Automobile electromagnetic warm water valve

Abstract

The utility model relates to the technical field of automobile warm water valves, in particular to an automobile electromagnetic warm water valve. The electromagnetic valve comprises a valve body, a first water outlet channel, a second water outlet channel, a water inlet channel, a first electromagnetic valve body and a second electromagnetic valve body are arranged on the valve body, the first electromagnetic valve body and the second electromagnetic valve body each comprise a shell, a valve rod, a coil assembly, a movable magnetic core and a fixed magnetic core, and the valve rod is installed in the center of the coil assembly in an axial moving mode; a sealing mechanism is arranged between the valve rod and the water inlet channel, a movable magnetic core and a fixed magnetic core are fixedly arranged on the valve rod, the movable magnetic core is arranged at the end, away from the water inlet channel, of the valve rod, a reset spring is arranged between the movable magnetic core and the fixed magnetic core, and a magnetic sleeve is arranged between the movable magnetic core and the coil assembly. The end, away from the fixed magnetic core, of the movable magnetic core is located in the middle of the magnetic sleeve, and the other end of the movable magnetic core extends out of the magnetic sleeve. After the prior art is improved, the electromagnetic warm water valve is high in closing speed and high in sensitivity.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile warm water valves, in particular to an automobile electromagnetic warm water valve. Background Art

[0002] The automobile electromagnetic warm water valve is mainly located between the engine main water tank and the heater water tank. Its function is to open and close the hot water flow through electromagnetic control. When the electromagnetic coil is powered off, the electromagnetic warm water valve opens, and the hot water flows through the heater heat exchanger, and the heat is blown into the cab through the blower to achieve the warm air function. When the electromagnetic coil is powered on, the electromagnetic warm water valve closes, and the hot water stops flowing, thereby achieving temperature regulation.

[0003] For example, a Chinese patent document with authorization number CN210344406U discloses a highly sealed automobile electromagnetic heating water valve, including a valve body, on which are provided a first water inlet channel, a second water inlet channel, a water outlet channel, a first solenoid valve and a second solenoid valve. The first water inlet channel is connected to the water outlet channel through a first central through hole, and the first solenoid valve cooperates with the first central through hole in opening and closing. The second water inlet channel is connected to the water outlet channel through the second central through hole, and the second solenoid valve cooperates with the second central through hole in opening and closing. The first solenoid valve and the second solenoid valve both include a shell, a valve stem, a coil assembly, a moving iron core and a fixed iron core. A sealing diaphragm is provided at the lower port of the shell, and the coil assembly The component is arranged in the shell, the valve stem can be axially moved and arranged in the center of the coil assembly and pass through the sealing diaphragm, the lower end of the valve stem is provided with a conical sealing head, the valve stem is fixedly provided with a moving iron core and movably provided with a fixed iron core, the moving iron core is arranged above the fixed iron core, and a reset spring is provided between the moving iron core and the fixed iron core; in the above-mentioned automobile electromagnetic water heating valve, when the electromagnetic coil is powered off, the upper end of the moving iron core is basically flush with the upper end of the coil assembly. When the electromagnetic coil is energized, it can only rely solely on the magnetic attraction between the moving iron core and the fixed iron core. The initial power is insufficient. At the same time, the gap between the moving iron core, the coil assembly and the magnetic sleeve is small, and friction resistance is prone to occur, resulting in a slow closing speed and low sensitivity of the electromagnetic water heating valve.

[0004] Therefore, it is necessary to improve the deficiencies in the above prior art. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an automobile electromagnetic water heating valve in view of the deficiencies of the above-mentioned prior art, so as to solve the problem that when the electromagnetic coil is powered off, the upper end of the moving magnetic core is basically flush with the upper end of the coil assembly. When the electromagnetic coil is powered on, it can only rely on the magnetic attraction between the moving magnetic core and the fixed magnetic core, resulting in insufficient initial power. At the same time, the gap between the moving magnetic core and the coil assembly and the magnetic sleeve is small, which is prone to friction resistance, resulting in slow closing speed and low sensitivity of the electromagnetic water heating valve.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile electromagnetic warm water valve, comprising a valve body, the valve body is provided with a first water outlet channel, a second water outlet channel, a water inlet channel, a first solenoid valve and a second solenoid valve, the first solenoid valve and the second solenoid valve both include a shell, a valve stem, a coil assembly, a moving magnetic core and a fixed magnetic core, the coil assembly is installed in the shell, the valve stem can be axially moved and installed in the center of the coil assembly, a sealing mechanism is provided between the valve stem and the water inlet channel, the moving magnetic core is fixedly connected to the valve stem, the fixed magnetic core is movably connected to the valve stem, the moving magnetic core is arranged at an end of the valve stem away from the water inlet channel, a reset spring is provided between the moving magnetic core and the fixed magnetic core, a magnetic sleeve is provided between the moving magnetic core and the coil assembly, the end of the moving magnetic core away from the fixed magnetic core is located in the middle of the magnetic sleeve, the other end extends out of the magnetic sleeve, and when the coil assembly is not energized, it can abut against the end of the magnetic sleeve close to the fixed magnetic core.

[0007] By adopting the above technical scheme, when the coil assembly is energized, the moving magnetic core, the fixed magnetic core and the magnetic sleeve are all magnetized, and the magnetic properties of the moving magnetic core and the fixed magnetic core at the close ends are different, and an attractive force is generated between them; while the magnetic properties of the moving magnetic core and the magnetic sleeve at the end away from the fixed magnetic core are the same, and a repulsive force is generated between them; thereby, both ends of the moving magnetic core simultaneously generate a force that causes it to approach the fixed magnetic core, so that the moving magnetic core can quickly drive the valve stem to quickly close the sealing mechanism, that is, the electromagnetic warm water valve closes quickly and has high sensitivity.

[0008] The above technical solution is further configured as follows: the outer diameter of the moving magnetic core close to the fixed magnetic core is larger than the inner diameter of the magnetic sleeve, and the outer diameter of the moving magnetic core gradually decreases to be smaller than the inner diameter of the magnetic sleeve toward the end away from the fixed magnetic core.

[0009] By adopting the above technical solution, when the coil assembly is not energized, the end with a larger outer diameter of the moving magnetic core can abut against the inner wall of the magnetic sleeve under the action of the elastic force of the reset spring, thereby avoiding shaking and ensuring stability; when the coil assembly is energized, the moving magnetic core moves toward the fixed magnetic core and squeezes the reset spring. Since the inner diameter of the moving magnetic core gradually decreases, the moving magnetic core no longer abuts against the inner wall of the magnetic sleeve, which can effectively avoid the friction resistance generated by the contact between the moving magnetic core and the magnetic sleeve, thereby further improving the closing speed of the electromagnetic warm water valve.

[0010] The above technical solution is further configured as follows: the first water outlet channel is connected to the water inlet channel via the first center through hole, the second water outlet channel is connected to the water inlet channel via the second center through hole, the sealing mechanism comprises a sealing head arranged at one end of the valve stem close to the water inlet channel, and sealing ring seats are respectively arranged at one end of the first center through hole and the second center through hole close to the sealing head, and the sealing ring seat is sealed in cooperation with the sealing head.

[0011] By adopting the above technical solution, when the coil assembly is energized, the moving magnetic core drives the valve stem, and the valve stem drives the sealing head to approach the sealing ring seat and seal it, thereby blocking the water flow and closing the electromagnetic water heating valve.

[0012] The above technical solution is further configured as follows: a sealing diaphragm is provided at one end of the shell close to the first water outlet channel and the second water outlet channel, and the valve stem passes through the sealing diaphragm and extends into the first water outlet channel or the second water outlet channel.

[0013] By adopting the above technical solution, the interior of the shell is sealed and isolated from the interior of the first water outlet channel or the second water outlet channel through the sealing diaphragm, thereby preventing water from flowing into the shell and causing a short circuit.

[0014] The above technical solution is further configured as follows: the valve stem passes through the moving magnetic core and has an interference fit therewith, and the valve stem passes through the fixed magnetic core and has a clearance fit therewith.

[0015] By adopting the above technical solution, the moving magnetic core is fixedly connected with the valve stem through interference fit so that the moving magnetic core can drive the valve stem to move, while the clearance fit between the fixed magnetic core and the valve stem can avoid the valve stem without affecting its movement.

[0016] The above technical solution is further configured as follows: the sealing head is conical and a connecting column is provided on the side away from the tip, a mounting hole is provided at the center of the valve stem, the sealing head is sealed and fixed on the valve stem by inserting the connecting column into the mounting hole through interference fit, and the sealing ring seat is provided with a sealing inclined surface close to the sealing head at one end thereof, which fits the conical surface of the sealing head.

[0017] By adopting the above technical solution, the sealing head is fixed on the valve stem by inserting the connecting column into the mounting hole. When the sealing inclined surface of the sealing ring seat fits with the conical surface of the sealing head, the sealing performance can be ensured, thereby blocking the water flow in the water inlet channel.

[0018] The beneficial effects achieved by the utility model are: the electromagnetic water heating valve has a fast closing speed and high sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0021] Figure 3 yes Figure 2 Partial view at point A in the middle;

[0022] Figure 4 It is a schematic structural diagram of the moving magnetic core in an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-4 As shown in the figure, an automobile electromagnetic warm water valve comprises a valve body 1, on which a first water outlet channel 2, a second water outlet channel 3, a water inlet channel 4, a first electromagnetic valve 5 and a second electromagnetic valve 6 are arranged. The first water outlet channel 2 is connected to the water inlet channel 4 through a first central through hole 20, and the second water outlet channel 3 is connected to the water inlet channel 4 through a second central through hole 30. The first electromagnetic valve 5 and the second electromagnetic valve 6 both comprise a housing 7, a valve stem 8, a coil assembly 9, a moving magnetic core 10 and a fixed magnetic core 11. The coil assembly 9 is installed in the housing 7, and the valve stem 8 can be axially movable. The valve stem 8 is installed in the center of the coil assembly 9, and the valve stem 8 passes through the moving magnetic core 10 and has an interference fit with it. The valve stem 8 passes through the fixed magnetic core 11 and has a clearance fit with it. The moving magnetic core 10 is arranged at the end of the valve stem 8 away from the water inlet channel 4. A reset spring 12 is arranged between the moving magnetic core 10 and the fixed magnetic core 11. A magnetic sleeve 13 is arranged between the moving magnetic core 10 and the coil assembly 9. The end of the moving magnetic core 10 away from the fixed magnetic core 11 is located in the middle of the magnetic sleeve 13, and the other end extends out of the magnetic sleeve 13. When the coil assembly 9 is not powered, it can abut against the end of the magnetic sleeve 13 close to the fixed magnetic core 11. The outer diameter of the end of the moving magnetic core 10 close to the fixed magnetic core 11 is larger than the inner diameter of the magnetic sleeve 13, and the outer diameter of the moving magnetic core 10 gradually decreases to less than the inner diameter of the magnetic sleeve 13 toward the end away from the fixed magnetic core 11. The valve stem 8 is provided with a sealing head 14 at one end close to the water inlet channel 4, and sealing ring seats 15 are provided at one end of the first central through hole 20 and the second central through hole 30 close to the sealing head 14, respectively. The sealing ring seats 15 are in sealing cooperation with the sealing head 14. The sealing head 14 is conical and is provided with a connecting column 141 on the side away from the tip. A mounting hole 80 is provided at the center of the valve stem 8. The sealing head 14 is sealed and fixed on the valve stem 8 by inserting the connecting column 141 into the mounting hole 80 through interference fit. The sealing ring seat 15 is provided with a sealing inclined surface that fits the conical surface of the sealing head 14 at one end close to the sealing head 14. The housing 7 is provided with a sealing diaphragm 16 at one end close to the first water outlet channel 2 and the second water outlet channel 3, and the valve stem 8 extends through the sealing diaphragm 16 into the first water outlet channel 2 or the second water outlet channel 3.

[0025] In the above embodiment, when the coil assembly 9 is not energized, the end of the moving magnetic core 10 with a larger outer diameter can abut against the inner wall of the magnetic sleeve 13 under the elastic force of the return spring 12, thereby avoiding shaking and ensuring stability; when the coil assembly 9 is energized, the moving magnetic core 10, the fixed magnetic core 11 and the magnetic sleeve 13 are all magnetized, and the magnetic properties of the moving magnetic core 10 and the fixed magnetic core 11 close to each other are different, and an attraction force is generated between each other; while the magnetic properties of the moving magnetic core 10 and the magnetic sleeve 13 far away from the fixed magnetic core 11 are the same, and a repulsion force is generated between each other; thereby, the moving magnetic core 10 and the magnetic sleeve 13 are in a state of being ... Both ends of the core 10 simultaneously generate a force that urges it to approach the fixed magnetic core 11, so that the moving magnetic core 10 can quickly drive the valve stem 8 and squeeze the reset spring 12, and the valve stem 8 drives the sealing head 14 to approach the sealing ring seat 15 until the channel opening is sealed. As the inner diameter of the moving magnetic core 10 gradually decreases, the moving magnetic core 10 no longer abuts against the inner wall of the magnetic sleeve 13, which can effectively avoid the friction resistance generated by the contact between the moving magnetic core 10 and the magnetic sleeve 13; therefore, the electromagnetic warm water valve closes quickly and has high sensitivity.

Claims

1. An automobile electromagnetic water heater valve, comprising a valve body, the valve body is provided with a first water outlet channel, a second water outlet channel, a water inlet channel, a first electromagnetic valve and a second electromagnetic valve; the first electromagnetic valve and the second electromagnetic valve both comprise a housing, a valve stem, a coil assembly, a moving magnetic core and a fixed magnetic core, the coil assembly is mounted in the housing, the valve stem is axially movable and mounted in the center of the coil assembly, a sealing mechanism is provided between the valve stem and the water inlet channel, the moving magnetic core is fixedly connected to the valve stem, the fixed magnetic core is movably connected to the valve stem, the moving magnetic core is arranged at one end of the valve stem away from the water inlet channel, a reset spring is provided between the moving magnetic core and the fixed magnetic core, and a magnetic sleeve is provided between the moving magnetic core and the coil assembly, characterized in that: The moving magnetic core has one end away from the fixed magnetic core and is located in the middle of the magnetic sleeve, and the other end extends out of the magnetic sleeve. When the coil assembly is not energized, it can abut against the end of the magnetic sleeve close to the fixed magnetic core.

2. The automobile electromagnetic water heater valve according to claim 1, characterized in that: The outer diameter of the moving magnetic core close to the fixed magnetic core is larger than the inner diameter of the magnetic sleeve, and the outer diameter of the moving magnetic core gradually decreases to be smaller than the inner diameter of the magnetic sleeve toward the end away from the fixed magnetic core.

3. The automobile electromagnetic water heating valve according to claim 2, characterized in that: The first water outlet channel is connected to the water inlet channel via the first center through hole, and the second water outlet channel is connected to the water inlet channel via the second center through hole. The sealing mechanism includes a sealing head arranged at one end of the valve stem close to the water inlet channel, and sealing ring seats respectively arranged at one end of the first center through hole and the second center through hole close to the sealing head. The sealing ring seat is in sealing cooperation with the sealing head.

4. The automobile electromagnetic water heating valve according to claim 3, characterized in that: The shell is provided with a sealing membrane at one end close to the first water outlet channel and the second water outlet channel, and the valve stem passes through the sealing membrane and extends into the first water outlet channel or the second water outlet channel.

5. The automobile electromagnetic water heating valve according to claim 4, characterized in that: The valve stem passes through the moving magnetic core and is interference fit with the moving magnetic core, and the valve stem passes through the fixed magnetic core and is clearance fit with the fixed magnetic core.

6. An automobile electromagnetic water heating valve according to any one of claims 3 to 5, characterized in that: The sealing head is conical and has a connecting column on the side away from the tip. A mounting hole is provided in the center of the valve stem. The sealing head is sealed and fixed on the valve stem by inserting the connecting column into the mounting hole through interference fit. The sealing ring seat is provided with a sealing inclined surface close to the sealing head at one end thereof, which fits the conical surface of the sealing head.

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