Self-cleaning anti-clogging refrigeration injection valve

Abstract

The application relates to the technical field of injection valves, and discloses a self-cleaning anti-blocking refrigeration injection valve, which comprises a valve seat, the inside of the valve seat is provided with a nozzle, the top of the nozzle is provided with a taper pipe seat, the top end of the valve seat is threadedly connected with a nut for pressing the taper pipe seat and the nozzle, the nozzle and the taper pipe seat are fixed, the lower end of the valve seat is provided with a jet pipe group for cleaning the inside of the valve seat, the lower end of the jet pipe group is provided with a connecting pipe, one side of the valve seat is provided with a filter module group for conveying gas, the filter module group is used in cooperation with two different jet pipe groups, the gaseous refrigerant entering the valve seat can be filtered, a small amount of gaseous refrigerant can be supplied to supplement the gaseous refrigerant when the valve seat is blocked, the refrigeration system can operate, and when crystallization occurs in the jet pipe group, the jet pipe group can clean itself, the jet pipe group is further prevented from being blocked, and the smoothness of the operation of the injection valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection valves, in particular to a self-cleaning anti-blocking refrigeration injection valve. BACKGROUND

[0002] There are various types of injection valves in refrigeration systems, which are collectively referred to as refrigeration injection valves, and the core functions include flow regulation, pressure control, low-temperature performance improvement, and safety protection, among which there are electronic injection valves for expanding hot gas bypass and suction throttling control.

[0003] Currently, electronic injection valves are mostly formed by combining valve seats and valve bodies, the valve body is mainly used for injection, and the valve seat is used for expanding hot gas and suction throttling. During use, the valve seat often has the following problems:

[0004] 1. After long-term use of gaseous refrigerant, impurities will be generated inside, and the flow of these impurities driven by the gas will cause abnormal wear on the inner walls of the valve body and the valve seat, thereby causing damage to the valve body or the valve seat;

[0005] 2. Filtration of gaseous refrigerant is required, which needs to be checked and cleaned regularly, which is relatively cumbersome, and if not checked regularly, impurities will block the filter screen, so that gaseous refrigerant cannot pass through the filter screen, making it difficult for the gas-liquid fusion in the valve seat to fuse, thereby causing low sublimation efficiency of liquid refrigerant;

[0006] 3. At the moment of sublimation of liquid refrigerant, a large amount of heat will be absorbed, causing the gaseous refrigerant to condense and produce frost, which is easy to adhere to the inner wall of the valve seat, and over time, the inner wall of the valve seat will be blocked, thereby making the valve seat unable to continue to be used. SUMMARY

[0007] The technical problem solved by the present application is:

[0008] In view of the deficiencies of the prior art, the present application provides a self-cleaning anti-blocking refrigeration injection valve, which mainly solves the problems of abnormal wear on the inner walls of the valve body and the valve seat caused by the flow of impurities driven by gaseous refrigerant after long-term use, thereby causing damage to the valve body or the valve seat; the need for regular checking and cleaning of the filter screen for gaseous refrigerant filtration makes it relatively cumbersome, and if not checked regularly, impurities will block the filter screen, so that gaseous refrigerant cannot pass through the filter screen, making it difficult for the gas-liquid fusion in the valve seat to fuse, thereby causing low sublimation efficiency of liquid refrigerant; and at the moment of sublimation of liquid refrigerant, a large amount of heat will be absorbed, causing the gaseous refrigerant to condense and produce frost, which is easy to adhere to the inner wall of the valve seat, and over time, the inner wall of the valve seat will be blocked, thereby making the valve seat unable to continue to be used.

[0009] Technical solution

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solution:

[0011] The utility model provides a kind of self-cleaning anti-blocking refrigeration injection valve, including valve seat, the inside of valve seat is placed with nozzle, the top of nozzle is placed with cone pipe seat, the top of valve seat is threadedly connected with the nut that presses cone pipe seat and nozzle, nozzle and cone pipe seat are fixed, the lower end of valve seat is equipped with jet pipe group that carries out the cleaning of its own inner wall, the lower end of jet pipe group is equipped with connector, one side of valve seat is equipped with filter module group for conveying gas.

[0012] Further, the lower pipe body, the middle pipe body and the upper pipe body are of segmented structure, the lower pipe body and the upper pipe body are fixed by bolts, and the middle pipe body is butt jointed and buckled, the middle pipe body is internally provided with a built-in cleaning module for cleaning the inner walls of the upper pipe body and the lower pipe body, the circumferential inner walls of the upper pipe body and the lower pipe body are both provided with heating wires and heat-conducting plates, and the heating wires are located between the heat-conducting plates and the upper pipe body or the lower pipe body.

[0013] On the basis of the foregoing solution, the built-in cleaning module includes a mounting groove opened in the circumferential inner wall of the middle pipe body, a plurality of coils are fixedly connected in the mounting groove, a plurality of Hall sensors are mounted on the circuit board of the top inner wall of the mounting groove, the circumferential inner wall of the middle pipe body is rotatably connected with a ring-shaped frame through a bearing, a plurality of placement grooves are opened in the circumferential outer wall of the ring-shaped frame, permanent magnets are bonded in the placement grooves, and the coils can attract the permanent magnets when energized, and the circumferential inner wall of the ring-shaped frame is fixedly connected with a scraper frame in contact with the inner walls of the upper pipe body and the lower pipe body.

[0014] As further solutions of the utility model, the lower pipe body, the middle pipe body and the upper pipe body are of one-piece structure and form a jet pipe body, and the circumferential outer wall of the jet pipe body is provided with an external cleaning module for cleaning the inner wall of the jet pipe body.

[0015] Further, the external cleaning module includes a through hole opened in one side of the valve seat, a plug is placed in the through hole, a plurality of arc-shaped elastic plates are fixedly connected on one side of the plug, a plurality of threaded connectors are fixedly connected on the other side of the arc-shaped elastic plates, a goose neck pipe is fixedly connected on one side of the threaded connectors, a pull rope is tied on one side of the plug and passes through the inside of the goose neck pipe, a power assembly is arranged on one side of the jet pipe body to drive the goose neck pipe to move, a stop block is integrally formed on the other side of the plug, a guide wheel frame is fixedly connected on one side of the valve seat to guide the goose neck pipe, and a flow guide frame is integrally formed on the inner wall of one side of the valve seat.

[0016] On the basis of the foregoing scheme, the power assembly comprises a mounting frame fixed to the outer wall of the circumference of the fluidic pipe body, one side of the mounting frame is fixedly connected with an electric push rod, the moving end of the electric push rod is fixedly connected with a sliding frame sliding on the one side of the mounting frame, the goose neck pipe is fixed to the sliding frame, and the one side of the sliding frame is provided with a pulling assembly for pulling the pull rope to move.

[0017] As a further scheme of the present application, the pulling assembly comprises an electromagnet fixed to the inner wall of the bottom of the sliding frame, the top of the sliding frame is provided with two sliding holes, the sliding holes are slidingly connected with a moving frame fixed to the pull rope, the bottom outer wall of the moving frame is bonded with a magnetic block, and the electromagnet can attract the magnetic block after being electrified, and the electrification control of the electromagnet is realized through the monitoring assembly.

[0018] Further, the monitoring assembly comprises a laser sensor fixed to the inner wall of one side of the fluidic pipe body.

[0019] On the basis of the foregoing scheme, the filter module comprises an extension pipe fixed to one side of the valve seat, the circumferential inner wall of the extension pipe is fixedly connected with a plurality of guide frames, the circumferential outer wall of the guide frames is slidingly connected with a mounting ring, the circumferential inner wall of the mounting ring is provided with a filter screen, at least two symmetric springs are fixedly connected to one side of the mounting ring, and the other end of the spring is fixed to the guide frame, one side of the mounting ring is fixedly connected with a ring-shaped baffle, the extension pipe and the valve seat are fixedly connected with a gas guide pipe communicating with the inside of the extension pipe, and the gas guide pipe in the extension pipe is blocked by the ring-shaped baffle, and the circumferential inner wall of the extension pipe is provided with an alarm assembly for blocking the filter screen for detection.

[0020] As a further scheme of the present application, the alarm assembly comprises a plurality of fixed blocks fixed to the circumferential inner wall of the extension pipe, a first contact is bonded to one side of the fixed block, a plurality of second contacts are bonded to one side of the mounting ring, and the first contact and the second contact are in contact.

[0021] Advantages

[0022] Compared with the prior art, the present application provides a self-cleaning anti-blocking refrigeration injection valve, which has the following advantages:

[0023] 1、The filter module and the two different fluidic pipe groups are used in cooperation in the present application, which not only filters the gaseous refrigerant entering the valve seat, but also provides a small amount of gaseous refrigerant for replenishment when blocked, so that the refrigeration system can operate, and when crystallization occurs in the fluidic pipe group, the fluidic pipe group can perform crystallization cleaning on itself, further avoiding blockage and improving the smoothness of the operation of the injection valve.

[0024] 2、The present application is provided with an internal cleaning module, which can assist in scraping the solution on the inner wall of the upper pipe body and the lower pipe body, avoid cooling crystallization due to long-term adsorption on the inner wall, and improve the service life of the injection valve. Meanwhile, the ring-shaped frame is a hollow structure, which can minimize the impact on the flow rate in the diffuser pipe.

[0025] 3、The present application is provided with an external cleaning module, which can clean the jet pipe body and avoid the influence of the cleaning device on the internal gas flow, thereby improving the stability of the device operation.

[0026] 4、The present application is provided with a filter module, the ring-shaped baffle is separated from the air guide pipe, so that a small amount of gaseous refrigerant can enter the valve seat, avoiding the lack of gaseous refrigerant due to blockage, reducing the temperature drop rate of the liquid refrigerant, and improving the protection effect of the injection valve.

[0027] 5、The present application is provided with a power assembly, which does not need to manually push the gooseneck pipe and pull rope to move, reduces the labor of workers, and improves the use convenience of the injection valve. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a perspective structural schematic diagram of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0029] Figure 2 It is an exploded structural schematic diagram of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0030] Figure 3 It is a filter module cross-sectional structural schematic diagram of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0031] Figure 4 It is an enlarged structural schematic diagram of a fixing block of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0032] Figure 5 It is an enlarged structural schematic diagram of a mounting ring of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0033] Figure 6 It is a valve seat cross-sectional structural schematic diagram of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;

[0034] Figure 7 It is an enlarged structural schematic diagram of part A of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application; Figure 6

[0035] Figure 8 It is a connecting pipe cross-sectional structural schematic diagram of a self-cleaning anti-blocking refrigeration injection valve embodiment 1 according to the present application;​

[0036] Figure 9 This is a schematic diagram of the structure of the alarm system process of a self-cleaning and anti-clogging refrigeration injection valve embodiment 1 proposed by the present invention;

[0037] Figure 10 This is a schematic diagram of the three-dimensional structure of a self-cleaning and anti-clogging refrigeration injection valve according to embodiment 2 of the present invention;

[0038] Figure 11 This is a schematic diagram of the exploded structure of a self-cleaning and anti-clogging refrigeration injection valve according to embodiment 2 of the present invention;

[0039] Figure 12 This is an enlarged structural diagram of a cleaning module of Example 2 of a self-cleaning and anti-clogging refrigeration injection valve proposed by the present invention;

[0040] Figure 13 This is a schematic diagram of the cross-sectional structure of a gooseneck tube of Example 2 of a self-cleaning and anti-clogging refrigeration injection valve proposed by the present invention;

[0041] Figure 14 This is a schematic diagram of the cross-sectional structure of the valve seat of Example 2 of a self-cleaning and anti-clogging refrigeration injection valve proposed by the present invention;

[0042] Figure 15 This is a schematic diagram of the monitoring system flow structure of Example 2 of a self-cleaning and anti-clogging refrigeration injection valve proposed by the present invention.

[0043] In the figure: 1. valve seat; 2. jet tube assembly; 201. upper tube body; 202. lower tube body; 203. middle tube body; 204. jet tube body; 3. connecting pipe; 4. filter module; 401. extension tube; 402. mounting ring; 403. annular baffle; 404. guide frame; 405. spring; 406. air guide tube; 407. filter screen; 408. fixing block; 409. first contact; 410. second contact; 5. nut; 6. nozzle; 7. cone tube seat; 8. heating wire; 9. external cleaning module; 901. mounting frame; 9 02. Electric push rod; 903. Slide; 904. Electromagnet; 905. Magnetic block; 906. Moving frame; 907. Gooseneck; 908. Guide wheel frame; 909. Plug; 910. Pull rope; 911. Arc-shaped elastic plate; 912. Stop block; 913. Through hole; 914. Guide frame; 915. Laser sensor; 10. Heat conduction plate; 11. Built-in cleaning module; 1101. Mounting slot; 1102. Ring frame; 1103. Scraper frame; 1104. Permanent magnet; 1105. Coil; 1106. Hall sensor. DETAILED DESCRIPTION

[0044] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0045] The numbers of components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in the present application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] In the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0047] Example 1

[0048] Reference Figures 1-9The utility model provides a kind of self-cleaning anti-blocking refrigeration injection valve, including valve seat 1, nozzle 6 is placed in the inside of valve seat 1, the top of nozzle 6 is placed with cone pipe seat 7, the nut 5 of valve seat 1 top end is screwed and is pressed with the nozzle 6 of cone pipe seat 7, nozzle 6 and cone pipe seat 7 are fixed, the lower end of valve seat 1 is equipped with the jet pipe group 2 that carries out cleaning to itself inside, the lower end of jet pipe group 2 is equipped with connector 3, one side of valve seat 1 is equipped with the filter module group 4 for conveying gas, when using, connect cone pipe seat 7 and connector 3 to refrigeration pipeline, make high-temperature high-pressure liquid refrigerant from cone pipe seat 7 into nozzle 6, and spray from nozzle 6, according to venturi effect, high-speed sprayed refrigerant can reduce pressure, to attract low-temperature low-pressure gaseous refrigerant to flow to valve seat 1, to mix in jet pipe group 2, flow rate reduces, kinetic energy is converted into pressure energy, realizes the pressure boost and temperature regulation of refrigerant, filter module group 4 can filter gaseous refrigerant into valve seat 1, while a small amount of gaseous refrigerant can be provided to supplement when blocking, so that refrigeration system can operate, avoid its blockage, jet pipe group 2 can also clean itself when crystallization in jet pipe group 2, further avoid its blockage, improve the fluency of injection valve operation.

[0049] In order to form a complete diffuser pipe, the jet pipe group 2 in the utility model includes an upper pipe body 201 fixed to the lower end of the valve seat 1, the bottom of the upper pipe body 201 is provided with a middle pipe body 203, the bottom of the middle pipe body 203 is provided with a lower pipe body 202, and the lower pipe body 202 and the upper pipe body 201 are fixed by bolts, the middle pipe body 203 is provided with an internal cleaning module 11 for cleaning the inner walls of the upper pipe body 201 and the lower pipe body 202, the circumferential inner walls of the upper pipe body 201 and the lower pipe body 202 are provided with heating wires 8 and heat-conducting plates 10, and the heating wires 8 are located between the heat-conducting plates 10 and the upper pipe body 201 or the lower pipe body 202, and when the heating wires 8 are started, the crystals adhered to the upper pipe body 201 and the lower pipe body 202 can be dissolved, so as to avoid the crystallization on the surfaces of the upper pipe body 201 and the lower pipe body 202, and the combination of the upper pipe body 201, the lower pipe body 202 and the middle pipe body 203 forms a complete diffuser pipe, which can convert the kinetic energy of the mixed fluid into pressure energy again, reduces the flow rate and increases the pressure through the gradually expanding structure, so as to realize the recovery of high energy and improve the utilization rate of energy.

[0050] In order to clean the inside of the diffuser pipe during the operation of the device, the built-in cleaning module 11 in the application includes a mounting groove 1101 opened in the circumferential inner wall of the middle pipe body 203, a plurality of coils 1105 are fixed in the mounting groove 1101 by bolts, a plurality of Hall sensors 1106 are arranged on the circuit board arranged on the top inner wall of the mounting groove 1101, the model of the Hall sensor 1106 is H49E, the circumferential inner wall of the middle pipe body 203 is rotationally connected with a ring-shaped frame 1102 through a bearing, a plurality of placement grooves are opened in the circumferential outer wall of the ring-shaped frame 1102, permanent magnets 1104 are bonded in the placement grooves, and the coils 1105 can attract the permanent magnets 1104 when energized, the circumferential inner wall of the ring-shaped frame 1102 is fixed with a scraper frame 1103 in contact with the inner walls of the upper pipe body 201 and the lower pipe body 202 by bolts, the plurality of coils 1105 drive the rotation of the ring-shaped frame 1102 through the control system, when the coils 1105 are energized, a magnetic field is generated to attract the permanent magnets 1104 on the ring-shaped frame 1102, thereby driving the ring-shaped frame 1102 to rotate, thereby driving the scraper frame 1103 to rotate, the scraper frame 1103 scrapes and cleans the inner walls of the upper pipe body 201 and the lower pipe body 202, which can assist in scraping the solution on the inner walls of the upper pipe body 201 and the lower pipe body 202, avoiding long-term adsorption on the inner wall to cool and crystallize, improving the service life of the injection valve, and the ring-shaped frame 1102 is a hollow structure, which can minimize the impact on the flow rate in the diffuser pipe.

[0051] The control system includes a power drive module, a sensor module and a control core, the power drive module is composed of six power transistors to form a three-phase full-bridge inverter circuit, which is divided into an upper arm and a lower arm, and the three-phase winding is sequentially energized by alternating conduction, that is, the coils 1105 are sequentially energized; the sensor module is a Hall sensor 1106; the control core is a single-chip microcomputer, model MB95F634KPMC, which integrates a PWM generation module, an ADC conversion module and a logic control unit, responsible for processing sensor signals, executing control algorithms and outputting drive signals, the power drive module, the sensor module and the control core cooperate to control the energization and de-energization of the coils 1105, thereby driving the rotation of the ring-shaped frame 1102.

[0052] In order to filter and transport the gaseous refrigerant, the filtering module 4 comprises an extension pipe 401 fixed on one side of the valve seat 1, a plurality of guide frames 404 welded on the circumferential inner wall of the extension pipe 401, a mounting ring 402 slidably connected with the circumferential outer wall of the plurality of guide frames 404, a filter screen 407 arranged on the circumferential inner wall of the mounting ring 402, at least two symmetrical springs 405 fixed on one side of the mounting ring 402 by bolts, and the other end of the spring 405 is fixed with the guide frame 404, the spring 405 can keep the mounting ring 402 in the initial position under the condition of no force, the ring-shaped baffle 403 is welded on one side of the mounting ring 402, the gas guide pipe 406 communicated with the inside of the extension pipe 401 is fixed between the extension pipe 401 and the valve seat 1, and the gas guide pipe 406 located in the extension pipe 401 is blocked by the ring-shaped baffle 403, the filter screen 407 is arranged on the circumferential inner wall of the extension pipe 401 to block the alarm assembly for detection, the liquid refrigerant sprayed by the nozzle 6 can attract low-temperature and low-pressure gaseous refrigerant to flow into the valve seat 1 according to the Venturi effect, when the filter screen 407 is blocked, the negative pressure can attract the filter screen 407 and the mounting ring 402 to move to the valve seat 1, so that the ring-shaped baffle 403 is separated from the gas guide pipe 406, and then the low-temperature and low-pressure refrigerant enters the valve seat 1 from the gas guide pipe 406, and then a small amount of gaseous refrigerant enters the valve seat 1, so as to avoid no gaseous refrigerant due to blockage, reduce the temperature drop rate of the liquid refrigerant, and improve the protection effect of the injection valve.

[0053] In order to alarm when the external pipe is blocked, the alarm assembly comprises a plurality of fixed blocks 408 fixed on the circumferential inner wall of the extension pipe 401, a first contact 409 bonded on one side of the fixed block 408, a plurality of second contacts 410 bonded on one side of the mounting ring 402, and the first contact 409 and the second contact 410 are in contact, and the alarm system is used for reminding.

[0054] The alarm system comprises a detection module, a display screen and a data processing module, the detection module collects whether the first contact 409 and the second contact 410 are in contact, and transmits the collected data to the data processing module, the data processing module processes the collected data, generates an execution signal of the processing result, and transmits the execution signal to the display screen.

[0055] The data processing module analysis steps are as follows:

[0056] The first contact 409 and the second contact 410 in the detection module are judged whether they are in contact, if they are in contact, the signal is transmitted to the display screen, so that the display screen displays that the system is normal, if they are not in contact, the signal is transmitted to the display screen, so that the display screen displays that the gaseous refrigerant is blocked.

[0057] The application is used in the following steps:

[0058] S1: connecting the cone seat 7 and the connecting pipe 3 to the refrigerant pipeline, so that the high-temperature and high-pressure liquid refrigerant enters the nozzle 6 from the cone seat 7 and is sprayed out of the nozzle 6, according to the Venturi effect, the high-speed sprayed refrigerant will reduce the pressure, thereby attracting the low-temperature and low-pressure gaseous refrigerant to flow into the valve seat 1, and then mixing in the jet pipe group 2, the flow rate is reduced, and the kinetic energy is converted into pressure energy, so as to realize the pressure boosting and temperature adjustment of the refrigerant;

[0059] S2: periodically energize the coil 1105 in sequence through the control system, the energization of the coil 1105 generates a magnetic field, thereby attracting the permanent magnet 1104 on the ring-shaped frame 1102, and then driving the ring-shaped frame 1102 to rotate, thereby driving the scraper frame 1103 to rotate, and the scraper frame 1103 scrapes and cleans the inner walls of the upper pipe body 201 and the lower pipe body 202, and the cleaned crystals are taken out of the valve seat 1 by the sprayed gas-liquid mixture;

[0060] S3: when the filter screen 407 is blocked, the negative pressure will attract the filter screen 407 and the mounting ring 402 to move to the valve seat 1 together, so that the ring-shaped baffle 403 is separated from the contact with the air guide pipe 406, thereby enabling the low-temperature and low-pressure refrigerant to enter the valve seat 1 from the air guide pipe 406, and a small amount of gaseous refrigerant enters the valve seat 1, avoiding no gaseous refrigerant due to blockage, reducing the temperature drop rate of the liquid refrigerant, and improving the protection effect of the injection valve.

[0061] Embodiment 2

[0062] Reference Figures 10-15 The jet pipe group 2 includes a jet pipe body 204 fixed at the lower end of the valve seat 1, the circumferential outer wall of the jet pipe body 204 is provided with an external cleaning module 9 for cleaning the inner wall of the jet pipe body 204, the jet pipe body 204 is a complete diffuser pipe, both ends are trumpet-shaped, and the middle is straight cylindrical, which can convert the kinetic energy of the mixed fluid into pressure energy again, reduce the flow rate through the gradually expanding structure, and improve the pressure, thereby realizing the recovery of high energy and improving the utilization rate of energy.

[0063] In order to avoid the influence on the operation of the injection valve and also can not disassembly cleaning, the external cleaning module 9 in the application includes a through hole 913 opened on one side of the valve seat 1, a plug 909 is placed in the through hole 913, a plurality of arc-shaped elastic plates 911 are welded on one side of the plug 909, the arc-shaped elastic plates 911 are made of elastic metal material, preferably copper-based alloy, a plurality of air bags are arranged in the arc-shaped elastic plates 911 and fixed with the plug 909 and the threaded joint, the air bags are distributed in staggered positions, the air bags are in strip shape in the initial state, a threaded joint is welded on the other side of the arc-shaped elastic plates 911, a goose neck pipe 907 is fixed on one side of the threaded joint through thread, a pull rope 910 is tied on one side of the plug 909 and passes through the inside of the goose neck pipe 907, one side of the jet pipe body 204 is provided with a power assembly for driving the goose neck pipe 907 to move, the other side of the plug 909 is integrally formed with a stop block 912, and the stop block 912 is in contact with the inner wall of the valve seat 1, one side of the valve seat 1 is welded with a guide wheel frame 908 for guiding the goose neck pipe 907, and one side of the inner wall of the valve seat 1 is integrally formed with a flow guide frame 914. The goose neck pipe 907, the pull rope 910 and the arc-shaped elastic plates 911 are driven to move together by the power assembly, so that the stop block 912 is separated from the inner wall of the valve seat 1, and the stop block 912 drives the plug 909 and the arc-shaped elastic plates 911 to move downward under the guidance of the flow guide frame 914, so that the center part of the arc-shaped elastic plates 911 moves to the bottom end of the jet pipe body 204, the pull rope 910 is pulled, so that the plug 909 extrudes the arc-shaped elastic plates 911 to deform, and the circumferential outer side of the arc-shaped elastic plates 911 is in contact with the inner wall of the jet pipe body 204, and the air bags are compressed to be flat, filling the gap of the arc-shaped elastic plates 911. The pull rope 910, the arc-shaped elastic plates 911 and the plug 909 are driven to move by the power assembly, so as to remove the crystals on the inner wall. After the removal is completed, the pull rope 910, the arc-shaped elastic plates 911 and the plug 909 are reset, so as to block the through hole 913, the stop block 912 blocks the through hole 913, so as to make the inside in a sealed state, which can realize the cleaning of the jet pipe body 204 and avoid the influence of the cleaning device on the internal gas flow, thereby improving the stability of the device operation.

[0064] In order to drive the pull rope 910 and the goose neck pipe 907 to move simultaneously, the power assembly in the application comprises a mounting frame 901 fixed on the outer wall of the circumference of the fluid pipe body 204, the outer wall of one side of the mounting frame 901 is fixed with an electric push rod 902 through bolts, the moving end of the electric push rod 902 is fixed with a sliding frame 903 which slides on the outer wall of one side of the mounting frame 901 through bolts, and the goose neck pipe 907 is fixed with the sliding frame 903, one side of the sliding frame 903 is provided with a pulling assembly which pulls the pull rope 910 to move, the electric push rod 902 is started, the electric push rod 902 is retracted, thereby driving the sliding frame 903 to move on the mounting frame 901, and further driving the goose neck pipe 907 to move, so as to achieve the purpose of driving the pull rope 910 and the goose neck pipe 907 to move simultaneously, without manually pushing the goose neck pipe 907 to move, the labor of workers is reduced, and the use convenience of the injection valve is improved.

[0065] In order to deform the arc-shaped elastic plate 911, the pulling assembly in the application comprises an electromagnet 904 fixed on the inner wall of the bottom of the sliding frame 903, the model of the electromagnet 904 is KK-P40, the top of the sliding frame 903 is provided with two sliding holes, the sliding holes are slidably connected with a moving frame 906 fixed with the pull rope 910, the bottom outer wall of the moving frame 906 is bonded with a magnetic block 905, and the electromagnet 904 can attract the magnetic block 905 after being electrified, and the electrification control of the electromagnet 904 is realized through the monitoring assembly, the electromagnet 904 generates magnetism after being electrified, thereby attracting the magnetic block 905 to move to the electromagnet 904, and further driving the moving frame 906 to move downward, thereby driving the pull rope 910 and the plug 909 to move, and further driving the plug 909 to press and deform the arc-shaped elastic plate 911, without manually pulling the pull rope 910 to move, the labor of workers is further reduced, and the use convenience of the injection valve is further improved.

[0066] In order to realize the automatic control of the electromagnet 904 and the electric push rod 902, the detection assembly in the application comprises a laser sensor 915 fixed on the inner wall of one side of the fluid pipe body 204, the model of the laser sensor 915 is 3A-QUAD, and the laser sensor 915 is controlled through a monitoring system.

[0067] The monitoring system comprises a monitoring module, an execution module and a data processing module, wherein the monitoring module is used for detecting the crystallization in the fluid pipe body 204, transmitting the monitoring data to the data processing module, processing the monitoring data, and transmitting the processed monitoring data to the execution module for execution.

[0068] The analysis steps of the data processing module are as follows:

[0069] Step one: the laser sensor 915 in the monitoring module judges the thickness of the inner wall of the fluid pipe body 204, if the thickness exceeds 2mm, a programming signal is generated, and if the thickness does not exceed 2mm, no signal is generated.

[0070] The execution operation of the execution module is as follows:

[0071] Step one: when the execution module receives the signal, it starts the electric push rod 902 in turn, shrinks, energizes the electromagnet 904, starts the electric push rod 902 to lengthen, de-energizes the electromagnet 904, and starts the electric push rod 902 to lengthen.

[0072] Wherein the electromagnet 904, the electric push rod 902 and the laser sensor 915 are all general standard electrical appliances or electrical appliances known to those skilled in the art, the structure and principle of which can be known by technical personnel through technical manual or through conventional experimental method, and will not be described in detail here.

[0073] The application is divided into the following steps when in use:

[0074] S1: the electric push rod 902 is controlled to shrink through the monitoring system, so as to drive the sliding frame 903 to move on the mounting frame 901, and then drive the gooseneck pipe 907 to move, so as to drive the pull rope 910 and the gooseneck pipe 907 to move at the same time;

[0075] S2: the electromagnet 904 is energized to generate magnetism, so as to attract the magnetic block 905 to move to the electromagnet 904, and then pull the moving frame 906 to move downward, so as to pull the pull rope 910 and the plug 909 to move, and then make the plug 909 extrude the arc-shaped elastic plate 911 to bend and deform, so that the arc-shaped elastic plate 911 is attached to the inner wall of the jet pipe body 204, and the air bag is compressed to be flat, filling the gap of the arc-shaped elastic plate 911;

[0076] S3: the electric push rod 902 is started to lengthen, and the electric push rod 902 drives the pull rope 910 and the arc-shaped elastic plate 911 and the plug 909 to move, and then removes the crystals on the inner wall;

[0077] S4: after removal, the electromagnet 904 is de-energized, the arc-shaped elastic plate 911 will reset to push the pull rope 910 and the plug 909 to reset, and the electric push rod 902 is continuously started to lengthen, the electric push rod 902 drives the pull rope 910 and the arc-shaped elastic plate 911 and the plug 909 to move, so as to block the through hole 913, the block 912 blocks the through hole 913, and then the inside is in a sealed state, which can realize cleaning of the jet pipe body 204 and avoid the influence of the cleaning device on the internal gas flow, so as to improve the stability of the device operation.

[0078] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0079] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A self-cleaning and anti-clogging refrigeration injection valve, comprising a valve seat (1), characterized in that: A nozzle (6) is placed inside the valve seat (1), a conical tube seat (7) is placed on the top of the nozzle (6), a nut (5) is threadedly connected to the top of the valve seat (1) to press the conical tube seat (7) and the nozzle (6), and the nozzle (6) and the conical tube seat (7) are fixed, and a jet tube group (2) for cleaning its own inner wall is provided at the lower end of the valve seat (1), the jet tube group (2) includes an upper tube body (201) fixed to the lower end of the valve seat (1), a middle tube body (203) is provided at the bottom of the upper tube body (201), and a lower tube body (202) is provided at the bottom of the middle tube body (203), and a connecting pipe (3) is provided at the lower end of the jet tube group (2), and a filter module (4) for conveying gas is provided on one side of the valve seat (1); The lower tube body (202), the middle tube body (203) and the upper tube body (201) are of segmented structure. The lower tube body (202) and the upper tube body (201) are fixed to each other by bolts, and the middle tube body (203) is butt-jointed. The middle tube body (203) is provided with a built-in cleaning module (11) for cleaning the inner walls of the upper tube body (201) and the lower tube body (202). The circumferential inner walls of the upper tube body (201) and the lower tube body (202) are both provided with a heating wire (8) and a heat conducting plate (10), and the heating wire (8) is located between the heat conducting plate (10) and the upper tube body (201) or the lower tube body (202). The built-in cleaning module (11) comprises a mounting groove (1101) provided on the inner circumferential wall of the middle tube body (203), a plurality of coils (1105) being fixedly connected in the mounting groove (1101), a plurality of Hall sensors (1106) mounted on the circuit board thereof being provided on the top inner wall of the mounting groove (1101), an annular frame (1102) being rotatably connected to the inner circumferential wall of the middle tube body (203) via a bearing, a plurality of placement grooves being provided on the outer circumferential wall of the annular frame (1102), permanent magnets (1104) being bonded in the placement grooves, and the coils (1105) being able to attract the permanent magnets (1104) when energized, and a scraper frame (1103) being fixedly connected to the inner circumferential wall of the annular frame (1102) and being in contact with the inner walls of the upper tube body (201) and the lower tube body (202); The filter module (4) comprises an extension tube (401) fixed to one side of the valve seat (1), a plurality of guide frames (404) are fixedly connected to the circumferential inner wall of the extension tube (401), a mounting ring (402) is slidably connected to the circumferential outer wall of the plurality of guide frames (404), a filter screen (407) is provided on the circumferential inner wall of the mounting ring (402), and at least two symmetrical springs (405) are fixedly connected to one side of the mounting ring (402), and the springs (405) are The other end is fixed to the guide frame (404), and an annular baffle (403) is fixedly connected to one side of the mounting ring (402). An air guide tube (406) communicating with the interior of the extension tube (401) is fixedly connected between the extension tube (401) and the valve seat (1), and the air guide tube (406) located in the extension tube (401) is blocked by the annular baffle (403). A filter screen (407) is provided on the inner wall of the extension tube (401) to block the alarm component for detection; The alarm assembly comprises a plurality of fixing blocks (408) fixed to the inner wall of the extension tube (401), a first contact (409) being bonded to one side of the fixing block (408), and a plurality of second contacts (410) being bonded to one side of the mounting ring (402), and the first contacts (409) and the second contacts (410) being in contact with each other.

2. A self-cleaning and anti-clogging refrigeration injection valve according to claim 1, characterized in that: The lower tube body (202), the middle tube body (203) and the upper tube body (201) are an integrally formed structure and form a jet tube body (204). The circumferential outer wall of the jet tube body (204) is provided with an external cleaning module (9) for cleaning the inner wall of the jet tube body (204); The external cleaning module (9) includes a through hole (913) provided on one side of the valve seat (1), a plug (909) is placed in the through hole (913), a plurality of arc-shaped elastic plates (911) are fixedly connected to one side of the plug (909), a threaded joint is fixedly connected to the other side of the plurality of arc-shaped elastic plates (911), a gooseneck tube (907) is fixedly connected to one side of the threaded joint, a pull rope (910) passing through the inside of the gooseneck tube (907) is tied to one side of the plug (909), a power assembly for driving the gooseneck tube (907) to move is provided on one side of the jet tube body (204), a stopper (912) is integrally formed on the other side of the plug (909), a guide wheel frame (908) for guiding the gooseneck tube (907) is fixedly connected to one side of the valve seat (1), and a flow guide frame (914) is integrally formed on the inner wall of one side of the valve seat (1); The power assembly comprises a mounting frame (901) fixed to the outer circumferential wall of the jet tube body (204); an electric push rod (902) is fixedly connected to the outer wall of one side of the mounting frame (901); a movable end of the electric push rod (902) is fixedly connected to a slide (903) that slides on the outer wall of one side of the mounting frame (901); a gooseneck tube (907) is fixed to the slide (903); and a pulling assembly for moving the slide (903) by pulling a pull rope (910) is provided on one side of the slide (903).

3. The self-cleaning and anti-clogging refrigeration injection valve according to claim 2, characterized in that: The pulling component includes an electromagnet (904) fixed to the inner wall of the bottom of the slide (903), two sliding holes are opened on the top of the slide (903), and a movable frame (906) fixed to the pull rope (910) is slidably connected in the sliding holes. A magnetic block (905) is adhered to the outer wall of the bottom of the movable frame (906), and the electromagnet (904) can attract the magnetic block (905) after being energized, and the energization of the electromagnet (904) is controlled by the monitoring component.

4. The self-cleaning and anti-clogging refrigeration injection valve according to claim 3, characterized in that: The monitoring component comprises a laser sensor (915) fixed on the inner wall of one side of the jet tube body (204).

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