Cab dehumidification control device and method

Abstract

The invention discloses a cab dehumidification control device and method, and belongs to the technical field of engineering machinery, the cab dehumidification control device comprises an air blower and a controller, an air inlet of the air blower is connected with a condensation pipeline, and the other end of the condensation pipeline is communicated with the outer side of a cab through an external air suction channel; an air outlet of the air blower is connected with an indoor air outlet channel through a heating assembly, the other end of the indoor air outlet channel is arranged in a cab, the condensation pipeline is vertically installed, the middle section of the indoor air outlet channel wraps the condensation pipeline, and the controller can detect the indoor humidity and the humidity of window glass. And opening and closing of the air blower and the heating assembly are controlled. The method has the advantages that the cost is low, and the indoor humidity control level can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a cab dehumidification control device and method. Background Art

[0002] At present, the air conditioning system of the excavator cab is generally only equipped with cooling and heating systems, but no dehumidification function. When the humidity of the outside air is high, the air is circulated through the air-conditioning outside, and the water condenses on the cab windows and other cold surfaces that affect visibility, which will affect the driver's cab and operation. At this time, the general practice is to heat the windows or heat the glass through heating wires, but this practice will also heat the air, causing the driver's comfort to decrease, making people uncomfortable and affecting comfort.

[0003] Technical solutions of the prior art (1) Existing air conditioning systems need to heat the glass or the glass surface in order to dehumidify the glass, which will affect the driver's comfort requirements.

[0004] (2) Adding a dehumidification system increases the cost of the entire machine and makes the spatial layout relatively complex.

[0005] Problems with existing technologies The current technical solutions cannot cost-effectively and conveniently perform dehumidification operations in the cab, and there is an urgent need for a simple control device and a method for effectively improving the humidity control level in the cab. Summary of the invention

[0006] The present invention aims to solve the technical problems mentioned in the above background technology. In a first aspect, a cab dehumidification control device is provided, which can control the humidity in the cab at a relatively low cost without affecting the driver's comfort and mechanical operation.

[0007] The second aspect provides a method, which is applied to the cab dehumidification control device provided in the first aspect, and can effectively improve the humidity control level in the cab.

[0008] According to the first aspect of the present invention, the technical solution provided by the present invention is: a cab dehumidification control device, including a blower and a controller, the air inlet of the blower is connected to a condensation duct, the other end of the condensation duct is connected to the outside of the cab through an external suction duct, the air outlet of the blower is connected to an indoor air outlet duct through a heating component, the other end of the indoor air outlet duct is arranged in the cab, the condensation duct is vertically installed, the middle section of the indoor air outlet duct is covered on the outside of the condensation duct, the controller can detect the humidity of the room and the window glass, and control the opening and closing of the blower and the heating component.

[0009] In some embodiments, the indoor air outlet duct is provided with a drain outlet at the lower end of the condensation duct.

[0010] In some embodiments, an indoor air suction port is also provided on the air inlet of the blower.

[0011] In some embodiments, the air inlet of the blower is connected to a gas flow valve, the other end of the gas flow valve is connected to an outer air inlet and an external suction duct, and the controller controls the opening and closing of the outer air inlet and the external suction duct by controlling the gas flow valve.

[0012] In some embodiments, the opening of the external air intake duct is arranged at the upper end of the outside of the cab, the blower is installed at the lower end of the outer side of the cab, and the outlet of the indoor air outlet duct is arranged at the upper end of the inside of the cab.

[0013] In some embodiments, the gas flow valve can be manually controlled.

[0014] In some embodiments, the controller also includes a temperature sensor installed outdoors, a temperature and humidity sensor installed indoors, and a humidity sensor installed on the vehicle window glass. The temperature and humidity sensors are both communicatively connected to the controller, and the controller is communicatively connected to the original vehicle air conditioning system.

[0015] According to the second aspect of the present invention, the technical solution provided by the present invention is: a method using the cab dehumidification control device of the first aspect.

[0016] In some embodiments, the method comprises the following steps: S1. Start or reset through the terminal; S2, read the user settings during normal startup in the previous step; S3, read the indoor humidity sensor data every five minutes, and compare whether the current indoor humidity is greater than the threshold set by the user; S4, after reading the indoor humidity sensor data, read the humidity sensor of the window glass, and compare whether the humidity value of the window glass is greater than the threshold set by the user; S5. According to the comparison result, the controller controls the corresponding device to work; S51: If the indoor humidity value exceeds the threshold value and the window glass humidity exceeds the threshold value, the dehumidification mode is turned on and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S52: If the indoor humidity value does not exceed the threshold value, but the window glass humidity exceeds the threshold value, the dehumidification mode is turned on, and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S53: If the indoor humidity value does not exceed the threshold value, and the window glass humidity does not exceed the threshold value, the non-dehumidification mode is turned on, and steps S3 to S5 are cycled; S6. Manually shut down the system at the terminal.

[0017] The advantages of the present invention compared with the prior art are: 1. It can control the humidity in the cab at a low cost; 2. It can effectively improve the humidity control level in the cab.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the dehumidification control principle of the cab according to an embodiment of the present invention; Figure 2 is a schematic diagram of a dehumidification mode of a cab dehumidification control device according to an embodiment of the present invention; Figure 3 is a schematic diagram of a non-dehumidification mode of a cab dehumidification control device according to an embodiment of the present invention; Figure 4 is a schematic diagram of a mixed dehumidification mode of a cab dehumidification control device according to an embodiment of the present invention; Figure 5 It is a control logic diagram of the cab dehumidification control device according to an embodiment of the present invention.

[0020] In the attached figure: 1. cab; 2. seat; 3. outer air inlet; 4. gas flow valve; 5. blower; 6. heating component; 7. drain outlet; 8. indoor air outlet duct; 9. external air intake duct; 10. indoor air intake port; 11. condensation duct. DETAILED DESCRIPTION

[0021] The present invention is described in further detail below.

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0023] Embodiment 1, a dehumidification control device for a cab 1, includes a blower 5 installed outdoors, an air inlet of the blower 5 extends deep into the room and is connected to a vertical condensation duct 11, the upper end of the condensation duct 11 is connected to the outside of the cab 1 through an external suction duct 9, an air outlet of the blower 5 is connected to an indoor air outlet duct 8 through a heating component 6, the indoor air outlet duct 8 extends into the room and is covered by the outside of the condensation duct 11, the air outlet of the indoor air outlet duct 8 is arranged in the cab 1, and the indoor air outlet duct 8 is provided with a drain port 7 at the lower end of the condensation duct 11.

[0024] The air inlet of the blower 5 is connected to a gas flow valve 4, and the other end of the gas flow valve 4 is connected to the outer air inlet 3 and the external air suction duct 9 (the lower end of the condensation pipe 11). The gas flow valve 4 can be controlled manually or by a controller.

[0025] An indoor air intake port 10 is also provided on the air intake pipe between the blower 5 and the gas flow valve 4. The opening of the indoor air intake port 10 is provided indoors and its opening and closing is controlled manually.

[0026] The controller includes a temperature sensor installed outdoors, a temperature and humidity sensor installed indoors, and a humidity sensor installed on the vehicle window glass. The temperature and humidity sensors are both connected to the controller for communication. The controller is connected to the original vehicle air-conditioning system for communication. The controller can detect the humidity of the room and the vehicle window glass, and control the opening and closing of the blower 5 and the heating component 6.

[0027] When the outdoor temperature sensor detects that the outside temperature is very low, the non-dehumidification mode can be used to avoid affecting the heating effect of the heater.

[0028] The flow valve can also be operated in a mixed manner, sucking in external air through the external suction duct 9 and the external air inlet 3 at the same time.

[0029] The flow valve can be operated manually or automatically. The automatic operation can be performed by detecting outdoor temperature, indoor temperature, indoor humidity and window glass humidity.

[0030] Embodiment 2 is different from Embodiment 1 in that the condensation duct 11 is placed outside the cab 1, and the rest is the same.

[0031] like Figure 1 As shown, the principle of the embodiment of the present invention is to detect the indoor humidity and glass humidity, and the controller controls the operation of the blower 5, the heating component 6, etc., and introduces external cooling air into the condensation duct 11. The air heated by the heating device flows through the condensation duct 11, and condensed water is formed on the outer surface of the duct. Before the warm air enters the interior of the cab 1, the moisture in the air is removed, thereby achieving the purpose of dehumidifying the air entering the room from the outside.

[0032] Combination Figure 2 As shown, in the dehumidification mode, the right channel of the gas flow valve 4 is opened, the left channel is closed (the outer air inlet 3 is closed), the indoor air intake port 10 is closed, and the outside air is sucked in through the external air intake duct 9 to reduce the temperature of the condensation pipe 11. After the air is heated by the heating component 6 and flows through the outer wall of the condensation pipe 11, the moisture in the air condenses on the outer wall of the condensation pipe 11 to form condensed water, which is discharged outdoors through the drain port 7.

[0033] Combination Figure 3As shown, in the non-dehumidification mode, the left channel of the gas flow valve 4 is opened and the right channel is closed (the external air intake duct 9 is closed), and the outside air enters the blower 5 through the outer air inlet 3, and is directly blown toward the cab 1 after being heated by the heating component 6.

[0034] Combination Figure 4 As shown, when the indoor humidity is high, the mixed dehumidification mode is turned on, the right channel of the gas flow valve 4 is opened, the left channel is closed (the outer air inlet 3 is closed), the indoor air intake port 10 is opened, and the outside air is sucked in through the external air intake duct 9, and the indoor air enters through the indoor air intake port 10. After the air is heated by the heating component 6 and flows through the outer wall of the condensation pipe 11, the moisture in the air condenses on the outer wall of the condensation pipe 11 to form condensed water, which is discharged to the outside through the drain port 7.

[0035] Combination Figure 5 As shown, a method for controlling the above dehumidification device is provided, comprising the following steps: S1. Start or reset through the terminal; S2, read the user settings during normal startup in the previous step; S3, read the indoor humidity sensor data every five minutes, and compare whether the current indoor humidity is greater than the threshold set by the user; S4, after reading the indoor humidity sensor data, read the humidity sensor of the window glass, and compare whether the humidity value of the window glass is greater than the threshold set by the user; S5. According to the comparison result, the controller controls the corresponding device to work; S51: If the indoor humidity value exceeds the threshold value and the window glass humidity exceeds the threshold value, the dehumidification mode is turned on and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S52: If the indoor humidity value does not exceed the threshold value, but the window glass humidity exceeds the threshold value, the dehumidification mode is turned on, and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S53: If the indoor humidity value does not exceed the threshold value, and the window glass humidity does not exceed the threshold value, the non-dehumidification mode is turned on, and steps S3 to S5 are cycled; S6. Manually shut down the system at the terminal.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cab dehumidification control device, characterized in that: The invention comprises a blower (5) and a controller, wherein the air inlet of the blower (5) is connected to a condensation duct (11), the other end of the condensation duct (11) is connected to the outside of the cab (1) through an external air suction duct (9), the air outlet of the blower (5) is connected to an indoor air outlet duct (8) through a heating component (6), the other end of the indoor air outlet duct (8) is arranged in the cab (1), the condensation duct (11) is installed vertically, and the middle section of the indoor air outlet duct (8) is covered outside the condensation duct (11), and the controller can detect the humidity of the room and the window glass, and control the opening and closing of the blower (5) and the heating component (6).

2. The cab dehumidification control device according to claim 1, characterized in that: The indoor air outlet duct (8) is provided with a drainage outlet (7) at the lower end of the condensation pipe (11).

3. The cab dehumidification control device according to claim 1, characterized in that: The air inlet of the blower (5) is also provided with an indoor air suction port (10).

4. The cab dehumidification control device according to claim 1, characterized in that: The air inlet of the blower (5) is connected to a gas flow valve (4), the other end of the gas flow valve (4) is connected to an outer air inlet (3) and an outer air suction duct (9), and the controller controls the opening and closing of the outer air inlet (3) and the outer air suction duct (9) by controlling the gas flow valve (4).

5. The cab dehumidification control device according to claim 1, characterized in that: The opening of the external air suction duct (9) is arranged at the upper end of the exterior of the cab (1), the blower (5) is installed at the lower end of the exterior of the cab (1), and the air outlet of the indoor air outlet duct (8) is arranged at the upper end of the interior of the cab (1).

6. The cab dehumidification control device according to claim 1, characterized in that: The gas flow valve (4) can be manually controlled.

7. The cab dehumidification control device according to claim 6, characterized in that: The controller also includes a temperature sensor installed outdoors, a temperature and humidity sensor installed indoors, and a humidity sensor installed on the vehicle window glass. The temperature and humidity sensors are all communicatively connected to the controller, and the controller is communicatively connected to the original vehicle air conditioning system.

8. A method, characterized in that: The cab dehumidification control device according to any one of claims 1 to 7 is used.

9. The method according to claim 8, characterized in that: S1. Start or reset through the terminal; S2, read the user settings during normal startup in the previous step; S3, read the indoor humidity sensor data every five minutes, and compare whether the current indoor humidity is greater than the threshold set by the user; S4, after reading the indoor humidity sensor data, read the humidity sensor of the window glass, and compare whether the humidity value of the window glass is greater than the threshold set by the user; S5. According to the comparison result, the controller controls the corresponding device to work; S6. Manually shut down the system at the terminal.

10. The method according to claim 8, characterized in that: S5. According to the comparison result, the controller controls the corresponding device to work; S51: If the indoor humidity value exceeds the threshold value and the window glass humidity exceeds the threshold value, the dehumidification mode is turned on and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S52: If the indoor humidity value does not exceed the threshold value, but the window glass humidity exceeds the threshold value, the dehumidification mode is turned on, and the original vehicle air conditioning system is controlled to turn on the cold defog mode until the window glass humidity is less than the threshold value, the cold defog mode is stopped, and the window glass humidity is read cyclically to compare whether the indoor humidity and the window glass humidity exceed the threshold value; S53: If the indoor humidity value does not exceed the threshold value and the window glass humidity does not exceed the threshold value, the non-dehumidification mode is turned on and steps S3 to S5 are looped.

Images