Mobile air conditioner with heat preservation air cavity

Abstract

The mobile air conditioner comprises a shell, a horizontal partition plate is arranged in the shell and divides the shell into an upper cavity and a lower cavity, a first volute assembly made of heat preservation materials is arranged in the upper cavity, a first volute cavity is formed in the first volute assembly, an evaporator is arranged at the air inlet end of the first volute cavity, and a second volute assembly made of heat preservation materials is arranged at the air outlet end of the first volute cavity. The air outlet of the first volute cavity faces upwards; a second volute assembly is arranged in the lower cavity, a second volute cavity is formed in the second volute assembly, a condenser is arranged at the air inlet end of the second volute cavity, and the air inlet end of the second volute cavity and the air inlet end of the first volute cavity are located on different faces of the shell. The mobile air conditioner with the heat preservation air cavity is compact in structure, convenient and rapid to assemble, high in precision, low in working noise and power consumption, large in air outlet amount, long in air supply distance and good in heat dissipation performance, continuous and stable refrigeration of the mobile air conditioner is guaranteed, and the using effect is good.

Description

Technical Field

[0001] The invention relates to a mobile air conditioner, in particular to a mobile air conditioner with a heat preservation air cavity. Background Art

[0002] Compared with traditional air conditioners, mobile air conditioners have no external unit and do not require professional installation. They have an integrated design, and the compressor, evaporator and condenser are all integrated together. They can be used by plugging in and do not require professional relocation. They will no longer destroy the beauty of the overall interior decoration, and there is no need to worry about only being able to cool a certain area. They are equipped with universal casters and can be moved at will. Therefore, they facilitate the user's usage needs and improve the flexibility of air-conditioning equipment.

[0003] Since the mobile air conditioner integrates the condenser and evaporator in the same shell, in order to improve thermal efficiency, especially to avoid cold energy loss, high requirements are placed on the overall design layout and heat insulation of the air duct. In the prior art, the air duct is set up unreasonable, resulting in low air supply efficiency. At the same time, the air duct is made of plastic or sheet metal. Since it has no heat insulation function, it is necessary to stick heat insulation material on the plastic or sheet metal, which not only increases the material cost and assembly cost, but also increases the overall weight, affecting the portability of the mobile air conditioner. At the same time, it is easy to resonate and generate noise.

[0004] At the same time, the heat dissipation effect of the condenser as the heat dissipation end is not ideal, which affects the overall cooling effect. Summary of the invention

[0005] Technical issues to be solved

[0006] The technical problem to be solved by the present invention is to provide a mobile air conditioner with a heat preservation air cavity which has a compact structure, a reasonable layout, a large air output, low wind noise, and good heat dissipation and refrigeration effects.

[0007] Technical solutions to the problem

[0008] The present invention provides a mobile air conditioner with a heat-insulating air cavity, which comprises a shell 1. A horizontal partition plate 2 is provided in the shell 1 and divides the shell 1 into an upper cavity and a lower cavity. A first volute assembly 3 made of a heat-insulating material is provided in the upper cavity. A first volute cavity is formed in the first volute assembly 3. An evaporator 51 is provided at the air inlet end of the first volute cavity. The air outlet of the first volute cavity is arranged upward. A second volute assembly 4 is provided in the lower cavity. A second volute cavity is formed in the second volute assembly 4. A condenser 52 is provided at the air inlet end of the second volute cavity. The air inlet end of the second volute cavity and the air inlet end of the first volute cavity are located on different surfaces of the shell 1.

[0009] Furthermore, the thermal insulation material is foam plastic.

[0010] Furthermore, the thermal insulation material is expanded polystyrene.

[0011] Furthermore, a bracket plate 32 is vertically arranged in the upper cavity, the first volute assembly 3 is fixed on the bracket plate 32, a first drive motor 31 is fixed on the bracket plate 32, and an output shaft of the first drive motor 31 is connected to the first impeller 34 in the volute assembly 3 and is used to drive it to rotate.

[0012] Furthermore, the first volute assembly 3 is formed by splicing a first volute 33 and a second volute 35, and the first volute cavity is formed between the first volute 33 and the second volute 35. The end of the first volute cavity is provided with an air inlet hole 350 and serves as an air inlet end, and the top of the first volute cavity is provided with an air outlet hole and serves as an air outlet end.

[0013] Furthermore, a first positioning structure for positioning is provided between the first volute 33 and the second volute 35 .

[0014] Furthermore, the first volute assembly 3 also includes an air outlet guide port 36 disposed on the air outlet hole and used for guiding the airflow to the first air outlet at the top of the housing 1 .

[0015] Furthermore, the air outlet guide port 36 is fitted on the air outlet hole, and a second positioning structure is provided between the contact surfaces of the first volute and the second volute.

[0016] Further, the first volute 33 includes a first plate body 33a and a first arcuate half shell 33b arranged on the first plate body 33a, the first plate body 33a is provided with a central hole 330 for accommodating the driving motor or driving shaft of the first impeller to pass through, the edge of the first plate body 33a is provided with a first mounting hole 332 for connecting with the bracket plate 32, the end surface of the first arcuate half shell 33b forms a first mounting surface, and the outer side of the first mounting surface is sequentially provided with a plurality of first positioning grooves 333 along the contour direction; the second volute 35 includes a second plate body 35a and a second arcuate half shell 35b arranged on the second plate body 35a, the second plate body 35a is provided with a hole body and forms an air inlet hole 350, the end surface of the second arcuate half shell 35b forms a second mounting surface that can be fitted with the first mounting surface, and the outer side of the second mounting surface is provided with a first positioning protrusion 353 corresponding to the first positioning groove 333.

[0017] Furthermore, the second plate 35 a is rectangular, and its edges are bent outward to form an air inlet 354 that can be connected to the evaporator 51 .

[0018] Furthermore, the horizontal partition 2 is provided with a water collection area 2a located directly below the evaporator 51 and a drainage area 2b connected to the water collection area 2a and located directly above the condenser 52. The bottom surface of the water collection area 2a is higher than the bottom surface of the drainage area 2b and can drain the water in the water collection area 2a into the drainage area 2b. The bottom surface of the drainage area 2b is arranged in a matrix or is provided with a plurality of drainage holes along the length direction of the condenser for draining water and cooling the condenser 52.

[0019] Furthermore, drainage holes are provided on the bottom surface of the drainage area along the length direction, and a drip plate 201 is provided on the drainage hole. Holes with diameters of 0.4 mm to 0.9 mm are arranged in a matrix on the drip plate 201 to form a drip hole 200 .

[0020] Furthermore, the drainage area 2b is provided with a first filter 203 located at the top and a second filter 202 located at the bottom, the aperture of the first filter is smaller than the aperture of the second filter, the edge of the second filter 202 is elastically connected to the side wall of the drainage area 2b, and the horizontal partition is provided with a vibration motor connected to the second filter 202 and used to make it vibrate up and down.

[0021] Furthermore, the inner wall of the drainage area 2b is provided with a plurality of hooks, and the edge of the second filter screen is connected to the hooks through a rubber band to form an elastic connection.

[0022] Furthermore, the water collection area 2a is provided with mounting columns 22 for mounting the evaporator 51 and a support portion 24 that contacts and supports the bottom surface of the evaporator 51. There are four mounting columns 22 arranged in a rectangular shape. The two mounting columns 22 on the same side are connected by a water baffle 23. The length direction of the water baffle 23 is parallel to the length direction of the evaporator 51, and an inner drainage area is formed between the two water baffles 23. The end of the inner drainage area is connected to the drainage area 2b.

[0023] Furthermore, there is a gap between the outer side of the water retaining plate 23 and the inner wall of the water collecting area 2a to form an outer drainage area, and the end of the outer drainage area is connected to the drainage area 2b.

[0024] Furthermore, the support portion 24 is a strip-shaped protrusion and is disposed between the two water baffles 23 , and the length direction of the support portion 24 is parallel to the length direction of the water baffle 23 .

[0025] Furthermore, the bottom surface of the water collection area 2a is a slope.

[0026] Furthermore, the water collection area 2a and the drainage area 2b are arranged at the edge of the partition.

[0027] Furthermore, a strip-shaped protrusion is provided on the bottom surface of the horizontal partition 2 to form an installation limit portion 26, and the installation limit portion 26 is located directly below the drainage area 2b. A groove 261 is provided on the bottom surface of the installation limit portion 26 to connect the drip hole 200 to the lower cavity; both ends of the installation limit portion 26 can contact the side panels on both sides of the condenser 52 and achieve axial limitation; the bottom surface of the horizontal partition 2 is also provided with a connecting portion for connecting to the side panels of the condenser and achieving fixation, and the connecting portion is two and is respectively located at both ends of the installation limit portion 26.

[0028] Furthermore, the mounting portion includes a first mounting portion 28 and a second mounting portion 29, and a gap is provided between the first mounting portion 28 and the head of the mounting limit portion 26 to form a slot 260 into which the first side panel 522 of the condenser 52 can be inserted from bottom to top, and a first mounting hole for connecting to the first side panel 522 is provided on the side wall of the first mounting portion 28; the bottom surface of the second mounting portion 29 is a plane and forms a limit surface 29a, and a second mounting hole 290 is provided on the limit surface 29a, and the top of the second side panel 521 of the condenser 52 is bent outward to form a mounting surface 5221 that can fit on the limit surface 29a, and a third mounting hole corresponding to the second mounting hole 290 is provided on the mounting surface 431.

[0029] Furthermore, the edge of the first side plate 522 is bent outward to form a reinforcing plate, and the reinforcing plate is in contact with the side wall 281 of the first mounting portion 28 to achieve radial limitation of the condenser.

[0030] Furthermore, the inner wall of the first snail cavity includes a first arc segment 302, a second arc segment 303, a third arc segment 304, a fourth arc segment 305, a fifth arc segment 306, a sixth arc segment 307 and a seventh arc segment 308 which are connected and tangent to each other in sequence, and the central angle ratio corresponding to their arc lengths is (0.8-0.9): (1.84-1.94): (1.85-1.95): (1.84-1.97): (1.73-1.83): (1.88-1.98): 1, and the radius ratio is (1.35-1.45): (1.23-1.33): (1.22-1.37): (1.07-1.17): (1.08-1.18): (0.93-1.13): 1.

[0031] Furthermore, the end of the first arc segment 302 is tangent to a first straight segment 301, and the angle between the first straight segment 301 and the horizontal plane is 79°-83°. The end of the seventh arc segment 308 is connected to a second straight segment 309 through an arc transition, and the angle between the second straight segment 309 and the horizontal plane is 20°-24°. An upward air outlet is formed between the first straight segment 301 and the second straight segment 309.

[0032] Furthermore, the axis of the first impeller in the first volute cavity is located at the midpoint of a line connecting the center of the third arc segment 304 and the center of the seventh arc segment 308 .

[0033] Furthermore, a radius ratio between the first impeller and the seventh arc segment 308 is (0.82-0.92):1.

[0034] Beneficial Effects

[0035] The mobile air conditioner with a heat preservation air cavity of the present invention adopts an upper and lower air duct arrangement, thereby increasing the space of the volute cavity, increasing the air intake and air outlet, providing a long air supply distance and having a good use effect; the volute cavity is optimized in design, the air flow characteristics are improved, the internal resistance is reduced, the air supply distance is extended, and the air flow leakage caused by the radial and axial gaps of the wind circle is effectively reduced, the eddy flow scale formed between the volute, the wind circle and the impeller is significantly reduced, and the air flow noise in the volute flow channel is reduced; the volute is made of foam plastic, which has good shaping ability, low mold opening cost and manufacturing cost, can be manufactured by aluminum mold, can be recycled, and has good heat insulation performance. Avoid cooling energy loss, reduce power consumption, and have noise reduction function, good user experience, light weight, easy to carry and install; the volute adopts an assembled structure to reduce process difficulty and manufacturing cost, and is easy to assemble and maintain; a positioning structure is set to achieve rapid positioning and improve assembly accuracy and efficiency; an air guide structure is set to avoid air leakage, reduce cooling energy loss, maintain stable wind pressure, and reduce wind noise and power consumption, energy saving and environmental protection, and good use effect; multiple drip holes are set to allow condensed water to drip from above to the condenser in the form of water droplets, thereby cooling the condenser and greatly improving the cooling of the condenser Cooling efficiency and effect, thereby improving the overall refrigeration effect; setting the first filter can prevent debris from entering the drainage area; setting the second filter can produce up and down vibrations, so that intermittent positive and negative water pressures are formed between the second filter and the drip hole, which has a certain driving force on water, thereby causing the drip hole to produce continuous intermittent dripping. At the same time, it can prevent the water level from being too low and causing the water pressure to be too low, thereby affecting normal dripping and drainage, ensuring stable and reliable dripping of the drip hole, and at the same time, it can prevent dust particles from accumulating and clogging in the drip hole, ensuring smooth dripping of the drip hole; setting the water collection area and the drainage area is convenient for the evaporator and condenser Installation at different positions can achieve optimized design of the air duct, reduce air duct interference, and improve refrigeration effect; the water collection area includes an inner area and an outer area, which can ensure that all condensed water on the evaporator and the air duct components enters the water collection area, improves the collection rate of condensed water, and has a good use effect; the connection structure between the partition and the condenser is optimized to achieve rapid positioning and installation, and has high assembly accuracy and efficiency; the mobile air conditioner with a heat-insulating wind cavity of the present invention has a compact structure, is easy and quick to assemble with high accuracy, has low working noise and power consumption, has a large air output, a long air supply distance, and has good heat dissipation performance, thereby ensuring continuous and stable refrigeration of the mobile air conditioner and a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a mobile air conditioner with a heat preservation air cavity according to the present invention;

[0037] Figure 2 It is a schematic diagram of the installation of the air guide tube of the mobile air conditioner with the heat preservation air cavity of the present invention;

[0038] Figure 3A half-section view of a mobile air conditioner with a heat preservation air cavity according to the present invention;

[0039] Figure 4 It is a schematic diagram of the internal structure of a mobile air conditioner with a heat preservation air cavity according to the present invention;

[0040] Figure 5 It is a schematic diagram of the exploded structure of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0041] Figure 6 It is a schematic diagram of the installation of the first volute assembly of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0042] Figure 7 It is a schematic diagram of the installation of the evaporator of the mobile air conditioner with the heat preservation air cavity of the present invention;

[0043] Figure 8 It is a schematic diagram of the exploded structure of the first volute assembly of the mobile air conditioner with a heat-insulating air cavity of the present invention;

[0044] Fig. 9 It is a structural schematic diagram of the first volute of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0045] Fig.10 It is a structural schematic diagram of the second volute of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0046] Fig.11 It is a structural schematic diagram of the second volute of the mobile air conditioner with a heat preservation air cavity from another angle of the present invention;

[0047] Fig.12 It is a structural schematic diagram of the first volute cavity of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0048] Fig.13 It is a schematic diagram of the installation of the horizontal partition of the mobile air conditioner with the heat preservation air cavity of the present invention;

[0049] Fig.14 It is a schematic diagram of the installation of the horizontal partition, condenser and evaporator of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0050] Fig.15 It is a schematic diagram of the installation of the condenser of the mobile air conditioner with the heat preservation air cavity of the present invention;

[0051] Fig.16 for Fig.15 Enlarged view of part A in the middle;

[0052] Fig.17 It is a schematic diagram of installing the condenser of the mobile air conditioner with a heat preservation air cavity from another angle of the present invention;

[0053] Fig.18 for Fig.17 Enlarged view of middle part B;

[0054] Fig.19 It is a structural schematic diagram of a horizontal partition of a mobile air conditioner with a heat preservation air cavity according to the present invention;

[0055] Fig. 20 It is a structural schematic diagram of the first connecting portion of the mobile air conditioner with a heat preservation air cavity of the present invention;

[0056] Fig.21 It is a structural schematic diagram of the drainage area of ​​the mobile air conditioner with a heat-insulating air cavity according to the present invention. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0058] See also Figure 1-Figure 21 The present invention provides an integrated thermal insulation air chamber of a mobile air conditioner, which includes a shell 1, a first volute assembly 3, an evaporator 51, a second volute assembly 4 and a condenser 52.

[0059] The shell 1 serves as an installation and supporting carrier. The above-mentioned first volute assembly 3, evaporator 51, second volute assembly 4 and condenser 52 are all installed in the shell 1. The shell 1 as a whole is a vertically arranged rectangular structure with a hollow structure inside to form an installation cavity for installing other components. A horizontal partition 2 is provided in the installation cavity. The horizontal partition 2 divides the shell 1 into an upper cavity and a lower cavity. A first air inlet 102a is provided on the side wall of the upper cavity, a first air outlet 102b is provided on the top of the upper cavity, a second air inlet 101a and a second air outlet 101b are provided on the side wall of the lower cavity, and the first air inlet 102a and the second air inlet 101a are located on different side walls of the shell 1 to ensure the air intake of the upper cavity and the lower cavity. Rollers are provided at the bottom of the shell 1 to facilitate handling and movement.

[0060] Two cold air outlet ducts 12 are arranged on the first air outlet 102b on the top of the shell 1. The cold air outlet ducts 12 can rotate and are corrugated tubes that can be bent to achieve air outlet adjustment at any angle. A hot air outlet duct 11 is installed on the second air outlet 101b to guide the hot air to the outdoors or away from the first air inlet 102a to avoid the influence of hot air. The cold air outlet duct 12 and the hot air outlet duct 11 are both detachably connected to achieve quick installation and disassembly.

[0061] The first volute component 3 is installed in the upper cavity, and it is located between the first air inlet 102a and the first air outlet 102b, thereby forming a first air duct. A first impeller 34 is provided in the first air duct, and the first impeller 34 can form an airflow in the first air duct by rotating, that is, generate wind, and the evaporator 51 is arranged on the first air inlet 102a, and is used to cool the passing airflow, thereby forming cold wind. In the present application, the first volute component 3 is made of a thermal insulation material, and the thermal insulation material is a foam plastic. The foam plastic is a type of polymer material formed by a large number of gas micropores dispersed in a solid plastic. It has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., which meets the design concept of heat insulation, noise reduction and weight reduction in the present application, reduces energy consumption, reduces working noise (wind noise), and reduces the overall weight; in the present embodiment, the foam plastic is expanded polystyrene, That is, EPS, which also has waterproof and moisture-proof functions to prevent air condensation from producing water droplets and causing mold; in the present application, the density of the expanded polystyrene is 35kg-45kg / cubic meter, and its hardness is relatively large, which can achieve good connection and support, thereby improving the overall structural strength; by using foam plastic to make the volute, the production cost is reduced, and its mold can be an aluminum mold with low mold opening cost, and it can be recycled, which greatly reduces the production cost; at the same time, unlike the plastic plates or sheet metals in the prior art, there will be no assembly gaps and impact noise during vibration, which greatly reduces the working noise and provides a good user experience; at the same time, after using the above-mentioned materials, the thickness of the volute can be appropriately increased to further improve its structural strength. At the same time, it can effectively reduce the working noise, has the effects of heat insulation and sound insulation, and at the same time, it is light in weight and easy to assemble as a whole.

[0062] In the present application, a bracket plate 32 is fixedly installed in the upper cavity by screws. The bracket plate 32 is a metal plate or a plastic plate, which is used to install and fix the first volute assembly. The bracket plate 32 is a rectangular structure as a whole, and its edges are bent 90 degrees to the same side to form a mounting portion, which is fixedly connected to the inner wall of the shell and the horizontal partition 2; the first volute assembly 3 is fixed on the bracket plate 32. At the same time, a first drive motor 31 is fixed on the bracket plate 32. A hole body is opened on the bracket plate 32 to allow the first drive motor to pass through, or to allow the output shaft of the first drive motor to pass through. In order to improve the installation and connection strength and avoid the generation of a force arm, in the present application, the first drive motor is a fan motor, and its installation position is located in the middle position of the motor. Therefore, no force arm will be generated after being connected to the bracket plate 32. The installation is reliable and stable, and no torsional force will be generated on the bracket plate. The output shaft of the first drive motor 31 is connected to the first impeller 34, and the first impeller 34 is located in the first volute assembly 3, thereby generating airflow.

[0063] The first volute assembly 3 in the present application is made of foam plastic. In order to facilitate processing and manufacturing, and to facilitate later assembly, especially the installation of the first impeller, the first volute assembly 3 in the present application is spliced ​​by the first volute 33 and the second volute 35. A first volute cavity is formed between the first volute 33 and the second volute 35. An air inlet 350 is provided at the end of the first volute cavity as an air inlet end, and faces the first air inlet 102a. An air outlet is provided at the top of the first volute cavity as an air outlet end, and faces the first air outlet 102b. In order to facilitate rapid positioning and assembly, a first positioning structure for positioning is provided between the first volute 33 and the second volute 35. The first positioning structure is a positioning groove and a positioning protrusion. For details, refer to Figure 9-11 The first volute 33 includes a first plate body 33a and a first arc-shaped half shell 33b arranged on the first plate body 33a. A center hole 330 is opened on the first plate body 33a, and the center hole 330 can accommodate the driving motor or driving shaft of the first impeller 34 to pass through. A plurality of lugs are provided on the edge of the first plate body 33a, and a first mounting hole 322 is provided on the lug for fixed connection with the bracket plate 32. The end face of the first arc-shaped half shell 33b is a plane to form a first mounting surface. A first positioning groove 333 is provided on the outer side of the first mounting surface. There are multiple first positioning grooves 333 and they are arranged in sequence along the contour direction of the first arc-shaped half shell 33b. The above-mentioned first volute 33 is integrally formed.

[0064] The second volute 35 includes a second plate body 35a and a second arc-shaped half shell 35b arranged on the second plate body 35a. The second plate body 35a is parallel to the first plate body 33a. A hole body is opened on the second plate body 35a to form an air inlet 350. The end face of the second arc-shaped half shell 35b is a plane to form a second mounting surface. The second mounting surface can be fitted with the first mounting surface to form a complete volute cavity, i.e., the first volute cavity. A first positioning protrusion 353 is provided on the outer side of the second mounting surface. The first positioning protrusion 353 corresponds to the first positioning groove 333, and can be mutually clamped to form a complete volute cavity structure. The first volute 33 and the second volute 35 can be fixedly connected by an adhesive or a tape.

[0065] The second plate body 35a is rectangular, and its edge is bent outward, that is, it is bent 90 degrees away from the direction of the volute cavity, to form an air inlet guide port 354, which can be connected to the evaporator 51; further, the upper edge of the air inlet guide port 354 extends toward the evaporator to form a shielding portion, which covers the upper end of the evaporator 51, thereby improving the air inlet guiding effect and avoiding air leakage. While improving the cooling effect, it can effectively reduce wind noise. The above-mentioned second volute 35 is integrally formed.

[0066] In the present application, the first volute assembly 3 also includes an air outlet guide 36, the shape of which is the same as the shape of the air outlet hole, which is fitted on the top of the first volute and aligned with the air outlet hole, and its upper end is connected to the first air outlet on the top of the shell 1, and is used to guide the airflow to the first air outlet 102b for discharge, which can reduce or avoid air leakage, increase the air outlet pressure, increase the air outlet distance, and effectively reduce wind noise, and has a good use effect; the air outlet guide 36 is fitted on the air outlet hole, and a first air outlet is provided between the contact surface with the first volute 33 and the second volute 35. Two positioning structures, the second positioning structure includes a second positioning groove I3310 arranged at the top of the first volute, a second positioning groove II3510 arranged at the top of the second volute and a second positioning protrusion arranged at the bottom of the air outlet guide port, the second positioning protrusion corresponds to the second positioning groove I3310 and the second positioning groove II3510, and can be inserted into the second positioning groove I3310 and the second positioning groove II3510 to achieve positioning. In the present application, the air outlet guide port 36 is fixed to the top surface 331 of the first volute and the top surface 351 of the second volute by an adhesive or tape.

[0067] In the present application, the first volute cavity is structurally optimized to have better airflow guidance, reduce wind noise, increase air outlet pressure, and thus increase the conveying distance. For details, see Fig.12The inner wall of the first snail cavity includes a first arc segment 302, a second arc segment 303, a third arc segment 304, a fourth arc segment 305, a fifth arc segment 306, a sixth arc segment 307 and a seventh arc segment 308 which are connected and tangent to each other in sequence. The central angles α1:α2:α3:α4:α5:α6:α7 of the arc lengths of the first arc segment 302, the second arc segment 303, the third arc segment 304, the fourth arc segment 305, the fifth arc segment 306, the sixth arc segment 307 and the seventh arc segment 308 are in the ratio of (0.8-0.9):(1.84-1.94):(1.85-1.95):(1.84-1.97):(1 .73-1.83):(1.88-1.98):1. In this embodiment, the ratio of the central angle corresponding to the arc length is 0.85:1.89:1.8:1.92:1.78:1.93:1. The ratio of the radius R1:R2:R3:R4:R5:R6:R7 of the first arc segment 302, the second arc segment 303, the third arc segment 304, the fourth arc segment 305, the fifth arc segment 306, the sixth arc segment 307 and the seventh arc segment 308 is (1.35-1.45):(1.23-1.33):(1.22-1.37):(1.07-1.17):(1.08-1.18):( 0.93-1.13): 1. In this embodiment, the ratio of the radii is 1.39: 1.28: 1.27: 1.12: 1.13: 0.98: 1. At the same time, a first straight line segment 301 is tangent to the end of the first arc segment 302, and the angle between the first straight line segment 301 and the horizontal plane is 79°-83°. A second straight line segment 309 is connected to the end of the seventh arc segment 308 through an arc transition, and the angle between the second straight line segment 309 and the horizontal plane is 20°-24°. An upward air outlet is formed between the first straight line segment 301 and the second straight line segment 309. At the same time, the axis of the first impeller in the first volute cavity is located at the third arc segment. The midpoint of the line connecting the center of circle 304 and the center of circle 308 of the seventh arc segment, and the radius ratio of the first impeller to the seventh arc segment 308 is (0.82-0.92): 1. The present application optimizes the design of the internal flow field guide of the first volute cavity, reduces the vortex size, improves the airflow characteristics, reduces the internal resistance, extends the air supply distance, and effectively reduces the airflow leakage caused by the radial and axial gaps of the wind circle, significantly reduces the vortex scale formed between the volute and the impeller, and improves the airflow noise in the volute flow channel. Compared with the existing volute assembly, at the same speed, it has a longer conveying distance and smaller working noise, with obvious performance improvement and better use effect.

[0068] The second volute assembly 4 is arranged in the lower cavity, which is located between the second air inlet 101a and the second air outlet 101b, and forms a second air duct. A second impeller is provided in the second air duct. At the same time, a second drive motor is provided in the lower cavity, which is connected to the second impeller and is used to drive the second impeller to rotate, thereby generating airflow in the second air duct to form wind. The condenser 52 is arranged at the air inlet end of the second air duct, that is, on the second air inlet. The condenser is connected to the evaporator 51 through a pipeline, which is used to release heat to the internal medium, that is, dissipate heat. Therefore, the air outlet end of the second air duct is hot air; at the same time, a compressor is provided in the lower cavity, which is used to compress the medium in the pipe to form a liquid to achieve heat release.

[0069] The partition 2 is arranged horizontally and divides the installation cavity of the shell 1 into an upper cavity and a lower cavity. A water collection area 2a and a drainage area 2b are provided on the upper surface of the partition 2. The water collection area 2a and the drainage area 2b are connected to each other, and the length direction of the water collection area 2a is parallel to the length direction of the partition 2, while the length direction of the drainage area 2b is parallel to the width direction of the partition 2, that is, the length direction of the water collection area 2a is perpendicular to the length direction of the drainage area 2b. Accordingly, during installation, the length direction of the evaporator 51 is perpendicular to the length direction of the condenser 52, which is conducive to the optimal arrangement of the air duct. In the present application, the water collection area 2a and the drainage area 2b are arranged at the edge of the partition, that is, after installation, the evaporator 51 and the condenser 52 are both arranged near the edge of the shell, and the two are located on different surfaces of the shell 1, wherein the water collection area 2a is located at one end of the first air inlet, and the drainage area 2b is located at one end of the second air inlet.

[0070] In this embodiment, the partition 2 is a rectangular partition body 21, whose edge is bent upward by 90 degrees to form an edge portion. At the same time, a partition plate is arranged in the partition body 21, and the partition plate divides the partition body 21 into a first area and a second area. The first area is used to install the first volute assembly, and the second area is an L-shaped structure, which has a water collection area 2a and a drainage area 2b, wherein the bottom surface of the water collection area 2a is higher than the bottom surface of the drainage area 2b, so that the condensed water in the water collection area 2a can be drained into the drainage area 2b; a partition plate is arranged in the water collection area 2a. There are mounting columns 22 and support portions 24, wherein there are multiple mounting columns 22, and screw holes are provided on the top surfaces thereof, for fixing the evaporator 51 on the partition 2 by screws, and specifically, the evaporator 51 is installed in the water collection area 2a, and the top of the support portion 24 contacts the bottom surface of the evaporator 51, thereby supporting the evaporator 51 and improving the installation stability and reliability of the evaporator 51; in the present application, there are four mounting columns 22, which are arranged in a rectangular shape, and two mounting columns 22 on the same side are connected by a water retaining plate 23, see Fig.19The length direction of the water baffle 23 is parallel to the length direction of the evaporator 51, that is, parallel to the length direction of the water collection area 2a. Two parallel water baffles 23 are formed between the four mounting columns 22, and an inner drainage area is formed between the two water baffles 23, which is mainly used to collect and drain the condensed water on the evaporator to improve the drainage efficiency. The end of the inner drainage area is connected to the drainage area 2b; there is a gap between the outer side of the water baffle 23 and the inner wall of the water collection area 2a, which forms an outer drainage area, and the end of the outer drainage area is also connected to the drainage area 2b. By setting the outer drainage area, the evaporator can be drained. The condensed water on the part and the air duct all flows into the water collection area, thereby improving the collection rate of the condensed water; in order to enable the condensed water in the water collection area 2a to quickly flow into the drainage area 2b, the bottom surface of the water collection area 2a is an inclined surface, which is inclined toward the drainage area 2b, and its inclination angle is 0.5°-1°; the support part 24 is a strip-shaped protrusion, which is arranged between the two water baffles 23, and the length direction of the support part 24 is parallel to the length direction of the water baffle 23, and will not hinder the drainage of the condensed water. Its top surface can contact with the bottom of the evaporator to achieve support, thereby improving the installation stability and reliability of the evaporator.

[0071] After assembly, the bottom surface of the partition 2 is fixedly connected to the top of the condenser 52. At the same time, the drainage area 2b is located directly above the condenser 52. A drip hole 200 is provided on the bottom surface of the drainage area 2b. The drip hole 200 is used for drainage and cooling the condenser 52. There are multiple drip holes 200 and they are arranged in sequence along the length direction of the condenser 52. Preferably, they are arranged equidistantly. During the drainage process, the drip holes drain water in the form of dripping. Through dripping, water can fully contact the condenser, thereby improving the cooling efficiency and effect. At the same time, multiple drip holes are set to drip at the same time, which increases the cooling coverage area of ​​the condenser. At the same time, combined with the water pumping at the lower end, the cooling efficiency and effect of the condenser can be greatly improved, thereby improving the overall cooling effect of the mobile air conditioner.

[0072] In order to facilitate processing, production and maintenance, in the present application, a drainage hole is opened on the bottom surface of the drainage area. There are multiple drainage holes and they are arranged in sequence along the length direction of the drainage area, that is, the length direction of the condenser. A drip plate 201 is provided on the drain outlet. Holes with a diameter of 0.4mm-0.6mm are arranged in a matrix on the drip plate 201 to form drip holes 200, which can form water droplets and drip onto the condenser below, which greatly improves the cooling effect and utilization rate of the condensed water. At the same time, in order to prevent impurities from entering and clogging the drip holes, a first filter screen 203 is provided in the drainage area 2b. The first filter screen can be located above the liquid surface or below the liquid surface. At the same time, a first filter screen is also provided at the inlet end of the drainage area to prevent debris in the drainage area and the upper cavity from entering and clogging the drip holes.

[0073] In order to improve the reliability and stability of dripping and avoid the influence of low water level on normal dripping, in this embodiment, a second filter screen 202 is further provided in the drainage area. The second filter screen is located below the first filter screen and is arranged horizontally. The aperture of the second filter screen is larger than that of the first filter screen. The edge of the second filter screen 202 is elastically connected to the side wall of the drainage area 2b. Specifically, a plurality of hooks are provided on the edge of the inner wall of the drainage area 2b. The edge of the second filter screen is connected to the buckle through a rubber band and forms an elastic connection. At the same time, the horizontal partition is provided with a plurality of hooks. A vibration motor is provided on the top, which is connected to the second filter screen 202 and is used to make the second filter screen vibrate up and down, so that intermittently changing positive and negative water pressures are formed between the second filter screen and the drip hole. It has a certain driving property for water, so that the drip hole can produce continuous intermittent dripping. At the same time, it can avoid the water level being too low and causing the water pressure to be too low, which affects the normal dripping drainage, ensuring stable and reliable dripping cooling of the drip hole. At the same time, it can avoid the accumulation and blockage of dust particles in the drip hole, ensuring smooth dripping of the drip hole.

[0074] A strip-shaped protrusion is provided on the bottom surface of the partition 2 to form an installation limit portion 26. The installation limit portion 26 is located directly below the drainage area 2b. It is a strip-shaped rectangular structure, and its length direction is parallel to the length direction of the drainage area 2b. A groove body 261 is opened on the bottom surface of the installation limit portion 26 to connect the drip hole 200 to the lower cavity to achieve drip drainage. In the present application, a plurality of groove bodies are opened at the lower end of the installation limit portion 26, which correspond to the drainage holes one by one, that is, one groove body corresponds to one drainage hole. Through the above-mentioned structural setting, the overall structural strength of the installation limit portion 26 can be increased, and the connection reliability and stability with the condenser can be improved.

[0075] The cross section of the installation limit portion 26 is rectangular, and its ends can contact the side panels on both sides of the condenser 52, thereby achieving axial limitation, that is, limitation in the length direction of the condenser; a connecting portion is also provided on the bottom surface of the partition 2, and there are two connecting portions, which are respectively located at the two ends of the installation limit portion 26, and are used to connect with the side panels of the condenser, thereby achieving connection and fixation between the two; specifically, the installation portion includes a first installation portion 28 and a second installation portion 29, the first installation portion 28 is arranged at the head position of the installation limit portion, and there is a gap between the first installation portion 28 and the head of the installation limit portion 26, forming a strip-shaped slot 260, which can accommodate the first side panel 42 of the condenser 52 to be inserted from bottom to top, and at the same time, a first installation hole is opened on the side wall of the first installation portion 28, the axis of the first installation hole is perpendicular to the end face of the installation limit portion, and is used to connect with the first side panel 42 by screws, and at the same time, a screw hole coaxial with the first installation hole is opened on the end face of the installation limit portion; at the same time, the first The edge of one side panel 42 is bent outward by 90 degrees to form a reinforcing plate, which contacts the side wall 281 of the first mounting portion 28, thereby realizing radial limitation of the condenser, that is, when the first side panel is inserted into the slot from bottom to top, the reinforcing plate is pushed to make it fit against a side wall 281 of the first mounting portion 28. After fitting, the first mounting portion and the mounting holes on the first side panel are coaxial to realize precise positioning. At this time, it can be installed and fixed by screws; the bottom surface of the second mounting portion 29 is a plane, which is parallel to the bottom surface of the partition 2, forming a limiting surface, and a second mounting hole is provided on the limiting surface 29a. At the same time, the top of the second side panel 43 of the condenser 52 is bent outward by 90 degrees to form a mounting surface 431, which can fit against the limiting surface, and a third mounting hole corresponding to the second mounting hole 290 is provided on the mounting surface 431, which is used to fix the second side panel on the partition by screws, thereby realizing fixed installation of the entire condenser.

[0076] At the same time, a water wheel is arranged at the bottom of the shell. Specifically, a water storage area is arranged just above the condenser, and one or more water wheels are arranged in the water storage area. The water wheel is driven by a motor, and the rotation of the water wheel can throw the water in the water storage area upward to the condenser, thereby cooling the condenser. The water in the water storage area is the water dripping from the drip hole above, that is, the drip hole drips water from the top of the condenser and cools it, part of the water evaporates and takes away the heat, and the rest flows along the condenser into the water storage area below, and then is pumped and cooled by the water wheel, thereby realizing upper and lower double cooling, greatly improving the cooling effect and efficiency, ensuring continuous and stable cooling of the whole machine, and having good use effect.

[0077] The mobile air conditioner with a heat preservation air cavity of the present invention adopts an upper and lower air duct arrangement, thereby increasing the space of the volute cavity, increasing the air intake and air outlet, providing a long air supply distance and having a good use effect; the volute cavity is optimized in design, the air flow characteristics are improved, the internal resistance is reduced, the air supply distance is extended, and the air flow leakage caused by the radial and axial gaps of the wind circle is effectively reduced, the eddy flow scale formed between the volute, the wind circle and the impeller is significantly reduced, and the air flow noise in the volute flow channel is reduced; the volute is made of foam plastic, which has good shaping ability, low mold opening cost and manufacturing cost, can be manufactured by aluminum mold, can be recycled, and has good heat insulation performance. Avoid cooling energy loss, reduce power consumption, and have noise reduction function, good user experience, light weight, easy to carry and install; the volute adopts an assembled structure to reduce process difficulty and manufacturing cost, and is easy to assemble and maintain; a positioning structure is set to achieve rapid positioning and improve assembly accuracy and efficiency; an air guide structure is set to avoid air leakage, reduce cooling energy loss, maintain stable wind pressure, and reduce wind noise and power consumption, energy saving and environmental protection, and good use effect; multiple drip holes are set to allow condensed water to drip from above to the condenser in the form of water droplets, thereby cooling the condenser and greatly improving the cooling of the condenser Cooling efficiency and effect, thereby improving the overall refrigeration effect; setting the first filter can prevent debris from entering the drainage area; setting the second filter can produce up and down vibrations, so that intermittent positive and negative water pressures are formed between the second filter and the drip hole, which has a certain driving force on water, thereby causing the drip hole to produce continuous intermittent dripping. At the same time, it can prevent the water level from being too low and causing the water pressure to be too low, thereby affecting normal dripping and drainage, ensuring stable and reliable dripping of the drip hole, and at the same time, it can prevent dust particles from accumulating and clogging in the drip hole, ensuring smooth dripping of the drip hole; setting the water collection area and the drainage area is convenient for the evaporator and condenser Installation at different positions can achieve optimized design of the air duct, reduce air duct interference, and improve refrigeration effect; the water collection area includes an inner area and an outer area, which can ensure that all condensed water on the evaporator and the air duct components enters the water collection area, improves the collection rate of condensed water, and has a good use effect; the connection structure between the partition and the condenser is optimized to achieve rapid positioning and installation, and has high assembly accuracy and efficiency; the mobile air conditioner with a heat-insulating wind cavity of the present invention has a compact structure, is easy and quick to assemble with high accuracy, has low working noise and power consumption, has a large air output, a long air supply distance, and has good heat dissipation performance, thereby ensuring continuous and stable refrigeration of the mobile air conditioner and a good use effect.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mobile air conditioner with a heat preservation air chamber, characterized in that: It includes a shell 1, in which a horizontal partition 2 is provided, dividing the shell 1 into an upper chamber and a lower chamber, in which a first volute assembly 3 made of a heat-insulating material is provided, in which a first volute chamber is formed, and an evaporator 51 is provided at the air inlet end of the first volute chamber, and the air outlet of the first volute chamber is arranged upward; in the lower chamber, a second volute assembly 4 is provided, in which a second volute chamber is formed, and a condenser 52 is provided at the air inlet end of the second volute chamber, and the air inlet end of the second volute chamber and the air inlet end of the first volute chamber are located on different surfaces of the shell 1.

2. The mobile air conditioner with a heat preservation air chamber according to claim 1, characterized in that: The heat-insulating material is foam plastic.

3. The mobile air conditioner with a heat preservation air chamber according to claim 1, characterized in that: The first volute assembly 3 is formed by splicing a first volute 33 and a second volute 35, and the first volute cavity is formed between the first volute 33 and the second volute 35. An air inlet 350 is provided at the end of the first volute cavity and serves as an air inlet end, and an air outlet is provided at the top of the first volute cavity and serves as an air outlet end.

4. The mobile air conditioner with a heat preservation air chamber as claimed in claim 3, characterized in that: The first volute assembly 3 further includes an air outlet guide port 36 disposed on the air outlet hole and used for guiding the airflow to the first air outlet at the top of the housing 1 .

5. The mobile air conditioner with a heat preservation air chamber as claimed in claim 3, characterized in that: The first volute 33 includes a first plate body 33a and a first arcuate half shell 33b arranged on the first plate body 33a, the first plate body 33a is provided with a central hole 330 for accommodating the driving motor or driving shaft of the first impeller to pass through, the edge of the first plate body 33a is provided with a first mounting hole 332 for connecting with the bracket plate 32, the end surface of the first arcuate half shell 33b forms a first mounting surface, and the outer side of the first mounting surface is sequentially provided with a plurality of first positioning grooves 333 along the contour direction; the second volute 35 includes a second plate body 35a and a second arcuate half shell 35b arranged on the second plate body 35a, the second plate body 35a is provided with a hole body and forms an air inlet hole 350, the end surface of the second arcuate half shell 35b forms a second mounting surface that can be fitted with the first mounting surface, and the outer side of the second mounting surface is provided with a first positioning protrusion 353 corresponding to the first positioning groove 333.

6. The mobile air conditioner with a heat preservation air chamber according to claim 1, characterized in that: The horizontal partition 2 is provided with a water collection area 2a located directly below the evaporator 51 and a drainage area 2b connected to the water collection area 2a and located directly above the condenser 52. The bottom surface of the water collection area 2a is higher than the bottom surface of the drainage area 2b and can drain the water in the water collection area 2a into the drainage area 2b. The bottom surface of the drainage area 2b is arranged in a matrix or is provided with a plurality of drainage holes along the length direction of the condenser for draining water and cooling the condenser 52.

7. The mobile air conditioner with a heat preservation air chamber as claimed in claim 6, characterized in that: The bottom surface of the drainage area is provided with drainage holes along the length direction, and a drip plate 201 is provided on the drainage hole. Holes with diameters of 0.4 mm to 0.9 mm are arranged in a matrix on the drip plate 201 to form a drip hole 200 .

8. The mobile air conditioner with a heat preservation air chamber as claimed in claim 6, characterized in that: The water collection area 2a is provided with mounting columns 22 for mounting the evaporator 51 and a support portion 24 that contacts and supports the bottom surface of the evaporator 51. There are four mounting columns 22 arranged in a rectangular shape. The two mounting columns 22 on the same side are connected by a water baffle 23. The length direction of the water baffle 23 is parallel to the length direction of the evaporator 51, and an inner drainage area is formed between the two water baffles 23. The end of the inner drainage area is connected to the drainage area 2b.

9. The mobile air conditioner with a heat preservation air chamber according to claim 1, characterized in that: The inner wall of the first snail cavity includes a first arc segment 302, a second arc segment 303, a third arc segment 304, a fourth arc segment 305, a fifth arc segment 306, a sixth arc segment 307 and a seventh arc segment 308 which are connected and tangent to each other in sequence, and the central angle ratio corresponding to their arc lengths is (0.8-0.9): (1.84-1.94): (1.85-1.95): (1.84-1.97): (1.73-1.83): (1.88-1.98): 1, and the radius ratio is (1.35-1.45): (1.23-1.33): (1.22-1.37): (1.07-1.17): (1.08-1.18): (0.93-1.13):

1.

10. The mobile air conditioner with a heat preservation air chamber according to claim 9, characterized in that: The axis of the first impeller in the first volute cavity is located at the midpoint of a line connecting the center of the third arc segment 304 and the center of the seventh arc segment 308 .

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