting with this, thus simplify tune
The structure of regulating device, reduces manufacturing cost.
In sum, on the one hand heating power expansion valve provided by the present invention can reduce valve entirety
Axial length, on the other hand can simplify the structure of the adjusting means of elastomeric element, reduces and manufactures
Cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of heating power expansion valve in prior art；
Fig. 2 is the structural representation of the adjusting means of Fig. 1 Elastic parts；
Fig. 3 is the structural representation of heating power expansion valve in the first embodiment of the present invention；
Fig. 3-1 be in Fig. 3 the AA of heating power expansion valve to sectional view；
Fig. 4 is the adjusting means of the elastomeric element of heating power expansion valve in the second embodiment of the present invention
Structural representation；
Fig. 4-1 is the top view of adjusting means in Fig. 4；
Fig. 5 is the adjusting means of the elastomeric element of heating power expansion valve in the third embodiment of the present invention
Structural representation；
Fig. 5-1 is the top view of adjusting means in Fig. 5；
Fig. 6 is the adjusting means of the elastomeric element of heating power expansion valve in the 4th kind of embodiment of the present invention
Structural representation；
Fig. 6-1 is the top view of adjusting means in Fig. 6；
Fig. 7 is the adjusting means of the elastomeric element of heating power expansion valve in the 5th kind of embodiment of the present invention
Structural representation；
Fig. 7-1 is the top view of adjusting means in Fig. 7.
Wherein, the corresponding relation between Fig. 1 and Fig. 2 reference and component names is:
1 ' valve body；1 ' 1 valve port；
2 ' 1 diaphragms；2 ' 2 epicoeles；2 ' 3 cavity of resorptions；2 ' 4 gas tank seats；2 ' 5 gas tank lids；
3 ' 1 valve hole parts；3 ' 2 driver blades；4 ' 1 capillary tubies；
5 ' adjustment seats；5 ' 1 not rounded abnormity gathering sills；
6 ' elastomeric elements；6 ' 1 spring bases；
7 ' adjusting rods；7 ' 1 seal figure；7 ' 2 jump rings；
8 ' bonnets.
In Fig. 3 to Fig. 7-1, the corresponding relation between reference and component names is:
Wherein, the corresponding relation between Fig. 1 and Fig. 2 reference and component names is:
1 valve body；11 valve ports；12 inner chambers；13 guide inwall；14 internal thread parts；
21 diaphragms；22 epicoeles；23 cavity of resorptions；24 gas tank seats；25 gas tank lids；
31 valve hole parts；32 driver blades；
4 capillary tubies；
5 adjustment seats；51 guide parts；52 external thread parts；53 gathering sills；531 first locating slots；
532 second locating slots；
6 elastomeric elements；61 spring bases；The 61a conical surface；61b arcwall face；62 balls；
71 seal members；72 jump rings；
8 sealing nuts.
Detailed description of the invention
The core of the present invention is for providing a kind of heating power expansion valve, and the structure of this heating power expansion valve designs
On the one hand can reduce the axial length that valve is overall, on the other hand can simplify the tune of elastomeric element
The structure of regulating device, reduces manufacturing cost.
In order to make those skilled in the art be more fully understood that technical scheme, knot below
The present invention is described in further detail to close the drawings and specific embodiments.
Refer to Fig. 3 and Fig. 3-1, Fig. 3 is heating power expansion valve in the first embodiment of the present invention
Structural representation；Fig. 3-1 be in Fig. 3 the AA of heating power expansion valve to sectional view.
In the present invention, as it is shown on figure 3, this heating power expansion valve includes valve body 1, valve body 1
Upper end connects the gas tank including the gentle case lid of gas tank seat 24 25, and the inner chamber of this gas tank is by diaphragm
21 are divided into epicoele 22 and cavity of resorption 23；As it is shown in figure 1, epicoele 22 is by being filled with coolant also
It is connected with temperature-sensitive bag by capillary tube 4.Additionally, as it is shown on figure 3, the inner chamber 12 of valve body 1
In be formed with valve port 11, this valve port 11 is combined with valve hole part 31, the upper end of valve hole part 31
Connect and have the driver blade 32 being positioned in cavity of resorption 23；As it is shown on figure 3, the lower end of valve hole part 31
Portion supports flexible parts 6, and this elastomeric element 6 is supported in adjustment seat 5.Need explanation
, in the operation principle of the heating power expansion valve of the present invention and work process and above prior art
The operation principle of heating power expansion valve is identical with work process, does not repeats them here.
In the basic technology scheme of the present invention, as it is shown on figure 3, adjustment seat 5 is located at valve body 1
In the inner chamber 12 of bottom；Adjustment seat 5 is provided with guide part 51 and external thread part 52, guide part
Seal member 71, external thread part 52 it is provided with between 51 with the guiding inwall 13 of relative valve body 1
Axial length less than the axial length of the internal thread part 14 on valve body 1 inwall that coordinates with it.
During the decrement of regulation elastomeric element 6, by external thread part 52 and internal thread part 14 it
Between threaded engagement, rotate adjustment seat 5 so that adjustment seat 5 is moved vertically, and then
Spring base 61 is promoted to be moved vertically, thus realize the decrement of regulation elastomeric element 6
Purpose.Additionally, this adjustment seat 5 is provided with guide part 51, this guide part 51 is led with valve body 1
Seal member 71 it is provided with, it is achieved thereby that the inner chamber 12 of valve body 1 is carried out between inward wall 13
The purpose sealed.In the present invention, owing to adjustment seat 5 is generally in the inside of valve body 1, because of
And the overall axial length of heating power expansion valve is reduced, it is advantageously implemented heating power expansion valve little
The purpose of type.Additionally, compared with prior art, the present invention eliminates the structure of adjusting rod and sets
Meter, just achieves the purpose of regulation elastomeric element 6 decrement only by adjustment seat 5, thus
Decrease the quantity of parts；Further, by the threaded engagement between adjustment seat 5 and valve body 1
Realize adjustment seat 5 purpose axially movable, thus it is different also to eliminate not rounded of the prior art
Shape gathering sill and the feed screw nut's structure adapted with this, thus simplify the knot of adjusting means
Structure, reduces manufacturing cost.
Further, in above-mentioned basic technology scheme, as it is shown on figure 3, the top of adjustment seat 5
Offering gathering sill 53 on face, spring base 61 is located at further in this gathering sill 53 and is supported in
On the diapire of gathering sill 53.Elastomeric element 6 and spring base 61 can be led by gathering sill 53
To effect, prevent it from radially shaking, thus improve the reliability of axially-movable.
Additionally, further, one is entered between bottom surface and the diapire of gathering sill 53 of spring base 61
Step is provided with ball 62, and spring base 61 is supported on the diapire of gathering sill 53 by ball 62.
In this kind of structure, it is point cantact between the diapire of ball 62 and gathering sill 53, contact area
Little, also it is point cantact between the bottom surface of ball 62 and spring base 61, contact area is little, thus
When rotating adjustment seat 5, due to diapire and the end of spring base 61 of ball 62 and gathering sill 53
Face is point cantact, thus spring base 61 is difficult to rotate along with adjustment seat 5, and then elastic
Parts 6 are difficult to rotate, thus ensure the reliability that valve port 11 is sealed by valve hole part 31.
It should be noted that in the present invention, the diapire of gathering sill 53 and sidewall, ball 62
Outer surface, the diapire of spring base 61 need to keep smooth, thus as much as possible reduce contact
Coefficient of friction between parts, reduces frictional force, ensures spring base 61 and elastic as much as possible
Part 6 is difficult to rotate with adjustment seat 5, and valve port 11 is sealed by final guarantee valve hole part 31
Reliability.
In above-mentioned basic technology scheme, improvement further can be made, thus obtain the present invention
The first embodiment.Specifically, as shown in Fig. 3 and Fig. 3-1, the quantity of ball 62 is at least
It is between three, and each ball 62, the most tangent between ball 62 and the sidewall of gathering sill 53 joins
Close.
In this first embodiment, as shown in figure 3-1, the quantity of ball 62 is three, and
And the most tangent cooperation, and each ball 62 is all the most tangent with the sidewall of gathering sill 53 coordinates, because of
And spring base 61 can be provided the stable support of a kind of at least 3, it is ensured that spring base 61
Reliability axially movable.Additionally, along with rotating adjustment seat 5, the ball in gathering sill 53
62 roll, thus are rolling friction between the bottom surface of ball 62 and spring base 61, friction
Coefficient is little, thus further ensures spring base 61 and elastomeric element 6 will not be with adjustment seat 5
Rotate.
Additionally, in above-mentioned basic technology scheme, it is also possible to make improvement further, thus obtain
The second embodiment to the present invention.Specifically, refer to Fig. 4 and Fig. 4-1, Fig. 4 is this
The structural representation of the adjusting means of the elastomeric element of heating power expansion valve in invention the second embodiment
Figure；Fig. 4-1 is the top view of adjusting means in Fig. 4.
In this second embodiment, as shown in Fig. 4 and Fig. 4-1, the quantity of ball 62 is at least
It it is three；First locating slot identical with ball 62 quantity is offered on the diapire of gathering sill 53
531, and the degree of depth of the first locating slot 531 is less than the diameter of ball 62；Between each ball 62 difference
Gap is matched with in each first locating slot 531.Owing to ball 62 matched in clearance is in each the first location
In groove 531, rotating thus with adjustment seat 5, each ball 62 can roll, and then
Make to be rolling friction between the bottom surface of ball 62 and spring base 61, thus reduce therebetween
Frictional force.Additionally, each ball 62 is all located in the first locating slot 531, its relative position
The most fixing, thus can be that spring base 61 provides a kind of stable support being at least at 3, protect
Card spring base 61 reliability axially movable.
Further, as shown in Fig. 4 and Fig. 4-1, each first locating slot 531 is along gathering sill
The circumference of the diapire of 53 is offered, and extends to the sidewall of gathering sill 53.This kind of structure design
Can be easy to offering of the first locating slot 531, the centre of sphere that simultaneously can expand each ball 62 is true
Determine Area of bearing, thus improve the stability that spring base 61 is axially supported further.
On the basis of above-mentioned basic technology scheme, it is also possible to make improvement further, thus obtain
The third embodiment to the present invention.Specifically, refer to Fig. 5 and Fig. 5-1, Fig. 5 is this
Invent the structural representation of the adjusting means of the elastomeric element of heating power expansion valve in the third embodiment
Figure；Fig. 5-1 is the top view of adjusting means in Fig. 5.
As shown in Fig. 5 and Fig. 5-1, the quantity of ball 62 is one；The diapire of gathering sill 53
Centre offer the degree of depth less than the second locating slot 532 of ball 62 diameter, ball 62
Matched in clearance is in the second locating slot 532；Offer on the bottom surface of spring base 61 and ball 62
The conical surface 61a of tangent cooperation.
In said structure, the diapire of ball 62 and the second locating slot 532 is point cantact, rolling
Pearl 62 is tangent with conical surface 61a to be coordinated, thus is also point cantact, and contact area is little, works as adjustment seat
During 5 rotation, it is possible to prevent spring base 61 and elastomeric element 6 to rotate along with adjustment seat 5.
Additionally, the structure of the second locating slot 532 and conical surface 61a can be designed so that ball 62 is the most fixed
It is positioned at gathering sill 53 and the shaft core position of spring base 61, thus ensures spring base 61 support
Stability.Furthermore, between ball 62 with conical surface 61a, the tangent design coordinated, works as valve hole part
31 act on the power of elastomeric element 6 uneven time, this spring base 61 can be with its conical surface 61a
Occur slightly to rotate around ball 62, such that it is able to elastomeric element 6 is played cushioning effect.
On the basis of above-mentioned basic technology scheme, it is also possible to make improvement further, thus obtain
The 4th kind of embodiment and the 5th kind of embodiment to the present invention.Specifically, refer to Fig. 6, figure
6-1, Fig. 7 and Fig. 7-1, Fig. 6 are the elasticity of heating power expansion valve in the 4th kind of embodiment of the present invention
The structural representation of the adjusting means of parts；Fig. 6-1 is the top view of adjusting means in Fig. 6；
Fig. 7 is the knot of the adjusting means of the elastomeric element of heating power expansion valve in the 5th kind of embodiment of the present invention
Structure schematic diagram；Fig. 7-1 is the top view of adjusting means in Fig. 7.
In the 4th kind of embodiment, as shown in Fig. 6 and Fig. 6-1, the bottom surface of spring base 61 is arc
Shape face 61b, this arcwall face 61b are point cantact with the diapire of gathering sill 53, and contact area is little,
Frictional force is little, thus when adjustment seat 5 rotates, it is ensured that spring base 61 and elastomeric element 6
Rotate the most therewith.
In the 5th kind of embodiment, as shown in Fig. 7 and Fig. 7-1, the shape of spring base 61 is entered
One step is ring-type.This kind of structure design can also reduce the diapire of spring base 61 and gathering sill 53
Between contact area, reduce frictional force, thus when adjustment seat 5 rotates, it is ensured that bullet
Spring abutment 61 and elastomeric element 6 rotate the most therewith.
Additionally, in any of the above-described kind of technical scheme, it is also possible to make improvement further.Specifically
Ground, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, guide part 51 is located at external thread part
The axially inner side of 52, and the external diameter of external thread part 52 is more than the external diameter of guide part 51, thus
It is formed with step between external thread part 52 and guide part 51；Adapt with this, as it is shown on figure 3,
The internal diameter of internal thread part 14 is more than the internal diameter of guiding inwall 13, thus internal thread part 14 and guiding
It is formed with another step between inwall 13；Above-mentioned two step matches, so that it is determined that regulation
The scope of seat 5 lateral movement axially inward.Additionally, as it is shown on figure 3, on the inwall of valve body 1
Being further provided with the jump ring 72 of the outer face of clamping external thread part 52, this jump ring 72 may determine that
The scope that adjustment seat 5 is moved axially outward.
Furthermore, as it is shown on figure 3, axially external being further provided with of adjustment seat 5 is connected to valve body
Sealing nut 8 on 1, thus further the inner chamber 12 of valve body 1 is played sealing function, with
Time be possible to prevent water or dirt to corrode adjustment seat 5.
Above a kind of heating power expansion valve provided by the present invention is described in detail.Herein
Apply specific case principle and the embodiment of the present invention are set forth, above example
Explanation be only intended to help to understand method and the core concept thereof of the present invention.It is right to it should be pointed out that,
For those skilled in the art, under the premise without departing from the principles of the invention,
The present invention can also be carried out some improvement and modification, these improve and modification also falls into the present invention
In scope of the claims.
Claims (11)
1. a heating power expansion valve, is provided with the valve body (1) of gas tank, described gas tank including upper end
Inner chamber be provided with diaphragm (21)；The inside of described valve body (1) is provided with by described diaphragm (21)
The valve hole part (31) driven, the bottom of described valve hole part (31) is by elastomeric element (6)
Support, and the bottom of described elastomeric element (6) is supported in adjustment seat by spring base (61)
(5) on；It is characterized in that, described adjustment seat (5) is located at described valve body (1) bottom
In inner chamber (12)；Described adjustment seat (5) is provided with guide part (51) and external thread part (52),
It is provided with between described guide part (51) with the guiding inwall (13) of relative described valve body (1)
Seal member (71), the axial length of described external thread part (52) is less than the valve body coordinated with it
(1) axial length of the internal thread part on inwall (14)；
Gathering sill (53), described spring base (61) is offered on the end face of described adjustment seat (5)
It is located at further in this gathering sill (53) and is supported on the diapire of described gathering sill (53),
Described elastomeric element (6) and described spring base (61) are guided by described gathering sill (53),
To prevent both from radially rocking.
2. heating power expansion valve as claimed in claim 1, it is characterised in that described spring base
(61) it is further provided with ball (62) between bottom surface and the diapire of described gathering sill (53),
Described spring base (61) is supported in the end of described gathering sill (53) by described ball (62)
On wall.
3. heating power expansion valve as claimed in claim 2, it is characterised in that described ball (62)
Quantity be at least three, and between each described ball (62), described ball (62) and institute
State the most tangent cooperation between the sidewall of gathering sill (53).
4. heating power expansion valve as claimed in claim 2, it is characterised in that described ball (62)
Quantity be at least three；Offer on the diapire of described gathering sill (53) and described ball (62)
The first locating slot (531) that quantity is identical, and the degree of depth of described first locating slot (531) is less than
The diameter of described ball (62)；Each described ball (62) respectively matched in clearance is in each described the
In one locating slot (531).
5. heating power expansion valve as claimed in claim 4, it is characterised in that each described first
Locating slot (531) is offered along the circumference of the diapire of described gathering sill (53), and extends to institute
State the sidewall of gathering sill (53).
6. heating power expansion valve as claimed in claim 2, it is characterised in that described ball (62)
Quantity be one；The centre of the diapire of described gathering sill (53) offers the degree of depth and is less than
Second locating slot (532) of described ball (62) diameter, described ball (62) matched in clearance
In described second locating slot (532)；Offer and institute on the bottom surface of described spring base (61)
State the conical surface (61a) of ball (62) tangent cooperation.
7. heating power expansion valve as claimed in claim 1, it is characterised in that described spring base
(61) bottom surface is the arc that the diapire with described gathering sill (53) becomes point cantact or linear contact lay
Face (61b).
8. heating power expansion valve as claimed in claim 1, it is characterised in that described spring base
(61) shape is ring-type further.
9. the heating power expansion valve as described in any one of claim 1 to 8, it is characterised in that
Described guide part (51) is located at the axially inner side of described external thread part (52), and described outer spiral shell
The external diameter in stricture of vagina portion (52) is more than the external diameter of described guide part (51), described internal thread part (14)
Internal diameter more than the internal diameter of described guiding inwall (13).
10. the heating power expansion valve as described in any one of claim 1 to 8, it is characterised in that
The outer face of external thread part described in clamping (52) it is further provided with on the inwall of described valve body (1)
Jump ring (72).
11. heating power expansion valves as described in any one of claim 1 to 8, it is characterised in that
It is close that described adjustment seat (5) axially external is further provided with being connected on described valve body (1)
Envelope nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258690.7A CN102979945B (en) | 2011-09-02 | 2011-09-02 | A kind of heating power expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110258690.7A CN102979945B (en) | 2011-09-02 | 2011-09-02 | A kind of heating power expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979945A CN102979945A (en) | 2013-03-20 |
| CN102979945B true CN102979945B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110258690.7A Active CN102979945B (en) | 2011-09-02 | 2011-09-02 | A kind of heating power expansion valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343994A (en) * | 2013-07-31 | 2015-02-11 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN105805989B (en) * | 2014-12-29 | 2019-01-29 | 浙江三花制冷集团有限公司 | Heating power expansion valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256117A (en) * | 1968-06-03 | 1971-12-08 | Universal American Corp | Refrigeration system |
| CN2233013Y (en) * | 1994-03-27 | 1996-08-14 | 莫龙飞 | Spring-like cork |
| CN1510364A (en) * | 2002-12-20 | 2004-07-07 | ��ʽ���粻������ | Expansion velves |
| CN2916302Y (en) * | 2006-04-19 | 2007-06-27 | 谢启标 | Control valve for heating device |
-
2011
- 2011-09-02 CN CN201110258690.7A patent/CN102979945B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256117A (en) * | 1968-06-03 | 1971-12-08 | Universal American Corp | Refrigeration system |
| CN2233013Y (en) * | 1994-03-27 | 1996-08-14 | 莫龙飞 | Spring-like cork |
| CN1510364A (en) * | 2002-12-20 | 2004-07-07 | ��ʽ���粻������ | Expansion velves |
| CN2916302Y (en) * | 2006-04-19 | 2007-06-27 | 谢启标 | Control valve for heating device |
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| CN102979945A (en) | 2013-03-20 |
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