CN212986123U - Pilot valve, four-way valve and air conditioner - Google Patents
Pilot valve, four-way valve and air conditioner Download PDFInfo
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- CN212986123U CN212986123U CN202020994152.9U CN202020994152U CN212986123U CN 212986123 U CN212986123 U CN 212986123U CN 202020994152 U CN202020994152 U CN 202020994152U CN 212986123 U CN212986123 U CN 212986123U
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Abstract
The utility model relates to a pilot valve, cross valve and air conditioner, the pilot valve includes pilot valve body, pilot slide valve, solenoid subassembly and magnetic component, the solenoid subassembly has two sets, including solenoid, spring and armature, one end of spring is fixed, the other end passes through armature rigid coupling in one end of pilot slide valve; wherein the electromagnetic coil comprises a first electromagnetic coil and a second electromagnetic coil; the magnetic assembly is configured to: if the second electromagnetic coil is electrified, the corresponding spring drives the pilot slide valve to move from the first valve position to the second valve position, the second electromagnetic coil is powered off, and the magnetic assembly enables the pilot slide valve to be maintained at the second valve position. The utility model discloses only need second solenoid short-time circular telegram, make the guide's slide valve remove the second valve position from first valve position after, second solenoid outage, guide's slide valve keeps at the second valve position under magnetic component's effect, need not continuously provide the energy for second solenoid to can reduce the energy consumption, the energy saving.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to a pilot valve, cross valve and air conditioner.
Background
The four-way valve can control the flowing direction of the refrigerant, so that the heat pump type air conditioner can realize the switching of the cooling and heating functions.
In the prior art, when the air conditioner operates in the cooling mode, the four-way valve is not powered on, and when the air conditioner is switched to the heating mode, the pilot valve needs to be continuously powered, a pilot slide valve of the pilot valve slides under the action of magnetic force generated by an electromagnetic coil to overcome the acting force of a compression spring, so that a valve port on a pilot valve body is switched to a communication mode, high-pressure refrigerants enter an inner cavity at one end of a main valve of the four-way valve, low-pressure refrigerants in an inner cavity at the other end of the main valve are discharged, thus a pressure difference is formed at two ends of the main slide valve of the main valve, a main slide valve block moves due to the existence of the pressure difference, an exhaust pipe of the main valve. Under severe cold working conditions, in order to keep the air conditioner in a heating mode, the electromagnetic coil of the pilot valve must be continuously powered, so that the loss and waste of electric energy are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, a first aspect of the present invention provides a pilot valve, the pilot valve includes:
a pilot valve body including a first port, a second port, a third port, and a fourth port;
the pilot valve body is positioned in the pilot valve body and is divided into a first chamber and a second chamber which are independent, the first valve port is always communicated with the first chamber, and the third valve port is always communicated with the second chamber; the pilot spool is movable in the pilot valve body, when the pilot spool moves to a first valve position, the fourth valve port is communicated with the first chamber, the second valve port is communicated with the second chamber, when the pilot spool moves to a second valve position, the second valve port is communicated with the first chamber, and the fourth valve port is communicated with the second chamber;
the electromagnetic coil assembly comprises an electromagnetic coil and a spring positioned in the electromagnetic coil, wherein one end of the spring is fixed, and the other end of the spring is connected with an armature; the armatures are respectively and fixedly connected to two ends of the pilot slide valve; the electromagnetic coil assembly has two sets, wherein the electromagnetic coil comprises a first electromagnetic coil and a second electromagnetic coil; and
a magnetic assembly mounted in the first chamber or the second chamber of the pilot valve body.
The utility model discloses a set up solenoid subassembly and magnetic component in the pilot valve, only need second solenoid to power on briefly, make the pilot slide valve remove the second valve position from first valve position, second solenoid is electrified down, and the pilot slide valve keeps at the second valve position under magnetic component's effect, need not continuously provide energy for second solenoid to can reduce the energy consumption, the energy saving.
Further, the two sets of springs are configured to: when the pilot spool is located at the second valve position, if the first electromagnetic coil is electrified and then overcomes the magnetic force among the magnetic assemblies, the first electromagnetic coil is powered off after the pilot spool moves from the second valve position to the first valve position, and the two groups of springs enable the pilot spool to be maintained at the first valve position.
The utility model discloses a make first solenoid circular telegram, after the guide's sliding valve was removed first valve position by the second valve position, first solenoid outage through the elasticity balance between two sets of springs, makes the guide's sliding valve maintain first valve position, need not continuously provide energy for first solenoid to can reduce the energy consumption, the energy saving.
Further, the two sets of springs are configured to: and if the first electromagnetic coil and the second electromagnetic coil are powered off, the two groups of springs enable the pilot spool to be located at the first valve position.
The utility model discloses a spring force balance of two sets of springs makes the guide's slide valve maintain at first valve position, and simple structure need not consume electric energy, the energy saving.
Further, the magnetic assembly includes a magnet and a ferromagnetic member, one of which is disposed at an outer end of the pilot spool and the other of which is correspondingly disposed in the first chamber adjacent to one side of the outer end of the pilot spool.
The utility model discloses a set up magnet and ferromagnetism part in the pilot valve, when second solenoid circular telegram, the guide's slide valve removes the magnetic stroke within range of magnet, ferromagnetism part and magnet actuation, after the second solenoid outage, guide's slide valve keeps at the second valve position under the actuation effect of ferromagnetism part and magnet, need not continuously provide energy, the energy saving for second solenoid; in addition, the valve position is kept by adopting the magnet and the ferromagnetic component, the structure is simple, the cost is low, and the installation is easy.
Further, the ferromagnetic member is provided at an outer end portion of the pilot spool, and the magnet is provided in the first chamber.
Further, the magnetic assembly includes a magnet and a ferromagnetic member, one of which is disposed on an inner wall surface of the pilot spool and the other of which is correspondingly disposed in the second chamber.
Furthermore, the magnet is a permanent magnet, so that the magnet does not need to be electrified, the energy is saved, and the cost is low.
Furthermore, the material of the pilot slide valve is plastic.
A second aspect of the present invention provides a four-way valve, comprising a main valve, a plurality of connecting pipes and the above-mentioned pilot valve; the main valve includes:
a main valve body including a first port, a second port, a third port, and a fourth port;
a main spool valve controlling movement of the main spool valve along an inner cavity of the main valve body;
the pilot valve is configured to: when the pilot spool is in the first valve position, the main spool is in a first working position, so that the first port is communicated with the fourth port, and the second port is communicated with the third port; when the pilot spool is in the second position, the main spool is in a second operating position, which communicates the first port with the second port and communicates the third port with the fourth port.
A third aspect of the utility model provides an air conditioner, including outdoor heat exchanger, indoor heat exchanger, compressor and the aforesaid the cross valve, first port with the gas vent of compressor is connected, the second port with the indoor heat exchanger connecting pipe is connected, the third port with the return-air inlet of compressor is connected, the fourth port with the outdoor heat exchanger connecting pipe is connected.
The utility model discloses a pilot valve to the control cross valve improves the design, makes the air conditioner get into the mode of heating or withdraw from when heating the mode, only needs the short duration to second solenoid or first solenoid circular telegram, can reduce the extra consumption of solenoid, the energy saving.
Drawings
Fig. 1 is a schematic structural diagram of a pilot valve in a second valve position according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pilot valve in a first valve position according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a four-way valve in a second working position according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a four-way valve in a first working position according to an embodiment of the present invention;
description of reference numerals:
a 10-four-way valve;
100-a pilot valve; 110 — a pilot valve body; 111-a first valve port; 112-a second valve port; 113-a third valve port; 114-a fourth port; 1101-a first chamber; 1102-a second chamber; 120-a pilot spool; 130-a solenoid coil assembly; 131-a solenoid coil; 1311-a first electromagnetic coil; 1312-a second electromagnetic coil; 132-a spring; 133-an armature; 140-a magnetic component; 141-a magnet; 142-a ferromagnetic component; 200-a main valve; 210-a main valve body; 211 — a first port; 212-a second port; 213-third port; 214-a fourth port; 220-a main spool valve; 2101-left chamber; 2102-right chamber;
300-connecting pipe; 301-pilot valve exhaust connection pipe; 302-pilot valve return air connecting pipe; 303-a pilot valve left balance pipe; 304-pilot valve right balance tube; 305-main valve exhaust connection pipe; 306-main valve return air connecting pipe; 307-indoor heat exchanger connecting pipe; 308-outdoor heat exchanger connecting pipe;
20-an air conditioner; 201-indoor heat exchanger; 202-outdoor heat exchanger; 203-a compressor;
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 1-4 are described in detail below.
In the present invention, the terms "inside", "outside", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a first aspect of the present invention provides a pilot valve 100 for controlling the main valve actuation of a four-way valve, comprising:
a pilot body 110, the pilot body 110 including a first port 111, a second port 112, a third port 113, and a fourth port 114;
a pilot spool 120 located in the pilot valve body 110 and dividing the pilot valve body 110 into a first chamber 1101 and a second chamber 1102 which are independent from each other, the first port 111 always communicating with the first chamber 1101, and the third port 113 always communicating with the second chamber 1102; the pilot spool 120 is movable within the pilot valve body 110, and when moved to the first position, the fourth port 114 communicates with the first chamber 1101, the second port 112 communicates with the second chamber 1102, and when moved to the second position, the second port 112 communicates with the first chamber 1101, and the fourth port 114 communicates with the second chamber 1102;
a magnetic assembly 140, the magnetic assembly 140 being mounted in the first chamber 1101 or the second chamber 1102 of the pilot valve body 110, the magnetic assembly 140 being configured to: if the second solenoid 1312 is energized, the corresponding spring 132 drives the pilot spool 120 to move from the first position to the second position, the second solenoid 1312 is de-energized, and the magnetic assembly 140 maintains the pilot spool 120 at the second position.
In the present embodiment, referring to fig. 1, the first port 111 is disposed at an upper side of the pilot valve body 110, and the second port 112, the third port 113 and the fourth port 114 are disposed at a lower side of the pilot valve body 110 and are sequentially disposed side by side along an axial direction of the pilot valve body 110;
when the pilot spool 120 is located at the left side of the inner cavity of the pilot valve body 110, the pilot valve 100 is at the first valve position; when the pilot spool 120 is positioned to the right of the interior cavity of the pilot valve body 110, the pilot valve is in the second position.
Therefore, the utility model discloses a set up solenoid assembly 130 and magnetic component 140 in pilot valve 100, only need second solenoid 1312 briefly to go up the electricity, make pilot spool 120 move from first valve position to second valve position, second solenoid 1312 is electrified down, and pilot spool 120 keeps at the second valve position under magnetic component 140's effect, need not continuously provide energy for second solenoid 1312 to can reduce the energy consumption, the energy saving.
Preferably, referring to fig. 2, the two sets of springs 132 are configured to: when the pilot spool 120 is in the second position, after the first electromagnetic coil 1311 is energized and overcomes the magnetic force between the magnetic assemblies 140 to move the pilot spool 120 from the second position to the first position, the first electromagnetic coil 1311 is de-energized and the two sets of springs 132 maintain the pilot spool 120 in the first position.
Therefore, the utility model discloses a make first solenoid 1311 circular telegram, after pilot spool 120 moved first valve position by the second valve position, first solenoid 1311 outage made the pilot spool 120 maintain first valve position through the elasticity balance between two sets of springs 132, need not last for first solenoid 1311 provides the energy to can reduce the energy consumption, the energy saving.
Preferably, referring to fig. 2, the two sets of springs 132 are configured to: when both the first solenoid 1311 and the second solenoid 1312 are de-energized, the two sets of springs 132 position the pilot spool 120 in the first position.
Therefore, the utility model discloses a two sets of spring 132's elasticity is balanced, makes guide's spool 120 maintain at first valve position, and simple structure need not consume the electric energy, the energy saving.
It should be noted that the two sets of springs 132 can be both extension springs 132 or compression springs 132.
In one embodiment, the magnetic assembly 140 includes a magnet 141 and a ferromagnetic member 142, one of the magnet 141 and the ferromagnetic member 142 is disposed at the outer end of the pilot spool 120, and the other is disposed in the first chamber 1101, adjacent to one side of the outer end of the pilot spool 120; the magnet 141 and the ferromagnetic member 142 are configured to: when the second solenoid 1312 is energized, the corresponding spring 132 drives the pilot spool 120 to move from the first valve position to the second valve position, and the second solenoid 1312 is de-energized, so that the magnet 141 and the ferromagnetic member 142 attract each other, and the pilot spool 120 is maintained at the second valve position.
Therefore, the utility model discloses a set up magnet 141 and ferromagnetic part 142 in the pilot valve, when second solenoid 1312 circular telegram, pilot spool 120 moves to the magnetic stroke within range of magnet 141, ferromagnetic part 142 and magnet 141 actuation, after second solenoid 1312 outage, pilot spool 120 keeps at the second valve position under ferromagnetic part 142 and magnet 141's actuation, need not continuously provide energy for second solenoid 1312, the energy saving; in addition, the valve position is kept by the magnet 141 and the ferromagnetic part 142, and the valve position keeping device is simple in structure, low in cost and easy to install.
Preferably, the ferromagnetic member 142 is disposed at an outer end of the pilot spool 120, and the magnet 141 is disposed in the first chamber 1101.
In this embodiment, referring to fig. 2, the magnet 141 is fixedly installed in the first chamber 1101 and located on the right side of the pilot spool, the ferromagnetic member 142 is an iron piece and is disposed on the upper right side of the pilot spool 120, and when the pilot spool 120 is in the first valve position, the distance between the iron piece and the magnet 141 is greater than the magnetic path of the magnet 141, so that the pilot spool 120 is maintained in the first valve position under the action of the two sets of springs 132.
In another embodiment, the magnetic assembly 140 includes a magnet 141 and a ferromagnetic member 142, one of the magnet 141 and the ferromagnetic member 142 is disposed on an inner wall surface of the pilot spool 120, and the other is correspondingly disposed in the second chamber 1102, and the magnet 141 and the ferromagnetic member 142 are configured to: when the second solenoid 1312 is energized, the corresponding spring 132 drives the pilot spool 120 to move from the first valve position to the second valve position, and the second solenoid 1312 is de-energized, so that the magnet 141 and the ferromagnetic member 142 attract each other, and the pilot spool 120 is maintained at the second valve position.
In other embodiments, the magnetic assembly 140 includes a first magnet 141 and a second magnet 141, one of which is disposed outside the pilot spool 120 and the other of which is correspondingly disposed in the first chamber 1101; or one of them is provided on the inner wall surface of the pilot spool 120, and the other is correspondingly provided in the second chamber 1102; and the adjacent magnetic poles of the first magnet 141 and the second magnet 141 are opposite.
The ferromagnetic member 142 is configured to be attracted to the magnet 141. The ferromagnetic member 142 and the pilot spool 120 are not limited to screw connection, snap connection, or adhesion.
The magnet 141 is an electromagnet or a permanent magnet, and preferably, the magnet 141 is a permanent magnet, so that the power is not required to be supplied, the energy is saved, and the cost is low.
The pilot spool 120 is made of plastic, preferably, the pilot spool 120 is made of teflon, and as the teflon is a plastic with high temperature resistance and an extremely low friction coefficient, the effect of sealing and flexible sliding can be achieved when the pilot spool 120 is made of teflon.
Preferably, the magnetic force generated when the first solenoid 1311 is energized is greater than the magnetic force of the magnet 141, so that the pilot spool 120 moves by the magnetic force of the first solenoid 1311, and the iron piece is driven to be released from the magnetic force of the magnet 141, thereby moving the pilot spool 120 from the second valve position to the first valve position.
Referring to fig. 3 and 4, a second aspect of the present invention provides a four-way valve 10, including a main valve 200, a plurality of connection pipes 300, and the above-mentioned pilot valve 100, wherein the main valve 200 and the pilot valve 100 are connected through the plurality of connection pipes 300, and the main valve 200 includes:
a main valve body 210, the main valve body 210 comprising a first port 211, a second port 212, a third port 213 and a fourth port 214;
a main spool valve 220, the pilot valve 100 controlling the main spool valve 220 to move along the inner cavity of the main valve body 210;
the pilot valve 100 is configured to: when the pilot spool 120 is in the first position, the main spool 220 is in the first operating position, communicating the first port 211 with the fourth port 214 and communicating the second port 212 with the third port 213; when the pilot spool 120 is in the second position, the main spool 220 is in the second operating position, communicating the first port 211 with the second port 212 and communicating the third port 213 with the fourth port 214.
In the present embodiment, referring to fig. 3, the first port 211 is separately provided at the upper side of the main valve body 210, and the second port 212, the third port 213 and the fourth port 214 are provided at the lower side of the main valve body 210, and are sequentially provided side by side along the axial direction of the main valve body 210; the main valve body 210 includes a left chamber 2101 and a right chamber 2102, respectively located on both sides of the main spool valve 220;
the plurality of connection pipes 300 comprise a pilot valve exhaust connection pipe 301, a pilot valve air return connection pipe 302, a pilot valve left balance pipe 303, a pilot valve right balance pipe 304, a main valve exhaust connection pipe 305 and a main valve air return connection pipe 306, and the first valve port 111 of the pilot valve is communicated with the main valve exhaust connection pipe 305 through the pilot valve exhaust connection pipe 301; the second port 112 communicates with the left chamber of the main valve through the left pilot balancing pipe 303, the third port 113 communicates with the main valve return connecting pipe 306 through the pilot return connecting pipe 302, and the fourth port 114 communicates with the right chamber of the main valve through the right pilot balancing pipe 304.
Referring to fig. 4, when the pilot valve 100 is in the first valve position, the first valve port 111 and the fourth valve port 114 are communicated through the first chamber 1101, the second valve port 112 and the third valve port 113 are communicated through the second chamber 1102, so that the left chamber 2101 of the main valve 200 is communicated with the main valve return connection pipe 306 through the pilot left balance pipe 303 and the pilot return connection pipe 302, the right chamber 2102 of the main valve 200 is communicated with the main valve exhaust connection pipe 305 through the pilot right balance pipe 304 and the pilot exhaust connection pipe 301, so that the pressure applied to the right end of the main spool 220 is greater than the pressure applied to the left end of the main spool 220, and the main spool 220 is switched from the second operating position to the first operating position or maintained at the first operating position;
referring to fig. 3 and 4, when the pilot valve 100 is in the second valve position, the first port 111 and the second port 112 are communicated through the first chamber 1101, the third port 113 and the fourth port 114 are communicated through the second chamber 1102, the left chamber 2101 of the main valve 200 is communicated with the main valve exhaust connection pipe 305 through the pilot left balance pipe 303 and the pilot exhaust connection pipe 301, the right chamber 2102 of the main valve 200 is communicated with the main valve return connection pipe 306 through the pilot right balance pipe 304 and the pilot return connection pipe 302, and the left end of the main spool 220 is pressurized to a greater pressure than the right end of the main spool 220, so that the main spool 220 is switched from the first operating position to the second operating position or maintained at the second operating position.
In the present embodiment, referring to fig. 3 and 4, when the main spool valve 220 is positioned at the left side of the inner cavity of the main valve body 210, the main spool valve 220 is in the first operating position; with the main spool valve 220 to the right of the interior chamber of the main valve body 210, the main spool valve 220 is in the second operating position.
Referring to fig. 3 and 4, a third aspect of the present invention provides an air conditioner 20, including an outdoor heat exchanger 202, an indoor heat exchanger 201, a compressor 203, and the four-way valve 10, wherein a first port 211 is connected to an exhaust port of the compressor 203, a second port 212 is connected to an indoor heat exchanger connecting pipe 307, a third port 213 is connected to a return air port of the compressor 203, and a fourth port 214 is connected to an outdoor heat exchanger connecting pipe 308.
Referring to fig. 3 and 4, when the main spool valve 220 is in the first operating position, the first port 211 is in communication with the fourth port 214, the second port 212 is in communication with the third port 213, the main valve exhaust connection pipe 305 is in communication with the outdoor heat exchanger connection pipe 308 via the first port 211 and the fourth port 214, the main valve return connection pipe 306 is in communication with the indoor heat exchanger connection pipe 307 via the second port 212 and the third port 213, and the air conditioner 20 is in the cooling mode;
when the main spool valve 220 is in the second operating position, the first port 211 communicates with the second port 212, the third port 213 communicates with the fourth port 214, the main valve exhaust connection pipe 305 communicates with the indoor heat exchanger exhaust pipe 307 via the first port 211 and the second port 212, the main valve return connection pipe 306 communicates with the outdoor heat exchanger exhaust pipe 308 via the third port 213 and the fourth port 214, and the air conditioner 20 is in the heating mode.
Therefore, the present invention improves the design of the pilot valve 100, so that the air conditioner 20 only needs to briefly energize the second solenoid 1312 or the first solenoid 1311 when entering the heating mode or exiting the heating mode, thereby reducing the extra power consumption of the solenoid and saving energy.
The utility model discloses a theory of operation:
referring to fig. 1-4, when the air conditioner 20 operates in the cooling mode, the first electromagnetic coil 1311 and the second electromagnetic coil 1312 are not energized, and the distance from the iron piece of the pilot spool 120 to the magnet 141 is greater than the magnetic range of the magnet 141, so that the magnet 141 cannot attract the iron piece of the pilot spool 120, the pilot spool 120 is maintained at the first valve position by the elastic force balance of the two sets of springs 132, that is, the pilot spool 120 is located at the left side of the inner cavity of the pilot valve body 110, the high-pressure fluid discharged from the exhaust port of the compressor 203 sequentially enters the right chamber 2102 of the main valve 200 through the main valve exhaust connection pipe 305, the pilot valve exhaust connection pipe 301, the first valve port 111, the fourth valve port 114, and the pilot valve right balance pipe 304, and the low-pressure fluid in the left chamber 2101 of the main valve 200 sequentially enters the compressor return port through the pilot valve left balance pipe 303, the second valve port 112, the third valve 113, the pilot valve return, when the pressure in the second chamber 1102 is greater than the pressure in the first chamber 1101, a pressure difference is formed, the main spool 220 moves to the left, the main spool 220 is positioned in the first operating position, that is, the main spool 220 is positioned on the left side of the inner cavity of the main valve body 210, the first port 211 and the fourth port 214 are communicated, the second port 212 and the third port 213 are communicated, the fluid flows into the return port of the compressor 203 through the indoor heat exchanger connecting pipe 307, the second port 212, the third port 213 and the main valve return air connecting pipe 306, the high-pressure fluid flows out from the exhaust port of the compressor 203, flows into the outdoor heat exchanger 202 through the main valve exhaust connecting pipe 305, the first port 211, the fourth port 214 and the outdoor heat exchanger connecting pipe 308, and then flows into the indoor heat exchanger 201, so that the indoor heat and the outdoor heat are exchanged.
When the air conditioner 20 operates in the heating mode, the second electromagnetic coil 1312 is energized, the magnetic force generated by the second electromagnetic coil 1312 breaks the elastic force balance between the two sets of springs 132, when the pilot spool 120 moves to the right to the magnetic range of the iron piece and the magnet 141, the iron piece is attracted by the magnet 141, the second electromagnetic coil 1312 is de-energized after the pilot spool 120 moves from the first valve position to the second valve position, the pilot spool 120 maintains at the second valve position, the first valve port 111 is communicated with the second valve port 112, the third valve port 113 is communicated with the fourth valve port 114, and the high-pressure fluid discharged from the exhaust port of the compressor 203 sequentially enters the left chamber 2101 of the main valve 200 through the main valve exhaust connection pipe 305, the pilot valve exhaust connection pipe 301, the first valve port 111, the second valve port 112 and the pilot valve left balance pipe 303; the low-pressure fluid in the right chamber 2102 flows into the return port of the compressor 203 through the pilot right balance pipe 304, the fourth valve port 114, the third valve port 113, the pilot return connection pipe 302, and the main return connection pipe 306; the pressure of the left chamber 2101 is greater than the pressure of the right chamber 2102 to form a pressure difference, the main spool valve 220 moves to the right, the main spool valve 220 is located at the second working position, namely the main spool valve 220 is located at the right side of the inner cavity of the main valve body 210, the first port 211 is communicated with the second port 212, the third port 213 is communicated with the fourth port 214, the fluid enters the return port of the compressor 203 through the outdoor heat exchanger exhaust pipe 308, the fourth port 214, the third port 213 and the main valve return air connecting pipe 306, the high-pressure fluid compressed by the compressor 203 enters the indoor heat exchanger 201 through the main valve exhaust connecting pipe 305, the first port 211, the second port 212 and the indoor heat exchanger connecting pipe 307, and then flows into the outdoor heat exchanger 202 to form a heating cycle, so that the heat exchange between the indoor and the outdoor is realized.
When the air conditioner 20 is switched from the heating mode to the cooling mode, the first solenoid 1311 is energized to move the pilot spool 120 leftward by the magnetic force generated by the first solenoid 1311, and the iron piece is driven to separate from the magnet 141, so that the pilot spool 120 is returned to the first valve position.
When the air conditioner 20 exits the heating mode, after the compressor 203 stops operating, the first solenoid 1311 is energized, so that the pilot spool 120 moves leftward by the magnetic force generated by the first solenoid 1311, and the iron piece is driven to separate from the magnet 141, so that the pilot spool 120 returns to the first valve position.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. A pilot valve (100), characterized in that the pilot valve (100) comprises:
a pilot valve body (110), the pilot valve body (110) comprising a first port (111), a second port (112), a third port (113), and a fourth port (114);
a pilot spool (120) located in the pilot valve body (110) and dividing the pilot valve body (110) into a first chamber (1101) and a second chamber (1102) which are independent of each other, the first port (111) always communicating with the first chamber (1101), and the third port (113) always communicating with the second chamber (1102); the pilot spool (120) is movable within the pilot valve body (110), the fourth port (114) communicates with the first chamber (1101) when moved to a first position, the second port (112) communicates with the second chamber (1102), the second port (112) communicates with the first chamber (1101) when moved to a second position, the fourth port (114) communicates with the second chamber (1102);
the electromagnetic coil assembly (130) comprises an electromagnetic coil (131) and a spring (132) positioned in the electromagnetic coil (131), wherein one end of the spring (132) is fixed, and the other end of the spring is connected with an armature (133); one end, far away from the spring (132), of the armature (133) is fixedly connected to the end part of the pilot spool (120); the solenoid coil assembly (130) has two sets, wherein the solenoid coil (131) includes a first solenoid coil (1311) and a second solenoid coil (1312); and
a magnetic assembly (140), the magnetic assembly (140) being mounted in the first chamber (1101) or the second chamber (1102) of the pilot valve body (110).
2. The pilot valve (100) of claim 1, wherein the two sets of springs (132) are configured to: when the pilot spool (120) is located at the second valve position, after the first electromagnetic coil (1311) is electrified and the magnetic force between the magnetic assemblies (140) is overcome, the first electromagnetic coil (1311) is powered off after the pilot spool (120) moves from the second valve position to the first valve position, and the two groups of springs (132) enable the pilot spool (120) to be maintained at the first valve position.
3. The pilot valve (100) of claim 1, wherein the two sets of springs (132) are configured to: the two sets of springs (132) position the pilot spool (120) in the first position if both the first solenoid (1311) and the second solenoid (1312) are de-energized.
4. The pilot valve (100) of claim 2, wherein the magnetic assembly (140) comprises a magnet (141) and a ferromagnetic member (142), one of the magnet (141) and the ferromagnetic member (142) being disposed at an outboard end of the pilot spool (120), the other being disposed in the first chamber (1101), adjacent to one side of the outboard end of the pilot spool (120).
5. The pilot valve (100) of claim 4, wherein the ferromagnetic member (142) is disposed at an outboard end of the pilot spool (120), and the magnet (141) is disposed in the first chamber (1101).
6. The pilot valve (100) of claim 2, wherein the magnetic assembly (140) comprises a magnet (141) and a ferromagnetic member (142), one of the magnet (141) and the ferromagnetic member (142) being disposed on an inner wall surface of the pilot spool (120), the other being correspondingly disposed in the second chamber (1102).
7. The pilot valve (100) of claim 4 or 6, wherein the magnet (141) is a permanent magnet (141).
8. The pilot valve (100) according to claim 1, wherein the material of the pilot spool (120) is plastic.
9. A four-way valve (10) comprising a main valve (200), a number of connection tubes (300) and a pilot valve (100) according to any of claims 1-8; the main valve (200) comprises:
a main valve body (210), the main valve body (210) comprising a first port (211), a second port (212), a third port (213), and a fourth port (214);
a main spool valve (220), the pilot valve (100) controlling the main spool valve (220) to move along an inner cavity of the main valve body (210);
the pilot valve (100) is configured to: when the pilot spool (120) is in the first position, the main spool (220) is in a first operating position, communicating the first port (211) with the fourth port (214) and communicating the second port (212) with the third port (213); when the pilot spool (120) is in the second position, the main spool (220) is in a second operating position, communicating the first port (211) with the second port (212) and communicating the third port (213) with the fourth port (214).
10. An air conditioner (20) comprising an outdoor heat exchanger (202), an indoor heat exchanger (201), a compressor (203), and the four-way valve (10) of claim 9, wherein the first port (211) is connected to an exhaust port of the compressor (203), the second port (212) is connected to an indoor heat exchanger connecting pipe (307), the third port (213) is connected to a return air port of the compressor (203), and the fourth port (214) is connected to an outdoor heat exchanger connecting pipe (308).
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| CN202020994152.9U CN212986123U (en) | 2020-06-03 | 2020-06-03 | Pilot valve, four-way valve and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354860A (en) * | 2022-01-30 | 2022-04-15 | 安徽芯核防务装备技术股份有限公司 | Large-range high-precision gas measurement system and detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354860A (en) * | 2022-01-30 | 2022-04-15 | 安徽芯核防务装备技术股份有限公司 | Large-range high-precision gas measurement system and detector |
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