PTC (Positive Temperature Coefficient) liquid heater for vehicle

Abstract

The PTC liquid heater for the vehicle comprises a shell, and a water inlet pipe and a water outlet pipe are arranged at the two ends of the shell respectively. A heating mechanism and a control mechanism are arranged in the shell; the heating mechanism comprises a channel, a first insulating layer, a heating layer, a second insulating layer and a heat conducting sheet; the heating layer comprises a liquid collecting plate, a plurality of electric heating strips are arranged in the liquid collecting plate, and channels are formed between the electric heating strips and the liquid collecting plate; the right end of the liquid collecting plate is communicated with a water outlet pipe; a first insulating layer is arranged above the liquid collecting plate, and a second insulating layer is arranged below the liquid collecting plate; a temperature sensor is arranged on the water outlet pipe; the temperature sensor and the electric heating strip are connected with a control mechanism; a bin body is arranged outside the control mechanism, and the bin body is sealed and connected with the shell. The heating device has the advantages of simple structure, high safety, high heating efficiency and convenience in temperature adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle heating equipment, and more specifically to a vehicle PTC liquid heater. Background Art

[0002] New energy vehicles, especially electric vehicles, do not have the heat source provided by fuel engines. Air conditioning and battery preheating systems need to be equipped with electric heaters to obtain heat sources, and PTC heaters are widely used.

[0003] The PTC (Positive Temperature Coefficient) heater is a special heater, a device used for heating the interior of a car, consisting of a heating element, a fan, a controller, and a mounting box. Generally, the heating element is composed of a thermistor, a resistor, a heat pipe, etc. Due to the characteristics of the heating element, the power of the heater is usually low, generally only a few dozen watts. The heater's fan is driven by a motor, which can blow the heat heated by the heating element into the car, thereby raising the temperature inside the car.

[0004] For pure electric vehicles, there is no engine as a heating source, and electric heaters are mostly used, especially PTC liquid heaters, which are used as standard accessories for electric vehicles. If the water pipes have failures such as leakage, it is easy to affect the control mechanism and heating mechanism, and then cause the heater to stop working.

[0005] Therefore, there is an urgent need for a vehicle-use PTC liquid heater. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a vehicle-used PTC liquid heater to solve the problems in the background technology.

[0007] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0008] A vehicle PTC liquid heater comprises a shell, with a water inlet pipe and a water outlet pipe respectively arranged at both ends of the shell; a heating mechanism and a control mechanism are arranged in the shell, the heating mechanism comprises a channel, a first insulating layer, a heating layer, a second insulating layer, and a heat conducting sheet; the heating layer comprises a liquid collecting plate, a plurality of evenly arranged electric heating strips are arranged in the liquid collecting plate, a channel is formed between the electric heating strips and the liquid collecting plate, and the heat conducting sheet is located in the channel and connected to the electric heating strips; the left end of the liquid collecting plate is connected to the water inlet pipe, and the right end of the liquid collecting plate is connected to the water outlet pipe; a first insulating layer is arranged above the liquid collecting plate, a second insulating layer is arranged below the liquid collecting plate, and the first insulating layer and the second insulating layer are tightly connected to cover the liquid collecting plate; a temperature sensor is arranged on the water outlet pipe, and the temperature sensor and the electric heating strips are both connected to the control mechanism; a bin body is arranged outside the control mechanism, and the bin body is sealed and connected to the shell.

[0009] To further optimize the technical solution, three heating mechanisms are arranged in parallel.

[0010] To further optimize the technical solution, a first manifold is arranged between the liquid collecting plate and the water inlet pipe, and the two pipes are connected through the first manifold; a second manifold is arranged between the liquid collecting plate and the water outlet pipe, and the two pipes are connected through the second manifold.

[0011] To further optimize the technical solution, the control mechanism is connected to the three heating mechanisms respectively to achieve separate control to change the number of heating mechanisms involved in heating.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0013] The utility model provides a vehicle PTC liquid heater, which realizes insulation isolation between a heating mechanism and a control mechanism by setting a first insulating layer and a second insulating layer, improves heating efficiency by setting a heating layer and a heat conducting sheet, and realizes control of the working quantity of the heating layer by connecting the heating layer to the control mechanism independently. The utility model has the advantages of simple structure, high safety, high heating efficiency, and convenient temperature adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the heating layer in the utility model;

[0016] Among them: 1. Shell, 2. Heating mechanism, 21. Channel; 22. First insulating layer; 23. Heating layer; 24. Second insulating layer; 25. Heat conducting sheet; 3. Control mechanism; 4. Water inlet pipe; 5. Water outlet pipe; 6. First manifold; 7. Second manifold. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] A PTC liquid heater for vehicle, combined with Figure 1 to Figure 2 As shown, it includes a housing 1, a heating mechanism 2, a control mechanism 3, a water inlet pipe 4, a water outlet pipe 5, a first manifold 6, and a second manifold 7. The heating machine includes a channel 21, a first insulating layer 22, a heating layer 23, a second insulating layer 24, and a heat conducting sheet 25.

[0019] A water inlet pipe 4 and a water outlet pipe 5 are respectively arranged at two ends of the housing 1 .

[0020] A heating mechanism 2 and a control mechanism 3 are arranged inside the shell 1, and a warehouse body is arranged outside the control mechanism 3, and the warehouse body is sealed and connected to the shell.

[0021] Three heating mechanisms 2 are arranged in parallel in the housing 1. The control mechanism 3 is connected to the three heating mechanisms 2 respectively to realize separate control to change the number of heating mechanisms 2 involved in heating. The heating mechanism 2 includes a channel 21, a first insulating layer 22, a heating layer 23, a second insulating layer 24, and a heat conductive sheet 25. The heating layer 23 includes a liquid collecting plate, and a plurality of evenly arranged electric heating strips are arranged in the liquid collecting plate, and a channel 21 is formed between the electric heating strips and the liquid collecting plate. The heat conductive sheet 25 is located in the channel 21, and the heat conductive sheet 25 increases the heating efficiency.

[0022] The left end of the liquid collecting plate is connected to the water inlet pipe 4, and a first manifold 6 is arranged between the liquid collecting plate and the water inlet pipe 4 and the two are connected through the first manifold 6. The right end of the liquid collecting plate is connected to the water outlet pipe 5, and a second manifold 7 is arranged between the liquid collecting plate and the water outlet pipe 5 and the two are connected through the second manifold 7.

[0023] A first insulating layer 22 is disposed above the liquid collecting plate, and a second insulating layer 24 is disposed below the liquid collecting plate. The first insulating layer 22 and the second insulating layer 24 are tightly connected to cover the liquid collecting plate.

[0024] A temperature sensor is arranged on the water outlet pipe 5 , and the temperature sensor and the electric heating strip are both connected to the control mechanism 3 .

[0025] The control mechanism 3 includes a circuit board and a control board, and the circuit board is electrically connected to the heating mechanism 2 and the control board respectively. The control board controls the working number of the liquid collecting plates in the heating mechanism 2 through the circuit board.

[0026] When the utility model is actually used, water enters the first manifold 6 of the liquid heater from the water inlet pipe 4, enters the channel 21 through the first manifold 6, and the electric heating strip and the heat conducting sheet 25 in the channel 21 heat the water. The heated water flows out of the water outlet pipe 5 after passing through the second manifold 7. The temperature sensor on the water outlet pipe 5 feeds back the sensed water temperature to the control mechanism 3, and the control mechanism 3 controls the working quantity of the heating mechanism 2 to adjust the water temperature. The control mechanism 3 and the heating mechanism 2 are isolated and sealed respectively, which reduces the possibility of the heater stopping working due to water leakage.

Claims

1. A PTC liquid heater for a vehicle, characterized in that: The invention comprises a shell (1), wherein two ends of the shell (1) are respectively provided with a water inlet pipe (4) and a water outlet pipe (5); a heating mechanism (2) and a control mechanism (3) are arranged in the shell (1), the heating mechanism (2) comprises a channel (21), a first insulating layer (22), a heating layer (23), a second insulating layer (24), and a heat conducting sheet (25); the heating layer (23) comprises a liquid collecting plate, a plurality of evenly arranged electric heating strips are arranged in the liquid collecting plate, a channel (21) is formed between the electric heating strips and the liquid collecting plate, and the heat conducting sheet (25) is located in the channel (21). ) and connected to the electric heating strip; the left end of the liquid collecting plate is connected to the water inlet pipe (4), and the right end of the liquid collecting plate is connected to the water outlet pipe (5); a first insulating layer (22) is arranged above the liquid collecting plate, and a second insulating layer (24) is arranged below the liquid collecting plate, and the first insulating layer (22) and the second insulating layer (24) are tightly connected to cover the liquid collecting plate; a temperature sensor is arranged on the water outlet pipe (5), and the temperature sensor and the electric heating strip are both connected to the control mechanism (3); a storage body is arranged outside the control mechanism (3), and the storage body is sealed and connected to the shell.

2. A vehicle PTC liquid heater according to claim 1, characterized in that: Three heating mechanisms (2) are arranged in parallel.

3. The vehicle PTC liquid heater according to claim 1, characterized in that: A first manifold (6) is arranged between the liquid collecting plate and the water inlet pipe (4), and the two are connected via the first manifold (6); a second manifold (7) is arranged between the liquid collecting plate and the water outlet pipe (5), and the two are connected via the second manifold (7).

4. The vehicle PTC liquid heater according to claim 1, characterized in that: The control mechanism (3) is connected to the three heating mechanisms (2) respectively, so as to realize separate control to change the number of heating mechanisms (2) involved in heating.

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