Control box for vehicle heating and vehicle heating system

Abstract

This utility model discloses a control box and a vehicle heating system for vehicle heating. The control box includes a box body and a preheater and a pressure reducing valve connected sequentially within the box body. The preheater is connected to a high-pressure gas tank via a pipe and is used to connect to an external gas source. The pressure reducing valve is used to reduce fuel pressure and is connected to the heater via a pipe. The control box and components of this vehicle heating system have a long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted heating, in particular to a control box for vehicle-mounted heating and a vehicle-mounted heating system. Background Art

[0002] At present, most of the large vehicles that use gas for cab heating have a pipeline connection between the gas tank and the heater, and a pressure reducing valve is set on the pipeline to reduce the pressure. Although heating can be achieved by using gas, the gas supply cannot be adjusted to achieve the purpose of regulating the temperature. General pressure reducing valves have certain requirements on the medium temperature when working. Since the gas tank uses high-pressure storage, the temperature of the released gas is low, and some of the gas will liquefy. In addition, the low outside temperature can easily damage the pressure reducing valve and shorten its service life. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a control box and a vehicle heating system which can preheat gas for vehicle heating.

[0004] In order to solve the above problems, the utility model provides a control box for vehicle heating, the control box comprising a box body and a preheater and a pressure reducing valve regulating valve which are connected in sequence and arranged in the box body, the preheater is connected to the high-pressure gas tank through a pipeline, the preheater is used to be connected to an external gas source, the pressure reducing valve is used to reduce the pressure of the fuel, and the pressure reducing valve is connected to the heater through a pipeline.

[0005] Furthermore, the preheater includes a preheating tube and a heater, wherein the heater is fixed on the preheating tube, the heater heats the preheating tube, and the preheating tube heats the fuel in the tube.

[0006] Furthermore, the heater has a receiving hole and an opening connected to the receiving hole, and the opening is used to adjust the size of the receiving hole of the heater.

[0007] Furthermore, the heater includes a heating shell, two locking plates arranged on the heating shell and a heating wire arranged in the heating shell. The heating shell is in the shape of an unclosed circular ring, the inner cavity of the circular ring constitutes a accommodating hole, the unclosed position constitutes an opening connected to the accommodating hole, the two locking plates are respectively located on both sides of the opening, and the locking plates are connected by a bolt assembly.

[0008] Furthermore, a plurality of brackets are arranged in the box body, and the preheater and the pressure reducing valve are respectively mounted on the corresponding brackets.

[0009] Furthermore, the box body has a mounting plate, and the mounting plate is provided with elongated mounting holes.

[0010] Furthermore, the box body includes a box bottom and a box cover installed on the box bottom and sealing the box bottom, and the box bottom is used to install the preheater and the pressure reducing valve.

[0011] Furthermore, the control box also includes a solenoid valve for controlling on and off, and the solenoid valve is located between the pressure reducing valve and the heater.

[0012] Furthermore, the control box also includes a regulating valve for adjusting the flow rate of the fuel, and the regulating valve is located at the rear end of the pressure reducing valve.

[0013] To solve the above problems, the utility model provides a vehicle-mounted heating system, which includes the control box described in any one of the above items, a gas alarm for detecting the concentration of gas in the air, a high-pressure gas storage tank connected to the control box through a pipeline and used to store gas fuel, and a heater connected to the control box through a pipeline.

[0014] The utility model uses a control box and a vehicle heating system for vehicle heating to heat the gas by using a preheater so that the temperature of the gas can reach the working temperature of subsequent components, so that the subsequent components are not affected by low temperature, thereby extending the service life of the subsequent components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred implementation of the vehicle-mounted heating system of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the control box.

[0017] Figure 3 It is a schematic diagram of the structure of the box.

[0018] Figure 4 It is a structural diagram of the preheater.

[0019] Figure 5 is a cross-sectional view of the heater.

[0020] Figure 6 It is a schematic diagram of the structure of the heating shell.

[0021] The meanings of the symbols in the accompanying drawings are:

[0022] High-pressure gas storage tank 1, control box 2, box body 21, box bottom 211, box cover 212, mounting plate 213, mounting hole 2131, bracket 214, preheater 22, preheating tube 221, heater 222, heating shell 2221, accommodating cavity 22210, accommodating hole 22211, opening 22212, locking plate 2222, heating wire 2223, bolt 2224, nut 2225, solenoid valve 23, pressure reducing valve 24, regulating valve 25, manual regulating switch 26, gas alarm 3, power supply 4, heater 5, wiring harness 6. DETAILED DESCRIPTION

[0023] The utility model will be further described below in conjunction with the accompanying drawings.

[0024] like Figure 1 and Figure 2 As shown, the preferred embodiment of the vehicle heating system of the utility model includes a high-pressure gas storage tank 1, a control box 2, a gas alarm 3, a power supply 4 and a heater 5. The high-pressure gas outlet tank and the heater 5 are connected by a pipeline. The control box 2 is arranged on the pipeline, that is, one end of the control box 2 is connected to the high-pressure gas storage tank 1 through a pipeline, and the other end of the control box 2 is connected to the heater 5 connected to the control box 2 through a pipeline. The high-pressure gas storage tank 1 is used to store gas, and the gas can be natural gas or coal gas. The high-pressure gas storage tank 1 adopts the tank body of the vehicle itself for storing gas, that is, the control box 2 is connected to the tank body of the vehicle itself for storing gas through a pipeline. The heater 5 is an existing conventional device, so its structure and principle are not repeated here. The gas alarm 3 is used to detect the concentration of gas in the air. When it exceeds the safety value, the gas alarm 3 alarms and reminds to close the pipeline. A control circuit board can also be set to control the control box 2 to disconnect the pipeline. The control circuit board is usually arranged in the heater 5. The control box 2 is electrically connected to the control circuit board through a wiring harness 6. The control circuit board is a conventional technology. If the heater 5 is accidentally turned off, the gas will continue to be supplied, and the gas concentration in the cab will increase. When the gas concentration exceeds a certain value, it will suffocate people. Therefore, the gas alarm 3 is set to detect and alarm, which can improve the safety of use. The power supply 4 is used to supply power to the heater 5, the control box 2 and the gas alarm 3.

[0025] Combination Figure 3For reference, the control box 2 includes a box body 21, a preheater 22, a solenoid valve 23, a pressure reducing valve 24 and a regulating valve 25, and the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are all installed in the box body 21, and the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are connected in sequence, and the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are all electrically connected to the control circuit board in the heater 5 through the wiring harness 6. The preheater 22 is connected to the high-pressure gas storage tank 1 through a pipeline. The preheater 22 is used to heat the fuel from the high-pressure gas storage tank 1, so that the gas is completely gasified and reaches a predetermined temperature at the same time, ensuring that the gas is within the operating temperature range required by the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 when passing through the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25, that is, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are not affected by low temperature, thereby extending the service life of the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25. The solenoid valve 23 is used to control the on-off, disconnecting the connection between the high-pressure gas storage tank 1 and the heater 5 as needed, that is, stopping the gas supply to the heater 5, such as when the heater 5 is turned off, or when the heater 5 is accidentally extinguished; the solenoid valve 23 is normally closed and is only opened when powered on, which can prevent accidental power failure and can be closed immediately to improve safety. The pressure reducing valve 24 is used to reduce the pressure of the fuel, ensuring that the pressure of the gas is within the pressure range required by subsequent components and will not damage subsequent components. The regulating valve 25 is used to adjust the flow rate of the fuel, and the power of the heater 5 is adjusted by adjusting the flow rate of the fuel. The power is set according to the demand. The regulating valve 25 is connected to the heater 5 through a pipeline. In order to better control, a manual regulating switch 26 for controlling the regulating valve 25 is provided in the cab. The manual regulating switch 26 is electrically connected to the control circuit board through the wiring harness 6. In order to better and more accurately adjust the flow rate, the regulating valve 25 adopts a proportional valve assembly, which has an independently controlled on-off solenoid valve and a proportional valve connected to the solenoid valve.

[0026] The box body 21 includes a box bottom 211, a box cover 212 and a mounting plate 213. The box bottom 211 is used to install the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25. A plurality of brackets 214 are arranged on the box bottom 211. The preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are respectively installed on the corresponding brackets 214. The brackets 214 can be arranged to make the axis of the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 through which the gas passes in a straight line by changing the height of the brackets 214, which is more convenient when connecting the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25. The box cover 212 is installed on the box bottom 211 by screws and closes the box bottom 211 to prevent dust from entering the box body 21 and reduce the dust attached to the preheater 22, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 as much as possible. The mounting plate 213 is mounted on the outer wall of the box bottom 211. The mounting plate 213 is provided with a long mounting hole 2131. The mounting plate 213 is installed in the cab through the mounting hole 2131. The mounting hole 2131 is set in a long strip shape, and the flange is used to fine-tune the installation position of the mounting plate 213.

[0027] like Figures 4 to 6 As shown, the preheater 22 includes a preheating tube 221 and a heater 222. One end of the heating tube is extended out to facilitate installation of the tube on the heating tube. The heater 222 is fixed on the preheating tube 221. The heater 222 heats the preheating tube 221, and the preheating tube 221 heats the fuel in the tube. The heater 222 has a receiving hole 22211 and an opening 22212 connected to the receiving hole 22211. When the heater 222 is installed on the preheating tube 221, the preheating tube 221 is located in the receiving hole 22211. The opening 22212 is used to adjust the size of the receiving hole 22211 of the heater 222, so that it can adapt to heating tubes of different sizes.

[0028] The heater 222 includes a heating shell 2221, two locking plates 2222 and a heating wire 2223. The heating shell 2221 has a heating cavity, and the heating wire 2223 is arranged in the heating cavity. The heating wire 2223 is used to convert electrical energy into thermal energy, and the heating shell 2221 transfers the thermal energy generated by the heating wire 2223 to the preheating tube 221; in order to better transfer heat, the heating shell 2221 is usually made of copper. The outer shape of the heating shell 2221 is an unclosed circular ring, and the inner cavity of the circular ring of the heating shell 2221 constitutes a receiving hole 22211, and the unclosed position constitutes an opening 22212 connected to the receiving hole 22211. Two locking plates 2222 are arranged on the heating shell 2221, and the two locking plates 2222 are respectively located on both sides of the opening 22212. The locking plates 2222 are connected by a bolt 2224 assembly, and a nut 2225 is usually fixed on one locking plate 2222. The bolt 2224 is used as a movable adjusting component, that is, the bolt 2224 passes through one locking plate 2222 and is screwed with the nut 2225 on the other locking plate 2222; the size of the opening 22212 can be adjusted when the bolt 2224 is rotated.

[0029] When in use, the solenoid valve 23 and the preheater 22 are opened, and the heater 5 can be ignited for heating. After being preheated, the gas passes through the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 in sequence and finally reaches the heater 5. The preheater 22 is used to heat the gas so that the temperature of the gas can reach the working temperature of the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25, ensuring that the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 can work at the required working temperature, that is, the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 are not affected by low temperature, and the service life of the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 is extended. The working temperature refers to the temperature of the medium under which the various performance indicators of the solenoid valve 23, the pressure reducing valve 24 and the regulating valve 25 can meet the predetermined requirements.

[0030] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A control box for vehicle heating, characterized in that: It includes a box body and a preheater and a pressure reducing valve regulating valve which are connected in sequence and arranged in the box body. The preheater is connected to the high-pressure gas storage tank through a pipeline. The preheater is used to connect to an external gas source. The pressure reducing valve is used to reduce the pressure of the fuel. The pressure reducing valve is connected to the heater through a pipeline.

2. The control box for vehicle heating according to claim 1, characterized in that: The preheater comprises a preheating tube and a heater, wherein the heater is fixed on the preheating tube, the heater heats the preheating tube, and the preheating tube heats the fuel in the tube.

3. The control box for vehicle heating according to claim 2, characterized in that: The heater has a receiving hole and an opening communicated with the receiving hole, and the opening is used to adjust the size of the heater receiving hole.

4. The control box for vehicle heating according to claim 3, characterized in that: The heater includes a heating shell, two locking plates arranged on the heating shell and a heating wire arranged in the heating shell. The heating shell is in the shape of an unclosed circular ring, the inner cavity of the circular ring constitutes a receiving hole, the unclosed position constitutes an opening connected to the receiving hole, the two locking plates are respectively located on both sides of the opening, and the locking plates are connected by a bolt assembly.

5. The control box for vehicle heating according to claim 1, characterized in that: A plurality of brackets are arranged in the box body, and the preheater and the pressure reducing valve are respectively mounted on corresponding brackets.

6. The control box for vehicle heating according to claim 1, characterized in that: The box body has a mounting plate, and the mounting plate is provided with a long mounting hole.

7. The control box for vehicle heating according to claim 1, characterized in that: The box body comprises a box bottom and a box cover which is installed on the box bottom and closes the box bottom. The box bottom is used for installing a preheater and a pressure reducing valve.

8. The control box for vehicle heating according to claim 1, characterized in that: The invention also comprises a solenoid valve for controlling on and off, wherein the solenoid valve is located between the pressure reducing valve and the heater.

9. The control box for vehicle heating according to claim 1, characterized in that: It also includes a regulating valve for adjusting the flow rate of the fuel, and the regulating valve is located at the rear end of the pressure reducing valve.

10. A vehicle heating system, characterized in that: It comprises the control box as claimed in any one of claims 1 to 9, a gas alarm for detecting the concentration of gas in the air, a high-pressure gas storage tank connected to the control box through a pipeline and used for storing gas fuel, and a heater connected to the control box through a pipeline.

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