CN104121390B - A kind of four-way valve - Google Patents
A kind of four-way valve Download PDFInfo
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- CN104121390B CN104121390B CN201310157589.1A CN201310157589A CN104121390B CN 104121390 B CN104121390 B CN 104121390B CN 201310157589 A CN201310157589 A CN 201310157589A CN 104121390 B CN104121390 B CN 104121390B
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- pipe
- end cap
- low pressure
- piston
- high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
- F16K11/0856—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/36—Features relating to lubrication
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a kind of four-way valve, for air-conditioning system accessory, solve the problems, such as that piston and valve body dry friction cause seizure of piston, including main valve and pilot valve, the main valve includes valve body and piston, one end of valve body sets the first end cap seal, the other end sets the second end cap seal, the internal chamber wall at the valve body both ends is equipped with the installation step that the axial middle part to valve body from the end of valve body along valve body extends, the step surface of two installation steps is positioned at the both sides in adapter hole, the installation step is equipped with lubricating bushings, the piston matches somebody with somebody the interior wall slip merged along lubricating bushings with the inner wall of lubricating bushings, the inner face of the lubricating bushings is butted on the step surface of installation step, the length of lubricating bushings is more than the shift motion of piston.For changing refrigerant flow direction in air-conditioning system, refrigeration, heating switching are realized.
Description
Technical field
The present invention relates to refrigerant flow direction is changed in air-conditioning system, refrigeration, the four-way valve of heating switching are realized.
Background technology
In the prior art, large capacity four-way valve is commonly used in heat pump type air conditioner, is mainly made of main valve and pilot valve, main valve
Arranged including valve body, the piston being located in valve body and the condenser pipe being arranged on valve body, evaporation tube, high-pressure pipe and low pressure
Tracheae, the both ends of valve body are equipped with the first end cap and the second end cap.Piston is to utilize the pressure between the first end cap and the second end cap
Difference, in valve body interior axle to moving back and forth, is toggled with realizing between high-pressure pipe and condenser pipe, evaporation tube.On great Rong
The operation principle of four-way valve is measured, lot of domestic and international document has had detailed introduction, and which is not described herein again.By to four-way valve work
Make the analysis of principle：1) when four-way valve is in power failure state, due to the effect of gases at high pressure, piston can to low pressure exhaust pipe with
Tilted between evaporation tube, when four-way valve obtains it is electric after piston can be moved to the end face of the first end cap, at this time since piston is subject to high pressure
The thrust of gas, in commutation, the low pressure exhaust pipe in valve body is subject to resistance especially big with evaporation tube angle, if stress at this
Point sufficient, effective cannot lubricate, and will destroy low pressure exhaust pipe and evaporation pipe clamp that valve body is located at the first end cap with piston
Oil film between angle, forms dry friction, last plucking valve body, causes whole four-way valve because seizure of piston is without changing when serious
To；2) when four-way valve be in electricity condition when, force analysis during with reference to above-mentioned power failure state, if in valve body low pressure exhaust pipe with
The stress point of condenser pipe angle sufficient, effective cannot lubricate, and will destroy valve body and be located at the low of the second end cap with piston
Oil film between pressure tracheae and condenser pipe angle, forms dry friction, plucking valve body, eventually results in whole four-way valve because of work
Fork clip is extremely without commutating.Further, since air-conditioning system obtains the reason for pressure differential can also make oil in valve under the washing away of refrigerant
Film is brought away from, and is caused piston to work under oil-free lubrication, is easily pulled valve interior wall.
The content of the invention
The purpose of the invention to be reached just is to provide a kind of four-way valve, and solving piston and valve body dry friction causes piston card
The problem of dead.
In order to achieve the above object, the present invention adopts the following technical scheme that：A kind of four-way valve, including main valve and pilot valve, institute
Stating main valve includes valve body and piston, and the piston is arranged in the inner cavity of valve body and can be moved axially along valve body, and one end of valve body is set
The first end cap seal, the other end the second end cap seal of setting are put, first of the inner cavity and pilot valve between piston and the first end cap connects
Pipe connects, and the inner cavity between piston and the second end cap is connected with the second adapter of pilot valve, and the valve body has adapter hole and passes through
Adapter hole is connected to condenser pipe, evaporation tube, high-pressure pipe and low pressure exhaust pipe, and high-voltage signal pipe and the high-pressure pipe of pilot valve connect
Logical, the low-voltage signal pipe of pilot valve is connected with low pressure exhaust pipe, and the internal chamber wall at the valve body both ends is equipped with from the end of valve body along valve
The installation step that the axial middle part to valve body of body extends, the step surface of two installation steps are described positioned at the both sides in adapter hole
Installation step is equipped with lubricating bushings, and the piston matches somebody with somebody the interior wall slip merged along lubricating bushings, institute with the inner wall of lubricating bushings
The inner face for stating lubricating bushings is butted on the step surface of installation step, and the length of lubricating bushings is more than the shift motion of piston.
Further, the inner wall of the lubricating bushings has the trapped fuel hole for being used for being embedded in solid oil.
Further, the trapped fuel hole is through hole or blind hole.
Further, the piston along its axial direction from close to the second end cap one end to close to the first end cap one end successively
Equipped with high pressure runner I and high pressure runner II, high pressure runner II relatively high pressure runners I is rotated by 90 ° setting, and high pressure runner I can be with profit
The inner wall of sliding bushing surrounds high pressure chest I, and high pressure runner II can surround high pressure chest II with the inner wall of lubricating bushings, in high pressure runner I
The back side be equipped with low pressure runner I, be equipped with low pressure runner II at the back side of high pressure runner II, low pressure runner I can be with lubricating bushings
Inner wall surrounds low pressure chamber I, and low pressure runner II can surround low pressure chamber II with the inner wall of lubricating bushings, and high pressure runner I is close to second end
The side wall of lid and piston close to the distance between end face of the second end cap and high pressure runner II close to the first end cap side wall with
Piston is L1 close to the distance between end face of the first end cap, and when piston props up the first end cap, piston is close to the second end cap
End face and the distance between the step surface of installation step close to the second end cap be S1, S1 >=0.5L1, when piston props up second
During end cap, the distance between the step surface of installation step of piston close to the end face of the first end cap and close to the first end cap is S2,
S2≥0.5L1。
Further, the valve body has eight adapter holes, two adapter Kong Weiyi groups and along valve body axial alignment, four groups
It is circumferentially uniformly distributed along valve body to take over hole, eight adapter holes connect the first condenser pipe, the second condenser pipe, the first evaporation tube, second respectively
Evaporation tube, the first high-pressure pipe, the second high-pressure pipe, the first low pressure exhaust pipe and the second low pressure exhaust pipe, wherein first
Condenser pipe and the second evaporation tube are arranged in same group of adapter hole and the first condenser pipe is provided close in the adapter hole of the second end cap, the
Two condenser pipes and the first evaporation tube are arranged in same group of adapter hole, and the first condenser pipe is opposite with the first evaporation tube, the second evaporation tube
It is opposite with the second condenser pipe, the first high-pressure pipe and the second high-pressure pipe be arranged in same group of adapter hole and the first high pressure into
Tracheae is provided close in the adapter hole of the second end cap, the first low pressure exhaust pipe and the second low pressure exhaust pipe are arranged on same group of adapter hole
In, the first high-pressure pipe is opposite with the first low pressure exhaust pipe, the second high-pressure pipe is opposite with the second low pressure exhaust pipe, described
The high-voltage signal pipe of pilot valve is connected with the first high-pressure pipe and/or the second high-pressure pipe, the low-voltage signal Guan Yu of pilot valve
One low pressure exhaust pipe and/or the connection of the second low pressure exhaust pipe.
Further, the piston along its axial direction from close to the second end cap one end to close to the first end cap one end successively
Equipped with the first high pressure runner, the second high pressure runner and the 3rd high pressure runner, wherein the second high pressure runner is with respect to the first high pressure runner
Setting is rotated by 90 °, the first high pressure runner can surround the first high pressure chest with the inner wall of lubricating bushings, and the second high pressure runner can be with profit
The inner wall of sliding bushing surrounds the second high pressure chest, and the 3rd high pressure runner can surround the 3rd high pressure chest with the inner wall of lubricating bushings, the
The back side of one high pressure runner is equipped with the first low pressure runner, the second low pressure runner is equipped with the back side of the second high pressure runner, the 3rd
The back side of high pressure runner is equipped with the 3rd low pressure runner, and the first low pressure runner can surround the first low pressure chamber with the inner wall of lubricating bushings,
Second low pressure runner can surround the second low pressure chamber with the inner wall of lubricating bushings, and the 3rd low pressure runner can be enclosed with the inner wall of lubricating bushings
Into the 3rd low pressure chamber；
When piston props up the first end cap, the first high pressure chest is connected with the first high-pressure pipe, the first condenser pipe, and first is low
Pressure chamber is connected with the first low pressure exhaust pipe, the first evaporation tube, and the second high pressure chest and the second high-pressure pipe, the second condenser pipe connect
Logical, the second low pressure chamber is connected with the second low pressure exhaust pipe, the second evaporation tube；
When piston props up the second end cap, the second high pressure chest is connected with the first high-pressure pipe, the first evaporation tube, and second is low
Pressure chamber is connected with the first low pressure exhaust pipe, the first condenser pipe, and the 3rd high pressure chest and the second high-pressure pipe, the second evaporation tube connect
Logical, the 3rd low pressure chamber is connected with the second low pressure exhaust pipe, the second condenser pipe.
Further, first high pressure runner close to the second end cap side wall and piston close to the end face of the second end cap it
Between distance and the 3rd high pressure runner close to the first end cap side wall and piston close to the distance between end face of the first end cap
It is L2, when piston props up the first end cap, piston is close to the end face of the second end cap and the installation step close to the second end cap
The distance between step surface is S3, S3 >=0.5L2, when piston props up the second end cap, piston close to the end face of the first end cap with
The distance between step surface of installation step close to the first end cap is S4, S4 >=0.5L2.
Further, the piston has connects the first high pressure chest and by the second high pressure chest and the with the second high pressure chest
The first intercommunicating pore or the first connectivity slot of three high pressure chests connection；Alternatively, the piston has the first low pressure chamber and the second low pressure
The second intercommunicating pore or the second connectivity slot that chamber connects and connects the second low pressure chamber with the 3rd low pressure chamber；Alternatively, the piston
With the first intercommunicating pore that the first high pressure chest is connected with the second high pressure chest and connected the second high pressure chest with the 3rd high pressure chest
Or first connectivity slot, the piston, which has, to be connected the first low pressure chamber with the second low pressure chamber and the second low pressure chamber is low with the 3rd
Press the second intercommunicating pore or the second connectivity slot of chamber connection.
Further, first condenser pipe and the second condenser pipe are connected by the first communicating pipe；Alternatively, described first steams
Hair pipe is connected with the second evaporation tube by the second communicating pipe；Alternatively, first condenser pipe and the second condenser pipe connect by first
Siphunculus connects, and first evaporation tube and the second evaporation tube are connected by the second communicating pipe.
Further, first high-pressure pipe and the second high-pressure pipe are connected by third connecting pipe, and first is low
Pressure tracheae and the second low pressure exhaust pipe are connected by the 4th communicating pipe.
After adopting the above technical scheme, the invention has the advantages that：After setting lubricating bushings, by lubricating bushings alternative valve
Internal cavity wall carries out friction fit with piston, and the piston and valve body dry friction for both having solved four-way valve cause asking for seizure of piston
Topic, and be not required client additionally to increase filling conduit and lubricating oil is filled into four-way valve, while do not change the outside of four-way valve again
Structure, greatly promotes the basic performance and replicability of product；In addition whole body cavity need not be completely covered in lubricating bushings
Wall, as long as ensureing four-way valve in use, the both ends of piston coordinate with lubricating bushings can solve the above problems all the time, phase
For lubricating bushings are completely covered with body cavity wall, material cost is more saved, and it is simpler in structure, and assembling also obtains
To simplification, production cost is also minimized.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of the first embodiment of the invention；
Fig. 2 is the sectional view of valve body in embodiment illustrated in fig. 1；
Fig. 3 is the schematic diagram of the lubricating bushings with trapped fuel hole；
Fig. 4 props up structure diagram during the first end cap for piston in embodiment illustrated in fig. 1；
Fig. 5 is when piston props up the second end cap in embodiment illustrated in fig. 1 and the position relationship schematic diagram of lubricating bushings (is not shown
Go out the second end cap)；
Fig. 6 is that piston props up the first end cap phase to the position relationship schematic diagrams of lubricating bushings (not in embodiment illustrated in fig. 1
First end cap is shown)；
Fig. 7 is the structure diagram of second of embodiment of the invention；
Fig. 8 is the structure diagram of piston in Fig. 7；
Fig. 9 is when piston props up the second end cap in embodiment illustrated in fig. 7 and the position relationship schematic diagram of lubricating bushings (is not shown
Go out the second end cap)；
Figure 10 be when piston props up the first end cap in embodiment illustrated in fig. 7 and the position relationship schematic diagram of lubricating bushings (not
First end cap is shown)；
Figure 11 is the schematic diagram of increase connection slot structure on piston shown in Fig. 8.
Embodiment
Embodiment one：
It is as illustrated in fig. 1 and 2 the first embodiment of the invention, a kind of four-way valve, including main valve 1 and pilot valve 2, main valve includes
Valve body 11 and piston 12, piston are arranged in the inner cavity of valve body and can be moved axially along valve body, and one end of valve body sets the first end cap
13 sealings, the other end set the second end cap 14 to seal, and the first adapter 21 of the inner cavity and pilot valve between piston and the first end cap connects
Logical, the first adapter is fixedly connected on the first end cap, and the inner cavity between piston and the second end cap is connected with the second adapter 22 of pilot valve,
Second adapter is fixedly connected on the second end cap, and valve body has four adapter holes 111, and four adapter holes are evenly distributed with along the circumferential direction of valve body,
Condenser pipe C, evaporation tube E, high-pressure pipe D and low pressure exhaust pipe S, wherein condenser pipe C and evaporation tube E phases are connected to by taking over hole
It is right, that is, refer to condenser pipe C with take over the mouth of pipe that be connected of hole and evaporation tube E with take over the mouth of pipe that hole is connected be located at valve body it is same always
The both ends in footpath, and high-pressure pipe D and low pressure exhaust pipe S-phase pair, similarly refer to the mouth of pipe that high-pressure pipe D is connected with taking over hole
Be located at the both ends of the same diameter of valve body with low pressure exhaust pipe S with the mouth of pipe that be connected of adapter hole, the high-voltage signal pipe 23 of pilot valve and
High-pressure pipe connects, and the low-voltage signal pipe 24 of pilot valve is connected with low pressure exhaust pipe, and the internal chamber wall at valve body both ends is equipped with from valve body
The installation step 112 that extends along the axial middle part to valve body of valve body of end, the step surface 1121 of two installation steps is located at
The both sides in hole are taken over, installation step is equipped with lubricating bushings 3, and piston is matched somebody with somebody with the inner wall of lubricating bushings and merged along lubricating bushings
Wall slip, the inner face of the lubricating bushings are butted on the step surface of installation step, and the length of lubricating bushings is more than the movement of piston
Stroke, this makes it possible to ensure the both ends of piston all the time with lubricating bushings friction fit, from the situation that dry friction may be not present, from
So eliminate the hidden danger of seizure of piston.As shown in figure 3, photosensitiveness self-lubricating material can be selected or using common material and in lubricious liner
The inner wall of set has the trapped fuel hole 31 for being used for being embedded in solid oil, and trapped fuel hole can be through hole or blind hole, and lubricate
The inner wall even distribution of bushing is preferred.
In addition, the one end of piston along its axial direction from close to one end of the second end cap to close to the first end cap is equipped with high pressure successively
Runner I128 and high pressure runner II129, wherein high pressure runner II relatively high pressures runner I are rotated by 90 ° setting, and high pressure runner I can be with
The inner wall of lubricating bushings surrounds high pressure chest I, and high pressure runner II can surround high pressure chest II with the inner wall of lubricating bushings, in high pressure runner
The back side of I is equipped with low pressure runner I, is equipped with low pressure runner II at the back side of high pressure runner II, low pressure runner I can be with lubricating bushings
Inner wall surrounds low pressure chamber I, and low pressure runner II can surround low pressure chamber II with the inner wall of lubricating bushings, as it can be seen in figures 5 and 6, high-pressure spray
Road I close to the second end cap side wall and piston close to the distance between end face of the second end cap and high pressure runner II close to first
The side wall of end cap is L1 close to the distance between end face of the first end cap with piston, when piston props up the first end cap, piston
Close to the end face of the second end cap with close to the distance between step surface of installation step of the second end cap be S1, S1 >=0.5L1, when
When piston props up the second end cap, piston is close to the end face of the first end cap and between the step surface of the installation step of the first end cap
Distance be S2, S2 >=0.5L1.
And the operation principle for being related to the present embodiment is as follows：
During four-way valve power failure state, refrigerant enters body cavity by the high-pressure pipe being connected with exhaust outlet of compressor
Entered at the same time by the high-voltage signal pipe of pilot valve in pilot valve, be then connected by the second adapter with the second end cap and enter piston and
Inner cavity between second end cap, makes the partial lumen form high pressure chest, meanwhile, the low pressure exhaust pipe being connected with compressor inlet
Inner cavity between piston and the first end cap is connected by the low-voltage signal pipe of pilot valve, the inner cavity is formed low pressure chamber.Thus can
Promote piston move from the second end cap to the first end cap direction, until prop up the first end cap, at this time, high pressure chest I on piston and
High-pressure pipe D and condenser pipe C connections, low pressure chamber I on valve body are connected with the low-pressure inlet pipe S on valve body and evaporation tube E, such as
Shown in Fig. 4 and 6, kind of refrigeration cycle is realized；
When four-way valve obtains electricity condition, refrigerant enters body cavity by the high-pressure pipe being connected with exhaust outlet of compressor
Entered at the same time by the high-voltage signal pipe of pilot valve in pilot valve, be then connected by the first adapter with the first end cap and enter piston and
Inner cavity between first end cap, makes the partial lumen form high pressure chest, meanwhile, the low pressure exhaust pipe being connected with compressor inlet
Inner cavity between piston and the second end cap is connected by the low-voltage signal pipe of pilot valve, the inner cavity is formed low pressure chamber.Thus can
Piston is promoted to be moved from the first end cap to the second end cap direction, until propping up the second end cap.At this time, the high pressure chest II on piston with
High-pressure pipe D and evaporation tube E connections, low pressure chamber II on valve body are connected with the low pressure exhaust pipe S on valve body and condenser pipe C,
As described in figures 1 and 5, heating circulation is realized.
Embodiment two：
Improved as shown in FIG. 7 and 8 for second of embodiment of the invention, the present embodiment on the basis of embodiment one,
Valve body 11 has eight adapter holes, and two adapter Kong Weiyi groups are simultaneously circumferentially equal along valve body along valve body axial alignment, four groups of adapter holes
Cloth, eight adapter holes connect the first condenser pipe C1, the second condenser pipe C2, the first evaporation tube E1, the second evaporation tube E2, first respectively
High-pressure pipe D1, the second high-pressure pipe D2, the first low pressure exhaust pipe S1 and the second low pressure exhaust pipe S2, wherein the first condensation
Pipe C1 and the second evaporation tube E2 is arranged in same group of adapter hole and the first condenser pipe C1 is provided close to the adapter hole of the second end cap 14
In, the second condenser pipe C2 and the first evaporation tube E1 be arranged in same group of adapter hole, the first condenser pipe C1 and the first evaporation tube E1 phases
Opposite with the second condenser pipe C2 to, the second evaporation tube E2, the first high-pressure pipe D1 and the second high-pressure pipe D2 is arranged on same
In group adapter hole and the first high-pressure pipe D1 be provided close in the adapter hole of the second end cap 14, the first low pressure exhaust pipe S1 and the
Two low pressure exhaust pipe S1 are arranged in same group of adapter hole, and the first high-pressure pipe D1 is opposite with the first low pressure exhaust pipe S1, second
High-pressure pipe D2 is opposite with the second low pressure exhaust pipe S2, and the high-voltage signal pipe 23 of pilot valve 2 is connected with the first high-pressure pipe D1,
The low-voltage signal pipe 24 of pilot valve is connected with the first low pressure exhaust pipe S1.
Piston 12 is equipped with the successively along its axial direction from close to one end of the second end cap 14 to close to one end of the first end cap 13
One high pressure runner 121, the second high pressure runner 122 and the 3rd high pressure runner 123, wherein the second high pressure runner is with respect to the first high-pressure spray
Road is rotated by 90 ° setting, and the first high pressure runner can surround the first high pressure chest with the inner wall of lubricating bushings, and the second high pressure runner can be with
The inner wall of lubricating bushings surrounds the second high pressure chest, and the 3rd high pressure runner can surround the 3rd high pressure chest with the inner wall of lubricating bushings,
The back side of first high pressure runner is equipped with the first low pressure runner 124, and the second low pressure runner is equipped with the back side of the second high pressure runner
125, the 3rd low pressure runner 126 is equipped with the back side of the 3rd high pressure runner, the first low pressure runner can be enclosed with the inner wall of lubricating bushings
Into the first low pressure chamber, the second low pressure runner can surround the second low pressure chamber with the inner wall of lubricating bushings, and the 3rd low pressure runner can be with profit
The inner wall of sliding bushing surrounds the 3rd low pressure chamber.As shown in Figures 9 and 10, side wall and piston of first high pressure runner close to the second end cap
Close to the distance between end face of the second end cap and the 3rd high pressure runner close to the first end cap side wall with piston close to first
The distance between end face of end cap is L2, when piston props up the first end cap, piston close to the end face of the second end cap with it is close
The distance between step surface of installation step of second end cap is S3, S3 >=0.5L2, when piston props up the second end cap, piston
The distance between step surface of installation step close to the end face of the first end cap and close to the first end cap is S4, S4 >=0.5L2.
The operation principle of the present embodiment is as follows：
During four-way valve power failure state, piston props up the first end cap, the first high pressure chest and the first high-pressure pipe D1, first cold
Solidifying pipe C1 connections, the first low pressure chamber are connected with the first low pressure exhaust pipe S1, the first evaporation tube E1, the second high pressure chest and the second high pressure
Air inlet pipe D2, the second condenser pipe C2 are connected, and the second low pressure chamber is connected with the second low pressure exhaust pipe S2, the second evaporation tube E2, are realized
Kind of refrigeration cycle；
When four-way valve obtains electricity condition, piston props up the second end cap, the second high pressure chest and the first high-pressure pipe D1, the first steaming
Pipe E1 connections are sent out, the second low pressure chamber is connected with the first low pressure exhaust pipe S1, the first condenser pipe C1, the 3rd high pressure chest and the second high pressure
Air inlet pipe D2, the second evaporation tube E2 are connected, and the 3rd low pressure chamber is connected with the second low pressure exhaust pipe S2, the second condenser pipe C2, are realized
Heating circulation.
In the present embodiment, as shown in figure 11, can be set as needed on piston the first high pressure chest and second is high
The connection of pressure chamber and the first intercommunicating pore or the first connectivity slot 127 that connect the second high pressure chest with the 3rd high pressure chest, can also be
Second that first low pressure chamber is connected with the second low pressure chamber and connected the second low pressure chamber with the 3rd low pressure chamber is set on piston
Intercommunicating pore or the second connectivity slot.Or first intercommunicating pore or the first connectivity slot, the second intercommunicating pore or the second connectivity slot all set.
And the first condenser pipe and the second condenser pipe can also be connected as desired by the first communicating pipe.Likewise, the first evaporation tube and
Second evaporation tube can be connected by the second communicating pipe.And the first high-pressure pipe and the second high-pressure pipe then set the 3rd company
Siphunculus connects, and the first low pressure exhaust pipe and the second low pressure exhaust pipe are connected by the 4th communicating pipe.
The design of four-way valve in the present embodiment, the special product on super-huge business air conditioner, and by original product knot
Dimension enlargement is carried out in structure design on the premise of obtaining identical refrigerating capacity, the weight of required valve body material is original structure
Four-way valve 2/5 or so, the manufacture cost of large capacity four-way valve can be substantially reduced.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention makes various changes and modifications, and without departing from the spirit of the present invention, should all belong to appended claims of the present invention and determine
The scope of justice.
Claims (10)
1. a kind of four-way valve, including main valve (1) and pilot valve (2), the main valve includes valve body (11) and piston (12), the piston
It can move axially in the inner cavity of valve body and along valve body, one end of valve body sets the first end cap (13) sealing, the other end to set
Second end cap (14) seals, and the inner cavity between piston and the first end cap is connected with the first adapter (21) of pilot valve, piston and second
Inner cavity between end cap is connected with the second adapter (22) of pilot valve, and the valve body has adapter hole (111) and connect by taking over hole
There are condenser pipe (C), evaporation tube (E), high-pressure pipe (D) and low pressure exhaust pipe (S), the high-voltage signal pipe (23) and high pressure of pilot valve
Air inlet pipe connects, and the low-voltage signal pipe (24) of pilot valve is connected with low pressure exhaust pipe, it is characterised in that：The inner cavity at the valve body both ends
Wall is equipped with the installation step (112) that the axial middle part to valve body from the end of valve body along valve body extends, two installation steps
Step surface (1121) is equipped with lubricating bushings (3), the piston and lubricating bushings positioned at the both sides in adapter hole, the installation step
Inner wall with the interior wall slip merged along lubricating bushings, the inner face of the lubricating bushings is butted on the step surface of installation step, moistens
The length of sliding bushing is more than the shift motion of piston.
2. four-way valve according to claim 1, it is characterised in that：The inner wall of the lubricating bushings, which has, to be used to be embedded in solid
The trapped fuel hole (31) of lubricating oil.
3. four-way valve according to claim 2, it is characterised in that：The trapped fuel hole is through hole or blind hole.
4. four-way valve according to any one of claims 1 to 3, it is characterised in that：The piston is along its axial direction from close to second
One end of end cap is equipped with high pressure runner I (128) and high pressure runner II (129), high-pressure spray successively to one end close to the first end cap
Road II relatively high pressure runners I is rotated by 90 ° setting, and high pressure runner I can surround high pressure chest I, high pressure runner with the inner wall of lubricating bushings
II can surround high pressure chest II with the inner wall of lubricating bushings, low pressure runner I is equipped with the back side of high pressure runner I, in high pressure runner II
The back side be equipped with low pressure runner II, low pressure runner I can surround low pressure chamber I with the inner wall of lubricating bushings, and low pressure runner II can be with profit
The inner wall of sliding bushing surrounds low pressure chamber II, high pressure runner I close to the second end cap side wall with piston close to the end face of the second end cap
The distance between and high pressure runner II close to the first end cap side wall and piston close to the distance between end face of the first end cap
It is L1, when piston props up the first end cap, piston is close to the end face of the second end cap and the installation step close to the second end cap
The distance between step surface is S1, S1 >=0.5L1, when piston props up the second end cap, piston close to the end face of the first end cap with
The distance between step surface of installation step close to the first end cap is S2, S2 >=0.5L1.
5. four-way valve according to any one of claims 1 to 3, it is characterised in that：The valve body have eight adapter holes, two
Adapter Kong Weiyi groups are simultaneously circumferentially evenly distributed with along valve body axial alignment, four groups of adapter holes along valve body, and eight adapter holes connect first respectively
Condenser pipe (C1), the second condenser pipe (C2), the first evaporation tube (E1), the second evaporation tube (E2), the first high-pressure pipe (D1),
Two high-pressure pipes (D2), the first low pressure exhaust pipe (S1) and the second low pressure exhaust pipe (S2), wherein the first condenser pipe and second
Evaporation tube is arranged in same group of adapter hole and the first condenser pipe is provided close in the adapter hole of the second end cap, the second condenser pipe and the
One evaporation tube is arranged in same group of adapter hole, and the first condenser pipe is opposite with the first evaporation tube, the second evaporation tube and the second condenser pipe
Relatively, the first high-pressure pipe is arranged in same group of adapter hole with the second high-pressure pipe and the first high-pressure pipe is provided close to
In the adapter hole of second end cap, the first low pressure exhaust pipe and the second low pressure exhaust pipe be arranged in same group of adapter hole, the first high pressure
Air inlet pipe is opposite with the first low pressure exhaust pipe, the second high-pressure pipe is opposite with the second low pressure exhaust pipe, the high pressure of the pilot valve
Signal pipe is connected with the first high-pressure pipe and/or the second high-pressure pipe, the low-voltage signal pipe and the first low pressure exhaust of pilot valve
Pipe and/or the connection of the second low pressure exhaust pipe.
6. four-way valve according to claim 5, it is characterised in that：The piston is along its axial direction from close to the one of the second end cap
Hold and be equipped with the first high pressure runner (121), the second high pressure runner (122) and the 3rd high-pressure spray successively close to one end of the first end cap
Road (123), wherein the second high pressure runner is rotated by 90 ° setting with respect to the first high pressure runner, the first high pressure runner can be with lubricating bushings
Inner wall surround the first high pressure chest, the second high pressure runner can surround the second high pressure chest, the 3rd high-pressure spray with the inner wall of lubricating bushings
Road can surround the 3rd high pressure chest with the inner wall of lubricating bushings, and the first low pressure runner (124) is equipped with the back side of the first high pressure runner,
The second low pressure runner (125) is equipped with the back side of the second high pressure runner, the 3rd lowpressure stream is equipped with the back side of the 3rd high pressure runner
Road (126), the first low pressure runner can surround the first low pressure chamber with the inner wall of lubricating bushings, and the second low pressure runner can be with lubricating bushings
Inner wall surround the second low pressure chamber, the 3rd low pressure runner can surround the 3rd low pressure chamber with the inner wall of lubricating bushings；
When piston props up the first end cap, the first high pressure chest is connected with the first high-pressure pipe (D1), the first condenser pipe (C1), the
One low pressure chamber is connected with the first low pressure exhaust pipe (S1), the first evaporation tube (E1), the second high pressure chest and the second high-pressure pipe
(D2), the second condenser pipe (C2) connects, and the second low pressure chamber is connected with the second low pressure exhaust pipe (S2), the second evaporation tube (E2)；
When piston props up the second end cap, the second high pressure chest is connected with the first high-pressure pipe (D1), the first evaporation tube (E1), the
Two low pressure chambers are connected with the first low pressure exhaust pipe (S1), the first condenser pipe (C1), the 3rd high pressure chest and the second high-pressure pipe
(D2), the second evaporation tube (E2) connects, and the 3rd low pressure chamber is connected with the second low pressure exhaust pipe (S2), the second condenser pipe (C2).
7. four-way valve according to claim 6, it is characterised in that：Side wall of first high pressure runner close to the second end cap
Leaned on piston close to the distance between end face of the second end cap and the 3rd high pressure runner close to the side wall of the first end cap with piston
The distance between end face of nearly first end cap is L2, and when piston props up the first end cap, piston is close to the end face of the second end cap
The distance between step surface of installation step close to the second end cap is S3, S3 >=0.5L2, when piston props up the second end cap
When, piston close to the end face of the first end cap with close to the distance between step surface of installation step of the first end cap be S4, S4 >=
0.5L2。
8. four-way valve according to claim 6, it is characterised in that：The piston has the first high pressure chest and the second high pressure
The first intercommunicating pore or the first connectivity slot (127) that chamber connects and connects the second high pressure chest with the 3rd high pressure chest；
The first low pressure chamber is connected with the second low pressure chamber and by the second low pressure chamber and the 3rd low pressure chamber alternatively, the piston has
The second intercommunicating pore or the second connectivity slot of connection；
The first high pressure chest is connected with the second high pressure chest and by the second high pressure chest and the 3rd high pressure chest alternatively, the piston has
The first intercommunicating pore or the first connectivity slot (127) of connection, the piston have the first low pressure chamber is connected with the second low pressure chamber with
And the second intercommunicating pore or the second connectivity slot for connecting the second low pressure chamber with the 3rd low pressure chamber.
9. four-way valve according to claim 6, it is characterised in that：First condenser pipe and the second condenser pipe pass through first
Communicating pipe connects；Alternatively, first evaporation tube and the second evaporation tube are connected by the second communicating pipe；Alternatively, described first is cold
Solidifying pipe is connected with the second condenser pipe by the first communicating pipe, and first evaporation tube and the second evaporation tube are connected by the second communicating pipe
It is logical.
10. four-way valve according to claim 6, it is characterised in that：First high-pressure pipe and the second high pressure admission
Pipe is connected by third connecting pipe, and the first low pressure exhaust pipe and the second low pressure exhaust pipe are connected by the 4th communicating pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157589.1A CN104121390B (en) | 2013-04-28 | 2013-04-28 | A kind of four-way valve |
| CN201410821874.3A CN104676048B (en) | 2013-04-28 | 2013-04-28 | A kind of four-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157589.1A CN104121390B (en) | 2013-04-28 | 2013-04-28 | A kind of four-way valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410821874.3A Division CN104676048B (en) | 2013-04-28 | 2013-04-28 | A kind of four-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104121390A CN104121390A (en) | 2014-10-29 |
| CN104121390B true CN104121390B (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310157589.1A Active CN104121390B (en) | 2013-04-28 | 2013-04-28 | A kind of four-way valve |
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| Country | Link |
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| CN (1) | CN104121390B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879530B (en) * | 2015-04-03 | 2017-07-07 | 上海高迪亚电子系统有限公司 | A kind of plunger type electromagnetism four-way reversing valve |
| CN105757287A (en) * | 2016-04-27 | 2016-07-13 | 常州沛德水处理设备有限公司 | Four-way reversing valve for automatic cleaning system of condenser |
| CN110094547A (en) * | 2018-01-27 | 2019-08-06 | 浙江盾安机械有限公司 | A kind of large capacity reversal valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966194A (en) * | 1988-07-13 | 1990-10-30 | Ranco Japan Ltd. | Four-way switching valve device |
| CN2649885Y (en) * | 2003-09-03 | 2004-10-20 | 浙江三花集团有限公司 | Electromagnetic four-way change valve |
| CN201145063Y (en) * | 2008-01-09 | 2008-11-05 | 浙江新三荣制冷有限公司 | Large-capacity four-way reversing valve |
| CN101968128A (en) * | 2010-11-08 | 2011-02-09 | 浙江盾安机械有限公司 | High-capacity four-way reversing valve |
| CN102242814A (en) * | 2011-04-21 | 2011-11-16 | 浙江新三荣制冷有限公司 | Piston type four-way reversing valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5868561A (en) * | 1981-10-21 | 1983-04-23 | Hitachi Ltd | Four-way valve |
-
2013
- 2013-04-28 CN CN201310157589.1A patent/CN104121390B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966194A (en) * | 1988-07-13 | 1990-10-30 | Ranco Japan Ltd. | Four-way switching valve device |
| CN2649885Y (en) * | 2003-09-03 | 2004-10-20 | 浙江三花集团有限公司 | Electromagnetic four-way change valve |
| CN201145063Y (en) * | 2008-01-09 | 2008-11-05 | 浙江新三荣制冷有限公司 | Large-capacity four-way reversing valve |
| CN101968128A (en) * | 2010-11-08 | 2011-02-09 | 浙江盾安机械有限公司 | High-capacity four-way reversing valve |
| CN102242814A (en) * | 2011-04-21 | 2011-11-16 | 浙江新三荣制冷有限公司 | Piston type four-way reversing valve |
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| Publication number | Publication date |
|---|---|
| CN104121390A (en) | 2014-10-29 |
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