Motor home air conditioner and motor home

Abstract

The invention relates to the technical field of air conditioners, in particular to a motor home air conditioner and a motor home, and aims to solve the problem of collision friction between a centrifugal fan and a volute caused by deformation of a chassis and the volute after the chassis is mounted on a roof in the prior art. In order to achieve the purpose, the motor home air conditioner comprises a chassis, a sealing gasket frame and a supporting unit, and an air outlet is formed in the chassis; the sealing gasket frame is arranged below the base plate and located on the periphery of the outer side of the air outlet, and a plurality of notches are formed in the inner side of the sealing gasket frame; the number of the supporting units is the same as that of the notches, the supporting units are arranged in the notches, and the supporting units abut against the bottom of the base plate. By means of the technical scheme, on the premise that the sealing effect of the sealing gasket frame is not affected, the industrial problem is solved at low cost by means of local rectification, chassis deformation reduction and prevention of the centrifugal fan from touching the volute.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular provides a recreational vehicle air conditioner and a recreational vehicle. Background Art

[0002] As people's living standards improve, more and more people choose to travel in RVs when traveling. They can stop at any time to enjoy the scenery and take a rest when they need to. In the process of using RVs, in order to be more comfortable in summer and winter, it is inevitable to use the air conditioner in the car.

[0003] The outdoor unit of the RV air conditioner is generally assembled on the chassis with an outer cover. The outer cover is generally injection molded, and considering the aesthetics of the appearance, the top is generally smaller than the lower mouth. In order to increase the stability of the RV air conditioner, the chassis is formed by sheet metal, and the sheet metal forming will also cause certain deformation. Most RV air conditioners are installed on the roof, and holes are punched at corresponding positions on the roof. When the chassis is installed, long dry bolts are generally used to connect it to the roof. However, during the installation process, the chassis will move downward under the action of the bolt preload, causing the chassis to deform. The motor drives the centrifugal fan to move and is installed on the chassis through the motor bracket. The chassis forms a sealed air duct through the frame-shaped EVA pad and delivers the heat exchanged air into the RV. Since the motor bracket is very close to the deformation area, the motor bracket will also undergo local displacement, thereby driving the centrifugal fan to touch the volute.

[0004] In response to the above technical problems, some solutions currently adopted are to deform the volute and the chassis synchronously to adapt to the operation, that is, when the disk deforms and moves, the volute also deforms and moves to prevent the centrifugal fan from touching the volute. However, the above solution does not fundamentally solve the problem. The centrifugal fan still tilts, which will cause vibration and noise problems in the later stage.

[0005] Accordingly, the art needs a new RV air conditioner to solve the above problems. Summary of the invention

[0006] The present invention aims to solve the above technical problem, that is, to solve the problem in the prior art that after the chassis is installed on the roof, the chassis and the volute are deformed, resulting in collision and friction between the centrifugal fan and the volute. To this end, the present invention provides a motorhome air conditioner, the motorhome air conditioner comprising:

[0007] A chassis, wherein an air outlet is provided on the chassis;

[0008] A sealing gasket frame, the sealing gasket frame is arranged below the chassis, the sealing gasket frame is located around the outer side of the air outlet, and a plurality of notches are arranged on the inner side of the sealing gasket frame;

[0009] The supporting units are multiple and the number of the supporting units is the same as the number of the notches. The supporting units are arranged in the notches and abut against the bottom of the chassis.

[0010] In the above-mentioned specific implementation of the RV air conditioner, the notches are arranged at the four corners of the sealing gasket frame.

[0011] In the above-mentioned specific embodiment with RV air conditioning, the notch is circular, the supporting unit includes a stud and a sleeve, the stud is used to be fixedly connected in the installation position, the sleeve is sleeved on the stud, and a bearing ring is provided at the upper end of the sleeve, and the upper end surface of the bearing ring is lower than the upper end surface of the sealing gasket frame.

[0012] In the above-mentioned specific embodiment with the RV air conditioner, a base ring is provided at the lower end of the sleeve.

[0013] In the above-mentioned specific embodiment with RV air conditioner, the supporting unit is a rubber pad, the rubber pad is rectangular, the notch is a rectangle matching the rubber pad, and the thickness of the rubber pad is greater than the thickness of the sealing pad frame.

[0014] In the above-mentioned specific embodiment of the RV air conditioner, the RV air conditioner also includes an evaporator, a compressor, a condenser, and an expansion valve arranged on the chassis and connected end to end in sequence, and the RV air conditioner also includes an air supply unit arranged on the chassis, and the evaporator is arranged at the air outlet of the chassis and is located at the air outlet end of the air supply unit.

[0015] In the above-mentioned specific embodiment of the RV air conditioner, the air supply unit includes a fan and a volute, the output end of the fan is arranged in the volute, and the outlet of the volute corresponds to the air outlet.

[0016] In the above-mentioned specific embodiment of the RV air conditioner, the volute is a split structure, the volute includes an upper shell and a lower shell, the lower shell is fixedly connected to the chassis, and the upper shell is snap-connected to the lower shell.

[0017] In the above-mentioned specific embodiment of the RV air conditioner, reinforcing ribs are arranged on the upper shell, and the reinforcing ribs are multiple and staggered.

[0018] A recreational vehicle, comprising the recreational vehicle air conditioner of any one of the above solutions.

[0019] Under the condition of adopting the above technical scheme, the present invention discloses an RV air conditioner. Different from the solution in the prior art that adapts to the deformation of the chassis to make the volute deform to avoid the friction between the centrifugal fan and the volute, the present invention optimizes and improves the connection structure between the chassis and the roof. Specifically, the chassis is pressed on the sealing gasket frame to form a sealed air duct for air supply. However, due to the action of the long rod bolts, the chassis will be deformed under the action of the sealing gasket frame, which will cause the volute connected thereto to also be deformed. The present invention fundamentally solves this problem by opening a plurality of notches on the inner side of the sealing gasket frame, and installing a support unit in the notch. The support unit will abut against the bottom of the chassis. When installing the RV air conditioner, the chassis can be tightly attached to the sealing gasket frame to achieve sealing, and can also change the force on the chassis at the air outlet under the action of the support unit to reduce its deformation, thereby avoiding deformation of the volute, thereby fundamentally solving the problem in the prior art that after the chassis is installed on the roof, the chassis and the volute are deformed, causing the centrifugal fan to collide and rub against the volute. Through the above technical solution, without affecting the sealing effect of the sealing gasket frame, local rectification is performed to reduce chassis deformation and prevent the centrifugal fan from touching the volute, thus solving this industry problem at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the bottom structure of the RV air conditioner in the present invention. Figure 1 , wherein an embodiment of a rubber pad is shown;

[0022] Figure 2 This is a schematic diagram of the bottom structure of the RV air conditioner in the present invention. Figure 2 , wherein an embodiment of a support sleeve is shown;

[0023] Figure 3 is a schematic structural diagram of a support unit in the present invention, which shows a specific structure of a sleeve embodiment;

[0024] Figure 4 This is a schematic diagram of the axonometric structure of the RV air conditioner in the present invention. Figure 1 , which shows the positional relationship of the refrigeration system;

[0025] Figure 5 This is a schematic diagram of the axonometric structure of the RV air conditioner in the present invention. Figure 2 , which shows the structure of the volute.

[0026] In the figure: 1, chassis, 2, air outlet, 3, sealing gasket frame, 4, notch, 5, support unit, 6, stud, 7, sleeve, 8, load-bearing ring, 9, base ring, 10, rubber pad, 11, evaporator, 12, compressor, 13, condenser, 14, expansion valve, 15, air supply unit, 16, fan, 17, volute, 18, upper shell, 19, lower shell, 20, reinforcement ribs. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although the specification is described in conjunction with an RV, this is not restrictive, and those skilled in the art can apply the present invention to other types of vehicles as needed, as long as the vehicle needs to install the air conditioner on the roof or other side walls that are prone to chassis deformation and thus cause collision and friction between the centrifugal fan and the volute.

[0028] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, ordinal numbers such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Furthermore, in order to more clearly demonstrate the core technical solution of the present invention, the description of the well-known structure of the air conditioner is omitted in the following description. However, this omission is only for the convenience of description and does not mean that the air conditioner can be without these structures.

[0031] In order to facilitate understanding of the technical solution of the present invention, the problems existing in the prior art are analyzed here to highlight the improvement focus of the present invention. The following is a description of the RV air conditioner in the prior art. The RV air conditioner generally uses a base as the overall supporting component, and then installs the components forming the air conditioning refrigeration system on the chassis 1. Specifically, the RV air conditioner is installed on the roof of the RV by locking and connecting the chassis 1 of the RV air conditioner and the roof of the RV with long rod bolts, and a pad is also installed between the chassis 1 and the roof. Generally, an EVA pad is used and its shape is generally frame-shaped, because a ventilation channel is to be formed between the chassis 1 and the roof, and a seal is formed by the frame-shaped EVA pad, which, on the one hand, serves the purpose of waterproofing and dustproofing, and on the other hand, can also ensure the continuous delivery of air-conditioned cold air. However, in order to ensure a certain degree of sealing, the chassis 1 needs to squeeze the frame-shaped EVA pad to a certain extent, but the chassis 1 is deformed due to the EVA pad when fastened by the long-rod bolts. A further reason is that an air supply unit 15 is also installed on the chassis 1 of the RV air conditioner, and the fan 16 bracket of the air supply unit 15 is very close to the deformation area, which causes the electrode bracket to deform with the chassis 1. After the fan 16 tilts, the output end of the fan 16 will collide or rub with the volute 17, affecting the service life of the RV air conditioner.

[0032] The current technical solution to the above-mentioned industry problem is to deform the volute 17 to match the output end of the fan 16. That is, the chassis 1 is deformed due to installation, so the volute 17 is also deformed, and the volute 17 moves synchronously with the chassis 1, thereby preventing the fan 16 from touching the volute 17. However, the above-mentioned technical solution does not fundamentally solve the problem. The chassis 1 and the fan 16 bracket are still deformed, and the fan is still tilted. As the years of use increase, the fan 16 will vibrate and make noise, affecting the user experience.

[0033] like Figure 1-5 As shown, the present invention proposes a motorhome air conditioner, which includes:

[0034] A chassis 1, wherein an air outlet 2 is provided on the chassis 1;

[0035] A sealing gasket frame 3, wherein the sealing gasket frame 3 is disposed below the chassis 1, the sealing gasket frame 3 is located around the outer side of the air outlet 2, and a plurality of notches 4 are disposed on the inner side of the sealing gasket frame 3;

[0036] The supporting unit 5 is multiple and the number of the supporting units 5 is the same as the number of the notches 4 . The supporting unit 5 is arranged in the notches 4 . The supporting unit 5 abuts against the bottom of the chassis 1 .

[0037] In this embodiment, the sealing gasket frame 3 of the RV air conditioner is structurally optimized to change the stress state of the base after being installed on the roof, thereby reducing the deformation degree of the chassis 1 as much as possible within the scope of installation and use, thereby fundamentally solving the industry problem of deformation of the chassis 1 leading to collision and friction between the fan 16 and the volute 17.

[0038] Specifically, see Figure 1 and Figure 2 The chassis 1 carries other components of the RV air conditioner. An air outlet 2 is provided on the chassis 1. Components for air supply are also installed on the upper side of the air outlet 2 on the chassis 1. A sealing gasket frame 3 is installed below the chassis 1 and above the roof. The sealing gasket frame 3 can be an EVA gasket frame. The chassis 1 is installed on the roof by long-rod bolts, and the bolts are tightened. Under the action of the bolt tension, the chassis 1 presses the sealing gasket frame 3. The sealing gasket frame 3 is frame-shaped and is aligned with the air outlet 2 and the sealing gasket frame 3 opened on the chassis 1 during installation. The sealing gasket frame 3 maintains the same distance from the outside of the edge of the air outlet 2.

[0039] The sealing gasket frame 3 is improved, and a plurality of notches 4 are opened on the inner side of the sealing gasket frame 3, and corresponding support units 5 are installed in the notches 4. After the chassis 1 is fastened by the long-rod bolts, the support units 5 will provide multi-point support around the air outlet 2 of the chassis 1. At the same time, under the pulling force of the long-rod bolts, the chassis 1 can also press the sealing gasket frame 3 to achieve the sealing between the air outlet 2 and the roof. The air outlet 2 of the chassis 1 is the part that is most easily deformed under the pulling force of the long-rod bolts. Through multi-point support, the force concentration at the air outlet 2 of the chassis 1 can be effectively reduced and the force can be dispersed, which greatly reduces the deformation of the chassis 1. When the deformation of the chassis 1 is reduced, the deformation of the fan 16 bracket is also reduced accordingly, and the positional relationship between the fan 16 and the volute 17 is also within the normal working requirement range, thereby fundamentally solving the collision and friction between the fan 16 and the volute 17.

[0040] Based on the above embodiments, continue to refer to Figure 1 and Figure 2 The notches 4 are arranged at the four corners of the sealing gasket frame 3 .

[0041] In the present embodiment, the position and number of the notches 4 in the sealing gasket frame 3 can be adaptively designed according to the specific internal structure layout of the RV air conditioner and the size of the air outlet 2. In the present embodiment, four notches 4 are opened at the four inner corners of the sealing gasket frame 3, and the support units 5 are installed in the four notches 4 to support the four corners of the air outlet 2 of the chassis 1. Combined with the structure and model of the air conditioner in the present embodiment, the arrangement of the supports at the four corners can reduce the deformation of the chassis 1 to a great extent.

[0042] It should be noted that, although the above-mentioned embodiment has four gaps 4 and can be adaptively arranged and designed according to the specific situation of the air conditioner, the above-mentioned improvements are all based on the inventive concept of changing the support force point of the chassis 1 of the present invention. That is, even if the specific arrangement and number of the gaps 4 are different from those in this embodiment, as long as they are based on the technical concept of the present invention, they should be understood to fall within the protection scope of the present invention.

[0043] Based on the above embodiments, see Figure 2 and Figure 3 The notch 4 is circular, and the supporting unit 5 includes a stud 6 and a sleeve 7. The stud 6 is used to be fixedly connected at the installation position. The sleeve 7 is sleeved on the stud 6. A bearing ring 8 is provided at the upper end of the sleeve 7. The upper end surface of the bearing ring 8 is lower than the upper end surface of the sealing gasket frame 3.

[0044] In this embodiment, the shape of the notch 4 can be set to be circular, and the notch 4 is opened at the four corners of the inner side of the sealing gasket frame 3. The notch 4 adopts a circular shape to form an opening at the intersection with the inner edge of the sealing gasket frame 3. The support unit 5 in this embodiment adopts a structure composed of a stud 6 and a sleeve 7. The stud 6 is installed on the roof, that is, the roof is the installation position of the stud 6 in this embodiment. In other scenarios, the stud 6 can also be adaptively installed in other installation positions, and then the sleeve 7 is sleeved on the stud 6. A bearing ring 8 is provided on the upper end surface of the sleeve 7. The bearing ring 8 abuts against the bottom surface of the chassis 1 at the end surface of the sleeve 7, and the upper end surface of the bearing ring 8 is lower than the upper end surface of the sealing gasket frame 3. When the chassis 1 is fastened by the long rod bolts, the bottom surface of the chassis 1 first contacts the sealing gasket frame 3. After further locking, the sealing gasket frame 3 is compressed, and the chassis 1 contacts the upper end surface of the sleeve 7, that is, the bearing ring 8, to achieve support near the air outlet 2 of the chassis 1, thereby avoiding further large deformation.

[0045] The load-bearing ring 8 can increase the contact area between the sleeve 7 and the chassis 1 to achieve more stable support, and the upper end surface of the load-bearing ring 8 is lower than the upper end surface of the sealing gasket frame 3, which can ensure that the chassis 1 and the sealing gasket frame 3 maintain a complete contact area, thereby ensuring sealing and achieving a sealing effect while supporting the chassis 1.

[0046] On the basis of the above embodiment, a base ring 9 is provided at the lower end of the sleeve 7 .

[0047] In this embodiment, a base ring 9 is also provided at the lower end of the sleeve 7. The base ring 9 and the bearing ring 8 are a pair of annular structures located above and below the sleeve 7. The bearing ring 8 improves the bearing capacity of the sleeve 7 for the chassis 1, and the base ring 9 improves the stability of the sleeve 7 when installed on the roof or other positions, further improving the supporting capacity of the sleeve 7 for the chassis 1.

[0048] Based on the above embodiments, see Figure 1 The supporting unit 5 is a rubber pad 10 , the rubber pad 10 is rectangular, the notch 4 is a rectangle matching the rubber pad 10 , and the thickness of the rubber pad 10 is greater than the thickness of the sealing pad frame 3 .

[0049] In this embodiment, based on the above-mentioned technical concept of the present invention, it can be thought of another embodiment. Specifically, the notch 4 opened on the inner side of the sealing gasket is rectangular, and can be a square in special cases. Similarly, the notch 4 is opened at the four corners of the sealing gasket frame 3, and the rectangular notch 4 is also in an open form. In this embodiment, the supporting unit 5 is a rubber gasket 10. During installation, the rubber gasket 10 is placed in the notch 4. The shape of the rubber gasket 10 is similar to the notch 4. The thickness of the rubber gasket 10 is greater than the thickness of the sealing gasket frame 3. That is, when the chassis 1 is installed, the chassis 1 will first contact the rubber gasket 10, and the rubber gasket 10 will be compressed, and then contact the sealing gasket frame 3. After tightening, the compressed rubber gasket 10 has a certain supporting force, and the sealing gasket frame 3 and the chassis 1 can also maintain contact, which will not affect the sealing of the air duct. This embodiment can more simply and quickly solve the industry problem of stress deformation of the RV air-conditioning chassis 1.

[0050] Based on the above embodiments, see Figure 4 and Figure 5 The RV air conditioner also includes an evaporator 11, a compressor 12, a condenser 13, and an expansion valve 14, which are arranged on the chassis 1 and are connected end to end in sequence. The RV air conditioner also includes an air supply unit 15 arranged on the chassis 1. The evaporator 11 is arranged at the air outlet 2 of the chassis 1 and is located at the air outlet end of the air supply unit 15.

[0051] In this embodiment, an air-conditioning system for cooling and heat exchange is also provided on the chassis 1 of the RV air conditioner. The evaporator 11, the compressor 12, the condenser 13, and the expansion valve 14 are connected through pipelines to form a circulation loop. The compressor 12 compresses and pressurizes the refrigerant, and dissipates heat through the condenser 13. The refrigerant evaporates and absorbs heat in the evaporator 11 after passing through the expansion valve 14, thereby forming heat exchange refrigeration. Then, the wind blown out is cooled by the evaporator 11 through the air supply unit 15 installed on the chassis 1 to form cool wind, and is sent into the vehicle through the air outlet 2 on the chassis 1 and the ventilation channel at the rear end. The evaporator 11 is installed near the air outlet 2, on the air outlet side of the air supply unit 15. Other components of the refrigeration system of the RV air conditioner are not described here in detail. It is sufficient to reflect the basic working principle of the present invention, but this does not mean that the present invention does not have other air-conditioning components.

[0052] On the basis of the above embodiment, the air supply unit 15 includes a fan 16 and a volute 17 , the output end of the fan 16 is arranged in the volute 17 , and the outlet of the volute 17 corresponds to the air outlet 2 .

[0053] In this embodiment, the air supply unit 15 includes at least a fan 16 and a volute 17. The fan 16 is installed on the chassis 1 through a bracket. The end blades of the fan 16 rotate to form wind. The output end of the fan 16 and the evaporator 11 are both installed inside the volute 17, so that the low-temperature evaporator 11 and the wind-generating part are in the same chamber to ensure sufficient heat exchange. The wind generated by the output end of the fan 16 can fully contact and cool the evaporator 11, thereby improving the heat exchange efficiency and reducing energy loss.

[0054] On the basis of the above embodiment, the volute 17 is a split structure, and the volute 17 includes an upper shell 18 and a lower shell 19 . The lower shell 19 is fixedly connected to the chassis 1 , and the upper shell 18 and the lower shell 19 are snap-connected.

[0055] In the present embodiment, the volute 17 adopts a split structure, and the split volute 17 is composed of an upper shell 18 and a lower shell 19. In the present embodiment, the lower shell 19 is a relatively low annular enclosure structure, which is installed and fastened by screws or other feasible fastening methods to improve the stability of the lower shell 19 on the chassis 1. At the same time, it can also improve the basic sealing between the lower shell 19 and the chassis 1 at the bottom, so as to make the fan and the evaporator 11 perform convection heat exchange in a relatively closed space as much as possible; the upper shell 18 and the lower shell 19 are quick-plug-in structures, which can be snap-on or latch-on, and the upper shell 18 and the lower shell 19 are kept sealed.

[0056] The above-mentioned split structure can be easily installed, and at the same time, it can be observed whether there is any deformation during the installation process, so that corresponding adjustments can be made to improve the installation accuracy; in addition, the split structure is easy to open when the RV air conditioner needs maintenance or repair, which is convenient for technicians to operate and improves convenience.

[0057] On the basis of the above embodiment, the upper shell 18 is provided with reinforcing ribs 20 , and the reinforcing ribs 20 are multiple and staggered.

[0058] In this embodiment, a plurality of reinforcing ribs 20 are designed on the upper shell 18. The shape, thickness and number of the reinforcing ribs 20 can be adaptively adjusted according to the specific shape of the upper shell 18 to improve the strength of the volute 17 itself and avoid the situation where the fan 16 damages the volute 17 when a fault occurs.

[0059] The present invention also proposes a motorhome, which includes the motorhome air conditioner in the above embodiment. It should be noted that the motorhome air conditioner of the present invention can also be installed on other cars. As long as the chassis 1 is deformed when the air conditioner is installed on the car, the technical solution of the present invention can be used to solve it.

[0060] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A motorhome air conditioner, characterized in that: The RV air conditioner includes: A chassis (1), wherein an air outlet (2) is provided on the chassis (1); A sealing gasket frame (3), the sealing gasket frame (3) being arranged below the chassis (1), the sealing gasket frame (3) being located around the outer side of the air outlet (2), and a plurality of notches (4) being arranged on the inner side of the sealing gasket frame (3); A support unit (5), wherein the support units (5) are multiple and the number is the same as the notch (4), the support unit (5) is arranged in the notch (4), and the support unit (5) abuts against the bottom of the chassis (1).

2. The RV air conditioner according to claim 1, characterized in that: The notches (4) are arranged at the four corners of the sealing gasket frame (3).

3. The RV air conditioner according to claim 2, characterized in that: The notch (4) is circular, and the support unit (5) comprises a stud (6) and a sleeve (7). The stud (6) is used for being fixedly connected at the installation position, and the sleeve (7) is sleeved on the stud (6). A bearing ring (8) is provided at the upper end of the sleeve (7), and the upper end surface of the bearing ring (8) is lower than the upper end surface of the sealing gasket frame (3).

4. The RV air conditioner according to claim 3, characterized in that: A base ring (9) is provided at the lower end of the sleeve (7).

5. The RV air conditioner according to claim 2, characterized in that: The supporting unit (5) is a rubber pad (10), the rubber pad (10) is rectangular, the notch (4) is a rectangle matching the rubber pad (10), and the thickness of the rubber pad (10) is greater than the thickness of the sealing pad frame (3).

6. The RV air conditioner according to claim 4 or 5, characterized in that: The RV air conditioner further comprises an evaporator (11), a compressor (12), a condenser (13), and an expansion valve (14) which are arranged on the chassis (1) and are connected end to end in sequence. The RV air conditioner further comprises an air supply unit (15) arranged on the chassis (1). The evaporator (11) is arranged at the air outlet (2) of the chassis (1) and is located at the air outlet end of the air supply unit (15).

7. The RV air conditioner according to claim 6, characterized in that: The air supply unit (15) comprises a fan (16) and a volute (17); the output end of the fan (16) is arranged in the volute (17); and the outlet of the volute (17) corresponds to the air outlet (2).

8. The RV air conditioner according to claim 7, characterized in that: The volute (17) is a split structure, comprising an upper shell (18) and a lower shell (19), the lower shell (19) being fixedly connected to the chassis (1), and the upper shell (18) and the lower shell (19) being snap-connected.

9. The RV air conditioner according to claim 8, characterized in that: The upper shell (18) is provided with reinforcing ribs (20), and the reinforcing ribs (20) are multiple and staggered.

10. A motorhome, characterized in that: The RV includes the RV air conditioner according to any one of claims 1 to 9.

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