Temperature regulating mechanism for an engineering vehicle cab

Abstract

The application relates to the technical field of vehicle air conditioning, in particular to a temperature adjusting mechanism for an engineering vehicle cab, which comprises a main box body, a blower, a heating assembly, a controller and a filter element. The main box body is provided with an air inlet and an air outlet, and is internally provided with an accommodating chamber. The main box body is provided with a rectangular interlayer, the filter element is plug-in arranged in the interlayer, and the filter element is used for covering the air inlet. The main body of the heating assembly is arranged in the accommodating chamber, and the heating assembly is used for heating air in the accommodating chamber. The blower drives the gas to flow through the air inlet, the heating assembly and the air outlet in sequence, and the heated air flows to the cab through the air outlet. The controller is used for controlling the operation of the heating assembly and the blower. In the application, the filter element is arranged on the main box body in a plug-in mode, so that the filter element can be replaced by the staff, the engineering vehicle can cope with severe dust working conditions, and the cleanliness of the air delivered into the cab is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle air conditioning technology, and in particular to a temperature control mechanism for the driver's cab of an engineering vehicle. Background Technology

[0002] Engineering vehicles are special vehicles designed for engineering construction, industrial operations, municipal maintenance, mining, and other similar scenarios, possessing specific functions to complete professional tasks. The temperature control mechanism in the cab of an engineering vehicle heats or cools the outside air and then delivers the heated or cooled air into the cab to regulate the temperature and cleanliness of the air inside.

[0003] In existing technology, air conditioning systems have filters installed at the air inlet to filter dust from the air. Compared to ordinary vehicles, engineering vehicles need to cope with harsher dust conditions; this makes it easier for external dust to clog the air conditioning system's air inlet filter, thus affecting the heating or cooling performance of the air conditioning system. Utility Model Content

[0004] In order to improve the heating or cooling effect of the air conditioning system for engineering vehicles, this application provides a temperature control system for the driver's cab of an engineering vehicle.

[0005] This application provides a temperature regulation mechanism for the cab of an engineering vehicle, which adopts the following technical solution: A temperature control mechanism for the cab of an engineering vehicle includes a main housing, a blower, a heating element, a controller, and a filter element. The main housing has an air inlet and an air outlet, and a receiving chamber is provided inside the main housing. The main housing has a rectangular interlayer, and the filter element is inserted into the interlayer to cover the air inlet. The main body of the heating element is disposed in the receiving chamber, and the heating element is used to heat the air in the receiving chamber. The blower drives gas to flow sequentially through the air inlet, the heating element, and the air outlet, and the heated air flows to the cab through the air outlet. The controller is used to control the operation of the heating element and the blower.

[0006] By adopting the above technical solution, the filter element is installed on the main housing through a plug-in method, making it convenient for personnel to replace the filter element; this enables the engineering vehicle to cope with harsh dust conditions and improves the cleanliness of the air delivered to the cab. Furthermore, through the coordinated operation of the controller, blower, and heating components, the air entering the cab is heated to achieve the purpose of raising the cab temperature.

[0007] Optionally, the heating component includes a water valve, a water supply pipe, and a heater core. The water valve is located on the outside of the main housing, and the heater core is located in the receiving chamber. The main housing has an installation hole for the water supply pipe to pass through. The water valve is connected to the heater core through the water supply pipe. The water valve is externally connected to the engine water cooling system, and the coolant from the engine water cooling system flows into the heater core to heat the air flowing through the heater core.

[0008] By adopting the above technical solution, the waste heat generated by the engine of the engineering vehicle is used to heat the air in the containment chamber, thereby increasing the temperature of the air flowing into the driver's cab.

[0009] The engine generates a large amount of heat during operation. Coolant flows through the engine water passages to absorb this heat, and some coolant passes through the heater core. Air comes into contact with the surface of the heater core, absorbs heat from the coolant, and then heats up. The heated air is then delivered to the passenger compartment by a blower. In existing vehicle air conditioning systems, heater cores (small radiators) are widely used, and this application will not elaborate on the specific structure of the heater core.

[0010] Optionally, the inner peripheral wall of the main housing is provided with a support plate, which is used to support the heating core.

[0011] By adopting the above technical solution, a support plate is used to support the heating core, which makes it easier for staff to install the heating core.

[0012] Optionally, the heating component is a PTC heater, the main body of which is disposed in the receiving chamber, and the PTC heater is used to heat air.

[0013] By adopting the above technical solution, a PTC heater is used to heat the air, which is suitable for the operating conditions of new energy engineering vehicles.

[0014] Optionally, it also includes a refrigeration component, the main body of which is disposed in the receiving chamber. The refrigeration component is used to cool the air in the receiving chamber, and the controller is used to control the operation of the refrigeration component.

[0015] By adopting the above technical solution and integrating refrigeration and heating components into the main housing, this device can heat or cool the air according to actual working conditions, thereby improving the applicability of this device.

[0016] Optionally, the refrigeration assembly includes an expansion valve, a refrigerant delivery pipe, and an evaporator core. The expansion valve is connected to the evaporator core through the refrigerant delivery pipe. The expansion valve is located on the outside of the main housing. The evaporator core is inclinedly arranged in the receiving chamber. The expansion valve is connected to an external refrigeration device.

[0017] By adopting the above technical solution, the evaporator core is tilted in the receiving chamber, which can reduce the width of the main box and the volume occupied by the single cooling mechanism to cope with the small installation space of the engineering vehicle; at the same time, tilting the evaporator core can increase the contact area between the evaporator core and the air, thereby improving the cooling effect of the evaporator core on the air.

[0018] Optionally, the elevation of the evaporator core decreases along the direction away from the air inlet.

[0019] By adopting the above technical solution and limiting the tilt angle of the evaporator core, the contact time between the air and the evaporator core can be increased after the air flows into the receiving chamber through the air inlet, thereby improving the cooling effect of the evaporator core on the air.

[0020] Optionally, the cooling component is disposed at the bottom of the heating component.

[0021] By adopting the above technical solution, when air comes into contact with the evaporator core, the water vapor in the air will condense into water on the surface of the evaporator core, and the water on the surface of the evaporator core will gather into water droplets and drip down. By placing the cooling component at the bottom of the heating component, the impact of water droplets generated by the cooling component during operation on the heating component can be reduced, thereby improving the service life of the heating component.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The filter element is installed on the main housing by plugging and unplugging, which makes it easy for staff to replace the filter element; this enables the engineering vehicle to cope with harsh dust conditions and improves the cleanliness of the air delivered to the driver's cab. 2. By integrating refrigeration and heating components into the main housing, this mechanism can heat or cool the air according to actual working conditions, thereby improving the applicability of this mechanism. 3. The evaporator core is tilted in the receiving chamber, which can reduce the width of the main box and the volume occupied by the single cooling mechanism to cope with the small installation space of the engineering vehicle; at the same time, tilting the evaporator core can increase the contact area between the evaporator core and the air, thereby improving the cooling effect of the evaporator core on the air. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of the temperature regulation mechanism in Example 1.

[0024] Figure 2 This is a schematic diagram of the external structure of the temperature regulation mechanism in Example 1.

[0025] Figure 3 This is a schematic diagram of the internal structure of the temperature regulation mechanism in Example 1.

[0026] Figure 4 This is a schematic diagram of the internal structure of the temperature regulation mechanism in Example 2.

[0027] Figure 5 This is a schematic diagram of the internal structure of the temperature regulation mechanism in Example 2.

[0028] Figure 6 This is a schematic diagram of the cooling component in Example 2.

[0029] Figure 7 This is a schematic diagram of the external structure of the temperature regulation mechanism in Example 3.

[0030] Figure 8 This is a schematic diagram of the internal structure of the temperature regulation mechanism in Example 3.

[0031] Explanation of reference numerals in the attached drawings: 1. Main housing; 11. Air inlet; 12. Air outlet; 13. Receiving chamber; 14. Mezzanine; 15. Base plate; 151. Drain plate; 152. Combination plate; 153. Water outlet pipe; 2. Blower; 3. Heating component; 31. Water valve; 32. Water supply pipe; 33. Warm air core; 34. Support plate; 35. PTC heater; 4. Controller; 5. Refrigeration component; 51. Expansion valve; 52. Refrigerant supply pipe; 53. Evaporator core; 6. Filter element; 7. Temperature sensor; 8. Connecting sheet metal parts. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -8 provides further details regarding this application.

[0033] Example 1 This application discloses a temperature control mechanism for the cab of an engineering vehicle. The temperature control mechanism is located in the lower compartment of the cab and is used to supply fresh air (cold / hot air) into the cab. (See also...) Figures 1 to 3 The temperature regulation mechanism for the cab of the engineering vehicle includes a main body 1, a blower 2, a heating component 3, a controller 4, a filter element 6, and connecting sheet metal parts 8.

[0034] Reference Figure 2 and Figure 3 The main housing 1 has an air inlet 11 and an air outlet 12, and a receiving chamber 13 is provided inside the main housing 1. The main housing 1 has a rectangular interlayer 14, in which a filter element 6 is inserted and removed, and the filter element 6 is used to cover the air inlet 11. In this embodiment, the bottom of the main housing 1 has two air inlets 11, which are located on two adjacent side walls of the main housing 1; correspondingly, the main housing 1 has two interlayers 14 for receiving the filter element 6. There is one air outlet 12, which is located at the top of the main housing 1.

[0035] A connecting sheet metal part 8 is fixed to the main body 1. The thickness of the connecting sheet metal part 8 is greater than the thickness of the main body 1. The connecting sheet metal part 8 is used to fix the main body 1 to the engineering vehicle. In this embodiment, there are two connecting sheet metal parts 8, which are arranged opposite to each other on both sides of the main body 1. The use of the thicker connecting sheet metal part 8 to fix the main body 1 to the engineering vehicle ensures the connection strength between the main body 1 and the engineering vehicle. The opposite arrangement of the two connecting sheet metal parts 8 improves the balance of force on the main body 1, thereby reducing the risk of deformation of the main body 1 due to excessive load.

[0036] Reference Figure 1 and Figure 3 The main body of the heating component 3 is located in the receiving chamber 13, and the heating component 3 is used to heat the air in the receiving chamber 13. The blower 2 drives the gas to flow sequentially through the air inlet 11, the heating component 3 and the air outlet 12, and the heated air flows to the driver's cab through the air outlet 12; the controller 4 is used to control the operation of the heating component 3 and the blower 2.

[0037] Reference Figure 1 and Figure 3 In this embodiment, the heating component 3 includes a water valve 31, a water supply pipe 32, a heater core 33, and a support plate 34. The water valve 31 is located on the outside of the main housing 1, and the heater core 33 is located in the receiving chamber 13. The main housing 1 has an installation hole for the water supply pipe 32 to pass through. In this embodiment, there are two water supply pipes 32: one supply pipe for coolant to flow to the heater core 33, and the other supply pipe for coolant to flow out of the heater core 33. The water valve 31 is connected to the heater core 33 through one of the water supply pipes 32; the water valve 31 is externally connected to the engine water cooling system, and the coolant from the engine water cooling system flows into the heater core 33 to heat the air flowing through the heater core 33. The support plate 34 is located on the inner peripheral wall of the main housing 1 and is used to support the heater core 33, thereby allowing the heater core 33 to be horizontally positioned in the receiving chamber 13. In this embodiment, a support plate 34 is used to support the heating core 33, thereby facilitating the installation of the heating core 33 by the staff.

[0038] Reference Figure 3 In this embodiment, the working principle of the heating component 3 is as follows: the engine generates a large amount of heat during operation, and the coolant flows through the engine water passage to absorb the heat. Part of the coolant passes through the heater core 33. Air comes into contact with the surface of the heater core 33, absorbs the heat from the coolant, and is heated. The heated air is then delivered to the passenger compartment by the blower 2. In existing vehicle air conditioning mechanisms, the heater core 33 (small radiator) is widely used, and the specific structure of the heater core 33 will not be described in detail in this application.

[0039] Reference Figure 1 and Figure 2In addition, the temperature regulation mechanism of this application also includes a temperature sensor 7, which is disposed on the main housing 1. The temperature sensor 7 is used to monitor the air temperature flowing through the air inlet 11; thereby, the temperature sensor 7 is used to monitor the air temperature of the air inlet 11 so that the controller 4 can control the operation of other structures.

[0040] The implementation principle of a temperature regulation mechanism for the driver's cab of an engineering vehicle according to an embodiment of this application is as follows: Reference Figure 2 and Figure 3 The filter element 6 is installed on the main housing 1 via a plug-in method, making it easy for staff to replace. This allows the engineering vehicle to cope with harsh dust conditions and improves the cleanliness of the air delivered to the cab. The controller 4, blower 2, and heating component 3 work together to heat the air entering the cab, thus raising the cab's temperature.

[0041] Example 2 The difference between Example 2 and Example 1 is as follows: Reference Figure 4 and Figure 5 The temperature control mechanism for the driver's cab of the engineering vehicle also includes a cooling component 5. The main body of the cooling component 5 is disposed in the receiving chamber 13, and the cooling component 5 is located at the bottom of the heating component 3. The cooling component 5 is used to cool the air in the receiving chamber 13, and the controller 4 is used to control the operation of the cooling component 5.

[0042] By integrating a cooling component 5 and a heating component 3 within the main housing 1, this mechanism can heat or cool the air according to actual operating conditions, thus expanding its applicability. In this embodiment, Figure 4 Blower 2 was hidden. Figure 5 Blower 2 was displayed.

[0043] Reference Figure 5 and Figure 6 In this embodiment, the refrigeration assembly 5 includes an expansion valve 51, a refrigerant delivery pipe 52, and an evaporator core 53. The expansion valve 51 is connected to the evaporator core 53 via the refrigerant delivery pipe 52. The expansion valve 51 is located on the outside of the main housing 1. The evaporator core 53 is inclinedly disposed in the receiving chamber 13. The main housing 1 has an installation hole for the refrigerant delivery pipe 52 to pass through. The expansion valve 51 is connected to external refrigeration equipment, including a compressor and a condenser. In this embodiment, the elevation of the evaporator core 53 decreases along the direction away from the air inlet 11.

[0044] Reference Figure 5 and Figure 6Furthermore, in this embodiment, two expansion valves 51 and two refrigerant delivery pipes 52 are provided to allow the refrigerant to circulate within the evaporator core 53. Evaporator cores 53 (evaporators) are widely used in the prior art, and this application will not elaborate on the specific structure of the evaporator core 53.

[0045] Reference Figure 5 and Figure 6 The working principle of the refrigeration component 5 is as follows: The compressor draws in the low-pressure gaseous refrigerant flowing from the evaporator, compresses it into a high-pressure, high-temperature gaseous refrigerant, and discharges it into the condenser. The high-pressure, high-temperature gaseous refrigerant enters the condenser, where the oncoming wind or the condenser fan blows across the condenser fins, carrying away the heat from the refrigerant; the refrigerant gradually cools, becoming a high-pressure, room-temperature liquid refrigerant. The high-pressure liquid refrigerant flows through the expansion valve 51, causing a rapid temperature drop, becoming a low-pressure, low-temperature gas-liquid mixture, which enters the evaporator core 53. The low-pressure gas-liquid mixture flows within the evaporator core 53, where air comes into contact with the surface of the evaporator core 53. The refrigerant within the evaporator core 53 absorbs heat from the air to lower its temperature; the refrigerant, having absorbed the heat, then flows back to the compressor.

[0046] Reference Figure 4 and Figure 5 In this embodiment, the bottom plate 15 of the main housing 1 includes a diversion plate 151 and a confluence plate 152, which are integrally formed. The diversion plate 151 is inclined, and the confluence plate 152 is horizontal. The diversion plate 151 is used to divert water to the confluence plate 152, and the bottom of the confluence plate 152 is provided with a water outlet pipe 153. Through the coordinated operation of the diversion plate 151 and the confluence plate 152, it is beneficial to drain the condensate at the bottom of the receiving chamber 13 to reduce the odor of cold air.

[0047] The implementation principle of a temperature regulation mechanism for the driver's cab of an engineering vehicle according to an embodiment of this application is as follows: Reference Figure 4 and Figure 5 The evaporator core 53 is inclined in the receiving chamber 13, which can reduce the width of the main box 1 and the volume occupied by the single cooling mechanism to cope with the small installation space of the engineering vehicle; at the same time, the inclined arrangement of the evaporator core 53 can increase the contact area between the evaporator core 53 and the air, thereby improving the cooling effect of the evaporator core 53 on the air.

[0048] When air comes into contact with the evaporator core 53, the water vapor in the air condenses into water on the surface of the evaporator core 53, and the water on the surface of the evaporator core 53 gathers into water droplets and drips down. By placing the cooling component 5 at the bottom of the heating component 3, the impact of the water droplets generated by the cooling component 5 during operation on the heating component 3 can be reduced, thereby improving the service life of the heating component 3.

[0049] Example 3 The difference between Example 3 and Example 1 is as follows: Reference Figure 7 and Figure 8 In this embodiment, the heating assembly 3 includes two spaced-apart PTC heaters 35. The main body of each PTC heater 35 is disposed in the receiving chamber 13, and the PTC heater 35 is used to heat air. Gaps for gas flow are provided between the two PTC heaters 35 and between the PTC heater 35 and the main housing 1. The PTC heaters 35 are used to heat air to adapt to the operating conditions of new energy engineering vehicles.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temperature regulation mechanism for the driver's cab of an engineering vehicle, characterized in that: The system includes a main housing (1), a blower (2), a heating assembly (3), a controller (4), and a filter element (6). The main housing (1) has an air inlet (11) and an air outlet (12), and a receiving chamber (13) is provided inside the main housing (1). The main housing (1) has a rectangular interlayer (14), and the filter element (6) is inserted into the interlayer (14) to cover the air inlet (11). The main body of the heating assembly (3) is located in the receiving chamber (13), and the heating assembly (3) is used to heat the air in the receiving chamber (13). The blower (2) drives the gas to flow sequentially through the air inlet (11), the heating assembly (3), and the air outlet (12), and the heated air flows to the cab through the air outlet (12). The controller (4) is used to control the operation of the heating assembly (3) and the blower (2).

2. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 1, characterized in that: The heating component (3) includes a water valve (31), a water supply pipe (32), and a heater core (33). The water valve (31) is located on the outside of the main housing (1), and the heater core (33) is located in the receiving chamber (13). The main housing (1) has an installation hole for the water supply pipe (32) to pass through. The water valve (31) is connected to the heater core (33) through the water supply pipe (32). The water valve (31) is connected to the engine water cooling system. The coolant of the engine water cooling system flows into the heater core (33) to heat the air flowing through the heater core (33).

3. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 2, characterized in that: The inner peripheral wall of the main housing (1) is provided with a support plate (34), which is used to support the warm air core (33).

4. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 1, characterized in that: The heating component (3) is a PTC heater (35), the main body of which is disposed in the receiving chamber (13), and the PTC heater (35) is used to heat air.

5. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 1, characterized in that: It also includes a refrigeration component (5), the main body of which is disposed in the receiving chamber (13). The refrigeration component (5) is used to cool the air in the receiving chamber (13), and the controller (4) is used to control the operation of the refrigeration component (5).

6. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 5, characterized in that: The refrigeration assembly (5) includes an expansion valve (51), a refrigerant delivery pipe (52), and an evaporator core (53). The expansion valve (51) is connected to the evaporator core (53) through the refrigerant delivery pipe (52). The expansion valve (51) is located outside the main housing (1). The evaporator core (53) is inclined in the receiving chamber (13). The expansion valve (51) is connected to an external refrigeration device.

7. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 6, characterized in that: Along the direction away from the air inlet (11), the elevation of the evaporator core (53) decreases.

8. The temperature regulation mechanism for the cab of an engineering vehicle according to claim 6, characterized in that: The cooling component (5) is located at the bottom of the heating component (3).

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