阅读说明：本技术 一种自动控制的曲轴箱通风管接头加热装置 (Automatically controlled heating device for crankcase ventilation pipe joint ) 是由 王宇 汪龙华 庄辉 李云雷 孟壮壮 陈小龙 于 2021-06-16 设计创作，主要内容包括：本发明涉及一种自动控制的曲轴箱通风管接头加热装置,包括壳体、加热材料、温控装置、电源线,所述的加热材料设置在壳体表面或者壳体内部；所述壳体包覆在通风管接头上,壳体设有内层和外层,加热材料铺设在外层上；内层覆盖在加热材料上,并且和外层内表面紧密结合；温控装置通过连接线和插接头连接；加热材料的一端通过电源线和插接头连接。曲轴箱通风管接头加热装置连通电源后,温控装置能够自动控制接头加热装置上加热材料的连通和断路,在发动机启动时加热通风管接头融化通风管接头位置的结冰冰块,同时在发动机运行时解决混合气体流经曲轴箱通风管后在接头位置的凝水结冰问题。(The invention relates to an automatically controlled heating device for a crankcase ventilation pipe joint, which comprises a shell, a heating material, a temperature control device and a power line, wherein the heating material is arranged on the surface of the shell or in the shell; the shell is covered on the ventilation pipe joint and is provided with an inner layer and an outer layer, and the heating material is laid on the outer layer; the inner layer is covered on the heating material and is tightly combined with the inner surface of the outer layer; the temperature control device is connected with the plug connector through a connecting wire; one end of the heating material is connected with the plug through a power line. After the crankcase ventilation pipe joint heating device is communicated with a power supply, the temperature control device can automatically control the connection and disconnection of a heating material on the joint heating device, the heating ventilation pipe joint melts ice blocks at the position of the ventilation pipe joint when an engine is started, and meanwhile, the problem that mixed gas freezes in condensed water at the position of the joint after flowing through the crankcase ventilation pipe is solved when the engine runs.)

1. An automatically controlled heating device for a crankcase ventilation pipe joint is characterized by comprising a shell, a heating material, a temperature control device and a power line, wherein the heating material is arranged on the surface of the shell or in the shell; the shell is covered on the ventilation pipe joint and is provided with an inner layer and an outer layer, and the heating material is laid on the outer layer; the inner layer is covered on the heating material and is tightly combined with the inner surface of the outer layer; the temperature control device is connected with the plug connector through a connecting wire; one end of the heating material is connected with the plug through a power line.

2. An automatically controlled heating device for a crankcase ventilation manifold as claimed in claim 1 wherein said temperature control means includes a temperature control switch for switching on the heating material when the temperature is below a predetermined temperature, based on a predetermined temperature value, the temperature control switch being in contact therewith; when the temperature is higher than the set temperature point, the heating material is disconnected, and the temperature control switch contact is disconnected; or according to a set temperature value, when the temperature is lower than a set temperature point, the heating material is communicated, and the temperature control switch contact is disconnected; when the temperature is higher than the set temperature point, the heating material is switched off, and the temperature control switch is switched on.

3. An automatically controlled crankcase ventilation manifold connection heating apparatus as claimed in claim 1, wherein said temperature control switch is a bimetallic temperature control switch or a magnetically sensitive temperature control switch.

4. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 1, wherein said temperature control means is temperature controlled in the range of 0-150 ℃.

5. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 3, wherein said thermostat is a normally closed or normally open thermostat.

6. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 1, wherein said housing is a rubber housing, a plastic housing or a composite housing.

7. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 1, wherein said heating material is a resistance wire or a heating tape or sheet.

8. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 1, wherein said heater material is wrapped with an insulating material for insulation and heat shielding.

9. An automatically controlled crankcase ventilation manifold connection heating device as claimed in claim 1, wherein said connection heating device has a heating power in the range of 1-30000 watts per square meter.

10. An automatically controlled crankcase ventilation manifold connection heater as claimed in claim 1, wherein said power cord is electrically connected to the engine and optionally to the vehicle.

Technical Field

The invention relates to an engine structure, in particular to a crankcase ventilation pipe joint heating device.

Background

Crankcase ventilation systems are one of the important components of engines, whose main function is to reasonably control crankcase pressure; separating oil and gas in the axle box discharge, and returning the separated engine oil to an oil sump; and secondly, guiding mixed gas consisting of unburned fuel gas, water vapor, waste gas and the like in the crankcase to an air inlet pipe through a connecting pipe, returning the mixed gas to the cylinder for re-combustion, or discharging the mixed gas to the atmosphere.

Because the mixed gas of the crankcase contains a large amount of water, under the cold environment in winter, when the mixed gas of the crankcase at high temperature flows through the ventilating pipe at low temperature, the water vapor in the mixed gas is condensed into water drops. Generally, the crankcase ventilation pipe can be connected with other joints on the oil-gas separator or the base body, and because the joint position is usually located lower position, the water droplet that vapor condenses into in the gas mixture can deposit at the joint position, and then freezes and form the ice-cube to cause the ventilation pipe to block up, make crankcase pressure increase, cause the sealed department seepage machine oil, serious machine oil can get into the cylinder and burn, finally lead to the engine to scrap.

At present, aiming at the icing problem of the joint position connected with the crankcase ventilation pipe, common solutions mainly comprise the following solutions: firstly, a heating structure is arranged on a joint and an ECU unit is adopted to control heating, such as a PTC heater; secondly, a cavity is arranged on the joint, and engine cooling liquid or exhaust high-temperature gas is utilized to flow in the cavity to further heat the joint; thirdly, heating materials are arranged on the ventilation pipe, and the joint is heated by utilizing the heated gas in the ventilation pipe, so that icing is prevented.

The heating structure arranged on the joint, such as a PTC heater, has low design freedom, needs to open a special die and has high production cost. The joint is provided with a cavity, and engine cooling liquid or exhaust high-temperature gas is utilized to flow in the cavity to further heat the joint, the scheme of heating a water pipe or a gas pipe is limited by the space of the whole vehicle, and the heating water pipe shunts the engine cooling liquid to influence the heat dissipation of the engine; in addition, when the engine coolant or the exhaust high-temperature gas is cold started at low temperature, a certain temperature rise process exists, and the deicing speed is low. The heating material is arranged on the ventilation pipe, and the joint is heated by using the heated gas in the ventilation pipe, so that the icing is prevented, the heating efficiency is low, and the ice melting speed is low when the engine is started.

Disclosure of Invention

Aiming at the problems that in the prior art, the melting speed of ice blocks is low and ice is easy to freeze in the crankcase ventilation pipe joint, the invention provides the automatically-controlled heating device for the crankcase ventilation pipe joint.

The invention is realized by the following technical scheme:

an automatically controlled heating device for a crankcase ventilation pipe joint comprises a shell, a heating material, a temperature control device and a power line, wherein the heating material is arranged on the surface of the shell or in the shell; the shell is covered on the ventilation pipe joint and is provided with an inner layer and an outer layer, and the heating material is laid on the outer layer; the inner layer is covered on the heating material and is tightly combined with the inner surface of the outer layer; the temperature control device is connected with the plug connector through a connecting wire; one end of the heating material is connected with the plug through a power line.

Further, the temperature control device comprises a temperature control switch, the heating material is communicated when the temperature is lower than a set temperature point according to a set temperature value, and the contact of the temperature control switch is connected; when the temperature is higher than the set temperature point, the heating material is disconnected, and the temperature control switch contact is disconnected; or according to a set temperature value, when the temperature is lower than a set temperature point, the heating material is communicated, and the temperature control switch contact is disconnected; when the temperature is higher than the set temperature point, the heating material is switched off, and the temperature control switch is switched on.

Further, the temperature control switch is a bimetal temperature control switch or a magnetic-sensitive temperature control switch.

Furthermore, the temperature control range of the temperature control device is 0-150 ℃.

Further, the temperature control device is a normally closed or normally open temperature control switch.

Further, the shell is a rubber shell, a plastic shell or a composite shell.

Furthermore, the heating material is a resistance wire, a heating belt or a heating sheet.

Furthermore, the heating material is wrapped by an insulating material for insulation and heat insulation.

Further, the heating power range of the joint heating device is 1-30000 watts/square meter.

Furthermore, the power line is connected with a motor circuit and can also be connected with a whole vehicle circuit.

Compared with the prior art, the invention has the following advantages:

the automatically controlled heating device for the crankcase ventilation pipe joint does not change the arrangement structure of the original crankcase ventilation pipe joint. Through setting up temperature control device, the automatic control heating material heats and stops the heating, improves crankcase ventilation pipe joint's inner wall temperature, reduces the temperature difference of the high temperature gas mixture that comes out in the engine and crankcase ventilation pipe joint inner wall, solves the gas mixture and freezes the problem at the water of congealing of ventilation pipe joint inner chamber under the cold environment of low temperature, need not extra occupation space simultaneously and arranges the pipeline introduction heat current. The automatic control heating device for the crankcase ventilation pipe joint can be additionally arranged on the original crankcase ventilation pipe joint, only a heating power circuit is needed, and the temperature control device can automatically control the heating circuit to be opened and closed, so that the automatic control heating device is simple in structure, safe, reliable and strong in universality.

Drawings

Fig. 1 is an assembly view of a crankcase ventilation pipe joint heating apparatus and an air-oil separator according to embodiment 1 of the invention;

FIG. 2 is a diagram of a product in the assembled form of the crankcase ventilation duct joint heater according to embodiment 1 of the invention;

fig. 3 is a product diagram of a heating device for a crankcase ventilation duct joint according to embodiment 1 of the invention in supply form;

FIG. 4 is an exploded view of the housing and electrical details of the crankcase ventilation duct joint heater assembly of embodiment 1 of the present invention;

FIG. 5 is a detailed view of a snap-fit portion of the crankcase ventilation duct joint heater assembly of embodiment 1 of the invention;

FIG. 6 is a snap-fit assembly view of the crankcase ventilation duct joint heater assembly of embodiment 1 of the invention;

fig. 7 is an assembly view of a crankcase ventilation pipe joint heating device and an air-oil separator according to embodiment 2 of the invention;

fig. 8 is a diagram of a product in an assembled form of a crankcase ventilation duct joint heating device according to embodiment 2 of the invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Example 1

Referring to fig. 1, a crankcase ventilation duct joint heating apparatus 100 includes a housing 105, a heating material 200 (not shown), power lines 210 and 215, a temperature control device 220, and a plug 230. In the figure, 900 is an oil separator, and 910 is a vent pipe joint (integrated with the oil separator). The housing 105 is covered on the air pipe joint 910, and the housing 105 can be designed according to the shape of the air pipe joint 910, made into a profile structure (see fig. 2), and then can be tightly attached to the air pipe joint 910, so that the heat transfer efficiency of the housing 105 and the air pipe joint 910 is improved. A joint heating apparatus 100 having a shape before assembly as shown in fig. 3, the shape before assembly being determined according to a molding process to facilitate molding; the assembled shape is shown in fig. 2 and may be secured by means of snaps, clips, ties, tape, etc., in this case by snap-fastening, as shown in particular in fig. 5 and 6.

As shown in fig. 4, the housing 105 is provided with an inner layer 110 and an outer layer 120. The outer layer 120 and the inner layer 110 can be formed by adopting rubber materials, plastic materials, metal materials and composite materials, and the forming process is determined according to different material types; in this case, the outer layer 120 and the inner layer 110 are made of rubber materials, and molding, glue injection and injection processes can be adopted. The heating material 200 can be a resistance wire, an electric heating belt or an electric heating piece; in this case the antipyretic material 200 is a resistance wire. Firstly, forming the outer layer 120, then laying the heating wire heating material 200 on the outer layer 120, according to the heating power requirement of the joint heating device 100, adopting profiling laying or bending laying, and laying the resistance wire heating material 200 meeting the heating power requirement on the inner surface of the outer layer 120; then the inner layer 110 is covered on the resistance wire heating material 200 and is tightly combined with the inner surface of the outer layer 120; the covering process can adopt mould pressing, glue injection, injection or glue adhesion and the like, and in this case, the covering process adopts mould pressing.

As shown in fig. 4, the resistance wire heating material 200 is laid on the outer layer 120; the temperature control device 220 is a kick type temperature controller, and the kick type temperature controller 220 has connection lines 222 and 224 (in this case, the temperature control device 220 is installed outside the housing, fixed on the ventilation pipe (not shown), or fixed on the gas-oil separator 900 or other positions). One end of the resistance wire heating material 200 is connected with a connecting wire 224 on the snap-through thermostat temperature control device 220 (or one end of the resistance wire heating material 200 can be directly connected with a connecting point of the snap-through thermostat temperature control device 220), and then the snap-through thermostat temperature control device 220 is connected with a plug 230 through a connecting wire 222; one end of the resistance wire heating material 200 is connected with the plug 230 through the power wire 210 (or one end of the resistance wire heating material 200 is directly connected with the plug, because the resistance wire can generate temperature, the heat resistance requirement of the plug is higher under the condition). The connector 230 can be connected with the engine circuit or the whole vehicle circuit (without using the connector 230, the connection line 222 of the resistance wire heating material 200 and the kick type temperature controller 220 can be directly connected with the engine circuit or the whole vehicle circuit). The power lines 210 and 215 may be wrapped around the bellows for insulation and wear protection.

The temperature control device 200 controls the temperature range to be 0-180 ℃, and suitably 5-80 ℃, and a normally closed sudden-jump type temperature controller (KSD-5/80) is selected. The temperature controller (KSD-5/80) controls the temperature range to be 5-80 ℃, the temperature controller is connected at 5 ℃ and below 5 ℃, the resistance wire heating material 200 and the power wire 210 are communicated, and the heating material 200 is heated at the moment; the temperature controller is disconnected at 80 degrees and above 80 degrees, the resistance wire heating material 200 and the power line 210 are cut off, and the resistance wire heating material 200 is not heated at the moment. When the temperature rises from 5 ℃ or below 5 ℃ to a range of more than 5 ℃ and less than 80 ℃, the temperature controller is in a switch-on state at the moment, the resistance wire heating material 200 is communicated with the power wire 210, and the resistance wire heating material 200 is heated at the moment; when the temperature is reduced from 80 degrees or 80 degrees to a range of more than 5 degrees below 80 degrees, the temperature controller is in a disconnected state, the resistance wire heating material 200 and the power wire 210 are cut off, and the resistance wire heating material 200 stops heating.

The resistance wire heating material 200 is 0.1-100 ohm/m, preferably 10-80 ohm/m, and is selected to be 20 ohm/m and laid on the inner surface of the outer layer 120. The heating power of the joint heating apparatus 100 is 1-30000 w/m, suitably 1000-. The resistance of the resistance wire is basically unchanged during working, the current is constant under stable voltage, and the power of the resistance wire can be regarded as a standard quantity. By calibrating the joint heating device 100, the cavity of the ventilation pipe joint 910 changes between two temperatures (within a temperature range), and the joint heating device 100 can prevent the mixed gas from generating condensed water and icing; if during the engine start-up phase, the joint heating apparatus 100 is able to generate heat, melt ice that has frozen, and prevent the crankcase pressure from rising.

The operation of the crankcase ventilation duct joint heating device 100 of the present invention is as follows:

the temperature control device 220 is a temperature controller (KSD-5/80), the temperature controller is connected at 5 ℃ and below 5 ℃, the resistance wire heating material 200 and the power line 210 are communicated, and at the moment, the resistance wire heating material 200 is heated; the thermostat is switched off at 80 degrees and above 80 degrees, the heating material 200 and the power line 210 are cut off, and the resistance wire heating material 200 is not heated at the moment. When the temperature rises from 5 ℃ or below 5 ℃ to above 5 ℃ and is below 80 ℃, the temperature controller is in a connection state at the moment, the heating material 200 is communicated with the power line 210, and the resistance wire heating material 200 is heated at the moment; when the temperature is reduced from 80 degrees or 80 degrees to below 80 degrees and is above 5 degrees, the temperature controller is in a disconnected state, the resistance wire heating material 200 and the power wire 210 are cut off, and the resistance wire heating material 200 stops heating.

In use, the joint heating device 100 is mounted on a vent joint 910 of the gas-oil separator 900 (see fig. 1), and the temperature control device 200 thereon is mounted on a vent pipe (here shown). In a cold and low-temperature environment, when the vehicle stops working and the engine is turned off, mixed gas still exists in the ventilation pipe joint 910 of the oil-gas separator 900, and the mixed gas is easy to condense and freeze; when the engine is started, the ventilation pipe joint 910 contains ice blocks which are frozen, when the temperature control device 220 detects that the temperature of the position contacting with the ventilation pipe (not shown) is lower than 5 ℃, the temperature control device 220 is opened, the resistance wire heating material 200 is supplied with power through the plug 140, the power wire 130 and the temperature control device 120, the resistance wire heating material 200 starts to be heated, heat conduction is carried out through the inner layer 110 of the joint heating device 100, and then the ventilation pipe joint 910 of the oil-gas separator 900 is heated, so that the temperature of the inner wall of the ventilation pipe joint 910 is increased. Meanwhile, the mixed gas from the gas inlet 150 has a high temperature, so that the inner wall of the air pipe joint 910 can be heated, and ice blocks contacting with the mixed gas can be melted. When the temperature of the inner wall of the vent pipe joint 910 rises to be higher than 0 ℃, ice blocks contacting with the inner wall of the vent pipe joint 910 begin to melt into water, the melted water flows under the action of the pressure and gravity of the mixed gas, meanwhile, the resistance wire heating material 200 on the joint heating device 100 continuously heats, more ice blocks melt into water, the frozen ice blocks can be melted under the action of the heat generated by the mixed gas with higher temperature (when the ice blocks are partially melted, the mixed gas can be partially circulated in the inner cavity of the vent pipe) and the heating material, and the mixed gas can be normally circulated in the vent pipe joint 910.

When a vehicle runs in a cold low-temperature environment, when the temperature controller 220 detects that the temperature of the position in contact with the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller 220 is opened, the resistance wire heating material 200 is supplied with power through the plug 230, the power wire 210 and the temperature controller 220, the resistance wire heating material 200 is heated, heat conduction is carried out through the inner layer 110 of the joint heating device 100, the ventilation pipe joint 910 of the oil-gas separator 900 is further heated, the temperature of the inner wall of the ventilation pipe joint 910 is increased, and the phenomenon that water vapor condensed water in mixed gas is frozen or more water vapor condensed water is avoided.

If the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is increased to between 5 and 80 ℃, the temperature controller temperature control device 220 is in a connection state, the resistance wire heating material 200 realizes power supply through the plug 230, the power wire 210 and the temperature controller temperature control device 220, and the resistance wire heating material 200 continuously heats.

Along with the continuous co-operation of the engine, the mixed gas temperature rising pipe flows through the ventilation pipe, when the temperature of the contact position of the temperature control device 220 and the ventilation pipe joint is 80 ℃ or higher than 80 ℃, the temperature control device 220 detects that the temperature of the contact position of the temperature control device 220 and the ventilation pipe joint is higher than 80 ℃, the temperature control device 220 is disconnected or in a disconnected state, the temperature control device 220 enables the resistance wire heating material 200 to be powered off, and the resistance wire heating material 200 stops heating.

Because the vehicle is in a cold low-temperature environment, the low-temperature air contacts the outer wall of the ventilation pipe, and then the ventilation pipe is cooled, so that the temperature of the ventilation pipe is reduced; when the temperature of the contact position of the thermostat temperature control device 220 and the joint of the vent pipe is 5 degrees or more than 5 degrees, the thermostat temperature control device 220 is in a disconnected state. When the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller temperature control device 220 detects that the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller temperature control device 220 is switched on, the plug 230, the power line 210 and the temperature controller temperature control device 220 are communicated to supply power, the resistance wire heating material 220 starts heating, and the heating process of the ventilation pipe joint 910 of the oil-gas separator 900 is repeated.

The temperature controller 220 monitors the temperature of the position in contact with the ventilation pipe joint, the connection and disconnection are repeated between 5 ℃ and 80 ℃, the resistance wire heating material 200 is controlled to heat and stop heating, the temperature of the inner wall of the ventilation pipe joint 910 of the oil-gas separator 900 is maintained in a proper range, the temperature difference between high-temperature mixed gas and the inner wall of the ventilation pipe is reduced, and the phenomenon that water vapor in the mixed gas is condensed and freezes or more water vapor is condensed is avoided.

Example 2

This embodiment is a modification of embodiment 1. Referring to fig. 7, a crankcase ventilation duct joint heating device 100 includes a housing 105, a heating material 200 (not shown), a power line 210, a temperature control device 220, and a plug 230. In the figure, 900 is an oil separator, and 910 is a vent pipe joint (integrated with the oil separator). The housing 105 is covered on the air pipe joint 910, and the housing 105 can be designed according to the shape of the air pipe joint 910, made into a profiling structure (see fig. 8), and then can be tightly attached to the air pipe joint 910, so that the heat transfer efficiency of the housing 105 and the air pipe joint 910 is improved.

As shown in fig. 8, the temperature control device 220 is assembled inside the housing 105, and the temperature control device 220 is a kick type temperature controller, model number KSD-5/80; in this case, the outer layer 120 of the housing 105 is made of rubber, and a recess for accommodating the temperature control device 220 is formed on the housing 105 by a compression molding process, and the recess can accommodate the temperature control device 220. And the shell 105 covers the ventilation pipe joint 910 on the oil separator 900, so that the temperature control device 220 is attached to the ventilation pipe joint 910, and the temperature of the ventilation pipe joint can be measured relatively sensitively.

As shown in fig. 4, the resistance wire heating material 200 is laid on the outer layer 120; the temperature control device 220 of the kick type temperature controller is respectively provided with connecting lines 222 and 224; the power lines are 210 and 215. One end of the resistance wire heating material 200 is connected with a connecting wire 224 on the kick type temperature controller temperature control device 220 through a power wire 210, and is connected with a plug 230 through a connecting wire 222 on the kick type temperature controller temperature control device 220; one end of the resistive wire heating material 200 is connected to a plug 230 via a power cord 215. The connector 230 may be connected to the engine circuit or the vehicle circuit. The power lines 210 and 215 may be wrapped around the bellows for insulation and wear protection.

The working process of the crankcase ventilation pipe joint heating device of the embodiment is as follows:

the temperature control device 220 is a temperature controller (KSD-5/80), the temperature controller is connected at 5 ℃ and below 5 ℃, the resistance wire heating material 200 and the power line 210 are communicated, and at the moment, the resistance wire heating material 200 is heated; the thermostat is switched off at 80 degrees and above 80 degrees, the heating material 200 and the power line 210 are cut off, and the resistance wire heating material 200 is not heated at the moment. When the temperature rises from 5 ℃ or below 5 ℃ to above 5 ℃ and is below 80 ℃, the temperature controller is in a connection state at the moment, the heating material 200 is communicated with the power line 210, and the resistance wire heating material 200 is heated at the moment; when the temperature is reduced from 80 degrees or 80 degrees to below 80 degrees and is above 5 degrees, the temperature controller is in a disconnected state, the resistance wire heating material 200 and the power wire 210 are cut off, and the resistance wire heating material 200 stops heating.

In use, the joint heating device 100 is mounted on the vent joint 910 of the oil separator 900 (see fig. 1), and the temperature control device 200 thereon is mounted on the vent joint 910. In a cold and low-temperature environment, when the vehicle stops working and the engine is turned off, mixed gas still exists in the ventilation pipe joint 910 of the oil-gas separator 900, and the mixed gas is easy to condense and freeze; when the engine is started, the ventilation pipe joint 910 contains ice blocks which are frozen, when the temperature control device 220 detects that the temperature of the position in contact with the ventilation pipe joint is lower than 5 ℃, the temperature control device 220 is opened, the resistance wire heating material 200 is powered through the plug 140, the power wire 130 and the temperature control device 120, the resistance wire heating material 200 starts to be heated, heat conduction is carried out through the inner layer 110 of the joint heating device 100, and then the ventilation pipe joint 910 of the oil-gas separator 900 is heated, so that the temperature of the inner wall of the ventilation pipe joint 910 is increased. Meanwhile, the mixed gas from the gas inlet 150 has a high temperature, so that the inner wall of the air pipe joint 910 can be heated, and ice blocks contacting with the mixed gas can be melted. When the temperature of the inner wall of the vent pipe joint 910 rises to be higher than 0 ℃, ice blocks contacting with the inner wall of the vent pipe joint 910 begin to melt into water, the melted water flows under the action of the pressure and gravity of the mixed gas, meanwhile, the resistance wire heating material 200 on the joint heating device 100 continuously heats, more ice blocks melt into water, the frozen ice blocks can be melted under the action of the heat generated by the mixed gas with higher temperature (when the ice blocks are partially melted, the mixed gas can be partially circulated in the inner cavity of the vent pipe) and the heating material, and the mixed gas can be normally circulated in the vent pipe joint 910.

When a vehicle runs in a cold low-temperature environment, when the temperature controller 220 detects that the temperature of the position in contact with the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller 220 is opened, the resistance wire heating material 200 is supplied with power through the plug 230, the power wire 210 and the temperature controller 220, the resistance wire heating material 200 is heated, heat conduction is carried out through the inner layer 110 of the joint heating device 100, the ventilation pipe joint 910 of the oil-gas separator 900 is further heated, the temperature of the inner wall of the ventilation pipe joint 910 is increased, and the phenomenon that water vapor condensed water in mixed gas is frozen or more water vapor condensed water is avoided.

If the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is increased to between 5 and 80 ℃, the temperature controller temperature control device 220 is in a connection state, the resistance wire heating material 200 realizes power supply through the plug 230, the power wire 210 and the temperature controller temperature control device 220, and the resistance wire heating material 200 continuously heats.

Along with the continuous co-operation of the engine, the mixed gas temperature rising pipe flows through the ventilation pipe, when the temperature of the contact position of the temperature control device 220 and the ventilation pipe joint is 80 ℃ or higher than 80 ℃, the temperature control device 220 detects that the temperature of the contact position of the temperature control device 220 and the ventilation pipe joint is higher than 80 ℃, the temperature control device 220 is disconnected or in a disconnected state, the temperature control device 220 enables the resistance wire heating material 200 to be powered off, and the resistance wire heating material 200 stops heating.

Because the vehicle is in a cold low-temperature environment, the low-temperature air contacts the outer wall of the ventilation pipe, and then the ventilation pipe is cooled, so that the temperature of the ventilation pipe is reduced; when the temperature of the contact position of the thermostat temperature control device 220 and the joint of the vent pipe is 5 degrees or more than 5 degrees, the thermostat temperature control device 220 is in a disconnected state. When the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller temperature control device 220 detects that the temperature of the contact position of the temperature controller temperature control device 220 and the ventilation pipe joint is 5 ℃ or lower than 5 ℃, the temperature controller temperature control device 220 is switched on, the plug 230, the power line 210 and the temperature controller temperature control device 220 are communicated to supply power, the resistance wire heating material 220 starts heating, and the heating process of the ventilation pipe joint 910 of the oil-gas separator 900 is repeated.

The temperature controller 220 monitors the temperature of the position in contact with the ventilation pipe joint, the connection and disconnection are repeated between 5 ℃ and 80 ℃, the resistance wire heating material 200 is controlled to heat and stop heating, the temperature of the inner wall of the ventilation pipe joint 910 of the oil-gas separator 900 is maintained in a proper range, the temperature difference between high-temperature mixed gas and the inner wall of the ventilation pipe is reduced, and the phenomenon that water vapor in the mixed gas is condensed and freezes or more water vapor is condensed is avoided.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

The examples of the present invention are illustrative of the present invention and not limiting thereof. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope and spirit of the invention. For example, some portion of the functionality illustrated or described for one particular mechanism may be used for another particular mechanism to yield a new mechanism. The heating and ventilation device in the embodiment can be used for a crankcase ventilation pipe on an engine to prevent water condensation of mixed gas in the ventilation pipe to further cause engine oil emulsification, can also be applied to the ventilation pipe of a vehicle oil tank to improve the intake air temperature to improve the extraction efficiency of fuel oil adsorbed on activated carbon in a carbon canister, and can be applied to a urea pipe for commercial vehicle exhaust aftertreatment to simplify the heating control of the urea pipe by adopting a temperature control device. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims or the equivalents thereof.