An ultra-thin induction type roof-mounted air-conditioning outdoor unit for vehicles

Abstract

The present invention discloses an ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle, comprising an internal space surrounded by a mask and a chassis, an induction fan is provided in the front part of the internal space, an auxiliary air inlet is provided on the front side of the mask, a heat exchanger and an injection chamber assembly are provided in the rear part of the internal space, the injection chamber assembly is located below the heat exchanger, the injection chamber assembly has a plurality of induction ports facing upwards respectively toward the air outlet surface of the heat exchanger, an air outlet is provided on the rear side of the mask corresponding to the rear part of the internal space, the air inlet end of the injection chamber assembly is connected with the air outlet end of the induction fan, the air outlet end of the injection chamber assembly is connected with the air outlet on the rear side of the mask, a plurality of main air inlets are provided on the top of the mask above the rear part of the internal space, and the air inlet surface of the heat exchanger faces upwards toward each main air inlet. After the entire air conditioner of the present invention is installed, an ultra-thin installation structure can be formed on the roof, which can maximize the air intake, and increase the total air intake while achieving ultra-thin installation.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted air conditioning, in particular to an ultra-thin induction type vehicle-mounted roof-mounted air conditioning outdoor unit. Background Art

[0002] With the increase in air-conditioning equipment for shelters, tanks and civilian vehicles, various new air-conditioning equipment are constantly emerging to meet the development needs of equipment and people. At present, air-conditioning equipment for shelters, tanks and civilian vehicles mainly adopts the principle of vapor compression refrigeration, that is, the refrigerant releases heat in the condenser to change into liquid, and absorbs heat in the evaporator to change into gas. When the outdoor unit needs to cool, the axial fan blows air to the condenser to displace heat and achieve heat exchange. For example, the air volume on the condensing side of a 4kW vehicle air-conditioning equipment is about 2200 m 3 / h, usually requires two axial flow fans, which takes up a lot of space. At the same time, the vehicle body structure is complex, and in actual design, it is often difficult to achieve due to some space size and weight restrictions. For example, in the face of the development of miniaturization, lightweight and modularization of special vehicles, the height requirements for vehicle air conditioners are getting thinner and thinner. The vertical arrangement of traditional axial flow fans affects the height, and the horizontal arrangement affects the heat exchange during driving.

[0003] At present, the induced ventilation system is not unfamiliar. It is used in some commercial air-conditioning terminals, underground parking garages, and train fresh air systems. It mainly uses an inducer to inhale fresh air or mixed part of the return air (usually called primary air or primary air volume), and ejects high-speed airflow (20m / s~30m / s) from the nozzle hole to produce an induced effect, inducing the inhalation of indoor air (usually called secondary air or secondary air volume), and finally mixing these two airs and sending them out. However, this induced ventilation system is rarely used in vehicle air conditioners. How to reasonably use the induction technology, while taking into account the changes in the air flow field during driving, and further compress the height dimension of the overhead air conditioner to improve the heat exchange performance of the air conditioner is worthy of attention. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to provide an ultra-thin induction type roof-mounted vehicle air-conditioning outdoor unit with reliable structure, compactness, high wind pressure and air volume.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An ultra-thin induction type roof-mounted air-conditioning outdoor unit for a vehicle, characterized in that it comprises a chassis and a mask, wherein the chassis is fixed to the roof of the vehicle, the mask is covered on the chassis, and an internal space is surrounded by the mask and the chassis, wherein the internal space is divided into a front part and a rear part according to the driving direction, an induction fan is arranged in the front part of the internal space, an auxiliary air inlet is arranged on the front side of the mask corresponding to the front part of the internal space, a heat exchanger and an injection chamber assembly are arranged in the rear part of the internal space, wherein the injection chamber assembly is located below the heat exchanger, the injection chamber assembly has a plurality of induction ports facing upward respectively, an air outlet surface of the heat exchanger faces downwardly towards each induction port of the injection chamber assembly, an air outlet is arranged on the rear side of the mask corresponding to the rear part of the internal space, the air inlet end of the injection chamber assembly is connected to the air outlet end of the induction fan, and the air outlet end of the injection chamber assembly is connected to the mask The air outlet on the rear side of the mask is connected, and a plurality of main air inlets are arranged on the top of the mask above the rear part of the internal space from front to back. The air inlet surface of the heat exchanger faces upward toward each main air inlet, and each main air inlet forms an inclination angle of the same size with the driving direction, and each main air inlet increases in position from front to back. When the vehicle is driving, the induced fan introduces fresh air through the auxiliary air inlet, and then sends it to the injection chamber assembly through the air inlet end of the injection chamber assembly. At the same time, the fresh air naturally flows to the air inlet surface of the heat exchanger through the main air inlet under the effect of the main air inlet increasing in sequence. After heat exchange in the heat exchanger, it enters the injection chamber assembly from each induced port of the injection chamber assembly through the air outlet surface of the heat exchanger. The two parts of fresh air are mixed by the injection chamber assembly and gradually decelerated and then sent out from the air outlet on the rear side of the mask.

[0007] The ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle is characterized in that: the injection chamber assembly comprises an injection bottom plate, a first injection guide plate, a second injection guide plate, and a third injection guide plate, wherein the first injection guide plate, the second injection guide plate, and the third injection guide plate are sequentially located above the injection bottom plate from front to back, and the first injection guide plate, the corresponding part of the injection bottom plate, and the corresponding parts on both sides of the mask form a first section of the injection chamber that gradually decreases from front to back, and the second injection guide plate, the corresponding part of the injection bottom plate, and the corresponding parts on both sides of the mask form a second section of the injection chamber that gradually decreases from front to back, and the third injection guide plate, the corresponding part of the injection bottom plate, and the corresponding parts on both sides of the mask form a third section of the injection chamber that does not change in size from front to back;

[0008] The front end of the first section of the injection chamber is connected to the air outlet end of the induced fan as the air inlet end of the injection chamber assembly, the rear end of the first section of the injection chamber is smaller than the front end of the second section of the injection chamber, and the rear end of the first section of the injection chamber is connected to the lower part of the front end of the second section of the injection chamber as the first injection port, and the upper part of the front end of the second section of the injection chamber is used as the first induced port, the rear end of the second section of the injection chamber is smaller than the front end of the third section of the injection chamber, and the rear end of the second section of the injection chamber is connected to the lower part of the front end of the third section of the injection chamber as the second injection port, and the upper part of the front end of the third section of the injection chamber is used as the second induced port, and the rear end of the third section of the injection chamber is connected to the air outlet on the rear side of the mask as the air outlet end of the injection chamber assembly;

[0009] The induced fan supplies air to the first section of the injection chamber, and increases the wind speed in the first section of the injection chamber to the first injection wind speed through the first guide plate, and then injects it from the first injection port to the second section of the injection chamber; the second section of the injection chamber simultaneously inhales the air from the first induced port, and after mixing in the second section of the injection chamber, forms the second injection wind speed through the second guide plate, and injects it from the second injection port to the third section of the injection chamber; the third section of the injection chamber simultaneously inhales the air from the second induced port, and after mixing in the third section of the injection chamber, forms the third injection wind speed through the third guide plate, and injects it from the air outlet end of the injection chamber assembly to the air outlet on the rear side of the mask; the first injection wind speed, the second injection wind speed and the third injection wind speed gradually decrease.

[0010] The ultra-thin induction type roof-mounted vehicle air-conditioning outdoor unit is characterized in that a plurality of flow equalizing plates extending in the front-to-back direction are respectively provided inside the first section, the second section and the third section of the injection chamber, and each flow equalizing plate is respectively fixed between the injection bottom plate and the corresponding guide plate, and the flow equalizing plates respectively make the airflow inside the first section, the second section and the third section of the injection chamber flow evenly.

[0011] The ultra-thin induction type roof-mounted vehicle air conditioner outdoor unit is characterized in that the air volume passing through the heat exchanger is the air volume flowing through the main air inlet, which is also the sum of the air inlet volumes of the first induction inlet and the second induction inlet.

[0012] The ultra-thin induction type roof-mounted vehicle air conditioner outdoor unit is characterized in that the air volume of the air outlet on the rear side of the mask is the sum of the air volume of the main air inlet and the air volume of the auxiliary air inlet.

[0013] The ultra-thin induction type roof-mounted vehicle air-conditioning outdoor unit is characterized in that: the main air inlets are all shutter structures, and the angles formed between the main air inlets and the driving direction are the same and are all within the range of 0° to 10°.

[0014] The ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle is characterized in that: the heat exchanger is a finned heat exchanger or a parallel flow heat exchanger, and its heat exchange area and air volume are determined according to the design.

[0015] The ultra-thin induction type vehicle roof-mounted air conditioner outdoor unit is characterized in that: the induction fan adopts a small air volume and high static pressure fan, and its air volume is usually 25% to 40% of the air volume required by the heat exchanger. The specific number of units depends on the design selection.

[0016] In the present invention, the main air inlet is arranged at the top of the mask, which avoids the problem of increased installation height of the air conditioner caused by air intake from the bottom. Therefore, after the entire air conditioner is installed, an ultra-thin installation structure can be formed on the roof. The installation height of ordinary 4 kW ceiling-mounted air conditioners currently on the market is about 350 mm, and the ultra-thin ones are about 245 mm. The present invention can achieve an overall installation height of 215 mm, which is significantly lower than the installation height of ultra-thin ceiling-mounted air conditioners in the prior art. In addition, the present invention reasonably designs the main air inlet structure so that the air from the main air inlet can naturally flow to the heat exchanger during driving, thereby maximizing the air intake and increasing the total air intake while achieving ultra-thin installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view of the structure of the present invention.

[0018] Figure 2 It is a top view of the partial structure of the injection chamber component of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, an ultra-thin induction type roof-mounted vehicle air-conditioning outdoor unit includes a chassis 4 and a mask 6. The chassis 4 is fixed to the roof of the vehicle, and the mask 6 is covered on the chassis 4. An internal space is surrounded by the mask 6 and the chassis 4. The internal space is divided into a front part and a rear part according to the driving direction. An induced fan 3 is provided in the front part of the internal space, and an auxiliary air inlet 5 is provided on the front side of the mask 6 corresponding to the front part of the internal space. A heat exchanger 8 and an injection chamber assembly 2 are provided in the rear part of the internal space, wherein the injection chamber assembly 2 is located below the heat exchanger 8.

[0021] The spray chamber assembly 2 includes a spray base plate 2.1, a first spray guide plate 2.2, a second spray guide plate 2.3, and a third spray guide plate 2.4. The first spray guide plate 2.1, the second spray guide plate 2.2, and the third spray guide plate 2.3 are sequentially located above the spray base plate 2.1 from front to back. The spray base plate 2.1 is adjacent to the chassis 4. The first spray guide plate 2.2 and the corresponding parts of the spray base plate 2.1 and the corresponding parts on both sides of the mask 6 form a first section of the spray chamber that gradually decreases from front to back. The second spray guide plate 2.3 and the corresponding parts of the spray base plate 2.1 and the corresponding parts on both sides of the mask 6 form a second section of the spray chamber that gradually decreases from front to back. The third spray guide plate 2.4 and the corresponding parts of the spray base plate 2.1 and the corresponding parts on both sides of the mask 6 form a third section of the spray chamber that does not change in size from front to back.

[0022] The front end of the first section of the injection chamber serves as the air inlet end of the injection chamber assembly and is connected to the air outlet end of the induced fan 3. The rear end of the first section of the injection chamber is smaller than the front end of the second section of the injection chamber, and is connected to the lower part of the front end of the second section of the injection chamber as a first injection port, and the upper part of the front end of the second section of the injection chamber serves as the first induced port. The rear end of the second section of the injection chamber is smaller than the front end of the third section of the injection chamber, and is connected to the lower part of the front end of the third section of the injection chamber as a second injection port, and the upper part of the front end of the third section of the injection chamber serves as the second induced port. An air outlet 1 is provided on the rear side of the mask 6 corresponding to the rear part of the internal space, and the rear end of the third section of the injection chamber serves as the air outlet end of the injection chamber assembly and is connected to the air outlet 1 on the rear side of the mask 6.

[0023] The first induction port and the second induction port of the injection chamber assembly 2 are respectively facing upwards, the air outlet surface of the heat exchanger 8 is downwardly facing the various induction ports of the injection chamber assembly 2, and a plurality of main air inlets 7 are provided on the top of the mask 6 above the rear part of the internal space from front to back, and the air inlet surface of the heat exchanger 8 is upwardly facing the various main air inlets 7, each of the main air inlets 7 forms an inclination angle θ of the same size with the driving direction, and the positions of the main air inlets 7 increase successively from front to back.

[0024] When the vehicle is running, the induced fan 3 introduces fresh air through the auxiliary air inlet 5, and then sends it to the first section of the injection chamber in the injection chamber assembly 2 through the air inlet end of the injection chamber assembly 2. At the same time, the fresh air naturally flows to the air inlet surface of the heat exchanger 8 through the main air inlet 7 under the effect of the main air inlet 7 being successively increased and distributed. After heat exchange in the heat exchanger 8, the fresh air enters the second section and the third section of the injection chamber from the first induced inlet and the second induced inlet of the injection chamber assembly 2 respectively through the air outlet surface of the heat exchanger 8. In the injection chamber, the induced fan 3 supplies air to the first section of the injection chamber, and increases the wind speed in the first section of the injection chamber to the first injection wind speed through the first guide plate, and then injects it from the first injection port to the second section of the injection chamber; the second section of the injection chamber simultaneously inhales the air from the first induced port, and after mixing in the second section of the injection chamber, forms the second injection wind speed through the second guide plate, and injects it from the second injection port to the third section of the injection chamber; the third section of the injection chamber simultaneously inhales the air from the second induced port, and after mixing in the third section of the injection chamber, forms the third injection wind speed through the third guide plate, and injects it from the air outlet end of the injection chamber assembly to the air outlet 1 on the rear side of the mask 6; the first injection wind speed, the second injection wind speed and the third injection wind speed gradually decrease, so that the two parts of fresh air are mixed through the injection chamber assembly and gradually decelerated and then sent out from the air outlet on the rear side of the mask.

[0025] like Figure 2 As shown, in the present invention, a plurality of flow equalizing plates 2.5 extending in the front-to-back direction are respectively provided inside the first section, the second section and the third section of the injection chamber, and each flow equalizing plate 2.5 is respectively fixed between the injection bottom plate 2.1 and the corresponding guide plate, and the flow equalizing plates 2.5 respectively make the airflow inside the first section, the second section and the third section of the injection chamber flow uniformly.

[0026] In the present invention, the air volume passing through the heat exchanger 8 is the air volume flowing through the main air inlet 7, which is also the sum of the air volume flowing through the first induction port and the second induction port. The air volume of the air outlet 1 at the rear side of the mask 6 is the sum of the air volume of the main air inlet 7 and the air volume of the auxiliary air inlet 5.

[0027] The main air inlets 7 of the present invention are all shutter structures, and the angles θ formed between the main air inlets 7 and the driving direction are the same in size and are all within the range of 0° to 10°.

[0028] The heat exchanger 8 of the present invention is a finned heat exchanger or a parallel flow heat exchanger, and its heat exchange area and air volume are determined according to the design.

[0029] The induced fan 3 of the present invention adopts a small air volume and high static pressure fan, and its air volume is usually 25% to 40% of the air volume required by the heat exchanger. The specific number of units is determined according to the design selection.

[0030] Further explanation:

[0031] The induction ratio of the present invention is the ratio of the air volume V2 of the main air inlet 7 to the air volume V1 of the auxiliary air inlet 5, which is generally designed to be between 2.5 and 4. The air volume V3 of the air outlet 1 = V1 + V2.

[0032] In the background technology, the air volume on the condensing side of a 4kW vehicle air conditioning unit is about 2200 m 3 / h. When the induction ratio is 4, it means that the design air volume of the induction fan 3 only needs to be 550 m 3 / h, static pressure 400 Pa, power supply DC24V, then only one double-head centrifugal fan is needed, power is about 200W, space size is about 320 (length) × 168 (height) × 140 (thickness). The specific selection of induced fan 3 depends on actual needs.

[0033] The first induction port of the second section of the injection chamber between the second guide plate 2.3 and the injection bottom plate 2.1 sucks the hot air of the front half of the heat exchanger 8, and the rear end of the second section of the injection chamber is the second injection port; the second induction port of the third section of the injection chamber between the third guide plate 2.4 and the injection bottom plate 2.1 sucks the hot air of the rear half of the heat exchanger 8, and the rear end of the third section of the injection chamber is the outlet end of the injection chamber assembly. The outdoor unit of the present invention can be expanded to an integral ceiling-mounted air conditioner, Figure 1 The space A shown can be designed as an electric control area etc. as required, but this is not the core content that needs to be protected by the present invention.

[0034] The embodiments described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. An ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle, characterized in that: The vehicle comprises a chassis and a mask, wherein the chassis is fixed to the roof of the vehicle, the mask is covered on the chassis, and an internal space is surrounded by the mask and the chassis, and the internal space is divided into a front part and a rear part according to the driving direction, an induced fan is arranged in the front part of the internal space, an auxiliary air inlet is arranged on the front side of the mask corresponding to the front part of the internal space, a heat exchanger and an injection chamber assembly are arranged in the rear part of the internal space, wherein the injection chamber assembly is located below the heat exchanger, the injection chamber assembly has a plurality of induced ports facing upward respectively, the air outlet surface of the heat exchanger faces downwardly towards each induced port of the injection chamber assembly, an air outlet is arranged on the rear side of the mask corresponding to the rear part of the internal space, the air inlet end of the injection chamber assembly is connected with the air outlet end of the induced fan, the air outlet end of the injection chamber assembly is connected with the air outlet on the rear side of the mask, and the internal A plurality of main air inlets are arranged on the top of the mask above the rear part of the space from front to back, and the air inlet surface of the heat exchanger faces upward toward each main air inlet, and each main air inlet forms an inclination angle of the same size with the driving direction, and each main air inlet increases in position from front to back; when the vehicle is driving, the induced fan introduces fresh air through the auxiliary air inlet, and then sends it to the injection chamber assembly through the air inlet end of the injection chamber assembly, and at the same time, the fresh air naturally flows to the air inlet surface of the heat exchanger through the main air inlet under the effect of the main air inlet increasing in sequence, and enters the injection chamber assembly from each induced port of the injection chamber assembly through the air outlet surface of the heat exchanger after heat exchange in the heat exchanger, and the two parts of fresh air are mixed and gradually decelerated by the injection chamber assembly and then sent out from the air outlet on the rear side of the mask; The injection chamber assembly comprises an injection base plate, a first injection guide plate, a second injection guide plate and a third injection guide plate. The first injection guide plate, the second injection guide plate and the third injection guide plate are sequentially arranged above the injection base plate from front to back. The first injection guide plate, the corresponding parts of the injection base plate and the corresponding parts on both sides of the mask form a first section of the injection chamber which gradually decreases from front to back. The second injection guide plate, the corresponding parts of the injection base plate and the corresponding parts on both sides of the mask form a second section of the injection chamber which gradually decreases from front to back. The third guide plate, the corresponding parts of the injection base plate and the corresponding parts on both sides of the mask form a third section of the injection chamber which does not change in size from front to back. The front end of the first section of the injection chamber is connected to the air outlet end of the induced fan as the air inlet end of the injection chamber assembly. The rear end of the first section of the injection chamber is smaller than the front end of the second section of the injection chamber. The rear end of the first section of the injection chamber is connected to the lower part of the front end of the second section of the injection chamber as the first injection port. The upper part of the front end of the second section of the injection chamber is used as the first induced port. The rear end of the second section of the injection chamber is smaller than The front end of the third section of the injection chamber, and the rear end of the second section of the injection chamber are connected to the lower part of the front end of the third section of the injection chamber as the second injection port, and the upper part of the front end of the third section of the injection chamber is used as the second induction port, and the rear end of the third section of the injection chamber is connected to the air outlet on the rear side of the mask as the air outlet end of the injection chamber assembly; the induction fan supplies air to the first section of the injection chamber, and the wind speed in the first section of the injection chamber is increased to the first injection wind speed through the first guide plate, and then injected from the first injection port to the second section of the injection chamber; the second section of the injection chamber simultaneously inhales the air from the first induction port, and after mixing in the second section of the injection chamber, the second injection wind speed is formed through the second guide plate, and then injected from the second injection port to the third section of the injection chamber; the third section of the injection chamber simultaneously inhales the air from the second induction port, and after mixing in the third section of the injection chamber, the third injection wind speed is formed through the third guide plate, and then injected from the air outlet end of the injection chamber assembly to the air outlet on the rear side of the mask; the first injection wind speed, the second injection wind speed and the third injection wind speed are gradually reduced; A plurality of flow equalizing plates extending in the front-to-back direction are respectively arranged inside the first section, the second section and the third section of the injection chamber, and each flow equalizing plate is respectively fixed between the injection bottom plate and the corresponding guide plate, and the flow equalizing plates respectively make the airflow inside the first section, the second section and the third section of the injection chamber flow uniformly; The air volume passing through the heat exchanger is the air volume flowing through the main air inlet, which is also the sum of the air volume flowing through the first induction inlet and the second induction inlet; The air volume of the air outlet on the rear side of the mask is the sum of the air volume of the main air inlet and the air volume of the auxiliary air inlet.

2. The ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle according to claim 1, characterized in that: The main air inlets are all shutter structures, and the angles formed between the main air inlets and the driving direction are the same in size and are all within the range of 0° to 10°.

3. The ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle according to claim 1, characterized in that: The heat exchanger is a finned heat exchanger or a parallel flow heat exchanger.

4. The ultra-thin induction type roof-mounted air conditioner outdoor unit for a vehicle according to claim 1, characterized in that: The induced fan is a small air volume and high static pressure fan, and its air volume is usually 25% to 40% of the air volume required by the heat exchanger.

Images