CN213478457U - High-temperature radiation prevention device for sensor - Google Patents

Abstract

The utility model relates to an engine parts technical field especially relates to a high temperature radiation device is prevented to sensor, including separating the heat exchanger, separate the heat exchanger structure and be the sheet metal component structure, separate the heat exchanger including the bellied temperature sensor storehouse that makes progress and connect the mounting panel in temperature sensor storehouse below, temperature sensor sets up in the temperature sensor storehouse, is provided with first through-hole on the mounting panel, is provided with the second through-hole on the sensor mount pad, and first through-hole and second through-hole match. The problem that the thermal insulation method of blast pipe envelope brought among the current structure is solved, through install the heat exchanger that separates towards the blast pipe direction on the sensor, realize the high-temperature radiation of high-efficient low-cost sensor, prevent that the heat energy of blast pipe from radiating to the sensor, guarantee that the temperature of sensor periphery is within normal operating temperature, guarantee the safe and reliable operation of sensor.

Description

High-temperature radiation prevention device for sensor

Technical Field

The utility model relates to an engine parts technical field especially relates to a high temperature radiation device is prevented to sensor.

Background

In the existing automobile, an engine is developed towards electrification and electric control, and the use of a sensor is increased, but the use requirement of the sensor is strict on the surrounding environment, and the sensor can be failed due to overhigh temperature. According to the traditional sensor heat insulation method, heat energy is prevented from radiating to the sensor through the enveloping exhaust pipe, the heat is prevented from being transferred to the sensor through cladding and isolating the exhaust pipe which generates heat, the sensor is protected from high-temperature radiation, the ambient temperature of the sensor is in a reasonable range, and therefore the sensor is effectively protected.

For example, the natural gas engine exhaust pipe heat shield disclosed in chinese patent CN206707820U is arranged on the outer wall of the exhaust pipe body of the engine, and comprises an inner heat insulating layer and an outer coating layer, wherein the inner heat insulating layer wraps the outer wall of the exhaust pipe body, the inner heat insulating layer is a ceramic fiber layer, the outer coating layer wraps the outer part of the inner heat insulating layer, the outer coating layer is an embossed aluminum plate layer, the joint of the outer coating layer is connected by a rivet, and the outer surface of the outer coating layer is provided with a temperature sensor which is electrically connected with a temperature display. The utility model discloses in the engine working process, can effectively reduce the temperature in temperature field around the blast pipe to understanding directly perceivedly separates the temperature on heat exchanger surface, guarantee the normal safe work of engine and spare part on every side, simultaneously, guaranteed the holistic noise reduction effect of engine exhaust pipe heat exchanger, reduced the holistic weight of blast pipe heat exchanger, improved the antidetonation effect.

However, the structure is used for cladding and isolating the exhaust pipe which generates heat, so that heat is prevented from being transferred to the sensor, the scheme still has the defects that the structure is complex, a thicker cladding heat-insulating layer is required to be arranged outside the exhaust pipe, the cost is higher, the size is larger, the size of the engine can be increased, and the whole vehicle is not favorable for arranging the engine.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high temperature radiation device is prevented to sensor solves the problem that blast pipe envelope heat-proof method brought among the current structure, through on the sensor towards the blast pipe direction installation heat shield, realizes the high temperature radiation is prevented to the low-cost sensor of efficient, prevents that the heat energy of blast pipe from radiating to the sensor, guarantees that the peripheral temperature of sensor is within normal service temperature, guarantees the safe and reliable function of sensor.

The technical scheme of the utility model as follows: the utility model provides a high temperature radiation device is prevented to sensor, its setting is between temperature sensor and blast pipe, temperature sensor passes through the sensor mount pad and installs on engine body upper portion, the blast pipe sets up the temperature sensor top, including thermal-insulated cover, thermal-insulated cover structure is the sheet metal component structure, thermal-insulated cover is including the bellied temperature sensor storehouse that makes progress and connect the mounting panel in the outside of direction under the temperature sensor storehouse, temperature sensor sets up in the temperature sensor storehouse, be provided with first through-hole on the mounting panel, be provided with the second through-hole on the sensor mount pad, first through-hole with the second through-hole matches.

The utility model discloses an orientation exhaust pipe direction installation heat exchanger separates on the sensor, realizes the high temperature radiation is prevented to the low-cost sensor of efficient, prevents that the heat energy of blast pipe from radiating to the sensor, guarantees that the sensor is peripheral temperature within normal operating temperature, guarantees the safe and reliable's of sensor function. The plate structure of the sheet metal part with low cost is formed by simple bending processing, the structure is compact and random in assembly, and the manufacturing is simple, easy and low in cost. The whole vehicle is more compact in arrangement, the useful space of the vehicle is released, and meanwhile, the manufacturing cost is greatly reduced.

Preferably, the plane in which the mounting plate is located is arranged horizontally, so that the structure is simple, the mounting is convenient, and the cost is low.

Preferably, the mounting panels are arranged in pairs on two sides of the lower portion of the temperature sensor bin, a two-side connection mode is adopted, and the mounting is more stable and reliable.

Preferably, the first through hole and the second through hole extend to the outer side of the engine body and are arranged in a suspension mode, and heat dissipation below the sensor is facilitated.

Preferably, the clearance between the inner wall of the temperature sensor bin and the envelope line of the outer side of the temperature sensor is 2-5mm, the size can ensure the heat insulation distance of the temperature sensor, the temperature sensor is prevented from being in direct contact with a heat insulation cover, the size of the heat insulation cover is not too large, and the structure is compact.

Preferably, the first through hole and the second through hole are connected through bolts, the structure is simple, the disassembly and the later maintenance are convenient, and the cost is low.

Preferably, the temperature sensor bin is constructed in an inverted U-shaped groove structure, namely the temperature sensor bin is in an inverted long groove structure, and horizontal mounting plates are arranged on two sides below the temperature sensor bin, so that the transverse section of the whole heat shield is in a shape like a Chinese character 'ji'.

Preferably, the outer side edge of the mounting plate is provided with a chamfer, so that the size and the weight of the heat shield can be reduced, and the structure is more compact.

The utility model has the advantages that:

1. the traditional exhaust pipe wrapping method is cancelled, and the heat shield is arranged on the sensor towards the direction of the exhaust pipe, so that the whole vehicle is more compactly arranged, and the useful space of the vehicle is released.

2. The plate structure of the sheet metal part with low cost is formed by simple bending processing, and meanwhile, the manufacturing cost is greatly reduced.

3. The installation of the heat shield is realized by utilizing the installation hole of the sensor, the cost is low, the high-efficiency heat radiation prevention can be realized at will, the temperature around the sensor is ensured to be within the normal use temperature, and the safe and reliable operation of the sensor is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a high temperature radiation prevention device for a sensor according to the present invention.

Fig. 2 is a schematic structural view of the heat shield of the present invention.

Fig. 3 is an overall installation structure diagram of the high temperature radiation protection device of the present invention.

In the figure: 1-a temperature sensor, 2-an exhaust pipe, 3-a sensor mounting seat, 301-a second through hole, 4-an engine body, 5-a heat shield, 501-a temperature sensor cabin, 502-a mounting plate and 503-a first through hole.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments, which are illustrative of the invention and are not to be construed as unduly limiting the invention.

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply specific orientations that the device or structure indicated must have, be constructed in specific orientations, and operations, and therefore, should not be construed as limiting the present invention.

Example 1:

a sensor high-temperature radiation preventing device is provided between a temperature sensor 1 and an exhaust pipe 2, as shown in FIG. 3, the temperature sensor 1 is mounted on the upper part of an engine body 4 through a sensor mounting seat 3, the exhaust pipe 2 is provided above the temperature sensor 1,

as shown in fig. 1 and 2, the present embodiment includes a heat shield 5, the heat shield 5 is configured as a sheet metal component structure, the heat shield 5 includes a temperature sensor compartment 501 protruding upward and a mounting plate 502 connected to the outside below the temperature sensor compartment 501, the temperature sensor 1 is disposed in the temperature sensor compartment 501, a first through hole 503 is disposed on the mounting plate 502, a second through hole 301 is disposed on the sensor mounting base 3, and the first through hole 503 and the second through hole 301 are matched with each other.

In the embodiment, the heat shield 5 is mounted on the sensor mounting seat 3 by bolts passing through the first through hole 503 and the second through hole 301; when the engine journey is in operation, exhaust pipe 2 outwards radiates heat, including radiating heat to temperature sensor 1 on the engine body 4, separates heat exchanger 5 this moment to face temperature sensor 1 exhaust pipe 2 one side blocks the heat and the heat reflection, prevents that exhaust pipe 2's heat energy from radiating to temperature sensor 1, guarantees that the peripheral temperature of temperature sensor 1 is within normal use temperature, guarantees temperature sensor 1's safe and reliable's operation.

Example 2:

as shown in fig. 1 and fig. 2, a high temperature radiation device is prevented to sensor, its setting is between temperature sensor 1 and blast pipe 2, temperature sensor 1 installs on engine body 4 upper portion through sensor mount pad 3, blast pipe 2 sets up temperature sensor 1 top, including heat shield 5, heat shield 5 constructs for the sheet metal component structure, heat shield 5 includes bellied temperature sensor storehouse 501 that makes progress and connects the mounting panel 502 in the outside below the temperature sensor storehouse 501, temperature sensor 1 sets up in the temperature sensor storehouse 501, be provided with first through-hole 503 on the mounting panel 502, be provided with second through-hole 301 on the sensor mount pad 3, first through-hole 503 with second through-hole 301 phase-match.

As shown in fig. 1, in this embodiment, the plane where the mounting plate 502 is located is horizontally disposed, so that the structure is simple, the installation is convenient, and the cost is low.

As shown in fig. 1, in this embodiment, the mounting plates 502 are arranged in pairs at two sides below the temperature sensor bin 501, and the mounting is more stable and reliable by adopting a two-side connection manner.

As shown in fig. 1 and 2, in this embodiment, the first through hole 503 and the second through hole 301 both extend to the outside of the engine body 4 and are suspended, so as to facilitate heat dissipation below the sensor.

In this embodiment, the gap between the inner wall of the temperature sensor bin 501 and the envelope curve outside the temperature sensor 1 is 2mm, and this dimension mainly ensures that the volume of the heat shield 5 is not too large, the structure is compact, and meanwhile, the direct contact between the temperature sensor 1 and the heat shield 5 is avoided.

As shown in fig. 1, in this embodiment, the first through hole 503 and the second through hole 301 are connected by bolts, so that the structure is simple, the assembly and disassembly and the post-maintenance are convenient, and the cost is low.

In the present embodiment, as shown in fig. 2, the temperature sensor compartment 501 is configured as an inverted U-shaped groove structure, that is, the temperature sensor compartment 501 is an inverted long-groove structure, and the horizontal mounting plates 502 are added on two sides below the temperature sensor compartment 501, so that the transverse cross section of the whole heat shield 5 is in a shape like a Chinese character 'ji'.

As shown in fig. 2, in the present embodiment, the mounting plate 502 is provided with a chamfer on its outer side edge, that is, the width at the first through hole 503 is the largest, and the width at the edge is the smallest, so that the mounting strength can be ensured, the volume and weight of the heat shield 5 can be reduced, and the structure is more compact.

Example 3:

this embodiment is different from embodiment 2 described above in that: in this embodiment, the clearance between the inner wall of the temperature sensor bin 501 and the envelope curve outside the temperature sensor 1 is 5mm, and this size mainly ensures the thermal insulation distance of the temperature sensor 1, improves the thermal insulation performance, and is not too large in size. The number of the mounting plates 502 is 1, which is beneficial to reducing the cost.

Claims (8)

1. The utility model provides a sensor prevents high temperature radiation device, its setting is between temperature sensor (1) and blast pipe (2), temperature sensor (1) is installed on engine block (4) upper portion through sensor mount pad (3), blast pipe (2) set up temperature sensor (1) top, its characterized in that: including heat exchanger (5), heat exchanger (5) structure is the sheet metal component structure, heat exchanger (5) are including upwards bellied temperature sensor storehouse (501) and connection mounting panel (502) in temperature sensor storehouse (501) below orientation outside, temperature sensor (1) sets up in temperature sensor storehouse (501), be provided with first through-hole (503) on mounting panel (502), be provided with second through-hole (301) on sensor mount pad (3), first through-hole (503) with second through-hole (301) phase-match.

2. The sensor high-temperature radiation prevention device according to claim 1, characterized in that: the plane on which the mounting plate (502) is located is arranged horizontally.

3. The sensor high-temperature radiation prevention device according to claim 2, characterized in that: the mounting plates (502) are arranged on two sides below the temperature sensor bin (501) in pairs.

4. The sensor high-temperature radiation prevention device according to claim 1, characterized in that: the first through hole (503) and the second through hole (301) extend towards the outer side of the engine body (4) and are arranged in a suspended mode.

5. The sensor high-temperature radiation prevention device according to claim 1, characterized in that: the clearance between the inner wall of the temperature sensor bin (501) and the outer side of the envelope line of the outer side of the temperature sensor (1) is 2-5 mm.

6. The sensor high-temperature radiation prevention device according to claim 1, characterized in that: the first through hole (503) and the second through hole (301) are fixed by bolt connection.

7. The sensor high temperature radiation prevention device of claim 3, wherein: the temperature sensor cabin (501) is constructed into an inverted U-shaped groove structure.

8. The sensor high temperature radiation prevention device of claim 3, wherein: and a chamfer is arranged on the outer side edge of the mounting plate (502).

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