A new energy vehicle air conditioning sensor and working method thereof

Abstract

The present invention discloses a new energy automobile air conditioning sensor, which relates to the technical field of automobile sensors, including an air conditioning evaporator and a refrigerant delivery pipe, and also includes: a refrigerant guide component, which is arranged between the air conditioning evaporator and the refrigerant delivery pipe. The present invention also discloses a working method of a new energy automobile air conditioning sensor, including the following steps: equipment installation, sensor installation, pressure protection adjustment and detection. The present invention can guide the refrigerant by setting a refrigerant guide component, and by setting a pressure sensor and a temperature sensor on both sides of the refrigerant guide component, the pressure sensor and the temperature sensor can detect the refrigerant pressure and temperature to ensure the stable operation of the automobile air conditioner, and by setting a transition chamber between the refrigerant guide component and the pressure sensor, a piston head is arranged inside the transition chamber, and the pressure sensor detects the refrigerant pressure through the piston head, thereby realizing overload protection of the pressure sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile sensors, and in particular to a new energy automobile air conditioning sensor and a working method thereof. Background Art

[0002] The automotive air conditioning pressure sensor is a conventional sensor on the car, which is used to detect the refrigerant pressure of the car air conditioner, convert the pressure value into a corresponding voltage value, and send a continuous pressure signal to the car's ECU (electronic control unit). This pressure signal can be used by the ECU to control the power of the car air conditioner compressor. However, the automotive air conditioning pressure sensors on the market currently have poor performance. When the pressure input from the refrigerant pipeline is too high, the pressure chip is easily damaged due to excessive pressure.

[0003] A car air-conditioning pressure sensor with the publication number CN219142081U includes a shell, the lower surface of the shell is fixedly connected to a medium inlet pipe, the bottom of the medium inlet pipe is penetrated to open a medium channel, and a pressure chamber is opened inside the medium inlet pipe, the top surface of the shell is fixedly connected to a port joint, the outer surface of the port joint is fixedly connected to a frame, and a round hole is penetrated to open the outer surface of the port joint, a sleeve is fixedly connected to the inner wall of the frame, a push rod is slidably connected in the sleeve, and a spring head is slidably connected to the outer surface of the sleeve. This scheme reduces the impact force when the refrigerant medium enters instantly by providing a pressure chamber, thereby protecting components such as ceramic sheets, and by providing a paddle, when it is necessary to remove the wire plug, only the paddle needs to be moved to drive the limit plate, and the limit plate compresses the spring to make the push rod completely detach from the round hole of the wire plug, so that the wire plug can be separated from the port joint by pulling the wire plug upward.

[0004] The above-mentioned technical solution realizes protection of the pressure sensor by setting a pressure-bearing chamber. However, it still cannot solve the problem of overload and damage of the pressure sensor when the refrigerant pressure is too high. Moreover, it can only detect the refrigerant pressure of the automobile air conditioner. The detection function is single and the application scope is small. At the same time, when the refrigerant pressure is overloaded, it cannot automatically release the pressure, resulting in the refrigerant continuously being output in an overloaded state, which is prone to the risk of refrigerant pipeline rupture.

[0005] Therefore, it is necessary to invent a new energy vehicle air conditioning sensor and a working method thereof to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a new energy automobile air conditioning sensor and a working method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a new energy vehicle air conditioning sensor, including an air conditioning evaporator and a refrigerant delivery pipe, and also including:

[0008] A refrigerant guide component is arranged between the air-conditioning evaporator and the refrigerant delivery pipe, the refrigerant guide component comprises a fixed seat, two liquid guide holes are penetrated in the interior of the fixed seat, extension tubes are penetrated on both sides of the fixed seat, one end of the extension tube extends to the interior of the liquid guide hole, a three-way pipe is fixedly arranged on the other end of the extension tube, a transition cover is fixedly arranged on the bottom end of the three-way pipe, a plurality of through holes are arranged around the bottom end of the transition cover, a limiting rod is penetrated in the interior of the through hole, a limiting ring is fixedly arranged on one end of the limiting rod, and the refrigerant guide component is used to guide the refrigerant;

[0009] Pressure sensors, there are two groups of pressure sensors, the two groups of pressure sensors are respectively arranged on both sides of the refrigerant guide assembly, and the pressure sensors are used to detect the refrigerant pressure;

[0010] Temperature sensor, there are two groups of temperature sensors, the two groups of temperature sensors are respectively arranged on one side of the top end of the three-way pipe on the same side, and the temperature sensor is used to detect the refrigerant temperature;

[0011] An air quality detection component, the air quality detection component is arranged at the top of the refrigerant guide component, and the air quality detection component is arranged at the rear side of the air conditioner evaporator, and the air quality detection component is used to detect the concentration of various gases in the air;

[0012] A fixing plate, which is arranged at the middle of the bottom end of the fixing seat;

[0013] There are two pressure relief components, which are symmetrically arranged at the bottom of the fixing seat, and are used for automatically relieving the refrigerant pressure.

[0014] Preferably, the pressure relief assembly includes a slide, a first elastic airbag and a second elastic airbag, a connecting plate is fixedly connected to one side of the bottom end of the fixed seat, two sliding rods are symmetrically fixedly connected between the connecting plate and the fixed plate, the slide is slidably connected between the two sliding rods, two return springs are fixedly connected between the slide and the fixed plate, a pressure relief hole is provided at the bottom of the fixed seat, the pressure relief hole is connected to the liquid guide hole on the same side, a pressure relief hole is provided through the top of the slide, the first elastic airbag is fixedly connected to one side of the connecting plate, the second elastic airbag is fixedly connected to the top of the limiting ring on the same side, and an air guide tube is provided between the first elastic airbag and the second elastic airbag.

[0015] Preferably, connecting seats are provided at both ends of the fixing seat, and two rotating joints are fixedly provided on the outer side of the connecting seat, the rotating joints correspond to the air-conditioning evaporator and the refrigerant delivery pipe, and the two rotating joints correspond to the two liquid guide holes respectively, connecting ears are fixedly provided at both ends of the connecting seat, and connecting bolts are penetrated through the inside of the connecting ears, a connecting pipe is fixedly provided at the bottom end of the transition cover, a piston head is provided inside the transition cover, a piston rod is fixedly provided at the bottom end of the piston head, and one end of the piston rod is provided inside the connecting pipe; a mounting seat is fixedly provided at the bottom end of the connecting pipe, a groove with an annular structure is provided on the lower surface of the mounting seat, and a through groove with an arc structure is provided at the bottom of the groove.

[0016] Preferably, the pressure sensor includes a sensor body, the sensor body is arranged on the outside of the fixing seat, the input end of the sensor body is arranged inside the connecting tube, and the input end of the sensor body is fitted with the bottom end of the piston rod, a socket is fixedly provided on the top of the sensor body, and a plurality of arc-shaped blocks are arranged around the outside of the socket, and the blocks correspond to the through grooves.

[0017] Preferably, a connecting ring is fixedly provided at the bottom end of the limit rod, a limit nut is movably provided at the bottom end of the connecting ring through a bearing, and the limit nut is movably provided on the outside of the connecting pipe through a thread, and two inserting pipes are fixedly provided at the top end of the fixing seat, and a positioning groove is provided on the outside of the inserting pipe;

[0018] Preferably, a pressure gauge is fixedly provided on the top end of the three-way pipe.

[0019] Preferably, the air quality detection component includes a fixed cover, which is arranged at the top of the fixed seat, and the fixed cover is arranged on the rear side of the air-conditioning evaporator, a socket is fixedly arranged at the bottom end of the fixed cover, two plug blocks are fixedly arranged at the bottom end of the socket, and the plug blocks correspond to the plug pipes, and a latch is arranged in the middle part of the outer side of the plug block, and the latch corresponds to the positioning groove.

[0020] Preferably, guide plates with a semicircular structure are fixedly provided on both sides of the interior of the fixed cover, and the two guide plates are staggered, an extension plate with an inclined structure is fixedly provided between the two guide plates, and an air quality sensor is provided through the middle of the extension plate.

[0021] Preferably, dust covers are provided on both sides of the fixed cover through threads.

[0022] The present invention also discloses a working method of a new energy vehicle air conditioning sensor, comprising the following steps:

[0023] Step 1: Equipment installation: install the refrigerant guide assembly between the air conditioner evaporator and the refrigerant delivery pipe so that the refrigerant entering and exiting the air conditioner evaporator passes through the refrigerant guide assembly;

[0024] Step 2: Install the pressure sensor, temperature sensor and air quality detection component on the outside of the refrigerant guide component respectively;

[0025] Step 3: Pressure protection adjustment: by adjusting the maximum stroke of the piston head in the refrigerant guide assembly, the maximum pressure to which the pressure sensor is subjected is protected;

[0026] Step 4, detection. When the car air conditioner is in use, the refrigerant enters the air conditioner evaporator through the refrigerant delivery pipe, and the refrigerant passes through the refrigerant guide component. The pressure sensor and temperature sensor can respectively detect the pressure and temperature of the refrigerant. At the same time, when the air conditioner is in use, the air on the rear side of the air conditioner evaporator is drawn to its front side, and the air passes through the air quality detection component, which can detect the air quality.

[0027] Technical effects and advantages of the present invention:

[0028] 1. The present invention provides a refrigerant guide component, which is provided between the air-conditioning evaporator and the refrigerant delivery pipe, and can guide the refrigerant. A pressure sensor and a temperature sensor are provided on both sides of the refrigerant guide component, and the pressure sensor and the temperature sensor can detect the refrigerant pressure and temperature to ensure the stable operation of the automobile air-conditioning. A transition chamber is provided between the refrigerant guide component and the pressure sensor, and a piston head is provided inside the transition chamber. The pressure sensor detects the refrigerant pressure through the piston head, thereby realizing overload protection of the pressure sensor.

[0029] 2. The present invention uses a slide, a first elastic airbag, a second elastic airbag, a return spring, a pressure relief hole, a pressure discharge hole and an air duct in coordination, so that when the refrigerant pressure is overloaded, the gas in the second elastic airbag will automatically flow through the air duct to the first elastic airbag, thereby pushing the slide to slide so that the pressure discharge hole and the pressure relief hole correspond to each other, and then the pressure relief hole is connected to the outside world, and the overloaded refrigerant pressure is relieved. When the refrigerant is depressurized to a normal range, the pressure relief hole will automatically return to a closed state, thereby achieving the effect of automatic pressure relief when the refrigerant pressure is overloaded, avoiding continuous output of the refrigerant in an overloaded state, reducing the risk of rupture of the refrigerant pipeline, ensuring that the compressor runs at normal power, preventing the compressor from overheating and increasing energy consumption, ensuring uniform temperature distribution inside the refrigeration system, and improving the refrigeration effect.

[0030] 3. The present invention realizes separate control and adjustment of the pressure in the two liquid conducting holes by setting two pressure relief components. When the refrigerant pressure in one liquid conducting hole is overloaded, the pressure relief component will automatically align to relieve the pressure without affecting the refrigerant pressure in the other liquid conducting hole, thereby improving the operating stability of the device.

[0031] 4. The present invention provides a refrigerant guide component, and an air quality detection component is provided above the refrigerant guide component. The air quality detection component is provided on the rear side of the air-conditioning evaporator. When the automobile air-conditioning is in use, the air on the rear side of the air-conditioning evaporator is drawn to the front side. The air passes through the air quality detection component during the flow process, thereby realizing the detection of air quality, so as to achieve the purpose of improving the detection range of the device.

[0032] 5. The present invention sets a pressure sensor, which includes a sensor body. A socket and a block are set at one end of the sensor body. The socket and the block can be installed at the bottom end of the refrigerant guide assembly by rotating and clamping. The pressure sensor can be installed and disassembled by rotating, thereby facilitating the inspection and maintenance of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 It is a schematic diagram of the structure of the refrigerant guide assembly of the present invention.

[0035] Figure 3 It is an exploded view of the refrigerant guide assembly structure of the present invention.

[0036] Figure 4 It is a schematic diagram of the fixing seat structure of the present invention.

[0037] Figure 5 It is a schematic cross-sectional view of the overall structure of the present invention.

[0038] Figure 6 It is a schematic cross-sectional view of the three-way pipe structure of the present invention.

[0039] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure in the middle.

[0040] Figure 8 It is a schematic diagram of the three-way pipe structure of the present invention.

[0041] Fig. 9 It is a schematic diagram of the structure of the pressure sensor of the present invention.

[0042] Fig.10 It is a schematic diagram of the structure of the air quality detection component of the present invention.

[0043] Fig.11 It is an exploded view of the air quality detection component structure of the present invention.

[0044] Fig.12 It is a schematic top-sectional view of the air quality detection component structure of the present invention.

[0045] Fig.13 It is a schematic diagram of the installation position of the slide of the present invention.

[0046] Fig.14 It is a schematic diagram of the installation position of the air guide tube of the present invention.

[0047] Fig.15 For the present invention Fig.13 Enlarged schematic diagram of the structure at point B in the middle.

[0048] Fig.16 For the present invention Fig.14 Enlarged schematic diagram of the structure at point C in the middle.

[0049] Fig.17 For the present invention Fig.16 Enlarged schematic diagram of the structure at point D in the middle.

[0050] In the figure: 1, air conditioning evaporator; 2, refrigerant guide assembly; 3, refrigerant delivery pipe; 4, pressure sensor; 5, temperature sensor; 6, air quality detection assembly; 7, pressure relief assembly; 8, fixing plate; 201, fixing seat; 202, connecting seat; 203, rotating joint; 204, connecting ear; 205, liquid guide hole; 206, extension pipe; 207, three-way pipe; 208, transition cover; 209, connecting pipe; 210, piston head; 211, piston rod; 212, mounting seat; 213, slot; 214, through slot; 215, through hole; 216, limit rod; 217, limit ring; 2 18. Connecting ring; 219. Limiting nut; 220. Pressure gauge; 221. Insert tube; 222. Positioning slot; 401. Sensor body; 402. Socket; 403. Block; 601. Fixing cover; 602. Socket; 603. Insert block; 604. Clip; 605. Guide plate; 606. Extension plate; 607. Air quality sensor; 608. Dust cover; 701. Slide; 702. First elastic airbag; 703. Second elastic airbag; 704. Connecting plate; 705. Slide rod; 706. Return spring; 707. Pressure relief hole; 708. Pressure discharge hole; 709. Air duct. DETAILED DESCRIPTION

[0051] 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.

[0052] Embodiment 1, the present invention provides as Figures 1 to 12 A new energy vehicle air-conditioning sensor shown includes an air-conditioning evaporator 1, a refrigerant guide component 2, a refrigerant delivery pipe 3, a pressure sensor 4, a temperature sensor 5 and an air quality detection component 6. The refrigerant guide component 2 is arranged between the air-conditioning evaporator 1 and the refrigerant delivery pipe 3. Two groups of pressure sensors 4 and temperature sensors 5 are arranged, and the two groups of pressure sensors 4 and temperature sensors 5 are arranged on both sides of the refrigerant guide component 2. The air quality detection component 6 is arranged at the top of the refrigerant guide component 2, and the air quality detection component 6 is arranged on the rear side of the air-conditioning evaporator 1.

[0053] The refrigerant guide assembly 2 includes a fixed seat 201, both ends of which are provided with connecting seats 202, and two rotating joints 203 are fixedly provided on the outer side of the connecting seat 202, and the rotating joints 203 correspond to the air-conditioning evaporator 1 and the refrigerant delivery pipe 3. Both ends of the connecting seat 202 are fixedly provided with connecting ears 204, and the inside of the connecting ears 204 is penetrated by connecting bolts, which can realize the locking of the position between the two connecting seats 202.

[0054] Specifically, two liquid conducting holes 205 are penetrated inside the fixed seat 201, and the two liquid conducting holes 205 correspond to the two rotating joints 203 respectively. Extension tubes 206 are penetrated on both sides of the fixed seat 201, and one end of the extension tube 206 extends to the inside of the liquid conducting hole 205, and a three-way pipe 207 is fixedly provided on the other end of the extension tube 206. The temperature sensor 5 is arranged at the top of the three-way pipe 207, and the temperature sensor 5 can directly detect the refrigerant temperature.

[0055] More specifically, a transition cover 208 is fixedly provided at the bottom end of the three-way pipe 207, a connecting pipe 209 is fixedly provided at the bottom end of the transition cover 208, a piston head 210 is provided inside the transition cover 208, a piston rod 211 is fixedly provided at the bottom end of the piston head 210, and one end of the piston rod 211 is provided inside the connecting pipe 209;

[0056] In addition, a mounting seat 212 is fixedly provided at the bottom end of the connecting pipe 209 , a groove 213 of an annular structure is provided on the lower surface of the mounting seat 212 , and a through groove 214 of an arc structure is provided at the bottom of the groove 213 .

[0057] Moreover, a plurality of through holes 215 are arranged around the bottom end of the transition cover 208, a limiting rod 216 is arranged inside the through hole 215, a limiting ring 217 is fixedly arranged at one end of the limiting rod 216, and the limiting ring 217 is arranged inside the transition cover 208, a connecting ring 218 is fixedly arranged at the bottom end of the limiting rod 216, a limiting nut 219 is movably arranged at the bottom end of the connecting ring 218 through a bearing, and the limiting nut 219 is movably arranged on the outside of the connecting pipe 209 through a thread, and the limiting nut 219 is rotated to make the limiting nut 219 drive the connecting ring 218 to move, and the connecting ring 218 can drive the limiting ring 217 to move through the limiting rod 216, and the limiting ring 217 can limit the movement range of the piston head 210 to achieve maximum pressure protection for the pressure sensor 4.

[0058] At the same time, a pressure gauge 220 is fixedly provided at the top of the three-way pipe 207. The setting of the pressure gauge 220 facilitates direct observation of the refrigerant pressure during equipment maintenance.

[0059] Furthermore, two inserting tubes 221 are fixedly provided at the top of the fixing seat 201 , and positioning grooves 222 are provided on the outer sides of the inserting tubes 221 . The provision of the inserting tubes 221 facilitates the installation of the air quality detection component 6 .

[0060] The pressure sensor 4 includes a sensor body 401, and the sensor body 401 is arranged on the outside of the fixed seat 201; specifically, the input end of the sensor body 401 is arranged inside the connecting tube 209, and the input end of the sensor body 401 is in contact with the bottom end of the piston rod 211, and the refrigerant can enter the transition cover 208 through the liquid guide hole 205, the extension tube 206 and the three-way pipe 207, and the refrigerant in the transition cover 208 generates pressure on the piston head 210, and the piston head 210 generates pressure on the input end of the sensor body 401 through the piston rod 211 to realize the detection of the refrigerant pressure.

[0061] More specifically, a holder 402 is fixedly provided at the top of the sensor body 401, and a plurality of arc-shaped blocks 403 are arranged around the outer side of the holder 402, and the blocks 403 correspond to the through slot 214. The blocks 403 can pass through the through slot 214 and enter the slot 213, and the blocks 403 are misaligned with the through slot 214 after rotation. At this time, the blocks 403 fix the position between the holder 402 and the mounting seat 212, and the sensor body 401 can be installed at the bottom end of the mounting seat 212.

[0062] The air quality detection component 6 includes a fixed cover 601, which is arranged at the top of the fixed seat 201, and the fixed cover 601 is arranged on the rear side of the air-conditioning evaporator 1; specifically, a socket 602 is fixedly arranged at the bottom end of the fixed cover 601, and two plug blocks 603 are fixedly arranged at the bottom end of the socket 602, and the plug blocks 603 correspond to the plug tube 221, and a latch 604 is arranged in the middle part of the outer side of the plug block 603, and the latch 604 corresponds to the positioning groove 222. The latch 604 can be deformed when squeezed, and after being inserted into the positioning groove 222, it can limit the position between the plug block 603 and the plug tube 221.

[0063] More specifically, guide plates 605 with a semicircular structure are fixedly provided on both sides of the interior of the fixed cover 601, and the two guide plates 605 are staggered, and an extension plate 606 with an inclined structure is fixedly provided between the two guide plates 605, and an air quality sensor 607 is penetrated through the middle of the extension plate 606. The guide plate 605 cooperates with the extension plate 606 to form a return gas channel inside the fixed cover 601, thereby extending the residence time of the gas in the fixed cover 601, and further ensuring the detection accuracy of the air quality sensor 607.

[0064] In addition, the air quality sensor 607 includes gas sensors such as oxygen, carbon dioxide, carbon monoxide, and formaldehyde, which can detect the concentration of various gases in the air.

[0065] Moreover, dust covers 608 are provided on both sides of the fixed cover 601 through threads, and the dust covers 608 can filter large particles of impurities in the air to ensure detection accuracy.

[0066] Embodiment 2: Although the above embodiment can achieve overload protection during use, when pressure overload occurs, the refrigerant pressure cannot be automatically relieved, resulting in the refrigerant being continuously output in an overloaded state, which is prone to the risk of refrigerant pipeline rupture. When the refrigerant is overloaded, the compressor will operate at a higher power, resulting in increased energy consumption and compressor overheating, and causing uneven temperature distribution inside the refrigeration system, affecting the refrigeration effect. Therefore, the scheme of the present invention is further improved so that when pressure overload occurs, pressure relief can be performed automatically to avoid the phenomenon of continuous overload of refrigerant pressure.

[0067] like Figure 13-Figure 17 As shown, a pressure relief assembly 7 is provided at the bottom of the fixed seat 201. There are two pressure relief assemblies 7, which are symmetrically arranged at the bottom of the fixed seat 201. The pressure relief assembly 7 and the corresponding piston head 210 are used together to realize automatic pressure relief of the refrigerant. A fixed plate 8 is fixedly connected to the middle of the bottom end of the fixed seat 201.

[0068] The pressure relief assembly 7 includes a slide 701, a first elastic airbag 702 and a second elastic airbag 703. A connecting plate 704 is fixedly connected to one side of the bottom end of the fixed seat 201. Two sliding rods 705 are symmetrically fixedly connected between the connecting plate 704 and the fixed plate 8. The slide 701 is slidably connected between the two sliding rods 705. Two return springs 706 are fixedly connected between the slide 701 and the fixed plate 8. The two return springs 706 are respectively sleeved on the outer sides of the sliding rods 705 on the same side. The bottom of the fixed seat 201 is opened. A pressure relief hole 707 is provided, and the pressure relief hole 707 is connected with the liquid guide hole 205 on the same side. A pressure relief hole 708 is opened through the top of the slide 701, and the aperture of the pressure relief hole 708 is the same as that of the pressure relief hole 707. The first elastic airbag 702 is fixedly connected to one side of the connecting plate 704 and abuts against the slide 701 on the same side. The second elastic airbag 703 is fixedly connected to the top of the limiting ring 217 on the same side, and an air guide tube 709 is provided between the first elastic airbag 702 and the second elastic airbag 703.

[0069] When the refrigerant pressure is within the normal range, the piston head 210 will not squeeze the second elastic airbag 703. At this time, under the thrust of the return spring 706, the slide 701 will slide toward the direction of the connecting plate 704 on the same side and squeeze the first elastic airbag 702, so that the gas in the first elastic airbag 702 flows through the air duct 709 to the second elastic airbag 703. At this time, the first elastic airbag 702 is in a contracted state, and the second elastic airbag 703 is in an expanded state. At this time, the pressure relief hole 708 and the pressure relief hole 707 are completely misaligned, so that the pressure relief hole 707 is in a closed state. In this state, there will be no interference with the refrigerant pressure.

[0070] When the refrigerant pressure is overloaded, the piston head 210 will squeeze the corresponding second elastic airbag 703 downward, so that the gas in the second elastic airbag 703 flows into the first elastic airbag 702 through the air guide tube 709. At this time, the first elastic airbag 702 is in an expanded state, and the second elastic airbag 703 is in a contracted state. During the gradual expansion of the first elastic airbag 702, the first elastic airbag 702 will push the corresponding slide 701 to slide along the slide rod 705 toward the middle of the fixed seat 201. During this process, the pressure relief hole 708 on the slide 701 will gradually correspond to the pressure relief hole 707, so that the pressure relief hole 707 is gradually connected to the outside world, and the connecting area is gradually increased. At this time, the overloaded refrigerant The pressure can be discharged to the outside through the pressure relief hole 707 and the pressure relief hole 708. When the first elastic airbag 702 expands to the maximum extent, the pressure relief hole 708 and the pressure relief hole 707 completely correspond. At this time, the connection area between the pressure relief hole 707 and the outside is at the maximum state, and the pressure relief rate is at the highest state, so that the refrigerant pressure can be quickly relieved. When the refrigerant pressure drops to a normal range, the piston head 210 will no longer squeeze the second elastic airbag 703. At this time, the reset spring 706 will push the slide 701 to gradually return to its initial state, and the pressure relief hole 708 and the pressure relief hole 707 are gradually misaligned until the pressure relief hole 707 is completely closed, and the gas in the first elastic airbag 702 circulates to the second elastic airbag 703 again.

[0071] Through the coordinated use of the slide 701, the first elastic airbag 702, the second elastic airbag 703, the return spring 706, the pressure relief hole 707, the pressure discharge hole 708 and the air guide tube 709, when the refrigerant pressure is overloaded, the gas in the second elastic airbag 703 will automatically flow into the first elastic airbag 702 through the air guide tube 709, thereby pushing the slide 701 to slide so that the pressure discharge hole 708 and the pressure relief hole 707 correspond to each other, and then the pressure relief hole 707 is connected to the outside world to relieve the overloaded refrigerant pressure. When the refrigerant pressure is relieved to the normal range, the pressure relief hole 707 will automatically return to a closed state. state, realizing the effect of automatic pressure relief when the refrigerant pressure is overloaded, avoiding the refrigerant from being continuously output in an overloaded state, reducing the risk of rupture of the refrigerant pipeline, ensuring that the compressor operates at normal power, preventing the compressor from overheating and increasing energy consumption, ensuring uniform temperature distribution inside the refrigeration system, and improving the refrigeration effect; by setting two pressure relief components 7, the pressures in the two liquid guide holes 205 can be controlled and adjusted separately. When the refrigerant pressure in one liquid guide hole 205 is overloaded, the pressure relief component 7 will automatically align for pressure relief, and will not affect the refrigerant pressure in the other liquid guide hole 205, thereby improving the operating stability of the device.

[0072] The present invention also provides a working method of a new energy vehicle air conditioning sensor, comprising the following steps:

[0073] Step 1: Equipment installation: install the refrigerant guide assembly 2 between the air conditioner evaporator 1 and the refrigerant delivery pipe 3, so that the refrigerant entering and exiting the air conditioner evaporator 1 passes through the refrigerant guide assembly 2;

[0074] The interface of the air conditioner evaporator 1 and the refrigerant delivery pipe 3 can be connected to the rotary joint 203 respectively, and the rotary joint 203 can be connected to the fixed seat 201 through the connecting seat 202, so as to realize the connection between the air conditioner evaporator 1, the refrigerant guide component 2 and the refrigerant delivery pipe 3;

[0075] Step 2: Install the sensors: install the pressure sensor 4, the temperature sensor 5 and the air quality detection component 6 on the outside of the refrigerant guide component 2 respectively;

[0076] The card block 403 at the top of the pressure sensor 4 can pass through the through slot 214 and be inserted into the card slot 213, so that the connection between the pressure sensor 4 and the refrigerant guide assembly 2 can be achieved;

[0077] Step 3: Pressure protection adjustment, by adjusting the maximum stroke of the piston head 210 in the refrigerant guide assembly 2, so as to protect the maximum pressure on the pressure sensor 4;

[0078] By rotating the limiting nut 219, the limiting nut 219 drives the connecting ring 218 to move, and the connecting ring 218 can drive the limiting ring 217 to move through the limiting rod 216. The limiting ring 217 can limit the movement range of the piston head 210 to achieve maximum pressure protection for the pressure sensor 4.

[0079] Step 4, detection. When the automobile air conditioner is in use, the refrigerant enters the air conditioner evaporator 1 through the refrigerant delivery pipe 3. At this time, the refrigerant passes through the refrigerant guide component 2. At this time, the pressure sensor 4 and the temperature sensor 5 can respectively detect the pressure and temperature of the refrigerant. At the same time, during the use of the air conditioner, the air on the rear side of the air conditioner evaporator 1 is drawn to its front side, and the air passes through the air quality detection component 6. The air quality detection component 6 can detect the air quality.

[0080] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. 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. A new energy vehicle air conditioning sensor, comprising an air conditioning evaporator (1) and a refrigerant delivery pipe (3), characterized in that: Also includes: A refrigerant guide component (2) is arranged between an air-conditioning evaporator (1) and a refrigerant delivery pipe (3), the refrigerant guide component (2) comprising a fixed seat (201), the interior of the fixed seat (201) being penetrated by two liquid guide holes (205), both sides of the fixed seat (201) being penetrated by extension pipes (206), one end of the extension pipe (206) extending to the interior of the liquid guide hole (205), the other end of the extension pipe (206) being fixedly provided with a three-way pipe (207), the bottom end of the three-way pipe (207) being fixedly provided with a transition cover (208), A connecting pipe (209) is fixedly provided at the bottom end of the transition cover (208), a piston head (210) is provided inside the transition cover (208), a piston rod (211) is fixedly provided at the bottom end of the piston head (210), and one end of the piston rod (211) is provided inside the connecting pipe (209); a mounting seat (212) is fixedly provided at the bottom end of the connecting pipe (209), a groove (213) of an annular structure is provided on the lower surface of the mounting seat (212), and a through groove (214) of an arc structure is provided at the bottom of the groove (213); A plurality of through holes (215) are arranged around the bottom end of the transition cover (208), a limiting rod (216) is arranged inside the through hole (215), a limiting ring (217) is fixedly arranged at one end of the limiting rod (216), and the limiting ring (217) can limit the movement range of the piston head (210), and the refrigerant guide component (2) is used to guide the refrigerant; Pressure sensors (4), the pressure sensors (4) comprising two groups, the two groups of pressure sensors (4) being respectively arranged on both sides of the refrigerant guide assembly (2), and the pressure sensors (4) being used to detect the refrigerant pressure; Temperature sensors (5), the temperature sensors (5) comprising two groups, the two groups of temperature sensors (5) being respectively arranged on one side of the top end of the three-way pipe (207) on the same side, the temperature sensors (5) being used to detect the temperature of the refrigerant; An air quality detection component (6), the air quality detection component (6) being arranged at the top end of the refrigerant guide component (2), and the air quality detection component (6) being arranged at the rear side of the air conditioner evaporator (1), and the air quality detection component (6) being used to detect the concentration of various gases in the air; A fixing plate (8) disposed in the middle of the bottom end of the fixing seat (201); A pressure relief assembly (7), wherein there are two pressure relief assemblies (7), and the two pressure relief assemblies (7) are symmetrically arranged at the bottom of the fixing seat (201), and the pressure relief assembly (7) is used to automatically relieve the refrigerant pressure; The pressure relief assembly (7) comprises a slide (701), a first elastic airbag (702) and a second elastic airbag (703); a connecting plate (704) is fixedly connected to one side of the bottom end of the fixed seat (201); two sliding rods (705) are symmetrically fixedly connected between the connecting plate (704) and the fixed plate (8); the slide (701) is slidably connected between the two sliding rods (705); two return springs (706) are fixedly connected between the slide (701) and the fixed plate (8); a pressure relief assembly (701) is provided at the bottom of the fixed seat (201); A pressure hole (707), the pressure relief hole (707) is connected to the liquid guide hole (205) on the same side, a pressure relief hole (708) is provided through the top of the slide (701), the first elastic airbag (702) is fixedly connected to one side of the connecting plate (704) and abuts against the slide (701) on the same side, the second elastic airbag (703) is fixedly connected to the top of the limiting ring (217) on the same side, and an air guide tube (709) is provided between the first elastic airbag (702) and the second elastic airbag (703); The pressure sensor (4) comprises a sensor body (401), wherein the sensor body (401) is arranged on the outside of the fixing seat (201), the input end of the sensor body (401) is arranged inside the connecting tube (209), and the input end of the sensor body (401) is fitted with the bottom end of the piston rod (211), a clamping seat (402) is fixedly arranged on the top of the sensor body (401), and a plurality of arc-shaped clamping blocks (403) are arranged around the outside of the clamping seat (402), and the clamping blocks (403) correspond to the through grooves (214).

2. A new energy vehicle air conditioning sensor according to claim 1, characterized in that: Both ends of the fixing seat (201) are provided with a connecting seat (202), and two rotating joints (203) are fixedly provided on the outer side of the connecting seat (202), and the rotating joints (203) correspond to the air-conditioning evaporator (1) and the refrigerant delivery pipe (3), and the two rotating joints (203) correspond to the two liquid guide holes (205) respectively, and both ends of the connecting seat (202) are fixedly provided with connecting ears (204), and the interior of the connecting ears (204) is penetrated by connecting bolts.

3. A new energy vehicle air conditioning sensor according to claim 1, characterized in that: A connecting ring (218) is fixedly provided at the bottom end of the limiting rod (216), a limiting nut (219) is movably provided at the bottom end of the connecting ring (218) via a bearing, and the limiting nut (219) is movably provided on the outside of the connecting pipe (209) via a thread.

4. A new energy vehicle air conditioning sensor according to claim 1, characterized in that: A pressure gauge (220) is fixedly provided at the top end of the three-way pipe (207); two inserting pipes (221) are fixedly provided at the top end of the fixing seat (201), and positioning grooves (222) are provided on the outside of the inserting pipes (221).

5. A new energy vehicle air conditioning sensor according to claim 4, characterized in that: The air quality detection component (6) comprises a fixed cover (601), the fixed cover (601) being arranged at the top end of the fixed seat (201), and the fixed cover (601) being arranged at the rear side of the air conditioner evaporator (1), a socket (602) being fixedly arranged at the bottom end of the fixed cover (601), two plug blocks (603) being fixedly arranged at the bottom end of the socket (602), and the plug blocks (603) corresponding to the plug pipe (221), and a latch (604) being arranged at the middle part of the outer side of the plug block (603), and the latch (604) corresponding to the positioning groove (222).

6. A new energy vehicle air conditioning sensor according to claim 5, characterized in that: Guide plates (605) with a semicircular structure are fixedly arranged on both sides of the interior of the fixed cover (601), and the two guide plates (605) are arranged in a staggered manner. An extension plate (606) with an inclined structure is fixedly arranged between the two guide plates (605), and an air quality sensor (607) is arranged through the middle of the extension plate (606).

7. A new energy vehicle air conditioning sensor according to claim 6, characterized in that: Dust covers (608) are provided on both sides of the fixed cover (601) via threads.

8. A working method of a new energy vehicle air conditioning sensor, applied to a new energy vehicle air conditioning sensor as claimed in claim 3, characterized in that: The following steps are involved: Step 1: Equipment installation: installing the refrigerant guide component (2) between the air-conditioning evaporator (1) and the refrigerant delivery pipe (3), so that the refrigerant entering and exiting the air-conditioning evaporator (1) passes through the refrigerant guide component (2); Step 2: installing the sensors, respectively installing the pressure sensor (4), the temperature sensor (5) and the air quality detection component (6) on the outside of the refrigerant guide component (2); Step 3: Pressure protection adjustment, by adjusting the maximum stroke of the piston head (210) in the refrigerant guide assembly (2), to protect the maximum pressure on the pressure sensor (4); Step 4: Detection: When the automobile air conditioner is in use, the refrigerant enters the air conditioner evaporator (1) through the refrigerant delivery pipe (3), and the refrigerant passes through the refrigerant guide component (2). The pressure sensor (4) and the temperature sensor (5) can respectively detect the pressure and temperature of the refrigerant. When the air conditioner is in use, the air at the rear side of the air conditioner evaporator (1) is drawn to the front side thereof, and the air passes through the air quality detection component (6). The air quality detection component (6) can detect the air quality.

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