CN113864850A

CN113864850A - Phase-change heat-storage anti-overheating floor radiation device

Info

Publication number: CN113864850A
Application number: CN202111303308.XA
Authority: CN
Inventors: 刘泛函; 张叶; 谷志攀; 江海斌
Original assignee: Jiaxing University
Current assignee: Jiaxing University
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2021-12-31

Abstract

The invention discloses a phase-change heat storage anti-overheating floor radiation device, which comprises a radiation heating mechanism and a heat source mechanism which are communicated with each other; the radiation heating mechanism is arranged on the indoor ground and comprises a bottom layer, a heating layer, a heat conduction layer and a top layer which are sequentially arranged from bottom to top; the heating layer comprises a shell, and the upper end surface and the lower end surface of the shell are fixedly connected with the top surface of the bottom layer and the bottom surface of the heat conducting layer respectively; a first phase-change material is filled in the shell, and a heating pipe is arranged in the first phase-change material; the heat source mechanism comprises a heat source component and a heat storage tank, and the heat source component is communicated with the heat storage tank; the heat storage tank is communicated with the heating pipe. The phase-change material has a simple structure, fully utilizes the heat storage capacity of the phase-change material, effectively stores redundant heat, prevents the discomfort of inhabitants caused by overlarge indoor temperature fluctuation range, improves the comfort of the inhabitants, reduces the heat loss by the phase-change material, improves the utilization rate of the heat, reduces the energy consumption, and improves the economy and the environmental protection.

Description

Phase-change heat-storage anti-overheating floor radiation device

Technical Field

The invention relates to the technical field of heating devices, in particular to a phase-change heat-storage anti-overheating floor radiation device.

Background

The floor radiation heating is a heating mode that hot water with the temperature not higher than 60 ℃ is used as a heat source and circularly flows in a coil system embedded under the floor to heat the whole floor and uniformly radiate and radiate heat indoors through the ground. Compared with the traditional heating, the floor radiation heating has incomparable advantages, has the advantages of comfort, high efficiency, energy conservation, low operation cost, environmental protection, sanitation, health care, long service life, maintenance free, good safety performance, maintenance cost saving and the like, and is not only widely used for public buildings such as civil houses, various medical institutions, swimming houses, gymnasiums, shopping malls, office buildings and the like, but also widely used for heat preservation of building systems such as factory buildings, hangars, flower beds, football fields, vegetable greenhouses and the like, and even used for heat preservation of outdoor roads, roofs, stairs, airport runways, snow melting and various industrial pipelines.

Most of the existing floor heating systems adopt a floor heating coil to directly supply heat, the heat emission cannot be adjusted, once the temperature of a heat supply source changes, the indoor temperature can directly change along with a heat supply pipe, and residents feel that the room temperature is suddenly cold and hot; especially, when adopting solar heating system, because solar energy has discontinuity, the noon sunshine is sufficient, and does not have sunshine night, leads to it to have the too big problem of indoor difference in temperature, and the comfort level is poor. Meanwhile, as the heat storage device cannot store redundant heat, a user can only discharge the redundant heat by adopting modes such as windowing and the like, thereby causing resource waste.

Disclosure of Invention

The invention aims to provide a phase-change heat-storage anti-overheating floor radiation device to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a phase-change heat-storage anti-overheating floor radiation device, which comprises

The radiant heating mechanism is arranged on the indoor ground and used for heating the indoor space; the radiation heating mechanism comprises a bottom layer, a heating layer, a heat conduction layer and a top layer which are sequentially arranged from bottom to top; the heating layer comprises a shell, and the upper end surface and the lower end surface of the shell are fixedly connected with the top surface of the bottom layer and the bottom surface of the heat conducting layer respectively; a first phase-change material is filled in the shell, a heating pipe is arranged in the first phase-change material, and the heating pipe is wrapped by the first phase-change material;

the heat source mechanism is used for providing heat energy for the radiation heating mechanism and is communicated with the heating pipe; the heat source mechanism comprises a heat source component and a heat storage tank, and the heat source component is communicated with the heat storage tank; the heat storage tank is communicated with the heating pipe.

Preferably, the heat conducting layer comprises heat conducting plates arranged in parallel, the heat conducting plate at the upper end is fixedly connected with the bottom surface of the top layer, and the heat conducting plate at the bottom end is fixedly connected with the top surface of the shell; a plurality of support columns and a plurality of heat conduction columns are arranged between the two heat conduction plates; the top end of the heat conduction column penetrates through the heat conduction plate at the upper end and extends into the top layer, and the bottom end of the heat conduction column penetrates through the heat conduction plate at the lower end and the top end of the shell and extends into the first phase-change material.

Preferably, the heat conducting column comprises an upper guide column and a lower guide column which are abutted; the top end of the upper guide pillar extends into the top layer, and the bottom end of the lower guide pillar extends into the first phase change material; the upper guide pillar is a solid metal guide pillar, the lower guide pillar is a hollow metal guide pillar, and a second phase change material is filled in the hollow of the lower guide pillar; and a temperature control assembly is arranged between the upper guide pillar and the lower guide pillar.

Preferably, the temperature control assembly comprises a sliding sheet which is slidably connected in the hollow of the lower guide pillar, and the bottom end of the sliding sheet is abutted with the second phase change material; the top end of the sliding sheet is fixedly connected with a connecting plate through a connecting rod, the top surface of the connecting plate is fixedly connected with a heat conducting block, and the heat conducting block is in sliding connection with the abdicating groove on the bottom surface of the upper guide pillar; and a plurality of reset springs are connected between the top surface of the sliding sheet and the top surface of the lower guide post.

Preferably, the bottom layer comprises a structural layer, a heat insulation layer, a reflection layer and a fixing net which are fixedly connected from bottom to top in sequence, and the top surface of the fixing net is fixedly connected with the bottom surface of the shell and used for fixing the shell; the structural layer is an indoor ground or a prefabricated floor layer.

Preferably, the top layer comprises a leveling layer, the bottom surface of the leveling layer is fixedly connected with the heat conducting plate at the top end, and the top surface of the upper guide pillar extends into the leveling layer; the top surface of the leveling layer is fixedly connected with a floor layer.

Preferably, the heat source assembly comprises a heat source device, the heat source device is communicated with the heat storage tank through a heat source pipe, and a first circulating pump is communicated with the heat source pipe; the two ends of the first circulating pump are respectively communicated with first electromagnetic valves, and the first electromagnetic valves are electrically connected with the first circulating pump.

Preferably, the heat storage tank comprises a tank body, and two opposite side surfaces of the tank body are respectively provided with a heat source inlet, a heat source outlet, a heating inlet and a heating outlet; the heat source inlet and the heat source outlet are respectively communicated with the heat source pipe; the heating inlet and the heating outlet are respectively communicated with the heating pipe; a first connecting pipe is connected between the heat source inlet and the heat source outlet, and a second connecting pipe is connected between the heating inlet and the heating outlet; and a third phase change material is filled in the box body.

Preferably, the first connecting pipe comprises two first main pipes arranged in parallel, the two first main pipes are respectively communicated with the heat source inlet and the heat source outlet, and a plurality of first branch pipes are communicated between the two first main pipes; the position where the heat source inlet is communicated with the first main pipe is lower than the heat source outlet; the second connecting pipe comprises two second main pipes which are arranged in parallel, the two second main pipes are respectively communicated with the heating inlet and the heating outlet, and a plurality of second branch pipes are communicated between the two second main pipes; the position of the communication between the heating inlet and the second branch pipe is lower than the heating outlet.

Preferably, the first phase change material is a solid-liquid phase change material; the second phase change material is a gas-liquid phase change material; the third phase change material is a solid-liquid phase change material.

The invention discloses the following technical effects: the invention discloses a phase-change heat storage overheating-prevention floor radiation device, which transfers heat to a heat storage tank through a heat source component, a third phase-change material in the heat storage tank stores the heat and transfers the heat to a radiation heating mechanism through a heating pipe to provide heating for a room, the third phase-change material stores the heat of the heat source component, the heat is conveniently supplied in the intermittent period of the work of the heat source component, the utilization rate of the heat and the continuity of the heating are improved on the premise of reducing energy consumption, and the change of the indoor temperature is prevented from being overlarge; the heating pipe is wrapped in the first phase-change material, heat is transferred to the heat conduction layer after passing through the first phase-change material, the heat conduction layer radiates the heat out of the top layer to supply heat indoors, the first phase-change material can store redundant heat, and the continuity of indoor heating is guaranteed; heat is supplied from the indoor bottom end and moves upwards, so that the overall balance of indoor temperature is ensured. The phase-change material has a simple structure, fully utilizes the heat storage capacity of the phase-change material, effectively stores redundant heat, prevents the discomfort of inhabitants caused by overlarge indoor temperature fluctuation range, improves the comfort of the inhabitants, reduces the heat loss by the phase-change material, improves the utilization rate of the heat, reduces the energy consumption, and improves the economy and the environmental protection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a phase-change heat-storage anti-overheating floor radiation device according to the present invention;

FIG. 2 is a schematic view of a heat storage tank according to the present invention;

FIG. 3 is a unit view of a first connection pipe and a second connection pipe according to the present invention;

FIG. 4 is a schematic view of the structure of the radiant heating mechanism of the present invention;

FIG. 5 is a partial method diagram of A in FIG. 4;

FIG. 6 is a partial method diagram of B of FIG. 4;

wherein, 1, a bottom layer; 2. a heating layer; 3. a heat conductive layer; 4. a top layer; 5. a heat source assembly; 6. a heat storage tank; 11. a structural layer; 12. a thermal insulation layer; 13. a reflective layer; 14. fixing the net; 21. a housing; 22. a first phase change material; 23. heating a tube; 24. a second circulation pump; 25. a second solenoid valve; 31. a heat conducting plate; 32. a support pillar; 33. a heat-conducting column; 331. an upper guide post; 332. a lower guide post; 333. a second phase change material; 334. a slide sheet; 335. a connecting rod; 336. a connecting plate; 337. a heat conducting block; 338. a yielding groove; 339. a return spring; 41. leveling layer; 42. a floor layer; 51. a heat source device; 52. a heat source tube; 53. a first circulation pump; 54. a first solenoid valve; 61. a box body; 62. a heat source inlet; 63. a heat source outlet; 64. heating the inlet; 65. a heating outlet; 66. a first connecting pipe; 67. a second connecting pipe; 68. a third phase change material; 661. a first main tube; 662. a first branch pipe; 671. a second main pipe; 672. a second branch pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1 to 6, the present invention provides a phase change heat storage overheating prevention floor radiation device, including

The radiant heating mechanism is arranged on the indoor ground and used for heating the indoor space; the radiation heating mechanism comprises a bottom layer 1, a heating layer 2, a heat conduction layer 3 and a top layer 4 which are sequentially arranged from bottom to top; the heating layer 2 comprises a shell 21, and the upper end surface and the lower end surface of the shell 21 are fixedly connected with the top surface of the bottom layer 1 and the bottom surface of the heat conduction layer 3 respectively; a first phase-change material 22 is filled in the shell 21, a heating pipe 23 is arranged in the first phase-change material 22, and the heating pipe 23 is wrapped by the first phase-change material 22;

the heat source mechanism is used for providing heat energy for the radiation heating mechanism and is communicated with the heating pipe 23; the heat source mechanism comprises a heat source component 5 and a heat storage tank 6, and the heat source component 5 is communicated with the heat storage tank 6; the heat storage tank 6 communicates with the heating pipe 23.

According to the invention, heat is transferred to the heat storage tank 6 through the heat source component 5, the third phase change material 68 in the heat storage tank 6 stores the heat, the heat is transferred to the radiation heating mechanism through the heating pipe 23 to provide heating for the indoor, the third phase change material 68 stores the heat of the heat source component 5, so that the heating is conveniently performed in the intermittent period of the work of the heat source component 5, the utilization rate of the heat and the continuity of the heating are improved on the premise of reducing the energy consumption, and the change of the indoor temperature is prevented from being overlarge; the heating pipe 23 is wrapped in the first phase-change material 22, heat is transferred to the heat conduction layer 3 after passing through the first phase-change material 22, the heat conduction layer 3 radiates the heat out of the top layer 4 to supply heat indoors, and the first phase-change material 22 can store redundant heat to ensure the continuity of indoor heating; heat is supplied from the indoor bottom end and moves upwards, so that the overall balance of indoor temperature is ensured.

Further, the first phase change material 22 changes from a solid state to a liquid state when the temperature of the heating pipe 23 is too high, stores heat, and is used for supplying heat when the temperature of the heating pipe 23 is low, thereby ensuring uniformity of heat output from the heating layer 2.

In a further optimized scheme, the heat conducting layer 3 comprises heat conducting plates 31 which are arranged in parallel, the heat conducting plate 31 at the upper end is fixedly connected with the bottom surface of the top layer 4, and the heat conducting plate 31 at the bottom end is fixedly connected with the top surface of the shell 21; a plurality of support columns 32 and a plurality of heat conduction columns 33 are arranged between the two heat conduction plates 31; the top end of the heat conducting column 33 penetrates through the heat conducting plate 31 at the upper end and extends into the top layer 4, and the bottom end of the heat conducting column 33 penetrates through the heat conducting plate 31 at the lower end and the top end of the shell 21 and extends into the first phase-change material 22; the heat conduction column 33 includes an upper guide column 331 and a lower guide column which are abutted; the top end of the upper guide column 331 extends into the top layer 4, and the bottom end of the lower guide column extends into the first phase change material 22; the upper guide pillar 331 is a solid metal guide pillar, the lower guide pillar is a hollow metal guide pillar, and the second phase change material 333 is filled in the hollow of the lower guide pillar; a temperature control component is arranged between the upper guide column 331 and the lower guide column. The heat of the heating pipe 23 is transferred to the first phase-change material 22 wrapped outside, the heat is transferred to the lower guide pillar and the heat-conducting plate 31 at the lower end after being transferred by the first phase-change material 22, and then is transferred to the upper heat-conducting plate 31 through the temperature control component between the lower guide pillar and the upper guide pillar 331, the heat is transferred to the top layer 4 by the upper heat-conducting plate 31 and the upper guide pillar 331 extending into the top layer 4, and the heat is radiated indoors, so that the uniformity of heating is good, the heat is supplied from the lower part and then rises, and the circulation is good; the supporting columns 32 are used for supporting the two heat conducting plates 31, and supporting performance is improved.

Further, the lower guide post 332 extends into the first phase change material 22 between two adjacent layers of heating pipes 23, and can receive heat of the heating pipes 23 on two sides, so that the heat conduction efficiency is improved.

Further, the heat conducting plate 31, the upper guide posts 331 and the lower guide posts 332 are all made of metal with high heat conducting efficiency, including but not limited to copper.

In a further optimized scheme, the temperature control assembly comprises a sliding sheet 334 which is slidably connected in the hollow part of the lower guide pillar, and the bottom end of the sliding sheet 334 is abutted with the second phase change material 333; the top end of the sliding sheet 334 is fixedly connected with a connecting plate 336 through a connecting rod 335, the top surface of the connecting plate 336 is fixedly connected with a heat conducting block 337, and the heat conducting block 337 is in sliding connection with a yielding groove 338 on the bottom surface of the upper guide pillar 331; a plurality of return springs 339 are connected between the top surface of the sliding plate 334 and the top surface of the lower guide post. When the heating temperature of the heating pipe 23 is too high, the phase change of the first phase change material 22 from solid state to liquid state stores heat, the excess heat is transferred to the lower guide pillar 332 to cause the phase change of the second phase change material 333 in the lower guide pillar 332 from liquid state to gas state, the pressure in the hollow of the lower guide pillar is increased, the sliding sheet 334 is pushed to slide upwards, the sliding sheet 334 slides upwards to compress the return spring 339, then the connecting rod 335 and the connecting sheet are used for pushing the heat conducting block 337 to slide upwards in the abdicating groove 338, the connecting sheet drives the heat conducting block 337 to be separated from the top surface of the lower guide pillar 332, the heat transfer is slowed down, the heat transfer can only depend on the space between the two layers of heat conducting plates 31, the temperature of the heat conducting plates 31 at the upper end of the upper guide pillar 331 and the upper end of the lower guide pillar 31 is reduced, and the indoor heating temperature is prevented from being too high; when the temperature of the heating pipe 23 is reduced, the second phase change material 333 is changed from a gaseous state to a solid state, the pressure on the sliding plate is reduced, the return spring 339 pushes the sliding plate to descend, the connecting plate 336 and the heat conducting block 337 are driven to descend, the connecting plate 336 is in contact with the top surface of the lower guide pillar 332, heat is transferred from the lower guide pillar to the upper guide pillar 331 and then transferred to the indoor space, and the indoor temperature change is prevented from being too large.

Further, the sliding sheet 334 and the connecting column are made of heat-conducting inert materials, the heat conductivity is poor, and the edge of the sliding sheet is hermetically arranged with the hollow inner edge of the lower guide column; the connecting sheet and the heat conducting block 337 are good heat conducting materials, and have strong heat conductivity, so that the heat of the lower guide pillar is conveniently transferred to the upper guide pillar 331.

According to a further optimized scheme, the bottom layer 1 comprises a structural layer 11, a heat insulation layer 12, a reflection layer 13 and a fixing net 14 which are fixedly connected from bottom to top in sequence, and the top surface of the fixing net 14 is fixedly connected with the bottom surface of the shell 21 and used for fixing the shell 21; the structural layer 11 is an indoor floor or a prefabricated floor layer. The structural layer 11 is an indoor structural bottom surface and is an indoor unfinished ground or a top surface of a prefabricated floor slab; the heat insulation layer 12 is used for isolating the heat of the heat conduction layer 3 from being transferred downwards, so that the heat loss is reduced, and the energy is saved; the top surface of the reflecting layer 13 has heat reflecting capacity, and reflects most of the heat transferred from the heating layer 2 to return to the heating layer 2, so that the heat loss is further reduced; the fixing net 14 is placed on the top surface of the reflecting layer 13, and is used for fixing the shell 21 of the heating layer 2, the bottom layer 1 and the heating layer 2 are fixed and integrated through a buckle or a screw (not shown in the figure, and the prior art), the stability between each layer of the whole radiation heating mechanism is improved, the damage caused by the dislocation of each layer is prevented, the service life is prolonged, and the maintenance difficulty is reduced.

Furthermore, the heat insulation layer 12 is preferably a polystyrene board with the thickness of 20mm-25mm, and has good heat insulation effect, high strength and light weight; the reflecting layer 13 is preferably an aluminum foil reflecting plate, so that the reflecting effect is good, the strength of the reflecting surface is high, and the reflecting surface is not easy to damage; no. 18 low-carbon steel wire meshes are preferably selected as the fixing nets 14, materials are easy to obtain, the strength is good, the corrosion and rust prevention performance is high, the service life can be effectively prolonged, and the maintenance cost is reduced.

In a further optimized scheme, the top layer 4 comprises a leveling layer 41, the bottom surface of the leveling layer 41 is fixedly connected with the heat conducting plate 31 at the top end, and the top surface of the upper guide pillar 331 extends into the leveling layer 41; the top surface of the leveling layer 41 is fixedly connected with a floor layer 42. The leveling layer 41 is used for leveling the indoor bottom surface, simultaneously covering the heat conduction layer 3 and protecting the heat conduction layer 3; floor layer 42 is an interior floor, including but not limited to wood flooring and floor tiles, selected according to the user's preference.

Further, the leveling layer 41 is preferably formed by leveling pea gravel concrete, and a double-layer structure of pea gravel concrete and cement mortar may be selected, wherein the pea gravel concrete is below the cement mortar is above the cement mortar, and the selection can be performed according to actual needs.

In a further optimization scheme, the heat source assembly 5 comprises a heat source device 51, the heat source device 51 is communicated with the heat storage tank 6 through a heat source pipe 52, and a first circulating pump 53 is communicated with the heat source pipe 52; the two ends of the first circulation pump 53 are respectively communicated with a first electromagnetic valve 54, and the first electromagnetic valve 54 is electrically connected with the first circulation pump 53. The heat source pipe 52 and the heating pipe 23 are filled with fluid; when the first circulation pump 53 is started, the first electromagnetic valve 54 is opened, the fluid in the heat source pipe 52 flows from the heat source device 51 to the heat storage tank 6, and the heat is transferred to the heat storage tank 6, and then flows back to the heat source device 51 to continue the heat absorption cycle, so that the heat of the heat source device 51 is transferred to the heat storage tank 6 to be stored.

Further, the heat source device 51 includes, but is not limited to, a solar heater, an electric water heater, or a combination thereof, and is mainly used for heating the fluid in the heat source pipe 52, and transferring heat from the fluid to the heat storage tank 6.

Furthermore, the fluid in the heat source pipe 52 and the heating pipe 23 is preferably a mixture of purified water or distilled water and alcohol, so that the heat conduction effect is good, meanwhile, no scale deposit is generated, the probability of blockage in the heat source pipe 52 and the heating pipe 23 is reduced, the maintenance difficulty and the maintenance cost are reduced, and the service life is prolonged. The first electromagnetic valve 54 and the first circulating pump 53 are commercially available, and the installation technology and the working principle are the prior art and are not described herein.

Further, the first electromagnetic valve 54 and the first circulating pump 53 are electrically connected to a control panel (not shown), so as to manually or automatically control the start and stop of the first electromagnetic valve 54 and the first circulating pump 53; the control principle is the prior art, and is not described herein.

Further, the first solenoid valve 54 is a stop check valve to prevent the fluid in the heat source pipe 52 from flowing backward and affecting the heat conduction effect.

Further, the heating pipe 23 is communicated with a second circulating pump 24, two ends of the second circulating pump 24 are communicated with a second electromagnetic valve 25, the second electromagnetic valve 25 is electrically connected with the second circulating pump 24, and the second electromagnetic valve 25 and the second circulating pump 24 are electrically connected with the control panel; a second solenoid valve 25 and a second circulation pump 24 are used to control the circulation of fluid within the heating pipe 23. The second electromagnetic valve 25 and the second circulating pump 24 are commercially available, and the installation technology and the working principle are the prior art and are not described herein.

In a further optimized scheme, the heat storage tank 6 comprises a tank body 61, and two opposite side surfaces of the tank body 61 are respectively provided with a heat source inlet 62, a heat source outlet 63, a heating inlet 64 and a heating outlet 65; the heat source inlet 62 and the heat source outlet 63 are respectively communicated with the heat source pipe 52; the heating inlet 64 and the heating outlet 65 are respectively communicated with the heating pipe 23; a first connecting pipe 66 is connected between the heat source inlet 62 and the heat source outlet 63, and a second connecting pipe 67 is connected between the heating inlet 64 and the heating outlet 65; the tank 61 is filled with a third phase change material 68. The first connecting pipe 66 and the second connecting pipe 67 are both arranged in the box body 61, the first heat source pipe 52 is communicated with the heat source device 51 through the heat source inlet 62 and the heat source outlet 63 to form a circulation, and heat in the heat source device 51 is transferred to the third phase change material 68 through the first connecting pipe 66; the second connecting pipe 67 is communicated with the heating pipe 23 through the heating inlet 64 and the heating outlet 65 to form a circulation, and transports heat in the third phase change material 68 to the heating layer 2, so as to heat the room.

Further, in order to reduce the loss in the heat transfer process, the heat source pipe 52 and the heating pipe 23 located outside the heating layer 2 are both coated with the heat insulating layer 12, so that the loss of heat is reduced, and the utilization rate of heat is improved.

In a further optimized scheme, the first connecting pipe 66 comprises two first main pipes 661 arranged in parallel, the two first main pipes 661 are respectively communicated with the heat source inlet 62 and the heat source outlet 63, and a plurality of first branch pipes 662 are communicated between the two first main pipes 661; the position where the heat source inlet 62 communicates with the first main pipe 661 is lower than the heat source outlet 63; the second connecting pipe 67 comprises two second main pipes 671 arranged in parallel, the two second main pipes 671 are respectively communicated with the heating inlet 64 and the heating outlet 65, and a plurality of second branch pipes 672 are communicated between the two second main pipes 671; the heating inlet 64 communicates with the second branch 672 at a position lower than the heating outlet 65. The first connecting pipe 66 comprises two parallel first main pipes 661, the heat source inlet 62 and the heat source outlet 63 are respectively arranged on the two first main pipes 661, a plurality of first branch pipes 662 are communicated between the two first main pipes 661, the first branch pipes 662 increase the contact area of the first connecting pipe 66 and the third phase change material 68, and the heat transfer efficiency is improved; the second connecting pipe 67 comprises second main pipes 671 arranged in parallel, the heating inlet 64 and the heating outlet 65 are respectively arranged on the two second main pipes 671, and a plurality of second branch pipes 672 are communicated between the two second main pipes 671, so that the contact area between the second connecting pipe 67 and the third phase change material 68 is increased, and the heat exchange efficiency is increased; the heating inlet 64 and the heat source inlet 62 are both located below the side surface of the box body 61, the heating outlet 65 and the heat source outlet 63 are both arranged at the upper end of the side surface of the box body 61, fluid in the heating pipe 23 flows from low temperature to high temperature, and fluid in the heat source pipe 52 flows from high temperature to low temperature, both of which are low in height and high in height, so that the heat exchange time is increased, which is a common means for heat exchange in the prior art, and is not described herein again.

In a further optimized scheme, the first phase-change material 22 is a solid-liquid phase-change material; the second phase change material 333 is a gas-liquid phase change material; the third phase change material 68 is a solid-liquid phase change material.

The using method comprises the following steps:

sequentially laying a heat insulation layer 12, a reflection layer 13 and a fixing net 14 on a structural layer 11 according to a construction drawing, then placing a shell 21 of a heating layer 2 on the fixing net 14, effectively fixing, laying a certain amount of first phase change material 22 in the shell 21, then bending and laying a heating pipe 23 on the first phase change material 22 according to a construction drawing, stretching two ends of the heating pipe 23 to the outside of the heating layer 2, carrying out a water test, laying the rest first phase change material 22 on the heating pipe 23, filling the shell 21, wrapping the heating pipe 23, and finally covering the upper end of the shell 21 on the first phase change material 22 and sealing to prevent the first phase change material 22 from leaking during phase change; laying a heat conduction layer 3 on the heating layer 2, inserting the lower guide post into the heating layer 2, laying a leveling layer 41 in sequence, laying a floor layer 42 after the leveling layer 41 reaches a preset hardness, and finishing indoor installation.

The ends of the heating pipe 23 are connected to the heating inlet 64 and the heating outlet 65 of the heat storage tank 6, respectively, and the second circulation pump 24 and the second electromagnetic valve 25 are installed at appropriate positions on the heating pipe 23. The heat source device 51 is connected to the heat source inlet 62 and the heat source outlet 63 of the heat storage tank 6 through the heat source pipe 52, and the first electromagnetic valve 54 and the first circulation pump 53 are installed at appropriate positions of the heat source pipe 52, thereby completing the installation of the device.

When the heat storage tank is used, the heat source device 51 is started to generate heat, the first circulating pump 53 and the first electromagnetic valve 54 are started again to drive the fluid in the heat source pipe 52 to circulate, the heat is transported into the heat storage tank 6, is emitted by the first heating pipe 23, and is liquefied and phase-changed by the third phase-change material 68 to be absorbed; and the second circulating pump 24 and the second electromagnetic valve 25 are started to drive the fluid in the heating pipe 23 to circularly flow, and the heat is transferred from the third phase change material 68 to the fluid in the second connecting pipe 67, and finally is conveyed into the heating layer 2 to be dissipated, is transferred to the heat conducting layer 3, and finally is radiated into a room to be heated.

When the heat source device 51 stops intermittently, the first circulation pump 53 and the first electromagnetic valve 54 are closed, the third phase change material 68 is solidified by phase change, heat is dissipated and sent into the room through the second connecting pipe 67 for heating, heating interruption during intermittent operation of the heat source device 51 is prevented, the indoor temperature is kept constant within a certain range, and the comfort of indoor users is improved.

When the temperature of the fluid in the heating pipe 23 is too high, the temperature of the lower guide post rises along with the temperature of the fluid, the second phase change material 333 absorbs heat and gasifies, the sliding plate pushes the connecting plate 336 to rise to be separated from the lower guide post, the heat transfer between the lower guide post and the upper guide post 331 is slowed down or even stopped, the heat is liquefied and phase-changed by the first phase change material 22 to be absorbed and stored, a small amount of heat is transferred to the indoor through the heat radiation of air through the heat conducting plate 31, and the indoor temperature is prevented from being too high on the premise of maintaining the indoor temperature; when the temperature of the heating pipe 23 is lowered, the second phase change material 333 in the lower guide post is liquefied, the connecting plate 336 is lowered, the lower guide post and the upper guide post 331 are connected by heat conduction, and the heat in the first phase change material 22 is transferred to the room to heat the room, thereby preventing the temperature in the room from being lowered too much.

The phase-change material has a simple structure, fully utilizes the heat storage capacity of the phase-change material, effectively stores redundant heat, prevents the discomfort of inhabitants caused by overlarge indoor temperature fluctuation range, improves the comfort of the inhabitants, reduces the heat loss by the phase-change material, improves the utilization rate of the heat, reduces the energy consumption, and improves the economy and the environmental protection.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above embodiments are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a phase transition heat accumulation prevents overheated floor radiation device which characterized in that: comprises that

The radiant heating mechanism is arranged on the indoor ground and used for heating the indoor space; the radiant heating mechanism comprises a bottom layer (1), a heating layer (2), a heat conduction layer (3) and a top layer (4) which are sequentially arranged from bottom to top; the heating layer (2) comprises a shell (21), and the upper end surface and the lower end surface of the shell (21) are fixedly connected with the top surface of the bottom layer (1) and the bottom surface of the heat conducting layer (3) respectively; a first phase-change material (22) is filled in the shell (21), a heating pipe (23) is arranged in the first phase-change material (22), and the heating pipe (23) is wrapped by the first phase-change material (22);

the heat source mechanism is used for providing heat energy for the radiation heating mechanism and is communicated with the heating pipe (23); the heat source mechanism comprises a heat source component (5) and a heat storage tank (6), and the heat source component (5) is communicated with the heat storage tank (6); the heat storage tank (6) is communicated with the heating pipe (23); the heat storage tank (6) is filled with a third phase change material (68).

2. The phase-change heat-storage overheating-prevention floor radiation device according to claim 1, wherein: the heat conducting layer (3) comprises heat conducting plates (31) which are arranged in parallel, the heat conducting plate (31) at the upper end is fixedly connected with the bottom surface of the top layer (4), and the heat conducting plate (31) at the bottom end is fixedly connected with the top surface of the shell (21); a plurality of support columns (32) and a plurality of heat conduction columns (33) are arranged between the two heat conduction plates (31); the top end of the heat conduction column (33) penetrates through the heat conduction plate (31) at the upper end and extends into the top layer (4), and the bottom end of the heat conduction column (33) penetrates through the heat conduction plate (31) at the lower end and the top end of the shell (21) and extends into the first phase-change material (22).

3. The phase-change heat-storage overheating-prevention floor radiation device according to claim 2, wherein: the heat conducting column (33) comprises an upper guide column (331) and a lower guide column (332) which are abutted; the top end of the upper guide pillar (331) extends into the top layer (4), and the bottom end of the lower guide pillar (332) extends into the first phase-change material (22); the upper guide pillar (331) is a solid metal guide pillar, the lower guide pillar (332) is a hollow metal guide pillar, and a second phase change material (333) is filled in the hollow of the lower guide pillar (332); a temperature control component is arranged between the upper guide post (331) and the lower guide post (332).

4. The phase-change heat-storage overheating-prevention floor radiation device according to claim 3, wherein: the temperature control assembly comprises a sliding sheet (334) which is slidably connected in the hollow of the lower guide post (332), and the bottom end of the sliding sheet (334) is abutted with the second phase change material (333); the top end of the sliding sheet (334) is fixedly connected with a connecting plate (336) through a connecting rod (335), the top surface of the connecting plate (336) is fixedly connected with a heat conducting block (337), and the heat conducting block (337) is in sliding connection with a yielding groove (338) on the bottom surface of the upper guide pillar (331); a plurality of return springs (339) are connected between the top surface of the sliding sheet (334) and the top surface of the lower guide post (332).

5. The phase-change heat-storage overheating-prevention floor radiation device according to claim 1, wherein: the bottom layer (1) comprises a structural layer (11), a heat insulation layer (12), a reflection layer (13) and a fixed net (14) which are fixedly connected from bottom to top in sequence, and the top surface of the fixed net (14) is fixedly connected with the bottom surface of the shell (21) and used for fixing the shell (21); the structural layer (11) is an indoor ground or a prefabricated floor layer.

6. The phase-change heat-storage overheating-prevention floor radiation device according to claim 3, wherein: the top layer (4) comprises a leveling layer (41), the bottom surface of the leveling layer (41) is fixedly connected with the heat conducting plate (31) at the top end, and the top surface of the upper guide pillar (331) extends into the leveling layer (41); the top surface of the leveling layer (41) is fixedly connected with a floor layer (42).

7. The phase-change heat-storage overheating-prevention floor radiation device according to claim 3, wherein: the heat source assembly (5) comprises a heat source device (51), the heat source device (51) is communicated with the heat storage tank (6) through a heat source pipe (52), and a first circulating pump (53) is communicated with the heat source pipe (52); two ends of the first circulating pump (53) are respectively communicated with a first electromagnetic valve (54), and the first electromagnetic valve (54) is electrically connected with the first circulating pump (53).

8. The phase-change heat storage overheating prevention floor radiation device according to claim 7, wherein: the heat storage tank (6) comprises a tank body (61), and two opposite side surfaces of the tank body (61) are respectively provided with a heat source inlet (62), a heat source outlet (63), a heating inlet (64) and a heating outlet (65); the heat source inlet (62) and the heat source outlet (63) are respectively communicated with the heat source pipe (52); the heating inlet (64) and the heating outlet (65) are respectively communicated with the heating pipe (23); a first connecting pipe (66) is connected between the heat source inlet (62) and the heat source outlet (63), and a second connecting pipe (67) is connected between the heating inlet (64) and the heating outlet (65); the box body (61) is filled with a third phase change material (68).

9. The phase-change heat storage overheating prevention floor radiation device according to claim 8, wherein: the first connecting pipe (66) comprises two first main pipes (661) which are arranged in parallel, the two first main pipes (661) are respectively communicated with the heat source inlet (62) and the heat source outlet (63), and a plurality of first branch pipes (662) are communicated between the two first main pipes (661); the position of the heat source inlet (62) communicated with the first main pipe (661) is lower than the heat source outlet (63); the second connecting pipe (67) comprises two second main pipes (671) arranged in parallel, the two second main pipes (671) are respectively communicated with the heating inlet (64) and the heating outlet (65), and a plurality of second branch pipes (672) are communicated between the two second main pipes (671); the heating inlet (64) is communicated with the second branch pipe (672) and is lower than the heating outlet (65).

10. The phase-change heat storage overheating prevention floor radiation device according to claim 8, wherein: the first phase change material (22) is a solid-liquid phase change material; the second phase change material (333) is a gas-liquid phase change material; the third phase change material (68) is a solid-liquid phase change material.