Split type air conditioner and internal combustion fork truck comprising the same

Abstract

The utility model relates to air conditioning technical field discloses a split type air conditioner and contain its split type air conditioner's internal combustion fork-lift truck, including split component and host computer, split component is located in the engine compartment of internal combustion fork-lift truck, split component includes compressor, condenser and drying filter, condenser is located between radiator and heat dissipation fan of engine, host computer is located in the rear end of the cockpit of internal combustion fork-lift truck, the utility model carries out optimization to the original integral type air conditioner internal space, cancelled condenser fan, circuit and relevant controller etc., and set up condenser between heat dissipation fan and radiator of engine, utilize heat dissipation fan and give priority to to condenser with cooling air and radiate, greatly saved the weight of air conditioning host computer, makes air conditioning host computer cantilever shorten, reduces the risk of falling, and condenser is separated with evaporator, avoids the heat exchange between both, influences the ability of the temperature regulation of air conditioning.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a split-type air conditioner and an internal combustion forklift containing the split-type air conditioner. Background Technology

[0002] Internal combustion forklifts are standard models and do not have built-in air conditioning. They can only be equipped with external air conditioning. The existing air conditioning solution for internal combustion forklifts is to install an air conditioning compressor in the engine compartment. After the refrigerant is compressed, it is delivered to an integrated air conditioner located outside the cab, thereby regulating the temperature inside the cab and keeping the driver in a comfortable temperature environment.

[0003] While this type of integrated air conditioner basically meets the requirements for vehicle air conditioning, it has the following shortcomings:

[0004] 1. The condenser and its two cooling fans are located at the rear of the integrated air conditioner, which increases the overall weight of the air conditioner and the length of the cantilever after installation. This affects the stress structure of the air conditioner. Under long-term vibration conditions, the mounting surface is prone to breakage, which may cause the integrated air conditioner to fall.

[0005] 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 insulation plate between them, the metal casing of the air conditioner still plays a role in heat conduction, thereby reducing the air conditioner's ability to regulate temperature.

[0006] 3. The two cooling fans located on top of the integrated air conditioner are affected by the vibration of the whole vehicle when they are working, which reduces their service life or makes them prone to failure. In addition, the long cantilever arm has an even greater impact. Utility Model Content

[0007] The purpose of this invention is to provide a split-type air conditioner and an internal combustion forklift containing the split-type air conditioner, so as to solve the problems in the prior art, reduce the size of the air conditioner, shorten the cantilever length, and eliminate the influence between the condenser and the evaporator.

[0008] This utility model provides a split-type air conditioner for use in an internal combustion forklift, comprising a split assembly and a main unit. The split assembly is located in the engine compartment of the internal combustion forklift, and the main unit is located at the rear of the driver's cab of the internal combustion forklift.

[0009] The separate assembly includes a compressor, a condenser, and a dryer filter, with the condenser located between the engine's radiator and cooling fan.

[0010] In the split-type air conditioner described above, preferably, the side of the radiator facing the cooling fan is provided with an air collecting shroud, the air collecting shroud has a receiving space, the condenser is disposed in the receiving space, and the condenser is connected to the radiator by a fixing component.

[0011] In the split-type air conditioner described above, preferably, the fixing assembly includes a first bracket, a second bracket, and a fixing member. The first bracket is symmetrically arranged on both sides of the condenser, and the second bracket is arranged at the corresponding position of the radiator. The first bracket and the second bracket are connected by the fixing member.

[0012] In a split-type air conditioner as described above, preferably, the fixing member includes a bolt, the side of the second bracket facing the first bracket has a bent portion, the bent portion being away from the radiator, and the bolt sequentially passes through the first bracket, the bent portion, and the radiator to fix the condenser and the radiator together.

[0013] In the split-type air conditioner described above, preferably, a rubber pad is provided between the bent portion and the first bracket, and gaskets are respectively provided on the opposite sides of the bent portion and the first bracket.

[0014] In the split-type air conditioner described above, preferably, the condenser is provided with a first input connector and a first output connector, both of which penetrate the air collector cover and extend to the outside of the air collector cover.

[0015] In the split-type air conditioner described above, preferably, the compressor is located on one side of the engine, the dryer filter is mounted on the compressor via a third bracket, and the dryer filter is respectively provided with a second input connector and a second output connector.

[0016] In the split-type air conditioner described above, preferably, the main unit is provided with an expansion valve, an evaporator, and a blower. The expansion valve is connected to the evaporator, and an expansion valve pipe is provided at the end of the expansion valve away from the evaporator. The expansion valve pipe is connected to the dryer filter, and the blower is located on the side of the main unit facing the cockpit.

[0017] In the split-type air conditioner described above, preferably, a compressor input pipe is also provided on one side of the main unit, one end of which is connected to the evaporator and the other end is connected to the compressor.

[0018] This utility model also provides an internal combustion forklift that includes the aforementioned split-type air conditioner.

[0019] Compared with the existing technology, this utility model optimizes the internal space of the original integrated air conditioner, eliminates the condenser fan, wiring and related controllers, and places the condenser between the engine cooling fan and the radiator. The cooling fan prioritizes the distribution of cooling air to the condenser for heat dissipation, which greatly saves the weight of the air conditioner unit, shortens the cantilever of the air conditioner unit, reduces the risk of falling, and separates the condenser and evaporator to avoid heat exchange between the two, which would affect the air conditioner's ability to regulate temperature. Attached Figure Description

[0020] Figure 1 This is an installation diagram of an existing integrated air conditioner;

[0021] Figure 2 This is a diagram of the internal structure of an existing integrated air conditioner;

[0022] Figure 3 This is a schematic diagram of the structure of an internal combustion forklift containing a split-type air conditioner provided in an embodiment of this utility model;

[0023] Figure 4 This is an installation diagram of the condenser, dryer filter and compressor provided in an embodiment of this utility model;

[0024] Figure 5 This is an installation diagram of the condenser and radiator provided in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the fixing component provided in an embodiment of this utility model;

[0026] Figure 7 yes Figure 6 Enlarged view of point A;

[0027] Figure 8 This is a top cross-sectional view of the condenser and radiator provided in an embodiment of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the drying filter provided in an embodiment of this utility model;

[0029] Figure 10 This is a schematic diagram of the host structure provided in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10 - Compressor, 100 - Compressor inlet pipe;

[0032] 11-Condenser, 110-First input connector, 111-First output connector;

[0033] 12-Dryer filter, 120-Second input connector, 121-Second output connector, 122-Third bracket;

[0034] 13-Host;

[0035] 14 - Expansion valve, 140 - Expansion valve pipe;

[0036] 15 - Evaporator;

[0037] 16-Blower;

[0038] 20-Engine, 21-Radiator, 22-Cooling fan, 23-Air collector cover;

[0039] 30-Fixing component, 31-First bracket, 32-Second bracket, 320-Bending part, 33-Fixing element, 34-Rubber pad, 35-Gasket.

[0040] 40 - Cockpit;

[0041] 50 - Integrated air conditioner, 51 - Condenser fan, 52 - Partition. Detailed Implementation

[0042] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] Internal combustion forklifts do not have built-in air conditioning, and since forklifts typically operate outdoors, air conditioning is usually installed externally to provide cooling or heating for the cab. (See [link to relevant documentation]). Figure 1 and Figure 2 As shown, the existing integrated air conditioner 50 is equipped with a condenser 11, a dryer filter 12, an expansion valve 14, an evaporator 15, and a condenser fan 51. Among them, the heat dissipation of the condenser 11 is the core link of the forklift air conditioner's cooling cycle. In order to ensure heat dissipation, one or two condenser fans 51 are specially set up for the condenser 11. Therefore, the entire integrated air conditioner 50 is large in size and has a long cantilever. During forklift operation, it is easy to fall or be damaged by forklift vibration. In addition, the condenser 11 and the evaporator 15 are only isolated by a partition 52, which causes the heat of the condenser 11 to be directly transferred to the vicinity of the evaporator 15, weakening the heat absorption capacity of the evaporator 15 and significantly reducing the air conditioner's temperature regulation capacity.

[0044] Therefore, see Figure 3 and Figure 4 As shown, this utility model provides a split-type air conditioner, including a split assembly and a main unit 13. The split assembly is located in the engine compartment 20 of the internal combustion forklift, and the main unit 13 is located at the rear end of the driver's cab 40 of the internal combustion forklift.

[0045] See Figure 4As shown, the separate components include a compressor 10, a condenser 11, and a dryer filter 12. The condenser 11 is located between the radiator 21 and the cooling fan 22 of the engine 20. This application eliminates the original condenser fan 51 and places the condenser 11 and the dryer filter 12 inside the engine compartment of the engine 20. Since the original integrated air conditioner 50 reduces components such as the condenser fan 51, condenser 11, and dryer filter 12, it saves parts and their controllers, reduces the weight of the air conditioner, and greatly shortens the cantilever length, reducing the risk of the air conditioner falling. This application utilizes the original cooling fan 22 of the internal combustion forklift to cool the condenser 11. The airflow first flows from the cooling fan 22 through the condenser 11 and then through the heat sink of the radiator 21. Cooling air is preferentially distributed to the condenser 11 for heat dissipation. The air conditioner's condenser 11 is integrated with the forklift's overall vehicle cooling system. The condenser 11 does not need to be specially equipped with a condenser fan 51. It utilizes the overall vehicle cooling system for heat dissipation, saving parts of the air conditioning system and further improving the functional utilization rate of the overall vehicle cooling system.

[0046] Furthermore, since the internal space of the integrated air conditioner is no longer limited, there are more options for selecting the condenser 11 and the dryer filter 12, and the air conditioner's temperature regulation capability can be further enhanced. Moreover, separating the condenser 11 from the evaporator 15 avoids heat conduction between the two, improving the air conditioner's temperature regulation capability.

[0047] The main unit 13 is located at the rear of the forklift's cab 40. The compressor 10, condenser 11, dryer filter 12, and main unit 13 are connected sequentially via pipes. In this embodiment, the main unit 13 is located above and behind the cab 40, closer to the engine compartment 20, which reduces energy loss during pipe transport. Furthermore, the air conditioning vents are located on the upper side of the cab 40; when cooling, cold air is blown out from the air conditioner, creating airflow and forming a circulation from the top of the cab 40 downwards, achieving a faster cooling effect. All connecting pipes for the components in this application use high-pressure hoses.

[0048] In one possible implementation, see [link to implementation details]. Figures 4-8As shown, the radiator 21 has an air intake shroud 23 on the side facing the cooling fan 22. The air intake shroud 23 has a receiving space, within which the condenser 11 is housed, and the condenser 11 is connected to the radiator 21 via a fixing component 30. The air intake shroud 23 guides the airflow from the cooling fan 22 to concentrate through the condenser 11 and radiator 21, reducing airflow diffusion and turbulence, and forming a stable high-speed airflow channel. The air intake shroud 23 has a flared design with the opening facing the cooling fan 22 to increase the air intake volume. Connecting the condenser 11 and radiator 21 via the fixing component 30 and integrating them into the air intake shroud 23 forms a modular structure, reducing the overall system volume and not occupying the original internal space of the engine 20. The rigid connection between the condenser 11 and radiator 21, combined with the supporting effect of the air intake shroud 23, increases the stability of the condenser 11 while reducing the impact of vibration.

[0049] The condenser 11 and the radiator 21 can be welded or detachably connected. In this embodiment, the fixing component 30 is detachably connected. For details, see [link to documentation]. Figures 6-7 As shown, the fixing assembly 30 includes a first bracket 31, a second bracket 32, and a fixing member 33. The first bracket 31 is symmetrically arranged on both sides of the condenser 11, and the second bracket 32 ​​is arranged at the corresponding position of the radiator 21. The first bracket 31 and the second bracket 32 ​​are connected by the fixing member 33.

[0050] See Figure 7 As shown, the fixing member 33 further includes bolts, and the side of the second bracket 32 ​​facing the first bracket 31 has a bent portion 320, which is away from the radiator 21. The bolts pass through the first bracket 31, the bent portion 320, and the radiator 21 in sequence to fix the condenser 11 and the radiator 21. In the embodiment provided in this application, the first bracket 31 and the second bracket 32 ​​are connected to the condenser 11 and the radiator 21 by welding, and then fixed by detachable bolts. In order to ensure sufficient distance between the condenser 11 and the radiator 21 and avoid affecting their heat dissipation effect, the bent portion 320 separates the condenser 11 and the radiator 21 by a certain distance to ensure airflow. It should be noted that, in order to increase the heat dissipation effect, the area of ​​the cooling fan 22 can be increased or the thermal conductivity of the heat-conducting material of the radiator 21 can be improved, thereby increasing the heat dissipation airflow and heat dissipation surface area.

[0051] See Figure 7 As shown, a rubber pad 34 is provided between the bent portion 320 and the first bracket 31, and a shim 35 is provided on the opposite side of the bent portion 320 and the first bracket 31. The rubber pad 34 is used for elastic buffering to eliminate gaps, and the shim 35 is used for anti-loosening and positioning assistance.

[0052] In this embodiment, see Figure 9As shown, the condenser 11 is provided with a first input connector 110 and a first output connector 111, both of which penetrate the air collector hood 23 and extend to the outside of the air collector hood 23. In this application, the first input connector 110 and the first output connector 111 are located on the same side of the air collector hood 23 and close to the dryer filter 12, reducing the pipeline length and avoiding energy loss.

[0053] See Figure 4 and Figure 9 As shown, the compressor 10 is located on one side of the engine 20, and the dryer filter 12 is mounted on the compressor 10 via a third bracket 122. The dryer filter 12 is equipped with a second input connector 120 and a second output connector 121. The compressor 10 and the dryer filter 12 are positioned as close as possible to the condenser 11 to reduce energy loss during pipeline transportation.

[0054] In this embodiment, see Figure 10 As shown, the main unit 13 contains an expansion valve 14, an evaporator 15, and a blower 16. The expansion valve 14 is connected to the evaporator 15, and an expansion valve pipe 140 is provided at the end of the expansion valve 14 away from the evaporator 15. The expansion valve pipe 140 is connected to the dryer filter 12. The blower 16 is located on the side of the main unit 13 facing the cockpit 40. The condenser fan 51 is eliminated, and the condenser 11 and other structures are located in the engine compartment of the engine 20. The internal structure of the main unit is optimized, the cantilever length is shortened, the space between the expansion valve 14 and the evaporator 15 is expanded, and a wider range of models can be selected, which is beneficial to improving air conditioning performance. The end of the expansion valve pipe 140 that connects to the dryer filter 12 extends to the outside of the main unit and is connected to the dryer 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.

[0055] See Figure 10 As shown, a compressor input pipe 100 is also provided 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. The end of the compressor output pipe connected to the compressor 10 extends to the outside of the main unit and is on the same side as the expansion valve pipe 140.

[0056] In the embodiments provided in this application, the compressor 10 compresses the refrigerant. The compressed refrigerant is input into the first input connector 110 through a pipeline and enters the condenser 11 for heat dissipation. The cooling fan 22 of the engine 20 blows air to remove the heat from the condenser 11. The cooled refrigerant is then transported through the first output connector 111 and through a pipeline to the second input connector 120, where it enters the dryer filter 12 for drying and filtration. It is then transported through the second output connector 121 and through a pipeline to the expansion valve pipe 140, where it enters the expansion valve 14. The refrigerant rapidly evaporates into gas and enters the evaporator 15 for evaporation and heat absorption. The blower 16 exchanges the air inside the cockpit 40 with the air on the surface of the evaporator 15, thereby regulating the air temperature inside the cockpit 40. After passing through the evaporator 15, the temperature of the refrigerant gradually increases. Once it approaches the internal temperature of the cockpit 40, it returns to the compressor 10 through the compressor input pipe 100 to begin the next cycle.

[0057] See Figure 3 As shown, this utility model also provides an internal combustion forklift that includes the aforementioned split-type air conditioner. This split-type air conditioner can be used on any internal combustion forklift with suitable air conditioning installation conditions. The split component is located in the engine compartment 20 of the internal combustion forklift, utilizing the forklift's built-in cooling system to dissipate heat from the condenser 11. This significantly reduces the weight of the main unit 13 and the cantilever length, avoiding the risk of the main unit 13 falling due to vibration and other factors, thus improving safety. The main unit 13 is located at the rear upper part of the cab 40, and a ventilation system is installed inside the cab 40.

[0058] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A split-type air conditioner, applied to an internal combustion forklift, characterized in that, The forklift includes a split assembly and a main unit. The split assembly is located in the engine compartment of the internal combustion forklift, and the main unit is located at the rear of the driver's cab of the internal combustion forklift. The separate assembly includes a compressor, a condenser, and a dryer filter, with the condenser located between the engine's radiator and cooling fan.

2. The split-type air conditioner according to claim 1, characterized in that, The radiator has an air collecting shroud on the side facing the cooling fan. The air collecting shroud has a receiving space, and the condenser is located in the receiving space. The condenser and the radiator are connected by a fixing component.

3. The split-type air conditioner according to claim 2, characterized in that, The fixing assembly includes a first bracket, a second bracket, and a fixing member. The first bracket is symmetrically arranged on both sides of the condenser, and the second bracket is arranged at the corresponding position of the radiator. The first bracket and the second bracket are connected by the fixing member.

4. The split-type air conditioner according to claim 3, characterized in that, The fastener includes a bolt, and the side of the second bracket facing the first bracket has a bent portion away from the radiator. The bolt passes through the first bracket, the bent portion, and the radiator in sequence to fix the condenser to the radiator.

5. The split-type air conditioner according to claim 4, characterized in that, A rubber pad is provided between the bent portion and the first bracket, and gaskets are respectively provided on the opposite sides of the bent portion and the first bracket.

6. The split-type air conditioner according to claim 2, characterized in that, The condenser is provided with a first input connector and a first output connector, both of which pass through the air collecting shroud and extend to the outside of the air collecting shroud.

7. The split-type air conditioner according to claim 1, characterized in that, The compressor is located on one side of the engine, and the dryer filter is mounted on the compressor via a third bracket. The dryer filter is provided with a second input connector and a second output connector.

8. The split-type air conditioner according to claim 1, characterized in that, The main unit is equipped with an expansion valve, an evaporator, and a blower. The expansion valve is connected to the evaporator, and an expansion valve pipe is provided at the end of the expansion valve away from the evaporator. The expansion valve pipe is connected to the dryer filter, and the blower is located on the side of the main unit facing the cockpit.

9. The split-type air conditioner according to claim 8, characterized in that, A compressor input pipe is also provided 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, The split-type air conditioner includes any one of claims 1-9.

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