Thin air conditioner host of electric automobile

Abstract

A compressor, a condenser, an expansion valve and an evaporator are fixed on a shell, an evaporator body inclines towards an air outlet of an air conditioner and is fixed in an air outlet cavity, an air blowing opening is formed in an upper partition plate, a positive pressure fan is fixed on the partition plate, and a negative pressure fan is fixed on the positive pressure fan. The downstream groove edge of the condensate water collecting groove is provided with a blocking plate, the upper end of the blocking plate and the upper portion of the fan cover form an air outlet channel, the air outlet channel is communicated with an air conditioner air outlet, and the upper partition plate is connected with the upstream groove edge of the condensate water collecting groove. A lower fan cover covering an air conditioner return air inlet and an air conditioner air outlet is installed below the shell, an air inlet and an air outlet are formed in the lower fan cover, the distribution range of the air outlet is larger than that of the air inlet, an air inlet cavity and an air outlet cavity corresponding to the air inlet and the air outlet are formed in the lower fan cover, and the air inlet cavity corresponds to the air conditioner return air inlet. The exhaust chamber corresponds to an air conditioner exhaust outlet; the air conditioner host can effectively reduce the overall thickness and ensure stable blowing.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air conditioners, and in particular to a thin air conditioner host for an electric vehicle. Background Art

[0002] The air conditioning main unit on the new energy bus is generally fixed on the top of the vehicle. Patent No. 202311643435.3 discloses a new energy vehicle air conditioning main unit, which includes a shell, on which a compressor, a condenser, an expansion valve and an evaporator connected to each other are fixed, and the lower end of the shell is provided with an air conditioning return air port and an air outlet, and a wind cover is provided on the shell, and the wind cover is divided into a return air chamber and an air outlet chamber by a partition plate, and the evaporator includes an evaporator body, and the evaporator body is provided with an evaporator refrigerant inlet, an outlet and an evaporator refrigerant flow channel connecting the evaporator refrigerant inlet and outlet, and a blowing port is provided on the partition plate, and a positive pressure fan is fixed on the partition plate, and the air outlet of the positive pressure fan corresponds to the blowing port, and a condensate collecting tank is provided below the air outlet chamber, and at least one end of the condensate collecting tank is provided with a drain pipe, and a blocking plate is provided on the downstream groove edge of the condensate collecting tank, and the partition plate is connected to the upstream groove edge of the condensate collecting tank. The following problems exist during use:

[0003] 1. The evaporator is installed vertically on the shell, which means that the thickness of the shell needs to be higher than the vertical installation height of the evaporator, increasing the occupied volume and affecting the installation effect;

[0004] 2. Since the evaporator is installed vertically, the positive pressure fan needs to blow air to the evaporator. Condensed water will exist in the evaporator, and the blowing air will drive the condensed water to flow out. Although an inclined blocking plate is provided along the downstream groove of the condensed water collection tank, the range of the condensed water splashed out by the blowing air will be larger than the range blocked by the blocking plate, affecting the use effect.

[0005] 3. The air outlet at the bottom of the shell is too small, which affects the use effect. Utility Model Content

[0006] The technical problem to be solved by the utility model is: a thin air-conditioning main unit for an electric vehicle, which can effectively reduce the overall thickness, ensure stable air blowing, and not carry water droplets, thereby improving the use and installation effect.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a thin air-conditioning main unit of an electric vehicle, comprising a shell, on which a compressor, a condenser, an expansion valve and an evaporator connected to each other are fixed, an air-conditioning return air port and an air-conditioning outlet are arranged at the lower end of the shell, an upper wind cover for covering the air-conditioning return air port and the air-conditioning outlet is arranged on the shell, an upper partition plate is arranged on the upper wind cover, the upper partition plate divides the wind cover into a return air chamber and an outlet air chamber, the air-conditioning return air port is communicated with the return air chamber, and the air-conditioning outlet is communicated with the return air chamber. The air outlet chamber is connected, the evaporator includes an evaporator body, the evaporator body is provided with an evaporator refrigerant inlet, an evaporator refrigerant outlet and an evaporator refrigerant flow channel connecting the evaporator refrigerant inlet and the evaporator refrigerant outlet, the evaporator refrigerant inlet is connected with the refrigerant outlet of the expansion valve, the evaporator refrigerant outlet is connected with the reflux port of the compressor through a refrigerant return pipeline, the refrigerant outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the refrigerant inlet of the expansion valve, and a refrigerant pipe for collecting condensed water is provided below the air outlet chamber. The condensate collecting tank is provided with a drain pipe at at least one end of the condensate collecting tank, the evaporator body is fixed in the air outlet chamber at an angle toward the air outlet of the air conditioner, the upper partition plate is provided with an air blowing port, a positive pressure fan for blowing air to the evaporator body is fixed on the upper partition plate, the air outlet of the positive pressure fan is arranged to blow air horizontally and corresponds to the air blowing port, the installation height of the condenser is lower than the installation height of the evaporator body, a blocking plate for obliquely blocking the blowing of the evaporator is arranged along the downstream groove of the condensate collecting tank, and the upper end of the blocking plate is connected to the wind cover An outlet duct for convenient air flow is formed above the air conditioner, and the outlet duct is connected to the air outlet of the air conditioner, and the upper partition plate is connected to the upstream slot edge of the condensate collection tank; a lower wind hood covering the air conditioner return air outlet and the air conditioner outlet is installed below the shell, and the lower wind hood is provided with an air inlet and an air exhaust outlet, and the distribution range of the exhaust outlet is larger than the distribution range of the air inlet, and the lower wind hood is provided with an air inlet chamber and an exhaust chamber corresponding to the air inlet and the exhaust outlet, the air inlet chamber corresponds to the air conditioner return air outlet, and the exhaust chamber corresponds to the air conditioner exhaust outlet.

[0008] As a preferred solution, the evaporator body is fixed on the upstream side of the condensate collecting tank and is tilted to cover the condensate collecting tank, and a positive pressure airflow gap is formed between the downstream side of the evaporator body and the upper opening of the condensate collecting tank to facilitate the airflow to enter the condensate collecting tank; the condenser is horizontally suspended inside the outer shell, and the bottom of the outer shell is provided with heat dissipation holes corresponding to the condenser.

[0009] As a preferred solution, a car roof is also provided between the lower wind hood and the outer shell, the car roof is provided with a notch for accommodating the return air outlet and the air outlet of the air conditioner, the lower wind hood is provided with a sealing plate for sealing the air inlet chamber and the exhaust chamber, the sealing plate is connected to the outer shell by connecting screws and fixed to press the car roof, the lower wind hood is matched with the sealing plate by screw connection, the sealing plate is provided with an air inlet opening for facilitating the communication between the air inlet chamber and the return air chamber, and an air outlet opening for corresponding communication between the exhaust chamber and the air outlet chamber.

[0010] As a preferred solution, the sealing plate is provided with an air outlet pipe opening inserted into the air outlet of the air conditioner, the air outlet pipe opening corresponds to the position of the air outlet opening, and the return air chamber, the notch and the air inlet chamber are interconnected.

[0011] As a preferred solution, the downwind hood includes a downwardly concave mounting plate, the mounting plate is provided with inclined enclosures transitioning to the mounting plate around the mounting plate, the air inlet chamber and the air exhaust chamber are separated by a lower partition plate between the mounting plate and the sealing plate, an air conditioning control panel is provided on the mounting plate, the air inlet and exhaust outlet are distributed on the mounting plate and the inclined enclosure, and the distribution range of the exhaust outlet on the inclined enclosure is larger than that of the air inlet.

[0012] As a preferred solution, inclined insertion slots are provided on both side walls of the air outlet chamber, the evaporator body is inserted into the insertion slots, and the upper wind hood includes an upper wind hood body fixed on the bottom plate of the outer shell, and an upper cover is fixed to the upper end of the upper wind hood body.

[0013] As a preferred solution, an annular protrusion is provided at the edge of the notch of the automobile roof, a limit ring is provided under the bottom plate of the shell to cover the annular protrusion, and the automobile roof is also provided with an installation protrusion that allows the shell to be suspended on the automobile roof to facilitate heat dissipation of the condenser.

[0014] As a preferred solution, the upper end portion of the baffle plate is provided with a folded edge bent toward the upstream side.

[0015] As a preferred solution, the outer contour of the lower wind shield is rectangular, and the lower partition plate includes a middle straight plate portion and an inclined plate portion connecting two ends of the middle straight plate portion, and the inclined plate portion extends to two adjacent corners of the lower wind shield.

[0016] As a preferred solution, a PTC heater is further provided on the upper wind hood downstream of the evaporator body.

[0017] After adopting the above technical scheme, the effect of the utility model is as follows: since the thin air-conditioning main unit of the electric vehicle includes a shell, the shell is fixed with a compressor, a condenser, an expansion valve and an evaporator connected to each other, the lower end of the shell is provided with an air-conditioning return air port and an air-conditioning outlet, the shell is provided with an upper wind cover for covering the air-conditioning return air port and the air-conditioning outlet, the upper wind cover is provided with an upper partition plate, the upper partition plate divides the wind cover into a return air chamber and an outlet air chamber, the air-conditioning return air port is communicated with the return air chamber, and the air-conditioning outlet is communicated with the outlet The evaporator comprises an evaporator body, on which an evaporator refrigerant inlet, an evaporator refrigerant outlet and an evaporator refrigerant flow channel connecting the evaporator refrigerant inlet and the evaporator refrigerant outlet are arranged, the evaporator refrigerant inlet is connected to the refrigerant outlet of the expansion valve, the evaporator refrigerant outlet is connected to the reflux port of the compressor through a refrigerant return line, the refrigerant outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the refrigerant inlet of the expansion valve, and a refrigerant collecting device for collecting condensed water is arranged below the air outlet chamber. A condensed water collecting tank, at least one end of which is provided with a drain pipe, the evaporator body is fixed in the air outlet chamber at an angle toward the air outlet of the air conditioner, an air blowing port is provided on the upper partition plate, a positive pressure fan for blowing air to the evaporator body is fixed on the upper partition plate, the air outlet of the positive pressure fan is arranged to blow air horizontally and corresponds to the air blowing port, the installation height of the condenser is lower than the installation height of the evaporator body, a blocking plate for obliquely blocking the blowing of the evaporator is arranged along the downstream groove of the condensed water collecting tank, and the upper end of the blocking plate is connected to the wind cover An outlet duct is formed above the air conditioner to facilitate the passage of air flow, and the outlet duct is communicated with the air outlet of the air conditioner, and the upper partition plate is connected to the upstream slot edge of the condensate collecting tank; a lower wind cover covering the air conditioner return air outlet and the air conditioner outlet is installed below the shell, and an air inlet and an air outlet are arranged on the lower wind cover, and the distribution range of the air outlet is larger than the distribution range of the air inlet, and an air inlet chamber and an air outlet chamber corresponding to the air inlet and the air outlet are arranged on the lower wind cover, and the air inlet chamber corresponds to the air conditioner return air outlet, and the air outlet chamber corresponds to the air conditioner outlet;The compressor starts up, compresses the refrigerant and sends it to the condenser, where it dissipates heat and forms liquid refrigerant. The liquid refrigerant is adjusted by the expansion valve to become low-pressure liquid refrigerant and enters the evaporator body, where it absorbs surrounding heat and becomes gaseous refrigerant. The positive-pressure fan blows air to the evaporator body, first drawing air from the air inlet into the air inlet chamber and then into the return air chamber from the air conditioner return air outlet, thereby blowing the cold air in the hood out from the air conditioner outlet. Since the positive-pressure fan has horizontal air outlets and the evaporator body is tilted, a part of it will be aligned with the air outlet of the positive-pressure fan, so that the airflow will enter the evaporator body and guide the airflow to be blown out at an angle. The airflow is large and the wind speed is fast, which can speed up the process. The evaporation of the refrigerant in the evaporator improves the cooling effect of the air conditioner. Since the evaporator is tilted, the airflow will blow to the bottom of the wind shield, which reduces the impact of the airflow. Since the temperature of the evaporator body is relatively low, condensed water will be generated on the outer surface of the evaporator body, and this condensed water may be blown off. At this time, the condensed water falls on the bottom of the wind shield and finally enters the condensed water collection tank. The blocking plate can also effectively block the condensed water splashed to the outside. Then the condensed water flows into the condensed water collection tank along the blocking plate and is discharged through the drain pipe. This can effectively prevent the condensed water from being blown out from the air outlet of the air conditioner; then the airflow is blown out from the air outlet of the air conditioner along the air outlet duct, and finally the airflow enters the exhaust chamber and is discharged from the exhaust port; the air conditioner host can effectively reduce the overall thickness, and ensure that the blowing is stable and does not carry water droplets, thereby improving the use and installation effect. ;

[0018] Because the evaporator body is fixed on the upstream side of the condensate collecting tank and is tilted to cover the condensate collecting tank, a positive pressure airflow gap is formed between the downstream side of the evaporator body and the upper opening of the condensate collecting tank to facilitate the airflow to enter the condensate collecting tank; the condenser is horizontally suspended inside the shell, and the bottom of the shell is provided with heat dissipation holes corresponding to the condenser; it can ensure that the condensed water can quickly enter the condensate collecting tank after being blown by the airflow, and the gas blown out by the positive pressure fan will pass through the positive pressure airflow gap into the condensate collecting tank, and then be blown out from the drain pipe, so that the condensed water in the condensate collecting tank can be discharged more smoothly; and when the condenser is installed horizontally, the installation height is minimized, ensuring that the overall effective thickness of the shell can be reduced, thereby improving the use effect.

[0019] Since a car roof is also provided between the lower hood and the outer shell, a notch is provided on the car roof to accommodate an air-conditioning return air port and an air-conditioning outlet. A sealing plate is provided on the lower hood to seal an air inlet chamber and an air exhaust chamber. The sealing plate is connected to the outer shell and fixedly presses the car roof via connecting screws. The lower hood cooperates with the sealing plate via a screw connection. The sealing plate is provided with an air inlet opening for facilitating communication between the air inlet chamber and the return air chamber, and an air outlet opening for corresponding communication between the exhaust chamber and the air outlet chamber. The connecting screws can ensure that the sealing plate and the lower hood are fixed accurately and stably in sequence, and can effectively ensure effective communication between the outer shell and the lower hood.

[0020] Furthermore, since the sealing plate is provided with an air outlet pipe opening inserted into the air outlet of the air conditioner, the air outlet pipe opening corresponds to the position of the air outlet opening, and the return air chamber, the notch and the air inlet chamber are interconnected, so that the exhaust chamber and the air outlet chamber are effectively connected, and the blown gas can directly enter the exhaust chamber, thereby improving the efficiency of blowing. After the return air chamber, the notch and the air inlet chamber are connected, the efficiency of exhaustion can be increased, and the air intake volume can be increased.

[0021] Furthermore, since the lower wind hood includes a downwardly concave mounting plate, the mounting plate is provided with inclined enclosures transitioning to the mounting plate around the mounting plate, the air inlet chamber and the air exhaust chamber are divided and separated by a lower partition plate between the mounting plate and the sealing plate, an air conditioning control panel is provided on the mounting plate, the air inlet and air exhaust outlet are distributed on the mounting plate and the inclined enclosure, and the distribution range of the air exhaust outlet is larger than the distribution range of the air inlet; the lower wind hood will be installed inside the vehicle, so as to effectively circulate the air in the vehicle through the air inlet and air exhaust outlet, and increase the blowing range of the air exhaust outlet.

[0022] Furthermore, since inclined insertion grooves are provided on both side walls of the air outlet chamber, the evaporator body is inserted into the insertion grooves, and the upper wind hood includes an upper wind hood body fixed on the bottom plate of the shell, and an upper cover is fixed on the upper end of the upper wind hood body; the evaporator body can be easily installed along the insertion grooves, thereby being quickly and accurately fixed, and the internal structure of the upper wind hood body can be effectively protected by the upper cover.

[0023] Furthermore, since an annular protrusion is provided at the edge of the notch of the automobile roof, a limit stop ring is provided below the bottom plate of the shell to cover the annular protrusion, and the top plate of the automobile is also provided with a mounting protrusion that allows the shell to be suspended on the top plate of the automobile to facilitate the heat dissipation of the condenser; the bottom plate of the shell can be quickly installed above the top plate of the automobile through the annular protrusion and the limit stop ring, and the shell can be effectively suspended in the air, so that the heat emitted by the condenser during condensation can be effectively dissipated, thereby improving efficiency.

[0024] Furthermore, since the upper end of the blocking plate is provided with a folded edge bent toward the upstream side, this can effectively protect the condensed water on the blocking plate, so when the air volume and air pressure of the positive pressure fan can be increased, the blowing out of the condensed water can also be effectively protected.

[0025] Since the outer contour of the lower wind hood is a rectangle, the lower partition plate includes a middle straight plate portion and an inclined plate portion connecting the two ends of the middle straight plate portion, and the inclined plate portion extends to two adjacent corners of the lower wind hood; this can effectively limit the installation position of the air inlet and the air outlet, expand the position where the air outlet can be installed as much as possible, and improve the blowing range.

[0026] Since a PTC heater is also provided on the upper wind hood downstream of the evaporator body, when heating is needed in winter, the PTC heater can be started for heating. At this time, the positive pressure fan blows the heated hot air into the car, thereby achieving heating in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a stereogram of an embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model after the outer shell is removed;

[0030] Figure 3 This is a schematic diagram of the structure of the condenser and the upper wind hood of the embodiment of the utility model;

[0031] Figure 4 It is a top view of the interior of the housing of the embodiment of the utility model;

[0032] Figure 5 yes Figure 4 Section view at AA;

[0033] Figure 6 This is a schematic diagram of the structure of the lower wind shield of the utility model embodiment;

[0034] Figure 7 This is a schematic diagram of the structure in the notch of the automobile roof panel according to the embodiment of the utility model;

[0035] Figure 8 This is a structural schematic diagram of the installation position of the lower partition plate of the utility model embodiment

[0036] In the attached figure: 1, housing; 2, compressor; 3, condenser; 4, expansion valve; 5, evaporator; 6, air conditioner return air outlet; 7, air conditioner outlet; 8, upper wind cover; 9, upper partition plate; 10, return air chamber; 11, outlet air chamber; 12, condensate collection tank; 13, drain pipe; 14, air outlet; 15, positive pressure fan; 16, blocking plate; 17, outlet air duct; 18, lower wind cover; 19, exhaust port; 20, air inlet; 21, air inlet chamber; 22, exhaust chamber; 23, lower partition plate; 24, fan; 25 , positive pressure airflow gap; 26, car roof; 27, notch; 28, sealing plate; 29, air outlet; 30, mounting plate; 31, inclined enclosure; 32, air conditioning control panel; 33, insertion slot; 34, upper cover; 35, annular protrusion; 36, limit stop ring; 37, installation protrusion; 38, folded edge; 39, PTC heater; 40, heat dissipation hole; 41, connecting screw; 42, air inlet opening; 43, adjustable air outlet; 44, exhaust hole; 45, air outlet opening; 46, middle straight plate portion; 47, inclined plate portion. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below through specific embodiments.

[0038] like Figures 1 to 8As shown, a thin air conditioner host of an electric vehicle includes a shell 1, on which a compressor 2, a condenser 3, an expansion valve 4 and an evaporator 5 connected to each other are fixed, and an air conditioner return air port 6 and an air conditioner outlet 7 are arranged at the lower end of the shell 1, and an upper wind cover 8 for covering the air conditioner return air port 6 and the air conditioner outlet 7 is arranged on the shell 1, and an upper partition plate 9 is arranged on the upper wind cover 8, and the upper partition plate 9 divides the wind cover into a return air chamber 10 and an outlet air chamber 11, the air conditioner return air port 6 is connected to the return air chamber 10, the air conditioner outlet 7 is connected to the outlet air chamber 11, and the evaporator 5 includes an evaporator The evaporator 5 body is provided with an evaporator 5 refrigerant inlet, an evaporator 5 refrigerant outlet and an evaporator 5 refrigerant flow channel connecting the evaporator 5 refrigerant inlet and the evaporator 5 refrigerant outlet. The evaporator 5 refrigerant inlet is connected to the refrigerant outlet of the expansion valve 4. The evaporator 5 refrigerant outlet is connected to the reflux port of the compressor 2 through a refrigerant return pipeline. The refrigerant outlet of the compressor 2 is connected to the inlet of the condenser 3. The outlet of the condenser 3 is connected to the refrigerant inlet of the expansion valve 4. A condensate collecting tank 12 for collecting condensate is provided below the air outlet chamber 11. The condensate collecting tank 12 has at least A drain pipe 13 is provided at one end, the evaporator 5 body is tilted and fixed in the air outlet chamber 11 toward the air outlet 7 of the air conditioner, and a blowing port 14 is provided on the upper partition plate 9. A positive pressure fan 15 for blowing air to the evaporator 5 body is fixed on the upper partition plate 9, and the air outlet of the positive pressure fan 15 is horizontally blown and corresponds to the blowing port 14. The installation height of the condenser 3 is lower than the installation height of the evaporator 5 body, and a blocking plate 16 for obliquely blocking the evaporator 5 from blowing air is provided along the downstream groove of the condensate collection tank 12, and the upper end of the blocking plate 16 and the upper part of the wind hood form an outlet air vent that is convenient for airflow to pass through. The air outlet duct 17 is connected to the air outlet 7 of the air conditioner, and the upper partition plate 9 is connected to the upstream groove edge of the condensed water collecting tank 12; a lower wind cover 18 covering the air conditioner return air outlet 6 and the air conditioner outlet 7 is installed below the shell 1, and the lower wind cover 18 is provided with an air inlet 20 and an air outlet 19, and the distribution range of the air outlet 19 is larger than the distribution range of the air inlet 20, and the lower wind cover 18 is provided with an air inlet chamber 21 and an air outlet chamber 22 corresponding to the air inlet 20 and the air outlet 19, and the air inlet chamber 21 corresponds to the air conditioner return air outlet 6, and the air outlet chamber 22 corresponds to the air conditioner exhaust outlet 19;The air conditioner main unit is installed on the top of the new energy vehicle, so that the airflow will be easily dispersed from top to bottom. When the positive pressure fan 15 blows air, the airflow blows out horizontally when the positive pressure fan 15 discharges air, and the evaporator 5 body is tilted toward the air outlet 7 of the air conditioner, so that one side of the evaporator 5 body will be aligned with the bottom of the air outlet chamber 11, and a part of it will also cover the condensate collection tank 12. In this way, when the airflow passes through the evaporator 5 body, the horizontal airflow will be tilted and blown out, with a large airflow and a fast wind speed. The airflow blows to the bottom of the air outlet chamber 11, which can effectively slow down the impact of the airflow flow. Condensed water will be generated on the outer surface of the evaporator 5 body. The condensed water will fall on the bottom of the air outlet chamber 11 when it is blown off, and finally enter the condensed water collection tank 12, and the blocking plate 16 can also effectively block the condensed water splashed to the outside, and then the condensed water flows into the condensed water collection tank 12 along the blocking plate 16 and is discharged through the drain pipe 13, which can effectively prevent the condensed water from being blown out from the air outlet 7 of the air conditioner; the condenser 3 includes a matching fan 24 for heat dissipation. ;

[0039] In this embodiment, the evaporator 5 body is fixed on the upstream side of the condensate collecting tank 12 and is tilted to cover the condensate collecting tank 12, and a positive pressure airflow gap 25 is formed between the downstream side of the evaporator 5 body and the upper opening of the condensate collecting tank 12 to facilitate the airflow to enter the condensate collecting tank 12; the condenser 3 is horizontally suspended inside the shell 1, and the bottom of the shell 1 is provided with heat dissipation holes 40 corresponding to the condenser 3; it can ensure that the condensate can quickly enter the condensate collecting tank 12 after being blown by the airflow, and the gas blown out by the positive pressure fan 15 will pass through the positive pressure airflow gap 25 into the condensate collecting tank 12, and then be blown out from the drain pipe 13, so that the condensate in the condensate collecting tank 12 can be discharged more smoothly; at the same time, the horizontal placement of the condenser 3 can reduce the installation height of the condenser 3 to a minimum, ensuring that it is lower than the evaporator 5 body, so that the whole can reach a thinner state.

[0040] like Figure 5As shown, a car roof 26 is further provided between the lower wind hood 18 and the outer shell 1, and a notch 27 for accommodating the air-conditioning return air vent 6 and the air-conditioning outlet 7 is provided on the car roof 26, and a sealing plate 28 for sealing the air inlet chamber 21 and the air exhaust chamber 22 is provided on the lower wind hood 18, and the sealing plate 28 is connected to the outer shell 1 by a connecting screw 41 to fix and press the car roof 26, and the lower wind hood 18 is matched with the sealing plate 28 by a screw connection, and an air inlet opening 42 for facilitating the communication between the air inlet chamber 21 and the return air chamber 10 is provided on the sealing plate 28, and an air outlet opening 45 for corresponding communication between the exhaust chamber 22 and the air outlet chamber 11 is provided; the connecting screw 41 can ensure that the sealing plate 28 and the lower wind hood 18 are fixed in sequence accurately and stably, and can effectively ensure the effective communication between the outer shell 1 and the lower wind hood 18. The notch 27 forms a chamber with the outer shell 1 and the lower wind cover 18 to accommodate the air return port 6 and the air outlet port 7 of the air conditioner, thereby facilitating the communication between the lower wind cover 18 and the outer shell 1 .

[0041] Furthermore, the sealing plate 28 is provided with an outlet pipe port 29 inserted into the air outlet 7 of the air conditioner, and the outlet pipe port 29 corresponds to the position of the air outlet opening 45, and the return air chamber 10, the notch 27 and the air inlet chamber 21 are connected to each other; in this way, the exhaust chamber 22 and the air outlet chamber 11 are effectively connected, and the blown gas can directly enter the exhaust chamber 22, thereby improving the efficiency of blowing. After the return air chamber 10, the notch 27 and the air inlet chamber 21 are connected, the chambers formed by the notch 27 are connected to the return air port 6 of the air conditioner, thereby increasing the efficiency of exhaust and the air intake.

[0042] In this embodiment, the lower wind hood 18 includes a downwardly concave mounting plate 30, and the mounting plate 30 is surrounded by an inclined enclosure 31 that transitions to the mounting plate 30. The air inlet chamber 21 and the air exhaust chamber 22 are separated by a lower partition plate 23 between the mounting plate 30 and the sealing plate 28. An air conditioning control panel 32 is provided on the mounting plate 30. The air inlet 20 and the air exhaust port 19 are distributed on the mounting plate 30 and the inclined enclosure 31. The distribution range of the air exhaust port 19 on the inclined enclosure is larger than that of the air inlet 20. When The airflow enters the lower wind hood 18 from the air outlet pipe port 29, and the airflow can be effectively gathered to facilitate quick air discharge. The exhaust port 19 includes six adjustable air outlets 43 that can be opened and closed and exhaust holes 44 installed on the inclined plate. The adjustable air outlets 43 and the exhaust holes 44 are respectively installed on three adjacent inclined enclosures 31, which can greatly improve the blowing range. The adjustable air outlets 43 and the air inlet 20 are installed on the mounting plate 30, and are separated by the lower partition plate 23. The air inlet 20 is installed on the remaining inclined enclosure 31.

[0043] like Figure 2As shown, inclined insertion slots 33 are provided on both side walls of the air outlet chamber 11, and the evaporator 5 body is inserted into the insertion slots 33. The upper wind hood 8 includes an upper wind hood 8 body fixed on the bottom plate of the shell 1, and an upper cover 34 is fixed to the upper end of the upper wind hood 8 body; the evaporator 5 body can be easily installed along the insertion slots 33, so that it can be quickly and accurately fixed, and the internal structure of the upper wind hood 8 body can be effectively protected by the upper cover 34.

[0044] like Figure 5 and Figure 7 As shown, an annular protrusion 35 is provided at the edge of the notch 27 of the automobile roof 26, and a limit ring 36 is provided below the bottom plate of the shell 1 to cover the annular protrusion 35. The automobile roof 26 is also provided with a mounting protrusion 37 for suspending the shell 1 on the automobile roof 26 to facilitate the heat dissipation of the condenser 3; the bottom plate of the shell 1 can be quickly installed above the automobile roof 26 through the annular protrusion 35 and the limit ring 36, and the shell 1 can be effectively suspended, and the heat emitted when the condenser 3 condenses can be effectively dissipated from the heat dissipation holes 40, thereby improving efficiency.

[0045] Furthermore, the upper end of the blocking plate 16 is provided with a folded edge 38 bent toward the upstream side; this can effectively protect the condensed water on the blocking plate 16, so when the air volume and air pressure of the positive pressure fan 15 can be increased, the condensed water can be effectively protected from being blown out.

[0046] like Figure 8 As shown, the outer contour of the lower wind hood 18 is a rectangle, and the lower partition plate 23 includes a middle straight plate portion 46 and an inclined plate portion 47 connecting the two ends of the middle straight plate portion 46, and the inclined plate portion 47 extends to two adjacent corners of the lower wind hood 18; the inclined plate portion 47 extending along the two adjacent corners of the lower wind hood 18 can expand the installation range of the exhaust port 19 as much as possible, and make full use of the space of the inclined plate portion 47, and the exhaust hole 44 is installed on the inclined enclosure 31 away from the regulating air outlet 43, close to the two corners of the lower wind hood 18, and it is also necessary to prevent the installation range of the air inlet 20 from being too small, resulting in too fast exhaust speed, so that the airflow just blown out is sucked back, affecting the use effect.

[0047] A PTC heater 39 is also provided on the upper wind hood downstream of the evaporator 5 body; in this way, when heating is needed in winter, the PTC heater 39 can be started for heating, and at this time, the positive pressure fan 15 blows the heated hot air into the car, thereby realizing heating in the car; the PTC heater 39 has a plate-like structure on the outside, which is snapped into the upper wind hood 8 and fixed with the top and bottom of the upper wind hood 8, so that the PTC heater 39 can be effectively pressed and the airflow can pass effectively, and the PTC heater 39 and the upper wind hood 8 are only snap-fitted together without any sealing, and the condensed water on the blocking plate 16 can flow into the condensed water collecting tank 12 through the gap between the PTC heater 39 and the upper wind hood 8 in turn.

[0048] When working, the air conditioner host is installed in the new energy vehicle At the top, when air conditioning is needed, the compressor 2 is started, and the compressor 2 compresses the refrigerant and enters the condenser 3. The refrigerant dissipates heat in the condenser 3 to form a liquid refrigerant. The liquid refrigerant is controlled and regulated by the expansion valve 4 to become a low-pressure liquid refrigerant and enters the evaporator 5 body. The refrigerant absorbs the surrounding heat energy on the evaporator 5 body and becomes a gaseous refrigerant. The positive pressure fan 15 just blows air to the evaporator 5 body, draws the air flow in the car through the air inlet 20, enters the air inlet chamber 21 and then enters the return air chamber 10. The positive pressure fan 15 blows out the air horizontally through the tilted evaporator 5 body, so that the air flow will be driven to blow out tilted, and the cold air brought out of the evaporator 5 body is blown out from the air conditioning outlet 7 through the air outlet pipe 29 into the exhaust chamber, and finally from the exhaust port 19 The condensed water will be discharged from the evaporator 5 body, and the air flow is large and the wind speed is fast, so condensed water will be generated on the outer surface of the evaporator 5 body. The evaporator 5 body is tilted to cover the bottom of the upper wind hood 8, and the air flow will drive the condensed water to fall and flow into the condensed water collecting tank 12. At the same time, the blocking plate 16 can also be used to block the splashing condensed water, and then the condensed water flows into the condensed water collecting tank 12 along the blocking plate 16 and is discharged from the drain pipe 13; since the evaporator box body is tilted, the condensed water that naturally drips when the positive pressure fan 15 stops will directly fall into the condensed water collecting tank 12; when heating is needed in winter, the PTC heater 39 can be started for heating. At this time, the positive pressure fan 15 blows the heated hot air into the car, thereby realizing heating in the car.

[0049] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. A thin air conditioner host of an electric vehicle, comprising a shell, on which a compressor, a condenser, an expansion valve and an evaporator connected to each other are fixed, an air conditioner return air port and an air conditioner outlet are arranged at the lower end of the shell, an upper wind cover for covering the air conditioner return air port and the air conditioner outlet is arranged on the shell, an upper partition plate is arranged on the upper wind cover, the upper partition plate divides the wind cover into a return air chamber and an outlet air chamber, the air conditioner return air port is communicated with the return air chamber, the air conditioner outlet is communicated with the outlet air chamber, the evaporator comprises an evaporator body, and the evaporator body has an upper An evaporator refrigerant inlet, an evaporator refrigerant outlet, and an evaporator refrigerant flow channel connecting the evaporator refrigerant inlet and the evaporator refrigerant outlet are provided, the evaporator refrigerant inlet is connected to the refrigerant outlet of the expansion valve, the evaporator refrigerant outlet is connected to the return port of the compressor through a refrigerant return pipeline, the refrigerant outlet of the compressor is connected to the inlet of the condenser, and the outlet of the condenser is connected to the refrigerant inlet of the expansion valve, a condensate collecting tank for collecting condensate is provided below the air outlet chamber, and at least one end of the condensate collecting tank is provided with a drain pipe, characterized in that: The evaporator body is fixed in the air outlet chamber at an angle toward the air conditioner outlet, the upper partition plate is provided with an air blowing port, a positive pressure fan for blowing air to the evaporator body is fixed on the upper partition plate, the air outlet of the positive pressure fan is arranged to blow air horizontally and corresponds to the air blowing port, the installation height of the condenser is lower than the installation height of the evaporator body, a blocking plate for obliquely blocking the air blowing of the evaporator is provided along the downstream groove of the condensate collecting groove, and an upper end of the blocking plate and the upper part of the wind cover form an air outlet for convenient airflow An air duct, the air outlet duct is connected with the air outlet of the air conditioner, and the upper partition plate is connected with the upstream groove edge of the condensate collecting tank; a lower wind hood covering the air conditioner return air outlet and the air conditioner outlet is installed below the shell, and the lower wind hood is provided with an air inlet and an air exhaust outlet, and the distribution range of the air exhaust outlet is larger than the distribution range of the air inlet, and the lower wind hood is provided with an air inlet chamber and an exhaust chamber corresponding to the air inlet and the air exhaust outlet, the air inlet chamber corresponds to the air conditioner return air outlet, and the exhaust chamber corresponds to the air conditioner exhaust outlet.

2. A thin air conditioner main unit for an electric vehicle as claimed in claim 1, characterized in that: The evaporator body is fixed on the upstream side of the condensate collecting tank and is tilted to cover the condensate collecting tank, and a positive pressure airflow gap is formed between the downstream side of the evaporator body and the upper opening of the condensate collecting tank to facilitate the airflow to enter the condensate collecting tank; the condenser is horizontally suspended inside the outer shell, and the bottom of the outer shell is provided with heat dissipation holes corresponding to the condenser.

3. A thin air conditioner main unit for an electric vehicle as claimed in claim 2, characterized in that: A car roof is also provided between the lower hood and the outer shell, a notch is provided on the car roof to accommodate an air-conditioning return air vent and an air-conditioning outlet, a sealing plate is provided on the lower hood to seal an air inlet chamber and an air exhaust chamber, the sealing plate is connected to the outer shell by connecting screws to fix and press the car roof, the lower hood cooperates with the sealing plate by screw connection, and an air inlet opening is provided on the sealing plate to facilitate communication between the air inlet chamber and the return air chamber, and an air outlet opening is provided to communicate with the exhaust chamber and the air outlet chamber accordingly.

4. A thin air conditioner main unit for an electric vehicle as claimed in claim 3, characterized in that: The sealing plate is provided with an air outlet pipe opening inserted into the air outlet of the air conditioner, the air outlet pipe opening corresponds to the position of the air outlet opening, and the return air chamber, the notch and the air inlet chamber are interconnected.

5. A thin air conditioner main unit for an electric vehicle as claimed in claim 4, characterized in that: The downwind hood includes a downwardly concave mounting plate, and the mounting plate is provided with inclined enclosures transitioning to the mounting plate around the mounting plate. The air inlet chamber and the air exhaust chamber are divided and separated by a lower partition plate between the mounting plate and the sealing plate. An air conditioning control panel is provided on the mounting plate, and the air inlet and exhaust outlet are distributed on the mounting plate and the inclined enclosure, and the distribution range of the exhaust outlet on the inclined enclosure is larger than that of the air inlet.

6. A thin air conditioner main unit for an electric vehicle as claimed in claim 5, characterized in that: Both side walls of the air outlet chamber are provided with inclined insertion slots, the evaporator body is inserted into the insertion slots, the upper wind hood comprises an upper wind hood body fixed on the bottom plate of the shell, and an upper cover is fixed on the upper end of the upper wind hood body.

7. A thin air conditioner main unit for an electric vehicle as claimed in claim 6, characterized in that: An annular protrusion is provided at the edge of the notch of the automobile roof, a limit ring is provided under the bottom plate of the shell to cover the annular protrusion, and an installation protrusion is also provided on the automobile roof to allow the shell to be suspended on the automobile roof for convenient heat dissipation of the condenser.

8. The electric vehicle thin air conditioner main unit as claimed in claim 7, characterized in that: The upper end portion of the baffle plate is provided with a folded edge bent toward the upstream side.

9. A thin air conditioner main unit for an electric vehicle as claimed in claim 8, characterized in that: The outer contour of the lower wind shield is rectangular, and the lower partition plate includes a middle straight plate portion and an inclined plate portion connecting two ends of the middle straight plate portion, and the inclined plate portion extends to two adjacent corners of the lower wind shield.

10. A thin air conditioner main unit for an electric vehicle as claimed in any one of claims 1 to 9, characterized in that: A PTC heater is also provided on the upper wind hood downstream of the evaporator body.

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