CN108692065B - Slidingtype switching valve and refrigerating circulation system - Google Patents

Slidingtype switching valve and refrigerating circulation system Download PDF

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Publication number
CN108692065B
CN108692065B CN201810225211.3A CN201810225211A CN108692065B CN 108692065 B CN108692065 B CN 108692065B CN 201810225211 A CN201810225211 A CN 201810225211A CN 108692065 B CN108692065 B CN 108692065B
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China
Prior art keywords
mentioned
valve
recess
valve seat
opening
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CN201810225211.3A
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Chinese (zh)
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CN108692065A (en
Inventor
木村宏光
上野知之
山中聪太郎
冈田聪
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Saginomiya Seisakusho Inc
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Saginomiya Seisakusho Inc
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Priority to JP2017075878A priority Critical patent/JP6687561B2/en
Priority to JP2017-075878 priority
Application filed by Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Publication of CN108692065A publication Critical patent/CN108692065A/en
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Publication of CN108692065B publication Critical patent/CN108692065B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-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
    • F16K11/065Multiple-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle

Abstract

The present invention provides the slidingtype switching valve and refrigerating circulation system that valve member can be made swimmingly to slide and can inhibit damage.Wide cut recess portion (271,273,281,283) is arranged throughout open area (A2) to closing region (A1), narrow recess portion (272,282), which is set to, closes region (A1), so as to obtain the oil in fluid (refrigerant), valve member (24) can be made swimmingly to slide.The beam portion (291,292) abutted with the upper surface (19A) of valve seat (19) continuously extends in X direction from the outer rim of valve opening portion (25A), to which the peripheral part of the wide cut recess portion (271,273,281,283) in sliding contact surface (26A) is difficult to enter in port (11C, 11D), and then it is able to suppress the damage of valve member (24).

Description

Slidingtype switching valve and refrigerating circulation system
Technical field
The present invention relates to slidingtype switching valve and refrigerating circulation systems.
Background technique
Now, as the refrigerating cycle utilized in the air conditioners such as air-conditioning indoors, the circulation side for making refrigerant is utilized To the circulation of reversion, so as to make in refrigerating mode (refrigeration) operating refrigerant via compressor, outdoor heat exchanger, expansion valve, And indoor heat exchanger and to compressor circulation, and warm up mode (heating) operating when make refrigerant via compressor, interior Heat exchanger, expansion valve and outdoor heat exchanger and to compressor circulation.As such ring for making the refrigerant in refrigerating cycle The flow channel switching valve (so-called four-way switching valve) of flow path reversion, extensive use, which has, to be sliding freely arranged in valve body The slidingtype switching valve of the valve member in portion.
In such slidingtype switching valve (such as four-way switching valve), since valve member is being pushed into the same of valve seat When slide, so in order to realize smoothly sliding action, propose the device (example that the sliding contact surface in valve member forms recess portion As referring to patent document 1,2).During the four-way switching valve documented by patent document 1 is used, in the sealing surface of spool (valve member) (sliding contact surface) and position adjacent with being open in glide direction are formed with linear slot.Recorded in patent document 2 Four-way valve in, the sliding surface of sliding valve core be formed with surround opening cricoid strip slot.In these structures, by The oil being formed in the recess portion acquisition fluid of sliding contact surface, slide valve member swimmingly.
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 2013-227994 bulletin
Patent document 2: Japanese Unexamined Patent Publication 52-143050
However, slot linear documented by patent document 1 is continuously until the ora terminalis of sealing surface, and opens wide and (do not formed Enclosure space).Therefore, although being easy to obtain oil in slot, acquired oil is easily flowed out.Also, in sealing surface from The orthogonal orthogonal direction of glide direction will opening be clipped between part do not form slot.The part is in sliding Shi Buyu valve seat side Opening portion overlapping and always with valve seat sliding contact, and along glide direction extend and contact area is larger, thus the company of generation The reason of repeating the movement (stick-slip, stick slip) slided and stopped continuously, and then easily becoming vibration, noise.
The cricoid strip slot as documented by patent document 2 is also formed in the always part with valve seat sliding contact, So being difficult to cause above-mentioned unfavorable condition.Also, due to forming enclosure space between the strip slot and valve seat, so oil is difficult With outflow.However, the peripheral part of opening of a part of strip slot in valve seat passes through in the sliding of sliding valve core, from And the peripheral part of strip slot enters the opening of valve seat and has a possibility that sliding valve core is scraped.
Therefore, for the damage of inhibit to rub caused unfavorable condition and valve member, consider only from orthogonal direction By the structure of the setting of the position between being clipped in recess portion that is open.However, due to such recess portion not superposition of end gap with valve seat side, institute To be difficult to obtain oil in the case where forming the shape of enclosure space between valve seat.On the other hand, in such as patent document 1 In the case where the recorded recess portion for being set as not formed enclosure space like that, acquired oil is easily flowed out.Therefore, in either case Under, there is a possibility that valve member can not be slided swimmingly.
Summary of the invention
The purpose of the present invention is to provide the slidingtypes that valve member can be made swimmingly to slide and be able to suppress damage to cut Change valve and refrigerating circulation system.
Slidingtype switching valve of the invention be a kind of valve body for having tubular, in a manner of linearly arranging in valve seat It is formed with the valve seat of multiple valve seat opening portions and is incorporated in above-mentioned valve body and the row along above-mentioned multiple valve seat opening portions The slidingtype switching valve of the bowl-shape valve member of column setting direction sliding, which is characterized in that above-mentioned valve member has and above-mentioned valve The sliding contact surface of seat surface sliding contact and the valve opening portion being open in a manner of making above-mentioned valve seat opening portion communicate with each other, on State sliding contact surface have with it is above-mentioned be arranged be located on the orthogonal orthogonal direction in direction above-mentioned valve opening portion two sides and Not with above-mentioned valve seat opening portion overlapping closing region and it is above-mentioned be arranged on direction it is adjacent with above-mentioned valve opening portion and The open area Chong Die with above-mentioned valve seat opening portion is formed in above-mentioned closing region in above-mentioned sliding contact surface along above-mentioned row Column setting direction extends and can be formed between above-mentioned valve seat the narrow recess portion of enclosure space, throughout above-mentioned open zone Domain is arranged to above-mentioned closing region and can form wide cut recess portion, the Yi Ji of enclosure space between above-mentioned valve seat The beam portion that the above-mentioned wide cut recess portion of two sides on above-mentioned orthogonal direction is separated from one another in above-mentioned open area, above-mentioned beam portion from The outer rim of above-mentioned valve opening portion continuously extends and abuts with above-mentioned valve seat along the above-mentioned direction that is arranged.
According to such present invention, since wide cut recess portion is arranged throughout open area to closing region, so in valve portion A part of wide cut recess portion is Chong Die with valve seat opening portion when the sliding of part, can obtain the oil in fluid.At this point, wide cut recess portion with Narrow recess portion is discontinuous, thus even if when always form enclosure space between narrow recess portion and valve seat in the case where, it is above-mentioned Recess portion track in the sliding of valve member is overlapped in closing region, to also be easy to supply wide cut recess portion to narrow recess portion Oil.Therefore, oil can be obtained being formed in the narrow recess portion for closing region, so as to slide valve member swimmingly.In addition, Continuously extend since direction is arranged from the outer rim edge of valve opening portion in the beam portion abutted with valve seat, so in valve member When sliding, the peripheral part of the wide cut recess portion in sliding contact surface is difficult to enter in valve seat opening portion, so as to inhibit valve member Damage.
At this point, in slidingtype switching valve of the invention, preferably, in above-mentioned sliding contact surface, by two above-mentioned width Central portion of the mode that width recess portion clips on above-mentioned orthogonal direction is formed with an above-mentioned beam portion.According to this structure, by It is equipped with beam portion in the central portion in orthogonal direction, so the peripheral part of the wide cut recess portion in sliding contact surface can be further suppressed Into in valve seat opening portion.
Also, in slidingtype switching valve of the invention, preferably, along it is above-mentioned be arranged direction configuration by above-mentioned The sets of recesses that narrow recess portion and above-mentioned wide cut recess portion are constituted, equipped with the cutting part that at least one is abutted with above-mentioned valve seat, from And the sets of recesses is arranged on direction discontinuously above-mentioned.According to this structure, due to being set relative to valve opening portion When the two sides that direction is arranged are to constitute the sliding in valve member respectively of two wide cut recess portions of same sets of recesses and mutually When different valve seat opening portions is overlapped, sets of recesses is discontinuous, so valve seat opening portion is each other via sets of recesses without being connected to.By This, is able to suppress valve seat opening portion of the fluid from high-tension side valve seat opening portion to low-pressure side and flows into.
In addition, in slidingtype switching valve of the invention, preferably, in above-mentioned open area, and across above-mentioned wide cut Recess portion and opposite side in above-mentioned valve opening portion, are formed with the end abutment region abutted with above-mentioned valve seat.According to such Structure is opened due to being formed with end abutment region in open area so wide cut recess portion is not spread on direction is arranged Put being integrally formed for region.Therefore, when the wide cut recess portion for the side being arranged in sliding on direction and valve seat opening portion weight When folded, in the other side, end abutment region is easy Chong Die with other valve seat opening portions.That is, the side being arranged on direction with And the wide cut recess portion of the other side be difficult to it is Chong Die with mutually different valve seat opening portion simultaneously, so as to inhibit fluid via arrangement Valve seat opening portion of the wide cut recess portion of the two sides of setting direction from high-tension side valve seat opening portion to low-pressure side flows into.
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;The expansion for being depressurized refrigerant expansion between above-mentioned First Heat Exchanger and above-mentioned second heat exchanger Mechanism;And slidingtype switching valve described in any of the above-described.According to such present invention, valve portion can be made as described above Part swimmingly slides, so as to inhibit such as stick-slip operate when abnormal sound, vibration.Further, it is possible to inhibit as described above The damage of valve member so as to inhibit fluid to leak out from the part damaged, and then is able to suppress the fortune of refrigerating circulation system The reduction of transfer efficient.
The effect of invention is as follows.
Slidingtype switching valve according to the present invention and refrigerating circulation system, are formed by the sliding contact surface in valve member There are narrow recess portion, wide cut recess portion and beam portion, valve member can be made swimmingly to slide and is able to suppress damage.
Detailed description of the invention
Fig. 1 is provided with the brief configuration figure of the refrigerating cycle of the slidingtype switching valve of an embodiment of the invention.
Fig. 2 is the cross-sectional view for showing above-mentioned slidingtype switching valve.
Fig. 3 is the cross-sectional view for showing above-mentioned slidingtype switching valve.
Fig. 4 is the top view for showing the sliding contact surface of valve member of above-mentioned slidingtype switching valve.
Fig. 5 is the top view for showing the above-mentioned sliding contact surface after sliding above-mentioned valve member.
Fig. 6 is the cross-sectional view for showing the major part of the above-mentioned slidingtype switching valve after sliding above-mentioned valve member.
Fig. 7 is the top view for showing the sliding contact surface of the valve member of slidingtype switching valve of first variation.
Fig. 8 is the top view for showing the sliding contact surface of the valve member of slidingtype switching valve of the second variation.
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 Mouth (opening portion), the port 11B~11D-(valve seat opening portion), 13-high-pressure side conduits (joint component), 19A-upper surface (valve Seat surface), 24-valve members, 25A-valve opening portion, 26A-sliding contact surface, 271,273,281,283-wide cut recess portions, 272, 282-narrow recess portions, 27,28-sets of recesses, 274,275-cutting parts, 291,292-beam portions, 293,294-end abutment areas Domain, A1-closing region, A2-open area.
Specific embodiment
Hereinafter, based on attached drawing, various embodiments of the present invention will be described.As shown in Figure 1, the four-way of present embodiment Switching valve (slidingtype switching valve) 10 is for example set on refrigerating cycle 1.Refrigerating cycle 1 is for the air conditioners such as room conditioning, tool It is standby: the compressor 2 that the refrigerant as fluid is compressed;The conduct functioned in refrigerating mode as condenser The outdoor heat exchanger 3 of one heat exchanger;The interior as the second heat exchanger functioned in refrigerating mode as evaporator is changed Hot device 4;Make refrigerant expansion to be depressurized as the swollen of expansion mechanism between outdoor heat exchanger 3 and indoor heat exchanger 4 Swollen valve 5;Four-way switching valve 10;And the pilot solenoid valve 6 of the flow path of switching control four-way switching valve 10, they pass through refrigerant It is piped and links.In addition, being not limited to expansion valve 5 as expansion mechanism, being also possible to capillary.
Refrigerant is constituted in the refrigerating cycle 1 refrigerating mode shown in Fig. 1 (refrigeration operation) according to compressor 2, four-way Switching valve 10, outdoor heat exchanger 3, expansion valve 5, indoor heat exchanger 4, four-way switching valve 10 and compressor 2 sequential flowing Refrigeration cycle.On the other hand, refrigerant is constituted in warm up mode (heating operation) according to compressor 2, four-way switching valve 10, room Interior heat exchanger 4, expansion valve 5, outdoor heat exchanger 3, four-way switching valve 10 and compressor 2 sequential flowing heating circulation.It should Heating circulation and the switching of refrigeration cycle are carried out by four-way switching valve 10 based on the switching action of pilot solenoid valve 6.
Also as shown in Figure 2 and Figure 3, the four-way switching valve 10 of embodiments of the present invention is configured to the valve master for having cylindric Body 11, be sliding freely arranged in the valve body 11 inside spool 12, be connected to the ejiction opening of compressor 2 be used as connector The high-pressure side conduit (D connector) 13 of component, the low-pressure side conduit (S connector) 14 being connected to the suction inlet of compressor 2 are changed with interior The indoor conduit (E connector) 15 that hot device 4 is connected to and the outside conduit (C connector) 16 being connected to outdoor heat exchanger 3.
Cylindric valve body 11 has the plug member 17,18 for blocking its axial ends portion and is fixed on valve body 11 Internal valve seat 19, and it is configured to the cylinder barrel being integrally closed.It is connected separately in plug member 17,18 and is connected to pilot solenoid valve 6 Conduit 17A, 18A.It is equipped in valve seat 19 respective for low-pressure side conduit 14, indoor conduit 15 and outside conduit 16 It is inserted into and constitutes aftermentioned first port 11C, second port 11D and flow out the opening of port 11B in front end.Valve seat 19 it is upper Surface 19A becomes the guide surface (valve seat) that sliding guidance is carried out to spool 12.
Multiple port 11A, 11B, 11C, the 11D being open in its side surface part 111 are formed in valve body 11.Make that is, being equipped with The inflow port 11A for the opening portion for flowing into refrigerant to the inside of valve body 11 to connect with high-pressure side conduit 13 and The upper surface of valve seat 19 is formed in the diametrically opposite side of the side surface part of valve body 11 111 as relative to port 11A is flowed into First port 11C, the second port 11D and outflow port 11B of the valve seat opening portion of 19A.It flows out port 11B and is set to valve body 11 It is approximately axially central, first port 11C along the axial direction and being adjacent to of valve body 11 be set to outflow port 11B side (Fig. 2's Left side), second port 11D along valve body 11 axial direction and be adjacent to be set to outflow port 11B the other side (right side of Fig. 2). That is, three port 11B~11D are set as linearly arranging.
By flowing out port 11B connection low-pressure side conduit 14, and in first port 11C junction chamber inner conduit 15, come So that first port 11C is constituted indoor side ports, and by second port 11D junction chamber outer conduit 16, come make this second Port 11D constitutes outdoor side ports.Solder brazing is fixed respectively for low-pressure side conduit 14, indoor conduit 15 and outside conduit 16 In outflow port 11B, first port 11C, the periphery second port 11D valve body 11 and valve seat 19.
Spool 12 is configured to have and the pair of right and left piston body 21 of the inner peripheral surface sliding contact of valve body 11,22, connection A pair of pistons body 21,22 simultaneously along the axially extending connecting member 23 of valve body 11 and is supported in the bowl-shape of connecting member 23 Valve member 24.Hyperbaric chamber R1 that the inner space of valve body 11 is divided between being formed in a pair of pistons body 21,22, it is formed in It the first operating room R2 between one piston body 21 and plug member 17 and is formed between another piston body 22 and plug member 18 Second operating room R3.
Connecting member 23 is made of sheet metal, and is formed to have: along valve body 11 it is axially extending be arranged for The link plate portion 23A parallel with the upper surface 19A of valve seat 19;Piston is fixed in a side end bending of link plate portion 23A The fixinig plate portion 23B of body 21;And the end side bending of link plate portion 23A is fixed on to the fixinig plate portion of piston body 22 23C.In link plate portion 23A be formed with keep valve member 24 retaining hole 23D and make refrigerant circulate two at through hole 23E.
Valve member 24 is plastic integral part, and is formed to have towards valve seat 19 and is open concavely Bowl portion 25 and the flange part 26 that extends outward from the opening edge in this bowl of portion 25.Bowl portion 25 is formed as having when looking down ellipse Circular dome shape, and it is inserted into the retaining hole 23D of connecting member 23.Being formed in the inside in bowl portion 25 makes to flow out port 11B is connected to without being connected to or making outflow port 11B to be connected to second port 11D with second port 11D with first port 11C Without being connected to such connected space R4 with first port 11C.
Have in the lower surface (face opposed with the upper surface 19A of valve seat 19) 260 of flange part 26 and is slided with upper surface 19A The sliding contact surface 26A of the contact and valve opening portion 25A being connected to the inside in bowl portion 25.The flange part 26 is configured at valve seat 19 Between connecting member 23.Moreover, sliding contact surface 26A because act on valve member 24 high pressure and low pressure pressure difference due to and valve The upper surface 19A of seat 19 is in close contact, so that the connected space R4 in bowl portion 25 is closed relative to valve seat 19.In addition, in port Tapered portion, but aftermentioned port 11B~11D and valve opening portion 25A are formed with around 11B~11D and valve opening portion 25A Size be not including tapered portion (along Z-direction extend part) size.
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 Figure 1 and Figure 2, piston body 22 be pressed and axial direction from spool 12 to valve body 11 (port 11B~ 11D's is arranged direction) side (left side of Fig. 1, Fig. 2) sliding, to be moved to first position.If also, via elder generation Conductive magnet valve 6 and conduit 17A import the high-pressure refrigerant sprayed from compressor 2 to the first operating room R2, then 21 quilt of piston body Pressing and spool 12 to the axial other side (right side of Fig. 1, Fig. 2) of valve body 11 slide, to be moved to the second position.
In the state that spool 12 is located at the second position, the bowl portion 25 of valve member 24 makes to flow out port 11B and second port 11D is connected to by connected space R4.Also, than first port 11C more lean on the other side since bowl portion 25 is located at, thus this Single 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 located at second The state set is to flow into port 11A the heating mould that port 11B is connected to second port 11D is connected to and flowed out with first port 11C Formula (heating operation).
In the warm up mode, imported to hyperbaric chamber R1 from compressor 2 via high-pressure side conduit 13 and inflow port 11A High-pressure refrigerant H after ejection, the high-pressure refrigerant H after the R1 of the hyperbaric chamber are led via first port 11C and indoor Pipe 15 and to indoor heat exchanger 4 supply.Also, from outdoor heat exchanger 3 via outside conduit 16 and second port 11D to bowl The connected space R4 in portion 25 imports low pressure refrigerant L, and the low pressure refrigerant L after connected space R4 is via outflow port 11B and low-pressure side conduit 14 and to 2 circulation of compressor.
On the other hand, in the state that spool 12 is located at first position, the bowl portion 25 of valve member 24 make flow out port 11B with First port 11C is connected to by connected space R4.Also, side is more leaned on than second 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 second port 11D.That is, spool 12 is located at The state of first position is to flow into port 11A to be connected to second port 11D and flow out port 11B and be connected to first port 11C Refrigerating mode (refrigeration operation).
It is described in detail based on the valve member 24 of Fig. 3, Fig. 4 to above four-way switching valve 10.Herein, by port 11B ~11D's is arranged direction as X-direction, using the extending direction of conduit 13~16 as Z-direction, and will be with X-direction and Z The orthogonal direction in direction (width direction of valve member 24) is used as Y-direction.
It is substantially rectangular that the sliding contact surface 26A of valve member 24 is formed as using Y-direction as length direction and corner is rounded Shape, valve opening portion 25A are formed as combining rectangle and semicircle and using X-direction as the oblong of length direction.Valve opening portion 25A Y-direction size and port 11B~11D diameter it is roughly equal.Therefore, in sliding contact surface 26A relative to valve opening portion Between port 11B~11D is clipped in by 25A and the part for being located at Y-direction two sides, and in the sliding of valve member 24 not with end Mouth 11B~11D overlapping.In this way, by the part for being located at Y-direction two sides relative to valve opening portion 25A in sliding contact surface 26A As closing region A1.Also, by the part except valve opening portion 25A and in addition to closing region A1 in sliding contact surface 26A (part adjacent with valve opening portion 25 in the X direction and Chong Die with port 11C, 11D in sliding) is used as open area A2.
The first wide cut recess portion 271, are formed in the side (upside in Fig. 4) in the Y direction of sliding contact surface 26A One narrow recess portion 272 and the second wide cut recess portion 273, and recess portion 271~273 is configured in X direction to constitute sets of recesses 27. Recess portion 271~273, which has, not to be contacted with upper surface 19A and can store depth as oil mass appropriate.Also, recess portion 271 ~273 are formed as close-shaped when looking down in a manner of surrounding predetermined region, and do not reach the end of sliding contact surface 26A Edge.That is, being formed with enclosure space between recess portion 271~273 and upper surface 19A.In addition, in Fig. 3 only visible recess portion 271~ The first narrow recess portion 272 in 273.
First wide cut recess portion 271 and the second wide cut recess portion 273 are arranged throughout region A1 is closed to open area A2, shape As having the generally trapezoidal of the parallel side of a pair extended in X direction, and between being clipped in valve opening portion 25A from X-direction. Edge 271A, 273A opposed with valve opening portion 25A in first wide cut recess portion 271 and the second wide cut recess portion 273 is opened along valve Oral area 25A and be formed as arc-shaped.
Narrow recess portion 272 is formed as the rectangle extended in X direction, and by the first wide cut recess portion 271 and the second wide cut Between narrow recess portion 272 is clipped in from X-direction by recess portion 273.It is between the first wide cut recess portion 271 and narrow recess portion 272 and narrow The cutting part 274,275 abutted with upper surface 19A is respectively equipped between width recess portion 272 and the second wide cut recess portion 273, thus recess portion 271~273 is mutually indepedent.That is, sets of recesses 27 is discontinuous in the X direction.In addition, width (the X-direction ruler of cutting part 274,275 It is very little) become and the wall of the Y-direction two sides of the first narrow recess portion 272 (closing the part abutted with upper surface 19A in the A1 of region) The identical degree of thickness.
The other side (downside in Fig. 4) in the Y direction of sliding contact surface 26A be formed with third wide cut recess portion 281, Second narrow recess portion 282 and the 4th wide cut recess portion 283, and recess portion 281~283 is configured in X direction to constitute sets of recesses 28.Recess portion 281~283 have respectively with the symmetrical shape of recess portion 271~273.
271 He of the first wide cut recess portion of the two sides of Y-direction will be set to by being formed in the open area A2 of sliding contact surface 26A Beam portion 291 that third wide cut recess portion 281 separates and will be set to Y-direction two sides the second wide cut recess portion 273 and the 4th it is wide The beam portion 292 that width recess portion 283 separates.That is, respectively in the X-direction two sides of valve opening portion 25A, to be clipped in by two wide cut recess portions Between mode central portion in the Y direction be formed with beam portion 291,292.
Beam portion 291,292 is formed as being continuously extended to sliding contact surface 26A from the outer rim of valve opening portion 25A in X direction Ora terminalis and abutted with upper surface 19A.That is, not forming recess portion in beam portion 291,292.In addition, width (the side Y of beam portion 291,292 To size) preferably 1/3 or more of the diameter of port 11B~11D.If the width of beam portion 291,292 is narrow, in valve member 24 When sliding, the peripheral part of the wide cut recess portion 271,273,281,283 in sliding contact surface 26A is easily accessible in port 11C, 11D.
In the open area A2 of sliding contact surface 26A, across wide cut recess portion 271,281 in the opposite of valve opening portion 25A Side is formed with end abutment region 293, and across wide cut recess portion 273,283 and the opposite side in valve opening portion 25A is formed with End abutment region 294.End abutment region 293,294 is the region abutted with upper surface 19A.That is, wide cut recess portion 271, 273,281,283 being integrally formed for open area A2 is not spread in the X direction.Also, beam portion 291 and end abutment region 293 Continuously, beam portion 292 and end abutment region 294 are continuous.
Herein, the relationship in each portion of sliding contact surface 26A and port 11B~11D is illustrated.In addition, in Fig. 4, Fig. 5 Port 11B~11D is shown with double dot dash line, but show do not include tapered portion and along the part that Z-direction extends.It is and above-mentioned in Fig. 4 First position it is corresponding, port 11B, 11C are impaled by valve opening portion 25A.At this point, wide cut recess portion 273,283 not with second port 11D overlapping.If sliding valve member 24 in X direction in a manner of becoming the above-mentioned second position from such state, such as Shown in Fig. 5, first port 11C is Chong Die with wide cut recess portion 271,281.At this point, second port 11D is supported with beam portion 292 and end The overlapping of region 294 is connect, but not Chong Die with wide cut recess portion 273,283.
If continuing the sliding of valve member 24, first port 11C is Chong Die with wide cut recess portion 271,281, and second Port 11D is Chong Die with wide cut recess portion 273,283.If further progress slide, first port 11C become not with wide cut recess portion 271, after 281 overlappings, spool 12 is located in the second position.
When like this sliding valve member 24, the peripheral part of port 11C, 11D in the 19A of upper surface are in open area A2 Upper process.The situation that the peripheral part (corner) 190 of second port 11D is passed through on open area A2 is shown in Fig. 6.At this point, beam Portion 292 continuously extends in X direction from the outer rim of valve opening portion 25A, so that peripheral part 190 is always connected to beam portion 292.Cause This, in the state that valve member 24 is pushed into upper surface 19A, limitation valve member 24 is close with surface 19A further up Mode deforms, so that the peripheral part of the wide cut recess portion 273,283 in sliding contact surface 26A (is extended in a manner of intersecting with X-direction Edge, such as edge 273A, with edge 273A be opposed to along Y-direction extend edge 273B) be difficult to enter in the 11D of port.
According to such present embodiment, there is effect below.That is, wide cut recess portion 271,273,281,283 is throughout opening Region A2 is arranged to closing region A1, thus in the sliding of valve member 24, one of wide cut recess portion 271,273,281,283 It is point Chong Die with port 11C, 11D, the oil in fluid (refrigerant) can be obtained.At this point, wide cut recess portion 271,273 and narrow recess portion 272 in the sliding of valve member 24 track close region A1 in be overlapped, thus be easy to narrow recess portion 272 supply wide cut recess portion 271,273 oil (also identical in recess portion 281~283).Therefore, can be formed in close region A1 narrow recess portion 272, 282 obtain oil, so as to slide valve member 24 swimmingly.In addition, the beam portion 291 abutted with the upper surface 19A of valve seat 19, 292 continuously extend in X direction from the outer rim of valve opening portion 25A, thus wide cut recess portion 271 in sliding contact surface 26A, 273, 281,283 peripheral part is difficult to enter in port 11C, 11D, is able to suppress the damage of valve member 24.
Also, since the central portion in the Y direction in sliding contact surface 26A is equipped with beam portion 291,292, so can be into One step inhibits the peripheral part of the wide cut recess portion 271,273,281,283 in sliding contact surface 26A to enter in port 11C, 11D.
Also, since sets of recesses 27 becomes discontinuous because of cutting part 274,275, so wide cut recess portion 271,273 is distinguished It is Chong Die with mutually different port 11C, 11D when valve member 24 is slided, at this point, port 11C, 11D are each other via sets of recesses 27 Without being connected to.Thereby, it is possible to inhibit port inflow of the refrigerant from high-tension side port to low-pressure side.
Also, due to being formed with end abutment region 293,294 in open area A2, and wide cut recess portion 271,273 is difficult With Chong Die with mutually different port 11C, 11D simultaneously, so being able to suppress refrigerant via the wide cut recess portion of the two sides of X-direction 271,273 port from high-tension side port to low-pressure side flows into.
Also, since valve member 24 as described above is set to refrigerating cycle 1, so valve member 24 can be made swimmingly to slide It is dynamic, so as to inhibit abnormal sound when operating such as stick-slip, vibration.Further, it is possible to inhibit the damage of valve member 24, so as to Enough refrigerant is inhibited to leak out from the part damaged, and then is able to suppress the reduction of the running efficiency of refrigerating cycle 1.
In addition, the present invention is not limited to above embodiment, the other structures including can be realized the purpose of the present invention Deng, and the present invention also includes deformation etc. as shown below.
For example, in the above-described embodiment, in the sets of recesses 27 for being formed in sliding contact surface 26A, the first wide cut recess portion 271, the first narrow recess portion 272 and the second wide cut recess portion 273 are set as separating because of cutting part 274,275 respectively, thus phase It is mutually separately formed, but is formed with narrow recess portion and wide cut recess portion in sliding contact surface 26A, their relationship is also possible to The relationship of following example.
In first variation shown in Fig. 7, two sides in sliding contact surface 26A and in the Y direction be formed with sets of recesses 30, 31.Sets of recesses 30 is made of two recess portions 301,302, and in X-direction due to cutting part 303 because being formed in X-direction central portion It is upper discontinuous.Recess portion 301 is by making to be formed in the narrow recess portion 301A for closing region A1 and throughout open area A2 to closing The recess portion that the wide cut recess portion 301B being arranged to region A1 is continuously formed.Recess portion 302 is also identical as recess portion 301, by narrow Recess portion 302A and wide cut recess portion 302B is constituted.Sets of recesses 31 is made of two recess portions 311,312, and recess portion 311,312 is respectively provided with With recess portion 301,302 identical shapes.Also, it is identical as above embodiment, sliding contact surface 26A be formed with beam portion 291, 292 and end abutment region 293,294.
In the second variation shown in Fig. 8, two sides in sliding contact surface 26A and in the Y direction be formed with recess portion 32, 33.Recess portion 32 is by making throughout open area A2 to the wide cut recess portion 321 being arranged with closing region A1, being formed in and close region What the narrow recess portion 322 of A1 and the wide cut recess portion 323 being arranged while region A1 is extremely closed throughout open area A2 were continuously formed One recess portion.Recess portion 321~323 is arranged successively in the X direction.The not formed cutting part of recess portion 32 becomes continuous in the X direction Shape.
In the second variation, it is formed with beam portion 291,292 identical with above embodiment in sliding contact surface 26A, But not formed end abutment region.That is, wide cut recess portion 321,323 is in the X direction throughout the substantially whole landform of open area A2 At.In addition, recess portion 33 has shape identical with recess portion 32.
Also, in the above-described embodiment, be set as in sliding contact surface 26A, with by the wide cut recess portion 271 of Y-direction two sides, The central portion of 281 modes being clipped in the middle in the Y direction is formed with a beam portion 291, but can also two sides in the Y direction wide cut it is recessed More than two beam portions are formed between portion.That is, other recess portions can also be formed between the wide cut recess portion of two sides in the Y direction. At this point, more than two beam portions are also configurable to deviate from the Y-direction central portion of sliding contact surface 26A.
In addition to this, optimal structure for carrying out the present invention, method etc., but this hair are disclosed in above record It is bright that it's not limited to that.That is, the present invention especially illustrates and illustrates the embodiment mainly determined, but as long as not departing from this hair The range of bright technical idea and purpose, embodiment for the above-described, those skilled in the art can be in shapes, material Matter, quantity apply various modifications in other detailed structures.Therefore, the record for defining shape, material etc. disclosed above is In order to become easy understanding of the invention and example is recorded, and the non-limiting present invention, the present invention include by above-mentioned shape, Part or all of restriction of the restrictions such as material remove after component title record.

Claims (6)

1. a kind of slidingtype switching valve, have the valve body of tubular, be formed in valve seat in a manner of linearly arranging it is multiple The valve seat of valve seat opening portion and it is incorporated in above-mentioned valve body and direction is arranged along above-mentioned multiple valve seat opening portions The bowl-shape valve member of sliding,
Above-mentioned slidingtype switching valve is characterized in that,
Above-mentioned valve member has and the sliding contact surface of above-mentioned valve seat sliding contact and so that above-mentioned valve seat opening portion connects each other The valve opening portion that logical mode is open,
Above-mentioned sliding contact surface have on the above-mentioned orthogonal direction that direction is arranged be located at above-mentioned valve opening portion two sides And not with above-mentioned valve seat opening portion overlapping closing region and it is above-mentioned be arranged on direction it is adjacent simultaneously with above-mentioned valve opening portion And the open area Chong Die with above-mentioned valve seat opening portion,
Above-mentioned sliding contact surface be formed in above-mentioned closing region along it is above-mentioned be arranged direction extend and can with Form the narrow recess portion of enclosure space between above-mentioned valve seat, be arranged to above-mentioned closing region throughout above-mentioned open area and The wide cut recess portion of enclosure space can be formed between above-mentioned valve seat and in above-mentioned open area by above-mentioned orthogonal side The above-mentioned wide cut recess portion of upward two sides beam portion separated from one another,
Above-mentioned beam portion continuously extends and supports with above-mentioned valve seat along the above-mentioned direction that is arranged from the outer rim of above-mentioned valve opening portion It connects.
2. slidingtype switching valve according to claim 1, which is characterized in that
Central portion shape in above-mentioned sliding contact surface, in a manner of being clipped by two above-mentioned wide cut recess portions on above-mentioned orthogonal direction Cheng Youyi above-mentioned beam portions.
3. slidingtype switching valve according to claim 1 or 2, which is characterized in that
Along the above-mentioned sets of recesses being made of above-mentioned narrow recess portion and above-mentioned wide cut recess portion that direction configuration is arranged, it is equipped with At least one cutting part abutted with above-mentioned valve seat, so that the sets of recesses is arranged on direction discontinuously above-mentioned.
4. slidingtype switching valve according to claim 1 or 2, which is characterized in that
In above-mentioned open area, and the opposite side across above-mentioned wide cut recess portion and in above-mentioned valve opening portion, be formed with it is above-mentioned The end abutment region that valve seat abuts.
5. slidingtype switching valve according to claim 3, which is characterized in that
In above-mentioned open area, and the opposite side across above-mentioned wide cut recess portion and in above-mentioned valve opening portion, be formed with it is above-mentioned The end abutment region that valve seat abuts.
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;It is changed in above-mentioned First Heat Exchanger with above-mentioned second The expansion mechanism for being depressurized refrigerant expansion between hot device;And slidingtype described in any one of Claims 1 to 5 Switching valve.
CN201810225211.3A 2017-04-06 2018-03-19 Slidingtype switching valve and refrigerating circulation system Active CN108692065B (en)

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JP2017-075878 2017-04-06

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JP4294683B2 (en) * 2006-12-19 2009-07-15 日立アプライアンス株式会社 Four-way switching valve and air conditioner using the same
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