CN114216259B

CN114216259B - Underground passage with dehumidification function

Info

Publication number: CN114216259B
Application number: CN202111368764.2A
Authority: CN
Inventors: 田利伟; 郭辉; 郭旭晖; 严鹏飞; 郝鑫鹏; 陈巍; 李晨光
Original assignee: China Railway Siyuan Survey and Design Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2023-04-25
Anticipated expiration: 2041-11-18
Also published as: CN114216259A

Abstract

The embodiment of the application provides an underground passage with a dehumidifying function, which comprises a passage body, a partition wall and a heat exchange piece. The channel body is provided with an inner space, and the partition wall is arranged in the inner space to divide the inner space into a main channel and an air channel, wherein the main channel and the air channel can be used for allowing hot air to pass through, and the main channel and the air channel are arranged at intervals in the transverse direction. The heat exchange piece is provided with an evaporation end and a condensation end, the condensation end is arranged in the wall body of the partition wall, the evaporation end is arranged in the air duct, and the evaporation end absorbs heat of hot air flow and transfers the heat to the condensation end for heat exchange. The underground passage provided by the embodiment of the application has a good dehumidification effect.

Description

Underground passage with dehumidification function

Technical Field

The invention relates to the technical field of dehumidification, in particular to an underground passage with a dehumidification function.

Background

With the rapid development of traffic industry, in complex traffic systems, such as high-speed rail stations, subway stations, etc., non-planar traffic channels, i.e. underground channels, are often penetrated. The underground passage connects the platform with the outside so that large-scale pedestrians can pass through quickly and safely.

However, the underground passage is generally wrapped by soil with lower temperature, the temperature of the underground passage is lower than the outside temperature, when the outside hot air contacts the underground passage, water vapor can condense to form water drops on the inner wall of the underground passage, so that the air in the underground passage is wet and slippery, bacteria are very easy to breed, the wet and slippery underground passage easily causes pedestrians to slip down while affecting the comfort level of a human body, and certain potential safety hazards exist.

Disclosure of Invention

In view of the foregoing, a primary object of the embodiments of the present application is to provide an underground passage with better dehumidification effect.

In order to achieve the above purpose, the technical solution of the embodiments of the present application is implemented as follows:

the embodiment of the application provides an underground passage with a dehumidifying function, which comprises:

a channel body having an interior space;

a partition wall disposed in the inner space to partition the inner space into a main passage disposed at a lateral interval and an air duct through which a heat-supplying air flow passes;

the heat exchange piece is provided with an evaporation end and a condensation end, the condensation end is arranged in the wall body of the partition wall, the evaporation end is arranged in the air duct, and the evaporation end absorbs heat of hot air flow and transfers the heat to the condensation end for heat exchange.

In one embodiment, the partition wall is provided with an air passage which is communicated with the air duct and the main channel.

In one embodiment, the underground passage further comprises a blower disposed in the air duct.

In one embodiment, the underground passage comprises at least two fans, and the two fans are respectively arranged at two opposite ends of the air duct along the extending direction.

In one embodiment, the underground passage further comprises a drainage ditch arranged in the air passage, and the drainage ditch is positioned on one side of the air passage away from the partition wall.

In one embodiment, the underground passage comprises a plurality of heat exchange pieces, and each heat exchange piece is arranged at intervals along the extending direction of the air duct.

In one embodiment, the heat exchange member is a heat pipe heat exchanger, the heat pipe heat exchanger is obliquely arranged, and the ground clearance of the evaporation end is lower than the ground clearance of the condensation end.

In one embodiment, the underground passageway further comprises a heater disposed at the evaporation end.

In one embodiment, the heat exchange member is disposed horizontally.

In one embodiment, the underground passage includes two partition walls, the two partition walls partition the internal space into the main passage and two air ducts arranged at intervals in the lateral direction, and the two air ducts are respectively arranged on two opposite sides of the main passage.

In one embodiment, the underground passage further comprises two air curtain machines, and the two air curtain machines are respectively arranged at two opposite ends of the main passage along the extending direction.

The embodiment of the application provides an underground passage with a dehumidifying function, which comprises a passage body, a partition wall and a heat exchange piece. The condensing end of the heat exchange piece is arranged in the wall body of the partition wall, the evaporating end is arranged in the air duct, and the evaporating end absorbs heat of hot air flow and transfers the heat to the condensing end for heat exchange. That is, after the evaporation end absorbs heat from the hot air flow, the condensation end transfers the absorbed heat into the partition wall to heat up the partition wall. Therefore, the temperature of the partition wall can be greatly improved, the wall surface temperatures of the two sides of the partition wall are high, the air in the air duct and the main channel cannot form water drops on the two side wall surfaces of the partition wall due to condensation, and the dehumidification effect of the underground channel can be improved.

Drawings

Fig. 1 is a front view of an underground passageway with dehumidifying function according to an embodiment of the present application;

fig. 2 is a top view of the subterranean passage of fig. 1.

Description of the reference numerals

A channel body 10; an internal space 10a; a main passage 10aa; an air duct 10ab; a partition wall 20; an air outlet 20a; a heat exchange member 30; an evaporation end 30a; a condensing end 30b; a blower 40; a drain 50; an air curtain 60.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as undue limitation to the present application.

In this application, a "lateral" orientation or positional relationship is based on the orientation or positional relationship shown in FIG. 1. It is to be understood that these directional terms are merely used to facilitate the description of the present application and to simplify the description, and are not intended to indicate or imply that the devices or elements referred to must have, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application.

The embodiment of the present application provides an underground passage with dehumidifying function, referring to fig. 1 and 2, including a passage body 10, a partition wall 20 and a heat exchanging member 30. Wherein the channel body 10 has an inner space 10a. A partition wall 20 is provided in the inner space 10a to partition the inner space 10a into a main passage 10aa and an air duct 10ab through which a flow of hot air can pass, which are arranged at intervals in a lateral direction. The heat exchange member 30 has an evaporation end 30a and a condensation end 30b, the condensation end 30b is disposed in the wall of the partition wall 20, the evaporation end 30a is disposed in the air duct 10ab, and the evaporation end 30a absorbs heat of the hot air flow and transfers the heat to the condensation end 30b for heat exchange.

Specifically, the hot air flow refers to an outdoor air flow having a relatively high temperature, the partition wall 20 is disposed in the channel body 10 and extends along the extending direction of the channel body 10, the evaporation end 30a of the heat exchanging member 30 is capable of exchanging heat with the hot air flow to absorb heat of the hot air flow, and after the absorbed heat is transferred to the condensation end 30b of the heat exchanging member 30, the condensation end 30b is capable of exchanging heat with the partition wall 20 to enable the partition wall 20 to absorb heat.

That is, after the evaporation end 30a absorbs heat from the hot air flow, the condensation end 30b transfers the absorbed heat into the partition 20 to heat up the partition 20. Therefore, the temperature of the partition wall 20 can be greatly increased, the wall surface temperatures of the two sides of the partition wall 20 are high, the air in the air duct 10ab and the main channel 10aa cannot be condensed on the two side wall surfaces of the partition wall 20 to form water drops, and the dehumidification effect of the underground channel can be improved.

In one embodiment, referring to fig. 1, the partition wall 20 has an air passage 20a communicating with the air duct 10ab and the main passage 10 aa.

Specifically, by providing the air passage 10ab and the main passage 10aa with the air passage 20a provided on the partition wall 20, the hot air flow in the air passage 10ab after heat absorption through the evaporation end 30a of the heat exchange member 30 can be caused to flow into the main passage 10aa through the air passage 20a. Thus, the temperature of the hot air flowing into the main passage 10aa is greatly reduced, and the temperature of the partition wall 20 is greatly increased, so that the ventilation performance of the underground passage can be greatly improved by introducing the outdoor air flow into the main passage 10aa on the premise that the wall of the partition wall 20 is not dewed.

In some embodiments, the partition wall 20 has a plurality of air vents 20a, and each air vent 20a is disposed at intervals along the extending direction of the partition wall.

In an embodiment, referring to fig. 1 and 2, the underground passage further includes a fan 40, and the fan 40 is disposed in the air duct 10ab, so as to guide the outdoor hot air flow into the air duct 10ab, and also speed up the airflow velocity in the air duct 10ab.

In one embodiment, the blower 40 is disposed near the top side of the air duct 10ab and the air port 20a is disposed near the bottom side of the air duct 10ab.

In one embodiment, referring to fig. 1 and 2, the underground passage includes at least two fans 40, and the two fans 40 are respectively disposed at opposite ends of the air duct 10ab along the extending direction.

It will be appreciated that two fans 40 are provided at the inlets at each end of the air duct 10ab to supply air into the air duct 10ab while promoting airflow within the air duct 10ab.

In some embodiments, when the channel is too long, fans 40 may be added in the air duct 10ab, and the fans 40 are arranged at equal intervals, so as to increase the airflow velocity.

In one embodiment, referring to fig. 1 and 2, the underground passageway further includes two air curtains 60, and the two air curtains 60 are disposed at opposite ends of the main passageway 10aa along the extending direction.

It can be appreciated that the air curtain machines 60 on two sides can form a 'invisible curtain' by generating strong air flow to divide the inside and outside of the underground passage into two independent areas, so as to prevent cold and hot air exchange inside and outside the underground passage, and prevent outdoor hot air flow from directly flowing in from two ends of the main passage 10aa and then condensing on two side wall surfaces of the main passage 10aa, so as to improve the dehumidification effect.

In one embodiment, referring to fig. 1 and 2, the underground passage further includes a drain 50 disposed in the air duct 10ab, the drain 50 being located on a side of the air duct 10ab remote from the partition wall 20.

Although the heat exchanging member 30 can transfer the heat in the hot air flow to the partition wall 20 by exchanging heat so as to heat the partition wall 20, the wall of the passage body 10 on the side of the air duct 10ab away from the partition wall 20 is not provided with the heat exchanging member 30, and the temperature thereof is lower than that of the hot air flow, and the water vapor in the hot air flow is condensed into water droplets on the side wall. Accordingly, the drain 50 is provided at a side of the air duct 10ab remote from the partition wall 20, so that condensed water is collected into the drain 50 and discharged out of the underground passage through the drain 50, thereby achieving dehumidification of hot air flow.

It will be appreciated that the drain 50 extends in the direction of extension of the tunnel 10ab. Thereby, water can be led out of the subterranean channel.

In one embodiment, the drain 50 is disposed closely to the lower corner line of the wall of the channel body 10, so that the condensed water on the wall can be directly collected into the drain 50 and then discharged along the extending direction of the drain 50.

In one embodiment, the subterranean passageway further includes a heater disposed at the evaporation end 30a.

It can be appreciated that the heater can heat the evaporation end 30a to increase the evaporation speed of the phase change medium in the evaporation end 30a and increase the heat exchange efficiency.

In one embodiment, referring to fig. 2, the underground passage includes a plurality of heat exchange members 30, and each heat exchange member 30 is disposed at intervals along the extending direction of the air duct 10ab. That is, the plurality of heat exchanging members 30 may be disposed in the air duct 10ab at equal intervals to improve heat exchanging efficiency, so that the partition wall 20 can be rapidly warmed up to improve dehumidifying effect.

In an embodiment, the heat exchange member 30 is a heat pipe heat exchanger, the heat pipe heat exchanger is disposed obliquely, and the ground height of the evaporation end 30a is lower than the ground height of the condensation end 30 b.

Specifically, the heat pipe heat exchanger can rapidly conduct heat by using a phase change process in which a medium is condensed at the condensing end 30b after being evaporated at the evaporating end 30a, i.e., by using the evaporation latent heat and the condensation latent heat of a liquid.

In addition, the heat pipe heat exchanger is disposed obliquely so that the condensing end 30b is higher than the evaporating end 30a. The evaporating end 30a is heated by the hot air in the air duct 10ab, so that the phase-change medium in the heat pipe heat exchanger is quickly vaporized, the vapor flows to the condensing end 30b through thermal diffusion, and is condensed at the condensing end 30b to release heat, and the liquid formed by condensation flows back to the evaporating end 30a under the action of gravity, so that the liquid is continuously circulated. It should be noted that this circulation is rapid, and heat can be continuously transferred from the evaporation end 30a to the condensation end 30b, and dissipated into the wall. Because the evaporation end 30a evaporates and absorbs heat, the temperature and humidity of hot air flow in the air duct 10ab are reduced, and hot air flow in the air duct 10ab enters the main channel 10aa through the air passing port 20a, so that the condensation problem in the underground channel can be effectively reduced or even eliminated, and the ground wet sliding is avoided. The condensing end 30b condenses and releases heat, so that the temperature of the partition wall 20 is increased, water vapor in the air is prevented from condensing to form water drops, and the humidity in the underground passage is reduced.

The heat pipe heat exchanger is used as a heat transfer element, fully utilizes the heat conduction principle and the rapid heat transfer property of the phase change medium, can transfer the heat in the hot air flow to the inside of the wall body of the partition wall 20 more rapidly, can accelerate the temperature rise of the partition wall 20 and dehumidifies the hot air flow.

In one embodiment, the heat exchange member 30 is disposed horizontally. When the heat exchange member 30 is horizontally disposed, the heat exchange efficiency of the heat exchange member 30 can be ensured by disposing the heater.

In one embodiment, referring to fig. 1 and 2, the underground passage includes two partition walls 20, the two partition walls 20 partition the internal space 10a into a main passage 10aa and two air ducts 10ab arranged at intervals in the lateral direction, and the two air ducts 10ab are respectively arranged at opposite sides of the main passage 10 aa.

It should be noted that, the two partition walls 20 may enable the two sides of the main channel 10aa to be provided with one air duct 10ab, and the dehumidification effect of the underground channel may be enhanced by heating the partition walls 20 on the two sides.

Illustratively, the two partition walls 20 of the underground passage are provided with heat exchange members 30 and air outlets 20a, the ends of the two air channels 10ab are provided with a fan 40, and the sides of the two air channels 10ab away from the corresponding partition walls 20 are provided with drainage ditches 50.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An underground passage with dehumidifying function, comprising:

a channel body having an interior space;

a partition wall disposed in the inner space to partition the inner space into a main passage disposed at a lateral interval and an air duct through which an outdoor hot air flow passes, the partition wall having an air passing port communicating the air duct and the main passage;

the heat exchange piece, the heat exchange piece has evaporating end and condensation end, the condensation end sets up in the wall body of partition wall, the evaporating end sets up in the wind channel, the evaporating end absorbs the heat of hot air current, and with heat transfer extremely the condensation end in order to carry out the heat transfer with the partition wall, the heat exchange piece is the heat pipe heat exchanger.

2. The underground passageway of claim 1, further comprising a blower disposed in the air tunnel.

3. The underground passageway of claim 2, wherein the underground passageway comprises at least two fans, the two fans being disposed at opposite ends of the air duct in the direction of extension, respectively.

4. The underground passageway of claim 1, further comprising a drain disposed within the tunnel, the drain being located on a side of the tunnel remote from the partition wall.

5. The underground passageway of claim 1, wherein the underground passageway comprises a plurality of heat exchange members, each of the heat exchange members being spaced apart along the direction of extension of the air tunnel.

6. The underground passageway of claim 1, wherein the heat pipe heat exchanger is disposed at an incline and the evaporation end has a lower elevation above the ground than the condensation end.

7. The underground passageway of claim 1, further comprising a heater disposed at the evaporation end.

8. The underground passageway of claim 7, wherein the heat exchange member is horizontally disposed.

9. The underground passageway according to any one of claims 1 to 8, wherein the underground passageway includes two partition walls that partition the interior space into the main passageway and two air ducts that are disposed at a lateral interval, the two air ducts being disposed on opposite sides of the main passageway, respectively.

10. The underground passageway of claim 1, further comprising two air curtain machines disposed at opposite ends of the main passageway in the direction of extension, respectively.