CN105422912A - Four-way valve and air conditioning system - Google Patents
Four-way valve and air conditioning system Download PDFInfo
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- CN105422912A CN105422912A CN201511002613.XA CN201511002613A CN105422912A CN 105422912 A CN105422912 A CN 105422912A CN 201511002613 A CN201511002613 A CN 201511002613A CN 105422912 A CN105422912 A CN 105422912A
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- Prior art keywords
- valve
- pilot valve
- valve block
- block
- chute
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a four-way valve and an air-conditioning system. The four-way valve comprises a main valve and a pilot valve, wherein the pilot valve is provided with a pilot valve body, a pilot valve block and a valve position switching device; the valve position switching device is used for controlling the pilot valve block to switch between a first valve position and a second valve position; if the pilot valve block is at the first valve position, the main valve block is at a first working station; if the pilot valve block is at the second valve position, the main valve block is positioned at a second working station; the valve position switching device comprises an actuating device and a switching maintaining device; as the actuating device receives energy to act each time, the pilot valve block of the pilot valve can be switched once between the first valve position and the second valve position through the switching maintaining device; in addition, if the energy supply of the actuating device is cut off, the pilot valve block can be kept at the valve position which is switched when the actuating device acts for the last time through the switching maintaining device. With the adoption of the four-way valve, the energy for switching the valve positions and maintaining the valve positions of the four-way valve can be saved.
Description
Technical field
The present invention relates to air-conditioning equipment field, particularly a kind of four-way valve and air-conditioning system.
Background technique
Four-way valve may be used for the flow direction controlling refrigeration agent, makes heat pump type and Wind-cooling type air conditioner when carrying out heating with refrigerating operaton, realizes the switching of heat pump refrigeration, heat-production functions.But, in prior art, air-conditioning heat run under circulation mode time, need the power supply that pilot valve is continued, overcome the tension force of Compress Spring under the magnetic force that the pilot valve block of pilot valve produces at electromagnetic coil and slide, the valve port on guide valve blocks is impelled to switch, high pressure refrigerant is made to enter one end hydraulic pressure cavity of four-way valve main valve, low pressure refrigerant in the other end hydraulic pressure cavity is then discharged, thus set up the pressure difference at the main valve valve block two ends of main valve, due to the existence of pressure difference, main valve valve block is impelled to slide, outlet pipe is communicated with indoor heat exchanger connecting tube, sucking pipe communicates with outdoor heat exchanger connecting tube, formation heats circulation.And under the long-term severe cold operating mode such as severe winter, wanting air-conditioning is in and heats circulation mode and must power to the electromagnetic coil of pilot valve for a long time always, cause loss and the waste of the energy.
Summary of the invention
The object of the present invention is to provide a kind of four-way valve and air-conditioning system, be intended to save the energy controlling four-way valve valve position and switch.
First aspect present invention provides a kind of four-way valve, comprise main valve and the pilot valve for controlling described main valve events, described main valve comprises valve body of main valve and main valve valve block, described main valve valve block has the first working position and the second working position, described pilot valve has guide valve blocks, pilot valve block and valve position COMM communication, described pilot valve block has the first valve position and the second valve position, described valve position COMM communication switches between described first valve position and described second valve position for controlling described pilot valve block, when described pilot valve block is in the first valve position, described pilot valve controls described main valve valve block and is in the first working position, when described pilot valve block is in the second valve position, described pilot valve controls described main valve valve block and is in the second working position, the switching holding device that described valve position COMM communication comprises actuator and controls by described actuator, wherein, described actuator often accepts energy motion once, described switching holding device can make the pilot valve block of described pilot valve switch once between the first valve position and the second valve position, and cut off the valve position that described pilot valve block can be made to be held in the last action of described actuator switch to switching holding device described after the energy supply of described actuator.
Further, the slide block that described actuator comprises electromagnetic coil and drives by described electromagnetic coil, described pilot valve block is connected with described slide block.
Further, described actuator also comprises valve rod, and described pilot valve block is fixedly connected with by described valve rod with described slide block.
Further, described switching holding device comprises sliding sleeve, tooth post, runner and the first spring, described sliding sleeve, tooth post and runner are positioned at the axial first end of described pilot valve block, described first spring is positioned at axially second end of described pilot valve block and applies towards the pressure of its axial first end to described pilot valve block, described sliding sleeve is fixed on described guide valve blocks, the inwall of described sliding sleeve is provided with circumferentially and N number of first chute extended vertically, wherein N be more than or equal to 1 integer, described sliding sleeve has 2 × N number of guiding surface towards one end of described pilot valve block, described tooth post and described runner and described sliding sleeve are arranged in juxtaposition vertically coaxially and all can slide axially in described sliding sleeve, and the circumference of described tooth post has the first rib to make between described tooth post and described sliding sleeve without relatively rotating, described runner is between described tooth post and described pilot valve block, described tooth post has 2 × N number of driving inclined-plane towards one end of described runner, described runner has N number of second rib that can be slidably matched with N number of described first chute, the surface towards described tooth post of described second rib have all can be slidably matched with described driving inclined-plane and described guiding surface coordinate inclined-plane, described tooth post is servo-actuated with described valve block in the axial direction, and the action of described tooth post can make described drive surfaces drive described matching surface to arrive described guide surface, described second rib can guide in described first chute or guide to the end face towards described runner of described sliding sleeve by described guide surface.
Further, the inwall of described sliding sleeve is also provided with and interlocks N number of second chute be evenly arranged in circumference with described N number of first chute, described second chute extends vertically, and 2 of described sliding sleeve × N number of guiding surface and described N number of first chute and described N number of second chute one_to_one corresponding in the axial direction, the circumference of described tooth post has 2 × N number of first rib be slidably matched with N number of described first chute and N number of described second chute one_to_one corresponding, 2 × N number of driving inclined-plane of described tooth post and described first rib one_to_one corresponding in the axial direction, distance between the radial outer end of described second rib and the axis of described runner is greater than the distance of the bottom land of described second chute and the axis of described sliding sleeve, and described second rib can guide in described first chute or guide to the end face towards described runner of described sliding sleeve and relative with the opening of described second chute by described guide surface.
Further, described switching holding device also comprises the second spring, and described second spring is arranged between described pilot valve block and described runner.
Further, the elasticity coefficient of described second spring is greater than described first spring.
Further, the elasticity coefficient of described second spring is less than described first spring, and described switching holding device also comprises limit structure, and described limit structure is for limiting the minimum axial direction distance between described pilot valve block and described runner.
Further, described limit structure comprises the sleeve pipe be arranged between described pilot valve block and described runner, and described sleeve pipe periphery is located at by described second spring housing.
Further, described switching holding device also comprises the 3rd spring, and described 3rd spring is arranged at one end away from described pilot valve block of described tooth post and applies towards the pressure of described pilot valve block described tooth post.
Further, described switching holding device also comprises connecting rod, and described connecting rod connects described pilot valve block and described tooth post, and described runner is sheathed on described connecting rod movably.
Second aspect present invention provides a kind of air-conditioning system, comprises four-way valve, the four-way valve of described four-way valve according to any one of first aspect present invention.
Based on four-way valve provided by the invention and air-conditioning system, valve position COMM communication due to four-way valve comprises actuator and switches holding device, wherein, actuator often accepts energy motion once makes the pilot valve block of pilot valve switch once between the first valve position and the second valve position, and cut off the valve position that holding device makes pilot valve block be held in the last action of actuator to switch is switched afterwards to the energy supply of actuator, and main valve controls by pilot valve, link with pilot valve, thus, the every action of actuator once can make the main valve valve block of four-way valve switch once between the first working position and the second working position simultaneously, and the valve position cut off making main valve valve block be held in the last action of actuator after the energy supply of actuator to switch.Therefore, no matter four-way valve needs to switch to the first working position or the second working position, all without the need to continuing to provide energy for actuator, thus can save for the energy that four-way valve valve position switches and valve position keeps.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the broken section structural representation of four-way valve when refrigeration cycle of the embodiment of the present invention.
Fig. 2 is the A portion structure for amplifying schematic diagram of Fig. 1.
Fig. 3 is the broken section structural representation of four-way valve when refrigeration cycle of the embodiment of the present invention.
Fig. 4 is the B portion structure for amplifying schematic diagram of Fig. 3.
Fig. 5 switches the sliding sleeve of holding device, tooth post and runner cooperating structure schematic diagram in the valve position COMM communication of the pilot valve of the four-way valve of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.This device also can other different modes location (90-degree rotation or be in other orientation), and relatively describe space used here and make respective explanations.
As shown in Figures 1 to 4, the embodiment of the present invention provides a kind of four-way valve, comprise main valve 4 and the pilot valve 10 for control bound 4 action, main valve 4 comprises valve body of main valve 41 and main valve valve block 42, main valve valve block 42 has the first working position and the second working position, pilot valve 10 has guide valve blocks 11, pilot valve block 12 and valve position COMM communication, pilot valve block 12 has the first valve position and the second valve position, valve position COMM communication switches between the first valve position and the second valve position for controlling pilot valve block 12, when pilot valve block 12 is in the first valve position, pilot valve 10 control bound valve block 42 is in the first working position, when pilot valve block 12 is in the second valve position, pilot valve 10 control bound valve block 42 is in the second working position, it is characterized in that, the switching holding device 19 that valve position COMM communication comprises actuator and controls by actuator, wherein, actuator often accepts energy motion once, switching holding device 19 can make the guide valve blocks 12 of pilot valve 10 switch once between the first valve position and the second valve position, and cut off the valve position that holding device 19 can make pilot valve block 12 be held in the last action of actuator to switch is switched afterwards to the energy supply of actuator.
Valve position COMM communication due to four-way valve comprises actuator and switches holding device 19, wherein, actuator often accepts energy motion once makes the guide valve blocks 12 of pilot valve 10 switch once between the first valve position and the second valve position, and cut off the valve position that holding device makes pilot valve block 12 be held in the last action of actuator to switch is switched afterwards to the energy supply of actuator, and main valve 4 is by the control of pilot valve 10, can link with pilot valve 10, thus, the every action of actuator once can make the main valve valve block 42 of four-way valve switch once between the first working position and the second working position, and the valve position cut off making main valve valve block be held in the last action of actuator after the energy supply of actuator to switch.Therefore, no matter four-way valve needs to switch to the first working position or the second working position, all without the need to continuing to provide energy for actuator, thus can save for the energy that four-way valve valve position switches and valve position keeps.
Preferably, the slide block 13 that actuator comprises electromagnetic coil 14 and drives by electromagnetic coil 14, pilot valve block 12 is connected with slide block 13.Certainly, actuator of the present invention also can be hydraulic actuating, other activation manners such as manual.Preferably, switch holding device 19 and comprise sliding sleeve 191, tooth post 192, runner 193 and the first spring 194, sliding sleeve 191, tooth post 192 and runner 193 are positioned at the axial first end of pilot valve block 12, first spring 194 is positioned at axially second end of pilot valve block 12 and applies towards the pressure of its axial first end to pilot valve block 12, sliding sleeve 191 is fixed on guide valve blocks 11, the inwall of sliding sleeve 191 is provided with circumferentially and N number of first chute 1911 extended vertically, wherein N be more than or equal to 1 integer, sliding sleeve 191 has 2 × N number of guiding surface towards one end of pilot valve block 12, tooth post 192 and runner 193 are arranged in juxtaposition vertically coaxially with sliding sleeve 191 and all can slide axially in sliding sleeve 191, and the circumference of tooth post 192 has the first rib 1921 to make between tooth post 192 and sliding sleeve 191 without relatively rotating, runner 193 is between tooth post 192 and pilot valve block 12, tooth post 192 has 2 × N number of driving inclined-plane towards one end of runner 193, runner 193 has N number of second rib 1931 that can be slidably matched with N number of first chute 1911, the surface towards tooth post 192 of the second rib 1931 have with drive inclined-plane and guiding surface all can be slidably matched coordinate inclined-plane, tooth post 192 is servo-actuated with valve block 15 in the axial direction, and the action of tooth post 192 can make drive surfaces drive matching surface to arrive guide surface, second rib 1931 can guide in the first chute 1911 or guide to the end face towards runner 193 of sliding sleeve by guide surface.
More preferably, the inwall of sliding sleeve 191 is also provided with and interlocks N number of second chute be evenly arranged in circumference with N number of first chute 1911, second chute extends vertically, and 2 of sliding sleeve 191 × N number of guiding surface and the first chute 1911 and the second chute one_to_one corresponding in the axial direction, the circumference of tooth post 192 has 2 × N number of first rib 1921 be slidably matched with N number of first chute 1911 and N number of second chute one_to_one corresponding, 2 × N number of driving inclined-plane of tooth post 192 and the first rib 1921 one_to_one corresponding in the axial direction, distance between the radial outer end of the second rib 1931 and the axis of runner 193 is greater than the distance of the bottom land of the second chute and the axis of sliding sleeve 191, and the second rib 1931 can guide in the first chute 1911 or guide to the end face towards runner 193 of sliding sleeve 191 and relative with the opening of the second chute by guide surface.
Below in conjunction with Fig. 1 to Fig. 5, the embodiment of the present invention is specifically described.
As shown in figures 1 and 3, the four-way valve of this embodiment comprises main valve 4, pilot valve 10 and multiple connecting tube.Multiple connecting tube comprises pilot valve exhaust connection 1, outlet pipe 2, the left balance tube of pilot valve 3, indoor heat exchanger connecting tube 5, sucking pipe 6, outdoor heat exchanger connecting tube 7, pilot valve balance muffler 8, the right balance tube 9 of pilot valve.
Main valve 4 comprises valve body of main valve 41 and is arranged at the main valve valve block 42 of valve body of main valve 41 inside.Main valve valve block 42 can reciprocally be arranged along the axis of valve body of main valve 41.Valve body of main valve 41 is provided with four working holes, one of them first working hole 411 arranged separately is connected with outlet pipe 2, and other three working holes---the second working hole 412, the 3rd working hole 413 and the 4th working hole 414 are arranged side by side along the axis of valve body of main valve 41.Second working hole 412 is connected with indoor heat exchanger connecting tube 5, and the 3rd working hole 413 is connected with sucking pipe 6, and the 4th working hole 414 is connected with outdoor heat exchanger connecting tube 7.
Wherein, when four-way valve is connected to air-conditioning system, outlet pipe 2 is for being connected with the relief opening of compressor, and sucking pipe 6 is for being connected with the intakeport of compressor, indoor heat exchanger connecting tube 5 is for being connected with indoor heat exchanger, and outdoor heat exchanger connecting tube 7 is for being connected with outdoor heat exchanger.
Different according to the working position of main valve valve block 42 in valve body of main valve 41, main valve valve block 42 has the first working position and the second working position.At the first working position of main valve valve block 42, first working hole 411 of main valve 4 is communicated with the 4th working hole 414, second working hole 412 is communicated with the 3rd working hole 413, thus outlet pipe 2 is communicated with outdoor heat exchanger connecting tube 7, and sucking pipe 6 is communicated with indoor heat exchanger connecting tube 5, now air-conditioning system will be in refrigeration work pattern.At the second working position of main valve valve block 42, first working hole 411 of main valve 4 is communicated with the second working hole 412,3rd working hole 413 is communicated with the 4th working hole 414, thus outlet pipe 2 is communicated with indoor heat exchanger connecting tube 5, and sucking pipe 6 is communicated with outdoor heat exchanger connecting tube 7, now, the air-conditioning system at four-way valve place will be in and heat mode of operation.
As shown in Figure 1, when main valve valve block 42 is in its first working position, main valve valve block 42 is positioned at valve body of main valve 41 inside left; As shown in Figure 3, when main valve valve block 42 is in its second working position, main valve valve block 42 is positioned at valve body of main valve 41 inner right side.
The switching of main valve valve block 42 between its first working position and second working position is controlled by pilot valve 10, and namely main valve valve block 42 controls at the pilot valve 10 that moves through of valve body of main valve 41 inside.For this reason, valve body of main valve 41 is also provided with the first main valve be connected with pilot valve 10 respectively and controls mouth 415 and the second main valve controls mouth 416.In the present embodiment, the first main valve controls mouth 415 and the second main valve controls the axial two ends that mouth 416 lays respectively at main valve 4.As shown in figures 1 and 3, the first main valve controls the left end that mouth 415 is positioned at main valve valve block 42, and the second main valve controls the right-hand member that mouth 416 is positioned at main valve valve block 42.When the hydrodynamic pressure that the first main valve controls mouth 415 place is greater than the hydrodynamic pressure (pressure that main valve valve block 42 left end is subject to is greater than the pressure that main valve valve block 42 right-hand member is subject to) at the second main valve control mouth 416 place and overcomes the resistance of main valve valve block 41, main valve valve block 42 can move to right position from left dislocation, and namely main valve valve block 42 switches to the second working position from its first working position; Otherwise, when the hydrodynamic pressure controlling mouth 416 from the second main valve is greater than the hydrodynamic pressure (pressure that main valve valve block 41 right-hand member is subject to is greater than the pressure that main valve valve block 41 left end is subject to) at the first main valve control mouth 415 place and overcomes the resistance of main valve valve block 41, main valve valve block 42 can move to left position from right position, thus main valve valve block 42 switches to the first working position from its second working position.
As shown in Figures 1 to 4, pilot valve 10 comprises guide valve blocks 11, pilot valve block 12 and valve position COMM communication.It is inner that pilot valve block 12 is arranged at guide valve blocks 11, and pilot valve block 12 can along the reciprocally setting of the axis of guide valve blocks 11.Valve position COMM communication can control the to-and-fro motion of pilot valve block 12 at guide valve blocks 11, to make pilot valve block 12 switch between the first valve position and the second valve position, and then main valve valve block 42 can be made to switch between the first working position and the second working position.
Guide valve blocks 11 is provided with four valve ports, is respectively the first valve port 111, second valve port 112, the 3rd valve port 113 and the 4th valve port 114.First valve port 111 is arranged separately, and the second valve port 112, the 3rd valve port 113 and the 4th valve port 114 are arranged side by side along the axis of guide valve blocks 11.
As shown in figures 1 and 3, first valve port 111 of pilot valve 11 is connected with outlet pipe 2 by pilot valve exhaust connection 1, second valve port 112 controls mouth 415 by the left balance tube 3 of pilot valve with the first main valve of main valve 4 and is connected, 3rd valve port 113 is connected with sucking pipe 6 by pilot valve balance muffler 8, and the 4th valve port 114 controls mouth 416 by the right equality pipe 9 of pilot valve with the second main valve of main valve 4 and is connected.
Pilot valve 10 has the first valve position and the second valve position.In the first valve position of pilot valve 10, second valve port 112 is communicated with the 3rd valve port 113, first valve port 111 is communicated with the 4th valve port 114, thus the first main valve control mouth 415 of main valve 42 is communicated with sucking pipe 6 by the left balance tube 3 of pilot valve and pilot valve balance muffler 8, second main valve is controlled mouth 416 and is communicated with outlet pipe 2 with pilot valve exhaust connection 1 by the right balance tube 9 of pilot valve, even if the pressure that is subject to of main valve valve block 42 left end is greater than the pressure that main valve valve block 42 right-hand member is subject to, thus main valve valve block 42 can be made to switch to the second working position from its first working position or maintain its second working position.In the second valve position of pilot valve 10, first valve port 111 is communicated with the second valve port 112, 3rd valve port 113 is communicated with the 4th valve port 114, thus the first main valve control mouth 415 of main valve 42 is communicated with outlet pipe 2 with pilot valve exhaust connection 1 by the left balance tube 3 of pilot valve, second main valve is controlled mouth 416 and is communicated with sucking pipe 6 with pilot valve balance muffler 8 by the right balance tube 9 of pilot valve, even if the pressure that is subject to of main valve valve block 42 left end is less than the pressure that main valve valve block 42 right-hand member is subject to, thus main valve valve block 42 can be made to switch to the first working position from its second working position or maintain its first working position.
In the present embodiment, as depicted in figs. 1 and 2, when pilot valve block 12 is in left position, namely pilot valve block 12 is in the first valve position; As shown in Figure 3 and Figure 4, when pilot valve block 12 is in right position, namely pilot valve block 12 is in the first valve position.
As previously mentioned, the switching of pilot valve 10 between its first valve position and second valve position is controlled by valve position COMM communication.
As shown in Figures 1 to 4, valve position COMM communication comprises actuator and switches holding device 19.In the present embodiment, actuator comprises electromagnetic coil 14, the slide block 13 coordinated with electromagnetic coil and valve rod 15.
It is inner that slide block 13, valve rod 15 and switching holding device 19 are all arranged at valve body 12.Slide block 13 is connected with pilot valve block 12 by valve rod 15.In Fig. 1 to Fig. 4, slide block 13 and valve rod 15 are positioned at the right side of pilot valve block 12.Electromagnetic coil 14 is arranged on the periphery of guide valve blocks 11 right-hand member.
Wherein, electromagnetic coil 14 often once electric, actuator and switch holding device 19 acting in conjunction under, pilot valve block 12 all does the switching of position, and electromagnetic coil 14 electric after dead electricity again, pilot valve block 12 also will keep the corresponding valve position before electromagnetic coil 14 dead electricity.Specific explanations is as follows: if electromagnetic coil 14 obtains electric pilot valve block 12 be before in left position (the first valve position), electromagnetic coil 14 electric after, pilot valve block 12 will move to right position (switching to the second valve position from the first valve position) from left dislocation, and after electromagnetic coil 14 dead electricity, pilot valve block 12 maintains right position (maintaining the second valve position).Electromagnetic coil 14 again electric after, pilot valve block 12 will move to left position (switching to the first valve position from the second valve position) from right position, and after electromagnetic coil 14 again dead electricity, pilot valve block 12 will maintain left position (maintaining the first valve position).
As shown in Figures 1 to 5, in the present embodiment, switch holding device 19 and comprise sliding sleeve 191, tooth post 192, runner 193, second spring 195, the 3rd spring 196 and connecting rod 197.
Sliding sleeve 191, tooth post 192 and runner 193 are arranged at the axial first end (left end of Fig. 1 to Fig. 4) of pilot valve block 12, and the first spring 194 is arranged at axially second end (right-hand member of Fig. 1 to Fig. 4) of pilot valve block 12.In the present embodiment, slide block 13 is also positioned at the right-hand member of pilot valve block 12, first spring 194 is arranged between the right-hand member wall of slide block 13 and guide valve blocks 11, and the first spring 194 can be applied towards the power of its axial first end (being power left in the present embodiment) valve block 14 by slide block 13.Sliding sleeve 191, tooth post 192, runner 193 are coaxially arranged, and tooth post 192 and runner 193 are arranged side by side vertically and all can slide axially in sliding sleeve 191.Runner 193 is between tooth post 192 and pilot valve block 12.
The inside sidewalls of sliding sleeve 191 is circumferentially evenly equipped with N number of first chute 1911, and the inside sidewalls of sliding sleeve 191 is also circumferentially evenly equipped with N number of second chute simultaneously.N number of first chute 1911 and N number of second chute all extend and interlaced arrangement along the axis of sliding sleeve 191, and angle between each first chute 1911 and adjacent two the second chutes is equal, is namely evenly arranged in the circumferential.The radial depth of the first chute 1911 is greater than the radial depth of the second chute.In the present embodiment, the sidewall of the first chute 1911 through sliding sleeve 191 in the depth direction, the bottom land of the second chute and the side-wall outer side of sliding sleeve 191 have certain distance.
Right-hand member (one end relative with the pilot valve block 12) end face of sliding sleeve 191 arranges 2 × N number of sliding sleeve tooth 1912 extended vertically, and sliding sleeve tooth 1912 is arranged correspondingly with N number of first chute 1911 and N number of second chute 1912.Sliding sleeve tooth 1912 has from tooth top to tooth root along the axis of sliding sleeve 191 straight-sided flank arranged and the pitch face becoming angle from tooth top to tooth root with straight-sided flank, and this pitch face forms guiding surface.The straight-sided flank of every two adjacent sliding sleeve teeth 1912 is all by a pitch face interval.Each first chute 1911 and the second chute are arranged at corresponding pitch face near tooth location of root, and the first chute 1911 is connected with the straight-sided flank of a sidewall of the second chute with the adjacent sliding sleeve tooth 1912 of corresponding sliding sleeve tooth 1912 and is in same plane.
Tooth post 192 is reciprocally arranged in sliding sleeve 191 movably along the axis of sliding sleeve 191.The periphery of tooth post 192 be evenly equipped with 2 × N number of and N number of first chute 1911 and N number of second chute 1912 one to one the first rib 1921, first rib 1921 coordinate with the first corresponding chute 1911 and the second slide.Right-hand member (one end relative with the pilot valve block 12) end face of tooth post 192 is provided with 2 × N number of tooth post tooth 1922 correspondingly with the first rib 1921.Each tooth post tooth 1922 comprises two pitch faces from tooth top to tooth root, and two pitch faces intersect at tooth top place, and in two pitch faces, axially relative with the guiding surface of sliding sleeve tooth 191 pitch face is for drive inclined-plane.The driving inclined-plane of each first rib 1921 of tooth post 192 at least can slide into concordant with the guiding surface of the sliding sleeve tooth 1912 of sliding sleeve 191.
Runner 193 comprises along uniform and N number of second rib 1931 extended vertically of rotor periphery.The radial outer end of the second rib 1931 to the distance of the axis of runner 193 is greater than the distance of bottom land to the axis of sliding sleeve 191 of the second chute.When the sidewall of the non-through sliding sleeve of the first chute, the radial outer end of the second rib 1931 to the distance of the axis of runner 193 is less than the distance of the bottom land of the first chute 1911 and the axis of sliding sleeve 191.Runner 193 can slide axially in sliding sleeve 191.The side towards tooth post 192 of the second rib 1931 have for drive inclined-plane and guiding surface all can be slidably matched coordinate inclined-plane, when second rib 1931 contacts with tooth post tooth 1922, the cooperation inclined-plane of the second rib 1931 coordinates with the driving inclined-plane of tooth post tooth 1922, when the second rib 1931 contacts with the sliding sleeve tooth 1912 of sliding sleeve 191, inclined-plane is coordinated to coordinate with the guiding surface of sliding sleeve tooth 1912.
Switch holding device 19 and also comprise connecting rod 197, connecting rod 197 connects pilot valve block 12 and tooth post 192, interlock is kept for making the two, thus make tooth post 192 and slide block 13 keep linking, to make the action of slide block 13 drive the action of tooth post 192, also namely electromagnetic coil 14 is energized and once can causes tooth post 192 action once.Runner 193 is sleeved on connecting rod 197, and runner 193 can in the periphery translation of connecting rod 197 and rotation.
Second spring 195, between pilot valve block 12 and runner 193, can keep having certain distance between pilot valve block 12 and runner 193 while freely rotating for making runner 193.
In the present embodiment, the elasticity coefficient of the second spring 195 is greater than the first spring 194.
In other unshowned embodiment, the elasticity coefficient of the second spring 195 also can be less than the first spring 194, but runner 193 can stop guide valve blocks 12 to automatically reset after now cutting off energy supply in order to ensure actuator, switch holding device 19 and also comprise limit structure, limit structure is for limiting the minimum axial direction distance between pilot valve block 12 and runner 193.Wherein, limit structure comprises the sleeve pipe be arranged between pilot valve block 12 and runner 193, and the second spring 195 is sheathed on sleeve pipe periphery, and sleeve pipe can be set on connecting rod 197.
3rd spring 196 is arranged between the left end of guide valve blocks 11 and the bottom surface of tooth post 192.3rd spring 196 can make tooth post 192 and runner 193 be in abutment condition all the time, when electromagnetic coil 14 is energized, can ensure to switch holding device 19 quick acting, thus ensures the speed that the valve position of guide valve blocks 12 switches.
Below in conjunction with Fig. 1 to Fig. 4, corresponding description is done to the working principle of the COMM communication of the pilot valve 10 of the above embodiment of the present invention:
As depicted in figs. 1 and 2, now pilot valve block 12 is in the left position in the first valve position and Fig. 1 and Fig. 2, and the main valve valve block 42 of main valve 4 is in the first working position, and the air-conditioning system at four-way valve place is in refrigeration cycle pattern.Now electromagnetic coil 14 dead electricity, the first spring 16 is not compressed.
Now, the second rib 1931 that the first rib 1921 on tooth post 192 is arranged in the first chute 1911 of sliding sleeve 191 and the second chute, on runner 193 is arranged in the first chute 1911 of sliding sleeve 191.First chute 1911 and the second chute have fettered the rotation of tooth post 192, and the first chute 1911 has also fettered the rotation of runner 193 simultaneously, and tooth post 192 and runner 193 can only axially be slided.Due to the effect of the second spring 195, now tooth post 192 coordinate the cooperation inclined-plane of the second rib 1931 left end of part and the runner 193 that the driving inclined-plane of the tooth post tooth 1922 corresponding to the first rib 1921 overlaps with the first chute 1911 to abut with the first chute 1911.
When electromagnetic coil 14 electric time, slide block 13 overcomes action to the right after the resistance of the related elements such as the spring force of the first spring 194 and pilot valve block 12, and slide block 13 drives tooth post 192 to carry out axial motion to the right.The part abutted with the cooperation inclined-plane on runner 193 on the driving inclined-plane of tooth post 192 promotes to coordinate inclined-plane and runner 193 to carry out axial motion to the right simultaneously, when driving inclined-plane to move to concordant with guiding surface, runner 193 slides axially to the position of the straight-sided flank crossing the first chute 1911 and be connected with the cell wall of the first chute 1911, the circumference constraint of sliding sleeve 191 pairs of runners 193 disappears, runner 193 can rotate, so coordinate inclined-plane can move to along driving inclined-plane the part driving inclined-plane corresponding with the guiding surface of sliding sleeve 191, namely drive inclined-plane that cooperation inclined-plane has been pushed to the position that can coordinate with the guiding surface of sliding sleeve 191, inclined-plane is coordinated to continue to move along guiding surface, namely under the guiding of guiding surface, can rotate to a bit of distance of left movement the end moving to the sliding sleeve 191 relative with the second chute 1911 after an angle simultaneously, the end face of part and sliding sleeve 191 that the second rib 1931 exceeds the second chute degree of depth diametrically overlaps, so namely runner 193 stops after rollback slightly left after being pushed a segment distance to the right relative to the state of Fig. 1 and Fig. 2 again, rollback distance is the height of sliding sleeve tooth 1912, no longer return afterwards, thus pilot valve block 12 is in right position i.e. the second valve position under the effect of runner 193.
Now can make electromagnetic coil 14 dead electricity, even if electromagnetic coil 14 dead electricity, because of the backstop action of runner 193, pilot valve block 12 also can not return to left position from its right position, thus pilot valve block 12 switches to the second valve position from the first valve position and can maintain the second valve position, pilot valve 10 becomes the state shown in Fig. 3 to Fig. 4 from the state shown in Fig. 1 and Fig. 2.Correspondingly, the main valve valve block 42 of main valve 4 switches to the second working position from the first working position, and is held in the second working position.Therefore, the four-way valve of the present embodiment, when not to pilot valve 10 continued power, also can keep air-conditioning system to be in for a long time and heat circulation mode.
As shown in Figure 3 and Figure 4, now pilot valve block 12 is in right position i.e. the second valve position, and the main valve valve block 42 of main valve 4 is corresponding is in the second working position, and the air-conditioning system at four-way valve place is in and heats circulation mode.
When electromagnetic coil 14 again electric, slide block 13 is driven to move right, slide block 13 drives tooth post 192 to move right a bit of distance when the driving inclined-plane on tooth post 192 is connected with the guiding surface of corresponding sliding sleeve tooth 1912, move to right by the runner 193 driving inclined-plane to drive thereupon, and the cooperation inclined-plane of runner 193 along with after driving inclined-plane to move to the position coordinated with guiding surface namely along guiding surface to left movement while rotate the opening end of angle to the first chute 1911 again, now, electromagnetic coil 14 dead electricity, then promotion slide block 13 is moved to the left by the first spring 194, tooth post 192 is moved to the left with slide block 13, lose the backstop of tooth post 192, second rib 1931 of runner 193 can slide along the first chute 1911, and get back to the state shown in Fig. 1 to Fig. 2, pilot valve block 12 gets back to left position, namely the first valve position is switched to from the second valve position.Thus main valve valve block 42 switches to the first working position from the second working position.
In valve position handoff procedure, tooth post 192 is to-and-fro motion vertically under the restriction of the first chute 1911 and the second chute all the time, and runner 192 then often switches and once rotates 180/N degree in the same direction.
Known according to above description, the four-way valve of the present embodiment is installed on after in air-conditioning system, air-conditioning no matter is made to be in refrigeration cycle pattern for a long time or to heat circulation mode, all without the need to powering to electromagnetic coil 14 for a long time, thus the energy of the valve position of the pilot valve block 12 for switching pilot valve 10 can be saved, also namely save the energy of the working position of the main valve valve block 42 for switching main valve 4.And, the problem causing because powering for a long time controlling to lose efficacy can also be avoided.In addition, in existing four-way valve, increase the valve position handover operation that the parts such as sliding sleeve, tooth post and runner can realize without the need to continued power, cost is lower, easy to process.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope of request of the present invention protection.
Claims (12)
1. a four-way valve, comprise main valve (4) and the pilot valve (10) for controlling described main valve (4) action, described main valve (4) comprises valve body of main valve (41) and main valve valve block (42), described main valve valve block (42) has the first working position and the second working position, described pilot valve (10) has guide valve blocks (11), pilot valve block (12) and valve position COMM communication, described pilot valve block (12) has the first valve position and the second valve position, described valve position COMM communication switches between described first valve position and described second valve position for controlling described pilot valve block (12), when described pilot valve block (12) is in the first valve position, described pilot valve (10) controls described main valve valve block (42) and is in the first working position, when described pilot valve block (12) is in the second valve position, described pilot valve (10) controls described main valve valve block (42) and is in the second working position, it is characterized in that, the switching holding device (19) that described valve position COMM communication comprises actuator and controls by described actuator, wherein, described actuator often accepts energy motion once, described switching holding device (19) can make the pilot valve block (12) of described pilot valve (10) switch once between the first valve position and the second valve position, and cut off the valve position that described pilot valve block (12) can be made to be held in the last action of described actuator switch to switching holding device (19) described after the energy supply of described actuator.
2. four-way valve according to claim 1, it is characterized in that, the slide block (13) that described actuator comprises electromagnetic coil (14) and drives by described electromagnetic coil (14), described pilot valve block (12) is connected with described slide block (13).
3. four-way valve according to claim 2, is characterized in that, described actuator also comprises valve rod (15), and described pilot valve block (12) is fixedly connected with by described valve rod (15) with described slide block (13).
4. four-way valve according to claim 1, it is characterized in that, described switching holding device (19) comprises sliding sleeve (191), tooth post (192), runner (193) and the first spring (194), described sliding sleeve (191), tooth post (192) and runner (193) are positioned at the axial first end of described pilot valve block (12), described first spring (194) is positioned at axially second end of described pilot valve block (12) and applies towards the pressure of its axial first end to described pilot valve block (12), described sliding sleeve (191) is fixed on described guide valve blocks (11), the inwall of described sliding sleeve (191) is provided with circumferentially and N number of first chute (1911) extended vertically, wherein N be more than or equal to 1 integer, described sliding sleeve (191) has 2 × N number of guiding surface towards one end of described pilot valve block (12), described tooth post (192) and described runner (193) are arranged in juxtaposition vertically coaxially with described sliding sleeve (191) and all can slide axially in described sliding sleeve (191), and the circumference of described tooth post (192) has the first rib (1921) to make between described tooth post (192) and described sliding sleeve (191) without relatively rotating, described runner (193) is positioned between described tooth post (192) and described pilot valve block (12), described tooth post (192) has 2 × N number of driving inclined-plane towards one end of described runner (193), described runner (193) has N number of second rib (1931) that can be slidably matched with N number of described first chute (1911), the surface towards described tooth post (192) of described second rib (1931) have all can be slidably matched with described driving inclined-plane and described guiding surface coordinate inclined-plane, described tooth post (192) is servo-actuated with described valve block (15) in the axial direction, and the action of described tooth post (192) can make described drive surfaces drive described matching surface to arrive described guide surface, described second rib (1931) can guide in described first chute (1911) or guide to the end face towards described runner (193) of described sliding sleeve (191) by described guide surface.
5. four-way valve according to claim 4, it is characterized in that, the inwall of described sliding sleeve (191) is also provided with and interlocks N number of second chute be evenly arranged in circumference with described N number of first chute (1911), described second chute extends vertically, and 2 of described sliding sleeve (191) × N number of guiding surface and described N number of first chute (1911) and described N number of second chute one_to_one corresponding in the axial direction, the circumference of described tooth post (192) has 2 × N number of first rib (1921) be slidably matched with N number of described first chute (1911) and N number of described second chute one_to_one corresponding, 2 × N number of driving inclined-plane of described tooth post (192) and described first rib (1921) one_to_one corresponding in the axial direction, distance between the radial outer end of described second rib (1931) and the axis of described runner (193) is greater than the distance of the bottom land of described second chute and the axis of described sliding sleeve (191), and described second rib (1931) can guide in described first chute (1911) or guide to the end face towards described runner (193) of described sliding sleeve (191) and relative with the opening of described second chute by described guide surface.
6. four-way valve according to claim 4, it is characterized in that, described switching holding device (19) also comprises the second spring (195), and described second spring (195) is arranged between described pilot valve block (12) and described runner (193).
7. four-way valve according to claim 6, is characterized in that, the elasticity coefficient of described second spring (195) is greater than described first spring (194).
8. four-way valve according to claim 6, it is characterized in that, the elasticity coefficient of described second spring (195) is less than described first spring (194), described switching holding device (19) also comprises limit structure, and described limit structure is for limiting the minimum axial direction distance between described pilot valve block (12) and described runner (193).
9. four-way valve according to claim 8, it is characterized in that, described limit structure comprises the sleeve pipe be arranged between described pilot valve block (12) and described runner (193), and described second spring (195) is sheathed on described sleeve pipe periphery.
10. four-way valve according to claim 4, it is characterized in that, described switching holding device also comprises the 3rd spring (196), and described 3rd spring (196) is arranged at one end away from described pilot valve block (12) of described tooth post (192) and applies towards the pressure of described pilot valve block (12) described tooth post (192).
11. four-way valves according to claim 4, it is characterized in that, described switching holding device also comprises connecting rod (197), described connecting rod (197) connects described pilot valve block (12) and described tooth post (192), and described runner (193) is sheathed on described connecting rod (197) movably.
12. 1 kinds of air-conditioning systems, comprise four-way valve, it is characterized in that, described four-way valve is the four-way valve according to any one of claim 1 to 11.
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| CN201511002613.XA CN105422912B (en) | 2015-12-25 | 2015-12-25 | Four-way valve and air-conditioning system |
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| CN201511002613.XA CN105422912B (en) | 2015-12-25 | 2015-12-25 | Four-way valve and air-conditioning system |
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| CN105422912B CN105422912B (en) | 2018-04-06 |
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| CN105422912B (en) | 2018-04-06 |
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