CN210105945U - One-way valve integrated heater device for crankcase ventilation system - Google Patents

Abstract

The utility model discloses a one-way valve integrated heater device for a crankcase ventilation system, which comprises a one-way valve upper shell, a diaphragm, an integrated shell, a heater assembly and a heat-conducting aluminum pipe; the upper shell of the one-way valve provides a pipe orifice for assembling with a ventilation pipeline of a crankcase; the diaphragm is used for adjusting the flow resistance parameter of the ventilation gas of the crankcase; the heater assembly realizes the function of electrifying and heating; the heat conducting aluminum pipe conducts heat generated by the heater assembly, and heating of ventilation gas of the crankcase is achieved. The utility model discloses a to crankcase ventilation gas heating, promote gaseous temperature, solve the freezing jam problem of crankcase ventilation system well pipeline and check valve effectively.

Description

One-way valve integrated heater device for crankcase ventilation system

Technical Field

The utility model relates to an automobile crankcase ventilation system part, in particular to integrated heater unit of check valve for crankcase ventilation system.

Background

At present, in order to meet the emission requirements of the regulations in the state of light automobile pollutant emission limit and measurement method (sixth stage of china) for the pollutants in the crankcase, that is, to prevent any pollutants from being emitted into the atmosphere, the ventilation system of the engine crankcase needs to be designed reasonably. In a passenger vehicle carrying a turbocharged engine, because of the influence of factors such as power assembly platformization, cabin arrangement of the whole vehicle and the like, under the running working condition of the whole vehicle in a high and cold environment, a ventilation pipeline of an engine crankcase is blocked after a high-load crankcase ventilation pipeline and a one-way valve are frozen, so that the pressure in the engine crankcase is overhigh, the problems of ejection of an oil rule, outward turning of a sealing oil seal, leakage of engine oil and the like are caused, finally, pollutants in the crankcase are discharged into the atmosphere, and the requirements of the national emission regulations cannot be met.

Disclosure of Invention

The utility model aims at solving the above problems, and providing a crankcase is check valve integrated heater device for ventilation system.

The utility model comprises an upper casing of the one-way valve, an integrated casing, a lower casing structure of the one-way valve, a heater assembly packaging structure, a heater assembly, a plug connector, a positive terminal, a positive spring, a guide sleeve, a plate electrode, a PTC heating element, a heat conducting block, a negative spring, a negative terminal, a diaphragm and a heat conducting aluminum pipe; the upper shell of the one-way valve is in welded connection with the lower shell of the one-way valve, the plug connector is in welded connection with the heater assembly packaging structure, the plug connector is connected with the positive terminal and the negative terminal through an insert injection molding process, and the heat-conducting aluminum pipe is connected with the heater assembly packaging structure through an insert injection molding process; the diaphragm is assembled between the upper shell of the one-way valve and the lower shell structure of the one-way valve; the heater assembly is characterized in that all components in the heater assembly are assembled into a heater assembly packaging structure in sequence by adopting an assembly process, a guide sleeve, a plate electrode and a PTC heating element are sequentially stacked on the surface of a heat conducting block, the plate electrode and the PTC heating element are assembled into hole positions corresponding to the guide sleeve, a positive electrode spring and a negative electrode spring are assembled into the hole positions corresponding to the guide sleeve, one side of each positive electrode spring is respectively contacted with a positive electrode terminal and a negative electrode terminal, and the other side of each positive electrode spring is respectively contacted with the plate electrode and the heat conducting block.

The upper shell of the one-way valve provides a pipe orifice for assembling with a crankcase ventilation pipeline, and the pipe orifice can be divided into a rubber pipe clamp form and a quick connector form; a diaphragm for adjusting a crankcase ventilation gas flow resistance parameter; the integrated shell integrates a lower one-way valve shell structure and a heater assembly packaging structure, wherein the lower one-way valve shell structure is used for optimizing the flow state of a ventilation gas outlet of a crankcase, and the heater assembly packaging structure is used for packaging a heater assembly so as to meet the requirement of the protection grade of an electrical element; the heater assembly is composed of a plug connector, a positive terminal, a negative terminal, a positive spring, a negative spring, a guide sleeve, a plate electrode, a PTC heating element and a heat conducting block, and realizes the function of electrifying and heating; the heat conduction aluminum pipe conducts heat generated by the heater assembly, and the heating effect on ventilation gas of the crankcase is achieved.

The welding process method can be hot plate welding, rotary welding, vibration friction welding, laser welding and the like; the plug connector is connected with the positive terminal and the negative terminal, and the heat conduction aluminum pipe is connected with the heater assembly packaging structure of the integrated shell by adopting an insert injection molding process; the diaphragm is assembled between the one-way valve upper shell and the one-way valve lower shell structure of the integrated shell through an assembly process.

The utility model discloses a working process:

when the turbocharged engine works under a high-load working condition, the crankcase ventilation gas flows in from the opening of the upper shell of the one-way valve through the high-load crankcase ventilation pipeline, enters the lower shell structure of the one-way valve of the integrated shell through the diaphragm and finally flows out through the heat-conducting aluminum pipe. After the plug connector of the one-way valve integrated heater device is electrified, current sequentially flows through the positive terminal, the positive spring, the electrode plate, the PTC heating element, the heat conducting block, the negative spring and the negative terminal in sequence, and forms a current closed loop with a power supply. Under the action of the current heat effect, the surface temperature of the PTC heating element can be rapidly raised in a short time, the generated heat is transferred to the surface of the heater assembly packaging structure of the integrated shell through the heat conducting block in a contact heat transfer and heat radiation mode and then transferred to the heat conducting aluminum pipe embedded into the integrated shell, and the heat conducting aluminum pipe heats gas flowing through the high-load crankcase ventilation gas in the length range of the heat conducting aluminum pipe in a convection heat transfer and heat radiation mode, so that the gas temperature is raised. The PTC heating element is in the form of a thermistor, the resistance value of the PTC heating element is sharply increased along with the temperature rise to a certain degree, when a current loop is in an open circuit state, the heating efficiency is extremely low, the temperature of the PTC heating element does not continuously rise any more, and therefore the problem of thermal damage caused by infinite temperature rise is solved.

The utility model has the advantages that:

1. the utility model can improve the flexibility of the arrangement of the crankcase ventilation system of the turbocharged engine in the whole engine compartment;

2. the utility model can be connected with the air inlet pipeline in front of the turbocharger inlet of the turbocharged engine in a non-detachable way, such as welding, so that the engine can automatically perform leakage diagnosis on a crankcase ventilation system under a high-load working condition depending on the working state, thereby reducing the calibration work of the whole vehicle and reducing the development cost;

3. the utility model discloses can heat high load crankcase ventilation gas, promote the gas temperature of flowing through, solve among the crankcase ventilation system effectively that pipeline and check valve freeze the jam problem.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an axial cross-sectional view of the present invention;

fig. 3 is a perspective exploded view of the heater assembly of the present invention.

In the figure, 1, a one-way valve upper shell, 2, an integrated shell, 3, a one-way valve lower shell structure, 4, a heater assembly packaging structure, 5, a heater assembly, 6, a plug connector, 7, a positive terminal, 8, a positive spring, 9, a guide sleeve, 10, an electrode plate, 11, a PTC heating element, 12, a heat conduction block, 13, a negative spring, 14, a negative terminal, 15, a diaphragm and 16, a heat conduction aluminum pipe.

Detailed Description

Referring to fig. 1, 2 and 3, the present invention includes an upper casing 1 of a check valve, an integrated casing 2, a lower casing structure 3 of the check valve, a heater assembly packaging structure 4, a heater assembly 5, a plug 6, a positive terminal 7, a positive spring 8, a guide sleeve 9, an electrode plate 10, a PTC heating element 11, a heat conducting block 12, a negative spring 13, a negative terminal 14, a diaphragm 15 and a heat conducting aluminum pipe 16; the one-way valve upper shell 1 and the one-way valve lower shell structure 3 are connected in a welding mode, the plug connector 6 and the heater assembly packaging structure 4 are connected in a welding mode, the plug connector 6 and the positive terminal 7 and the negative terminal 14 are connected in an insert injection molding process, and the heat conduction aluminum pipe 16 and the heater assembly packaging structure 4 are connected in an insert injection molding process; the diaphragm 15 is assembled between the check valve upper housing 1 and the check valve lower housing structure 3; the heater assembly 5 is characterized in that all components are assembled into the heater assembly packaging structure 4 in sequence by adopting an assembly process, a guide sleeve 9, an electrode plate 10 and a PTC heating element 11 are sequentially stacked on the surface of a heat conducting block 12, the electrode plate 10 and the PTC heating element 11 are assembled into a hole position corresponding to the guide sleeve 9, a positive electrode spring 8 and a negative electrode spring 13 are assembled into a hole position corresponding to the guide sleeve 9, one side of each positive electrode spring is respectively contacted with a positive electrode terminal 7 and a negative electrode terminal 14, and the other side of each positive electrode spring is respectively contacted with the electrode plate 10 and the heat conducting block 12.

The utility model discloses a working process:

after the plug 6 is powered on, current flows through the positive terminal 7, the positive spring 8, the electrode plate (10), the PTC heating element 11, the heat conducting block 12, the negative spring 13 and the negative terminal 14 in sequence to form a current closed loop with a power supply. When current flows through the PTC heating element 11, under the action of the current heat effect, the surface temperature of the PTC heating element 11 is rapidly raised in a short time, the generated heat is transferred to the heat-conducting aluminum pipe 16 through the heat-conducting block 12 and the heater assembly packaging structure 4 in a contact heat transfer and heat radiation mode, and the heat-conducting aluminum pipe 16 heats gas flowing through high-load crankcase ventilation gas in the length range of the heat-conducting aluminum pipe in a convection heat transfer and heat radiation mode, so that the gas temperature is raised. When the temperature of the PTC heating element 11 rises to a certain level, the resistance thereof increases sharply, so that the current circuit tends to be in an open state, the heating efficiency becomes extremely low, and the temperature of the PTC heating element does not rise any more.

Claims (1)

1. The utility model provides a crankcase is check valve integrated heater device for ventilation system which characterized in that: the heat-conducting tube comprises a one-way valve upper shell (1), an integrated shell (2), a one-way valve lower shell structure (3), a heater assembly packaging structure (4), a heater assembly (5), a plug connector (6), a positive terminal (7), a positive spring (8), a guide sleeve (9), an electrode plate (10), a PTC heating element (11), a heat-conducting block (12), a negative spring (13), a negative terminal (14), a diaphragm (15) and a heat-conducting aluminum tube (16); the upper shell (1) of the one-way valve is connected with the lower shell structure (3) of the one-way valve in a welding mode, the plug connector (6) is connected with the heater assembly packaging structure (4) in a welding mode, the plug connector (6) is connected with the positive terminal (7) and the negative terminal (14) through an insert injection molding process, and the heat conduction aluminum pipe (16) is connected with the heater assembly packaging structure (4) through the insert injection molding process; the diaphragm (15) is assembled between the one-way valve upper shell (1) and the one-way valve lower shell structure (3); the heater assembly (5) is characterized in that all components are assembled into a heater assembly packaging structure (4) in sequence by adopting an assembly process, a guide sleeve (9), an electrode plate (10) and a PTC heating element (11) are sequentially stacked on the surface of a heat conducting block (12), the electrode plate (10) and the PTC heating element (11) are assembled into a hole position corresponding to the guide sleeve (9), a positive spring (8) and a negative spring (13) are assembled into the hole position corresponding to the guide sleeve (9), one side of the positive spring is respectively contacted with a positive terminal (7) and a negative terminal (14), and the other side of the positive spring is respectively contacted with the electrode plate (10) and the heat conducting block (12).

Images