CN107489786B - Slidingtype switching valve and refrigerating circulation system - Google Patents
Slidingtype switching valve and refrigerating circulation system Download PDFInfo
- Publication number
- CN107489786B CN107489786B CN201710433433.XA CN201710433433A CN107489786B CN 107489786 B CN107489786 B CN 107489786B CN 201710433433 A CN201710433433 A CN 201710433433A CN 107489786 B CN107489786 B CN 107489786B
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- 230000004087 circulation Effects 0.000 title claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims description 49
- 239000012530 fluid Substances 0.000 claims description 19
- 241000278713 Theora Species 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- F16K11/0655—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 with flat slides
-
- 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
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention provides the slidingtype switching valve and refrigerating circulation system that can inhibit the flow-reduction of the high pressure side liquid in refrigerating mode and heating mode.Four-way switching valve (10) has cylindric valve body (11) and sliding freely set on the spool (12) of the inside of the valve body (11), the valve member (24) of spool (12) has bowl portion (25) and flange part (26), flange part (26) be equipped be formed in heavy wall shape the thick wall portion (27) on the periphery in a bowl portion (25) and from thick wall portion (27) towards axial side and other side extension and compared with thick wall portion (27) thinner formation thinner wall section (28).
Description
Technical field
The present invention relates to slidingtype switching valve and refrigerating circulation systems.
Background technique
Currently, as the refrigerating cycle utilized in the air conditioners such as air-conditioning indoors, the circulation side for making refrigerant is utilized
To the refrigerating cycle of reversion, when refrigerating mode (refrigeration) operating, to make refrigerant via compressor, outdoor heat exchanger, swollen
Swollen valve and indoor heat exchanger and to compressor circulation, and when heating mode (heating) operating when, make refrigerant via compression
Machine, indoor heat exchanger, expansion valve and outdoor heat exchanger and to compressor circulation.As such system made in refrigerating cycle
The flow channel switching valve (so-called, four-way switching valve) of the closed loop flow path reversion of cryogen, the inside for being widely used in valve body, which has, to be set
For the slidingtype switching valve of spool that can be free to slide.
Such as lower component is equipped in the valve body of slidingtype switching valve: being connect and with the outlet of compressor via D connector
The inflow port for flowing into high-pressure refrigerant；It is connect with the suction inlet of compressor via S connector to make refrigerant to compressor
The outflow port of circulation；The indoor side ports being connect via E connector with indoor heat exchanger；And via C connector and with outdoor
The outdoor side ports of heat exchanger connection.Moreover, slidingtype switching Vavle switching refrigerating mode and heating mode, in the refrigerating mode,
Make to flow out port using the valve member for the spool for sliding into side and be connected to interior side ports, and using making to flow inside valve body
Inbound port is connected to outdoor side ports, in the heating mode, makes to flow out port and outdoor using the valve member for sliding into the other side
Side ports connection, and using make inside valve body flow into port with interior side ports be connected to.
As such slidingtype switching valve, cutting when proposing the switching for being designed as preventing refrigerating mode and heating mode
Change construction that is bad and preventing the machine caused by rising because of pressure anomaly from stopping (for example, referring to patent document 1).This is specially
Existing slidingtype switching valve documented by sharp document 1 has the plastic valve portion with bowl portion (recess portion) and flange part
Part (sliding valve core), and the width direction middle part at the both ends of flange part is formed with incision hole portion.These cut hole portion and exist
Middle position when pattern switching bypasses inflow port via indoor side ports and outdoor side ports with outflow port
Connection, so that abnormal pressure be inhibited to rise, and the case where prevent compressor from stopping.Also, in existing slidingtype switching valve
In, the size of hole portion is cut, by suitably setting to inhibit the inflow being connected to from bypass in the middle position of valve member
The flow for the central fluid that port is flowed out to outflow port becomes excessive.By controlling intermediate flow like this, carry out suppression mode
The reduction of the pressure difference of high-pressure side and low-pressure side when switching, to prevent the switching of spool bad.
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 62-98872 bulletin
However, realizing pressure when pattern switching in such existing slidingtype switching valve recorded in patent document 1
Power rises and switches extremely undesirable improvement, but has the flow drop for generating refrigerating mode and the high pressure side liquid in heating mode
A possibility that low.That is, as described above, the flange part of valve member is along glide direction extension, thus in heating mode, indoor side
A part of mouth is covered by the flange part of side, and in refrigerating mode, a part of outdoor side ports is by the flange of the other side
Portion's covering, to increase from the flow path resistance for flowing into port towards the high pressure side liquid of indoor side ports, outdoor side ports.
Summary of the invention
The purpose of the present invention is to provide the flows for the high pressure side liquid being able to suppress in refrigerating mode and heating mode
Reduced slidingtype switching valve and refrigerating circulation system.
Slidingtype switching valve of the invention is the valve body for having tubular, slide axially is set to the valve body freely
Multiple ports of internal spool and the circumferential surface that above-mentioned valve body is set to opening mode, the spy of above-mentioned slidingtype switching valve
Sign is that above-mentioned multiple ports, which include, flows into port, flows into fluid to the inside of above-mentioned valve body；First port, phase
The diametrically opposite side of above-mentioned valve body is set to for the inflow port；Second port is set to the above-mentioned axis of above-mentioned first port
To side；And third port, it is set to the above-mentioned axial other side of above-mentioned first port, above-mentioned first port, above-mentioned second
Port, above-mentioned third port opening be set to above-mentioned valve body valve seat, above-mentioned spool be configured to have by first position with
It is moved between the second position to switch the valve member of flow path, above-mentioned first position is to slide into above-mentioned axial side and make above-mentioned the
The position that Single port is connected to above-mentioned second port, said second position are to slide into the above-mentioned axial other side and make above-mentioned first
The position that port is connected to above-mentioned third port, above-mentioned valve member are formed to have the bowl for the dome shape being open towards above-mentioned valve seat
Portion and the flange part extended outward from the opening edge in this bowl of portion are equipped in above-mentioned flange part: flat sliding contact surface,
With above-mentioned valve seat sliding contact；Thick wall portion is formed in the periphery in above-mentioned bowl portion with heavy wall shape；And thinner wall section, from the thickness
Wall portion extends towards above-mentioned axial side and the other side, and compared with the thick wall portion, opposite with above-mentioned sliding contact surface
Surface side is formed as thinner.
According to such present invention, side in the axial direction is formed by the flange part in valve member and the other side extend it is thin
Wall portion can enable flow through the upper surface side (surface side opposite with sliding contact surface) of thinner wall section.Therefore, though flange part to
The side and the other side of axial (glide direction) extend and cover a part of second port and third port, are also easy
Ground flows the fluid after the upper surface side by thinner wall section towards second port, third port, so as to inhibit high-pressure side
Fluid flow-reduction.
At this time, it is preferable that in the surface side opposite with above-mentioned sliding contact surface of above-mentioned flange part, above-mentioned thick wall portion with it is upper
It states and is equipped with step between thinner wall section, or be equipped with inclination from above-mentioned thick wall portion towards above-mentioned thinner wall section.
According to this structure, it by the way that step, inclination is arranged from thick wall portion towards thinner wall section, can be difficult to prevent the stream of fluid
It is dynamic, so as to reduce the flow path resistance of on high-tension side fluid.
Additionally, it is preferred that being, in the surface side opposite with above-mentioned sliding contact surface of above-mentioned flange part, at the end of above-mentioned thinner wall section
Edge is equipped with corner portion.
According to this structure, corner portion is arranged by the ora terminalis in thinner wall section, it can be smooth towards second port, third port
Ground guidance passes through the fluid of the upper surface side of thinner wall section, so as to be further reduced the flow path resistance of on high-tension side fluid.
Also, preferably, the above-mentioned axial length dimension of above-mentioned flange part be formed as than above-mentioned second port and on
Distance is big between stating the outer most edge of third port, and is formed in the above-mentioned axial side of the flange part and two ora terminalis of the other side
There is the recess portion concave towards above-mentioned bowl portion, when interposition of the above-mentioned spool between above-mentioned first position and said second position
When setting, the recess portion of above-mentioned axial direction side is connected to above-mentioned second port, and the recess portion of the above-mentioned axial other side and above-mentioned third
Port connection.
According to this structure, the length dimension of flange part is formed as than distance between the outer most edge of second port and third port
Greatly, and in the axial side of flange part and two ora terminalis of the other side it is formed with recess portion, the middle position in pattern switching,
The recess portion of side is connected to second port, and the recess portion of the other side is connected to third port, so as to prevent pattern switching bad
And pressure anomaly rises.
Refrigerating circulation system of the invention is characterized in that having: the compression compressed to the refrigerant as fluid
Machine；The First Heat Exchanger functioned in refrigerating mode as condenser；It is functioned in refrigerating mode as evaporator
The second heat exchanger；Refrigerant is set to expand the expansion to be depressurized between above-mentioned First Heat Exchanger and above-mentioned second heat exchanger
Mechanism；And slidingtype switching valve described in 1~4 any one of scheme.
According to such refrigerating circulation system of the invention, in refrigerating mode operating and when heating mode operates, with
It is above-mentioned identical, it is able to suppress the flow-reduction of the on high-tension side refrigerant in slidingtype switching valve.Therefore, it can be improved freezing to follow
The running efficiency of ring, so as to realize the raising of energy consumption efficiency.
The effect of invention is as follows.
Slidingtype switching valve according to the present invention and refrigerating circulation system, are able to suppress refrigerating mode and heating mode
In on high-tension side flow-reduction.
Detailed description of the invention
Fig. 1 is the brief configuration figure of the refrigerating cycle of an embodiment of the invention.
Fig. 2 is the cross-sectional view for showing the slidingtype switching valve of first embodiment used in above-mentioned refrigerating cycle.
Fig. 3 is the perspective view for showing valve member used in above-mentioned slidingtype switching valve.
Fig. 4 is the cross-sectional view for showing the flowing of the fluid in above-mentioned slidingtype switching valve.
Fig. 5 is the cross-sectional view for showing the flowing of the fluid in above-mentioned slidingtype switching valve, is in Fig. 4 to shown in view V-V line
Cross-sectional view.
Fig. 6 is the cross-sectional view for showing the slidingtype switching valve of second embodiment used in above-mentioned refrigerating cycle.
Fig. 7 is the perspective view for showing valve member used in above-mentioned slidingtype switching valve.
Fig. 8 is the cross-sectional view for showing the flowing of the fluid in above-mentioned slidingtype switching valve.
Fig. 9 is the cross-sectional view for showing the flowing of the fluid in above-mentioned slidingtype switching valve, is in Fig. 8 to view IX-IX line institute
The cross-sectional view shown.
Figure 10 is the top view for showing the pattern switching state of above-mentioned slidingtype switching valve.
Figure 11 is the cross-sectional view for enlargedly showing a part of slidingtype switching valve of variation of the invention.
Figure 12 is the cross-sectional view for enlargedly showing a part of slidingtype switching valve of other variations of the invention.
In figure:
1-refrigerating cycle, 2-compressors, 3-outdoor heat exchangers (First Heat Exchanger), (second changes 4-indoor heat exchangers
Hot device), 5-expansion valves (expansion mechanism), 10-four-way switching valves (slidingtype switching valve), 11-valve bodies, 11A-inflow end
Mouthful, 11B-first port, 11C-second port, 11D-third port, 12-spools, 19-valve seats, 24,24A, 24B,
24C-valve member, 25-bowl portions, 26-flange parts, 26A-sliding contact surface, 27-thick wall portions, 28-thinner wall sections, 28A,
28B-corner portion, 29-stage portions (step), 30-recess portions, 31-rakes (inclination).
Specific embodiment
Next, the embodiments of the present invention will be described with reference to the drawings.The refrigerating cycle 1 of present embodiment is used for room
The air conditioners such as interior air-conditioning are had the compressor 2 compressed to refrigerant, are functioned in refrigerating mode with condenser
As the outdoor heat exchanger 3 of First Heat Exchanger, in refrigerating mode using evaporator function as the second heat exchanger
Indoor heat exchanger 4, the conduct expanding machine for making refrigerant expand to be depressurized between outdoor heat exchanger 3 and indoor heat exchanger 4
The expansion valve 5 of structure switches over control as the four-way switching valve 10 of slidingtype switching valve and to the flow path of four-way switching valve 10
The pilot solenoid valve 6 of system, they are linked by refrigerant piping.In addition, it is not limited to expansion valve 5 as expansion mechanism,
It can be capillary.
The refrigerating cycle 1 constitutes refrigerant successively to compressor 2, four-way switching valve in heating mode (heating operation)
10, the heating circulation that indoor heat exchanger 4, expansion valve 5, outdoor heat exchanger 3, four-way switching valve 10 and compressor 2 flow.It is another
Aspect, refrigerating mode shown in Fig. 1 (refrigeration operation) is middle to constitute refrigerant successively to compressor 2, four-way switching valve 10, outdoor
The refrigeration cycle that heat exchanger 3, expansion valve 5, indoor heat exchanger 4, four-way switching valve 10 and compressor 2 flow.Heating circulation
Switching with refrigeration cycle based on the switching action of the obtained four-way switching valve 10 of pilot solenoid valve 6 by being carried out.
It is illustrated based on four-way switching valve of Fig. 2~Fig. 5 to first embodiment of the invention.As shown in Fig. 2, first
The four-way switching valve 10 of embodiment is configured to have: cylindric valve body 11；Sliding freely set on the valve body 11
Internal spool 12；The high-pressure side conduit (D connector) 13 being connected to the outlet of compressor 2；It is connected to the suction inlet of compressor 2
Low-pressure side conduit (S connector) 14；The indoor conduit (E connector) 15 being connected to indoor heat exchanger 4；And and outdoor heat exchanger
The outside conduit (C connector) 16 of 3 connections.
Cylindric valve body 11 has the cock body 17,18 for blocking its axial ends portion and is fixed on valve body 11
Internal valve seat 19, the cylinder barrel being closed as a whole are constituted.It is connected separately in cock body 17,18 and connects with pilot solenoid valve 6
Logical conduit 17A, 18A.Before valve seat 19 is inserted with low-pressure side conduit 14, indoor conduit 15 and outside conduit 16
End, and it is equipped with the opening for constituting aftermentioned first~third port 11B, 11C, 11D.The inner surface of valve seat 19 becomes to spool
12 carry out the guide surface 19A of sliding guidance.
In valve body 11, it is formed with multiple port 11A, 11B, 11C, 11D in its circumferential surface opening.That is, being equipped with and high pressure
Side conduit 13 connect and flow into inflow port 11A from high-pressure refrigerant H (fluid) to the inside of valve body 11, relative to inflow
Port 11A valve body 11 diametrically opposite side opening in the first port 11B, second port 11C and third end of valve seat 19
Mouth 11D.First port 11B is set to the approximately axially central of valve body 11, second port in the mode opposed with port 11A is flowed into
11C along valve body 11 axial direction and be adjacent to set on the side (left side of Fig. 2) of first port 11B, third port 11D is along valve master
The other side (right side of Fig. 2) for being axially set to first port 11B of body 11.
By first port connection low-pressure side conduit 14 11B make low pressure refrigerant L (fluid) flow out, come make this first
Port 11B constitutes outflow port.By in second port 11C junction chamber inner conduit 15, to make second port 11C constitute room
Interior side port, and by third port 11D junction chamber outer conduit 16, to make third port 11D constitute outdoor side
Mouthful.High-pressure side conduit 13 is fixed on the valve body 11 for flowing into the periphery port 11A, low-pressure side conduit 14, interior by solder brazing
Side conduit 15 and outside conduit 16 are fixed on the port periphery 11B, 11C, 11D of first~third by solder brazing respectively
Valve body 11 and valve seat 19.
Spool 12 is configured to include the pair of right and left piston body 21,22 with the inner peripheral surface sliding contact of valve body 11；Connection
A pair of pistons body 21,22 and axially extending connecting member 23 along valve body 11；And it is supported in the valve portion of connecting member 23
Part 24.The inner space of valve body 11 is separated into: the hyperbaric chamber R1 being formed between a pair of pistons body 21,22；It is formed in one
The first operating room R2 between piston body 21 and cock body 17；And be formed between another piston body 22 and cock body 18 second
Operating room R3.
Connecting member 23 is made of sheet metal, is formed with: along the axially extending of valve body 11 and being set as and valve seat 19
Guide surface 19A parallel link plate portion 23A；A side end bending of link plate portion 23A is fixed on to the fixation of piston body 21
Piece portion 23B；And the end side bending of link plate portion 23A is fixed on to the fixinig plate portion 23C of piston body 22.Linking
Plate portion 23A is formed with the retaining hole 23D kept to valve member 24 and the through hole at two positions making refrigerant circulate
23E。
Valve member 24 is plastic integral part, also as shown in Fig. 3~Fig. 5, is formed to have towards valve
The 19 bowl portions 25 being open concavely of seat and the flange part 26 extended outward from the opening edge in this bowl of portion 25.It is bowing in bowl portion 25
It is optionally formed to have the dome shape of oblong shape down, is inserted in the retaining hole 23D of connecting member 23.In bowl portion 25
Portion, being formed with is connected to first port 11B with second port 11C without making third port 11D be connected to or make first port
11B is connected to without making second port 11C be connected to such connected space R4 with third port 11D.
The shape in vertical view of flange part 26 is formed as rectangle, has the guide surface 19A sliding contact with valve seat 19
Flat sliding contact surface 26A, and be formed with and the continuous opening edge 26B of the inner surface in bowl portion 25 in sliding contact surface 26A.
Also, it is equipped in flange part 26: is formed in the thick wall portion 27 on the periphery in bowl portion 25 in heavy wall shape；In the axial direction from the thick wall portion 27
The thinner wall section 28 that side and the other side are formed extended at both sides；And in will be connected between thick wall portion 27 and thinner wall section 28 step-likely
Stage portion 29.
Thick wall portion 27 is located between link plate portion 23A and the guide surface 19A of valve seat 19, and across micro gap and with even
The link plate portion 23A of knot part 23 is opposite disposed.Herein, in the normal state, sliding contact surface 26A because hyperbaric chamber R1 be connected to
The pressure difference of space R4 and with guide surface 19A be in close contact, so that valve member 24 will not float.But four-way switching valve 10 with
13 side of high-pressure side conduit mode directed downwardly is arranged, and in pattern switching, pressure difference becomes smaller, and cannot say no valve member in this case
24 a possibility that floating from guide surface 19A, even if in this case, being connected to company also by the upper surface of thick wall portion 27
Knot tying portion 23A limits the movement of valve member 24, so that sliding contact surface 26A is with not exceeding needs far from guide surface 19A.By
This, though act on the pressure difference of valve member 24, the fluid for acting on valve member 24 flowing caused by power it is small, valve member
24 sliding contact surface 26A is also easy to be close to guide surface 19A again.
For thinner wall section 28 compared with thick wall portion 27, the surface side opposite with sliding contact surface 26A is formed as thinner, in the thinner wall section
The gap S bigger than the gap at thick wall portion 27 is formed between 28 and link plate portion 23A.Also, at three ends of thinner wall section 28
Edge and the surface side opposite with sliding contact surface 26A be equipped with arc-shaped corner portion 28A.Stage portion 29 by with sliding contact surface
The substantially orthogonal vertical guide structure in the upper surface (face opposite with sliding contact surface 26A) of 26A, thick wall portion 27 and thinner wall section 28
At, and be formed as with the periphery in bowl portion 25 under overlooking substantially with the arc-shaped of diameter.
In above four-way switching valve 10, if being imported via pilot solenoid valve 6 and conduit 18A to the second operating room R3
High-pressure refrigerant, then as shown in Fig. 2, piston body 22 is pressed and spool 12 is to the axial side (left side of Fig. 2) of valve body 11
Sliding.On the other hand, it is ejected if being imported to the first operating room R2 via pilot solenoid valve 6 and conduit 17A from compressor 2
High-pressure refrigerant H, then piston body 21 is pressed and spool 12 is slided to the axial other side (right side of Fig. 2) of valve body 11.This
Place will slide into the position (position shown in Fig. 2) of the spool 12 of the axial side of valve body 11 as first position, and will slide
The position to the spool 12 of the axial other side of valve body 11 is moved as the second position.
In the state that spool 12 is in first position, as shown in Fig. 2, the bowl portion 25 of valve member 24 utilizes its connected space
R4 is connected to first port 11B with second port 11C.Also, side is more leaned on than third port 11D since bowl portion 25 is located at, institute
It is connected to via the inside (hyperbaric chamber R1) of valve body 11 with port 11A is flowed into third port 11D.That is, spool 12 is in
As flowing into, port 11A is connected to the state of first position with third port 11D and first port 11B is connected to second port 11C
Refrigerating mode (refrigeration operation).
Also, in the state that spool 12 is in the second position, the bowl portion 25 of valve member 24 is made using its connected space R4
First port 11B is connected to third port 11D.Also, the other side is more leaned on than second port 11C since bowl portion 25 is located at, so
Second port 11C is connected to via the inside (hyperbaric chamber R1) of valve body 11 and with port 11A is flowed into.That is, spool 12 is in the
The state of two positions, which becomes, flows into that port 11A is connected to second port 11C and first port 11B is connected to third port 11D
Heating mode (heating operation).
In above such refrigerating mode (or heating mode), as also shown in Figure 4, the flange part of valve member 24 26
In Chong Die with a part of third port 11D (or second port 11C).Therefore, flow into hyperbaric chamber R1's from inflow port 11A
It is in high-pressure refrigerant H, by a part of the high-pressure refrigerant H after the through hole 23E of connecting member 23 because of flange part 26
Flowing is hindered, but as shown in figure 5, the seam between link plate portion 23A and thinner wall section 28 is flowed into around connecting member 23
The high-pressure refrigerant H of gap S is flowed towards third port 11D (or second port 11C).Also, flow into the high-pressure refrigeration of gap S
Agent H is flowed along the upper surface of thinner wall section 28, is successfully guided by corner portion 28A to third port 11D (or second end
Mouth 11C).
According to above present embodiment, thinner wall section 28 is formed by the flange part 26 in valve member 24, to make high compacting
The gap S between upper surface side and link plate portion 23A that cryogen H passes through thinner wall section 28, so as to draw high-pressure refrigerant H
It is directed at second port 11C, third port 11D.Therefore, though flange part 26 along valve body 11 axially-extending and to second end
Mouthful 11C, third port 11D a part covered, the high-pressure refrigeration after capable of also making the upper surface side by thinner wall section 28
Agent H is easily flowed towards second port 11C, third port 11D, so as to inhibit the flow-reduction of high-pressure refrigerant H.
Also, by the way that stage portion 29 is arranged between the thick wall portion 27 and thinner wall section 28 of valve member 24, it can be ensured that gap S
And be difficult to hinder the flowing of high-pressure refrigerant H, so as to reduce the flow path resistance of high-pressure refrigerant H.In addition, by thin-walled
Corner portion 28A is arranged in the ora terminalis in portion 28, can successfully guide towards second port 11C, third port 11D and pass through thinner wall section
The high-pressure refrigerant H of 28 upper surface side, so as to be further reduced the flow path resistance of high-pressure refrigerant H.
As noted previously, as the flow-reduction for the high-pressure refrigerant H being able to suppress in four-way switching valve 10, so freezing
When the refrigerating mode operating of circulation 1 and when heating mode operates, running efficiency can be improved, so as to realize energy consumption efficiency
Raising.
Next, being illustrated based on four-way switching valve of Fig. 6~Figure 10 to second embodiment of the present invention.This implementation
The four-way switching valve 10 of mode is compared with the valve member 24 of first embodiment, in terms of having variform valve member 24A
Difference, other structures are identical with first embodiment or similar.Hereinafter, being clicked through in detail to different from first embodiment
Row explanation, sometimes to identical with first embodiment or similar structure mark the same symbol and omission or schematic illustration.
In the four-way switching valve 10 of present embodiment, as shown in Figure 6, Figure 7, in the formation of flange part 26 of valve member 24A
Have recess portion 30, the recess portion 30 from the axial side of valve body 11 and two ora terminalis of the other side towards bowl portion 25 semicircular arcly
It is concave.In these recess portions 30 and in the surface side opposite with sliding contact surface 26A, the corner portion 30A equipped with arc-shaped.
According to the valve member 24A with such recess portion 30, also as shown in Figure 8, Figure 9, flowed around connecting member 23
Enter the high-pressure refrigerant H of the gap S between link plate portion 23A and thinner wall section 28 towards third port 11D (or second port
It 11C) flows, and the high-pressure refrigerant H after the through hole 23E for passing through connecting member 23 is linearly by recess portion 30 to the
Three port 11D (or second port 11C) flowing.Also, the high-pressure refrigerant H of gap S is flowed into along the upper surface of thinner wall section 28
Flowing, is successfully guided using the corner portion 30A of recess portion 30 to third port 11D (or second port 11C).
Also, as shown in Figure 10, valve member 24A is set as corresponding big with port 11B, 11C, 11D of first~third
Small and shape.That is, port 11B, 11C, 11D of first~third are equally spaced, relative to second port 11C and
Distance (length dimension L1) between the outer most edge of three port 11D, the axial length dimension L2 setting of the flange part 26 of valve member 24A
It is bigger (L1 < L2) than length dimension L1.Also, the depth dimensions L3 of recess portion 30 is set as, from the length dimension L2 of flange part 26
Length (L2-2L3) (L1 > L2- smaller than length dimension L1 after subtracting the depth dimensions L3 (2L3) of the recess portion 30 of two ora terminalis
2L3)。
Therefore, as shown in (A) of Figure 10, in the first position (or second position of heating mode) of refrigerating mode, i.e.,
So that flange part 26 is covered a part of third port 11D (or second port 11C), can also be expanded using recess portion 30 the
The flow path area of high-pressure refrigerant H at three port 11D (or second port 11C).Also, as shown in (B) of Figure 10, work as valve
When middle position of the component 24A between first position and the second position, the recess portion 30 of side is connected to second port 11C,
And the recess portion 30 of the other side is connected to third port 11D.In this way, hyperbaric chamber R1 and connected space R4 are via recess portion 30, second
Port 11C and third port 11D and be connected to, thus generate high-pressure refrigerant H a part to first port 11B flowing in
Between flow.Herein, will not be become smaller with the pressure difference that intermediate flow will not become excessive and high-pressure refrigerant H and low pressure refrigerant L
Mode set the size (depth dimensions L3) of recess portion 30.
Also, as shown in (C) of Figure 10, from first position to the second position (or from the second position to first position)
Mobile midway, if valve member 24A is moved to the position slightly offset from middle position, the recess portion 30 and second port of a side
The recess portion 30 of 11C (perhaps third port 11D) connection another party is not connected to third port 11D (or second port 11C).
At this point, since the area of side's recess portion 30 and the interconnecting part of second port 11C (or third port 11D) becomes larger, so intermediate
Flow becomes maximum, even if in this case, the pressure difference of high-pressure refrigerant H and low pressure refrigerant L will not become smaller, with such as
Upper such mode sets the length dimension L2 of the flange part 26 and depth dimensions L3 of recess portion 30.
According to above present embodiment, middle position in pattern switching is formed in the recessed of the left and right of flange part 26
Portion 30 is connected to second port 11C and third port 11D, even if thus comparing second port in the length dimension L2 of flange part 26
In the case that distance (length dimension L1) is big between the outer most edge of 11C and third port 11D, intermediate flow will not become zero,
So as to prevent pressure anomaly from rising.In addition, since excessive and high-pressure refrigerant H and low pressure will not be become with intermediate flow
The mode that the pressure difference of refrigerant L will not become smaller sets the size of recess portion 30, so can ensure pressure difference and prevent mode
Switch bad.
Also, it is the same as the above first embodiment, thinner wall section 28, energy is formed by the flange part 26 in valve member 24A
Enough inhibit the flow-reduction of high-pressure refrigerant H, and by forming recess portion 30 in valve member 24A, can make to pass through connecting member
High-pressure refrigerant H after 23 through hole 23E is linearly flowed to third port 11D (or second port 11C), so as to
Further suppress the flow-reduction of high-pressure refrigerant H.In addition, by using the corner portion 30A of recess portion 30 that high-pressure refrigerant H is suitable
It is guided sharply to third port 11D (or second port 11C), the flow path resistance of high-pressure refrigerant H can be further reduced.
In addition, the present invention is not limited to above embodiment, the other structures including can be realized the purpose of the present invention
It also include such deformation as shown below etc. Deng, the present invention.For example, in the above-described embodiment, enumerating the air such as room conditioning
The example of the refrigerating cycle 1 that conditioner is utilized indicates, but refrigerating cycle of the invention is not limited to air conditioner, if
It is the equipment for switching heating mode and refrigerating mode, then can be utilized in arbitrary equipment.Also, slidingtype switching of the invention
Valve is not limited to utilize in the switching valve in refrigerating cycle, can also make each of the various fluid circulations such as gas, liquid
It is utilized in kind piping system.
Also, in the above-described embodiment, valve member 24,24A flange part 26 be formed to have in connecting step-likely
Stage portion 29 between thick wall portion 27 and thinner wall section 28, but not limited to this, is also possible to shape shown in Figure 11.That is, In
In valve member 24B shown in Figure 11, flange part 26 is configured to have from thick wall portion 27 towards the inclined rake 31 of thinner wall section 28.
Using such rake 31, it can also make the high-pressure refrigerant H of the gap S flowed between link plate portion 23A and flange part 26
It is flowed along rake 31 towards third port 11D (or second port 11C).
Also, falling for arc-shaped in the above-described embodiment, is formed in the ora terminalis of the thinner wall section 28 of valve member 24,24A
Corner 28A, but not limited to this, is also possible to shape shown in Figure 12.That is, in the valve member 24C shown in Figure 12, thin
The ora terminalis of wall portion 28 is formed with the corner portion 28B of inclined plane type.It, also can be towards second port using such corner portion 28B
11C, third port 11D successfully guide the high-pressure refrigerant H for the upper surface side for having passed through thinner wall section 28, so as to reduce height
The flow path resistance of compression refrigerant H.
Also, in the above-described 2nd embodiment, the length dimension L2 of the flange part 26 of valve member 24A is set as than second
Between the outer most edge of port 11C and third port 11D distance (length dimension L1) greatly, but the length ruler of the flange part in the present invention
It is very little can also be equidistant between the outer most edge of second port and third port, can also be than second port and third port
Outer most edge between distance it is small, can suitably set the length dimension of flange part.
Also, it in the above-described 2nd embodiment, is formed with recess portion 30 in two ora terminalis of flange part 26, but recess portion is not
It is required, it can suitably omit, and the shape of recess portion also can be selected arbitrarily.That is, as recess portion, be not limited to as
Above-mentioned second embodiment towards the concave recess portion 30 semicircular arcly of bowl portion 25, is also possible in quadrangle, triangle like that
The concave recess portion in the multilateral shapes such as shape ground is also possible to along the ora terminalis of flange part be in the recess portion formed in a zigzag, and can also
To be the ora terminalis integrally bending of flange part and the recess portion formed.
More than, embodiments of the present invention are illustrated in detail referring to attached drawing, but specific structure does not limit
In these embodiments, the present invention is also included within the design alteration etc. not departed from the range of purport of the invention.
Claims (6)
1. a kind of slidingtype switching valve has the valve body of tubular, slides axially freely set on the inside of the valve body
Spool and be set to opening mode above-mentioned valve body circumferential surface multiple ports, above-mentioned slidingtype switching valve is characterized in that,
Above-mentioned multiple ports, which include, flows into port, flows into fluid to the inside of above-mentioned valve body；First port, it is opposite
The diametrically opposite side of above-mentioned valve body is set in the inflow port；Second port is set to the above-mentioned axial direction of above-mentioned first port
Side；And third port, it is set to the above-mentioned axial other side of above-mentioned first port,
Above-mentioned first port, above-mentioned second port, above-mentioned third port are set to the valve seat of above-mentioned valve body with opening mode,
Above-mentioned spool is configured to the valve member for switching flow path by moving between the first location and the second location, above-mentioned
First position is the position for sliding into above-mentioned axial side and being connected to above-mentioned first port with above-mentioned second port, above-mentioned second
Position is the position for sliding into the above-mentioned axial other side and being connected to above-mentioned first port with above-mentioned third port,
The opening edge that above-mentioned valve member is formed to have towards the bowl portion of the dome shape of above-mentioned valve seat opening and from this bowl of portion is outside
The flange part of Fang Yanshen,
It is equipped in above-mentioned flange part: flat sliding contact surface, with above-mentioned valve seat sliding contact；Thick wall portion, with heavy wall shape
It is formed in the periphery in above-mentioned bowl portion；And thinner wall section, extend from the thick wall portion to above-mentioned axial side and the other side, and
Compared with the thick wall portion, the surface side opposite with above-mentioned sliding contact surface is formed as thinner,
For above-mentioned valve member at above-mentioned first position, above-mentioned flange part covers a part of above-mentioned third port；Above-mentioned valve member
In said second position, above-mentioned flange part covers a part of above-mentioned second port.
2. slidingtype switching valve according to claim 1, which is characterized in that
In the surface side opposite with above-mentioned sliding contact surface of above-mentioned flange part, it is equipped between above-mentioned thick wall portion and above-mentioned thinner wall section
Step, or rake is equipped with from above-mentioned thick wall portion towards above-mentioned thinner wall section.
3. slidingtype switching valve according to claim 1 or 2, which is characterized in that
In the surface side opposite with above-mentioned sliding contact surface of above-mentioned flange part, corner portion is equipped in the ora terminalis of above-mentioned thinner wall section.
4. slidingtype switching valve according to claim 1 or 2, which is characterized in that
The above-mentioned axial length dimension of above-mentioned flange part is formed as more outermost than above-mentioned second port and above-mentioned third port
Intermarginal distance is big, and is formed in the above-mentioned axial side of the flange part and two ora terminalis of the other side recessed towards above-mentioned bowl portion
Under recess portion,
When middle position of the above-mentioned spool between above-mentioned first position and said second position, above-mentioned axial direction side it is recessed
Portion is connected to above-mentioned second port, and the recess portion of the above-mentioned axial other side is connected to above-mentioned third port.
5. slidingtype switching valve according to claim 3, which is characterized in that
The above-mentioned axial length dimension of above-mentioned flange part is formed as more outermost than above-mentioned second port and above-mentioned third port
Intermarginal distance is big, and is formed in the above-mentioned axial side of the flange part and two ora terminalis of the other side recessed towards above-mentioned bowl portion
Under recess portion,
When middle position of the above-mentioned spool between above-mentioned first position and said second position, above-mentioned axial direction side it is recessed
Portion is connected to above-mentioned second port, and the recess portion of the above-mentioned axial other side is connected to above-mentioned third port.
6. a kind of refrigerating circulation system, which is characterized in that have:
The compressor that refrigerant as fluid is compressed；It first is changed in refrigerating mode as what condenser functioned
Hot device；The second heat exchanger functioned in refrigerating mode as evaporator；Make refrigerant above-mentioned First Heat Exchanger with it is upper
State the expansion mechanism expanded between the second heat exchanger to be depressurized；And slidingtype described in any one of Claims 1 to 5
Switching valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-117284 | 2016-06-13 | ||
| JP2016117284A JP6476152B2 (en) | 2016-06-13 | 2016-06-13 | Sliding switching valve and refrigeration cycle system |
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| Publication Number | Publication Date |
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| CN107489786A CN107489786A (en) | 2017-12-19 |
| CN107489786B true CN107489786B (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710433433.XA Active CN107489786B (en) | 2016-06-13 | 2017-06-09 | Slidingtype switching valve and refrigerating circulation system |
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| JP (1) | JP6476152B2 (en) |
| CN (1) | CN107489786B (en) |
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| US9359243B2 (en) | 2014-05-13 | 2016-06-07 | Corning Incorporated | Transparent glass-ceramic articles, glass-ceramic precursor glasses and methods for forming the same |
| JP2019124337A (en) * | 2018-01-19 | 2019-07-25 | 株式会社鷺宮製作所 | Slide-type selector valve, and refrigeration cycle system including the same |
| JP6832299B2 (en) * | 2018-01-19 | 2021-02-24 | 株式会社鷺宮製作所 | Sliding switching valve and refrigeration cycle system equipped with it |
| JP6580724B2 (en) * | 2018-01-25 | 2019-09-25 | 株式会社不二工機 | Flow path switching valve and valve seat member used therefor |
| JP6983410B2 (en) * | 2018-08-23 | 2021-12-17 | 株式会社不二工機 | Flow switching valve |
| JP6947401B2 (en) * | 2018-08-23 | 2021-10-13 | 株式会社不二工機 | Flow switching valve |
| JP6979705B2 (en) * | 2019-05-07 | 2021-12-15 | 株式会社不二工機 | Flow switching valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51100326U (en) * | 1975-02-10 | 1976-08-12 | ||
| JPS6298872U (en) * | 1985-12-12 | 1987-06-24 | ||
| JPH0325461Y2 (en) * | 1986-05-12 | 1991-06-03 | ||
| US6409807B1 (en) * | 2000-05-23 | 2002-06-25 | Litton Systems, Inc. | Linear gas valve cycle control, shut-off-valve and self test |
| JP2002022315A (en) * | 2000-07-04 | 2002-01-23 | Ranco Japan Ltd | Four-way selector valve of high efficiency |
| JP4116458B2 (en) * | 2003-02-10 | 2008-07-09 | 株式会社不二工機 | Flow path switching valve |
| CN201045419Y (en) * | 2007-05-18 | 2008-04-09 | 浙江三花制冷集团有限公司 | Small-sized electromagnetical four-way change valve |
| JP5172276B2 (en) * | 2007-10-29 | 2013-03-27 | 日立アプライアンス株式会社 | Four-way switching valve and refrigeration cycle apparatus using the same |
| CN104930210B (en) * | 2014-03-17 | 2018-03-13 | 浙江三花制冷集团有限公司 | A kind of slidingtype reversal valve sliding block and slidingtype reversal valve |
| CN104964490B (en) * | 2015-06-25 | 2017-07-28 | 广东美的暖通设备有限公司 | Four-way valve and air-conditioning system |
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2016
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| Publication number | Publication date |
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| CN107489786A (en) | 2017-12-19 |
| JP2017223249A (en) | 2017-12-21 |
| JP6476152B2 (en) | 2019-02-27 |
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