CN115325210A - Three-way valve - Google Patents

Three-way valve Download PDF

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Publication number
CN115325210A
CN115325210A CN202110508585.8A CN202110508585A CN115325210A CN 115325210 A CN115325210 A CN 115325210A CN 202110508585 A CN202110508585 A CN 202110508585A CN 115325210 A CN115325210 A CN 115325210A
Authority
CN
China
Prior art keywords
valve
way
cover
core
communicated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110508585.8A
Other languages
Chinese (zh)
Inventor
袁俊
金国权
李潘
裘慧祥
周水根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Hongsen Machinery Co ltd
Original Assignee
Zhejiang Hongsen Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Hongsen Machinery Co ltd filed Critical Zhejiang Hongsen Machinery Co ltd
Priority to CN202110508585.8A priority Critical patent/CN115325210A/en
Publication of CN115325210A publication Critical patent/CN115325210A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • 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
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston

Abstract

The invention provides a three-way valve, which is characterized in that a valve core and a piston are assembled in an inner cavity formed by a valve cover and a valve seat, the valve cover and the valve seat are fixedly connected to form an integral assembly, the valve cover and one end of the valve body are detachably connected, when the three-way valve is not closed tightly due to surplus materials in a system, the energy efficiency of the system is influenced, and when the three-way valve is maintained, the replaceable assembly can be replaced only by disassembling the integral assembly formed by fixedly connecting the valve cover and the valve seat, the maintenance of the three-way valve is completed, and the maintenance operation is convenient.

Description

Three-way valve
Technical Field
The invention relates to the field of air conditioner defrosting, in particular to a three-way valve for reversing.
Background
In air conditioning systems, defrosting is typically accomplished by reversing the admission of discharge air from the compressor using a three-way valve. The reference CN211398657U discloses a three-way valve, specially designed for thermal defrosting, which avoids complicated external pipelines by interaction of internal chambers; when the coil is de-energized, the valve is in the normal flow direction, sucking air from the evaporator to the compressor, and when the coil is energized, exhaust air from the compressor passes through the piston to open the lower valve flap gasket, so that hot air enters the evaporator to defrost.
However, when the energy efficiency of the system is affected due to the fact that the three-way valve is not closed strictly due to the surplus in the system, the three-way valve needs to be completely disassembled for maintenance when being maintained, and the efficiency is low.
Disclosure of Invention
The invention aims to provide a three-way valve, which can be used for conveniently replacing a valve core or a valve seat with a fault and facilitating the maintenance of the three-way valve.
In order to solve the above technical problem, as an aspect of the present invention, a three-way valve is provided, which includes a valve body, a valve seat, a valve core, a valve cover, an electromagnetic pilot valve, and a piston, wherein:
the valve body is provided with a valve cavity and three connecting pipes communicated with the system;
the valve seat is roughly cylindrical, is provided with two ports corresponding to the valve body, and is additionally provided with two valve ports which are matched with the valve core to open and close the channel;
the piston is fixedly connected with the valve core and drives the valve core to open and close the channel under the control of the electromagnetic pilot valve;
the electromagnetic pilot valve is characterized in that the valve cover is fixedly connected with the electromagnetic pilot valve, the valve cover is fixedly connected with the valve seat, and the valve cover is detachably connected with one end of the valve body.
Furthermore, the three-way valve further comprises a return spring, and the return spring compresses the lower end of the piston.
Furthermore, the three-way valve also comprises a high-pressure conduit and a low-pressure conduit, and the high-pressure conduit and the low-pressure conduit are arranged at one end of the valve body.
Further, the valve cover and the valve body are connected through screws or bolts.
Furthermore, a flange is welded at the upper end of the valve body, and the valve cover is connected with the flange through screws or bolts.
Furthermore, the flange also comprises a high-pressure hole and a low-pressure hole, and a sealing gasket surrounding the high-pressure hole and the low-pressure hole is arranged between the valve cover and the flange.
Furthermore, the electromagnetic pilot valve is a three-way control valve, a first interface of the electromagnetic pilot valve is communicated with the high-pressure conduit, a second interface of the electromagnetic pilot valve is communicated with the low-pressure conduit, and a third interface of the electromagnetic pilot valve is communicated with the cavity at the upper end of the piston.
Further, the valve cover and the valve seat are connected through threads, and the piston slides in the valve cover or the valve seat.
Further, the root of the thread of the valve cover is provided with a sealing ring mounting groove.
Furthermore, the electromagnetic pilot valve is a three-way control valve and comprises a steel ball valve core for sealing, a movable iron core, a spring, a static iron core, a pilot valve body, a sleeve, a lower valve seat which is matched with the steel ball valve core to open and close a first interface, and an upper valve seat which is matched with the steel ball valve core to open and close a second interface, wherein a cavity where the steel ball valve core is arranged is communicated with a third interface; the first interface is communicated with the high-pressure hole so as to be communicated with the high-pressure conduit, the second interface is communicated with the low-pressure hole so as to be communicated with the low-pressure conduit, and the third interface is communicated with the cavity at the upper end of the piston.
The three-way valve is assembled in an inner cavity formed by the valve cover and the valve seat through the valve core and the piston, the valve cover and the valve seat are fixedly connected to form an integral assembly, the valve cover is detachably connected with one end of the valve body, when the energy efficiency of the system is affected due to the fact that redundant materials in the system cause the three-way valve to be closed untight, and the three-way valve is maintained, only an integral replaceable assembly formed by fixedly connecting the valve cover and the valve seat needs to be disassembled, the replaceable assembly can be replaced, the maintenance of the three-way valve is completed, and the maintenance operation is convenient.
Drawings
FIG. 1 is a schematic diagram showing a cross-sectional cut-away power off state of a three-way valve in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram showing a cross-sectional view of a three-way valve of an embodiment of the present invention in an energized state;
FIG. 3 shows a schematic left view of a three-way valve of an embodiment of the invention;
FIG. 4 shows a schematic of an electromagnetic pilot valve of a three-way valve of an embodiment of the present invention.
Reference numbers in the figures: the valve comprises a valve body 1, a first connecting pipe 11, a second connecting pipe 12, a third connecting pipe 13, a low-pressure conduit 14, a high-pressure conduit 15, a flange 16, a high-pressure hole 162, a low-pressure hole 161, an adapter 17, a bolt 2, a valve cover and valve seat integrated assembly 20, a valve seat 21, an interface 211, an interface 212, a valve port 213, a valve port 214, a valve cover 22, a first interface 222, a second interface 223, a third interface 221, a piston 23, a nut 24, a return spring 25, a valve core 26, a lower section 216, an upper section 262, a plastic sealing ring 263, a plastic sealing ring 264, a pressing ring 265, a nut 266, a rubber sealing ring 27, a rubber sealing ring 28, a sealing gasket 3, an electromagnetic pilot valve 30, a lower valve seat 31, a steel ball valve core 32, an upper valve seat 33, a movable iron core 34, a spring 35, a static iron core 36, a valve body 37 and a sleeve 38.
Detailed Description
The invention is further described with reference to the following figures and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings, and are used merely for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention.
According to the embodiment of the present invention, referring to fig. 1 to 4, the three-way valve mainly includes a valve body 1, a valve seat 21, a valve cover 22, a valve core 26, an electromagnetic pilot valve 30, a piston 23, a nut 24, and a return spring 25.
The valve body 1 is provided with a valve cavity, a first connecting pipe 11, a second connecting pipe 12 and a third connecting pipe 13, the first connecting pipe 11 is connected with an exhaust port of a compressor, the second connecting pipe 12 is connected with an evaporator, and the third connecting pipe 13 is connected with an air return and gas collecting pipe; the first connecting pipe 11 and the valve body are directly welded through the adapter 17, the upper end of the valve body 11 is welded with the flange 16, the flange is provided with a high-pressure hole 162 and a low-pressure hole 161, the high-pressure conduit 15 is connected with the first connecting pipe 11 and the high-pressure hole 162, and the low-pressure conduit 14 is connected with the third connecting pipe 13 and the low-pressure hole 161. The high pressure conduit 15 and the low pressure conduit 14 are both at one end of the valve body and are not directly connected to the valve cover 22, so that the high pressure conduit 15 and the low pressure conduit 14 do not interfere with the removal of the valve cover. The valve body is made of stainless steel or brass.
The valve seat 21 is substantially cylindrical, and has two ports 211, 212 corresponding to the second connecting pipe 12 and the third connecting pipe 13 on the valve body, and two ports 213, 214, wherein the two ports 213, 214 cooperate with the valve core 26 to open and close the port channels, and the rubber sealing rings 27, 28 ensure the sealing between the valve body and the valve seat. The valve core 26 comprises an upper section 262 and a lower section 216, wherein the upper section 262 and the lower section 216 are connected through threads, and a plastic sealing ring 263 is assembled at the joint; lower section 216 is fitted with a plastic sealing ring 264, a pressure ring 265, and a nut 266. The piston 23 is fixedly connected with the valve core upper section 262 through a connecting nut 24, one end of a return spring 25 compresses the lower end of the piston 23, and the other end of the return spring 25 is supported at a step of the valve seat inner cavity. The piston 23 is disposed within the interior of the cap 22 and slides within the interior of the cap 22, although it could be designed to slide within the valve seat. The lower end of the valve cover 22 is fixedly connected with the valve seat 21 through threads, and parts such as the valve core 26 and the piston 23 are arranged in an inner cavity formed by the valve cover and the valve seat to form the integral assembly 20 of the valve cover and the valve seat. The flange 16 and the valve body 1 are welded into a whole, a sealing gasket 3 is arranged between the valve cover 22 and the flange 16 and surrounds the high-pressure hole 162 and the low-pressure hole 161, so that the external leakage between the valve cover and the flange is prevented, the external leakage between the high-pressure hole 162 and the low-pressure hole 161 corresponding to the two interfaces of the pilot valve and the flange is prevented, and the detachable connection is realized through bolts 2. When the energy efficiency of the system is affected due to the fact that surplus objects in the system cause the three-way valve to be closed untight, when the three-way valve is maintained, only the integral assembly formed by fixedly connecting the valve cover and the valve seat is disassembled, the assembly can be replaced, and the maintenance of the three-way valve is completed.
In the embodiment, the flange 16 and the valve body 1 are welded into a whole, and the flange and the valve body can be directly and integrally cast; in addition, the sealing gasket 3 is arranged between the valve cover 22 and the flange 16, and a sealing ring installation groove is arranged at the root of the thread of the threaded connection between the valve cover and the valve seat to install a sealing ring, so that the outer sealing between the valve cover and the valve body is realized.
The electromagnetic pilot valve 30 is a three-way control valve, and mainly comprises a steel ball valve core 32 for sealing, a movable iron core 34, a spring 35, a static iron core 36, a pilot valve body 37, a sleeve 38, a lower valve seat 31 which is matched with the steel ball valve core 32 to open and close a first interface 222, an upper valve seat 33 which is matched with the steel ball valve core 32 to open and close a second interface 223, and a coil (not shown), wherein a cavity where the steel ball valve core 32 is located is communicated with a third interface 221; the first port 222 communicates with the high pressure hole 162 to communicate with the high pressure conduit 15, the second port 223 communicates with the low pressure hole 161 to communicate with the low pressure conduit 14, and the third port 221 communicates with the upper end chamber of the piston 23. The electromagnetic pilot valve 30 is connected with the upper end of the valve cover 22 through a pilot valve body 37 through threads. The upper valve seat 33 and the lower valve seat 31 are both fixedly connected with the upper end of the valve cover 22, and of course, the upper valve seat 33 and the lower valve seat 31 are both fixedly connected with the valve body 37 which can also be a pilot valve, thereby forming an integral pilot valve and being convenient for controlling the stroke of the valve core.
In operation, in a cooling state, referring to fig. 1, the electromagnetic pilot valve steel ball valve element 32 closes the valve port of the lower valve seat 31 under the action of the force of the spring 35, the valve port of the upper valve seat 33 is in an open state, the second port 223 is communicated with the third port 221, the valve port 213 is in an open state, the valve port 214 is in a closed state, and the second connecting pipe 12 is communicated with the third connecting pipe 13. After the electromagnetic pilot valve is powered on, the system is in a defrosting state, referring to fig. 2, the movable iron core 34 in the electromagnetic pilot valve is attracted, the steel ball valve core 32 closes the valve port of the upper valve seat 33 under the action of high-pressure gas, the valve port of the lower valve seat 31 is in an open state, the first port 222 is communicated with the third port 221, under the action of high-pressure gas, the piston 23 drives the valve core 26 to move downwards, the valve port 213 is in a closed state, the valve port 214 is in an open state, and the second connecting pipe 12 is communicated with the first connecting pipe 11. Similarly, after the electromagnetic pilot valve is powered off, the system is restored to a refrigerating state, and the system drives the valve core to open and close the corresponding channel under the control of the electromagnetic pilot valve.
The above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The three-way valve comprises a valve body, a valve seat, a valve core, a valve cover, an electromagnetic pilot valve and a piston, wherein:
the valve body is provided with a valve cavity and three connecting pipes communicated with the system;
the valve seat is roughly cylindrical, is provided with two ports corresponding to the valve body, and is additionally provided with two valve ports which are matched with the valve core to open and close the channel;
the piston is fixedly connected with the valve core and drives the valve core to open and close the channel under the control of the electromagnetic pilot valve;
the electromagnetic pilot valve is characterized in that the valve cover is fixedly connected with the electromagnetic pilot valve, the valve cover is fixedly connected with the valve seat, and the valve cover is detachably connected with one end of the valve body.
2. A three-way valve according to claim 1, characterized in that it further comprises a return spring, which presses against the lower end of the piston.
3. A three-way valve according to claim 1, characterized in that the three-way valve further comprises a high pressure conduit and a low pressure conduit, both at one end of the valve body.
4. A three-way valve according to any one of claims 1-3, characterized in that the valve cover and the valve body are connected by means of screws or bolts.
5. A three-way valve according to any one of claims 1-3, characterized in that a flange is welded to the upper end of the valve body, and the valve cover and the flange are connected by means of screws or bolts.
6. A three-way valve according to any one of claims 1-3, characterized in that the electromagnetic pilot valve is a three-way control valve, the first port communicates with the high-pressure conduit, the second port communicates with the low-pressure conduit, and the third port communicates with the chamber at the upper end of the piston.
7. A three-way valve according to any one of claims 1-3, characterized in that the valve cover and the valve seat are connected by means of a screw thread, and the piston slides in the valve cover or the valve seat.
8. A three-way valve according to claim 7, characterized in that the thread root of the bonnet is provided with a gasket mounting groove.
9. A three-way valve according to claim 5, characterized in that the flange further comprises a high-pressure port and a low-pressure port, and that a sealing gasket is arranged between the valve cover and the flange, surrounding the high-pressure port and the low-pressure port.
10. The three-way valve according to claim 6, wherein the electromagnetic pilot valve is a three-way control valve comprising a steel ball valve core for sealing, a movable iron core, a spring, a static iron core, a pilot valve body, a sleeve, a lower valve seat which is matched with the steel ball valve core to open and close a first interface, and an upper valve seat which is matched with the steel ball valve core to open and close a second interface, and the cavity where the steel ball valve core is located is communicated with a third interface; the first interface is communicated with the high-pressure hole so as to be communicated with the high-pressure conduit, the second interface is communicated with the low-pressure hole so as to be communicated with the low-pressure conduit, and the third interface is communicated with the cavity at the upper end of the piston.
CN202110508585.8A 2021-05-11 2021-05-11 Three-way valve Pending CN115325210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110508585.8A CN115325210A (en) 2021-05-11 2021-05-11 Three-way valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110508585.8A CN115325210A (en) 2021-05-11 2021-05-11 Three-way valve

Publications (1)

Publication Number Publication Date
CN115325210A true CN115325210A (en) 2022-11-11

Family

ID=83912040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110508585.8A Pending CN115325210A (en) 2021-05-11 2021-05-11 Three-way valve

Country Status (1)

Country Link
CN (1) CN115325210A (en)

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