Split type air conditioner and diesel fork lift truck comprising same

Abstract

The invention relates to the technical field of air conditioners, and discloses a split type air conditioner and a diesel fork lift truck comprising the split type air conditioner, the split type air conditioner comprises a split assembly and a main engine, the split assembly is arranged in an engine cabin of the diesel fork lift truck and comprises a compressor, a condenser and a drying filter, the condenser is arranged between a radiator and a cooling fan of an engine, and the drying filter is arranged in the engine cabin of the diesel fork lift truck. The internal space of an original integrated air conditioner is optimized, a condenser fan, a circuit, a related controller and the like are omitted, the condenser is arranged between the cooling fan and the radiator of the engine, cooling air is preferentially distributed to the condenser for heat dissipation through the cooling fan, the heat dissipation efficiency is improved, and the heat dissipation efficiency is improved. The weight of the air conditioner host is greatly saved, a cantilever of the air conditioner host is shortened, the falling risk is reduced, the condenser and the evaporator are separated, and the influence of heat exchange between the condenser and the evaporator on the temperature adjusting capacity of the air conditioner is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, in particular to a split air conditioner and an internal combustion forklift containing the split air conditioner. Background Art

[0002] Internal combustion forklifts belong to general standard models and do not have built-in air conditioners. Air conditioners can only be installed externally. The existing assembly air conditioner scheme for internal combustion forklifts is as follows: An air conditioner compressor is installed in the engine compartment. After the refrigerant is compressed, it is transported to an integral air conditioner arranged outside the driver's cab, thereby adjusting the air conditioner temperature inside the driver's cab and allowing the driver to be in an environment with a comfortable temperature.

[0003] Although this integral installation of the air conditioner basically meets the requirements for vehicle-mounted air conditioners, there are the following deficiencies: 1. The condenser and its two cooling fans are placed at the rear end of the integral air conditioner, increasing the overall weight of the air conditioner and the cantilever length after installation, thereby affecting the stress structure of the air conditioner. Under long-term vibration conditions, the installation surface is prone to fracture, posing a risk of the integral air conditioner falling.

[0004] 2. The heat exchange between the condenser and the evaporator is completely opposite. Ideally, the two should be completely isolated. Although there is an air isolation plate between them, the metal shell of the air conditioner still plays a heat conduction role, thereby reducing the ability of the air conditioner to adjust the temperature.

[0005] 3. The two cooling fans placed on the top of the integral air conditioner will be affected by the vibration of the whole vehicle during operation, reducing the working life or being prone to failure. Coupled with the overly long cantilever, the impact is greater. Summary of the Invention

[0006] The purpose of the present invention is to provide a split air conditioner and an internal combustion forklift containing the split air conditioner to solve the problems in the prior art, which can reduce the volume of the air conditioner, shorten the cantilever length, and eliminate the influence between the condenser and the evaporator.

[0007] The present invention provides a split air conditioner applied to an internal combustion forklift, including a split component and a main unit. The split component is arranged in the engine compartment of the internal combustion forklift, and the main unit is arranged at the rear end of the driver's cab of the internal combustion forklift, wherein: The split component includes a compressor, a condenser, and a dryer filter. The condenser is arranged between the radiator and the cooling fan of the engine.

[0008] As described above for a split air conditioner, preferably, a wind collecting cover is provided on one side of the radiator facing the cooling fan. The wind collecting cover has an accommodating space. The condenser is arranged in the accommodating space, and the condenser is connected to the radiator through a fixing component.

[0009] A split air conditioner as described above, wherein, preferably, the fixing assembly includes a first bracket, a second bracket and a fixing member. The first brackets are symmetrically arranged on both sides of the condenser, the second bracket is arranged at the corresponding position of the radiator, and the first bracket and the second bracket are connected by the fixing member.

[0010] A split air conditioner as described above, wherein, preferably, the fixing member includes a bolt. One side of the second bracket facing the first bracket has a bent portion which is away from the radiator. The bolt sequentially penetrates through the first bracket, the bent portion and the radiator to fixedly connect the condenser and the radiator.

[0011] A split air conditioner as described above, wherein, preferably, a rubber pad is arranged between the bent portion and the first bracket, and gaskets are respectively arranged on the opposite sides of the bent portion and the first bracket.

[0012] A split air conditioner as described above, wherein, preferably, a first input joint and a first output joint are respectively arranged on the condenser. Both the first input joint and the first output joint penetrate through the air collecting hood and extend to the outside of the air collecting hood.

[0013] A split air conditioner as described above, wherein, preferably, the compressor is arranged on one side of the engine. The drying filter is arranged on the compressor through a third bracket, and a second input joint and a second output joint are respectively arranged on the drying filter.

[0014] A split air conditioner as described above, wherein, preferably, an expansion valve, an evaporator and a blower are arranged in the main unit. The expansion valve is connected to the evaporator. An expansion valve pipe is arranged at one end of the expansion valve away from the evaporator. The expansion valve pipe is connected to the drying filter. The blower is arranged on the side of the main unit facing the driver's cab.

[0015] A split air conditioner as described above, wherein, preferably, a compressor input pipe is further arranged on one side of the main unit. One end of the compressor input pipe is connected to the evaporator, and the other end is connected to the compressor.

[0016] The present invention also provides an internal combustion forklift containing the above split air conditioner.

[0017] Compared with the prior art, the present invention optimizes the internal space of the original integrated air conditioner, cancels the condenser fan, circuit and related controllers, etc., and arranges the condenser between the engine cooling fan and the radiator. The cooling air is preferentially distributed to the condenser by the cooling fan for heat dissipation, which greatly saves the weight of the air conditioner main unit, shortens the cantilever of the air conditioner main unit, reduces the falling risk, and separates the condenser from the evaporator to avoid heat exchange between the two, which affects the temperature adjustment ability of the air conditioner. Description of the Drawings

[0018] Figure 1 is the installation schematic diagram of the existing integrated air conditioner; Figure 2 is the internal structure diagram of the existing integrated air conditioner; Figure 3 is the structural schematic diagram of an internal combustion forklift containing a split air conditioner provided by an embodiment of the present invention; Figure 4 is the installation schematic diagram of the condenser, dryer filter and compressor provided by an embodiment of the present invention; Figure 5 is the installation schematic diagram of the condenser and the radiator provided by an embodiment of the present invention; Figure 6 is the structural schematic diagram of the fixing component provided by an embodiment of the present invention; Figure 7 is Figure 6 the enlarged view of part A of Figure 8 is the top view sectional view of the condenser and the radiator provided by an embodiment of the present invention; Figure 9 is the structural schematic diagram of the dryer filter provided by an embodiment of the present invention; Figure 10 is the structural schematic diagram of the main unit provided by an embodiment of the present invention.

[0019] Description of the Reference Numerals: 10 - Compressor, 100 - Compressor Input Pipe; 11 - Condenser, 110 - First Input Joint, 111 - First Output Joint; 12 - Dryer Filter, 120 - Second Input Joint, 121 - Second Output Joint, 122 - Third Bracket; 13 - Main Unit; 14 - Expansion Valve, 140 - Expansion Valve Pipe; 15 - Evaporator; 16 - Blower; 20 - Engine, 21 - Radiator, 22 - Cooling Fan, 23 - Air Collector Hood; 30 - Fixed component, 31 - First bracket, 32 - Second bracket, 320 - Bending part, 33 - Fastening piece, 34 - Rubber pad, 35 - Spacer.

[0020] 40 - Cockpit; 50 - Integrated air conditioner, 51 - Condenser fan, 52 - Partition board. Detailed implementation

[0021] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0022] An internal combustion forklift does not come with an air conditioner itself, and the operating environment of the forklift is usually outdoors. Therefore, an air conditioner is usually installed outside the internal combustion forklift to provide cooling or heating for the cockpit 40. See Figure 1 and Figure 2 As shown, in the existing integrated air conditioner 50, there are a condenser 11, a dryer filter 12, an expansion valve 14, an evaporator 15, a condenser fan 51, etc. Among them, the heat dissipation of the condenser 11 is the core link of the refrigeration cycle of the forklift air conditioner. In order to ensure heat dissipation, one or two condenser fans 51 are specially provided for the condenser 11. Therefore, the overall volume of the integrated air conditioner 50 is large and the cantilever is long, and it is likely to fall or be damaged due to the vibration of the forklift during the operation of the forklift. Moreover, the condenser 11 and the evaporator 15 are only separated by a partition board 52, resulting in the heat of the condenser 11 being directly transferred to the vicinity of the evaporator 15, weakening the heat absorption capacity of the evaporator 15 and significantly reducing the temperature control ability of the air conditioner.

[0023] Therefore, as shown in Figure 3 and Figure 4 The present invention provides a split air conditioner, including a split component and a main unit 13. The split component is arranged in the engine 20 engine compartment of the internal combustion forklift, and the main unit 13 is arranged at the rear end of the cockpit 40 of the internal combustion forklift, where: See Figure 4As shown in the figure, the split component includes a compressor 10, a condenser 11, and a dryer filter 12. The condenser 11 is arranged between the radiator 21 of the engine 20 and the radiator fan 22. In this application, the original condenser fan 51 is cancelled, and the condenser 11 and the dryer filter 12 are arranged in the engine compartment of the engine 20. Since the original integrated air conditioner 50 reduces components such as the condenser fan 51, the condenser 11, and the dryer filter 12, it saves parts and their controllers, reduces the weight of the air conditioner, greatly shortens the cantilever length, and reduces the risk of the air conditioner falling. This application uses the original radiator fan 22 of the internal combustion forklift to cool the condenser 11. The air flow first passes through the condenser 11 from the radiator fan 22, and then passes through the fins of the radiator 21. The cooling air is preferentially distributed to the condenser 11 for heat dissipation. The condenser 11 of the air conditioner is integrated with the vehicle cooling system of the forklift. The condenser 11 does not require a dedicated condenser fan 51, and uses the vehicle cooling system for heat dissipation, saving the parts of the air conditioning system and further improving the utilization rate of the functions of the vehicle cooling system; In addition, since there is no longer a restriction on the internal space of the integrated air conditioner, there are more options for the selection of the condenser 11 and the dryer filter 12, and the temperature adjustment ability of the air conditioner can be further enhanced. Moreover, the condenser 11 and the evaporator 15 are separated, which can also avoid their heat conduction and improve the temperature adjustment ability of the air conditioner.

[0024] The main unit 13 is arranged at the rear end of the driver's cab 40 of the forklift. The compressor 10, the condenser 11, the dryer filter 12, and the main unit 13 are sequentially connected by pipelines. In this embodiment, the main unit 13 is arranged above the rear of the driver's cab 40, closer to the engine compartment of the engine 20, which can reduce the energy loss during the pipeline transportation. In addition, the air outlet of the air conditioner is located on the upper side of the driver's cab 40. When cooling, after the cold air blows out from the air conditioner, the air flows and forms a cycle from above the driver's cab 40 downwards, which can achieve the cooling effect faster. The connecting pipelines of each component in this application all use high-pressure rubber hoses.

[0025] In a feasible implementation manner, refer to Figures 4 - 8As shown in the figure, an air collecting hood 23 is provided on one side of the radiator 21 facing the cooling fan 22. The air collecting hood 23 has an accommodating space, and the condenser 11 is arranged in the accommodating space. The condenser 11 and the radiator 21 are connected by a fixing assembly 30. The air collecting hood 23 can guide the airflow blown out by the cooling fan 22 to concentrate on passing through the condenser 11 and the radiator 21, reduce the airflow diffusion and turbulence, and form a stable high-speed airflow channel. The air collecting hood 23 is designed as a flared opening facing the cooling fan 22 to increase the air intake volume. Connecting the condenser 11 and the radiator 21 through the fixing assembly 30 and integrating them in the air collecting hood 23 can form a modular structure, reduce the overall volume of the system, and do not occupy the original internal space of the engine 20. The condenser 11 and the radiator 21 are rigidly connected. Combining with the supporting effect of the air collecting hood 23, while increasing the stability of the condenser 11, it can also reduce the influence brought by vibration.

[0026] The condenser 11 and the radiator 21 can be welded or movably connected. In this embodiment, the fixing assembly 30 is connected in a detachable manner. Specifically, refer to Figures 6 - 7 As shown in the figure, the fixing assembly 30 includes a first bracket 31, a second bracket 32, and a fixing member 33. The first brackets 31 are symmetrically arranged on both sides of the condenser 11, the second brackets 32 are arranged at corresponding positions of the radiator 21, and the first brackets 31 and the second brackets 32 are connected by the fixing member 33.

[0027] Refer to Figure 7 As shown in the figure, further, the fixing member 33 includes a bolt. One side of the second bracket 32 facing the first bracket 31 has a bent portion 320 that is away from the radiator 21. The bolt sequentially passes through the first bracket 31, the bent portion 320, and the radiator 21 to fixedly connect the condenser 11 and the radiator 21. In the embodiment provided in this application, the connection methods of the first bracket 31 and the second bracket 32 with the condenser 11 and the radiator 21 are welding respectively, and then the two are fixed by a detachable bolt. In order to ensure that there is sufficient distance between the condenser 11 and the radiator 21 to avoid affecting their heat dissipation effects, the bent portion 320 separates a certain distance between the condenser 11 and the radiator 21 to ensure the airflow circulation. It should be noted that in order to increase the heat dissipation effect, the heat dissipation effect can also be increased by increasing the area of the cooling fan 22 or the thermal conductivity of the heat-conducting material of the radiator 21, thereby increasing the heat dissipation airflow and the heat dissipation surface area.

[0028] Refer to Figure 7 As shown in the figure, a rubber pad 34 is arranged between the bent portion 320 and the first bracket 31, and gaskets 35 are respectively arranged on the opposite sides of the bent portion 320 and the first bracket 31. The elastic buffer of the rubber pad 34 is used to eliminate the gap, and the gaskets 35 are used for anti-loosening and positioning assistance.

[0029] In this embodiment, refer to Figure 9As shown, a first input joint 110 and a first output joint 111 are respectively arranged on the condenser 11. Both the first input joint 110 and the first output joint 111 penetrate through the air collecting hood 23 and extend to the outside of the air collecting hood 23. In this application, the first input joint 110 and the first output joint 111 are arranged on the same side of the air collecting hood 23 and close to the drying filter 12, reducing the pipeline length and avoiding energy loss.

[0030] See Figure 4 and Figure 9 As shown, the compressor 10 is arranged on one side of the engine 20. The drying filter 12 is arranged on the compressor 10 through the third bracket 122, and a second input joint 120 and a second output joint 121 are respectively arranged on the drying filter 12. The compressor 10 and the drying filter 12 are arranged as close as possible to the condenser 11, which can reduce the energy loss during pipeline transportation.

[0031] In this embodiment, see Figure 10 As shown, an expansion valve 14, an evaporator 15 and a blower 16 are arranged in the main unit 13. The expansion valve 14 is connected to the evaporator 15. One end of the expansion valve 14 away from the evaporator 15 is provided with an expansion valve pipe 140, and the expansion valve pipe 140 is connected to the drying filter 12. The blower 16 is arranged on the side of the main unit 13 facing the cockpit 40. The condenser fan 51 is cancelled, and structures such as the condenser 11 are arranged in the engine 20 engine compartment. The structure inside the main body is optimized, the cantilever length is shortened, the space between the expansion valve 14 and the evaporator 15 is enlarged, and the model selection range is larger, which is beneficial to improving the air conditioning performance. One end of the expansion valve pipe 140 connected to the drying filter 12 extends to the outside of the main body and is connected to the drying filter 12 through a pipeline. The blower 16 is used to exchange heat between the air inside the cockpit 40 and the air on the surface of the evaporator 15.

[0032] See Figure 10 As shown, a compressor input pipe 100 is also arranged on one side of the main unit 13. One end of the compressor input pipe 100 is connected to the evaporator 15, and the other end is connected to the compressor 10. One end of the compressor 10 output pipe connected to the compressor 10 extends to the outside of the main body and is on the same side as the expansion valve pipe 140.

[0033] In the embodiment provided in the present application, the compressor 10 compresses the refrigerant, and the compressed refrigerant is input to the first input connector 110 through a pipeline, enters the condenser 11, and dissipates heat. The cooling fan 22 of the engine 20 blows air to take away the heat of the condenser 11. The cooled refrigerant is transported to the second input connector 120 through a pipeline through the first output connector 111, enters the drying filter 12, and dries and filters the refrigerant. Then, it is transported to the expansion valve pipe 140 through a pipeline through the second output connector 121, and enters the expansion valve 14. The refrigerant quickly evaporates into gas and enters the evaporator 15 to evaporate and absorb heat. The blower 16 exchanges the air inside the cockpit 40 with the air on the surface of the evaporator 15, so as to regulate the air temperature inside the cockpit 40. After the refrigerant passes through the evaporator 15, the temperature gradually increases. After approaching the internal temperature of the cockpit 40, it returns to the compressor 10 through the compressor input pipe 100 and then performs the next cycle.

[0034] See also Figure 3 As shown, the present invention also provides an internal combustion forklift, which includes the above-mentioned split air conditioner. The split air conditioner can be used for any internal combustion forklift with air conditioning installation conditions. The split assembly is arranged in the engine compartment 20 of the internal combustion forklift, and the cooling system of the internal combustion forklift is used to dissipate heat from the condenser 11, which greatly reduces the weight and cantilever length of the main engine 13, avoids the risk of falling of the main engine 13 due to factors such as vibration, and improves safety. The main engine 13 is arranged at the upper rear of the cockpit 40, and a ventilation system is arranged inside the cockpit 40.

[0035] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A split air conditioner, applied to an internal combustion forklift, characterized in that It includes a split component and a main unit. The split component is arranged in the engine compartment of an internal combustion forklift, and the main unit is arranged at the rear end of the driver's cab of the internal combustion forklift. Among them: The split component includes a compressor, a condenser and a dryer filter. The condenser is arranged between the radiator and the cooling fan of the engine.

2. The split air conditioner according to claim 1, characterized in that, A wind collecting cover is arranged on one side of the radiator facing the cooling fan. The wind collecting cover has an accommodating space. The condenser is arranged in the accommodating space, and the condenser is connected to the radiator through a fixing component.

3. The split air conditioner according to claim 2, wherein, The fixing component includes a first bracket, a second bracket and a fixing piece. The first brackets are symmetrically arranged on both sides of the condenser, the second bracket is arranged at the corresponding position of the radiator, and the first bracket and the second bracket are connected through the fixing piece.

4. The split air conditioner according to claim 3, wherein, The fixing piece includes a bolt. One side of the second bracket facing the first bracket has a bending part. The bending part is away from the radiator. The bolt sequentially penetrates through the first bracket, the bending part and the radiator to fixedly connect the condenser and the radiator.

5. The split air conditioner according to claim 4, characterized in that, A rubber pad is arranged between the bending part and the first bracket, and gaskets are respectively arranged on the opposite sides of the bending part and the first bracket.

6. The split air conditioner according to claim 2, wherein A first input joint and a first output joint are respectively arranged on the condenser. Both the first input joint and the first output joint penetrate through the wind collecting cover and extend to the outside of the wind collecting cover.

7. The split air conditioner according to claim 1, wherein The compressor is arranged on one side of the engine. The dryer filter is arranged on the compressor through a third bracket, and a second input joint and a second output joint are respectively arranged on the dryer filter.

8. The split air conditioner according to claim 1, characterized in that, An expansion valve, an evaporator and a blower are arranged in the main unit. The expansion valve is connected to the evaporator. One end of the expansion valve away from the evaporator is provided with an expansion valve pipe. The expansion valve pipe is connected to the dryer filter. The blower is arranged on the side of the main unit facing the driver's cab.

9. The split air conditioner according to claim 1, characterized in that, A compressor input pipe is further arranged on one side of the main unit. One end of the compressor input pipe is connected to the evaporator, and the other end is connected to the compressor.

10. An internal combustion forklift, characterized in that, A split air conditioner according to any one of claims 1-9.

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