Vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant

Abstract

The invention relates to the technical field of vehicle-mounted heat pump air conditioners, and particularly discloses a vehicle-mounted heat pump air conditioner based on a carbon dioxide refrigerant, which comprises a base, the base is arranged in a square frame shape, and a buffer device is matched with a buffer mechanism, so that when a vehicle is bumped and vibrated during running, the buffer mechanism can buffer the carbon dioxide refrigerant. When the heat pump air conditioner is in use, the mounting seat in the base shakes to drive the main body of the heat pump air conditioner to shake, at the moment, the second buffer springs and the second dampers on the connecting strips are pulled, the comprehensive damping and buffering effect is achieved, and the second buffer springs are borne by the inner side slopes of the middle base plate and the side base plates, so that elastic force in all directions is concentrated on the main body; a first buffer spring in the buffer mechanism is matched with a first damper to assist in enhancing the buffer performance, a first hinge ball and a second hinge ball are linked to enable buffer stress to act on the main body, the buffer function in any direction can be achieved, the comprehensive buffer performance is improved through the overall design, and the service life of the heat pump air conditioner main body is prolonged; and the stable running of the vehicle during running is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted heat pump air conditioners, in particular to a vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant. Background Art

[0002] With the continuous development of automobile technology, the vehicle air conditioning system plays a vital role in providing a comfortable environment for drivers and passengers. In recent years, vehicle heat pump air conditioners based on carbon dioxide refrigerants have gradually attracted attention due to their environmental protection and high efficiency. Carbon dioxide as a refrigerant has many advantages, such as low global warming potential, non-toxic and non-flammable. However, in practical applications, the existing vehicle heat pump air conditioners based on carbon dioxide refrigerants have obvious shortcomings.

[0003] For example, a Chinese patent with the announcement number "CN114738437B" discloses a vehicle-mounted solar heat pump air-conditioning unit shock-absorbing device. When the vehicle is in use, when the vehicle brakes suddenly, the vehicle speed decreases. At this time, the turntable suddenly accelerates and the restraining teeth extend to the outside of the slide groove and engage with the inner ratchet ring, thereby preventing the active magnetic plate from resetting quickly, ensuring that the active magnetic plate is close to the fixed magnetic plate, thereby ensuring the magnetic repulsion between the active magnetic plate and the fixed magnetic plate, and partially offsetting the momentum of the entire vehicle-mounted solar heat pump air-conditioning unit through the magnetic repulsion between the active magnetic plate and the fixed magnetic plate, thereby reducing the force on the lateral shock-absorbing mechanism, thereby increasing the service life of the lateral shock-absorbing mechanism;

[0004] However, when a car is driving, it is inevitable that it will be subjected to impact and stress from different directions. The bumps on the road, acceleration, deceleration, turning, etc. will cause the car to generate dynamic forces in the horizontal, vertical and various angles. However, the vehicle-mounted heat pump air conditioner in the above-mentioned prior art often only has a single-direction horizontal buffer or vertical buffer function, and lacks a multi-directional flexible buffer structure;

[0005] This single-direction buffer design cannot effectively cope with the complex and changeable impact forces during the driving of the car. When the car is subjected to multi-directional stress, the heat pump air conditioner is easily damaged due to the lack of sufficient buffering protection. This will not only affect the normal use of the air conditioner and reduce the comfort of the driver and passengers, but may also increase maintenance costs and shorten the service life of the air conditioner. Therefore, in order to improve the reliability and durability of vehicle-mounted heat pump air conditioners based on carbon dioxide refrigerants and meet the use needs of vehicles under various driving conditions, it is urgent to develop a new vehicle-mounted heat pump air conditioner structure with multi-directional buffering function. Summary of the invention

[0006] The object of the present invention is to provide a vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant to solve the problem mentioned in the above background technology that the existing heat pump air conditioner lacks multi-directional buffer protection performance.

[0007] To achieve the above-mentioned object, the present invention provides a vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant, comprising a base, the base is arranged in a square frame shape, each surface of the inner wall of the base is fixedly connected with a buffer device, the middle of the bottom of the base is fixedly connected with a buffer mechanism, one side of the buffer device is installed with a mounting seat by bolts, the top of the buffer mechanism is connected to the bottom of the mounting seat, the top of the mounting seat is installed with a chassis by bolts, the top of the chassis is fixedly installed with a heat pump air conditioner body, the front upper end of the heat pump air conditioner body is fixedly connected with an air intake guide cylinder, and the outer end of the air intake guide cylinder is installed with a dustproof mechanism;

[0008] The buffer mechanism includes a cross plate and a slot body, the cross plate is fixedly connected to the bottom of the base, the top of the cross plate is fixedly connected to the base, four first inclined surfaces are provided on the outer side of the base, the overall cross-sectional shape of the base is an isosceles trapezoid, a first buffer component is movably installed in the middle of each first inclined surface on the top of the base, the slot body is provided at the bottom of the mounting seat, a first inclined surface is also provided in the slot body, and the top of the first buffer component is connected to the first inclined surface in the slot body.

[0009] Furthermore, a connecting circular groove is provided in the middle portion of the outer side of each of the first inclined surfaces, and the first buffer component is arranged between the base and the connecting circular groove in the groove body.

[0010] Furthermore, the first buffer assembly includes a first hinged ball and a second hinged ball, the first hinged ball is rotatably connected to the inside of a connecting circular groove on the base, the second hinged ball is rotatably connected to the inside of a connecting circular groove in the groove body, and a first buffer spring is installed between the inner sides of the first hinged ball and the second hinged ball.

[0011] Furthermore, a first damper is installed between the inner sides of the first hinge ball and the second hinge ball, the first buffer spring is sleeved on the outer side of the first damper, and the overall cross-sectional shape of the groove body is also arranged in an isosceles trapezoid.

[0012] Furthermore, the buffer device includes side panels, which are fixedly connected to the upper ends of four surfaces inside the base, the upper and lower ends of the inner sides of the side panels are fixedly connected to side base panels, the middle part of the inner side of the side panels is fixedly connected to a middle base panel, the middle base panel is provided with second inclined surfaces on both sides close to the side panels, and the side of the side base panel close to the middle base panel is also provided with a second inclined surface, a second buffer component is fixedly connected between the first inclined surface and the second inclined surface, and the overall side shape of the second buffer component between the two sides of the middle base panel and the side panels is arranged in a V shape.

[0013] Furthermore, the second buffer assembly includes a third hinge ball, which is linearly arranged at equal intervals and rotatably connected to the second inclined surface of the side base plate and the second inclined surface of the middle base plate. The outer ends of the third hinge balls are fixedly connected to second buffer springs, and the outer ends of the second buffer springs are installed with fourth hinge balls. The outer ends of the second buffer springs are hingedly installed with connecting strips through the fourth hinge ball. The second buffer springs on both sides of the connecting strip are arranged in a V shape. The outer sides of the connecting strips are fixedly connected to connecting plates, and the connecting plates are connected to the outer sides of the mounting bases through bolts.

[0014] Furthermore, the overall cross-sectional shape of the side substrate is a right triangle, the overall cross-sectional shape of the middle substrate is an isosceles triangle, and the overall cross-sectional shape of the connecting strip is also an isosceles triangle.

[0015] Furthermore, a second damper is installed between the inner sides of the third hinge ball and the fourth hinge ball, and the second buffer spring is sleeved on the outer side of the second damper.

[0016] Furthermore, the dust-proof mechanism includes an annular guide rail, which is fixedly connected to the outer end of the air intake guide cylinder, and a dust-proof net is fixedly connected to the inner middle part of the annular guide rail, and the dust-proof net covers the outer side of the air intake guide cylinder. A slip ring is slidably connected inside the guide rail cavity of the annular guide rail, and a gear ring is fixedly connected to the outer side of the slip ring. A driving motor is fixedly connected to the bottom of the annular guide rail, and a gear is fixedly connected to the output end of the driving motor. The gear and the gear ring are meshingly connected, and a brush assembly is fixedly connected to the outer side of the gear ring, and the brush assembly is fit-connected to the dust-proof net on one side close to the dust-proof net.

[0017] Furthermore, the brush assembly includes a connecting frame, which is fixedly connected to a side of the gear ring away from the air intake guide cylinder, and a side of the connecting frame close to the dustproof net is fixedly connected with telescopic springs at equal intervals, and the ends of the telescopic springs are fixedly connected with cleaning brush plates, and both ends of the cleaning brush plate on the side away from the dustproof net are fixedly connected with support shafts, and the ends of the support shafts pass through the connecting frame, and the support shaft and the connecting frame are slidably connected, and a side of the cleaning brush plate close to the dustproof net is fit-connected to the outer surface of the dustproof net.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, in the present invention, by arranging a buffer device, when the vehicle encounters a bumpy road and a vibration, the mounting seat in the base is affected by gravity, driving the heat pump air conditioner body to shake, and the shaking force acts on the connecting plate and the outer connecting strip. The second buffer springs hingedly installed at both ends of the connecting strip through the fourth hinge ball and the third hinge ball adopt a movable design. No matter which direction the heat pump air conditioner body is subjected to the vibration force, the second buffer springs and the second damper on each surface of the base are pulled, and a comprehensive damping buffering effect is exerted. The second inclined surface on the inner side of the middle base plate and the side base plate receives the second buffer spring, which promotes the spring stress to offset and concentrates the elastic force on the heat pump air conditioner body in the middle of the base. After the vehicle stops, this design allows the heat pump air conditioner body to quickly restore balance and stillness; all-round buffering can be performed while the vehicle is driving, which greatly improves the comprehensive buffering performance and effectively prolongs the service life of the heat pump air conditioner body.

[0020] Secondly, in the present invention, by providing an auxiliary buffer mechanism, the buffering effect can be enhanced during use. Specifically, the vibration stress generated during vehicle driving acts on the heat pump air conditioner body, and the second buffer spring cooperates with the telescopic rotation of the third articulated ball and the fourth articulated ball to elastically suspend the heat pump air conditioner body inside the base, thereby achieving good buffering in any direction. At the same time, the bottom of the body is hinged to the first buffer spring through the first articulated ball and the second articulated ball. Each time the body is impacted, the buffering stress of the first spring and the first damper can also act on the body. The first inclined surface on the base parallel to the groove body makes the first springs perpendicular to each other, and the buffering force is utilized to the maximum extent. The second inclined surface design of the middle base plate and the side base plate is cooperated to prompt the first and second buffer springs to concentrate the elastic force on the heat pump air conditioner body, thereby further improving the overall buffering performance and effectively improving the service life of the body.

[0021] Thirdly, in the present invention, by arranging a dustproof mechanism, every time the vehicle is started, the driving motor starts to drive the gear to rotate, the gear and the gear ring are meshed for transmission, driving the slip ring to rotate in the annular guide rail, thereby prompting the gear ring to drive the connecting frame to rotate on the outside of the dustproof net, and the telescopic spring inside the connecting frame pushes the cleaning brush plate to fit tightly against the surface of the dustproof net during rotation. As the connecting frame rotates, the cleaning brush plate can fit against the outer surface of the dustproof net for cleaning and brushing, thereby removing dust and impurities. The design of the support shaft assists in supporting and reinforcing the cleaning brush plate to ensure its stable rotation and cleaning. This enables the heat pump air conditioner to have a self-cleaning dustproof function, thereby avoiding poor operation of the air conditioner filter due to dust clogging, and further improving the overall stability of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure in the present invention when viewed from above;

[0024] Figure 3 This is a schematic diagram of the front view structure of the split state in the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the present invention in a split state when viewed from above;

[0026] Figure 5 It is a schematic diagram of the buffer device and the base structure in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the buffer device in the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the buffer device in the present invention;

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the buffer device in the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the brushing component in the present invention.

[0031] In the figure: 1, base; 2, buffer device; 21, side plate; 22, side base plate; 23, middle base plate; 24, second inclined surface; 25, second buffer assembly; 251, third hinge ball; 252, second buffer spring; 253, fourth hinge ball; 254, connecting strip; 255, connecting plate; 256, second damper; 3, buffer mechanism; 31, cross plate; 32, trough; 33, base; 34, first inclined surface; 35, first buffer assembly; 351, first Articulated ball; 352, second articulated ball; 353, first buffer spring; 354, first damper; 36, connecting circular groove; 4, mounting seat; 5, chassis; 6, heat pump air conditioner main body; 7, air intake guide cylinder; 8, dustproof mechanism; 81, annular guide rail; 82, dustproof net; 83, slip ring; 84, gear ring; 85, drive motor; 86, gear; 87, brush assembly; 871, connecting frame; 872, telescopic spring; 873, cleaning brush plate; 874, support shaft. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-Figure 9In an embodiment of the present invention, a vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant includes a base 1, which is arranged in a square frame shape. Each surface of the inner wall of the base 1 is fixedly connected with a buffer device 2, and a buffer mechanism 3 is fixedly connected to the middle of the bottom of the base 1. A mounting seat 4 is installed on one side of the buffer device 2 by bolts. The top of the buffer mechanism 3 is connected to the bottom of the mounting seat 4, and the top of the mounting seat 4 is installed with a chassis 5 by bolts. A heat pump air conditioner body 6 is fixedly installed on the top of the chassis 5. An air intake guide cylinder 7 is fixedly connected to one side of the upper end of the front side of the heat pump air conditioner body 6, and a dustproof mechanism 8 is installed on the outer end of the air intake guide cylinder 7;

[0034] The buffer mechanism 3 includes a cross plate 31 and a slot body 32. The cross plate 31 is fixedly connected to the bottom of the base 1. The top of the cross plate 31 is fixedly connected to the base 33. Four first inclined surfaces 34 are provided on the outer side of the base 33. The overall cross-sectional shape of the base 33 is an isosceles trapezoid. A first buffer component 35 is movably installed in the middle of each first inclined surface 34 at the top of the base 33. The slot body 32 is opened at the bottom of the mounting seat 4. The slot body 32 also has a first inclined surface 34. The top of the first buffer component 35 is connected to the first inclined surface 34 in the slot body 32. The base 1 is in the shape of a square frame, providing a stable frame structure for the entire device. Each surface of the inner wall of the base 1 is fixedly connected to the buffer device 2, which can provide buffer protection for the heat pump air conditioner main body 6 from multiple directions. The buffer mechanism 3 in the middle of the bottom of the base 1 further enhances the buffering The cross plate 31 provides a firm support for the base 33, and the first inclined surface 34 on the outer side of the base 33 cooperates with the first inclined surface 34 in the bottom groove body 32 of the mounting seat 4, so that the first buffer component 35 installed thereon can maximize the buffering effect. No matter in which direction the vehicle is subjected to impact force during driving, the first buffer component 35 can effectively apply the buffering stress to the mounting seat 4 and the heat pump air-conditioning body 6, thereby reducing the damage to the heat pump air-conditioning caused by bumps and vibrations and extending the service life of the heat pump air-conditioning. At the same time, the chassis 5 installed on the top of the mounting seat 4 by bolts and the heat pump air-conditioning body 6 on the top of the chassis 5 are firmly connected to ensure the stability of the heat pump air-conditioning during vehicle driving. The dustproof mechanism 8 at the outer end of the air intake guide tube 7 can effectively prevent dust and other impurities from entering the heat pump air-conditioning to ensure its normal operation.

[0035] This heat pump air conditioning system adopts a high-pressure system with a pressure range of less than 20MPa. At the same time, this carbon dioxide heat pump air conditioning is suitable for cold areas, and the carbon dioxide heat pump air conditioning uses 4-5 temperature-pressure integrated sensors;

[0036] This air-conditioning system can specifically use R744 (i.e. carbon dioxide) or R134a (i.e. Freon) as the refrigerant according to application requirements. Specifically, the corresponding heat pump air-conditioning main body 6 can be selected according to specific needs. A heat pump air-conditioning main body 6 using R744 (i.e. carbon dioxide) or R134a (i.e. Freon) as the refrigerant can be installed in this device according to needs.

[0037] See also Figure 1-Figure 5 , a connecting circular groove 36 is provided in the middle part of the outer side of the first inclined surface 34, and the first buffer component 35 is arranged between the base 33 and the connecting circular groove 36 in the groove body 32. The first buffer component 35 includes a first hinge ball 351 and a second hinge ball 352. The first hinge ball 351 is rotatably connected to the inside of the connecting circular groove 36 on the base 33, and the second hinge ball 352 is rotatably connected to the inside of the connecting circular groove 36 in the groove body 32. A first buffer spring 353 is installed between the inner sides of the first hinge ball 351 and the second hinge ball 352, and a first damper 354 is installed between the inner sides of the first hinge ball 351 and the second hinge ball 352. The first buffer spring 353 is sleeved on the outer side of the first damper 354. The overall cross-sectional shape of the groove body 32 is also an isosceles trapezoid. The connecting circular groove 36 provided in the middle part of the outer side of the first inclined surface 34 provides an installation position for the first buffer component 35. The first hinge ball 351 and the second hinge ball 352 in the first buffer component 35 are respectively rotatably connected to the inside of the connecting circular groove 36 on the base 33. The inside of the connecting circular groove 36 connected to the base 33 and the groove body 32 allows the first hinge ball 351 and the second hinge ball 352 to rotate flexibly when the vehicle is subjected to impact forces in different directions during driving, thereby driving the first buffer spring 353 and the first damper 354 to play a buffering role. The first buffer spring 353 installed between the inner sides of the first hinge ball 351 and the second hinge ball 352 can produce elastic deformation when impacted to absorb the impact force, while the first damper 354 can further consume the impact energy. The two cooperate with each other to improve the buffering effect. The first buffer spring 353 is sleeved on the outer side of the first damper 354, making the structure more compact and ensuring that the two work together during the buffering process. The overall cross-sectional shape of the groove body 32 is an isosceles trapezoid, which cooperates with the shape of the base 33, so that the first buffer component 35 can effectively play a buffering role in all directions, thereby better protecting the heat pump air conditioner body 6 and extending its service life.

[0038] See also Figure 5-Figure 8The buffer device 2 includes a side plate 21, which is fixedly connected to the upper ends of the four surfaces inside the base 1, and the side base plates 22 are fixedly connected to the upper and lower ends of the inner side of the side plate 21, and the middle base plate 23 is fixedly connected to the inner middle of the side plate 21. The middle base plate 23 is provided with a second inclined surface 24 on both sides close to the side plate 21, and the side base plate 22 is also provided with a second inclined surface 24 on the side close to the middle base plate 23. A second buffer component 25 is fixedly connected between the first inclined surface 34 and the second inclined surface 24. The overall side shape of the second buffer component 25 between the two sides of the middle base plate 23 and the side plate 21 is arranged in a V shape, and the second buffer component 25 includes a third hinge ball 251, and the third hinge balls 251 are respectively arranged linearly at equal intervals and rotatably connected to the second side of the side base plate 22 On the inclined surface 24 and the second inclined surface 24 of the middle base plate 23, the outer ends of the third hinged balls 251 are fixedly connected with the second buffer springs 252, the outer ends of the second buffer springs 252 are installed with the fourth hinged balls 253, the outer ends of the second buffer springs 252 are hingedly installed with the connecting strips 254 through the fourth hinged balls 253, the second buffer springs 252 on both sides of the connecting strips 254 are arranged in a V shape, the outer side of the connecting strips 254 is fixedly connected with the connecting plates 255, the connecting plates 255 are connected to the outer side of the mounting seat 4 through bolts, the overall cross-sectional shape of the side base plate 22 is set in a right triangle, the overall cross-sectional shape of the middle base plate 23 is set in an isosceles triangle, the overall cross-sectional shape of the connecting strips 254 is also set in an isosceles triangle, the third hinged balls A second damper 256 is installed between the inner sides of 251 and the fourth hinge ball 253, and the second buffer spring 252 is sleeved on the outer side of the second damper 256. The side plate 21 is fixedly connected to the upper ends of the four surfaces inside the base 1 to provide a stable support for the side base plate 22 and the middle base plate 23. The side base plate 22 is located at the upper and lower ends of the inner side of the side plate 21, and the middle base plate 23 is located in the middle of the inner side of the side plate 21. The middle base plate 23 and the side base plate 22 are both provided with a second inclined surface 24 on both sides close to the side plate 21 to provide an installation basis for the second buffer assembly 25. The second buffer assembly 25 is fixedly connected between the first inclined surface 34 and the second inclined surface 24. The overall side shape of the second buffer assembly 25 between the two sides of the middle base plate 23 and the side plate 21 is arranged in a V shape. This structure makes Under the impact of different directions, the impact force can be more effectively dispersed and absorbed. The third hinge balls 251 in the second buffer assembly 25 are linearly arranged at equal intervals and rotatably connected to the second inclined surfaces 24 of the side base plate 22 and the middle base plate 23, so that they can be flexibly rotated when impacted, driving the second buffer spring 252 and the second damper 256 to play a buffering role. The outer end of the second buffer spring 252 is hingedly installed on the connecting strip 254 through the fourth hinge ball 253. The second buffer springs 252 on both sides of the connecting strip 254 are arranged in a V shape. The outer side of the connecting strip 254 is fixedly connected to the connecting plate 255. The connecting plate 255 is connected to the outer side of the mounting seat 4 through bolts, so that the impact force can be transmitted to the connecting strip 254 through the connecting plate 255.The connection strip 254 then transmits the shock to the second buffer spring 252 and the second damper 256, thereby achieving the shock absorption. The overall cross-sectional shape of the side substrate 22 is a right triangle, the overall cross-sectional shape of the middle substrate 23 is an isosceles triangle, and the overall cross-sectional shape of the connection strip 254 is also an isosceles triangle. This shape design makes the structure more stable and can better withstand the impact force. The second damper 256 is installed between the inner sides of the third articulated ball 251 and the fourth articulated ball 253, and the second buffer spring 252 is sleeved on the outer side of the second damper 256, so that during the shock absorption process, the second buffer spring 252 and the second damper 256 can work together to improve the shock absorption effect, better protect the heat pump air conditioner body 6, and extend its service life.

[0039] See also Figure 1-Figure 4 and Fig. 9The dust-proof mechanism 8 includes an annular guide rail 81, which is fixedly connected to the outer end of the air intake guide cylinder 7, and a dust-proof net 82 is fixedly connected to the inner middle part of the annular guide rail 81, and the dust-proof net 82 covers the outer side of the air intake guide cylinder 7. A slip ring 83 is slidably connected inside the guide rail cavity of the annular guide rail 81, and a gear ring 84 is fixedly connected to the outer side of the slip ring 83. A driving motor 85 is fixedly connected to the bottom of the annular guide rail 81, and a gear 86 is fixedly connected to the output end of the driving motor 85. The gear 86 and the gear ring 84 are meshed and connected. A brush assembly 87 is fixedly connected to the outer side of the gear ring 84, and a side of the brush assembly 87 close to the dust-proof net 82 is fitted and connected to the dust-proof net 82, and the brush assembly 87 includes a connecting frame 87. 1, the connecting frame 871 is fixedly connected to the side of the gear ring 84 away from the air inlet guide cylinder 7, and the side of the connecting frame 871 close to the dustproof net 82 is fixedly connected with telescopic springs 872 at equal intervals. The ends of the telescopic springs 872 are fixedly connected with cleaning brush plates 873. The two ends of the cleaning brush plate 873 away from the dustproof net 82 are fixedly connected with support shafts 874. The ends of the support shafts 874 pass through the connecting frame 871. The support shafts 874 and the connecting frame 871 are slidably connected. The side of the cleaning brush plate 873 close to the dustproof net 82 is fitted and connected with the outer surface of the dustproof net 82. The annular guide rail 81 is fixedly connected to the outer end of the air inlet guide cylinder 7 to provide an installation basis for the dustproof net 82 and the slip ring 83. The dustproof net 82 covers the air inlet. The outside of the air guide cylinder 7 can effectively prevent dust and other impurities from entering the heat pump air conditioner. The slip ring 83 slides inside the guide rail cavity of the annular guide rail 81 to ensure the stability of the movement. The gear ring 84 on the outside of the slip ring 83 is meshed and connected with the gear 86 at the output end of the drive motor 85, so that the drive motor 85 can drive the gear ring 84 to rotate. The brush assembly 87 on the outside of the gear ring 84 is close to the side of the dustproof net 82 and is fitted and connected to the dustproof net 82, which can clean the dustproof net 82. The connecting frame 871 in the brush assembly 87 is fixedly connected to the gear ring 84 to provide support for the telescopic spring 872 and the cleaning brush plate 873. The telescopic springs 87 fixedly connected to the connecting frame 871 are equidistantly spaced near one side of the dustproof net 82. 2. The cleaning brush plate 873 can always fit tightly with the outer surface of the dustproof net 82. The support shafts 874 fixedly connected at both ends of the cleaning brush plate 873 away from the dustproof net 82 are slidably connected with the connecting frame 871, which can ensure the stability of the cleaning brush plate 873 during movement. When the vehicle is running, the driving motor 85 is started to drive the gear ring 84 to rotate, thereby making the brush assembly 87 rotate around the dustproof net 82. The cleaning brush plate 873 continuously brushes the outer surface of the dustproof net 82 under the action of the telescopic spring 872, and promptly removes the attached dust and other impurities, thereby ensuring the air permeability of the dustproof net 82, avoiding the normal operation of the heat pump air conditioner due to dust clogging, and extending the service life of the heat pump air conditioner.

[0040] The working principle of the present invention is as follows: by arranging the buffer device 2, during the actual use of the heat pump air conditioner, when the vehicle is driving and an impact is generated due to bumps and vibrations on the road, the mounting seat 4 inside the base 1 will shake together with the heat pump air conditioner main body 6 under the influence of gravity. During the shaking process, the shaking force will pull the connecting plate 255, and a connecting strip 254 is installed on the outer side of the connecting plate 255. At this time, the second buffer springs 252 are hingedly installed at both ends of the connecting strip 254 using a fourth hinge ball 253 and a third hinge ball at equal intervals. Each second buffer spring 252 adopts an articulated movable design. This design allows the elastic force of each second buffer spring 252 to evenly act on the heat pump air conditioner main body 6 in the middle of the base 1. No matter in which direction the heat pump air conditioner main body 6 is subjected to vibration force, it will cause the base 1 to move. The second buffer springs 252 and the second damper 256 on each surface of the part are pulled. In this case, the second buffer springs 252 and the second damper 256 can cooperate to exert a comprehensive damping and buffering effect, and the second buffer springs 252 are installed on the inner sides of the middle base plate 23 and the side base plate 22 through the second inclined surface 24, so that the stress of each second buffer spring 252 is offset. In this way, the elastic force of each second buffer spring 252 can be concentrated on the heat pump air conditioner main body 6 located in the middle of the base 1. When the vehicle stops, this design can prompt the heat pump air conditioner main body 6 to quickly restore balance and stop. During the driving process of the vehicle, the heat pump air conditioner main body 6 can be buffered in various directions. Overall, its comprehensive buffering performance is further improved, which can effectively improve the service life of the entire heat pump air conditioner main body 6.

[0041] By providing a buffer mechanism 3, the auxiliary buffer device 2 can further play a buffering role during application. During the driving of the vehicle, the stress generated by the vibration will act on the heat pump air conditioner main body 6. At this time, the second buffer spring 252 cooperates with the telescopic and rotating activities of the third articulated ball 251 and the fourth articulated ball 253, so that the entire heat pump air conditioner main body 6 can be elastically suspended inside the base 1, thereby playing a better buffering role in any direction. During the buffering process, the bottom of the heat pump air conditioner main body 6 is hinged to the first buffer spring 353 at the first articulated ball 351 and the second articulated ball 352. Therefore, each time the heat pump air conditioner is subjected to impact stress, the articulated linkage of the first articulated ball 351 and the second articulated ball 352 is used to The buffer stress of each first spring and the first damper 354 can be caused to act on the heat pump air conditioner main body 6, further enhancing the buffer performance. In addition, the first inclined surface 34 on the base 33 and the first inclined surface 34 in the groove body 32 are arranged in parallel, so that each first spring can be perpendicular to the first inclined surface 34. Such a design can maximize the buffer force of the first spring and the first damper 354. At the same time, the design of the first inclined surface 34 cooperates with the design of the second inclined surface 24 of the middle base plate 23 and the side base plate 22, which can cause the first buffer spring 353 and the second buffer spring 252 to concentrate the elastic force on the heat pump air conditioner main body 6, further improving its overall buffer performance, and can more effectively improve the service life of the heat pump air conditioner main body 6.

[0042] By setting the dustproof mechanism 8, the drive motor 85 can be started every time the vehicle is turned on during use of the device, and the drive motor 85 drives the gear 86 to rotate, and the gear 86 is meshed with the gear ring 84. As the gear 86 and the gear ring 84 are meshed with each other, the slip ring 83 can be synchronously driven to rotate inside the annular guide rail 81. At this time, the gear ring 84 can drive the connecting frame 871 to rotate outside the dustproof net 82, and the telescopic spring 872 inside the connecting frame 871 can push the cleaning brush plate 873 and the dustproof net 82 when the connecting frame 871 rotates. The surface fits tightly, and with the rotation of the connecting frame 871, the cleaning brush plate 873 can be synchronously driven to fit the outer surface of the dustproof net 82 for cleaning and brushing. When dust or impurities adhere to the outer surface of the dustproof net 82, the cleaning brush plate 873 can sweep them away. The design of the support shaft 874 can assist in supporting and reinforcing the cleaning brush plate 873, prompting it to rotate stably for cleaning. In this way, the heat pump air conditioner has a self-cleaning dustproof function, which can avoid the problem of poor operation caused by the air conditioner filter being blocked by dust, and further improve the overall stability of the equipment during use.

Claims

1. A vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant, characterized in that: The invention comprises a base (1), wherein the base (1) is arranged in a square frame shape, each surface of the inner wall of the base (1) is fixedly connected to a buffer device (2), a buffer mechanism (3) is fixedly connected to the middle of the inner bottom of the base (1), a mounting seat (4) is installed on one side of the buffer device (2) by bolts, the top of the buffer mechanism (3) is connected to the bottom of the mounting seat (4), the top of the mounting seat (4) is installed on a chassis (5) by bolts, a heat pump air conditioner body (6) is fixedly installed on the top of the chassis (5), an air intake guide cylinder (7) is fixedly connected to one side of the upper front end of the heat pump air conditioner body (6), and a dustproof mechanism (8) is installed on the outer end of the air intake guide cylinder (7); The buffer mechanism (3) comprises a cross plate (31) and a slot body (32); the cross plate (31) is fixedly connected to the bottom of the base (1); the top of the cross plate (31) is fixedly connected to a base (33); four first inclined surfaces (34) are provided on the outer side of the base (33); the overall cross-sectional shape of the base (33) is arranged in an isosceles trapezoid; a first buffer component (35) is movably installed in the middle of each first inclined surface (34) at the top of the base (33); the slot body (32) is provided at the bottom of the mounting seat (4); a first inclined surface (34) is also provided in the slot body (32); the top of the first buffer component (35) is connected to the first inclined surface (34) in the slot body (32).

2. A vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 1, characterized in that: A connecting circular groove (36) is provided in the middle of the outer side of each of the first inclined surfaces (34), and the first buffer component (35) is arranged between the base (33) and the connecting circular groove (36) in the groove body (32).

3. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 2, characterized in that: The first buffer component (35) includes a first hinge ball (351) and a second hinge ball (352), wherein the first hinge ball (351) is rotatably connected to the inside of a connecting circular groove (36) on the base (33), and the second hinge ball (352) is rotatably connected to the inside of a connecting circular groove (36) in the groove body (32), and a first buffer spring (353) is installed between the inner sides of the first hinge ball (351) and the second hinge ball (352).

4. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 3, characterized in that: A first damper (354) is installed between the inner sides of the first hinge ball (351) and the second hinge ball (352), the first buffer spring (353) is sleeved on the outer side of the first damper (354), and the overall cross-sectional shape of the groove body (32) is also arranged in an isosceles trapezoidal shape.

5. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 1, characterized in that: The buffer device (2) comprises a side plate (21), the side plate (21) being fixedly connected to the upper ends of four surfaces inside the base (1), the inner upper and lower ends of the side plate (21) being fixedly connected to a side base plate (22), the inner middle portion of the side plate (21) being fixedly connected to a middle base plate (23), the middle base plate (23) being provided with a second inclined surface (24) on both sides close to the side plate (21), the side of the side base plate (22) being provided with a second inclined surface (24) on one side close to the middle base plate (23), a second buffer component (25) being fixedly connected between the first inclined surface (34) and the second inclined surface (24), and the overall side surface shape of the second buffer component (25) between both sides of the middle base plate (23) and the side plate (21) being arranged in a V-shape.

6. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 5, characterized in that: The second buffer assembly (25) comprises a third hinge ball (251), the third hinge balls (251) are linearly arranged at equal intervals and are rotatably connected to the second inclined surface (24) of the side base plate (22) and the second inclined surface (24) of the middle base plate (23), the outer ends of the third hinge balls (251) are fixedly connected to the second buffer springs (252), the outer ends of the second buffer springs (252) are installed with fourth hinge balls (253), the outer ends of the second buffer springs (252) are hingedly installed with connecting strips (254) through the fourth hinge balls (253), the second buffer springs (252) on both sides of the connecting strip (254) are arranged in a V shape, the outer side of the connecting strip (254) is fixedly connected to a connecting plate (255), and the connecting plate (255) is connected to the outer side of the mounting seat (4) through bolts.

7. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 6, characterized in that: The overall cross-sectional shape of the side base plate (22) is a right triangle, the overall cross-sectional shape of the middle base plate (23) is an isosceles triangle, and the overall cross-sectional shape of the connecting strip (254) is also an isosceles triangle.

8. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 6, characterized in that: A second damper (256) is installed between the inner sides of the third hinge ball (251) and the fourth hinge ball (253), and the second buffer spring (252) is sleeved on the outer side of the second damper (256).

9. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 1, characterized in that: The dustproof mechanism (8) comprises an annular guide rail (81), the annular guide rail (81) is fixedly connected to the outer end of the air intake guide tube (7), a dustproof net (82) is fixedly connected to the inner middle part of the annular guide rail (81), the dustproof net (82) covers the outer side of the air intake guide tube (7), a slip ring (83) is slidably connected inside the guide rail cavity of the annular guide rail (81), a gear ring (84) is fixedly connected to the outer side of the slip ring (83), a driving motor (85) is fixedly connected to the bottom of the annular guide rail (81), a gear (86) is fixedly connected to the output end of the driving motor (85), the gear (86) and the gear ring (84) are meshingly connected, a brush assembly (87) is fixedly connected to the outer side of the gear ring (84), and a side of the brush assembly (87) close to the dustproof net (82) is in close contact with the dustproof net (82).

10. The vehicle-mounted heat pump air conditioner based on carbon dioxide refrigerant according to claim 9, characterized in that: The brush assembly (87) comprises a connecting frame (871), wherein the connecting frame (871) is fixedly connected to a side of the gear ring (84) away from the air intake guide cylinder (7), and a side of the connecting frame (871) close to the dustproof net (82) is fixedly connected with telescopic springs (872) at equal intervals, and the ends of the telescopic springs (872) are fixedly connected with cleaning brush plates (873), and both ends of the side of the cleaning brush plate (873) away from the dustproof net (82) are fixedly connected with support shafts (874), and the ends of the support shafts (874) pass through the connecting frame (871), and the support shafts (874) and the connecting frame (871) are slidably connected, and a side of the cleaning brush plate (873) close to the dustproof net (82) is fitted and connected to the outer surface of the dustproof net (82).

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