CN211574499U - Automatic temperature control electric heating urea pipe for vehicle - Google Patents

Abstract

The utility model provides an automatic temperature-controlled electric heating urea pipe for vehicles, which comprises a left plastic quick connector, a right plastic quick connector and an inner layer hose. A temperature control mechanism is installed on the left plastic quick connector, and the left plastic quick connector is installed with a temperature control mechanism. The inner layer hose is fixed at the right end, the right plastic quick connector is fixed at the right end of the inner layer hose, the annular side surface of the inner layer hose is closely attached to the electric heating wire, and the outer side of the electric heating wire is wrapped with a metal aluminum foil layer with heat conduction function, so The electric heating wire is led out by a wire and connected in series with the bimetal temperature control element of the temperature control mechanism. The annular side surface of the metal aluminum foil layer is wrapped with an insulating layer to prevent heat loss. Compared with the prior art, the insulating protective layer with waterproof and anti-friction functions has the following beneficial effects: preventing heat loss, having waterproof and anti-friction functions, realizing protection function and high functionality.

Description

A self-controlling temperature electric heating urea tube for vehicle

technical field

The invention relates to a vehicle self-controlling electric heating urea pipe, which belongs to the technical field of vehicle urea pipes.

Background technique

Diesel vehicles that meet the emission standards of China 4 and above use the selective catalytic reduction (SCR) exhaust after-treatment system to treat nitrogen oxides (NOx) to meet the requirements of environmental protection regulations. The main principle is to inject quantitatively into the exhaust processor. A standard concentration of urea solution is used to treat nitrogen oxides (NOx). This urea solution begins to freeze at -11°C, and when thawed, the urea solution returns to a normal solution state. Therefore, in cold weather conditions, the urea pipe must have a heating function. In order to prevent the pipeline from being damaged due to excessive heating, a product with automatic temperature control function is designed.

For this reason, the present invention adopts the following technical scheme: it includes an inner layer hose with urea corrosion resistance, and closely adheres to the electric heating wire on the outside, and the outer layer is a metal aluminum foil layer with a heat conduction function, which softens the inner layer. After the tube and the electric heating wire are tightly wound, the thermal insulation material layer is wrapped, and the outermost layer is an insulating protective layer with waterproof and anti-friction. Self-controlled temperature electric heating urea pipe for vehicle.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an electrically heated urea solution delivery hose with self-temperature control function which can be applied to automobiles.

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a vehicle self-controlled temperature electric heating urea pipe, comprising a left plastic quick connector, a right plastic quick connector and an inner layer hose, the left plastic quick connector A temperature control mechanism is installed on the top, the inner layer hose is fixed at the right end of the left plastic quick connector, the right plastic quick connector is fixed at the right end of the inner layer hose, and the annular side surface of the inner layer hose is tightly fitted with the electric heating wire. A metal aluminum foil layer with heat conduction function is wound on the outside, the electric heating wire is drawn out from the wire and connected in series with the bimetal temperature control element of the temperature control mechanism, and the inner hose and the electric heating wire are tightly connected by the metal aluminum foil layer. It is wound into one body, so that the heat generated by the electric heating wire is directly conducted into the inner hose, so that the liquid is thawed and melted by heat. It is combined with an insulating protective layer with waterproof and anti-friction functions.

Further, the material of the inner layer hose is selected from a nylon tube or a rubber tube resistant to urea corrosion. Specifically, the urea solution can be effectively prevented from being corroded, and the safety is good.

Further, the electric heating wire is made of a constant resistance heating conductor material, which can achieve a good heating effect.

Further, the electric heating wire is wound on the annular side surface of the inner-layer hose in a spiral state, specifically, to achieve a uniform heating effect.

Further, the electric heating wires are wound on the annular side surface of the inner-layer hose in a crossed state, specifically, to achieve a uniform heating effect.

Further, the left and right ends of the plastic spring are equidistantly fixed to four connecting plates, and through holes are formed on the four connecting plates, and the plastic spring is installed by using bolts, connecting plates and through holes.

Further, the temperature control mechanism includes a plug, a wire, a plastic pipe clamp, a contact insert rod, and a bimetal temperature control element, the contact insert rod is fixed on the lower end of the bimetal temperature control element, and the bimetal temperature control element is used for temperature control. The element is attached to the inner top of the plastic pipe clamp, the upper end of the bimetal temperature control element leads out the wire, the upper end of the wire is fixedly connected to the plug through the plastic pipe clamp, and the plastic pipe clamp is tightly attached to the left plastic quick connector right On the side of the ring, the contact insert rod and the bimetal temperature control element are installed in the left plastic quick connector, which realizes the quick disassembly and assembly of the bimetal temperature control element and facilitates maintenance and replacement.

Further, a plastic sleeve is fixed on the upper end of the plastic pipe clip, and the plastic sleeve is attached to the annular side surface of the wire. Specifically, the design of the plastic sleeve realizes the protection of the wire.

Further, a step groove is provided at the upper end of the right part of the left plastic quick connector, a jack is provided at the lower end of the step groove, the jack is opened inside the left plastic quick connector, and a socket is installed at the bottom end of the jack, so The insert sleeve is fixedly connected with the electric heating wire, the bimetal temperature control element is installed inside the stepped groove, and the lower end of the contact insert rod penetrates into the jack and extends into the insert sleeve. The bimetal temperature control element is buried in the left plastic quick connector to realize the protection function.

Further, a thermal insulation gasket is installed between the bimetal temperature control element and the plastic pipe clamp, and the thermal insulation gasket is bonded to the upper end of the bimetal temperature control element, and the thermal insulation gasket is installed inside the step groove and Extend to the upper end of the step groove, specifically, to ensure that the temperature received by the bimetal temperature control element is consistent with the temperature of the left plastic quick connector.

Further, the shell of the bimetal temperature control element is encapsulated by a metal with good thermal conductivity, specifically, the bimetal temperature control element can better sense the temperature.

Beneficial effects of the present invention:

1. In the present invention, the heat generated by the electric heating wire is directly conducted into the inner hose, so that the liquid is thawed and melted by heat, and the temperature is controlled by the bimetal temperature control element. friction function.

2. Removably connect the plastic pipe clamp and the left plastic quick connector with bolts, and fix the contact insert rod and the bimetal temperature control element into the left plastic quick connector to realize the quick disassembly and assembly of the bimetal temperature control element, which is convenient replace.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the front view of a kind of vehicle self-controlled temperature electric heating urea pipe of the present invention;

Fig. 2 is a cross-sectional view of a kind of vehicle self-controlled temperature electric heating urea pipe of the present invention;

Fig. 3 is a kind of electric heating wire embodiment diagram of a kind of vehicle self-controlled temperature electric heating urea pipe of the present invention;

Fig. 4 is a kind of electric heating wire embodiment diagram of a kind of vehicle self-controlling electric heating urea pipe of the present invention;

5 is a front view of a left plastic quick connector of a vehicle self-controlled temperature electric heating urea pipe of the present invention;

6 is a top view of the left plastic quick connector of a vehicle self-controlled temperature electric heating urea pipe of the present invention;

Fig. 7 is an enlarged view of part B in Fig. 5 of a vehicle self-controlled temperature electric heating urea pipe of the present invention;

8 is a front view of a temperature control mechanism for a vehicle self-controlling electric heating urea pipe of the present invention;

9 is a side view of a temperature control mechanism for a vehicle self-controlling electric heating urea pipe according to the present invention;

Figure 10 is a perspective view of a plastic pipe clamp for a vehicle self-controlled temperature electric heating urea pipe according to the present invention;

In the picture: 1-left plastic quick connector, 2-right plastic quick connector, 3-insulation protection layer, 4-temperature control mechanism, 5-metal aluminum foil layer, 6-electric heating wire, 7-inner hose, 8-insulation Layer, 11-step groove, 12-jack, 13-socket, 41-plug, 42-wire, 43-plastic pipe clamp, 44-contact rod, 45-bimetal temperature control element, 431-plastic sleeve cylinder.

Detailed ways

In order to make the technical means, creative features, achievement goals and effects realized by the present invention easy to understand, the present invention will be further described below with reference to the specific embodiments.

Please refer to FIG. 1 to FIG. 2, the present invention provides a technical solution: a self-controlled temperature electric heating urea pipe for vehicles, comprising a left plastic quick connector 1, a right plastic quick connector 2 and an inner hose 7, a left plastic quick connector The temperature control mechanism 4 is installed on the joint 1, the inner layer hose 7 is fixed on the right end of the left plastic quick connector 1, the right plastic quick connector 2 is fixed on the right end of the inner layer hose 7, and the annular side of the inner layer hose 7 is closely attached to the electric heating wire 6. The outer side of the heating wire 6 is wound with a metal aluminum foil layer 5 with a heat conduction function. The heating wire 6 is led out from the wire 42 and connected in series with the bimetal temperature control element 45 of the temperature control mechanism 4. The inner hose 7 and the heating wire 6 pass through the metal The aluminum foil layer 5 is tightly wound into one body, so that the heat generated by the electric heating wire 6 is directly conducted into the inner hose 7, so that the liquid is heated and thawed and melted. 8. The annular side surface closely fits the insulating protective layer 3 with waterproof and anti-friction functions.

As an embodiment of the present invention, the material of the inner layer hose 7 is a nylon tube or a rubber tube resistant to urea corrosion. Specifically, the urea solution is effectively prevented from being corroded, and the safety is good.

As an embodiment of the present invention, the heating wire 6 is made of a constant-resistance heating conductor material, specifically, a good heating effect can be achieved.

As an embodiment of the present invention: as shown in FIG. 3 , the electric heating wire 6 is wound on the annular side surface of the inner layer hose 7 in a spiral state, specifically, to achieve a uniform heating effect.

As an embodiment of the present invention: as shown in FIG. 4 , the heating wire 6 is wound on the annular side surface of the inner-layer hose 7 in a crossed state, specifically, to achieve a uniform heating effect.

As an embodiment of the present invention: as shown in FIG. 8 to FIG. 9 , the temperature control mechanism 4 includes a plug 41, a wire 42, a plastic pipe clamp 43, a contact insertion rod 44 and a bimetal temperature control element 45, and the contact insertion rod 44 Fixed on the lower end of the bimetal temperature control element 45, the bimetal temperature control element 45 is attached to the inner top of the plastic pipe clamp 43, the upper end of the bimetal temperature control element 45 leads out the wire 42, and the upper end of the wire 42 penetrates the plastic pipe clamp 43 and the plug 41 is fixedly connected, the plastic pipe clamp 43 is tightly fitted on the right annular side surface of the left plastic quick connector 1, and the contact insert rod 44 and the bimetal temperature control element 45 are installed in the left plastic quick connector 1. Specifically, by Bolts detachably connect the plastic pipe clamp 43 with the left plastic quick connector 1, and fix the contact insert rod 44 and the bimetal temperature control element 45 into the left plastic quick connector 1, so as to realize the quick disassembly of the bimetal temperature control element 45 Easy to maintain and replace.

As an embodiment of the present invention: as shown in FIG. 10 , a plastic sleeve 431 is fixed on the upper end of the plastic pipe clamp 43, and the plastic sleeve 431 is attached to the annular side surface of the wire 42. Specifically, the design of the plastic sleeve 431 realizes the 42 protection.

As an embodiment of the present invention: as shown in FIG. 5-FIG. 7, a stepped groove 11 is provided at the upper end of the right part of the left plastic quick connector 1, the lower end of the stepped groove 11 is provided with a jack 12, and the jack 12 is opened in the left plastic quick connector 1. Inside, the inner bottom end of the jack 12 is installed with the insert sleeve 13, the insert sleeve 13 is fixedly connected with the electric heating wire 6, the bimetal temperature control element 45 is installed inside the step groove 11, and the lower end of the contact insert rod 44 penetrates into the jack 12 and connects. Extend into the socket 13, specifically, insert the contact rod 44 into the socket 12, and detachably connect the socket 12 and the socket 13, at this time, the bimetal temperature control element 45 is located in the stepped groove 11 , the electric heating wire 6 and the bimetal temperature control element 45 are connected in series, so that the contact plug 44 and the bimetal temperature control element 45 are buried in the left plastic quick connector 1 to realize the protection function.

As an embodiment of the present invention, a thermal insulation gasket is installed between the bimetal temperature control element 45 and the plastic pipe clamp 43, and the thermal insulation gasket is bonded to the upper end of the bimetal temperature control element 45, and the thermal insulation gasket It is installed inside the stepped groove 11 and extends to the upper end of the stepped groove 11. Specifically, the thermal insulation gasket realizes the thermal insulation and sealing function of the bimetal temperature control element 45, so as to ensure that the bimetal temperature control element 45 receives the temperature and the left plastic quickly. The temperature of joint 1 is the same.

As an embodiment of the present invention, the shell of the bimetal temperature control element 45 is encapsulated by a metal with good thermal conductivity, specifically, the bimetal temperature control element 45 can better sense the temperature.

Working principle: Connect the left plastic quick connector 1 and the right plastic quick connector 2 with the relevant components, and then connect the plug 41 to the vehicle DC power connection or the electronic control unit of the SCR system. When the ambient temperature is lower than the temperature set by the control unit , the contact is closed, the circuit is turned on, the electric heating wire 6 starts to work, and the inner hose 7 is heated, which can prevent the urea solution from freezing. When the heating temperature reaches the set upper limit temperature, the bimetal element is heated and generates internal stress rapidly. Action, open the contact, cut off the circuit, so as to play the role of thermal protection, prevent the pipeline from being damaged by overheating, can well ensure the work of the SCR system in the low temperature environment and the flow of the urea solution in the pipeline, with corrosion resistance and low wear. The advantages are that it can be applied to vehicle requirements and is suitable for automotive applications.

The circuits, electronic components and modules involved are all in the prior art, which can be fully realized by those skilled in the art. It is needless to mention that the content of the present invention does not involve improvements to software and methods.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but without departing from the spirit or essential aspects of the present invention. In the case of the characteristic features, the present invention can be implemented in other specific forms. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the appended claims. All changes within the meaning and range of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. A self-controlled temperature electric heating urea pipe for vehicles, comprising a left plastic quick connector, a right plastic quick connector and an inner layer hose, it is characterized in that: a temperature control mechanism is installed on the left plastic quick connector, and the left plastic quick connector is The right end of the quick connector is fixed to the inner layer hose, the right end of the inner layer hose is fixed to the right plastic quick connector, the annular side surface of the inner layer hose is tightly fitted with the electric heating wire, and the outer side of the electric heating wire is wrapped with a metal aluminum foil layer with heat conduction function , the electric heating wire is drawn out from the wire and connected in series with the bimetal temperature control element of the temperature control mechanism, the inner hose and the electric heating wire are tightly wound into one through the metal aluminum foil layer, so that the The heat is directly conducted into the inner hose, so that the liquid is thawed and melted by heat. The annular side of the metal aluminum foil layer is wrapped with an insulating layer to prevent heat loss. Floor. 2. a kind of self-controlled temperature electric heating urea pipe for vehicle according to claim 1, it is characterized in that: described inner layer hose material selects nylon pipe or urea corrosion-resistant rubber pipe, specifically, effectively prevents urea solution Corrosion, good safety. 3. The self-controlled temperature electric heating urea tube for vehicles according to claim 1, wherein the electric heating wire is made of a constant resistance heating conductor material, and specifically, a good heating effect can be achieved. 4. The self-controlled temperature electric heating urea pipe for vehicles according to claim 1, wherein the electric heating wire is wound on the annular side surface of the inner hose in a spiral state, specifically, to achieve a uniform heating effect. 5 . The self-controlled temperature electric heating urea pipe for vehicles according to claim 1 , wherein the electric heating wire is wound on the annular side surface of the inner hose in a crossed state, specifically, to achieve a uniform heating effect. 6 . 6. The self-controlled temperature electric heating urea pipe for vehicles according to claim 1, wherein the temperature control mechanism comprises a plug, a wire, a plastic pipe clamp, a contact insertion rod and a bimetal temperature control element, The contact insertion rod is fixed on the lower end of the bimetal temperature control element, the bimetal temperature control element is attached to the inner top of the plastic pipe clamp, the upper end of the bimetal temperature control element leads out a wire, and the upper end of the wire penetrates the plastic The pipe clamp is fixedly connected with the plug, the plastic pipe clamp is tightly fitted on the right annular side surface of the left plastic quick connector, and the contact insert rod and the bimetal temperature control element are installed in the left plastic quick connector to realize dual The quick disassembly and assembly of the metal sheet temperature control element is convenient for maintenance and replacement. 7. The self-controlled temperature electric heating urea pipe for vehicles according to claim 6, wherein the plastic pipe clamp is fixed with a plastic sleeve at the upper end, and the plastic sleeve is fitted on the annular side surface of the wire, specifically Ground, the design of the plastic sleeve realizes the protection of the wire. 8 . The automatic temperature-controlled electric heating urea pipe for vehicles according to claim 6 , wherein a stepped groove is provided at the upper end of the right part of the left plastic quick connector, and a socket is provided at the lower end of the stepped groove. 9 . The jack is opened inside the left plastic quick connector, the bottom end of the jack is installed with a socket, the socket is fixedly connected with the electric heating wire, the bimetal temperature control element is installed inside the step groove, the contact plug The lower end of the rod penetrates into the jack and extends into the plug sleeve, specifically, the contact plug rod and the bimetallic sheet temperature control element are buried in the left plastic quick connector to achieve the protection function. 9 . The self-temperature-controlled electric heating urea pipe for vehicles according to claim 1 or 6, characterized in that: a thermal insulation gasket is installed between the bimetal temperature-controlling element and the plastic pipe clamp, and the thermal insulation The gasket is bonded to the upper end of the bimetal temperature control element, and the heat insulation gasket is installed inside the step groove and extends to the upper end of the step groove. Specifically, it is ensured that the receiving temperature of the bimetal temperature control element is consistent with the temperature of the left plastic quick connector . 10 . The self-controlled temperature electric heating urea tube for vehicles according to claim 6 , wherein the shell of the bimetal temperature-controlling element is encapsulated by a metal with good thermal conductivity. The temperature element can better sense the temperature.

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