CN105485979B - Heating power expansion valve and heat pump system with the heating power expansion valve - Google Patents
Heating power expansion valve and heat pump system with the heating power expansion valve Download PDFInfo
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- CN105485979B CN105485979B CN201410472779.7A CN201410472779A CN105485979B CN 105485979 B CN105485979 B CN 105485979B CN 201410472779 A CN201410472779 A CN 201410472779A CN 105485979 B CN105485979 B CN 105485979B
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Abstract
The present invention provides a kind of heating power expansion valve and the heat pump system with the heating power expansion valve.Heating power expansion valve includes：Valve body, including power head, input end, outlet end, the first valve chamber, the second valve chamber and driving hole, first valve chamber and driving hole are respectively positioned between power head and the second valve chamber, the radial outside of first valve chamber position driving hole, input end is connected to the first valve chamber, outlet end is connected to the second valve chamber, and outlet end is connected to the first valve chamber by check-valve port, and the first valve chamber is connected to the second valve chamber by throttle orifice；Main valve plug includes main valve head and main valve stem, and main valve stem is slidably matched with driving hole, and main valve head controls the aperture of throttle orifice；Nonreturn valve core, including unidirectional valve head and unidirectional valve rod, nonreturn valve core is set in the first valve chamber and nonreturn valve core is located at the radial outside of main valve stem, the opening and closing of unidirectional valve head control check-valve port, wherein, there is common vertical line section between the axis of main valve plug and the axis of nonreturn valve core.The structure of the heating power expansion valve is more reasonable.
Description
Technical field
The present invention relates to apparatus of air conditioning fields, more particularly, to a kind of heating power expansion valve and have the heating power swollen
The heat pump system of swollen valve.
Background technology
Heat pump system can freeze at summer, and when winter can heat, and what is leaned on is the commutation of four-way reversing valve to switch
The flow direction of refrigerant, and reducing pressure by regulating flow is heating power expansion valve, carrying out reducing pressure by regulating flow using single heating power expansion valve just will appear
Refrigerant flow can be automatically adjusted when refrigeration, valve can cut off refrigerant circuit when heating.So in initial start, in order to anti-
Only heating power expansion valve cuts off refrigerating circuit, and it is in parallel with heating power expansion valve to install a check valve additional in system pipeline.By continuous
Improvement, occur the heating power expansion valve of the built-in check valve one-way valve designs to heating power expansion valve valve inner at present.It is interior
The heating power expansion valve for setting check valve installs bypass channel additional in the design of the side of valve port, is a gasket or a sealing block in channel.
When cooling, steel ball or sealing block are pushed to by-pass prot and shut valve port by positive high pressure condensing pressure, are adjusted by the action of spool
Amount of restriction；When heating, reversed high pressure condensing pressure at check-valve port steel ball or sealing block it is open-top, to open refrigerant
Channel.Reduce leakage point, also reduces cost.
Flow signal when Fig. 1 is the heat pump system refrigeration of the heating power expansion valve using built-in check valve in the prior art
Figure.Flow diagram when Fig. 2 is heat pump system heating shown in FIG. 1.As depicted in figs. 1 and 2, in heat pump system, compression
The inlet and outlet of machine 10 ' is connected to the first port of four-way reversing valve 20 ' and second port respectively；The first of indoor unit 30 '
End is connected to the third port of four-way reversing valve 20 ', the heating power expansion valve that the second end of indoor unit passes through two built-in check valves
50 ' are connected to the first end of outdoor unit 40 ', and the second end of outdoor unit 40 ' is connected to the 4th port of four-way reversing valve 20 '.
As shown in Figure 1, under refrigerating state, the first port of four-way reversing valve 20 ' is connected to third port, and second end
Mouth is connected to the 4th port.The refrigerant flowed out from compressor 10 ' successively flows through four-way reversing valve 20 ', outdoor unit 40 ', built-in
Heating power expansion valve 50 ', indoor unit 30 ', the four-way reversing valve 20 ' of check valve return to compressor 10 ' and form refrigeration cycle.
As shown in Fig. 2, under heating state, the first port of four-way reversing valve 20 ' is connected to the 4th port, and second end
Mouth is connected to third port.The refrigerant flowed out from compressor 10 ' successively flows through four-way reversing valve 20 ', indoor unit 30 ', built-in
Heating power expansion valve 50 ', outdoor unit 40 ', the four-way reversing valve 20 ' of check valve return to compressor 10 ' and form heating cycle.
Fig. 3 is that the heating power expansion valve of the built-in check valve of the prior art is in the schematic cross-sectional view under refrigerating state.
Fig. 4 is the schematic cross-sectional view that the heating power expansion valve of built-in check valve shown in Fig. 3 is under heating state.In Fig. 3 and Fig. 4
In, 1 ' it is heating power expansion valve input end, 2 ' be the heating power expansion valve bypass flow channel in parallel with valve port, 3 ' is arranged in bypass flow channel
Valve port, 4 ' be the spool for being opened and closed bypass flow channel valve, 5 ' be bypass pilot seal plug, 6 ' be sealing ring, 7 ' be thermal expansion
Valve automatic adjustment refrigerant flow spool, 8 ' be the heating power expansion valve adjusting refrigerant flow rate in parallel with bypass flow channel valve
Mouth, 9 ' are expansion valve regulation inner cavities.
As shown in figure 3, when refrigeration system is operated in refrigerating state, the refrigerant of normal temperature high voltage is from heating power expansion valve import
End 1 ' flows into valve, valve port 8 ' and bypass flow channel 2 ' is flowed to, since 3 ' sectional area of bypass flow channel valve port is pre-large post-small, in refrigerant
Under the action of high pressure, spool 4 ' automatically closes valve port 3 ', and normal temperature high voltage refrigerant is all flowed out from valve port 8 ', after reducing pressure by regulating flow
The refrigerant for becoming Room-temperature low-pressure flows out valve outlet end by adjusting inner cavity 9 ', is equivalent to the flow tune of general heating power expansion valve
Section acts on.
As shown in figure 4, when system is operated in heating state, the refrigerant of high temperature and pressure is on the one hand from heating power expansion valve tune
The outlet end at section 9 ' place of inner cavity enters in valve, and under the action of refrigerant high pressure, power is acted to the spool 4 ' of bypath valve,
Spool 4 ' is promoted to move downward, to open bypath valve, refrigerant flows into by-pass 2 ' from valve 3 ' and flows into valve input end again
1 ' finally flows out valve body, to ensure that refrigerant flow path is unimpeded.Wherein, spool 7 ' is either approached to turn off or is opened, throttling
Mouth sectional area far smaller than bypasses sectional area, can ignore.
In the implementation of the present invention, inventor has found, the heating power expansion valve of the built-in check valve of the above prior art
It has as a drawback that：
The side in main valve chamber is arranged in by-pass structure, and to ensure that refrigerant is bordering on zero pressure drop in heating power expansion valve
By valve body, by-pass sectional area cannot differ too big with import end cross-sectional area, virtually increase valve volume, while to increase
Add parts, also increases cost；
As soon as more by-passes, the possibility that refrigerant leaks at also more one, and gasket or sealing block are added,
Cost is more relatively high；And due to the needs of valve body process and assemble, pilot hole is added on valve body, in spite of sealing ring
It seals with sealing-plug, but increases the possibility that refrigerant leaks at this to a certain extent, increase testing cost.
Invention content
Present invention aims at a kind of heating power expansion valve of offer and the heat pump system with the heating power expansion valve, air-conditioning systems
System, the heating power expansion valve can reduce the volume of heating power expansion valve.
First aspect present invention provides a kind of heating power expansion valve, including：Valve body, valve body include power head, input end, go out
Mouth end, the first valve chamber, the second valve chamber and driving hole, the first valve chamber and driving hole are respectively positioned between power head and the second valve chamber, the
One valve chamber is located at the radial outside of driving hole, and input end is connected to the first valve chamber, and outlet end is connected to the second valve chamber, and outlet end
It is connected to by check-valve port with the first valve chamber, the first valve chamber is connected to the second valve chamber by throttle orifice；Main valve plug, main valve plug packet
Main valve head and main valve stem are included, main valve stem is arranged in driving hole and is slidably matched with driving hole, and main valve head is set to the second valve chamber
Interior and be drivingly connected by main valve stem and power head, main valve head coordinates with throttle orifice to control the aperture of throttle orifice；Unidirectionally
Spool, nonreturn valve core include unidirectional valve head and unidirectional valve rod, and nonreturn valve core is set in the first valve chamber and nonreturn valve core is located at master
The radial outside of valve rod, unidirectional valve head and check-valve port coordinate to control the opening and closing of check-valve port, wherein the axis of main valve plug with
There is common vertical line section between the axis of nonreturn valve core.
Further, the first plane limited in the axis of main valve plug and common vertical line section, closed form is in check-valve port
Both sides of the nonreturn valve core across the first plane and positioned at the first plane when state.
Further, the axis coaxle of the axis of driving hole and valve body, the axis of main valve plug and the axis phase of nonreturn valve core
It is mutually vertical.
Further, the first valve chamber communicates with each other with driving hole.
Further, the first valve chamber has open to which input end is connected to the first valve chamber towards the side of input end, single
It is oppositely arranged to valve port and opening, nonreturn valve core is set between open and check-valve port.
Further, the axis coaxle of the axis of nonreturn valve core and input end；Alternatively, the axis and input end of nonreturn valve core
Axis it is parallel；Alternatively, the axis of nonreturn valve core and the axis of input end have angle.
Further, heating power expansion valve further includes nonreturn valve core guide sleeve, and nonreturn valve core guide sleeve is fixed on the first valve chamber
Interior, nonreturn valve core guide sleeve includes the sleeve for having pilot hole, and unidirectional valve rod is set in pilot hole and matches with pilot hole sliding
It closes, fluid channel is provided between the inside and/or nonreturn valve core guide sleeve and the wall surface of the first valve chamber of nonreturn valve core guide sleeve.
Further, nonreturn valve core guide sleeve further includes being arranged in the periphery of sleeve, along the axial direction of nonreturn valve core guide sleeve
The multiple raised lines for extending and being intervally installed, fluid channel include the axial pass trough formed between multiple raised lines.
Further, the axis of the axis of the input end of valve body and valve body has the first distance；The outlet of valve body and/or
The axis at end and the axis of valve body have second distance.
Further, the axis of the axis of the input end of valve body and valve body has the first distance, the axis of the outlet end of valve body
The axis of line and valve body have second distance, wherein the first distance is equal with second distance, and the axis of the input end of valve body and
The axis of the outlet end of valve body is located at the same side of the axis of valve body.
Second aspect of the present invention provides a kind of heat pump system, and the heat pump system includes heating power expansion valve, wherein the heat
Power expansion valve is the heating power expansion valve described in any one of first aspect present invention.
Heating power expansion valve according to the present invention and heat pump system with the heating power expansion valve, due to the of heating power expansion valve
One valve chamber and driving hole are respectively positioned between power head and the second valve chamber, and the first valve chamber is located at the radial outside of driving hole, check valve
Core is set in the first valve chamber and nonreturn valve core is located at the radial outside of main valve stem, and the axis of the axis of main valve plug and nonreturn valve core
There is common vertical line section between line, therefore, sufficient installation space is provided to the first valve chamber in the radial outside of driving hole, it can be with
By-pass structure is arranged in the first valve chamber, that is to say, that by-pass structure can be arranged in valve inner without in main valve
By-pass structure is arranged in the second valve chamber side where head, to which by-pass structure be arranged in the case where not increasing the volume of valve body,
Keep the structure of heating power expansion valve more reasonable.
Further, since nonreturn valve core is set in the first valve chamber, and the first valve chamber passes through the opening towards input end
It is directly connected to input end, therefore, it is not necessary to specially open up by-pass on valve body for installation nonreturn valve core, but directly utilizes
The channel of input end, to which the heating power expansion valve can reduce the volume of heating power expansion valve.
In addition, due to not opening up by-pass, come to the outer of by-pass without setting bypass pilot seal plug and sealing ring
End is sealed, so as to reduce the production cost of heating power expansion valve.
Further, it is thus also avoided that the refrigerant on the valve body of existing heating power expansion valve at pilot seal plug leaked
May, reduce testing cost.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Flow signal when Fig. 1 is the heat pump system refrigeration of the heating power expansion valve using built-in check valve in the prior art
Figure；
Flow diagram when Fig. 2 is heat pump system heating shown in FIG. 1；
Fig. 3 is that the heating power expansion valve of the built-in check valve of the prior art is in the schematic cross-sectional view under refrigerating state；
Fig. 4 is the schematic cross-sectional view that the heating power expansion valve of built-in check valve shown in Fig. 3 is under heating state；
Fig. 5 is the main structure diagram according to the heating power expansion valve of first preferred embodiment of the invention；
Fig. 6 is the side structure schematic view of heating power expansion valve shown in fig. 5；
Fig. 7 is the overlooking structure diagram of heating power expansion valve shown in fig. 5；
Fig. 8 is B-B direction broken section structural schematic diagram when heating power expansion valve shown in fig. 5 is in positive refrigerating state；
Fig. 9 is B-B direction broken section structural schematic diagram when heating power expansion valve shown in fig. 5 is in reversed pass-through state；
Figure 10 is the D-D of heating power expansion valve shown in fig. 5 to broken section structural schematic diagram；
Figure 11 is the dimensional structure diagram of the nonreturn valve core of heating power expansion valve shown in fig. 5；
Figure 12 is the main structure diagram of nonreturn valve core shown in Figure 11；
Figure 13 is the side structure schematic view of Figure 12；
Figure 14 is the dimensional structure diagram of the nonreturn valve core guide sleeve of heating power expansion valve shown in fig. 5；
Figure 15 is the main structure diagram of nonreturn valve core guide sleeve shown in Figure 14；
Figure 16 is the side structure schematic view of Figure 15；
Figure 17 is the main structure diagram according to the heating power expansion valve of second preferred embodiment of the invention；
Figure 18 is the side structure schematic view of heating power expansion valve shown in Figure 17；
Figure 19 is the E-E of heating power expansion valve shown in Figure 17 to schematic cross-sectional view；
Figure 20 is the main structure diagram according to the heating power expansion valve of third preferred embodiment of the invention；
Figure 21 is the side structure schematic view of heating power expansion valve shown in Figure 20；
Figure 22 is the F-F of heating power expansion valve shown in Figure 21 to schematic cross-sectional view.
Specific implementation mode
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in the present specification using belong to "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
As described in background technology, the heating power expansion valve of the prior art is because opening up the bypass for installing nonreturn valve core
Road and there are a series of technical problem, for this purpose, the preferred embodiment of the present invention proposes a kind of heating power expansion valve and has the heat
The heat pump system of power expansion valve.
As shown in Fig. 5 to Figure 22, heating power expansion valve of the invention includes mainly valve body 7, main valve plug 6 and nonreturn valve core 3.Institute
State valve body 7 include power head 1, input end, outlet end, the first valve chamber C, the second valve chamber D and driving hole 5, the first valve chamber C and
The driving hole 5 is respectively positioned between the power head 1 and the second valve chamber D, and the first valve chamber C is located at the driving hole 5
Radial outside, the input end is connected to the first valve chamber C, and the outlet end is connected to the second valve chamber D, and described
Outlet end is connected to the first valve chamber C by check-valve port B, and the first valve chamber C and the second valve chamber D passes through throttle valve
Mouth A connections.The main valve plug 6 includes main valve head 61 and main valve stem 62, the main valve stem 62 be arranged in the driving hole 5 and with
The driving hole 5 is slidably matched, the main valve head 61 be set in the second valve chamber D and by the main valve stem 62 with it is described
Power head 1 is drivingly connected, and the main valve head 61 and throttle orifice A coordinates to control the aperture of the throttle orifice A.It is described
Nonreturn valve core 3 includes unidirectional valve head 31 and unidirectional valve rod 32, and the nonreturn valve core 3 is set in the first valve chamber C and described
Nonreturn valve core 3 is located at the radial outside of the main valve stem 62, and the unidirectional valve head 31 and check-valve port B coordinates to control
State the opening and closing of check-valve port B, wherein there is common vertical line between the axis of the main valve plug 6 and the axis of the nonreturn valve core 3
Section.
Since the first valve chamber C and driving hole 5 of heating power expansion valve are respectively positioned between power head 1 and the second valve chamber D, the first valve
Chamber C is located at the radial outside of driving hole 5, and nonreturn valve core 3 is set in the first valve chamber C and nonreturn valve core 3 is located at main valve stem 62
Radial outside, and there is common vertical line section between the axis of main valve plug 6 and the axis of nonreturn valve core 3, therefore, in the diameter of driving hole 5
It gives the first valve chamber C to provide sufficient installation space outward, by-pass structure can be arranged in the first valve chamber C, that is,
It says, by-pass structure can be arranged inside valve body 7 without in the second valve chamber D sides setting bypass knot where main valve head 61
Structure keeps the structure of heating power expansion valve more reasonable to which by-pass structure be arranged in the case where not increasing the volume of valve body 7.
Each embodiment further illustrated the present invention respectively below in conjunction with attached drawing.
Fig. 5 to Figure 16 diagrammatically illustrates the structure of first preferred embodiment of the invention.
As shown in Fig. 5 to Figure 10, in the present embodiment, driving hole 5 is coaxially disposed with valve body 7.The axis of main valve plug 6 and unidirectional
The axis of spool 3 is mutually perpendicular to.The setting is conducive to the design and processing of heating power expansion valve, is also beneficial to the action of nonreturn valve core 3
Flexible not bite.
The axis of the input end of valve body 7 has the first distance, the axis and valve of the outlet end of valve body 7 with the axis of valve body 7
The axis of body 7 has second distance, wherein the first distance is equal with second distance, and the axis and valve body of the input end of valve body 7
The axis of 7 outlet end is located at the same side of the axis of valve body 7.The setting is conducive to the design and processing of heating power expansion valve.Certainly,
In unshowned embodiment, aforementioned first distance and second distance can also be different.
The first valve chamber C is arranged with communicating with each other with driving hole 5 in the present embodiment.As shown in Figure 10, which makes driving hole 5
It is connected to input end, the high-pressure refrigerant from input end can flow to the orifice A of valve body 7, to carry out reducing pressure by regulating flow shape
At low pressure refrigerant, so as to make full use of the inner space of valve body 7, and the setting parts are few, simple in structure, can be with
Reduce the volume of heating power expansion valve as much as possible, production cost has larger decline.
As shown in Figure 8 and Figure 9, the first valve chamber C has open to input end and the first valve chamber C towards the side of input end
Connection, check-valve port B are oppositely arranged with opening, and nonreturn valve core 3 is set between open and check-valve port B.
Since nonreturn valve core 3 is set in the first valve chamber C, and the first valve chamber C by towards input end it is open directly with
Input end be connected to, therefore, it is not necessary to for installation nonreturn valve core 3 and by-pass is specially opened up on valve body 7, but be directly utilized into
The channel at mouth end, to which the heating power expansion valve can reduce volume.In addition, due to not opening up by-pass, bypassed without setting
Pilot seal plug and sealing ring are sealed the outer end of by-pass, so as to reduce the production cost of heating power expansion valve.
Further, it is thus also avoided that the possibility that the refrigerant on the valve body of existing heating power expansion valve at pilot seal plug leaks subtracts
Testing cost is lacked.
As shown in Fig. 8 to Figure 10, the axis of nonreturn valve core 3 and the axis coaxle of input end are arranged.The setting is equally advantageous
In the design and processing of valve body 7.Moreover, because the axis of nonreturn valve core 3 and the axis coaxle of input end are arranged, freeze in forward direction
When, the fluid entered from input end can push directly on the closing check-valve port of nonreturn valve core 3 B.
As long as nonreturn valve core 3 can be by the opening towards open end of the first valve chamber C directly using input end as side
Channel, however it is not limited to which nonreturn valve core 3 and input end are coaxial, but the axis of nonreturn valve core 3 can be made relative to the axis of input end
Line is arranged but has interval in the same direction, can also angularly be arranged between the two axis.
In order to which the direction of motion to nonreturn valve core 3 limits, as shown in Fig. 5 to Figure 16, in the present embodiment preferably, heat
Power expansion valve further includes nonreturn valve core guide sleeve 4, and nonreturn valve core guide sleeve 4 is fixed in the first valve chamber C, nonreturn valve core guide sleeve
4 include the sleeve 41 with pilot hole, and unidirectional valve rod 32 is set in pilot hole and is slidably matched with pilot hole, and nonreturn valve core is led
It is provided with fluid channel between the inside and/or nonreturn valve core guide sleeve 4 and the wall surface of the first valve chamber C of set 4.Nonreturn valve core is led
It can be sent into the first valve chamber C by the input end of valve body 7 to set 4, and can will be fixed on by the modes such as being press-fitted or being threadedly coupled
In valve body 7.
In the present embodiment, the nonreturn valve core guide sleeve 4 of heating power expansion valve further includes being arranged in the periphery of sleeve 41 and along list
Multiple raised lines 42 that are axially extending to spool guide sleeve 4 and being intervally installed, fluid channel includes shape between multiple raised lines 42
At axial pass trough.As shown in Figure 14 to Figure 16,4 shape of nonreturn valve core guide sleeve ensures there is foot on the whole at petaloid between petaloid
Enough spaces allow refrigerant that can be bordering on passing through for zero pressure drop.When forward direction refrigeration, the high-pressure refrigerant from input end passes sequentially through
Gap between the aforementioned axial straight slot and driving hole 5 and main valve stem 62 of nonreturn valve core guide sleeve 4 flow to throttle orifice A, simultaneously
Check-valve port B is flowed to by the aforementioned axial straight slot of nonreturn valve core guide sleeve 4.
In a unshowned embodiment, fluid channel can also be arranged in the inside of nonreturn valve core guide sleeve 4, example
Such as, fluid channel can be provided in multiple axial passages in the barrel of the sleeve 41 of nonreturn valve core guide sleeve 4.At another
In unshowned embodiment, fluid channel can also be provided in the cavity wall of the first valve chamber C along 4 axis of nonreturn valve core guide sleeve
To a plurality of groove of setting.
In the present embodiment, in the first plane that the axis of main valve plug 6 is limited with common vertical line section, it is in and closes in check-valve port B
Both sides of the nonreturn valve core 3 across first plane and positioned at the first plane when conjunction state.Nonreturn valve core can be oriented to by the setting
Set 4 and its pilot hole are arranged longer, this is conducive to the axis that nonreturn valve core 3 is kept when nonreturn valve core 3 coordinates with check-valve port B
Position, to ensure the tightness of cooperation between the two.
Preferably, the maximum cross-section area of the unidirectional valve head 31 of nonreturn valve core 3 is more than the unidirectional valve rod 32 of nonreturn valve core 3
Cross-sectional area.The maximum cross-section area of the unidirectional valve head 31 of nonreturn valve core 3 is bigger than 32 cross-sectional area of unidirectional valve rod, on the one hand can protect
Card has reliable draw ratio, on the other hand can guarantee heating power expansion valve 100 under positive refrigerating state, can easily close unidirectional
Valve port B.In addition, the unidirectional valve head 31 of nonreturn valve core 3 is arranged to bulb shape or coniform, to ensure the check valve of nonreturn valve core 3
First 31 can have good sealing with the check-valve port B in valve body 7.
In the present embodiment, the radial section of pilot hole is polygon, the radial section of the unidirectional valve rod 32 of nonreturn valve core 3 with
The radial cross-sectional shape of pilot hole is identical.The setting can prevent nonreturn valve core 3 from being rotated relative to nonreturn valve core guide sleeve 4.Separately
Outside, the lighter material of density may be used in nonreturn valve core 3, and in this case, unidirectional valve rod 32 is arranged to more prismatic and is conducive to subtract
Because 4 two kinds of unlike materials of nonreturn valve core 3 and nonreturn valve core guide sleeve have different thermal expansions when mini system is operated in heating state
Rate and stuck probability.
In addition, in the present embodiment, throttle orifice A is vertical with check-valve port B.The setting is conducive to the processing and manufacturing of valve body 7.
Main valve stem 62 is slidably matched with driving hole 5 in the present embodiment, and the first end of main valve stem 62 is abutted with power head 1, main
The second end of valve rod 62 is fixedly connected with main valve plug 61.
Heating power expansion valve further includes spring base 8 and elastic element 9.Spring base 8 and elastic element 9 are set to the second valve chamber D
It is interior.Main valve head 61 is set between throttle orifice A and spring base 8.Elastic element 9 applies spring base 8 upward power, which makes
The main valve head 61 of main valve plug 6 has the movement tendency towards throttle orifice A always, i.e., elastic element 9, which generates, closes throttle orifice A
Pretightning force.
Power head 1 is located at the top of valve body 7.Power head 1 is gas tank component, and the top of gas tank component has outer balance pipe,
Gas tank component includes diaphragm and the driving member 2 that is arranged below diaphragm, and the upper end of main valve stem 62 is abutted with the bottom of driving member 2.
The main valve head 61 of main valve plug 6 is spherical valve head, and spherical valve head coordinates with throttle orifice A, throttle valve when spherical valve head moves upwards
Mouth A apertures reduce, and the aperture of throttle orifice A increases when spherical valve head moves downward.
The input end of valve body 7 is connected with inlet tube a, and the outlet end of valve body 7 is connected with outlet b.As shown in figure 9, this reality
It applies in example, the outlet end of valve body 7 is connected by one inclined hole of setting with check-valve port B in valve body 7.
When system is in positive refrigerating state as shown in Figure 8, normal temperature high voltage refrigerant passes through the input end with valve body 7
Connected inlet tube a enters in valve body 7, is disposed through the fluid channel of the nonreturn valve core guide sleeve 4 of petaloid, on the one hand flows to
On the one hand throttle orifice A flows to check-valve port B, nonreturn valve core 3 automatically closes check-valve port B under the action of high-pressure refrigerant
It closes, refrigerant is all throttled by throttle orifice A, and outlet b is flowed out to by the outlet end of valve body 7 after throttling.In Fig. 8
Arrow represents refrigerant inflow direction.
When system is in reversed pass-through state (heating state) as shown in Figure 9, normal temperature high voltage refrigerant by with valve
The outlet b of the outlet end connection of body 7 enters in valve body 7, on the one hand enters the second valve chamber D of valve body 7, on the one hand pushes unidirectional
Spool 3 opens check-valve port B, the check valve that refrigerant passes through annular space and petaloid between nonreturn valve core 3 and check-valve port B
The input end that the fluid channel that the inner wall of core guide sleeve 4 and the first valve chamber C are formed flows through valve body 7 most flows out valve through inlet tube a afterwards
Outside body 7, wherein enter refrigerant in the second valve chamber D of valve body 7 by the flow of throttle orifice A relative to from check-valve port B
The flow flowed through is seldom, can ignore.Arrow represents refrigerant outflow direction in Fig. 9.
Figure 17 to Figure 19 diagrammatically illustrates the structure of second preferred embodiment of the invention.
As shown in Figures 17 to 19, the present embodiment and first preferred embodiment the difference is that, the axis of the input end of valve body 7
The axis of line and valve body 7 has the first distance.But the axis of the outlet end of valve body 7 intersects with the axis of valve body 7.The embodiment
In, outlet end and the second valve chamber D are to just, therefore, the outflow of the fluid after more conducively depressurizing.
Other undeclared parts of second real preferred embodiment can be found in the related content of first preferred embodiment.
Figure 20 to Figure 22 diagrammatically illustrates the structure of third preferred embodiment of the invention.
As shown in Figure 20 to Figure 22, the present embodiment and first preferred embodiment the difference is that, the axis of the input end of valve body 7
Line intersects with the axis of valve body 7.The axis of the outlet end of valve body 7 also intersects with the axis of valve body 7.Meanwhile as shown in figure 22, originally
The axis of the axis of nonreturn valve core 3 and input end has angle in embodiment.The setting does not change heating power expansion valve and phase connecting leg
The interface relationship of section, it is more preferable to the versatility of the heating power expansion valve.
Other undeclared parts of third reality preferred embodiment can be found in the related content of first preferred embodiment.
Heating power expansion valve proposed by the present invention is suitable for forward and reverse occasions that can be used such as air-conditioning, heat pump.
The heat pump system of the present embodiment includes heating power expansion valve above-mentioned.
The installation of the heating power expansion valve is connected as common external-balancing thermal expansion valve into heat pump system or air-conditioning system
In system.The inlet tube a of heating power expansion valve is connected to the high-pressure side i.e. condensator outlet of system, and outlet b is connected to the low of system
Pressure side, that is, evaporator inlet, outer balance pipe connect evaporator outlet end, and the temperature-sensitive package bundle hoop of heating power expansion valve is in evaporator outlet
It holds on outer tube wall horizontal position, two heating power expansion valves for only needing model specification the same are asked in a specific embodiment
With reference to figure 1 and Fig. 2, it is only necessary to replace the heating power expansion valve 50 ' of the prior art with the heating power expansion valve of above example.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
The heating power expansion valve by-pass structure can be arranged in valve inner without in the valve chamber side where main valve plug
By-pass structure is set, to which by-pass structure be arranged in the case where not increasing the volume of valve body, makes the structure of heating power expansion valve more
Adduction is managed.Therefore the input end of the open end of first valve chamber of the installation nonreturn valve core of heating power expansion valve towards valve body simultaneously makes import
End be connected to the first valve chamber, to which it is not necessary that the by-pass of nonreturn valve core is specially arranged, therefore, scheme is set compared with the prior art
Structure is counted, parts are few, and valve volume is small, simple in structure, and assembly is easy, and production cost reduces.Also reduce valve body and the external world
The assembly technology hole communicated, reduces the leakage point of valve, improves the air-tightness of valve, reduces quality cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of heating power expansion valve, which is characterized in that including：
Valve body (7), the valve body (7) include power head (1), input end, outlet end, the first valve chamber (C), the second valve chamber (D) and
Driving hole (5), first valve chamber (C) and the driving hole (5) are respectively positioned on the power head (1) and second valve chamber (D)
Between, first valve chamber (C) is located at the radial outside of the driving hole (5), and the input end connects with first valve chamber (C)
Logical, the outlet end is connected to second valve chamber (D), and the outlet end passes through check-valve port with first valve chamber (C)
(B) it is connected to, first valve chamber (C) is connected to second valve chamber (D) by throttle orifice (A)；
Main valve plug (6), the main valve plug (6) include main valve head (61) and main valve stem (62), and the main valve stem (62) is arranged in institute
It states in driving hole (5) and is slidably matched with the driving hole (5), the main valve head (61) is set in second valve chamber (D)
And be drivingly connected by the main valve stem (62) and the power head (1), the main valve head (61) is matched with the throttle orifice (A)
It closes to control the aperture of the throttle orifice (A)；
Nonreturn valve core (3), the nonreturn valve core (3) include unidirectional valve head (31) and unidirectional valve rod (32), the nonreturn valve core (3)
It is set in first valve chamber (C) and the nonreturn valve core (3) is located at the radial outside of the main valve stem (62), it is described unidirectional
Valve head (31) coordinates with the check-valve port (B) to control the opening and closing of the check-valve port (B), wherein the main valve plug (6)
There is common vertical line section between axis and the axis of the nonreturn valve core (3), first valve chamber (C) and the driving hole (5) that
This is communicated.
2. heating power expansion valve according to claim 1, which is characterized in that in axis and the public affairs of the main valve plug (6)
The first plane that vertical line section limits, in the check-valve port (B), the nonreturn valve core (3) passes through described the in the closure state
One plane and positioned at first plane both sides.
3. heating power expansion valve according to claim 1, which is characterized in that the axis of the driving hole (5) and the valve body
(7) axis of axis coaxle, the axis and the nonreturn valve core (3) of the main valve plug (6) is mutually perpendicular to.
4. heating power expansion valve according to claim 1, which is characterized in that first valve chamber (C) is towards the input end
Side there is open to which the input end is connected to first valve chamber (C), the check-valve port (B) and the opening phase
To setting, the nonreturn valve core (3) is set between the open and described check-valve port (B).
5. heating power expansion valve according to claim 1, which is characterized in that
The axis coaxle of the axis and the input end of the nonreturn valve core (3)；Alternatively,
The axis of the nonreturn valve core (3) is parallel with the axis of the input end；Alternatively,
The axis of the nonreturn valve core (3) has angle with the axis of the input end.
6. heating power expansion valve according to claim 1, which is characterized in that the heating power expansion valve further includes that nonreturn valve core is led
To set (4), the nonreturn valve core guide sleeve (4) is fixed in first valve chamber (C), nonreturn valve core guide sleeve (4) packet
The sleeve (41) with pilot hole is included, the unidirectional valve rod (32) is set in the pilot hole and matches with pilot hole sliding
It closes, the wall of the inside of the nonreturn valve core guide sleeve (4) and/or the nonreturn valve core guide sleeve (4) and first valve chamber (C)
Fluid channel is provided between face.
7. heating power expansion valve according to claim 6, which is characterized in that the nonreturn valve core guide sleeve (4) further includes setting
It sets in the periphery of the sleeve (41), along the axially extending of the nonreturn valve core guide sleeve (4) and be intervally installed multiple
Raised line (42), the fluid channel include the axial pass trough formed between the multiple raised line (42).
8. heating power expansion valve according to any one of claim 1 to 7, which is characterized in that
The axis of the input end of the valve body (7) has the first distance with the axis of the valve body (7)；And/or
The axis of the outlet end of the valve body (7) has second distance with the axis of the valve body (7).
9. heating power expansion valve according to claim 7, which is characterized in that the axis of the input end of the valve body (7) and institute
There is the axis for stating valve body (7) the first distance, the axis of the axis and the valve body (7) of the outlet end of the valve body (7) to have
Second distance, wherein first distance is equal with the second distance, and the axis of the input end of the valve body (7) and institute
State the outlet end of valve body (7) axis be located at the valve body (7) axis the same side.
10. a kind of heat pump system, the heat pump system includes heating power expansion valve, which is characterized in that the heating power expansion valve is root
According to the heating power expansion valve described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410472779.7A CN105485979B (en) | 2014-09-16 | 2014-09-16 | Heating power expansion valve and heat pump system with the heating power expansion valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410472779.7A CN105485979B (en) | 2014-09-16 | 2014-09-16 | Heating power expansion valve and heat pump system with the heating power expansion valve |
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| Publication Number | Publication Date |
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| CN105485979A CN105485979A (en) | 2016-04-13 |
| CN105485979B true CN105485979B (en) | 2018-10-23 |
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| CN201410472779.7A Active CN105485979B (en) | 2014-09-16 | 2014-09-16 | Heating power expansion valve and heat pump system with the heating power expansion valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018090916A1 (en) * | 2016-11-16 | 2018-05-24 | 艾默生环境优化技术(苏州)有限公司 | Bidirectional thermostatic expansion valve and system including same |
| CN113719646A (en) * | 2020-05-12 | 2021-11-30 | 盾安环境技术有限公司 | Flow control device and air conditioning system with same |
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| JP2012225561A (en) * | 2011-04-19 | 2012-11-15 | Tgk Co Ltd | Expansion valve |
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| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| CN103423926A (en) * | 2012-05-16 | 2013-12-04 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN103542645A (en) * | 2012-07-12 | 2014-01-29 | 浙江三花股份有限公司 | Thermostatic expansion valve with one-way control function |
| CN103791664A (en) * | 2012-10-31 | 2014-05-14 | 浙江三花股份有限公司 | Thermal expansion valve with unidirectional control function |
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2014
- 2014-09-16 CN CN201410472779.7A patent/CN105485979B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2931997Y (en) * | 2006-06-21 | 2007-08-08 | 上海恒温控制器厂有限公司 | Thermal expansion valve having one-way valve function |
| JP2012225561A (en) * | 2011-04-19 | 2012-11-15 | Tgk Co Ltd | Expansion valve |
| CN103322735A (en) * | 2012-03-19 | 2013-09-25 | 杭州三花研究院有限公司 | Thermostatic expansion valve with bypass flow passage |
| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| CN103423926A (en) * | 2012-05-16 | 2013-12-04 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN103542645A (en) * | 2012-07-12 | 2014-01-29 | 浙江三花股份有限公司 | Thermostatic expansion valve with one-way control function |
| CN103791664A (en) * | 2012-10-31 | 2014-05-14 | 浙江三花股份有限公司 | Thermal expansion valve with unidirectional control function |
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| CN105485979A (en) | 2016-04-13 |
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Effective date of registration: 20170215 Address after: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Applicant after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Applicant before: ZHEJIANG SANHUA Co.,Ltd. |
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Effective date of registration: 20220816 Address after: 312500 Daming new area, economic development zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |