CN110761237A - Evaporation heating blanket - Google Patents

Abstract

The invention relates to the field of rail transportation, and discloses an evaporation thermal blanket, which has a bottom layer (10), an intermediate layer (20) and a top layer (30) sequentially distributed along the thickness direction, the intermediate layer (20) including a heating part (21) ), a heat conduction part (22) and a guide hole part (23), the guide hole part (23) runs through the intermediate layer (20) in the thickness direction, and the heat generating part (21) is distributed in the guide hole The heat conduction part (22) covers the heat generating part (21), so that the ice and snow covered by the evaporation blanket can be melted to form water vapor, and the formed water vapor can easily pass through the guide hole part. The ground is moved towards the top layer so that the water vapor can be discharged to the outside air through the evaporative thermal blanket.

Description

Evaporation blanket

technical field

The present invention relates to the field of rail transportation, in particular to an evaporative thermal blanket.

Background technique

With the progress of urbanization and the increase of population density, the problem of urban road congestion is becoming more and more serious. Urban rail transportation has become the main means to solve this problem. By definition, urban rail transportation refers to various public passenger transportation modes that operate in the form of trains along closed or partially closed dedicated tracks in the city and nearby areas. The general term for the subway system, the light rail system, the monorail system, the tram, etc.

The monorail system refers to a rail system that supports or suspends the carriage with a single rail beam and provides guidance. Among them, the track beam is not only the load-bearing structure of the vehicle, but also the guiding track for the vehicle to run. There are two main types of monorail systems, one is the way in which the vehicle straddles the track beam, which is called the straddle type monorail system; the other is the way of running on the track beam, which is called the suspension type. Monorail system.

Now, track beams are usually made of prestressed concrete, also known as PC beams, and some special sections can also be steel-structured track beams, or composite beams composed of several materials.

Since the straddle-type monorail runs on the track beam, the top surface of the track beam is used as the running surface, which is in direct contact with the running wheels of the lower part of the train vehicle supporting the car body, and the state of the running surface needs to be ensured. Especially in the low temperature environment in winter or in snowy weather, it is necessary to remove ice and snow from the walking surface.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the problem of the prior art that the running surface state of the track beam cannot be reliably ensured in low temperature areas, rainy and snowy areas, and to provide an evaporative thermal blanket, which can efficiently and reliably remove snow, and Ensure that there is no ice layer on the running surface of the track beam, prevent the running wheel from slipping and idling due to the ice layer, thereby reliably ensuring the safe operation of the monorail.

In order to achieve the above object, one aspect of the present invention provides an evaporation thermal blanket, which has a bottom layer, an intermediate layer and a top layer sequentially distributed along the thickness direction, the intermediate layer including a heating part, a heat conduction part and a guide hole part, the guide hole part The intermediate layer is penetrated in the thickness direction, the heat generating portion is distributed around the guide hole portion, and the heat conducting portion covers the heat generating portion.

Preferably, the guide hole portion includes a plurality of guide hole rows evenly distributed along the length direction of the thermal evaporation blanket, the guide hole row includes a plurality of guide holes evenly distributed along the width direction of the thermal evaporation blanket, and the heat generating portion It includes a first heating wire extending back and forth along the length direction, and a second heating wire extending back and forth along the width direction, and an insulating layer is arranged between the first heating wire and the second heating wire.

Preferably, the first heating wire is distributed between adjacent rows of the guide holes, and has a first positive terminal and a first negative terminal, and the second heating wire is distributed between the adjacent guide holes, and has a second positive terminal and a second negative terminal, the first negative terminal and the second positive terminal are connected.

Preferably, the top layer comprises a top layer main body part formed of a heat reflective material, and at least one guide hole distributed in the top layer main body part and penetrating the top layer main part, the guide hole communicates with the guide hole part .

Preferably, the top layer is a closed-cell foam plastic, and a plurality of guide holes are provided on the top layer, and the plurality of guide holes coincide with the guide hole portion.

Preferably, the bottom layer includes a bottom layer main body part, a plurality of rail beam setting parts provided on the bottom layer main body part, and a plurality of lead-out holes provided in the bottom layer main body part, the lead-out holes and the guide The holes are connected.

Preferably, the rail beam setting portion is an elongated magnetic strip, and the elongated magnetic strip extends along the length direction.

Preferably, the bottom layer is a waterproof and breathable membrane, and a plurality of lead-out holes are provided on the bottom layer, and the plurality of lead-out holes overlap with the guide hole portion.

Preferably, the bottom layer and the middle layer, and the middle layer and the top layer are all bonded by an adhesive layer.

Preferably, one end of the evaporative thermal blanket in the length direction is provided with a recovery joint portion, and the recovery joint portion can be releasably engaged on the roll in the evaporative thermal blanket winding device.

Through the above technical solution, the middle layer can melt the ice and snow covered by the evaporative thermal blanket to form water vapor, and the formed water vapor can easily move to the top layer through the guide hole portion, so that the water vapor can be discharged to the outside through the evaporative thermal blanket in the air.

Description of drawings

Fig. 1 is the bottom view (viewed from the bottom layer) of the evaporative thermal blanket of the present invention;

Fig. 2 is the structural representation of the evaporation thermal blanket of the present invention;

Fig. 3 is the sectional view of the evaporation thermal blanket of the present invention along the A-A position of Fig. 2;

Fig. 4 is the state schematic diagram when the evaporative thermal blanket of the present invention is laid on the track beam;

FIG. 5 is a schematic structural diagram of the evaporative thermal blanket winding device capable of winding the evaporative thermal blanket according to the present invention.

Description of reference numerals

1. Track beam; 2. Evaporation thermal blanket;

3. Cable; 4. Roller;

5. Frame;

10. The bottom layer; 11. The main body of the bottom layer;

12. Track beam setting part; 13. Export hole;

20. Middle layer; 21. Heating part;

22. Heat conduction part; 23. Guide hole part;

30. The top layer; 31. The main body of the top layer;

32. Cavity; 33. Guide hole.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

In the present invention, unless otherwise stated, the directional words used such as "upper, lower, left and right" generally refer to upper, lower, left and right with reference to the drawings. "Inside and outside" means inside and outside relative to the contour of the part itself. In addition, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

The present invention provides an evaporation thermal blanket, as shown in FIGS. 1-3 , having a bottom layer 10 , an intermediate layer 20 and a top layer 30 which are sequentially distributed along the thickness direction. The intermediate layer 20 includes a heat generating part 21 , a heat conducting part 22 and a guide hole part 23 , wherein the guide hole part 23 penetrates the intermediate layer 20 in the thickness direction, the heat generating part 21 is distributed around the guide hole part 23 , and the heat conducting part 22 covers the heat generating part 21 , the heating part 21 can melt the ice and snow covered by the evaporation thermal blanket through the heat conduction part 22 and the bottom layer 10 to form water vapor, and the formed water vapor can easily move to the top layer 30 through the guide hole part 23, so that the water vapor can easily pass through The evaporative thermal blanket is exhausted to the outside air. For the convenience of description, the surface of the portion of the snow and ice covered by the evaporative thermal blanket is hereinafter referred to as the "surface to be treated".

In other words, the present invention provides directional power for water vapor to evaporate and discharge outward by providing the heating part 21 and the guide hole part 23 in the middle layer 20 at the same time, and the directional power can effectively guide the water vapor from the vicinity of the bottom layer to the top layer for discharge, Thus, the humidity state of the surface to be treated can be changed reliably.

The evaporative thermal blanket of the present invention can not only melt the covered part of the ice and snow, but also can make the surface to be treated into a relatively dry state, so as to avoid the water vapor adhering to the walking surface from freezing again after the evacuation of the evaporative thermal blanket, so as to quickly Reliable maintenance of track beams.

Among them, it is preferable that the bottom layer 10 is a waterproof and heat-conductive layer formed of a material having properties of folding resistance, waterproofness and tensile strength. The waterproofness of the waterproof and heat-conducting layer mainly refers to the direction from the bottom layer to the top layer, which can prevent the water vapor generated by the ice and snow on the surface to be treated from entering the heating part 21 through the bottom layer 10, and passing through the guide hole part 23. A channel is exhausted to the outside air. In addition, the thermal conductivity of the waterproof and thermally conductive layer mainly refers to the direction from the top layer to the bottom layer, which can quickly transfer the heat generated by the heat generating part to the surface to be treated to melt and evaporate ice and snow.

The top layer 30 is a heat-insulating and air-permeable layer formed of a material with heat-insulating and air-permeable properties. The heat preservation performance of the heat preservation and ventilation layer mainly refers to the direction from the bottom layer to the top layer, which can prevent the heat generated by the heat generating part 21 from entering the outside air through the top layer 30 to a certain extent, so as to improve the thermal efficiency of the heat generating part. The air permeability of the thermal insulation and breathable layer mainly refers to the direction from the top layer to the bottom layer, which can discharge the water vapor passing through the middle layer 20 into the outside air as soon as possible.

The heating part 21 refers to a device that generates or produces a high temperature, and a device that uses electric energy to achieve a heating effect, such as resistance wire heating, is often used. The heat-conducting portion 22 covers the heat-generating portion 21 to uniformly release the heat energy generated by the heat-generating portion 21 to the surface to be treated. In addition, the guide hole portion 23 is opened in the heat transfer portion 22 where the heat generating portion 21 is not provided.

The guide hole portion 23 is a plurality of guide holes penetrating in the thickness direction, and can be arranged on the intermediate layer in various ways as long as it does not affect the heat generating portion 21 . As a preferred embodiment, as shown in FIG. 3 , the guide hole portion 23 includes a plurality of guide hole rows evenly distributed along the length direction, and the guide hole row includes a plurality of guide holes evenly distributed along the width direction. That is, by arranging the plurality of guide holes in a matrix shape uniformly arranged in the vertical and horizontal directions, the directional power is relatively uniform, thereby improving the processing efficiency of the surface to be processed.

In addition, the guide hole can be of various shapes, such as a rectangular hole, a triangular hole, etc., preferably a circular hole. The guide hole portion 22 penetrates the intermediate layer 20 in the thickness direction, which means that the axis of the guide hole (the extension direction of the guide hole) is substantially perpendicular to the bottom layer or the top layer, and can also be inclined at different angles, as long as one end of the guide hole is Contact with the bottom layer 10, and the other end can be in contact with the top layer.

In addition, all the guide holes in the guide hole portion 23 can also be inclined at the same angle, so as to facilitate the winding up of the evaporative thermal blanket.

In addition, when the heating part 21 is a resistance wire that uses electric energy to achieve heating effect, that is, the heating part 21 includes a first heating wire extending back and forth along the length direction, and a second heating wire extending back and forth along the width direction, the first heating wire and An insulating layer is arranged between the second heating wires.

Specifically, the first heating wire and the second heating wire are formed of nickel-chromium alloys with high resistivity, good plasticity, and easy to bend. In this case, the thermally conductive portion 22 is made of a rubber material with high elasticity and good insulating properties, and the rubber material is used as an insulating layer. The insulating layer separates the first heating wire, which carries lateral current, and the second heating wire, which carries longitudinal current. The heat-conducting portion 22 and the heat-generating portion 21 can be arranged in various ways. For example, the heat-conducting portion 22 can be three rubber sheets, and the first heating wire that transmits lateral current and the second heating wire that transmits longitudinal current are separated by rubber sheets. Insulation to avoid electrical connection at the intersection of the crisscrossed first heating wire and the second heating wire.

The first heating wire extends back and forth between the guide hole rows along the length direction, and can be extended back and forth between two or three rows of guide hole rows, so as to flexibly adjust the arrangement density of the resistance wires. Similarly, the second heating wire extends back and forth between the guide holes in the width direction, and can be extended back and forth between two or three rows of guide holes, so as to flexibly adjust the arrangement density of the resistance wires. In addition, a third heating wire extending back and forth in a 45-degree oblique direction can also be provided, so as to further adjust the arrangement density of the resistance wires.

As a preferred embodiment of the present invention, the first heating wire is distributed between adjacent rows of the guide holes and has a first positive terminal and a first negative terminal, and the second heating wire is distributed between the adjacent guide holes between, and has a second positive terminal and a second negative terminal. Through the above-mentioned reciprocating extension method, the first heating wire and the second heating wire are crossed into a lattice, and the heating wire is surrounded around each guide hole. That is, except for the guide hole row closest to the edge of the evaporation thermal blanket and the guide holes at both ends of the guide hole row, resistance wires are evenly distributed between every two adjacent guide holes, so as to improve the uniformity of heating and make the The directional power is more uniform and more efficient in handling snow and ice on the surface to be treated.

In addition, the first negative terminal of the first heating wire is electrically connected to the second positive terminal of the second heating wire, and the first heating wire and the second heating wire form a continuous heating wire, so that the heating part 21 has only one positive and negative electrodes. , which is convenient for connection with cables 3, etc. Specifically, the first negative terminal and the second positive terminal are connected at the ends of the evaporative thermal blanket.

FIG. 2 is a cross-sectional view of a specific embodiment of the thermal evaporation blanket according to the present invention. Since the size of the guide holes is relatively small compared to the overall size of the thermal evaporation blanket, FIG. 2 shows one guide hole and its surrounding parts. Schematic diagram of the structure.

As the top layer of the thermal insulation and breathable layer, preferably the top layer 30 includes a top layer body portion 31 formed of a heat reflective material, and at least one guide hole 33 is distributed through the top layer 30 , and the guide hole 33 communicates with the guide hole portion 23 . The top body portion 31 is a polyimide film or an aluminum foil.

As the top layer of the thermal insulation and breathable layer, it is also preferred that the top layer 30 includes a top layer body portion 31, at least one cavity 32 and at least one guide hole 33 penetrating the top layer 30 are distributed in the top layer body portion 31, and the bottom layer body portion 31 is disposed A plurality of guide holes 33 in the . Since air is enclosed in the cavity 32, and the still air in the small space has good thermal insulation performance, it can play a good thermal insulation effect. In addition, by providing the guide hole 33 communicating with the guide hole portion 23, the water vapor passing through the guide hole portion 23 can be led out to the outside air through the guide hole 33, which reduces the resistance of the water vapor to be discharged to the outside, that is, the directional power is further improved. .

Specifically, the top layer 30 is a sheet-like body processed by foam molding. According to the foam molding process, if most of the pores formed are connected to each other, it is called an open-cell foam. It can communicate with the guide hole portion 23 and function to lead out the water vapor to the outside air, so it is not necessary to open the guide hole 33 separately.

As a preferred embodiment of the present invention, the top layer 30 is a closed-cell foam plastic, and the top layer 30 is provided with a plurality of guide holes 33 corresponding to the guide hole portion 23 . The guide hole 33 can be formed by punching the lead-out hole 13 and the guide hole (guide hole portion 23 ) by a punching device after the layered body serving as the top layer 30 is bonded to the intermediate layer 20 and the bottom layer 10 . That is, the top body portion 31 is made of thermosetting and thermoplastic plastics such as polystyrene, polyurethane, polyvinyl chloride, polyethylene, urea formaldehyde, phenolic, and the like. The cavity 32 is formed in the main body portion 31 of the top layer by foam molding, and the guide holes 33 corresponding to the guide hole portions 23 are formed by mechanical punching. It is preferably a foamed polyethylene material having lightweight properties.

As shown in FIG. 2 , as the bottom layer of the waterproof and heat-conducting layer, it is preferable that the bottom layer 10 includes a bottom layer main body portion 11 , a plurality of rail beam setting portions 12 provided on the bottom layer main body portion 11 , and a plurality of lead-out portions provided in the bottom layer main body portion 11 . hole 13. As shown in the figure, since the main body portion 11 of the bottom layer is provided with the rail beam setting portion 12, the evaporation thermal blanket can be attached to the rail beam, thereby improving the heating evaporation efficiency. In addition, by providing the lead-out hole 13 communicating with the guide hole portion 23 , the water vapor melted and evaporated on the surface to be treated can be led out to the guide hole portion 23 , so that it can be quickly transferred to the outside air.

The rail beam setting portion 12 can have various structures, for example, as long as it can fit with the rail beam 1 , for example, the rail beam setting portion 12 can be made of a material with a relatively heavy specific gravity, and the positions of the provided edge portions can be The distance is greater than the width of the track beam 1, so that the edge can be hung on both sides of the track beam by gravity after laying in place, so that the evaporative thermal blanket 1 is attached to the surface to be treated, forming a state as shown in Figure 4 .

Preferably, the rail beam setting portion 12 is an elongated magnetic strip, and the elongated magnetic strips are distributed along the length direction, so that after the evaporation thermal blanket is laid in place, the magnetic force of the elongated magnetic strip can be used to attract and fasten the rail beam. And preferably, the distance between the positions of the set edge portions is greater than the width of the track beam 1 , and it is sucked and fastened with the side edge of the track beam. As described above, since the rail beam installation portion 12 is located on the side of the rail beam side after being installed, the heat generating portion 21 and the guide hole portion 23 can be laid over the entire width of the running surface of the rail beam 1, thereby reliably securing the rail The ice and snow on the walking surface of beam 1 are effectively treated to prevent residues at the edge of the walking surface.

In addition, the bottom layer 10 is a waterproof and breathable membrane. In the state of water vapor, the water particles in a small state can use the principle of capillary motion to smoothly penetrate into the capillary to the other side, thereby causing the phenomenon of vapor permeation. When the water vapor condenses into water droplets, the particles become larger. Due to the surface tension of the water droplets (the water molecules "pull and compete with each other"), the water molecules cannot smoothly escape from the water droplets and penetrate to the other side, which is to prevent the The penetration of water occurs, making the breathable membrane waterproof. In the present invention, EPTFE, namely polytetrafluoroethylene, is used, which has the characteristics of high tensile strength, high elasticity and elongation.

In addition, the plurality of lead-out holes 13 provided in the bottom layer 10 are preferably provided corresponding to the guide hole portions 23 . The lead-out hole 13 can be formed by punching the guide hole 33 and the guide hole (guide hole portion 23 ) by a hole punching device after the waterproof gas-permeable membrane as the bottom layer 10 is bonded to the intermediate layer 20 and the top layer 30 .

In addition, the bottom layer 10 and the middle layer 20 and the middle layer 20 and the top layer 30 are all bonded by the adhesive layer 40 . The adhesive layer 40 is preferably distributed over the entire contact surface of the intermediate layer 20 . In addition, it is preferable that one end of the thermal evaporation blanket in the longitudinal direction is provided with a recovery joint portion, and the recovery joint portion can be releasably engaged on the roll 4 in the evaporation thermal blanket winding device, so as to be picked up by the roll roll 4 Evaporate the end of the thermal blanket and roll it up.

As a specific implementation of the evaporative thermal blanket winding device, as shown in FIG. 5 , the running structure of the evaporative thermal blanket winding device is set on the frame 5, which is similar to the rail train, so that the evaporative thermal blanket winding device can Moving on the track beam 1, the winding rollers 4 are respectively arranged on both sides of the evaporative thermal blanket winding device, one side is used for winding and the other side is used for covering. Specifically, the frame 5 adopts a girder structure, so that it is capable of carrying more evaporative thermal blankets, and the evaporative thermal blankets used for rolling and covering are all located inside the device.

The dimensions in the width direction and the length direction of the evaporation thermal blanket according to the present invention can be set according to the diameter of the rail beam 1 and the roll 4 in the evaporation thermal blanket winding device, as well as the flexibility of the evaporation thermal blanket itself. The dimension in the thickness direction can be set according to the actual use environment temperature.

As a specific embodiment, the size of the evaporation thermal blanket can be 1 m in width, 500 m in length, and 3 mm in thickness, and the working temperature of the heating part 21 of the evaporation thermal blanket is 80°C. The bottom layer 10, the middle layer 20 and the top layer 30 can be formed with the same thickness, that is, 1 mm. In addition, the thickness of the middle layer is set according to the diameter of the heating wire, because the rubber used as the insulating layer needs to cover the entire heating wire, that is, the thickness of the middle layer needs to be larger than the diameter of the heating wire.

As mentioned above, the evaporative thermal blanket of the present invention has the characteristics of insulation, heat preservation, air permeability, light weight and the like. When there is ice and snow on the track beam, the heating part 21 is used to melt the ice and snow by covering the evaporative heating blanket, and the evaporated water vapor is discharged to the outside air through the hole through the guide hole part 23, and the weight itself is relatively light, which is conducive to the covering operation. .

Moreover, since the evaporative thermal blanket has a top layer 30 that can keep warm, it can prevent the heat generated by the heating part 21 from entering the outside air through the top layer 30 to a certain extent, compared with the way of heat blowing and heating pipes. Improve the thermal efficiency of the heat generating part and have good energy saving.

When the rail train is not in operation, the evaporative blanket winding device walks on the rail beam 1, lays the evaporation blanket 2 on the running surface of the rail beam 1, and is energized through the cable 3, so that the heating part 21 generates heat, and the heat is transferred to the On the track beam, the ice and snow on the upper surface of the track beam (the surface to be treated) melts, and the water vapor is emitted into the air through the evaporative thermal blanket. After the evaporative thermal blanket 2 of the present invention is used to cover the upper surface of the track beam for a period of time, not only the ice and snow can be melted, but also the water vapor can be led out through the evaporative thermal blanket, so that there will be no residue between the evaporative thermal blanket and the upper surface of the track beam. There is water vapor, etc., which can prevent secondary freezing.

When the rail train is in operation, the evaporative thermal blanket is retracted by the evaporative thermal blanket retracting device. At this time, since the ice and snow on the track beams are basically eliminated and relatively dry, even after the evaporative thermal blankets are removed, the evaporative thermal blankets on the track beams are still relatively dry. No ice formation on the surface will affect the normal operation of rail trains.

The preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and all belong to the protection scope of the present invention.

Claims (10)

1. An evaporative thermal blanket, characterized in that the evaporative thermal blanket has a bottom layer (10), an intermediate layer (20) and a top layer (30) sequentially distributed along the thickness direction, the intermediate layer (20) comprising a heating portion (21), a heat conduction part (22) and a guide hole part (23), the guide hole part (23) penetrates the intermediate layer (20) in the thickness direction, and the heat generating part (21) is distributed in the Around the guide hole portion (23), the heat conducting portion (22) covers the heat generating portion (21). 2 . The thermal evaporation blanket according to claim 1 , wherein the guide hole portion ( 23 ) comprises a plurality of guide hole rows evenly distributed along the length direction of the thermal evaporation blanket, and the guide hole row comprises Multiple guide holes evenly distributed in the width direction of the thermal blanket, The heating part (21) comprises a first heating wire extending reciprocally along the length direction, and a second heating wire extending reciprocally along the width direction, between the first heating wire and the second heating wire An insulating layer is provided. 3 . The evaporative thermal blanket according to claim 2 , wherein the first heating wire is distributed between the adjacent rows of the via holes, and has a first positive terminal and a first negative terminal, and the first heating wire has a first positive terminal and a first negative terminal. 4 . Two heating wires are distributed between the adjacent guide holes, and have a second positive terminal and a second negative terminal, The first negative terminal and the second positive terminal are connected. 4. The evaporation thermal blanket according to claim 2, characterized in that the top layer (30) comprises a top layer main body part (31) formed of a heat reflective material, and a top layer main body part (31) distributed in the top layer main part (31) At least one guide hole (33) penetrates through the top layer main body part (31), and the guide hole (33) communicates with the guide hole part (23). 5. The evaporative thermal blanket according to claim 2, characterized in that the top layer (30) is a closed-cell foam, and the top layer (30) is provided with a plurality of guide holes (33) for guiding the The hole (33) coincides with the guide hole portion (23). 6. The evaporation thermal blanket according to claim 2, wherein the bottom layer (10) comprises a bottom layer main body part (11), and a plurality of rail beam setting parts (11) are provided on the bottom layer main body part (11). 12), and a plurality of lead-out holes (13) provided in the bottom body portion (11), The lead-out hole (13) communicates with the guide hole portion (23). 7 . The thermal evaporation blanket according to claim 6 , wherein the rail beam setting portion ( 12 ) is an elongated magnetic strip, and the elongated magnetic strip extends along the length direction of the thermal evaporation blanket. 8 . 8 . The evaporative thermal blanket according to claim 2 , wherein the bottom layer ( 10 ) is a waterproof and breathable film, and the bottom layer ( 10 ) is provided with a plurality of lead-out holes ( 13 ), the plurality of lead-out holes (13) overlaps with the guide hole portion (23). 9. The evaporative thermal blanket according to any one of claims 1-8, characterized in that, between the bottom layer (10) and the middle layer (20), the middle layer (20) and the The top layers (30) are all bonded by an adhesive layer (40). 10. The evaporative thermal blanket according to any one of claims 1 to 8, wherein one end of the thermal evaporation blanket in the length direction is provided with a recovery joint portion, and the recovery joint portion can be releasably jointed on the evaporative thermal blanket. On the rolls in the evaporative blanket take-up unit.

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