CN102878734A - Expansion valve - Google Patents
Expansion valve Download PDFInfo
- Publication number
- CN102878734A CN102878734A CN2012104192181A CN201210419218A CN102878734A CN 102878734 A CN102878734 A CN 102878734A CN 2012104192181 A CN2012104192181 A CN 2012104192181A CN 201210419218 A CN201210419218 A CN 201210419218A CN 102878734 A CN102878734 A CN 102878734A
- Authority
- CN
- China
- Prior art keywords
- spool
- expansion valve
- valve
- shell
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013016 damping Methods 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
Images
Classifications
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/325—Expansion valves having two or more valve members
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/063—Feed forward expansion valves
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides an expansion valve, belongs to the technical field of air conditioners, and solves the problem that the service life of the valve is shortened in the existing valve core of the expansion valve due to the frequent shocking of the force of a spring. The expansion valve comprises a shell provided with an inlet end and an outlet end, wherein the shell is internally provided with a valve body provided with an inner cavity which is of a straight tube shape, and the side wall of the valve body is provided with an inlet and an outlet which are communicated with the inner cavity and the shell; a distance sleeve used for obstructing the inlet and the outlet is arranged between the shell and the valve body, and the inner cavity is internally provided with a valve core I and a valve core II which can slide along the inner cavity and are matched with each other; a check ring is fixedly arranged in the middle of the inner cavity between the valve core I and the valve core II, and the two ends of the inner cavity are respectively provided with a spring assembly which can cause the valve core I and the valve core II to be provided with a moving trend to the check ring; and a damping structure is arranged between the valve core I and the valve core II and has a damping effect. Due to the existence of the damping structure, the valve core I approaches to the valve core II with a buffering process, therefore, the impulsion between the valve cores is reduced, and the service life of the expansion valve is prolonged.
Description
Technical field
The invention belongs to air-conditioning technical field, relate to a kind of refrigerating of convertible frequency air conditioner machine automatization expansion valve.
Background technology
Expansion valve is a vitals in the refrigeration system, generally is installed between condenser and the evaporimeter.Expansion valve can make the gas through evaporator evaporation liquefy to the liquid refrigerant of high temperature high pressure by compressor boost, and become the vaporific liquid refrigerant of low-temp low-pressure by its restriction throttling, then cold-producing medium absorbing heat in evaporimeter reaches refrigeration.The degree of superheat of expansion valve by the evaporimeter end changes comes the by-pass valve control flow, prevents under-utilized because of the too small evaporator area of flow and the not enough cold-producing medium gasification of the too much evaporator area of flow not exclusively sucks compressor and produces the liquid state impact.The idle call expansion valve is divided into mechanical swelling valve and electric expansion valve, existing convertible frequency air-conditioner mainly utilizes electric expansion valve by regulating latus rectum control pressure reduction, reach by designing requirement control cold-producing medium gentleization that liquefy, some air-conditioning also useful mechanical swelling valve replaces electronic valve.
Electronic valve is that guaranteeing has constant pressure differential before and after the valve, gives full play to the effect of condenser and evaporimeter by data signal drive motors control electronic valve latus rectum size.Owing to the adjustable timely regulating electric machine rotating speed of compressor electric motor rotating speed frequency conversion, compressor electric motor rotating speed and electric expansion valve motor corner can change synchronously so simultaneously, guarantee that the pressure reduction before and after the electronic valve is constant, so conditioner efficiency is very high.
But because the electronic valve price comparison is expensive, so also there is capillary to replace electronic expansion, then replace common compressor with frequency-changeable compressor, the pressure differential off-design requires just to change the frequency-changeable compressor rotating speed before and after capillary like this, and capillary front and back pressure differential is met design requirement.
A kind of bidirectional flow heat expansion valve [patent No.: 200510048901.9 such as the Chinese patent announcement, notification number: C N1804440], comprise valve body and power head part, offer first interface and the second interface on the valve body, offer the valve port that is communicated with first interface and the second interface in the valve body, downside at valve port is provided with the valve hole part that is obtained the relative support of transmission bar of power by regulating spring and driven force head member, it is characterized in that offering the throttle orifice that is communicated with first interface and the second interface on the described valve hole part, be built-in with the movable part that this throttle orifice is remained on unimpeded or closed state at this throttle orifice.Throttle orifice wherein cooperates the one-way throttle structure that consists of heating power expansion valve inside with movable part, be similar to an one-way throttle valve, the existence of this structure so that heating power expansion valve can two-way circulate, when being applied on the air-conditioning system, the convenient installation, reduce the potential leakage point that brings because of weld seam quantity more, and reduced the manufacturing cost of air-conditioning system.Although but this expansion valve that two-way circulates can realize two-way circulating, be not two-way circulating truly.Because this valve only when forward circulates, changes the bore of realizing valve by temperature-sensitive bag temperature sensor and changes.And can only be by the circulation of the throttle orifice on the valve core during reverse circulated, the bore of valve can not change, and unnecessary resistance when having increased the cold-producing medium circulation increases the energy consumption of air conditioner.And throttle orifice is by the movable part shutoff in the time of oppositely, and spool must be open and could circulate, and causes like this spool frequent impact under acting force of the spring, the service life of having reduced valve.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, having proposed a kind of is latus rectum by control compressor output flow instant control valve, and can guarantee the expansion valve of the pressure differential before and after the valve.
Purpose of the present invention can realize by following technical proposal: a kind of expansion valve, it is characterized in that, this expansion valve comprises the shell with entrance point and port of export, be fixed with the valve body that is straight-tube shape with inner chamber in the described shell, offer import and the outlet of communication with cavity and shell on the described body wall, be provided with the spacer that import and outlet are cut off between described shell and the valve body, be provided with spool one and spool two that can slide along inner chamber and mutually pairing in the described inner chamber, described inner chamber middle part is fixed with back-up ring between spool one and spool two, described inner chamber two ends are respectively equipped with spool one and spool two are had to the spring assembly of back-up ring mobile trend, are provided with the damping structure that can have cushioning effect to spool one and spool two between described spool one and the spool two.
Forward: when cold-producing medium enters in the shell from entrance point, because the existence of spacer can only enter body cavity from import, spring assembly is subjected to the thrust of cold-producing medium and compresses to shorten, promote spool two away from back-up ring, discharge from the outlet of valve body, the port of export from shell flows out at last.Oppositely: when cold-producing medium enters in the shell from the port of export, because the existence of spacer can only enter body cavity from outlet, spring assembly is subjected to the thrust of cold-producing medium and compresses to shorten, promote spool one away from back-up ring, discharge from the import of valve body, the entrance point from shell flows out at last.This expansion valve has the male and female valve core structure of pairing, and both spool one and spool two changed one of them spool action of control by the pressure piping pressure differential; Because the existence of damping structure, so spool one has a steady buffering course during near spool two, reduced the impact between the spool, reduced spool one and spool two against the time wearing and tearing, the service life of improving expansion valve.
In above-mentioned expansion valve, described back-up ring comprises pilot hole, annular cavity, make pod apertures that annular cavity is connected with import and with can with the position-arresting groove of valve body phase inlay card.Pilot hole is used for matching with spool one, and spool one can be entered in the back-up ring, and position-arresting groove can make back-up ring be securely fixed in the inner chamber.
In above-mentioned expansion valve, described damping structure comprises on front cylinder, prosthomere flow cone, rear cylinder, deutomerite flow cone, front guide post and the described spool two that the head of spool one has successively having successively the deutomerite flow cone hole that is complementary with spool one head, rear cylindrical hole, transmission groove, prosthomere flow cone hole and front cylindrical hole, also is provided with the flow-guiding mouth that front cylindrical hole and outlet are connected on the described spool two.When the rear cylinder of spool one entered the front cylindrical hole of spool two, the inner chamber that forms the relative closure one-way conduction between spool two and spool one was front damping cavity.The frong guide column of spool one and the endoporus of back-up ring match, because fit clearance is smaller, the inner chamber that forms relative closure between spool one and back-up ring is middle damping cavity.So that spool travels forward reasonable buffering is arranged during shut off valve, reduce the impact of spool, improve the life-span of valve.
As another kind of scheme, in above-mentioned expansion valve, described spool two offers the through hole of communicating valve external body and transmission groove.When cold-producing medium hour, spool one and spool two are motionless, cold-producing medium enters in the transmission groove from through hole, then flows out through the outlet of back-up ring, valve body.Can not move by low discharge cold-producing medium spool one and spool two, reduce the wearing and tearing of each spool, improve the life-span of spring assembly.
In above-mentioned expansion valve, stud with capillary in the described through hole.Can produce predetermined Pressure Drop in refrigeration system, capillary relies on its flow resistance to produce along its length Pressure Drop, controls the flow and the pressure reduction of keeping condenser and evaporimeter of cold-producing medium, can guarantee that different refrigeration arrange minimum continuous cooling.
As another kind of scheme, in above-mentioned expansion valve, offer the guiding gutter that can be communicated with transmission groove and front cylindrical hole on the described spool one.At flow hour, cold-producing medium can directly enter in the front cylindrical hole from the transmission groove, and has avoided the mutual motion between two spools, has reduced the wearing and tearing that valve core movement produces.
As another kind of scheme, in above-mentioned expansion valve, offer the through hole that is communicated with transmission groove and flow-guiding mouth on the described spool two.At flow hour, cold-producing medium can directly enter in the flow-guiding mouth from the transmission groove.
As another kind of scheme, in above-mentioned expansion valve, offer the through hole that is communicated with deutomerite flow cone hole and front cylindrical hole on the described spool one.At flow hour, cold-producing medium can directly enter in the front cylindrical hole from deutomerite flow cone hole.
As another kind of scheme, in above-mentioned expansion valve, offer the through hole that axially runs through spool one on the described spool one.The cold-producing medium of low discharge is discharged valve body by the spring base aperture after can be directly entering body cavity from the passage of spool.
In above-mentioned expansion valve, described spring assembly comprises spring base and spring, described spring one end is resisted against on spool one or the spool two, the other end is resisted against on the spring base, the end that described spring base is fixed on valve body two ends and spring base offers the aperture that is connected with described shell, the afterbody of described spool one and spool two all has cylinder and the damping annular groove very little with the valve body fit clearance, and the damping ring of an opening is housed on the described damping annular groove.Damping cavity after forming between spring base, valve body, spool one or spool two and the damping ring, and as expansion valve direction control chamber.
In above-mentioned expansion valve, has the gag lever post that restraining spring swings on the described spring base.After increasing gag lever post, the axial wobble amplitude of spring is restricted, guarantees that spring can not work overloadingly, and improves spring life.
In above-mentioned expansion valve, described shell entrance point and port of export place are provided with net-filter assembly, and described net-filter assembly comprises screen holder and the filter screen that is fixed on the shell.Net-filter assembly is used for filtering the foreign material that cold-producing medium is mingled with, and prevents from stopping up expansion valve component.
Compared with prior art, the following advantage of this expansion valve:
1. simple in structure, control cold variations in line pressure by reversal valve and reach control expansion valve direction.
2. make the pressure differential of inner chamber and outlet and import keep balance by damping structure, guarantee the required pressure of refrigerant compression liquefaction.Simultaneously refrigerant flow hour, spool can be failure to actuate, and reduces the spring frequent movement, the service life of having improved expansion valve component.
3. damping cavity before forming between spool one and spool two cushions so that spool one has preferably when contacting with spool two, reduces their impact, the life-span of raising expansion valve.
4. damping cavity between back-up ring and spool one, forming, damping cavity after forming between spool one or spool two and valve body has preferably cushioning effect when spool one or spool two are lifted off a seat, and prevents that spring wink movable property from giving birth to vibration, reduce the noise of spring, improve the life-span of expansion valve.
5. the head of spool one and spool two suitable cooperating can change along with refrigerant flow, and the throttle chink size changes.So can reduce the flow of refrigerant resistance, the Energy Efficiency Ratio that improves whole air-conditioner is had significant role.
Description of drawings
Fig. 1 is the structural representation of this expansion valve of embodiment one.
Fig. 2 is the structural representation of the spool two of embodiment one.
Fig. 3 is the structural representation of the spool one of embodiment one.
Fig. 4 is the schematic diagram of the back-up ring structure of embodiment one.
Fig. 5 is the schematic diagram of the spring seat structure of embodiment one.
Fig. 6 is the schematic diagram of the low discharge water conservancy diversion track configuration of embodiment two.
Fig. 7 is the schematic diagram of the low discharge water conservancy diversion track configuration of embodiment three.
Fig. 8 is the schematic diagram of the low discharge water conservancy diversion track configuration of embodiment four.
Fig. 9 is the schematic diagram of the low discharge water conservancy diversion track configuration of embodiment five.
Figure 10 is the schematic diagram of the low discharge water conservancy diversion track configuration of embodiment six.
1, valve body; 11, import; 12, outlet; 2, spool one; 21, front cylinder; 22, prosthomere flow cone; 23, rear cylinder; 24, deutomerite flow cone; 25, front guide post; 26, damping annular groove; 27, guiding gutter; 3, spool two; 31, deutomerite flow cone hole; 32, rear cylindrical hole; 33, transmission groove; 34, through hole; 35, prosthomere flow cone hole; 36, front cylindrical hole; 37, flow-guiding mouth; 4, spring; 5, spring base; 51, gag lever post; 52, aperture; 6, damping ring; 7, back-up ring; 71, pod apertures; 72, position-arresting groove; 73, pilot hole; 74, annular cavity; 8, spacer; 9, net-filter assembly; 10, shell; 101, entrance point; 102, the port of export.
The specific embodiment
Below be specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Embodiment one
As shown in Figure 1, this expansion valve comprises the shell 10 with entrance point 101 and port of export 102, be fixed with the valve body that is straight-tube shape 1 with inner chamber in the shell 10, offer import 11 and the outlet 12 of communication with cavity and shell 10 on valve body 1 sidewall, being provided with spacer 8 between shell 10 and the valve body 1 cuts off import 11 and outlet 12, being provided with in the inner chamber can be along spool 1 and the spool 23 of inner chamber slip, the inner chamber middle part is fixed with back-up ring 7 between spool 1 and spool 23, the inner chamber two ends are respectively equipped with spool 1 and spool 23 are had to the spring assembly of back-up ring 7 mobile trends, are provided with the damping structure that can have cushioning effect to spool 1 and spool 23 between spool 1 and the spool 23.
Specifically, such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, back-up ring 7 comprises pilot hole 73, annular cavity 74, make pod apertures 71 that annular cavity 74 is connected with import 11 and with the position-arresting groove 72 of valve body 1 phase inlay card.Damping structure comprises on front cylinder 21, prosthomere flow cone 22, rear cylinder 23, deutomerite flow cone 24, front guide post 25 and the spool 23 that the head of spool 1 has successively having successively deutomerite flow cone hole 31, rear cylindrical hole 32, transmission groove 33, prosthomere flow cone hole 35 and the front cylindrical hole 36 that is complementary with spool one 2 heads, and spool 23 is provided with and makes front cylindrical hole 36 and outlet 12 flow-guiding mouths that are connected 37.
Spring assembly comprises spring base 5 and spring 4, and spring 4 one ends are resisted against on spool 1 or the spool 23, and the other end is resisted against on the spring base 5.Spring base 5 is fixed on valve body 1 two ends and offers an aperture 52 and is connected with described shell 10, has the gag lever post 51 that restraining spring 4 swings on the spring base 5.The afterbody of spool 1 and spool 23 all has cylinder and the damping annular groove 26 very little with valve body 1 fit clearance, and damping annular groove 26 is equipped with the damping ring 6 of an opening.Shell 10 entrance points 101 and the port of export 102 places are provided with net-filter assembly 9, and net-filter assembly 9 comprises screen holder and the filter screen that is fixed on the shell 10.
Cold-producing medium is entered by shell 10, and behind the screen component 9, minute control road and guiding path two-way enter this valve after filtration.
Enter such as the port of export 102 of cold-producing medium from a side of spool 23, then:
The control road: cold-producing medium enters from the port of export 102 of shell 10, behind the net-filter assembly 9 through the port of export 102 places, acts on spool 23 through behind the aperture 52 of spring base 5 again, because this valve outlet port 12 pressure are greater than import 11, so promote spool 23.Cold-producing medium in the inner chamber that this moment, spool 1, valve body 1 and spring base 5 surrounded is discharged behind the valve bodies 1 and the circulation flow path merging by the aperture 52 of spring base 5.After spool 23 was near back-up ring 7, spool 23 stopped action and off-load.
Guiding path: because the import 11 of valve body 1 and outlet 12 are separated by spacer 8, so cold-producing medium can only enter the flow-guiding mouth 37 that the outlet 12 of valve body 1 enters into spool 23, process spool 1 and the gap of spool 23, the annular cavity 74 of back-up ring 7, discharge valve body 1 by the pod apertures 71 of back-up ring 7 and the import 11 of valve body 1, pass through again the gap of valve body 1 and shell 10, after merging with the control road herein, behind the net-filter assembly 9 that is formed by screen holder and filter screen by entrance point 101 places, discharge these valves by the entrance point 101 of shell 10.
Enter such as the entrance point 101 of cold-producing medium from a side of spool 1, then:
The control road: cold-producing medium acts on spool 1 after entering the aperture 52 of spring base 5, because this valve import 11 pressure are greater than outlet 12, so promote spool 1 near back-up rings 7.Cold-producing medium in the inner chamber that this moment, spool 23, valve body 1 and spring base 5 surrounded is discharged behind the valve bodies 1 and the circulation flow path merging by the aperture 52 of spring base 5.After spool 1 was near back-up ring 7, spool 1 stopped action and off-load.
Guiding path: because valve body 1 import 11 and outlet 12 are separated by spacer 8, so cold-producing medium can only enter the import 11 of valve body 1 and enter, after the pod apertures 71 through back-up ring 7 places, enter into the annular cavity 74 of back-up ring 7, pass through again the gap of spool 1 and spool 23, discharge valve body 1 by the flow-guiding mouth 37 of spool 23 and the outlet 12 of valve body 1, pass through again the gap of valve body 1 and shell 10, after merging with the control road herein, behind the net-filter assembly 9 that is formed by screen holder and filter screen by the port of export 102 places, discharge these valves by the port of export 102 of shell 10.
Owing to design one at the inner chamber of relative closure between spool 1 and the spool 23 and the inner chamber of an omnidistance relative closure between back-up ring 7 and spool 1 at the spool mobile route, also there is simultaneously the inner chamber of the relative closure between valve body 1, spring base 5 and spool 1 or spool 23, so produce a plurality of dampings when spool 1 or spool 23 are moved.Because the existence of a plurality of dampings so a steady buffering course is arranged when spool 1 or spool 23 move, has reduced the impact of two spools, reduced a cone shape head and spool 23 on the spool against the time wearing and tearing, service life of raising expansion valve.
Embodiment two
The structure of embodiment two and principle and embodiment one basic simlarity as shown in Figure 6, are to have installed additional low discharge water conservancy diversion track configuration with the difference of embodiment one.Low discharge water conservancy diversion track configuration is to offer the through hole 34 that is communicated with valve body 1 outside and transmission groove 33 on the spool 23, studs with capillary in the through hole 34.Can change the flow of through hole 34 by installing capillary additional.
Embodiment three
The structure of embodiment three and principle and embodiment two basic simlarities as shown in Figure 7, are low discharge water conservancy diversion track configuration with the difference of embodiment two.Low discharge water conservancy diversion track configuration is to offer the guiding gutter 27 that can be communicated with transmission groove 33 and front cylindrical hole 36 on the spool 1.
Embodiment four
The structure of embodiment four and principle and embodiment two basic simlarities as shown in Figure 8, are low discharge water conservancy diversion track configuration with the difference of embodiment two.Low discharge water conservancy diversion track configuration is to offer the through hole 34 that is communicated with transmission groove 33 and flow-guiding mouth 37 on the spool 23.
Embodiment five
The structure of embodiment five and principle and embodiment two basic simlarities as shown in Figure 9, are low discharge water conservancy diversion track configuration with the difference of embodiment two.Low discharge water conservancy diversion track configuration is to offer the through hole 34 that is communicated with deutomerite flow cone hole 31 and front cylindrical hole 36 on the spool 1.
Embodiment six
The structure of embodiment six and principle and embodiment two basic simlarities as shown in figure 10, are low discharge water conservancy diversion track configuration with the difference of embodiment two.Low discharge water conservancy diversion track configuration is to offer the through hole 34 that axially runs through spool 1 on the spool 1.The low discharge cold-producing medium is discharged valve body 1 without valve body 1 outlet 12, but directly discharges valve body 1 by the aperture 52 of spring base 5.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. expansion valve, it is characterized in that, this expansion valve comprises the shell (10) of have entrance point (101) and the port of export (102), be fixed with the valve body that is straight-tube shape (1) with inner chamber in the described shell (10), offer import (11) and the outlet (12) of communication with cavity and shell (10) on described valve body (1) sidewall, be provided with the spacer (8) that import (11) and outlet (12) are cut off between described shell (10) and the valve body (1), be provided with spool one (2) and spool two (3) that can slide along inner chamber and mutually pairing in the described inner chamber, described inner chamber middle part is fixed with back-up ring (7) between spool one (2) and spool two (3), described inner chamber two ends are respectively equipped with spool one (2) and spool two (3) are had to the spring assembly of back-up ring (7) mobile trend, are provided with the damping structure that can have cushioning effect to spool one (2) and spool two (3) between described spool one (2) and the spool two (3).
2. expansion valve according to claim 1, it is characterized in that, described back-up ring (7) comprises pilot hole (73), annular cavity (74), make pod apertures (71) that annular cavity (74) is connected with import (11) and with can with the position-arresting groove (72) of valve body (1) phase inlay card.
3. expansion valve according to claim 2, it is characterized in that, described damping structure comprises the front cylinder (21) that the head of spool one (2) has successively, prosthomere flow cone (22), rear cylinder (23), deutomerite flow cone (24), has successively the deutomerite flow cone hole (31) that is complementary with spool one (2) head on front guide post (25) and the described spool two (3), rear cylindrical hole (31), transmission groove (33), prosthomere flow cone hole (35) and front cylindrical hole (36) also are provided with the flow-guiding mouth (37) that front cylindrical hole (36) is connected with outlet (12) on the described spool two (3).
4. expansion valve according to claim 3 is characterized in that, described spool two (3) offers the through hole (34) that is communicated with valve body (1) outside and transmission groove (33).
5. expansion valve according to claim 3 is characterized in that, offers the guiding gutter (27) that can be communicated with transmission groove (33) and front cylindrical hole (36) on the described spool one (2).
6. expansion valve according to claim 3 is characterized in that, offers the through hole (34) that is communicated with transmission groove (33) and flow-guiding mouth (37) on the described spool two (3).
7. expansion valve according to claim 3 is characterized in that, offers the through hole (34) that is communicated with deutomerite flow cone hole (31) and front cylindrical hole (36) on the described spool one (2).
8. expansion valve according to claim 3 is characterized in that, offers the through hole (34) that axially runs through spool one (2) on the described spool one (2).
9. according to claim 1 and 2 or 3 or 4 or 5 or 6 or 7 or 8 described expansion valves, it is characterized in that, described spring assembly comprises spring base (5) and spring (4), described spring (4) one ends are resisted against on spool one (2) or the spool two (3), the other end is resisted against on the spring base (5), the end that described spring base (5) is fixed on valve body (1) two ends and spring base (5) offers the aperture (52) that is connected with described shell (10), the afterbody of described spool one (2) and spool two (3) all has cylinder and the damping annular groove (26) very little with valve body (1) fit clearance, and the damping ring (6) of an opening is housed on the described damping annular groove (26).
10. expansion valve according to claim 9, it is characterized in that, described shell (10) entrance point (101) and the port of export (102) locate to be provided with net-filter assembly (9), and described net-filter assembly (9) comprises screen holder and the filter screen that is fixed on the shell (10).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419218.1A CN102878734B (en) | 2012-10-26 | 2012-10-26 | Expansion valve |
| US14/437,240 US20150276286A1 (en) | 2012-10-26 | 2013-09-29 | Expansion Valve |
| PCT/CN2013/084559 WO2014063558A1 (en) | 2012-10-26 | 2013-09-29 | Expansion valve |
| JP2015534902A JP6134386B2 (en) | 2012-10-26 | 2013-09-29 | Bidirectional expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419218.1A CN102878734B (en) | 2012-10-26 | 2012-10-26 | Expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878734A true CN102878734A (en) | 2013-01-16 |
| CN102878734B CN102878734B (en) | 2014-10-15 |
Family
ID=47480164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210419218.1A Active CN102878734B (en) | 2012-10-26 | 2012-10-26 | Expansion valve |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20150276286A1 (en) |
| JP (1) | JP6134386B2 (en) |
| CN (1) | CN102878734B (en) |
| WO (1) | WO2014063558A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014063558A1 (en) * | 2012-10-26 | 2014-05-01 | 温岭市恒发空调部件有限公司 | Expansion valve |
| CN107906805A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| US10240830B2 (en) | 2013-07-04 | 2019-03-26 | Danfoss A/S | Expansion valve comprising a stop element |
| US10274236B2 (en) | 2013-07-04 | 2019-04-30 | Danfoss A/S | Expansion valve with a two-step variable orifice area |
| US10281181B2 (en) | 2013-07-04 | 2019-05-07 | Danfoss A/S | Expansion valve with a variable orifice area |
| CN110185666A (en) * | 2019-06-10 | 2019-08-30 | 徐州阿马凯液压技术有限公司 | A kind of novel hydraulic valve reversing buffering mechanism |
| CN113404867A (en) * | 2020-03-17 | 2021-09-17 | 盾安环境技术有限公司 | Expansion valve |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203881014U (en) * | 2014-06-10 | 2014-10-15 | 温岭市恒发空调部件有限公司 | Automatic two-way expansion valve |
| US10330362B1 (en) * | 2017-12-20 | 2019-06-25 | Rheem Manufacturing Company | Compressor protection against liquid slug |
| CN109114853A (en) * | 2018-09-26 | 2019-01-01 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN109374385B (en) * | 2018-10-23 | 2021-04-23 | 江苏艾洛特医药研究院有限公司 | RNA cell molecule inspection device |
| CN111841378B (en) * | 2020-08-04 | 2022-12-30 | 成都格拉斯曼科技有限公司 | Liquid medicine agitating unit of glass production water line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115775A (en) * | 2000-10-05 | 2002-04-19 | Tgk Co Ltd | Expansion valve |
| JP2008215797A (en) * | 2007-02-07 | 2008-09-18 | Tgk Co Ltd | Expansion valve |
| CN101520100A (en) * | 2008-02-29 | 2009-09-02 | 浙江三花股份有限公司 | One-way control valve |
| CN102116547A (en) * | 2011-04-07 | 2011-07-06 | 宁波奥柯汽车空调有限公司 | Short tube throttle valve for air conditioner |
| CN202915612U (en) * | 2012-10-26 | 2013-05-01 | 温岭市恒发空调部件有限公司 | Expansion valve |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58104469U (en) * | 1982-01-11 | 1983-07-15 | 日立建機株式会社 | relief valve |
| US5134860A (en) * | 1991-05-20 | 1992-08-04 | Carrier Corporation | Variable area refrigerant expansion device having a flexible orifice for heating mode of a heat pump |
| US5901750A (en) * | 1996-02-06 | 1999-05-11 | Nartron Corporation | Variable flow orifice valve assembly |
| US5715704A (en) * | 1996-07-08 | 1998-02-10 | Ranco Incorporated Of Delaware | Refrigeration system flow control expansion valve |
| DE60016586T2 (en) * | 1999-05-20 | 2005-12-22 | Carrier Corp., Farmington | DISTRIBUTION MACHINE AND METHOD FOR CLEANING ON SITE OF DISTRIBUTION MACHINE |
| DE10305947A1 (en) * | 2003-02-12 | 2004-08-26 | Robert Bosch Gmbh | An expansion unit for a cooling system, where the expansion unit is an electromagnetic slide valve useful especially for regulating the high pressure of an automobile air conditioning system |
| JP2004257676A (en) * | 2003-02-27 | 2004-09-16 | Tgk Co Ltd | Reversible inflating device |
| JP2005265230A (en) * | 2004-03-17 | 2005-09-29 | Tgk Co Ltd | Bidirectional expansion device |
| JP4981663B2 (en) * | 2005-04-27 | 2012-07-25 | イーグル工業株式会社 | Switching valve |
| US7832232B2 (en) * | 2006-06-30 | 2010-11-16 | Parker-Hannifin Corporation | Combination restrictor cartridge |
| CN102686921B (en) * | 2009-09-30 | 2014-03-26 | 大金工业株式会社 | Rotary valve |
| CN102878734B (en) * | 2012-10-26 | 2014-10-15 | 温岭市恒发空调部件有限公司 | Expansion valve |
-
2012
- 2012-10-26 CN CN201210419218.1A patent/CN102878734B/en active Active
-
2013
- 2013-09-29 US US14/437,240 patent/US20150276286A1/en not_active Abandoned
- 2013-09-29 JP JP2015534902A patent/JP6134386B2/en not_active Expired - Fee Related
- 2013-09-29 WO PCT/CN2013/084559 patent/WO2014063558A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115775A (en) * | 2000-10-05 | 2002-04-19 | Tgk Co Ltd | Expansion valve |
| JP2008215797A (en) * | 2007-02-07 | 2008-09-18 | Tgk Co Ltd | Expansion valve |
| CN101520100A (en) * | 2008-02-29 | 2009-09-02 | 浙江三花股份有限公司 | One-way control valve |
| CN102116547A (en) * | 2011-04-07 | 2011-07-06 | 宁波奥柯汽车空调有限公司 | Short tube throttle valve for air conditioner |
| CN202915612U (en) * | 2012-10-26 | 2013-05-01 | 温岭市恒发空调部件有限公司 | Expansion valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014063558A1 (en) * | 2012-10-26 | 2014-05-01 | 温岭市恒发空调部件有限公司 | Expansion valve |
| US10240830B2 (en) | 2013-07-04 | 2019-03-26 | Danfoss A/S | Expansion valve comprising a stop element |
| US10274236B2 (en) | 2013-07-04 | 2019-04-30 | Danfoss A/S | Expansion valve with a two-step variable orifice area |
| US10281181B2 (en) | 2013-07-04 | 2019-05-07 | Danfoss A/S | Expansion valve with a variable orifice area |
| CN107906805A (en) * | 2017-12-18 | 2018-04-13 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN107906805B (en) * | 2017-12-18 | 2023-07-28 | 浙江泽顺制冷科技有限公司 | Expansion valve |
| CN110185666A (en) * | 2019-06-10 | 2019-08-30 | 徐州阿马凯液压技术有限公司 | A kind of novel hydraulic valve reversing buffering mechanism |
| CN113404867A (en) * | 2020-03-17 | 2021-09-17 | 盾安环境技术有限公司 | Expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014063558A1 (en) | 2014-05-01 |
| JP2015530558A (en) | 2015-10-15 |
| CN102878734B (en) | 2014-10-15 |
| US20150276286A1 (en) | 2015-10-01 |
| JP6134386B2 (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102878734B (en) | Expansion valve | |
| CN102878733A (en) | Expansion valve components, one-way expansion valve and two-way circulation expansion valve | |
| CN203216168U (en) | Expansion valve components, one-way expansion valve and two-way circulation expansion valve | |
| CN202926640U (en) | Automatic liquid spraying structure of scroll compressor | |
| CN103216980A (en) | Bi-direction circulation expansion valve | |
| CN109296805A (en) | Motor-driven valve and refrigerating circulation system | |
| CN201548001U (en) | Throttling device for refrigeration system with three parallel-connected compressors | |
| CN203163327U (en) | Air conditioning system | |
| CN203572107U (en) | Supercooling heat exchanger and heat pump system with same | |
| CN100529600C (en) | Across critical carbon dioxide automobile air conditioner system mechanical conditioning type expansion valve | |
| CN103244413B (en) | Rotary compressor | |
| CN202915612U (en) | Expansion valve | |
| CN102818391A (en) | Double circulation refrigerating system with electric valve | |
| CN102032728B (en) | Device for automatically adjusting flux of refrigeration working medium | |
| CN105466088A (en) | Thermostatic expansion valve and heat pump system provided with thermostatic expansion valve | |
| CN206175674U (en) | Flow control valve and heat pump system | |
| CN203274378U (en) | Bidirectional circulation expansion valve | |
| CN204438622U (en) | A kind of machine automatization expansion valve | |
| CN101900463A (en) | Air-conditioner and air-conditioner control method | |
| CN101988585B (en) | Thermal expansion valve | |
| CN106481822A (en) | Flow control valve, heat pump and its control method | |
| CN109405373B (en) | Throttle multi-port expansion valve assembly and vehicle | |
| CN200975495Y (en) | Second throttle bidirectional heat expansion valve with filter structure | |
| CN100547274C (en) | Second throttle bidirectional heat expansion valve | |
| CN206648341U (en) | A kind of microwave moves hot systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221205 Address after: 317523 Second floor, first floor, southeast corner, No. 228, Houcang Road, Zeguo Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Zeshun Refrigeration Technology Co.,Ltd. Address before: No. 228, Houcang Road, Zeguo Town, Wenling City, Taizhou City, Zhejiang Province 317523 Patentee before: WENLING HENGFA AIRCONDITION COMPONENTS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An expansion valve Effective date of registration: 20231213 Granted publication date: 20141015 Pledgee: Wenling branch of the Industrial Commercial Bank of China Ltd. Pledgor: Zhejiang Zeshun Refrigeration Technology Co.,Ltd. Registration number: Y2023980071078 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |