Automobile evaporator capable of adjusting pressure

Abstract

The utility model relates to the technical field of evaporators, and discloses a pressure-adjustable automobile evaporator which comprises an evaporator mechanism and further comprises a detection mechanism, a control mechanism, a first adjusting mechanism and a second adjusting mechanism. The positions of the first adjusting mechanism and the second adjusting mechanism are adjusted respectively, the pressure in the evaporator body is detected through the detection mechanism, the control mechanism is driven to move, and when the pressure in the evaporator body is too large, a movable block in the control mechanism makes contact with the first adjusting mechanism; when the internal pressure of the evaporator main body is too low, a movable block moves downwards and makes contact with a second adjusting mechanism, and the second adjusting mechanism controls the compressor to reduce the power; the speed of the compressor for extracting the coolant in the evaporator body is increased, so that the internal pressure of the evaporator body is increased, and the flexibility of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, and more specifically to an automobile evaporator with adjustable pressure. Background Art

[0002] The evaporator is an important component of automobile air conditioning and is a heat exchanger. After the refrigerant enters the evaporator box, it will expand and absorb heat, so the evaporator box will be cooled. At this time, the wind blown by the blower will pass through the evaporator box, so that cold air will be blown out of the air outlet of the air conditioner. The evaporator box plays the role of cooling the wind blown by the blower. The compressor continuously compresses the refrigerant and transports the refrigerant to the evaporator box. The refrigerant expands and absorbs heat in the evaporator box, so that the refrigerant can cool the evaporator box. The cooled evaporator box can cool the wind blown by the blower, so that cold air can be blown out of the air outlet of the air conditioner.

[0003] The existing technology is inadequate: during the operation of the evaporator, high-pressure and low-temperature coolant enters the interior of the evaporator, the coolant expands and absorbs heat, and the internal pressure of the evaporator changes with use. The existing evaporator cannot understand the changes in the internal pressure of the evaporator in real time during use; and the heat absorbed by the coolant in the evaporation and heat absorption process inside the evaporator is controlled, and the internal pressure of the evaporator changes when it is converted into a gas. Excessive internal pressure of the evaporator affects the evaporation of the coolant, and the existing equipment cannot accurately adjust the internal pressure of the evaporator. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a vehicle evaporator with adjustable pressure to solve the problems existing in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile evaporator with adjustable pressure, comprising an evaporator mechanism, and also comprising: a detection mechanism, a control mechanism, a first adjustment mechanism and a second adjustment mechanism, the top of the evaporator mechanism is fixedly connected to the bottom of the detection mechanism, the side of the control mechanism is fixedly connected to the side of the detection mechanism, the side of the first adjustment mechanism is fixedly connected to the side of the control mechanism, the side of the second adjustment mechanism is fixedly connected to the side of the control mechanism, the structure of the first adjustment mechanism is the same as that of the second adjustment mechanism, the evaporator mechanism comprises an evaporator body, the detection mechanism comprises a mounting tube, the bottom end of the mounting tube is fixedly connected to the top of the evaporator body, the side inner wall of the mounting tube is movably connected with a sealing plug, and the sealing plug The top of the locking cam is fixedly connected with a pressure spring, the top of the pressure spring is fixedly connected with the top inner wall of the top of the mounting tube, the top of the mounting tube is fixedly connected with a through hole, the top of the through hole is fixedly connected with a mounting rod, the side of the mounting rod is movably connected with a rotating rod through a pin, the top of the sealing plug is fixedly connected with a second push rod, the top of the second push rod is movably connected with the side of the rotating rod, the control mechanism includes a mounting column, the side of the mounting column is fixedly connected with the side of the mounting tube, the side inner wall of the side of the mounting column is movably connected with a movable block, the top of the movable block is fixedly connected with a third push rod, the top of the third push rod is movably connected with the side of the rotating rod, the side of the mounting column is provided with a sliding groove, and the first adjusting mechanism includes a slider, and the side of the slider is movably connected to the side of the sliding groove.

[0006] Furthermore, a sealing ring is fixedly connected to the side surface of the sealing plug, and the side surface of the sealing ring is movably connected to the inner wall of the side surface of the mounting tube.

[0007] Furthermore, a mounting groove is provided on the side of the slider, a buffer spring is fixedly connected to the side of the mounting groove, a touch switch is fixedly connected to the side of the buffer spring, a return spring is fixedly connected to the side of the mounting groove, and a pressure block is fixedly connected to the side of the return spring.

[0008] Furthermore, a roller is movably sleeved on the side surface of the movable block corresponding to the position of the pressing block, and an arc head is provided on the side surface of the pressing block.

[0009] Furthermore, a mounting block is fixedly connected to the side of the mounting column, a threaded rod is movably sleeved on the bottom end of the mounting block, the side of the threaded rod is threadedly connected to the side of the slider, the bottom end of the mounting block is fixedly connected to a motor, and the output shaft of the motor is fixedly connected to the bottom end of the threaded rod.

[0010] Furthermore, a mounting box is fixedly connected to the side of the mounting cylinder, a sliding resistor is fixedly connected to the inner wall of the side of the mounting box, the sliding contact of the sliding resistor is fixedly connected to the current detection device through a wire, the bottom end of the current detection device is fixedly connected to a power supply through a wire, the side of the power supply is fixedly connected to the side of the sliding resistor through a wire, and a first push rod is movably connected to the top of the mounting box, the bottom end of the first push rod is fixedly connected to the sliding contact of the sliding resistor, and the top end of the first push rod is movably connected to the side of the rotating rod.

[0011] Furthermore, a second movable groove is provided on the side of the rotating rod, the side of the second movable groove is movably connected to the top of the third push rod, the top of the second push rod is movably connected to the side of the second movable groove, and a first movable groove is provided on the side of the rotating rod, and the side of the first movable groove is movably connected to the top of the first push rod.

[0012] Furthermore, a water inlet pipe is fixedly connected to the side of the evaporator body, a first solenoid valve is fixedly connected to the side of the water inlet pipe, a water outlet pipe is fixedly connected to the side of the evaporator body, and a second solenoid valve is fixedly connected to the side of the water outlet pipe.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model adjusts the positions of the first regulating mechanism and the second regulating mechanism along the side of the slide groove according to the use requirements. During the operation of automobile air, low-temperature and high-pressure refrigerant enters the interior of the evaporator body. A compressor is connected to the side of the evaporator body. The refrigerant in the evaporator body is extracted by the compressor and is in a lower pressure state. The pressure inside the evaporator body is greater than the atmospheric pressure, which moves the sealing plug upward, so that the second push rod pushes the rotating rod to rotate along the top end of the mounting rod, thereby driving the third push rod to move, so that the third push rod pushes the movable block to move along the side of the mounting column. When the pressure inside the evaporator body is too large, the sealing plug moves upward, so that the movable block moves upward, so that the movable block contacts the first regulating mechanism, so that the first regulating mechanism controls the compressor to increase power, speeds up the speed of extracting the refrigerant from the interior of the evaporator body, and reduces the pressure inside the evaporator body. When the pressure inside the evaporator body is reduced, the sealing plug moves downward, so that the movable block moves downward and contacts the second regulating mechanism, so that the second regulating mechanism controls the compressor to reduce power, increases the speed at which the compressor extracts the refrigerant in the evaporator body, and increases the pressure inside the evaporator body, which is beneficial to improving the flexibility of the equipment.

[0015] 2. The utility model drives the first push rod to move up and down when the rotating rod rotates by moving the second push rod, so that the first push rod pushes the sliding contact of the sliding resistor to move, and changes the size of the resistance in the circuit connected to the sliding resistor. The current detection device detects the current size in the circuit and converts it into the internal pressure of the evaporator body. The internal pressure value of the evaporator body is converted and sent to the car console, which is beneficial to real-time monitoring of the internal pressure of the evaporator body to avoid damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the detection mechanism structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the installation tube of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the installation box of the utility model;

[0020] Figure 5 This is a schematic diagram of the control mechanism structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the slider of the utility model;

[0022] Figure 7 It is a cross-sectional structural schematic diagram of the control mechanism of the utility model.

[0023] The accompanying drawings are marked as follows: 1. evaporator mechanism; 101. evaporator body; 102. water inlet pipe; 103. first solenoid valve; 104. water outlet pipe; 105. second solenoid valve; 2. detection mechanism; 201. mounting cylinder; 202. mounting box; 203. through hole; 204. first push rod; 205. mounting rod; 206. first movable groove; 207. second push rod; 208. rotating rod; 209. second movable groove; 210. sealing ring; 211. pressure spring; 212. sealing plug; 2 13. Sliding resistor; 214. Current detection device; 215. Power supply; 3. Control mechanism; 301. Mounting column; 302. Third push rod; 303. Slide groove; 304. Movable block; 305. Roller; 4. First adjusting mechanism; 401. Sliding block; 402. Mounting block; 403. Threaded rod; 404. Motor; 405. Pressing block; 406. Reset spring; 407. Buffer spring; 408. Mounting groove; 409. Touch switch; 410. Arc head; 5. Second adjusting mechanism. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The pressure-adjustable automobile evaporator involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0025] Reference Figures 1 to 7The utility model provides an automobile evaporator with adjustable pressure, comprising an evaporator mechanism 1, and further comprising: a detection mechanism 2, a control mechanism 3, a first adjustment mechanism 4, and a second adjustment mechanism 5. The top of the evaporator mechanism 1 is fixedly connected to the bottom of the detection mechanism 2, the side of the control mechanism 3 is fixedly connected to the side of the detection mechanism 2, the side of the first adjustment mechanism 4 is fixedly connected to the side of the control mechanism 3, the side of the second adjustment mechanism 5 is fixedly connected to the side of the control mechanism 3, the structure of the first adjustment mechanism 4 is the same as that of the second adjustment mechanism 5, the evaporator mechanism 1 comprises an evaporator body 101, the detection mechanism 2 comprises a mounting tube 201, the bottom end of the mounting tube 201 is fixedly connected to the top of the evaporator body 101, the side of the mounting tube 201 A sealing plug 212 is movably connected to the inner wall of the surface, and a pressure spring 211 is fixedly connected to the top of the sealing plug 212. The top of the pressure spring 211 is fixedly connected to the inner wall of the top of the mounting tube 201, and the top of the mounting tube 201 is fixedly connected to a through hole 203, and the top of the through hole 203 is fixedly connected to a mounting rod 205, and the side of the mounting rod 205 is movably connected to a rotating rod 208 through a pin, and the top of the sealing plug 212 is fixedly connected to a second push rod 207, and the top of the second push rod 207 is movably connected to the side of the rotating rod 208. The control mechanism 3 includes a mounting column 301, and the side of the mounting column 301 is fixedly connected to the side of the mounting tube 201. The inner wall of the side of the mounting column 301 is movably connected to a movable block 304, and the movable block 304 The top end is fixedly connected with a third push rod 302, and the top end of the third push rod 302 is movably connected to the side of the rotating rod 208. A slide groove 303 is provided on the side of the mounting column 301. The first adjusting mechanism 4 includes a slider 401, and the side of the slider 401 is movably connected to the side of the slide groove 303. According to the use requirements, the positions of the first adjusting mechanism 4 and the second adjusting mechanism 5 are adjusted along the side of the slide groove 303. During the operation of automobile air, low-temperature and high-pressure refrigerant enters the evaporator body 101. A compressor is connected to the side of the evaporator body 101. The refrigerant in the evaporator body 101 is extracted by the compressor and is in a lower pressure state. The internal pressure of the evaporator body 101 is greater than the atmospheric pressure, which moves the sealing plug 212 upward, so that the first adjusting mechanism 4 and the second adjusting mechanism 5 are adjusted. The second push rod 207 pushes the rotating rod 208 to rotate along the top of the installation rod 205, thereby driving the third push rod 302 to move, so that the third push rod 302 pushes the movable block 304 to move along the side of the installation column 301. When the internal pressure of the evaporator body 101 is too large, the sealing plug 212 moves upward to move the movable block 304 upward so that the movable block 304 contacts the first regulating mechanism 4, so that the first regulating mechanism 4 controls the compressor to increase the power, speeds up the speed of extracting the refrigerant from the inside of the evaporator body 101, and reduces the pressure in the evaporator body 101. When the internal pressure of the evaporator body 101 is reduced, the sealing plug 212 moves downward, so that the movable block 304 moves downward and contacts the second regulating mechanism 5, so that the second regulating mechanism 5 controls the compressor to reduce the power.The speed at which the compressor extracts the coolant from the evaporator body 101 is increased, so that the internal pressure of the evaporator body 101 increases.

[0026] Among them, a sealing ring 210 is fixedly connected to the side of the sealing plug 212, and the side of the sealing ring 210 is movably connected to the inner wall of the side of the installation tube 201. The sealing ring 210 is arranged between the side of the sealing ring 210 and the inner wall of the side of the installation tube 201 to improve the sealing performance of the contact position.

[0027] Among them, a mounting groove 408 is opened on the side of the slider 401, a buffer spring 407 is fixedly connected to the side of the mounting groove 408, a touch switch 409 is fixedly connected to the side of the buffer spring 407, a return spring 406 is fixedly connected to the side of the mounting groove 408, a pressure block 405 is fixedly connected to the side of the return spring 406, the side of the movable block 304 contacts the side of the pressure block 405 so that the side of the pressure block 405 contacts the side of the touch switch 409, so that the touch switch 409 sends a signal to the control center to control the compressor.

[0028] Among them, the side of the movable block 304 corresponds to the position of the pressing block 405 and is movably sleeved with a roller 305, and the side of the pressing block 405 is provided with an arc head 410. When the movable block 304 moves to the position of the pressing block 405, the roller 305 contacts the arc head 410 on the side of the pressing block 405, and the roller 305 rolls to avoid jamming between the movable block 304 and the pressing block 405.

[0029] Among them, the side of the mounting column 301 is fixedly connected with a mounting block 402, the bottom end of the mounting block 402 is movably sleeved with a threaded rod 403, the side of the threaded rod 403 is threadedly connected to the side of the slider 401, the bottom end of the mounting block 402 is fixedly connected with a motor 404, the output shaft of the motor 404 is fixedly connected to the bottom end of the threaded rod 403, the motor 404 drives the threaded rod 403 to rotate and drives the slider 401 to slide along the side of the slide groove 303 through the thread.

[0030] Among them, the side of the mounting tube 201 is fixedly connected with the mounting box 202, the side inner wall of the mounting box 202 is fixedly connected with the sliding resistor 213, the sliding contact of the sliding resistor 213 is fixedly connected with the current detection device 214 through a wire, the bottom end of the current detection device 214 is fixedly connected with the power supply 215 through a wire, the side of the power supply 215 is fixedly connected with the side of the sliding resistor 213 through a wire, the top of the mounting box 202 is movably connected with the first push rod 204, the bottom end of the first push rod 204 is fixedly connected with the sliding contact of the sliding resistor 213, the top of the first push rod 204 is movably connected with the side of the rotating rod 208, the second push rod 207 moves and drives the rotating rod 208 to rotate, driving the first push rod 204 to move up and down, so that the first push rod 204 pushes the sliding contact of the sliding resistor 213 to move, changing the size of the resistance in the circuit connected to the sliding resistor 213, the current detection device 214 detects the current size in the circuit, and converts it into the internal pressure of the evaporator body 101, and converts it into the internal pressure value of the evaporator body 101 and sends it to the car console.

[0031] Among them, a second movable groove 209 is opened on the side of the rotating rod 208, and the side of the second movable groove 209 is movably connected to the top of the third push rod 302, and the top of the second push rod 207 is movably connected to the side of the second movable groove 209. A first movable groove 206 is opened on the side of the rotating rod 208, and the side of the first movable groove 206 is movably connected to the top of the first push rod 204. The second movable groove 209 clamps the third push rod 302 and the second push rod 207, and the first movable groove 206 clamps the first push rod 204, so that when the second push rod 207 moves up and down, it pushes the rotating rod 208 to rotate along the pin at the top of the mounting rod 205, so that the second movable groove 209 drives the third push rod 302 to move up and down.

[0032] Among them, a water inlet pipe 102 is fixedly connected to the side of the evaporator body 101, a first solenoid valve 103 is fixedly connected to the side of the water inlet pipe 102, a water outlet pipe 104 is fixedly connected to the side of the evaporator body 101, a second solenoid valve 105 is fixedly connected to the side of the water outlet pipe 104, the water outlet pipe 104 is connected to the air-conditioning compressor, the water inlet pipe 102 is connected to the expansion valve, and the speed at which the coolant enters and flows out of the evaporator body 101 is controlled by the second solenoid valve 105 and the first solenoid valve 103.

[0033] The working principle of the utility model is as follows: the outlet pipe 104 is connected to the air-conditioning compressor, and the inlet pipe 102 is connected to the expansion valve. According to the use requirements, the starting motor 404 drives the threaded rod 403 to rotate and drives the slider 401 to slide along the side of the slide groove 303 through the thread, so that the slider 401 stops at a suitable position. Similarly, the second adjustment mechanism 5 is adjusted, and the first solenoid valve 103 opens the low-temperature and high-pressure coolant to enter the evaporator body 101. The coolant expands and absorbs heat inside the evaporator body 101, and the second solenoid valve 105 is opened to operate the compressor. The refrigerant in the evaporator body 101 is extracted, and the internal pressure of the evaporator body 101 is greater than the atmospheric pressure, which moves the sealing plug 212 upward, so that the second push rod 207 pushes the rotating rod 208 to rotate along the top of the mounting rod 205, so that the first movable groove 206 drives the first push rod 204 to move, so that the first push rod 204 pushes the sliding contact of the sliding resistor 213 to move, and changes the size of the resistance in the circuit connected to the sliding resistor 213. The current detection device 214 detects the size of the current in the circuit and converts it into the internal pressure of the evaporator body 101. The pressure value of the evaporator body 101 is converted into the internal pressure value of the evaporator body 101 and sent to the car console. At the same time, the second movable groove 209 drives the third push rod 302 to move, so that the movable block 304 slides along the inner wall of the side of the mounting column 301. When the internal pressure of the evaporator body 101 is high, the sealing plug 212 moves upward to move the movable block 304 upward to make the movable block 304 contact with the pressing block 405, and the side of the movable block 304 contacts with the side of the pressing block 405, so that the side of the pressing block 405 contacts with the side of the touch switch 409, so that the touch switch 409 sends a signal. The signal is sent to the control center to control the compressor, so that the touch switch 409 controls the compressor to increase the power, speeds up the speed of extracting the coolant from the evaporator body 101, and reduces the pressure in the evaporator body 101. When the pressure in the evaporator body 101 is reduced, the sealing plug 212 moves downward, causing the movable block 304 to move downward and contact the second regulating mechanism 5, so that the second regulating mechanism 5 controls the compressor to reduce the power, increases the speed at which the compressor extracts the coolant from the evaporator body 101, and increases the pressure in the evaporator body 101.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile evaporator with adjustable pressure, comprising an evaporator mechanism (1), characterized in that: Also includes: The detection mechanism (2), the control mechanism (3), the first adjustment mechanism (4) and the second adjustment mechanism (5), the top of the evaporator mechanism (1) is fixedly connected to the bottom of the detection mechanism (2), the side of the control mechanism (3) is fixedly connected to the side of the detection mechanism (2), the side of the first adjustment mechanism (4) is fixedly connected to the side of the control mechanism (3), the side of the second adjustment mechanism (5) is fixedly connected to the side of the control mechanism (3), the structure of the first adjustment mechanism (4) is fixedly connected to the second adjustment mechanism ( 5), the evaporator mechanism (1) comprises an evaporator body (101), the detection mechanism (2) comprises a mounting tube (201), the bottom end of the mounting tube (201) is fixedly connected to the top end of the evaporator body (101), a sealing plug (212) is movably connected to the inner wall of the side surface of the mounting tube (201), the top end of the sealing plug (212) is fixedly connected to a pressure spring (211), the top end of the pressure spring (211) is fixedly connected to the inner wall of the top end of the mounting tube (201), and the sealing plug (212) is fixedly connected to the inner wall of the top end of the mounting tube (201). The top end of the installation cylinder (201) is provided with a through hole (203), the top end of the through hole (203) is fixedly connected to a mounting rod (205), the side of the mounting rod (205) is movably connected to a rotating rod (208) via a pin, the top end of the sealing plug (212) is fixedly connected to a second push rod (207), the top end of the second push rod (207) is movably connected to the side of the rotating rod (208), the control mechanism (3) comprises a mounting column (301), the side of the mounting column (301) is movably connected to the mounting rod (208), and the mounting rod (205) is fixedly connected to the top end of the sealing plug (212). The side of the mounting cylinder (201) is fixedly connected, the inner wall of the side of the mounting column (301) is movably connected with a movable block (304), the top of the movable block (304) is fixedly connected with a third push rod (302), the top of the third push rod (302) is movably connected with the side of the rotating rod (208), the side of the mounting column (301) is provided with a slide groove (303), and the first adjustment mechanism (4) includes a slider (401), and the side of the slider (401) is movably connected with the side of the slide groove (303).

2. The pressure-adjustable automobile evaporator according to claim 1, characterized in that: A sealing ring (210) is fixedly connected to the side of the sealing plug (212), and the side of the sealing ring (210) is movably connected to the inner wall of the side of the installation cylinder (201).

3. The pressure-adjustable automobile evaporator according to claim 1, characterized in that: A mounting groove (408) is provided on the side of the slider (401), a buffer spring (407) is fixedly connected to the side of the mounting groove (408), a touch switch (409) is fixedly connected to the side of the buffer spring (407), a return spring (406) is fixedly connected to the side of the mounting groove (408), and a pressure block (405) is fixedly connected to the side of the return spring (406).

4. The pressure-adjustable automobile evaporator according to claim 3, characterized in that: The side surface of the movable block (304) is movably sleeved with a roller (305) corresponding to the position of the pressing block (405), and the side surface of the pressing block (405) is provided with an arc head (410).

5. The pressure-adjustable automobile evaporator according to claim 3, characterized in that: The side of the mounting column (301) is fixedly connected to a mounting block (402), the bottom end of the mounting block (402) is movably sleeved with a threaded rod (403), the side of the threaded rod (403) is threadedly connected to the side of the slider (401), the bottom end of the mounting block (402) is fixedly connected to a motor (404), and the output shaft of the motor (404) is fixedly connected to the bottom end of the threaded rod (403).

6. The pressure-adjustable automobile evaporator according to claim 1, characterized in that: The side of the installation tube (201) is fixedly connected to an installation box (202), the inner wall of the side of the installation box (202) is fixedly connected to a sliding resistor (213), the sliding contact of the sliding resistor (213) is fixedly connected to a current detection device (214) via a wire, the bottom end of the current detection device (214) is fixedly connected to a power source (215) via a wire, the side of the power source (215) is fixedly connected to the side of the sliding resistor (213) via a wire, the top of the installation box (202) is movably connected to a first push rod (204), the bottom end of the first push rod (204) is fixedly connected to the sliding contact of the sliding resistor (213), and the top end of the first push rod (204) is movably connected to the side of a rotating rod (208).

7. The pressure-adjustable automobile evaporator according to claim 6, characterized in that: A second movable groove (209) is provided on the side of the rotating rod (208), and the side of the second movable groove (209) is movably connected to the top of the third push rod (302), and the top of the second push rod (207) is movably connected to the side of the second movable groove (209). A first movable groove (206) is provided on the side of the rotating rod (208), and the side of the first movable groove (206) is movably connected to the top of the first push rod (204).

8. The pressure-adjustable automobile evaporator according to claim 2, characterized in that: A water inlet pipe (102) is fixedly connected to the side of the evaporator body (101), a first solenoid valve (103) is fixedly connected to the side of the water inlet pipe (102), a water outlet pipe (104) is fixedly connected to the side of the evaporator body (101), and a second solenoid valve (105) is fixedly connected to the side of the water outlet pipe (104).

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