CN210302111U

CN210302111U - Fire-proof door

Info

Publication number: CN210302111U
Application number: CN201920790382.0U
Authority: CN
Inventors: 陆静华; 朱怀军; 黄世杰; 王骏
Original assignee: Shanghai Zirao Industrial Co ltd
Current assignee: Shanghai Zirao Industrial Co ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-14
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a fire door, including the door frame, door body and cooling structure, the door frame links to each other with its peripheral wall body is fixed, door body activity sets up in the door frame, cooling structure AND gate body coupling is embedded in the wall body of door frame one side, a body cools down when being used for taking place the condition of a fire, this technical scheme adopts the freon liquid as the coolant liquid through the coolant liquid incasement among the cooling structure like this, and at the first pump body, compressor and heat exchanger cooperation are used down, carry out rapid cooling to preventing fire door, the fire resistance and the practicality of preventing fire door have been improved, also strive for longer rescue time for the fire fighter, and can select the kind of coolant liquid according to the site environment condition, thereby confirm supporting cooling scheme, people's selectivity has been increased, it is actual more to laminate.

Description

Fire-proof door

Technical Field

The utility model relates to a fire protection device specifically is a prevent fire door.

Background

The fire door is an escape facility for protecting a fire passage from spreading fire for a certain time when a fire occurs.

The existing fireproof door with water circulation, such as structure 1 shown in fig. 2, this fireproof door is through installing the water circulation system in fireproof door, the circulation system supplies water through the water tank buried in the wall body, for fireproof door continuously cools down, improve its fire resistance, this kind of cooling structure is under the condition of stronger intensity of a fire, because the rapid heating up of the door body, the scene takes place to explode, fireproof door easily receives the air current and strikes and damages, its single cooling mode that utilizes the water circulation mode simultaneously, the effect is relatively poor and unable automatic cooling, be difficult to strive for sufficient time for the person who flees for life, therefore we make the improvement to this, propose a fireproof door.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides a fireproof door.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a fireproof door, including door frame, the door body and cooling structure, the door frame links to each other rather than the peripheral wall body is fixed, door body activity sets up in the door frame, cooling structure AND gate body coupling is embedded in the wall body of door frame one side for cool down to the door body when taking place the condition of a fire.

Preferably, the door body comprises a heat insulation layer, a cooling layer and a heat conduction layer, and a fixing groove for accommodating the cooling layer and the heat conduction layer is formed in the surface of the heat insulation layer;

one side of the cooling layer, which is close to the fixing groove, is elastically connected with the inner wall of the fixing groove through a buffer spring, and the other side of the cooling layer is provided with a positioning clamping groove used for being connected with the heat insulation layer;

one side of the heat conduction layer, which is close to the cooling layer, is provided with a positioning fixture block matched with the positioning fixture groove;

both ends of the groove wall of the fixing groove can be detachably provided with limit stop blocks for preventing the cooling layer and the heat conducting layer from being separated from the fixing groove.

Preferably, one side of the heat insulation layer is hinged with the door frame through a hinge, and a fireproof lock is arranged between the other side of the heat insulation layer and the door frame;

the cooling layer is embedded with S-shaped heat exchange tubes at one side close to the heat conducting layer, and two ends of each heat exchange tube are connected with the cooling structure;

the heat conducting layer is of a hollow structure, and a reinforcing rib is arranged in the hollow part of the heat conducting layer;

and a fireproof handle is arranged on the heat conduction layer on one side of the fireproof lock.

Preferably, the reinforcing ribs are arranged in a plurality of staggered manner in the hollow parts of the heat conduction layer, and ceramic fibers are filled in the hollow parts of the heat conduction layer between the adjacent reinforcing ribs.

Preferably, the cooling structure comprises a cooling liquid tank, a first pump body, a liquid inlet pipe and a liquid outlet pipe;

the cooling liquid tank is internally provided with cooling liquid, and the cooling liquid is set to be one of liquid water or liquid Freon;

a liquid injection valve is installed on the cooling liquid tank, and the liquid injection valve is a one-way valve;

the cooling liquid box is communicated with the heat exchange tube through a liquid inlet pipe and a liquid outlet pipe;

the first pump body is arranged in the cooling liquid tank and used for conveying cooling liquid in the cooling liquid tank.

Preferably, the cooling liquid is provided as liquid water.

Preferably, the liquid inlet end of the first pump body is communicated with the interior of the cooling liquid tank;

the liquid inlet end and the liquid outlet end of the liquid inlet pipe are respectively communicated with the liquid outlet end of the heat exchange pipe and the liquid inlet end of the cooling liquid tank;

and the liquid inlet end and the liquid outlet end of the liquid outlet pipe are respectively communicated with the liquid outlet end of the first pump body and the liquid inlet end of the heat exchange pipe.

Preferably, the cooling fluid is provided as liquid freon.

Preferably, the cooling structure further comprises a compressor and a heat exchanger which are sequentially arranged on the liquid inlet pipe along the length direction of the liquid inlet pipe;

the feed liquor pipe comprises first body an, second body b and third body c, the inlet end of first body a with give vent to anger the end and communicate with the inlet end of giving vent to anger end and the compressor of heat exchange tube respectively with the end of giving vent to anger of heat exchange tube mutually, the feed liquor end of second body b with go out the liquid end and communicate with the feed liquor end of compressor and heat exchanger mutually respectively with the liquid end, the feed liquor end and the play liquid end of third body c communicate with the feed liquor end of the play liquid end of heat exchange liquid case and the feed liquor end of coolant liquid case mutually respectively.

Preferably, the cooling structure further comprises a heat exchange liquid tank with heat exchange liquid inside, and a cold flow inlet and a hot flow outlet of the heat exchanger are respectively communicated with a liquid outlet end and a liquid inlet end of the heat exchange liquid tank through pipelines;

a second pump body is fixed in the heat exchange liquid tank, the liquid inlet end of the second pump body is communicated with the inside of the heat exchange liquid tank, and the liquid outlet end of the second pump body is communicated with the liquid outlet end of the heat exchange liquid tank through a pipeline;

the hydraulic valve is arranged on the heat exchange liquid tank and communicated with the external heat exchange liquid pipe, and the hydraulic valve is a one-way valve.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. adopt freon liquid as the coolant liquid through the coolant liquid incasement among the cooling structure to under first pump body, compressor and heat exchanger cooperation are used, carry out rapid cooling to preventing fire door, improved the fire resistance and the practicality of preventing fire door, also strived for longer rescue time for the fire fighter, and can select the kind of coolant liquid according to the site environment condition, thereby confirm supporting cooling scheme, increased people's selectivity, it is actual more to laminate.

2. The thermistor is adopted to replace a control switch of the pump body, so that automatic cooling of the fireproof door is realized, the process of manual control is reduced, and the fireproof door is cooled more timely and quickly.

3. Constitute by insulating layer, cooling layer and heat-conducting layer through the door body, buffer spring between cooling layer and the insulating layer can prevent to prevent that the external air current that prevents fire door and receive from strikeing and damaging, fixes through positioning fixture block, positioning slot between cooling layer and the heat-conducting layer simultaneously, makes to prevent that fire door is whole more stable, also convenient to install and dismantle.

Drawings

Fig. 1 is a schematic view of the structure 2 of the present invention;

fig. 2 is a schematic view of the structure 1 of the present invention;

FIG. 3 is a schematic side sectional view of the door body of the present invention;

FIG. 4 is a schematic structural view of the cooling layer and the heat conducting layer of the present invention;

FIG. 5 is a schematic view of the cooling structure of the present invention;

fig. 6 is a schematic diagram of the circuit flow structure of the present invention.

In the figure: 1. a door frame; 2. a door body; 3. a cooling structure; 4. a thermal insulation layer; 5. a cooling layer; 6. a heat conductive layer; 7. a buffer spring; 8. positioning the clamping groove; 9. positioning a fixture block; 10. a limit stop block; 11. a heat exchange pipe; 12. reinforcing ribs; 13. a fire-proof handle; 14. a fireproof lock; 15. a coolant tank; 16. a first pump body; 17. a liquid inlet pipe; 17a, a first pipe body; 17b, a second tube; 17c, a third tube; 18. a liquid injection valve; 19. a compressor; 20. a heat exchanger; 21. a heat exchange liquid tank; 22. a second pump body; 23. a hydraulic valve; 24. ceramic fibers; 25. a liquid outlet pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1:

please refer to fig. 1 and 2, which includes a door frame 1, a door body 2 and a cooling structure 3, wherein the door frame 1 is fixedly connected to the peripheral wall body, the door body 2 is movably disposed in the door frame 1, the cooling structure 3 is connected to the door body 2 and is embedded in the peripheral wall body for cooling the door body 2 when a fire occurs, and the door frame 1 and the door body 2 are both made of fireproof steel materials to increase the fire resistance of the fireproof door.

The working process is as follows: when a fire occurs, the cooling structure 3 embedded in the wall body continuously cools the door frame 1 and the door body 2, so that the fire resistance is improved, the deformation speed of the fireproof door is delayed when the fire occurs, and more escape time is strived for evacuees.

Example 2:

the present embodiment is a preferable scheme of embodiment 1, and referring to fig. 3 and 4, the door body 2 includes a heat insulation layer 4, a cooling layer 5, and a heat conduction layer 6, a fixing groove for accommodating the cooling layer 5 and the heat conduction layer 6 is formed on a surface of the heat insulation layer 4, and the heat insulation layer 4 is made of a heat insulation refractory material;

one side, close to the fixing groove, of the cooling layer 5 is elastically connected with the inner wall of the fixing groove through buffer springs 7, positioning clamping grooves 8 used for being connected with the heat insulation layer 4 are formed in the other side of the cooling layer 5, the number of the buffer springs 7 is multiple, the buffer springs are evenly distributed between the fixing groove and the cooling layer 5, the buffer springs 7 can play a role in buffering external airflow impact on the door body 2, the even distribution of the buffer springs 7 guarantees the overall balance of the door body 2 when the door body is impacted, and the positioning clamping grooves 8 are four and are distributed in four corners of the cooling layer 5 in a rectangular shape;

one side of the heat conduction layer 6 close to the cooling layer 5 is provided with positioning fixture blocks 9 matched with the positioning fixture grooves 8, and the number and the positions of the positioning fixture blocks 9 correspond to those of the positioning fixture grooves 8, so that the installation between the cooling layer 5 and the heat conduction layer 6 is more stable;

both ends of fixed slot cell wall all can be dismantled and be provided with limit stop 10 for prevent that cooling layer 5 and heat-conducting layer 6 from breaking away from the fixed slot, limit stop 10 can dismantle to set up and connect etc. for threaded connection or block, and this technical scheme does not do the restriction.

Example 3:

in this embodiment, referring to fig. 1, 2 and 4, one side of the heat insulating layer 4 is hinged to the door frame 1 through a hinge, so that the door body 2 can rotate around the hinge as an axis, and a fireproof lock 14 is disposed between the other side of the heat insulating layer 4 and the door frame 1 for normally locking and unlocking the door body 2;

the heat exchange tubes 11 distributed in an S shape are embedded in one side, close to the heat conducting layer 6, of the cooling layer 5, the heat exchange tubes 11 are in the S shape, so that the heating area between the heat exchange tubes 11 and the heat conducting layer 6 can be effectively increased, meanwhile, heat is transferred between tube bodies of the heat exchange tubes 11 and the heat conducting layer 6 through fin-shaped heat conducting fins, the heat conduction efficiency between the cooling layer 5 and the heat conducting layer 6 is further improved, and two ends of each heat exchange tube 11 are connected with the cooling structure 3;

the heat conduction layer 6 is of a hollow structure, reinforcing ribs 12 are arranged in the hollow part of the heat conduction layer 6, the reinforcing ribs 12 are arranged in the hollow part of the heat conduction layer 6 in a criss-cross mode, the reinforcing ribs 12 can improve the overall structural strength and stability of the heat conduction layer 6, ceramic fibers 24 are filled in the hollow part of the heat conduction layer 6 between the adjacent reinforcing ribs 12, and the ceramic fibers 24 can play a role in fire resistance and heat insulation;

the heat conducting layer 6 on one side of the fireproof lock 14 is provided with a fireproof handle 13, and the fireproof handle 13 can facilitate a user to open the door body 2 under normal conditions.

Example 4:

this embodiment is a preferred scheme of

embodiments

1, 2 and 3, please refer to fig. 1-4, in which the cooling structure 3 includes a cooling liquid tank 15, a first pump body 16, a liquid inlet pipe 17 and a liquid outlet pipe 25;

the cooling liquid tank 15 is internally provided with cooling liquid which is set to be one of liquid water or liquid Freon, and the cooling liquid is conveyed into the heat exchange tube 11 by the first pump body 16 to participate in heat exchange;

a liquid injection valve 18 is arranged on the cooling liquid tank 15, the liquid injection valve 18 is a one-way valve, and cooling liquid can be supplemented into the cooling liquid tank 15 through the liquid injection valve 18;

the cooling liquid box 15 is communicated with the heat exchange tube 11 through a liquid inlet pipe 17 and a liquid outlet pipe 25.

The first pump body 16 is arranged in the cooling liquid tank 15 and used for conveying cooling liquid in the cooling liquid tank 15, and the first pump body 16 is electrically connected with an external power supply through an external first pump body switch.

Example 5:

this embodiment is a preferable scheme of embodiment 4, please refer to fig. 2 and 4, and the cooling liquid is liquid water.

The liquid inlet end of the first pump body 16 is communicated with the interior of the cooling liquid tank 15;

the liquid inlet end and the liquid outlet end of the liquid inlet pipe 17 are respectively communicated with the liquid outlet end of the heat exchange pipe 11 and the liquid inlet end of the cooling liquid tank 15;

the liquid inlet end and the liquid outlet end of the liquid outlet pipe 25 are respectively communicated with the liquid outlet end of the first pump body 16 and the liquid inlet end of the heat exchange pipe 11.

The working process is as follows: when people observe the conflagration, 16 starts through the first pump body of external first pump body on-off control this moment, 16 first pump bodies carry the water in the coolant liquid case 15 to the heat exchange tube 11 on the cooling layer 5 in, simultaneously heat-conducting layer 6 carries out the heat transfer cooling through the surface that the fin conduction was given heat exchange tube 11 and with the water in the heat exchange tube 11 with the heat of accepting, water after the heat transfer gets back to in the coolant liquid case 15 and participates in next hydrologic cycle through feed liquor pipe 17, avoid preventing fire door's high temperature, strive for the rescue time for the fire fighter.

Example 6:

this embodiment is another preferred scheme of embodiment 4, please refer to fig. 1, fig. 4 and fig. 5:

the cooling liquid is set to be liquid freon which has a lower boiling point relative to water in physical characteristics and has a better heat absorption effect;

the cooling structure 3 further comprises a compressor 19 and a heat exchanger 20 which are sequentially arranged on the liquid inlet pipe 17 along the length direction of the liquid inlet pipe 17;

the liquid inlet pipe 17 is composed of a first pipe body 17a, a second pipe body 17b and a third pipe body 17c, wherein the gas inlet end and the gas outlet end of the first pipe body 17a are respectively communicated with the gas outlet end of the heat exchange pipe 11 and the gas inlet end of the compressor 19, the liquid inlet end and the liquid outlet end of the second pipe body 17b are respectively communicated with the liquid outlet end of the compressor 19 and the liquid inlet end of the heat exchanger 20, and the liquid inlet end and the liquid outlet end of the third pipe body 17c are respectively communicated with the liquid outlet end of the heat exchange liquid tank 21 and the liquid inlet end of the cooling liquid tank 15.

The cooling structure 3 further comprises a heat exchange liquid tank 21 with heat exchange liquid inside, and a cold flow inlet and a hot flow outlet of the heat exchanger 20 are respectively communicated with a liquid outlet end and a liquid inlet end of the heat exchange liquid tank 21 through pipelines;

the second pump body 22 is fixed in the heat exchange liquid tank 21, the liquid inlet end of the second pump body 22 is communicated with the inside of the heat exchange liquid tank 21, the liquid outlet end of the second pump body 22 is communicated with the liquid outlet end of the heat exchange liquid tank 21 through a pipeline, and the second pump body 22 can be electrically connected with an external power supply through an external second pump body switch, so that people can conveniently control the heat exchange liquid tank.

The hydraulic valve 23 is arranged on the heat exchange liquid tank 21, the hydraulic valve 23 is communicated with the external heat exchange liquid pipe, the hydraulic valve 23 is a one-way valve, when the liquid level in the heat exchange liquid tank 21 is low, the floating ball in the hydraulic valve 23 can be opened under the action of gravity, the heat exchange liquid tank 21 is communicated with the external heat exchange liquid pipe, sufficient heat exchange liquid is provided in the heat exchange liquid tank 21, when the heat exchange liquid in the heat exchange liquid tank 21 is gradually increased, the liquid level is gradually increased, and the floating ball in the hydraulic valve 23 is driven to float to close the hydraulic valve 23.

The working process is as follows: when a fire disaster occurs, people respectively control the first pump body 16 and the second pump body 22 to start through the first pump switch body and the second pump switch body which are externally connected, the first pump body 16 transmits the liquid freon in the cooling liquid tank 15 to the heat exchange tube 11 on the cooling layer 5, meanwhile, the heat conduction layer 6 conducts the received heat to the surface of the heat exchange tube 11 through the fins and carries out heat exchange and cooling with the liquid freon in the heat exchange tube 11, because the freon has lower boiling point, the heat exchange capability of the heat exchange tube 11 is effectively improved, the liquid freon absorbs heat and is converted into the gas freon, and enters the air inlet end of the compressor 19 through the first tube body 17a, and enters the heat exchanger 20 through the second tube body 17b after being compressed back to the liquid freon in the compressor 19, the second pump body 22 transmits the heat exchange liquid in the heat exchange liquid tank 21 to the heat exchanger 20 to carry out heat exchange with the liquid freon, make the temperature of liquid freon reduce, liquid freon after the cooling gets back to in coolant liquid case 15 and participates in next heat transfer circulation through third body 17c, and the technical scheme of this embodiment compares in embodiment 5's technical scheme to the cooling of preventing fire door more high-efficient, direct, has further striven for longer rescue time for the fire fighter.

Example 7:

in this embodiment, an improvement of

embodiments

5 and 6 is shown, referring to fig. 1, 4 and 6, the control of the first pump body 16 and the second pump body 22 can be automatically controlled by thermistors, that is, a plurality of thermistors are uniformly mounted on fins between the heat insulating layer 4 and the cooling layer 5, so that the thermistors replace a first pump body switch and a second pump body switch, the first pump body 16 and the second pump body 22 are both electrically connected with an external power source through the thermistors, and the thermistors are negative temperature coefficient thermistors, and the higher the temperature of the thermistors, the lower the resistance value of the negative temperature coefficient thermistors is, and the thermistors belong to semiconductor devices.

The working process is as follows: the worker sets a preset value of a temperature range for the negative temperature coefficient thermistor, when a fire disaster occurs, the heat conducting layer 6 conducts heat transmission through the fins, and when the negative temperature coefficient thermistor senses that the temperature on the fins exceeds the temperature range larger than the temperature range, the resistance is gradually reduced, so that the first pump body 16 and the second pump body 22 are communicated with an external power supply and start working, the process of manual control is reduced, and the fireproof door is cooled more timely and quickly.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. The utility model provides a fireproof door, its characterized in that includes door frame (1), the door body (2) and cooling structure (3), door frame (1) links to each other rather than the peripheral wall body is fixed, door body (2) activity sets up in door frame (1), cooling structure (3) are connected with the door body (2) and are buried in the peripheral wall body of door frame (1) for cool down door body (2) when taking place the condition of a fire.

2. The fireproof door according to claim 1, wherein the door body (2) comprises a heat insulation layer (4), a cooling layer (5) and a heat conduction layer (6), and fixing grooves for accommodating the cooling layer (5) and the heat conduction layer (6) are formed in the surface of the heat insulation layer (4);

one side, close to the fixing groove, of the cooling layer (5) is elastically connected with the inner wall of the fixing groove through a buffer spring (7), and a positioning clamping groove (8) used for being connected with the heat insulation layer (4) is formed in the other side of the cooling layer (5);

one side of the heat conduction layer (6) close to the cooling layer (5) is provided with a positioning clamping block (9) matched with the positioning clamping groove (8);

both ends of the groove wall of the fixing groove can be detachably provided with limit stop blocks (10) for preventing the cooling layer (5) and the heat conduction layer (6) from being separated from the fixing groove.

3. The fire door according to claim 2, characterized in that one side of the insulating layer (4) is hinged to the door frame (1) by a hinge and a fire lock (14) is provided between the other side of the insulating layer (4) and the door frame (1);

heat exchange tubes (11) distributed in an S shape are embedded in one side, close to the heat conducting layer (6), of the cooling layer (5), and two ends of each heat exchange tube (11) are connected with the cooling structure (3);

the heat conduction layer (6) is internally of a hollow structure, and a reinforcing rib (12) is arranged in the hollow part;

and a fireproof handle (13) is arranged on the heat conduction layer (6) on one side of the fireproof lock (14).

4. A fire door according to claim 3, characterised in that said reinforcing ribs (12) are arranged in a plurality and criss-cross in the hollow portion of said heat conductive layer (6), and ceramic fibres (24) are filled in the hollow portion of said heat conductive layer (6) between adjacent reinforcing ribs (12).

5. Fire door according to claim 3, characterized in that said cooling structure (3) comprises a cooling liquid tank (15), a first pump body (16), a liquid inlet duct (17) and a liquid outlet duct (25);

the cooling liquid tank (15) is internally provided with cooling liquid;

a liquid injection valve (18) is mounted on the cooling liquid tank (15), and the liquid injection valve (18) is a one-way valve;

the cooling liquid box (15) is communicated with the heat exchange tube (11) through a liquid inlet tube (17) and a liquid outlet tube (25);

the first pump body (16) is arranged in the cooling liquid tank (15) and is used for conveying cooling liquid in the cooling liquid tank (15).

6. The fire rated door as recited in claim 5, wherein the coolant is provided as liquid water.

7. A fire door according to claim 6, characterised in that the inlet end of said first pump (16) communicates with the interior of a coolant tank (15);

the liquid inlet end and the liquid outlet end of the liquid inlet pipe (17) are respectively communicated with the liquid outlet end of the heat exchange pipe (11) and the liquid inlet end of the cooling liquid tank (15);

and the liquid inlet end and the liquid outlet end of the liquid outlet pipe (25) are respectively communicated with the liquid outlet end of the first pump body (16) and the liquid inlet end of the heat exchange pipe (11).

8. The fire rated door as recited in claim 5, wherein said coolant is provided as liquid freon.

9. The fire door according to claim 8, characterised in that said cooling structure (3) further comprises a compressor (19) and a heat exchanger (20) arranged in succession on the inlet duct (17) along the length of the inlet duct (17);

feed liquor pipe (17) comprises first body (17 a), second body (17 b) and third body (17 c), the inlet end of first body (17 a) with give vent to anger the end and communicate with the inlet end of giving vent to anger end and compressor (19) of heat exchange tube (11) respectively, the feed liquor end and the play liquid end of second body (17 b) communicate with the feed liquor end of the play liquid end of compressor (19) and heat exchanger (20) respectively, the feed liquor end and the play liquid end of third body (17 c) communicate with the feed liquor end of the play liquid end of heat transfer liquid case (21) and coolant liquid case (15) respectively.

10. The fire door according to claim 9, characterized in that said cooling structure (3) further comprises a heat exchange fluid tank (21) with a heat exchange fluid inside, said cold fluid inlet and hot fluid outlet of said heat exchanger (20) being in communication with a liquid outlet and a liquid inlet of said heat exchange fluid tank (21) respectively through pipes;

a second pump body (22) is fixed in the heat exchange liquid tank (21), the liquid inlet end of the second pump body (22) is communicated with the inside of the heat exchange liquid tank (21), and the liquid outlet end of the second pump body (22) is communicated with the liquid outlet end of the heat exchange liquid tank (21) through a pipeline;

the heat exchange liquid tank (21) is provided with a hydraulic valve (23), the hydraulic valve (23) is communicated with an external heat exchange liquid pipe, and the hydraulic valve (23) is a one-way valve.