Fuel excavator air conditioner auxiliary heating system and method

Abstract

The invention discloses an auxiliary heating system for an air conditioner of a fuel excavator. The auxiliary heating system comprises an air conditioning system, an auxiliary heating system, an auxiliary heating controller and a temperature sensor, the temperature sensor is used for collecting the temperature of an air blower of the air conditioning system and the temperature of an air outlet of an air conditioner air duct. The auxiliary heating system comprises an auxiliary heating device and an auxiliary power supply; the auxiliary heating device is arranged at the tail end of the air conditioning system, and the auxiliary power supply provides electric energy for the auxiliary heating device; the auxiliary heating controller is configured to control the heating operation state of the auxiliary heating system according to the temperature sensor; the auxiliary heating system is further connected with a whole vehicle generator, and an electric energy source of the auxiliary heating system is controlled through an auxiliary heating controller. The auxiliary heating device is additionally arranged at the air outlet of the air conditioner air duct, auxiliary electric energy is used for conducting auxiliary heating on air at the air outlet of the air conditioner air duct, the effect of starting warm air rapid heating is achieved, and the comfort of a driver is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to an air-conditioning auxiliary heating system and method for a fuel excavator. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] A fuel excavator is a type of construction machinery that uses diesel as fuel and is widely used in the fields of construction, mining, road construction, etc. As the core equipment of construction machinery, it often works in low or extremely cold working environments. The air conditioning and heating system of existing fuel excavators mainly relies on the heat of the engine coolant for heating. However, in winter or extremely cold working environments, it takes a long time for the coolant temperature to reach the heating demand after the engine is started, which causes the air conditioning and heating system that relies on the waste heat of the coolant to have a slow heating response speed and low heating efficiency, which in turn causes the cab to heat up slowly and the driver's comfort to be poor. Moreover, if you want to start the air conditioning and heating system when the excavator does not need to work, you still need to start the entire vehicle, which has a high fuel cost. In addition, the air conditioning and heating system of existing fuel excavators requires the intervention of the driver, which is cumbersome to operate and lacks intelligence. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide an auxiliary heating system and method for the air conditioner of a fuel excavator. Before the coolant temperature rises, auxiliary electric energy is used for heating, so as to improve the situation of slow temperature rise and poor heating effect in winter or extremely cold working environments, achieve the effect of rapid heating by turning on the warm air, and improve the comfort of the driver.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] On the one hand, the technical solution of the present invention provides an air conditioning auxiliary heating system for a fuel excavator, comprising: an air conditioning system, an auxiliary heating system, an auxiliary heating controller and a temperature sensor;

[0007] Wherein, the temperature sensor is used to collect the blower temperature of the air conditioning system and the air outlet temperature of the air conditioning duct; the auxiliary heating system includes an auxiliary heating device and an auxiliary power supply; the auxiliary heating device is arranged at the end of the air conditioning system, and the auxiliary power supply is used to provide electric energy for the auxiliary heating device; the auxiliary heating controller is configured to control the heating operation state of the auxiliary heating system according to the temperature sensor;

[0008] The auxiliary heating system is also connected to the vehicle generator, and the power source of the auxiliary heating system is controlled by an auxiliary heating controller.

[0009] In at least one embodiment, the auxiliary heating controller communicates with the vehicle controller, the air conditioning system, and the auxiliary heating system via a CAN line.

[0010] In at least one embodiment, the auxiliary power supply is isolated from the vehicle power supply and supplies power to the auxiliary heating device before the vehicle is started and in the initial stage of the vehicle start-up.

[0011] In at least one embodiment, the temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged at the air outlet of the air-conditioning system blower; the second temperature sensor is arranged at the air outlet of the air-conditioning duct; the first temperature sensor and the second temperature sensor transmit the collected temperature data to the auxiliary heating controller.

[0012] In at least one embodiment, a first switch and a second switch are provided in the auxiliary heating controller; the auxiliary heating controller is configured to disconnect or connect the first switch and the second switch according to different working conditions to achieve power management.

[0013] In at least one embodiment, when the first switch and the second switch are both turned on, the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time;

[0014] When the first switch is disconnected and the second switch is connected, the auxiliary power supply supplies power to the auxiliary heating device;

[0015] When the first switch is turned on and the second switch is turned off, the auxiliary power supply is charged by the vehicle generator, and the auxiliary heating device is not started.

[0016] On the other hand, the technical solution of the present invention also provides a fuel excavator air conditioner auxiliary heating method, comprising:

[0017] After the air conditioning heater is turned on, the auxiliary heating controller obtains the air outlet temperature of the air conditioning system blower and compares it with the first set temperature;

[0018] If the air outlet temperature of the air conditioning system blower is greater than the first set temperature, the auxiliary heating system does not operate;

[0019] If the air outlet temperature of the air conditioning system blower is lower than the first set temperature, the auxiliary heating controller controls the auxiliary heating system to operate; the auxiliary heating controller obtains the air outlet temperature of the air conditioning duct and compares it with the second set temperature;

[0020] If the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system stops heating; if the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system continues heating.

[0021] In at least one embodiment, the second set temperature is a safety temperature threshold in the vehicle.

[0022] In at least one embodiment, the second set temperature is greater than the first set temperature.

[0023] In at least one embodiment, when the auxiliary heating system is started and the entire vehicle is not started, the auxiliary heating controller disconnects the first switch and connects the second switch, and the auxiliary power supply supplies power to the auxiliary heating device;

[0024] The auxiliary heating controller detects the vehicle startup status in real time. When it detects that the vehicle has completed startup, the auxiliary heating controller turns on the first switch and the second switch, and the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time.

[0025] The beneficial effects of the technical solution of the present invention are as follows:

[0026] 1) The air conditioning auxiliary heating system of a fuel excavator of the present invention adds an auxiliary heating device at the air outlet of the air conditioning duct. When the whole vehicle is not started or not fully started, the auxiliary heating device is powered by an additional auxiliary power supply. Before the coolant temperature rises, the auxiliary electric energy is used to perform additional auxiliary heating on the air at the air outlet of the air conditioning duct, thereby improving the slow heating and poor heating effect of the air conditioning system of the fuel excavator in winter or extremely cold working environments, achieving the effect of rapid heating when the warm air is turned on, and improving the comfort of the driver.

[0027] 2) The auxiliary power supply of the present invention is isolated from the power supply of the whole vehicle, and supplies power to the auxiliary heating device before and during the initial stage of vehicle startup. After the vehicle is fully started, the auxiliary heating device is supplied power by the generator of the whole vehicle, thereby realizing power management and avoiding affecting the starting performance of the battery of the whole vehicle.

[0028] 3) The present invention uses temperature sensors to collect the temperatures of the air outlet of the air-conditioning system blower and the air outlet of the air-conditioning duct and compares them with the set temperature, automatically turning on or off the auxiliary heating system without the driver having to perform additional operations. The intelligent start and stop of the auxiliary heating module is achieved through temperature feedback, realizing fully automatic control of the auxiliary heating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 It is a schematic diagram of the structure of an air-conditioning auxiliary heating system for a fuel excavator according to the present invention;

[0031] Figure 2This is a schematic diagram of the electrical principle of an air-conditioning auxiliary heating system for a fuel excavator according to the present invention;

[0032] Figure 3 It is a heating flow chart of a fuel excavator air conditioner auxiliary heating method of the present invention;

[0033] Figure 4 The present invention discloses a power supply control flow chart of an air-conditioning auxiliary heating system for a fuel excavator. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] As introduced in the background technology, the purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide an auxiliary heating system and method for the air conditioning of a fuel excavator. Before the coolant temperature rises, auxiliary electric energy is used for heating to improve the slow heating and poor heating effect in winter or extremely cold working environments, so as to achieve the effect of rapid heating by turning on the warm air and improve the comfort of the driver.

[0036] Example 1

[0037] In a typical embodiment of the present invention, Figure 1 As shown, this embodiment discloses an air conditioning auxiliary heating system for a fuel excavator, including: an air conditioning system, an auxiliary heating system, an auxiliary heating controller and a temperature sensor;

[0038] Among them, the temperature sensor is used to collect the blower temperature of the air conditioning system and the air outlet temperature of the air conditioning duct; the auxiliary heating system includes an auxiliary heating device and an auxiliary power supply; the auxiliary heating device is arranged at the end of the air conditioning system, and the auxiliary power supply is used to provide electric energy for the auxiliary heating device; the auxiliary heating controller is configured to control the heating operation state of the auxiliary heating system according to the temperature sensor;

[0039] The auxiliary heating system is also connected to the vehicle generator, and the power source of the auxiliary heating system is controlled by the auxiliary heating controller.

[0040] In this embodiment, an auxiliary heating device is installed at the end of the air duct of the air conditioning system. The auxiliary heating device can be powered by an auxiliary power supply. Before the coolant temperature of the fuel excavator is increased, the auxiliary heating device is used to heat the air at the air outlet of the air conditioning duct, thereby achieving the effect of rapid heating by turning on the warm air, thereby improving the comfort of the driver.

[0041] In this embodiment, if Figure 2As shown, the auxiliary heating controller communicates with the vehicle controller, the air conditioning system, and the auxiliary heating system via a CAN line.

[0042] In this embodiment, the auxiliary power supply is isolated from the vehicle power supply, and supplies power to the auxiliary heating device before the vehicle is started and in the initial stage of the vehicle start-up.

[0043] In this embodiment, the temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged at the air outlet of the air conditioning system blower for real-time detection of the temperature of the air outlet of the air conditioning system blower and transmits the collected temperature data to the auxiliary heating controller in real time; the second temperature sensor is arranged at the air outlet of the air conditioning duct for real-time detection of the temperature of the air outlet of the air conditioning duct and transmits the collected temperature data to the auxiliary heating controller in real time. It should be noted that after the second temperature sensor is arranged at the auxiliary heating device, the temperature data of the air outlet of the air conditioning duct collected by it is the temperature of the air after being heated by the auxiliary heating device.

[0044] In this embodiment, the auxiliary heating controller is provided with a first switch 1 and a second switch 2. Figure 2 As shown. The auxiliary heating controller disconnects or connects the first switch 1 and the second switch 2 according to different working conditions to achieve power management. When the first switch 1 and the second switch 2 are both turned on, the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time; when the first switch 1 is disconnected and the second switch 2 is connected, the auxiliary power supply supplies power to the auxiliary heating device; when the first switch 1 is connected and the second switch 2 is disconnected, the vehicle generator charges the auxiliary power supply, and the auxiliary heating device does not start at this time. The auxiliary power supply works in conjunction with the vehicle generator to achieve efficient energy utilization and avoid affecting the starting performance of the battery.

[0045] Example 2

[0046] In a typical embodiment of the present invention, Figure 3 As shown, this embodiment discloses a fuel excavator air conditioner auxiliary heating method, comprising:

[0047] After the driver turns on the air conditioning heater, the auxiliary heating controller reads the message x1CFF9060 through CAN1, obtains the blower outlet temperature in real time through Temp_Return_Bro, and compares it with the first set temperature;

[0048] If the air outlet temperature of the air conditioning system blower is greater than the first set temperature, the heating temperature of the air conditioning system itself reaches the first set temperature, and no additional auxiliary heating is required, so the auxiliary heating system does not operate;

[0049] If the air outlet temperature of the air conditioning system blower is lower than the first set temperature, the heating temperature of the air conditioning system itself cannot meet the first set temperature, and additional auxiliary heating is required to quickly increase the temperature. Therefore, the auxiliary heating controller controls the auxiliary heating system to operate, and the auxiliary heating device quickly heats the air at the end of the air conditioning duct, so that the air temperature at the air outlet of the air conditioning duct reaches a suitable temperature, thereby improving the comfort of the driver;

[0050] The auxiliary heating controller reads the message 0x1CFF9061 through CAN1, obtains the air outlet temperature of the air conditioning duct in real time through Temp_Return_Bro1, and compares it with the second set temperature. It should be noted that the second set temperature is the safety temperature threshold in the car, which should be greater than the first set temperature.

[0051] If the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system stops heating; if the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system continues heating.

[0052] In this embodiment, if Figure 4 As shown in the figure, after the air conditioning and heating system is started, the auxiliary heating controller will disconnect or connect the first switch 1 and the second switch 2 according to different working conditions to achieve power management and avoid affecting the operation of the whole vehicle:

[0053] The auxiliary heating system is started, and when the vehicle is started, the auxiliary heating controller turns on the first switch 1 and the second switch 2, and the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time;

[0054] When the auxiliary heating system is started and the vehicle is not started, the auxiliary heating controller controls the first switch 1 to be disconnected and the second switch 2 to be connected, and the auxiliary power supply supplies power to the auxiliary heating device. When the auxiliary heating controller detects that the vehicle has been started, the first switch 1 and the second switch 2 are connected again, and the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air conditioning auxiliary heating system for a fuel excavator, characterized in that: include: Air conditioning system, auxiliary heating system, auxiliary heating controller and temperature sensor; Wherein, the temperature sensor is used to collect the blower temperature of the air conditioning system and the air outlet temperature of the air conditioning duct; the auxiliary heating system includes an auxiliary heating device and an auxiliary power supply; the auxiliary heating device is arranged at the end of the air conditioning system, and the auxiliary power supply is used to provide electric energy for the auxiliary heating device; the auxiliary heating controller is configured to control the heating operation state of the auxiliary heating system according to the temperature sensor; The auxiliary heating system is also connected to the vehicle generator, and the power source of the auxiliary heating system is controlled by an auxiliary heating controller.

2. The fuel excavator air conditioning auxiliary heating system according to claim 1, characterized in that: include: The auxiliary heating controller is connected and communicated with the vehicle controller, the air conditioning system, and the auxiliary heating system via a CAN line.

3. The fuel excavator air conditioning auxiliary heating system according to claim 1, characterized in that: include: The auxiliary power supply is isolated from the whole vehicle power supply and supplies power to the auxiliary heating device before the vehicle is started and in the initial stage of the vehicle starting.

4. The fuel excavator air conditioning auxiliary heating system according to claim 1, characterized in that: include: The temperature sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged at the air outlet of the air-conditioning system blower; the second temperature sensor is arranged at the air outlet of the air-conditioning duct; the first temperature sensor and the second temperature sensor transmit the collected temperature data to the auxiliary heating controller.

5. The fuel excavator air conditioning auxiliary heating system according to claim 1, characterized in that: include: The auxiliary heating controller is provided with a first switch and a second switch; the auxiliary heating controller disconnects or connects the first switch and the second switch according to different working conditions to achieve power management.

6. The fuel excavator air conditioning auxiliary heating system as claimed in claim 5, characterized in that: include: When the first switch and the second switch are both turned on, the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time; When the first switch is disconnected and the second switch is connected, the auxiliary power supply supplies power to the auxiliary heating device; When the first switch is turned on and the second switch is turned off, the auxiliary power supply is charged by the vehicle generator, and the auxiliary heating device is not started.

7. A fuel excavator air conditioner auxiliary heating method, characterized in that: include: After the air conditioning heater is turned on, the auxiliary heating controller obtains the air outlet temperature of the air conditioning system blower and compares it with the first set temperature; If the air outlet temperature of the air conditioning system blower is greater than the first set temperature, the auxiliary heating system does not operate; If the air outlet temperature of the air conditioning system blower is lower than the first set temperature, the auxiliary heating controller controls the auxiliary heating system to operate; the auxiliary heating controller obtains the air outlet temperature of the air conditioning duct and compares it with the second set temperature; If the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system stops heating; if the air outlet temperature of the air conditioning duct is greater than the second set temperature, the auxiliary heating system continues heating.

8. The fuel excavator air conditioner auxiliary heating method according to claim 7, characterized in that: include: The second set temperature is a safety temperature threshold in the vehicle.

9. The fuel excavator air conditioner auxiliary heating method according to claim 7, characterized in that: include: The second set temperature is greater than the first set temperature.

10. The fuel excavator air conditioner auxiliary heating method according to claim 7, characterized in that: include: When the auxiliary heating system is started and the vehicle is not started, the auxiliary heating controller disconnects the first switch and connects the second switch, and the auxiliary power supply supplies power to the auxiliary heating device; The auxiliary heating controller detects the vehicle startup status in real time. When it detects that the vehicle has completed startup, the auxiliary heating controller turns on the first switch and the second switch, and the vehicle generator supplies power to the auxiliary heating device and charges the auxiliary power supply at the same time.

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