CN107355563B - Reversal valve and refrigeration system with it - Google Patents
Reversal valve and refrigeration system with it Download PDFInfo
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- CN107355563B CN107355563B CN201610305102.3A CN201610305102A CN107355563B CN 107355563 B CN107355563 B CN 107355563B CN 201610305102 A CN201610305102 A CN 201610305102A CN 107355563 B CN107355563 B CN 107355563B
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- valve
- spool portion
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- reversal
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Classifications
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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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/048—Electromagnetically actuated valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention provides a kind of reversal valve and with its refrigeration system, wherein reversal valve includes: valve body, and the valve seat in valve body is arranged in, and valve seat includes upper valve base and lower valve base, it is provided with the first and second valve port on upper valve base, third and the 4th valve port are set on lower valve base；Sliding valve core, with inner passage, sliding valve core is arranged in valve chamber and between upper valve base and lower valve base, sliding valve core includes the first and second spool portion, and the first spool portion and upper valve base cooperate, and the second spool portion and lower valve base cooperate, sliding valve core has the first and second positions, when sliding valve core is located at first position, first is connected to the 4th valve port by inner passage, and second is connected to third valve port by valve chamber；When sliding valve core is located at the second position, second is connected to the 4th valve port by inner passage, and first is connected to third valve port by valve chamber.Technical solution of the present invention can be effectively reduced refrigerant and flow through generated pressure loss when reversal valve.
Description
Technical field
The present invention relates to refrigerating fields, in particular to a kind of reversal valve and with its refrigeration system.
Background technique
Current air-conditioning system realizes the conversion function of refrigeration and heating using four-way reversing valve.It is in the prior art
Four-way valve is generally divided into two classes.One kind is traditional four-way valve, and another kind of is plunger type electromagnetic valve.It is described in detail below existing
Two class reversal valves in technology.
The prior art one: traditional four-way valve.As shown in Figure 1, reversal valve includes main valve 100 and pilot valve 200.Main valve 100
Sliding valve core 104 is arranged in valve chamber 107, and sliding valve core 104 abuts valve seat 105 and makees opposite slide.Adapter tube 106c, adapter tube 106s
It is welded on valve seat 105 with adapter tube 106e and is connected to chamber 107, adapter tube 106d is welded on valve body and is connected to chamber 107.
Adapter tube 106d is connected to the air outlet of compressor 110, and adapter tube 106s is connected to the suction port of compressor 110, adapter tube 106e
It is connected to indoor heat exchanger 140, adapter tube 106c is connected to outdoor heat exchanger 120.In this way, passing through the work inside main valve 100
Plunger member 101 and connecting rod 103 drive sliding valve core 104 to slide relative to valve seat 105 together, to realize two kinds of refrigeration and heating
Switching between working condition.The negotiability of four-way reversing valve inner cavity depend primarily on low-pressure side runner (high-pressure side because stream
Body pressure is larger, and has enough negotiabilities).When system needs to switch to refrigeration work state, 101 He of piston element
Connecting rod 103 drives sliding valve core 104 to slide into left side together, and the piston element 101 of left end is abutted with the end cap 108 of left end, connect
Pipe 106e is connected to (low-pressure side) with adapter tube 106s, and adapter tube 106d is connected to (high-pressure side) with adapter tube 106c.The system of internal system at this time
Cryogen circulation path are as follows: 110 → adapter tube of compressor 106d → adapter tube 106c → 120 → restricting element of outdoor heat exchanger 130 →
140 → adapter tube of indoor heat exchanger 106e → adapter tube 106s → compressor 110.When from 106e to enter adapter tube 106s (low for refrigerant
Press side) when, the flow direction of the refrigerant has turned 180 °, pressure loss when above structure makes refrigerant flow through four-way valve compared with
Greatly.When system needs switch to heating working condition, sliding valve core 104 slides into right side, the piston element 101 of right end and the right side
The end cap at end abuts, and adapter tube 106c is connected to (low-pressure side) with adapter tube 106s, and adapter tube 106d is connected to (high-pressure side) with adapter tube 106e, this
When refrigerant circulation path are as follows: 110 → adapter tube of compressor 106d → adapter tube 106e → 140 → restricting element of indoor heat exchanger
130 → outdoor heat exchanger, 120 → adapter tube 106c → adapter tube 106s → compressor 110.When refrigerant enters adapter tube from 106c
When 106s (low-pressure side), the flow direction of the refrigerant has equally turned 180 °, above structure again such that refrigerant the pressure loss
It is larger.
The prior art two: plunger type electromagnetic valve.As shown in Fig. 2, plunger type electromagnetic valve is relative to the special of traditional four-way valve
Place is to increase a plunger assembly between two pistons in main valve chamber, secondly end is protected by sealing ring 10 and valve body 1
Dynamic sealing is held, a channel is formed in plunger tube 14, forms another channel between plunger tube 14 and valve body 1.Adapter tube E, adapter tube C with
Adapter tube S, adapter tube D split two sides, and adapter tube S and adapter tube C, adapter tube E are respectively communicated with by the channel between plunger tube 14 and valve body 1, are connect
Pipe D is then connected to by valve chamber or 14 inner cavity of plunger tube respectively with adapter tube C, adapter tube E.Thus adapter tube E → adapter tube S or adapter tube C
The flow path of → adapter tube S need not turn to and keep oblique straight-through, to reduce the pressure loss therebetween.But plunger tube present in it
14 still can generate disturbing influence to fluid；In the handoff procedure of left and right, sealing ring 10 needs the nozzle by adapter tube C, adapter tube E,
There must be certain compressive deformation to keep sealing after cooperating due to it with valve body 1, when it is by interrupted notch at nozzle, office
Portion will generate the variation that distending is shunk again, and so continuous breathing variation influences whether the durable reliability of sealing ring；And
And above structure itself needs two sealing rings, will result in frictional force naturally greatly and then affects its commutation ability；In addition by
It is thin-wall tube in valve body, ovality deformation can be generated in production and subsequent welding process, therefore and influence sealing ring 10
Sealing effect so will increase frictional force again to guarantee that sealing just needs to increase the pre- compression deformation of sealing ring 10 and influence it
Commutation ability.
Summary of the invention
The main purpose of the present invention is to provide a kind of reversal valve and with its refrigeration system, changed with solving the prior art
The larger problem of refrigerant pressure loss into valve.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of reversal valve, comprising: have valve chamber
Valve body, valve seat is provided in valve chamber, valve seat includes the upper valve base and lower valve base being oppositely arranged, and is provided on upper valve base along valve
The first valve port of body axially arranged and the second valve port, be provided on lower valve base the third valve port axially arranged along valve body with
And the 4th valve port；Sliding valve core, has an inner passage, sliding valve core be arranged in valve chamber and be located at upper valve base and lower valve base it
Between, sliding valve core includes mutually nested the first spool portion and the second spool portion, and the first spool portion and upper valve base cooperate, and second
Spool portion and lower valve base cooperate, wherein sliding valve core has first position and the second position, when sliding valve core is located at first position
When, the first valve port and the 4th valve port are connected to by inner passage, and the second valve port is connected to third valve port by valve chamber；Work as slide-valve
When core is located at the second position, the second valve port and the 4th valve port are connected to by inner passage, and the first valve port and third valve port pass through valve
Chamber connection.
Further, it is provided with sealing between the first spool portion and the second spool portion, so that inner passage and valve chamber shape
At sealing.
Further, annular accommodation space is formed between the first spool portion and the second spool portion, sealing is contained in annular
In accommodation space.
Further, it is provided with annular step on the inner wall in the first spool portion, annular step is arranged in sealing
At step surface.
Further, the second spool portion includes the neck for being threaded through the first valve core interior and the expansion below neck
Big portion, the size of the one end of expansion section far from neck are greater than the size of neck.
Further, the falling stop portion with the cooperation of the bottom in the first spool portion is provided on the outer wall of expansion section.
Further, flow blocking structure is provided in the second spool portion.
Further, flow blocking structure is flow blocking item, and the both ends of flow blocking item are arranged on the inner wall in the second spool portion, flow blocking item
Second spool portion is set close to one end of lower valve base.
Further, reversal valve further include: multiple connecting tubes, multiple connecting tubes include be connected to the first valve port E adapter tube,
The C adapter tube being connected to the second valve port, the D connection being connected to third valve port and the S being connected to the 4th valve port adapter tube.
Further, the first spool portion seals cooperation between one end and upper valve base of upper valve base, and the second spool portion is leaned on
Cooperation is sealed between one end and lower valve base of nearly lower valve base.
Further, the second spool portion has the first preset distance between one end and upper valve base of upper valve base.
Further, annular flange, the bottom surface of annular flange and the second spool portion are provided on the inner wall in the first spool portion
There is the second preset distance between one end of upper valve base.
According to another aspect of the present invention, a kind of refrigeration system, including compressor, first heat exchanger, second are provided
Heat exchanger, the throttle valve and reversal valve for being connected to first heat exchanger and second heat exchanger, reversal valve are above-mentioned commutation
Valve, the input end of compressor are connected to the 4th valve port of reversal valve, and the outlet end of compressor is connected to the third valve port of reversal valve,
First heat exchanger is connected to the second valve port of reversal valve, and second heat exchanger is connected to the first valve port of reversal valve.
It applies the technical scheme of the present invention, there is the upper valve base and lower valve base being oppositely arranged in valve body, be arranged on upper valve base
There are the first valve port and the second valve port, third valve port and the 4th valve port are provided on lower valve base.Between upper valve base and lower valve base
It is provided with sliding valve core, when sliding valve core is located at first position, the first valve port and the 4th valve port are connected to by inner passage, the
Two valve ports are connected to third valve port by valve chamber.In said structure since the first valve port and the 4th valve port are located at opposite set
On the upper valve base and lower valve base set, thus from the first valve port enter refrigerant need to only deflect lesser angle and without intermediary every
Gear, can flow out from the 4th valve port, to reduce the pressure loss of refrigerant so that reversal valve of the invention relative to
There is bigger negotiability for the reversal valve of similar sizes specification.Similarly, when sliding valve core is located at the second position, second
Valve port and the 4th valve port are connected to by inner passage, and the first valve port is connected to third valve port by valve chamber.In said structure by
The system for being located on the upper valve base and lower valve base being oppositely arranged in the second valve port and the 4th valve port, therefore entering from the second valve port
Cryogen need to only deflect lesser angle and without intermediary barrier, can flow out from the 4th valve port, to reduce the pressure of refrigerant
Power loss, so that reversal valve of the invention has bigger circulation energy for the reversal valve of similar sizes specification
Power.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the refrigeration system in the prior art one；
Fig. 2 shows the structural schematic diagrams of the reversal valve of the refrigeration system in the prior art two；
Fig. 3 shows the structural schematic diagram of the embodiment one of refrigeration system according to the present invention；
Fig. 4 shows the vertical profile structural schematic diagram of the reversal valve of the refrigeration system of Fig. 3；
Fig. 5 shows the vertical profile structural schematic diagram of another angle of the reversal valve of Fig. 4；
Fig. 6 shows the vertical profile structural schematic diagram of the valve body of the reversal valve of Fig. 4；
Fig. 7 shows the vertical profile structural schematic diagram of another angle of the valve body of Fig. 6；
Fig. 8 shows the vertical profile structural schematic diagram of the upper valve base of the reversal valve of Fig. 4；
Fig. 9 shows the vertical profile structural schematic diagram of another angle of the upper valve base of Fig. 8；
Figure 10 shows the vertical profile structural schematic diagram of the lower valve base of the reversal valve of Fig. 4；
Figure 11 shows the vertical profile structural schematic diagram of another angle of the lower valve base of Figure 10；
Figure 12 shows the vertical profile structural schematic diagram in the second spool portion of the reversal valve of Fig. 4；
Figure 13 shows the vertical profile structural schematic diagram in the first spool portion of the reversal valve of Fig. 4；
Figure 14 shows the vertical profile structural schematic diagram of another angle in the first spool portion of Figure 13；
Figure 15 shows the vertical profile structural schematic diagram of the connecting rod of the reversal valve of Fig. 4；
Figure 16 shows the vertical profile structural schematic diagram of another angle of the connecting rod of Figure 15；
Figure 17 shows the partial enlargement vertical profile structural schematic diagrams of the reversal valve of Fig. 4；
Figure 18 shows the vertical profile structural schematic diagram in the second spool portion of the embodiment two of reversal valve according to the present invention；
Figure 19 shows the vertical profile structural schematic diagram of another angle in the second spool portion of Figure 18；
Figure 20 shows the partial structural diagram of the embodiment three of reversal valve according to the present invention；
Figure 21 shows the vertical profile structural schematic diagram in the first spool portion of the reversal valve of Figure 20；And
Figure 22 shows the vertical profile structural schematic diagram of another angle in the first spool portion of Figure 21.
Wherein, the above drawings include the following reference numerals:
1, compressor；2, throttle valve；3, first heat exchanger；4, second heat exchanger；20, valve body；31, upper valve base；
311, the first valve port；312, the second valve port；32, lower valve base；321, third valve port；322, the 4th valve port；41, the first spool portion；
411, annular flange；42, the second spool portion；421, neck；422, expansion section；4221, falling stop portion；423, flow blocking item；51, E connects
Pipe；52, C takes over；53, D connection；54, S takes over；60, sealing；70, connecting rod.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figures 3 to 5, the reversal valve of embodiment one includes valve body 20 and sliding valve core with valve chamber.Wherein,
Valve seat is provided in valve chamber, valve seat includes the upper valve base 31 and lower valve base 32 being oppositely arranged, and is provided on upper valve base 31 along valve
The first valve port 311 of body 20 axially arranged and the second valve port 312 are provided with the axial direction arrangement along valve body 20 on lower valve base 32
Third valve port 321 and the 4th valve port 322；Sliding valve core, has inner passage, and sliding valve core is arranged in valve chamber and is located at
Between upper valve base 31 and lower valve base 32, sliding valve core includes mutually nested the first spool portion 41 and the second spool portion 42, and
One spool portion 41 cooperates with upper valve base 31, and the second spool portion 42 cooperates with lower valve base 32, wherein sliding valve core has first position
And the second position, when sliding valve core is located at first position, the first valve port 311 is connected to the 4th valve port 322 by inner passage,
Second valve port 312 is connected to third valve port 321 by valve chamber；When sliding valve core is located at the second position, the second valve port 312 and
Four valve ports 322 are connected to by inner passage, and the first valve port 311 is connected to third valve port 321 by valve chamber.
The technical solution of Application Example one, valve body 20 is interior to have the upper valve base 31 and lower valve base 32 being oppositely arranged, upper valve
It is provided with the first valve port 311 and the second valve port 312 on seat 31, is provided with third valve port 321 and the 4th valve on lower valve base 32
Mouth 322.It is provided with sliding valve core between upper valve base 31 and lower valve base 32, when sliding valve core is located at first position, the first valve port
311 are connected to the 4th valve port 322 by inner passage, and the second valve port 312 is connected to third valve port 321 by valve chamber.Above-mentioned
Since the first valve port 311 and the 4th valve port 322 are located on the upper valve base 31 and lower valve base 32 being oppositely arranged in structure,
The refrigerant entered from the first valve port 311 need to only deflect lesser angle and without intermediary barrier, can flow from the 4th valve port 322
Out, to reduce the pressure loss of refrigerant, so that the reversal valve of the present embodiment changing relative to similar sizes specification
There is bigger negotiability for valve.Similarly, when sliding valve core is located at the second position, the second valve port 312 and the 4th valve
Mouth 322 is connected to by inner passage, and the first valve port 311 is connected to third valve port 321 by valve chamber.In said structure due to
Two valve ports 312 and the 4th valve port 322 are located on the upper valve base 31 and lower valve base 32 being oppositely arranged, therefore from the second valve port
312 refrigerants entered need to only deflect lesser angle and without intermediary barrier, can flow out from the 4th valve port 322, to subtract
The small pressure loss of refrigerant, so that reversal valve of the invention has for the reversal valve of similar sizes specification
Bigger negotiability.In addition, in actual production, the planar processing precision of the sliding sealing surface of upper valve base 31 and lower valve base 32
It is easier to be guaranteed, therefore the leakproofness that sliding valve core is matched with upper valve base 31 and lower valve base 32 also becomes more readily available guarantor
Card.
Preferably, upper valve base 31 and lower valve base 32 are parallel construction, above structure can guarantee sliding valve core and valve seat it
Between leakproofness.
Preferably, in example 1, the commutation of reversal valve is realized by the switching control of electromagnetic system, shift motion
It is consistent substantially with the spacing of the first valve port 311, the second valve port 312.
Preferably, as shown in Figure 6 and Figure 7, in example 1, respectively there are two through-holes in upper and lower two side of valve body 20.Processing
When, fabricated part is obtained by processing methods such as vehicle, brill, punchings using tubing.
Preferably, as shown in Fig. 8 to 11, in example 1, two steps are all had on upper valve base 31 and lower valve base 32
Through-hole.When processing, fabricated part is obtained using D-shaped bar or forging, casting blank, then by processing methods such as vehicle, brills.Upper valve base 31
With the face of the first spool portion 41 cooperation according to the difference of its material, attrition process can be used before weldering or in postwelding wire pulling method again
Technology mode, to guarantee its surface quality.It the face of lower valve base 32 and the cooperation of the second spool portion 42, can according to the difference of its material
Using attrition process before welding or in the technology mode of postwelding wire pulling method again, to guarantee its surface quality.Because valve seat is more thick and solid
D shaped cross section and its length it is also less big, even if there will not be influences fit quality after welding using attrition process before welding
Deformation.
Preferably, in example 1, the first spool portion 41 and the second spool portion 42 are all made of the macromolecules such as nylon or PPS
Material passes through injection molded.The face that first spool portion 41 cooperates with upper valve base 31 passes through machining again, to guarantee its flatness
And surface roughness, to guarantee dynamic sealing and have lesser friction of motion resistance.Second spool portion 42 cooperates with lower valve base 32
Face pass through machining again, to guarantee its flatness and surface roughness, thus guarantee dynamic sealing and have it is lesser movement rub
Wipe resistance.
It should be noted that, sealing and lower valve base 32 upper valve base 31 and sliding valve core between similar to the prior art
Sealing between sliding valve core is guaranteed by the pressure difference in high-low pressure section.Frictional force is also big when pressure difference is big, but same
It is also big to switch power；Pressure difference small i.e. switching power hour, frictional force is also small.
As shown in Figures 3 to 5, in example 1, sealing is provided between the first spool portion 41 and the second spool portion 42
Portion 60, to seal the first spool portion 41 and the second spool portion 42.Above structure ensure that the first spool portion 41 and the second spool portion
Sealing between 42.
As shown in Fig. 3 to Fig. 5, Figure 13 and Figure 14, in example 1, annular is provided on the inner wall in the first spool portion 41
Stage portion, sealing 60 are arranged at the step surface of annular step.Specifically, the first spool portion 41 includes the first spool main body
And in the first spool main body and towards lower valve base 32 extend first annular lug boss, the inner wall of first annular lug boss
Step structure is formed between the bottom surface of the first spool main body, sealing 60 is preferably sealing ring, and sealing ring is arranged at above-mentioned
At stage structure.Since the relative position between the first spool portion 41 and the second spool portion 42 that are nested together is substantially
Fixed, therefore sealing 60 is static seal.In commutation process, sealing mated condition will not be changed significantly, i.e., not
Change in the presence of because of breathing caused by structure, to ensure that the durable reliability of sealing ring.Also therefore sealing 60 only needs to be arranged
Required sealing deflection, without increasing the excessive pre- compression deformation of sealing ring it is ensured that sealing effect, to guarantee
Reversal valve has good commutation ability.
It should be noted that being provided with annular step on the inner wall in the first spool portion 41, above structure easily facilitates note
Modeling processing.
As shown in Fig. 4, Figure 12 and Figure 17, in example 1, the second spool portion 42 includes being threaded through the first spool portion 41
Internal neck 421 and the expansion section 422 below neck 421, the size of the one end of expansion section 422 far from neck 421
Greater than the size of neck 421.Above structure moves back and forth the second spool portion 42 between the first location and the second location
In the process, the lower end of expansion section 422 can be located at always at the 4th valve port 322, to ensure that the first valve port 311 or
Two valve ports 312 can be connected with the 4th valve port 322.It should be noted that neck 421 is preferably basic with adapter tube E, adapter tube C
Identical shape and latus rectum.Expansion section is set as kidney-shaped, and width and the adapter tube S latus rectum of the bottom of expansion section are consistent substantially,
The length of the bottom of expansion section is consistent substantially with " stroke that the latus rectum of adapter tube S adds the second spool portion 42 ".
As shown in figure 12, in example 1, it is provided on the outer wall of expansion section 422 and matches with the bottom in the first spool portion 41
The falling stop portion 4221 of conjunction.Preferably, above-mentioned falling stop portion 4221 is bevel structure.Above structure plays position-limiting action, it is therefore prevented that
Sealing ring is deviate from from step structure, to further ensure the sealing between the first spool portion 41 and the second spool portion 42
Property.Certainly, those skilled in the art should know above-mentioned falling stop portion 4221 not necessarily bevel structure can also be that can prevent
The only step structure that sealing ring is deviate from from step structure.
As shown in figs. 4 and 17, in example 1, the one end and upper valve base 31 of the first spool portion 41 close to upper valve base 31
Between seal cooperation, i.e. the first spool portion 41 forms dynamic sealing pair with upper valve base 31.Second spool portion 42 is close to lower valve base 32
Cooperation is sealed between one end and lower valve base 32, i.e. the second spool portion 42 forms dynamic sealing pair with lower valve base 32, and above structure guarantees
Leakproofness between sliding valve core and valve seat.In addition, the second spool portion 42 close to upper valve base 31 one end and upper valve base 31 it
Between have the first preset distance L1, above-mentioned distance be more than or equal to 0.05mm, preferably above-mentioned first preset distance L1 be 0.05 to
Between 1.5mm.In the second spool portion 42 in moving process, above structure can prevent upper end and the upper valve in the second spool portion 42
Seat 31 generates friction, to reduce the second spool portion 42 resistance suffered in moving process.
As shown in Figure 3 and Figure 4, in example 1, reversal valve further include: multiple connecting tubes, multiple connecting tubes include with
The E adapter tube 51 of first valve port 311 connection, the C adapter tube 52 being connected to the second valve port 312, the D connection being connected to third valve port 321
53 and the S adapter tube 54 that is connected to the 4th valve port 322.Preferably, above-mentioned E adapter tube 51, C adapter tube 52, D connection 53 and S adapter tube
It is parallel to each other between 54.Above structure is not further such that low pressure flow path turns to, and only deviates from a distance, to reduce
The pressure loss of refrigerant.
Preferably, the axis of S adapter tube 54 is located between the axis of E adapter tube 51 and the axis of C adapter tube 52.Above structure makes
For sliding valve core at first position and the second position, low-pressure side flow path keeps identical.
Preferably, multiple connecting tubes are by being welded to connect on valve body 20.
As shown in Fig. 4, Figure 15 and Figure 16, reversal valve further includes the driving part for driving sliding valve core mobile.The drive
Dynamic component includes connecting rod 70 and piston.Second spool portion 42 is inlaid in the tie rod holes of connecting rod 70, and connecting rod 70 and piston pass through spiral shell
Nail connection, they can horizontally slip on valve body 20, valve seat together.When processing, shaped using plate through punching.
As shown in Figure 18 and Figure 19, the difference of the reversal valve of embodiment two and embodiment one is the tool in the second spool portion 42
Body structure.Specifically, in example 2, flow blocking structure is provided in the second spool portion 42.Above structure reduces the second valve
It is influenced caused by flow dead zone fluid flow in core 42.
As shown in Figure 18 and Figure 19, in example 2, flow blocking structure is flow blocking item 423, and the both ends of flow blocking item 423 are arranged
On 42 inner wall of the second spool portion, the second spool portion is arranged in close to one end of lower valve base 32 in flow blocking item 423.Above structure letter
It is single, easy to process.
As shown in Figure 20 to Figure 22, the reversal valve of embodiment three is the tool in the first spool portion 41 with the difference of embodiment one
Body structure.Specifically, in the third embodiment, the first spool portion 41 seals between one end and upper valve base 31 of upper valve base 31 and matches
It closes, is provided with annular flange 411 on the inner wall in the first spool portion 41, the bottom surface of annular flange 411 and the second spool portion 42 are close
There is the second preset distance L2, the one end and lower valve base 32 of the second spool portion 42 close to lower valve base 32 between one end of upper valve base 31
Between seal cooperation.Above-mentioned second preset distance L2 be more than or equal to 0.05mm, preferably above-mentioned preset distance L2 be 0.05 to
Between 1.5mm.
Present invention also provides a kind of refrigeration systems, as shown in figure 3, according to the refrigeration system of the application include compressor 1,
Throttle valve 2 and the commutation of first heat exchanger 3, second heat exchanger 4, connection first heat exchanger 3 and second heat exchanger 4
Valve, wherein reversal valve is above-mentioned reversal valve.The input end of compressor 1 is connected to the 4th valve port 322 of reversal valve, compressor 1
Outlet end be connected to the third valve port 321 of reversal valve, first heat exchanger 3 is connected to the second valve port 312 of reversal valve, second
Heat exchanger 4 is connected to the first valve port 311 of reversal valve.Reduce the excellent of refrigerant pressure loss since above-mentioned reversal valve has
Point, therefore the refrigeration system with above-mentioned reversal valve also has the above advantages.Refrigeration system is enabled to using above-mentioned reversal valve
The efficiency of system increases.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of reversal valve characterized by comprising
Valve body (20) with valve chamber, is provided with valve seat in the valve chamber, and the valve seat includes the upper valve base being oppositely arranged
(31) and lower valve base (32) the first valve port axially arranged along the valve body (20), is provided on the upper valve base (31)
(311) and the second valve port (312) the third valve axially arranged along the valve body (20), is provided on the lower valve base (32)
Mouth (321) and the 4th valve port (322)；
Sliding valve core, has inner passage, and the sliding valve core is arranged in valve chamber and is located at the upper valve base (31) and described
Between lower valve base (32), the sliding valve core includes mutually nested the first spool portion (41) and the second spool portion (42), institute
It stating the first spool portion (41) and the upper valve base (31) cooperates, second spool portion (42) and the lower valve base (32) cooperate,
Wherein, the sliding valve core has first position and the second position, when the sliding valve core is located at the first position,
First valve port (311) is connected to the 4th valve port (322) by the inner passage, second valve port (312) with
The third valve port (321) is connected to by the valve chamber；When the sliding valve core is located at the second position, second valve
Mouth (312) is connected to the 4th valve port (322) by the inner passage, first valve port (311) and the third valve
Mouth (321) is connected to by the valve chamber.
2. reversal valve according to claim 1, which is characterized in that first spool portion (41) and second spool portion
(42) sealing (60) are provided between, so that the inner passage and the valve chamber are formed and sealed.
3. reversal valve according to claim 2, which is characterized in that first spool portion (41) and second spool portion
(42) annular accommodation space is formed between, the sealing (60) is contained in the annular accommodation space.
4. reversal valve according to claim 3, which is characterized in that be provided with ring on the inner wall in first spool portion (41)
Shape stage portion, the sealing (60) are arranged at the step surface of the annular step.
5. reversal valve according to claim 1, which is characterized in that second spool portion (42) includes being threaded through described the
The expansion section (422) one spool portion (41) internal neck (421) and be located at below the neck (421), the expansion section
(422) size of one end far from the neck (421) is greater than the size of the neck (421).
6. reversal valve according to claim 5, which is characterized in that be provided on the outer wall of the expansion section (422) and institute
State the falling stop portion (4221) of the bottom cooperation in the first spool portion (41).
7. reversal valve according to claim 1, which is characterized in that be provided with flow blocking knot in second spool portion (42)
Structure.
8. reversal valve according to claim 7, which is characterized in that the flow blocking structure is flow blocking item (423), the flow blocking
The both ends of item (423) are arranged on the inner wall in second spool portion (42), and the flow blocking item (423) is arranged in second valve
The one end of core (42) close to the lower valve base (32).
9. the reversal valve according to claim 1, which is characterized in that the reversal valve further include: multiple connecting tubes, it is the multiple
Connecting tube includes the E adapter tube (51) being connected to first valve port (311), the C adapter tube being connected to second valve port (312)
(52), the D connection (53) being connected to the third valve port (321) and the S being connected to the 4th valve port (322) adapter tube
(54)。
10. reversal valve according to any one of claim 1 to 9, which is characterized in that first spool portion (41) is close
Cooperation is sealed between one end and the upper valve base (31) of the upper valve base (31), second spool portion (42) is under described
Cooperation is sealed between one end and the lower valve base (32) of valve seat (32).
11. reversal valve according to claim 10, which is characterized in that second spool portion (42) is close to the upper valve base
(31) there is the first preset distance between one end and the upper valve base (31).
12. reversal valve according to claim 10, which is characterized in that be provided on the inner wall in first spool portion (41)
Annular flange (411), the bottom surface and second spool portion (42) of the annular flange (411) are close to the upper valve base (31)
There is the second preset distance between one end.
13. a kind of refrigeration system, including compressor (1), first heat exchanger (3), second heat exchanger (4), connection described the
The throttle valve (2) of one heat exchanger (3) and second heat exchanger (4), which is characterized in that the refrigeration system further includes that right is wanted
Reversal valve described in asking any one of 1 to 12, the input end of the compressor (1) and the 4th valve port (322) of the reversal valve
Connection, the outlet end of the compressor (1) are connected to the third valve port (321) of the reversal valve, the first heat exchanger (3)
It is connected to the second valve port (312) of the reversal valve, the first valve port of the second heat exchanger (4) and the reversal valve
(311) it is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305102.3A CN107355563B (en) | 2016-05-09 | 2016-05-09 | Reversal valve and refrigeration system with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305102.3A CN107355563B (en) | 2016-05-09 | 2016-05-09 | Reversal valve and refrigeration system with it |
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| Publication Number | Publication Date |
|---|---|
| CN107355563A CN107355563A (en) | 2017-11-17 |
| CN107355563B true CN107355563B (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610305102.3A Active CN107355563B (en) | 2016-05-09 | 2016-05-09 | Reversal valve and refrigeration system with it |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529444A (en) * | 2018-05-23 | 2019-12-03 | 浙江三花制冷集团有限公司 | A kind of reversal valve and the refrigeration system using the reversal valve |
| CN111120690B (en) * | 2018-10-31 | 2021-10-22 | 广东美芝精密制造有限公司 | Four-way valve |
| JP6893704B2 (en) * | 2019-08-23 | 2021-06-23 | 株式会社不二工機 | Flow switching valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002221375A (en) * | 2001-01-26 | 2002-08-09 | Matsushita Electric Ind Co Ltd | Four-way valve of air conditioner |
| KR100798559B1 (en) * | 2005-10-17 | 2008-01-28 | 가부시키가이샤 고베 세이코쇼 | Two stage screw compressor and compression refrigerator using the same |
| CN103541900B (en) * | 2012-07-12 | 2016-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary Compressor, refrigerant-cycle systems and control method thereof |
| JP2015075211A (en) * | 2013-10-11 | 2015-04-20 | ダイキン工業株式会社 | Flow passage selector valve and refrigerant circuit |
| CN104676043B (en) * | 2013-11-27 | 2018-02-02 | 浙江三花制冷集团有限公司 | A kind of refrigeration system and its four-way reversing valve |
| 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 |
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| CN107355563A (en) | 2017-11-17 |
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Effective date of registration: 20220824 Address after: 312500 Daming new area, economic development zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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