Warm air device and fork truck having the same

Abstract

The utility model relates to the technical field of heating, in particular to warm air device and forklift with the warm air device. The warm air device includes fan, air outlet pipe and the radiator that sets up between fan and air outlet pipe, and the radiator is used for connecting in hydraulic system and supplies hydraulic oil to pass through and radiates heat, and the air outlet side of fan is towards radiator, thereby fan is used for transmitting the heat of radiator to air outlet pipe through airflow, and blows out through the air outlet of air outlet pipe end, to be used for heating. The utility model connects the radiator to the hydraulic system, utilizes the radiator to the cooling of hydraulic oil, and fan blows out the heat carried by the radiator and provides warm air outward, and the utility model utilizes the heat of hydraulic system to provide warm air, improves energy utilization efficiency, reduces energy consumption and cost, and can be applied to forklift to improve the work comfort of driver.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, specifically to a heating device and a forklift equipped with the heating device. Background Technology

[0002] With technological advancements, many forklifts require the addition of heating systems. A common approach is to use electronic heating devices that convert electrical energy into heat, with a fan blowing the heat from the electronic heater into the cab through the vents. While this system is highly integrated, it consumes additional electrical energy, increasing energy consumption and cost. Summary of the Invention

[0003] The purpose of this utility model is to provide a heating device and a forklift equipped with the heating device, which uses the heat dissipated by the hydraulic system to provide heating, thereby improving energy efficiency and reducing energy consumption and costs.

[0004] To achieve the above objectives, the technical solution of this utility model includes:

[0005] A heating device for providing heating includes a fan, an air outlet duct, and a radiator disposed between the fan and the air outlet duct. The radiator is connected to a hydraulic system and allows hydraulic oil to pass through it for heat dissipation. The air outlet side of the fan faces the radiator, so that the fan can transfer the heat from the radiator to the air outlet duct via airflow and blow it out through the air outlet at the end of the air outlet duct for heating.

[0006] In one embodiment, the housing includes a heat sink disposed inside the housing. The heat sink is a plate-shaped structure. The housing is divided into a first part and a second part along the thickness direction of the plate-shaped structure, with the heat sink as the boundary. The fan is disposed in the first part of the housing and located inside the housing. The air outlet pipe is disposed in the second part of the housing and connected to the wall of the housing.

[0007] In one embodiment, the housing is a rectangular structure, and the air outlet includes a first air outlet and a second air outlet. The first air outlet is disposed opposite to the fan on both sides of the radiator. The wall of the housing with the first air outlet is defined as the top wall, the wall opposite to it is defined as the bottom wall, and the wall sandwiched between the top wall and the bottom wall is defined as the side wall. The second air outlet is disposed on the side wall of the housing.

[0008] In one embodiment, the radiator is installed in the return oil pipe of the hydraulic system. The radiator has an oil inlet, an oil outlet, and multiple cooling pipes connected to the oil inlet and the oil outlet. The hydraulic oil in the return oil pipe flows back to the oil tank of the hydraulic system through the oil inlet, the cooling pipes, and the oil outlet of the radiator in sequence.

[0009] In one embodiment, the radiator is a rectangular plate structure, the heat dissipation pipe is a thin sheet, the heat dissipation pipe extends along the length direction of the radiator and is arranged side by side along the width direction of the radiator, and the thickness direction of the thin sheet is consistent with the width direction of the radiator, and the fan is arranged on one side of the radiator along the thickness direction of the radiator.

[0010] In one embodiment, the radiator is disposed in the middle of the return oil pipe, dividing the return oil pipe into two sections, namely a first return oil pipe and a second return oil pipe. The oil inlet is connected to the first return oil pipe, the oil outlet is connected to the second return oil pipe, and the second return oil pipe is connected to the oil tank of the hydraulic system.

[0011] In one embodiment, the fan is fixedly connected to the mounting bracket.

[0012] The technical solution of this utility model also includes:

[0013] A forklift includes the aforementioned heating device, the air outlet of which is located in the cab of the forklift.

[0014] In one embodiment, the air outlet is provided in at least two sets, wherein the two sets of air outlets are a first air outlet and a second air outlet, the first air outlet is located at the windshield and is used to blow air toward the windshield, and the second air outlet is located at the front of the cab and is used to blow air toward the driver.

[0015] In one embodiment, the heating device includes a housing, with a fan and a radiator respectively disposed inside the housing, a second air outlet disposed on the side wall of the housing, and the housing being fixed to the cab floor by two mounting brackets. The housing is located at the front of the cab and above the oil tank of the hydraulic system by means of the mounting brackets.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model connects a radiator to a hydraulic system, uses the radiator to cool the hydraulic oil, and a fan blows out the heat carried by the radiator to provide warm air. This heating device uses the heat of the hydraulic system to provide warm air, improves energy efficiency, reduces energy consumption and costs, and can be applied to forklifts to improve the driver's working comfort.

[0018] 2. The radiator is connected to the return oil pipe. The hydraulic oil in the return oil pipe is heated after passing through the power components, actuators and other components. The high temperature hydraulic oil is used to make the hot air at the air outlet even hotter, thus improving the heat utilization rate.

[0019] 3. Multiple heat dissipation pipes arranged in parallel form a plate-like structure for the radiator, increasing the heat dissipation area. The fan's exhaust side faces the plate-like structure, further improving heat utilization. Attached Figure Description

[0020] Figure 1 This is a perspective view of one embodiment of the present invention.

[0021] Figure 2 This is a perspective view of another embodiment of the present invention.

[0022] Figure 3 This is a three-dimensional representation of a portion of the structure of an embodiment of this utility model. Figure 1 .

[0023] Figure 4 This is a three-dimensional representation of a portion of the structure of an embodiment of this utility model. Figure 2 .

[0024] Figure 5 This is a three-dimensional representation of a portion of the structure of an embodiment of this utility model. Figure 3 . Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] See Figures 1 to 5 As shown, this utility model discloses a heating device for providing warmth. In this embodiment, the heating device is used in forklifts, particularly forklifts with hydraulic systems. The heating device in this embodiment provides warm air to the driver or the windshield, and its warm air outlet is located in the forklift's cab. In other embodiments, the heating device can be located in other positions to provide warm air to other devices that require warmth, such as the rear windshield or rearview mirror.

[0027] The heating device includes a fan 10, an air outlet duct 20, and a radiator 30 disposed between the fan 10 and the air outlet duct 20. The radiator 30 is used to connect to the hydraulic system and to allow hydraulic oil to pass through it for heat dissipation. The air outlet side of the fan 10 faces the radiator 30, so that the fan 10 is used to transfer the heat of the radiator 30 to the air outlet duct 20 through airflow, and blow it out through the air outlet 201 at the end of the air outlet duct 20 for heating.

[0028] This invention connects the radiator 30 to the hydraulic system, uses the radiator 30 to cool the hydraulic oil, and the fan 10 blows out the heat carried by the radiator 30 to provide warm air. This heating device uses the heat of the hydraulic system to provide warm air, improves energy efficiency, reduces energy consumption and cost, and can be applied to forklifts to improve the driver's working comfort. It can also be used to defog the rear windshield or rearview mirror.

[0029] The fan 10 and the radiator 30 are housed within a housing 40. The radiator 30 is a rectangular plate-like structure. The housing 40 is divided into a first part 410 and a second part 420 along the thickness direction of the plate-like structure, with the radiator 30 as the boundary. The fan 10 is located in the first part 410 of the housing 40, and the exhaust duct 20 is located in the second part 420 of the housing 40 and connected to the wall of the housing 40. The first part 410 and the second part 420 are located on opposite sides of the plate-like extension surface of the radiator 30, that is, on opposite sides of the thickness direction of the radiator 30. Thus, when the fan 10 rotates, an airflow can be formed from the first part 410 to the radiator 30 to the second part 420. The airflow passes through the radiator 30 and undergoes sufficient heat exchange, thereby heating the airflow before it flows to the exhaust duct 20. To facilitate the formation of airflow, the housing 40 is provided with an air inlet 401, which is opened in the wall of the first part 410, that is, the bottom wall described below, and is positioned opposite to the air inlet side of the fan 10.

[0030] In this embodiment, the housing 40 has a rectangular structure. The air outlet duct 20 includes a first air outlet duct 21 and a second air outlet duct 22. The first air outlet duct 21 is disposed opposite to the fan 10 on both sides of the radiator 30. The wall of the housing 40 with the first air outlet duct 21 is defined as the top wall, the wall opposite it is defined as the bottom wall, and the wall sandwiched between the top wall and the bottom wall is defined as the side wall. The second air outlet duct 22 is disposed on the side wall of the housing 40. Two sets of air outlet ducts 20 are provided, thereby forming at least two sets of air outlets 201—namely, the first air outlet 211 and the second air outlet 221—which can expand the area of ​​warm air. In other embodiments, it is also feasible to provide only one set of air outlet ducts.

[0031] In this embodiment, the first air outlet duct 21 is longer than the second air outlet duct 22. The end of the first air outlet duct 21 is provided with a first air outlet 211 located at the windshield for blowing warm air onto the windshield for operations such as defogging and defrosting. The second air outlet 221 at the end of the second air outlet duct 22 is located below the windshield, roughly in the area in front of the driver's legs, for blowing warm air onto the driver's leg area. The first air outlet duct 21 is inserted into the mounting connector 50 locked to the top wall of the housing 40, and is indirectly connected to the top wall of the housing 40 by means of the mounting connector 50. The first air outlet duct 21 extends upward to the windshield. To adapt to the windshield, a flat air nozzle is installed at the end of the first air outlet duct 21, making the air outlet at the end of the first air outlet duct 21 elongated. The second air outlet 22 is inserted into the side wall of the housing 40, and the second air outlet 221 is located approximately on the side wall of the housing 40. In order to control the air volume of the second air outlet 221, a flip-up baffle is also provided on the second air outlet 221.

[0032] In this embodiment, the fan 10 is fixedly connected to the heat sink 30 via a connecting bracket 60. This fixed connection facilitates control of the relative position between the fan 10 and the heat sink 30, ensuring that the airflow generated by the fan 10's rotation can fully pass through the heat dissipation pipes 301 of the heat sink 30. Specifically, the fan 10 is bolted to the connecting bracket 60, which has a through hole. The air outlet side of the fan 10 faces this through hole, allowing airflow to pass through it to the heat sink 30, resulting in smoother airflow and less energy loss.

[0033] The radiator 30 is installed on the return oil pipe 70 of the hydraulic system. The radiator 30 has an oil inlet 302, an oil outlet 303, and multiple heat dissipation pipes 301 connected to the oil inlet 302 and the oil outlet 303. The hydraulic oil in the return oil pipe 70 flows back to the oil tank 80 of the hydraulic system through the oil inlet 302, the heat dissipation pipes 301 and the oil outlet 303 of the radiator 30 in sequence. In this embodiment, the radiator 30 is located in the middle of the return oil pipe 70. The radiator 30 divides the return oil pipe 70 into two sections: a first return oil pipe 701 connected to the working components of the hydraulic system and a second return oil pipe 702 connected to the oil tank 80 of the hydraulic system. The oil inlet 302 is connected to the first return oil pipe 701, and the oil outlet 303 is connected to the second return oil pipe 702. The connection between the oil outlet 303 and the second return oil pipe 702 allows the distance between the radiator 30 and the oil tank 80 to be increased, making the arrangement of the radiator 30 more flexible. This allows the radiator 30 and the housing 40 to be arranged in front of the cab. In this embodiment, the housing 40 is fixed to the cab floor 90 by two mounting brackets (a first mounting bracket 901 and a second mounting bracket 902). The housing 40 is located in front of the driver and above the oil tank 80 of the hydraulic system by means of the first mounting bracket 901 and the second mounting bracket 902. Since the hydraulic system's oil tank 80 is usually installed below the cab, in this embodiment, the housing 40 is installed at a position relatively higher than the cab floor 90 by means of the first mounting bracket 901 and the second mounting bracket 902. More specifically, it is installed in the area at the front of the cab and close to the driver's legs. In addition to shortening the length of the second air duct 22 and reducing heat loss, it can also use the heat radiation from the radiator 30 to heat the cab, further improving the heat utilization rate.

[0034] Furthermore, the multiple heat dissipation pipes 301 can divert hydraulic oil, thereby increasing the heat dissipation area and improving heat dissipation efficiency. Specifically, the heat dissipation pipes 301 are multiple through holes, which form closed channels at both ends through sealing connections with the side walls of the housing 40.

[0035] The heat dissipation pipe 301 is in the form of a thin sheet. The heat dissipation pipe 301 extends along the length of the heat sink 30 and is arranged side by side along the width of the heat sink 30. The thickness direction of the thin sheet is consistent with the width direction of the heat sink 30. The fan 10 is arranged on one side of the heat sink 30 along the thickness direction of the heat sink 30. This arrangement makes the airflow less disturbed and can prolong the contact time between the airflow and the heat dissipation pipe 301, thereby further improving the heat dissipation efficiency and heat utilization rate.

[0036] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that the remaining undescribed parts are prior art, and that all changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A heating device for providing heating, characterized in that: The device includes a fan, an air outlet duct, and a radiator disposed between the fan and the air outlet duct. The radiator is connected to a hydraulic system and allows hydraulic oil to pass through it for heat dissipation. The air outlet side of the fan faces the radiator, so that the fan can transfer the heat from the radiator to the air outlet duct via airflow and blow it out through the air outlet at the end of the air outlet duct for heating.

2. The heating device according to claim 1, characterized in that: The device includes a housing, a heat sink disposed inside the housing, the heat sink having a plate-like structure, the housing being divided into a first part and a second part along the thickness direction of the plate-like structure with the heat sink as the boundary, a fan disposed in the first part of the housing and located inside the housing, and an air outlet duct disposed in the second part of the housing and connected to the wall of the housing.

3. A heating device according to claim 2, characterized in that: The housing is a rectangular structure. The air outlet includes a first air outlet and a second air outlet. The first air outlet is disposed opposite to the fan on both sides of the radiator. The wall of the housing with the first air outlet is defined as the top wall, the wall opposite to it is defined as the bottom wall, and the wall sandwiched between the top wall and the bottom wall is defined as the side wall. The second air outlet is disposed on the side wall of the housing.

4. A heating device according to claim 1, characterized in that: The radiator is installed in the return oil pipe of the hydraulic system. The radiator has an oil inlet, an oil outlet, and multiple heat dissipation pipes connected to the oil inlet and the oil outlet. The hydraulic oil in the return oil pipe flows back to the oil tank of the hydraulic system through the oil inlet, the heat dissipation pipes, and the oil outlet of the radiator in sequence.

5. A heating device according to claim 4, characterized in that: The radiator is a rectangular plate structure, and the heat dissipation pipes are thin sheets. The heat dissipation pipes extend along the length of the radiator and are arranged side by side along the width of the radiator. The thickness direction of the thin sheets is consistent with the width direction of the radiator. The fan is located on one side of the radiator along the thickness direction of the radiator.

6. A heating device according to claim 4, characterized in that: The radiator is located in the middle of the return oil pipe, dividing the return oil pipe into two sections, namely the first return oil pipe and the second return oil pipe. The oil inlet is connected to the first return oil pipe, the oil outlet is connected to the second return oil pipe, and the second return oil pipe is connected to the oil tank of the hydraulic system.

7. A heating device according to claim 1, characterized in that: The fan is fixedly connected to the heat sink via a connecting bracket.

8. A forklift, characterized in that: The invention includes the heating device according to any one of claims 1-7, wherein the air outlet of the heating device is located in the cab of the forklift.

9. A forklift according to claim 8, characterized in that: The air outlet is provided in at least two sets, namely a first air outlet and a second air outlet. The first air outlet is located at the windshield and is used to blow air onto the windshield. The second air outlet is located at the front of the cab and is used to blow air onto the driver.

10. A forklift according to claim 9, characterized in that: The heating device includes a housing, with a fan and a radiator respectively disposed inside the housing. A second air outlet is disposed on the side wall of the housing. The housing is fixed to the cab floor by two mounting brackets. The housing is located at the front of the cab and above the oil tank of the hydraulic system by means of the mounting brackets.

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