CN211012569U - Heat insulation and temperature reduction wall unit - Google Patents
Heat insulation and temperature reduction wall unit Download PDFInfo
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- CN211012569U CN211012569U CN201921856494.8U CN201921856494U CN211012569U CN 211012569 U CN211012569 U CN 211012569U CN 201921856494 U CN201921856494 U CN 201921856494U CN 211012569 U CN211012569 U CN 211012569U
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Abstract
The heat insulation and cooling wall unit comprises a heat insulation shell, a radiation metal plate and a heat exchange tube; the heat insulation shell is in a hollow cuboid shape, a heat exchange cavity is arranged in the heat insulation shell, and an opening communicated with the heat exchange cavity is formed in one side surface of the heat insulation shell; the radiation metal plate is arranged at the opening of the heat insulation shell and shields the opening part of the heat insulation shell, and an air inlet and an air outlet are respectively formed between the two opposite side edges of the radiation metal plate and the heat insulation shell; the heat exchange tube is repeatedly bent and arranged in the heat exchange cavity of the heat insulation shell. The utility model discloses combined heat conduction, radiation heat transfer and three kinds of heat transfer modes of convection heat transfer, had higher heat exchange efficiency, the heat dissipation demand of high temperature heat source equipment in the factory building can be satisfied to the thermal-insulated cooling system of high temperature heat source based on thermal-insulated cooling wall body unit is built, effectively reduces the temperature of high temperature heat source equipment peripheral region.
Description
Technical Field
The utility model relates to a building material field, especially a thermal-insulated cooling wall unit.
Background
In recent years, with the development of fine, integrated and intelligent industrial production, the arrangement of production lines in industrial plants becomes more compact, and the problem brought about is that the heat production amount in the plants is greatly increased. Meanwhile, high-temperature heat source equipment with large heat production quantity is arranged in part of the factory buildings, so that the technical problem of small temperature reduction and heat dissipation inside the factory buildings is solved.
How fast, effective, timely take away the heat that the inside high temperature heat source equipment of factory building produced, guarantee each regional temperature field evenly distributed of the inside of factory building, improve workman's thermal comfort, become the problem that waits to solve in the factory building cooling heat dissipation design urgently.
The industrial factory building is often the big space, uses the air conditioner to improve the hot environment in the factory building usually, though can satisfy the cooling heat dissipation demand of high temperature heat source equipment in the factory building through increasing cold load, but the air conditioner power consumption is higher, is not conform to energy-conserving requirement to can't guarantee the evenly distributed in each regional temperature field of factory building inside, and then can't satisfy workman's thermal comfort demand.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, and provide a thermal-insulated cooling wall unit, it is applied to the thermal-insulated cooling system of high temperature heat source, and it is abominable to have solved present industry factory building thermal environment, adopts the air conditioner to consume energy big, can't guarantee the evenly distributed in each regional temperature field of factory building inside and can't satisfy the problem of workman's thermal comfort demand to the radiating mode of high temperature heat source equipment cooling.
The technical scheme of the utility model is that: the heat insulation and cooling wall unit comprises a heat insulation shell, a radiation metal plate and a heat exchange tube; the heat insulation shell is in a hollow cuboid shape, a heat exchange cavity is arranged in the heat insulation shell, and an opening communicated with the heat exchange cavity is formed in one side surface of the heat insulation shell; the radiation metal plate is arranged at the opening of the heat insulation shell and shields the opening part of the heat insulation shell, an air inlet and an air outlet are respectively formed between the two opposite side edges of the radiation metal plate and the heat insulation shell, and the air inlet and the air outlet are respectively communicated to the heat exchange cavity of the heat insulation shell; the heat exchange tube is repeatedly bent and arranged in the heat exchange cavity of the heat insulation shell, part of the tube section of the heat exchange tube is contacted with the radiation metal plate, and two ends of the heat exchange tube respectively extend out of the heat exchange cavity of the heat insulation shell to form a water inlet end and a water outlet end.
The utility model discloses still further technical scheme is: the air inlet and the air outlet are respectively positioned at the upper end and the lower end of the heat exchange cavity, and the heat exchange tube is arranged in the area between the air inlet and the air outlet in the heat exchange cavity.
The utility model discloses a further technical scheme is: the cross-flow fan and the S-shaped air deflector are arranged on the cross-flow fan; the cross-flow fan is arranged in the heat exchange cavity of the heat insulation shell and is adjacent to the air inlet; the heat exchange tube is arranged in a heat exchange cavity of the heat insulation shell, the heat exchange tube is arranged in the heat exchange cavity, the S-shaped air deflectors are arranged in parallel, the S-shaped air deflectors are arranged in a staggered and penetrating mode with the heat exchange tube, correspondingly, the S-shaped air deflectors are provided with tube penetrating holes for the heat exchange tube to penetrate through, S-shaped air channels are formed between the adjacent S-shaped air deflectors, one end of each S-shaped air channel is adjacent to the.
The utility model discloses a further technical scheme is: and an infrared heat reflection coating is arranged on the wall of the heat exchange cavity of the heat insulation shell.
The utility model discloses a further technical scheme is: the air inlet and the air outlet are respectively provided with a shutter with adjustable blade angles.
The utility model discloses a further technical scheme is: the water inlet end of the heat exchange pipe is provided with a flow control valve A.
Compared with the prior art, the utility model have following advantage:
1. thermal-insulated cooling wall unit has combined heat conduction, three kinds of heat transfer modes of radiation heat transfer and convection current heat transfer, higher heat exchange efficiency has, the heat dissipation demand of high temperature heat source equipment in the factory building can be satisfied to the high temperature heat source heat insulation system of putting up based on thermal-insulated cooling wall unit, effectively reduce the temperature and the heat of high temperature heat source equipment peripheral region, the heat that has greatly reduced high temperature heat source equipment production is to diffusion on every side, and then avoided forming local high temperature region inside the factory building, the operation workman's of work in the factory building thermal comfort demand has been satisfied.
1-a, on one hand, the radiation metal plate (preferably a copper plate) has excellent heat radiation performance and heat conduction performance, is arranged towards the high-temperature heat source equipment to absorb heat emitted by the high-temperature heat source equipment and transfers the heat to the heat exchange tube in a heat radiation and heat conduction mode to heat and warm the heat exchange tube, and the heat exchange tube transfers the heat to circulating water in the heat exchange tube in a heat radiation mode to heat and warm the circulating water. Circulating water enters the heat exchange tube from the water inlet end of the heat exchange tube and flows out from the water outlet end of the heat exchange tube, so that heat is taken out of the heat exchange cavity, and high-efficiency heat exchange is realized.
1-b, on the other hand, when the cross-flow fan is started, high-temperature air around the high-temperature heat source equipment is sucked into the heat exchange cavity through the air inlet, the high-temperature air flows to the air outlet through the S-shaped air channel, carries out convective heat exchange with the heat exchange tube with relatively low temperature, transfers heat to the heat exchange tube, and then is discharged from the air outlet through the cooled air, so that the heat exchange effect is further enhanced, and the thermal comfort experience of operators is improved.
2. The heat insulation shell (preferably a polyurethane heat insulation board) of the heat insulation and cooling wall body unit has a good heat insulation effect, external heat can be effectively prevented from entering the heat exchange cavity through the heat insulation shell, and the heat exchange tube in the heat exchange cavity can only receive the heat from one side of the radiation metal plate, so that the heat exchange efficiency of the heat exchange tube for high-temperature heat source equipment is guaranteed.
3. The heat insulation and cooling wall body unit adopts a modular design, is convenient to transport and assemble, can be assembled into two blocks to form a heat insulation and cooling wall, and two heat exchange tubes in the heat insulation and cooling wall are respectively connected at a water inlet end and a water outlet end through a tee joint, so that a parallel pipeline structure is formed; compare the pipeline structure of establishing ties, the medium flow pressure in the pipeline has been reduced to the pipeline structure of parallelly connected, still makes to regulate and control the flow in any heat exchange tube in the thermal-insulated cooling wall alone through flow control valve A and becomes to realize controllable.
4. The heat-insulation and cooling cover is built on the basis of the heat-insulation and cooling wall, the heat-insulation and cooling cover covers the high-temperature heat source equipment, the heat-insulation and cooling wall in the heat-insulation and cooling cover is connected with an external water-cooling circulating device, and a high-temperature heat source heat-insulation and cooling system is formed by assembling, and can continuously and efficiently radiate and cool the high-temperature heat source equipment.
The invention is further described below with reference to the figures and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the positional relationship among the cross-flow fan, the S-shaped air deflector and the heat exchange tube of the present invention;
FIG. 3 is a schematic structural view of the heat insulation and cooling wall at a viewing angle;
FIG. 4 is a schematic structural view of the heat insulating and cooling wall from another view angle;
FIG. 5 is a schematic structural view of a joint of two heat-insulating and temperature-lowering wall units in the heat-insulating and temperature-lowering wall;
FIG. 6 is a schematic structural view of the heat insulating and cooling cover;
FIG. 7 is a schematic diagram of the structure of the heat insulation and temperature reduction system.
Illustration of the drawings: a heat-insulating casing 1; an infrared heat reflecting coating 11; a radiation metal plate 2; a heat exchange tube 3; a water inlet end 31; the flow control valve a 311; a water outlet end 32; a cross-flow fan 4; an S-shaped air deflector 5; an S-shaped air duct 51; an air inlet 61; an air outlet 62; a louver 63; a heat insulation and cooling wall 100; a back plate 101; a three-way joint A102; a three-way joint B103; an input tube 104; an output pipe 105; an air inlet chamber 106; an intake fan 107; a heat insulating and cooling cover 200; a cavity 201; a heat shield 202; an exhaust fan 203; a water separator 301; a water outlet A3011; a water inlet A3012; a water collector 302; a water inlet B3021; a water outlet B3022; a shell-and-tube heat exchanger 303; a shell side inlet 3031; a shell-side outlet 3032; a tube side inlet 3033; a tube side outlet 3034; a circulation water tank 304; water inlet C3041; a water outlet C3042; a water replenishment port 3043; a water-cooled water chiller 305; a water inlet D3051; a water outlet D3052; a circulating water pump A306; a feed pump A307; flow control valve B308.
Detailed Description
Example 1:
as shown in fig. 1-2, the heat insulation and cooling wall unit includes a heat insulation casing 1, a radiation metal plate 2, a heat exchange tube 3, a cross flow fan 4 and an S-shaped air deflector 5.
The heat insulation casing 1 is hollow cuboid, a heat exchange cavity is arranged in the heat insulation casing, and an opening communicated with the heat exchange cavity is formed in one side surface of the heat insulation casing.
The radiation metal plate 2 is installed at the opening of the heat insulation casing 1, and shields the opening of the heat insulation casing 1, an air inlet 61 and an air outlet 62 are formed between the two opposite side edges of the radiation metal plate and the heat insulation casing 1 respectively, and the air inlet 61 and the air outlet 62 are communicated to the heat exchange cavity of the heat insulation casing 1 respectively and are positioned at the upper end and the lower end of the heat exchange cavity respectively.
The heat exchange tube 3 is repeatedly bent and arranged in the area between the air inlet 61 and the air outlet 62 in the heat exchange cavity of the heat insulation shell 1, part of the tube section is contacted with the radiation metal plate 2, and two ends of the tube section respectively extend out of the heat exchange cavity of the heat insulation shell 1 to form a water inlet end 31 and a water outlet end 32.
The cross-flow fan 4 is installed in the heat exchange cavity of the heat insulation shell 1 and is adjacent to the air inlet 61.
The plurality of S-shaped air deflectors 5 are arranged in parallel in an area between an air inlet 61 and an air outlet 62 in a heat exchange cavity of the heat insulation shell 1 and are arranged in a staggered and penetrating mode with the heat exchange tubes 3, correspondingly, tube penetrating holes for the heat exchange tubes 3 to penetrate through are formed in the S-shaped air deflectors 5, S-shaped air channels 51 are formed between the adjacent S-shaped air deflectors 5, one end of each S-shaped air channel 51 is adjacent to the air outlet of the cross flow fan 4, and the other end of each S-shaped air channel 51 is adjacent to the air outlet.
Preferably, the material of thermal-insulated shell 1 is polyurethane insulation board (PU board), has good dampproofing, waterproof, thermal-insulated, heat retaining effect, can effectively block external heat and get into the heat transfer intracavity through thermal-insulated shell 1, makes the heat exchange tube 3 of heat transfer intracavity can only receive the heat that comes from 2 one sides of radiation metal sheet.
Preferably, be equipped with infrared heat reflection coating 11 on the chamber wall of the heat transfer chamber of thermal-insulated shell 1, infrared heat reflection coating 11 can reflect the heat back to the heat transfer intracavity, prevents that the heat in the heat transfer intracavity from directly contacting with thermal-insulated shell 1 and heating thermal-insulated shell 1 to thermal-insulated shell 1 has been avoided because of the difference in temperature is to outside heat transfer.
Preferably, the radiation metal plate 2 is a copper plate, which has excellent heat conduction, radiation heat exchange and convection heat exchange performances.
Preferably, a flow control valve a311 is installed on the water inlet end 31 of the heat exchange tube 3 to regulate and control the flow and pressure in the heat exchange tube 3, so as to achieve the effects of regulating and controlling the heat exchange amount and the heat exchange efficiency of the heat insulation and cooling wall unit.
Preferably, the heat exchange tubes 3 are arranged in a staggered manner, and fluid flows in curved channels which are alternately contracted and expanded among the tubes during staggered arrangement, so that the flow disturbance of the channels in the corridors among the tubes is severe compared with that of the channels in the rows, namely the heat exchange effect is stronger when the staggered arrangement is adopted than that of the channels in the rows.
Preferably, the air inlet 61 and the air outlet 62 are respectively provided with a louver 63 with adjustable blade angle, which is used for adjusting the air inlet and outlet direction.
Brief description the utility model discloses a theory of operation:
during operation, the radiation metal plate 2 absorbs external heat and transfers the heat to the heat exchange tube 3, on one hand, the part of the radiation metal plate, which is in contact with the tube body of the heat exchange tube 3, transfers the heat to the heat exchange tube 3 in a heat conduction mode, and on the other hand, the part of the radiation metal plate, which is not in contact with the tube body of the heat exchange tube 3, transfers the heat to the heat exchange tube 3 in a radiation heat exchange mode.
Meanwhile, the activated cross flow fan 4 continuously sucks air with higher temperature into the heat exchange cavity of the heat insulation shell 1 through the air inlet 61, and then the air with higher temperature flows into the S-shaped air duct 51 and finally flows out of the air outlet 62. In the process that the air with higher temperature flows in the S-shaped air channel 51, the air and the heat exchange tube 3 with relatively lower temperature perform heat convection and transfer, so that heat is transferred to the heat exchange tube 3, and finally the air with relatively lower temperature is discharged from the air outlet 62.
Meanwhile, circulating water (i.e. cold water) enters the heat exchange tube 3 through the water inlet end 31 of the heat exchange tube 3, flows towards the water outlet end 32 of the heat exchange tube 3, and is finally discharged from the water outlet end 32 of the heat exchange tube 3. In the process that the circulating water flows in the heat exchange tube 3, the heat of the heat exchange tube 3 is absorbed, the temperature is continuously increased, and finally the circulating water is discharged from the water outlet end 32 of the heat exchange tube 3, so that the effects of continuously dissipating heat and reducing temperature are achieved.
Brief description the utility model discloses an use:
the insulated cooling wall unit may be used to assemble the insulated cooling wall 100. As shown in fig. 3-5, the heat insulating and cooling wall 100 includes a heat insulating and cooling wall unit, a back plate 101, a three-way joint a102, a three-way joint B103, an input pipe 104, an output pipe 105, an air inlet chamber 106 and an air inlet fan 107. The two heat insulation and temperature reduction wall units are arranged in parallel and are respectively installed on the back plate 101 through respective heat insulation shells 1, the water inlet ends 31 of the heat exchange tubes 3 of the two heat insulation and temperature reduction wall units are opposite, and the water outlet ends 32 of the heat exchange tubes 3 of the two heat insulation and temperature reduction wall units are opposite. The first end and the second end of the three-way joint A102 are respectively communicated with the water outlet ends 32 of the heat exchange tubes 3 of the two heat insulation and temperature reduction wall units, and the third end of the three-way joint A102 is communicated with the output tube 105. The first end and the second end of the three-way joint B103 are respectively communicated with the water inlet ends 31 of the heat exchange tubes 3 of the two heat insulation and cooling wall units, and the third end of the three-way joint B103 is communicated with the input tube 104. The air inlet chamber 106 is installed at the side of the heat insulation and cooling wall unit, and the lower end of the air inlet chamber is provided with an air inlet channel, one end of the air inlet channel is located at one side of the radiation metal plate 2 of the heat insulation and cooling wall unit, and the other end of the air inlet channel is located at one side of the back plate 101. An intake fan 107 is installed in the intake passage of the intake chamber 106.
The heat insulating and cooling wall 100 can be used to build a heat insulating and cooling cover 200. As shown in fig. 6, the heat insulating and cooling cover 200 is a hollow quadrangular prism (or a hexagonal prism or an octagonal prism) as a whole, and has a cavity 201 for accommodating high temperature heat source equipment therein, a heat insulating and cooling wall 100 as a side wall thereof, and a heat insulating plate 202 as a top wall thereof, wherein the heat insulating plate 202 is provided with an air outlet for communicating the upper and lower ends of the heat insulating plate 202, and an exhaust fan 203 is installed on the air outlet.
The heat shield 200 may be used to construct a heat shield system. As shown in fig. 7, the heat insulation and cooling system includes a heat insulation and cooling cover 200 and a water cooling cycle device. The water-cooling circulating device comprises a water separator 301, a water collector 302, a shell-and-tube heat exchanger 303, a circulating water tank 304, a water-cooling type water cooler 305, a circulating water pump A306, a water feeding pump A307 and a flow control valve B308. The water distributor 301 is provided with a plurality of water outlets A3011 and a water inlet A3012, the water outlets A3011 are communicated to the exposed end of the input pipe 104 of the heat insulation and cooling wall 100 through pipelines, and are in one-to-one correspondence with the heat insulation and cooling wall 100. The water collector 302 is provided with a plurality of water inlets B3021 and a water outlet B3022, and the water inlets B3021 are connected to the exposed ends of the output pipes 105 of the heat insulation and cooling wall 100 through pipelines and are in one-to-one correspondence with the heat insulation and cooling wall 100. The shell-and-tube heat exchanger 303 is provided with a shell pass inlet 3031, a shell pass outlet 3032, a tube pass inlet 3033 and a tube pass outlet 3034, and the tube pass inlet 3033 is communicated with a water outlet B3022 of the water collector 302 through a pipeline. The circulating water tank 304 is provided with a water inlet C3041, a water outlet C3042, a water replenishing port 3043 and a water level detecting element (not shown in the figure) for detecting the water level in the inner cavity of the circulating water tank, and the water inlet C3041 is communicated with a tube side outlet 3034 of the shell-and-tube heat exchanger 303 through a pipeline. The water-cooled water chiller 305 is provided with a water inlet D3051 and a water outlet D3052, the water inlet D3051 is communicated with a water outlet C3042 of the circulating water tank 304 through a pipeline, and the water outlet D3052 is communicated with a water inlet A3012 of the water separator 301 through a pipeline. The circulating water pump A306 is arranged on a pipeline between a water outlet B3022 of the water collector 302 and a tube side inlet 3033 of the shell-and-tube heat exchanger 303. One end of the feed pump a307 is communicated with a water replenishing port 3043 of the circulation water tank 304 through a pipe, and the other end is communicated with an external cold water source through a pipe. The flow control valve B308 is arranged on a pipeline between the water outlet A3011 of the water separator 301 and the exposed end of the input pipe 104, and corresponds to the heat insulation and cooling wall 100 one by one.
Briefly describing the working process of the heat insulation and temperature reduction system:
1. the heat insulation and cooling cover 200 is covered outside the high-temperature heat source device, so that the radiation metal plate 2 of each heat insulation and cooling wall body unit is positioned inside the heat insulation and cooling cover 200 (i.e. in the cavity 201).
2. The air inlet fan 107 and the exhaust fan 203 are started, so that the air with relatively low temperature outside the heat-insulation and temperature-reduction cover 200 enters the cavity 201 of the heat-insulation and temperature-reduction cover 200 through the air inlet fan 107, the air with relatively high temperature in the cavity 201 is discharged to the outside of the heat-insulation and temperature-reduction cover 200 through the exhaust fan 203, and the heat dissipated by the high-temperature heat source equipment is continuously taken away through the exchange of the air inside and outside the heat-insulation and temperature-reduction cover 200, so that the continuous heat dissipation and temperature reduction of the high-temperature heat source. In this step, an air duct (not shown) is installed at the air outlet of the top wall of the heat insulation and cooling cover 200, and the air with relatively high temperature discharged by the exhaust fan 203 is guided to the outdoor for discharge through the air duct.
3. Starting circulating water pump A306, making the circulating water in the internal pipeline of the heat dissipation cooling system constantly circulate, the route of circulation flow is: the heat exchange tube 3, the water collector 302, the shell-and-tube heat exchanger 303, the circulating water tank 304, the water-cooled water chiller 305, the water separator 301 and the heat exchange tube 3 are sequentially connected in sequence, wherein in the circulating flowing process of circulating water, heat absorption and temperature rise are firstly carried out in the heat exchange tube 3, then heat exchange with cold water is carried out in the shell-and-tube heat exchanger 303 for cooling, then cooling is carried out in the water-cooled water chiller 305, finally the heat exchange tube 3 returns for repeated heat absorption and temperature rise, and the steps are repeated, so that continuous.
Claims (6)
1. Thermal-insulated cooling wall body unit, characterized by: comprises a heat insulation shell (1), a radiation metal plate (2) and a heat exchange tube (3); the heat insulation shell (1) is in a hollow cuboid shape, a heat exchange cavity is arranged in the heat insulation shell, and an opening communicated with the heat exchange cavity is formed in one side surface of the heat insulation shell; the radiation metal plate (2) is arranged at an opening of the heat insulation shell (1) and shields the opening part of the heat insulation shell (1), an air inlet (61) and an air outlet (62) are formed between two opposite side edges of the radiation metal plate and the heat insulation shell (1) respectively, and the air inlet (61) and the air outlet (62) are communicated to a heat exchange cavity of the heat insulation shell (1) respectively; the heat exchange tube (3) is repeatedly bent and arranged in a heat exchange cavity of the heat insulation shell (1), part of tube section of the heat exchange tube is contacted with the radiation metal plate (2), and two ends of the heat exchange tube respectively extend out of the heat exchange cavity of the heat insulation shell (1) to form a water inlet end (31) and a water outlet end (32).
2. The insulated cooling wall unit of claim 1, wherein: the air inlet (61) and the air outlet (62) are respectively positioned at the upper end and the lower end of the heat exchange cavity, and the heat exchange tube (3) is arranged in the area between the air inlet (61) and the air outlet (62) in the heat exchange cavity.
3. The insulated cooling wall unit of claim 1 or 2, wherein: the device also comprises a cross-flow fan (4) and an S-shaped air deflector (5); the cross-flow fan (4) is arranged in a heat exchange cavity of the heat insulation shell (1) and is adjacent to the air inlet (61); the heat-insulation heat-exchange tube type air conditioner is characterized in that a plurality of S-shaped air deflectors (5) are arranged in parallel in an area between an air inlet (61) and an air outlet (62) in a heat exchange cavity of the heat-insulation shell (1) and are arranged in a staggered and penetrating mode with the heat exchange tubes (3), correspondingly, through-tube holes for the heat exchange tubes (3) to penetrate through are formed in the S-shaped air deflectors (5), S-shaped air channels (51) are formed between adjacent S-shaped air deflectors (5), one ends of the S-shaped air channels (51) are adjacent to the air outlet of the cross-flow fan (4), and the other ends of.
4. The insulated cooling wall unit of claim 3, wherein: and an infrared heat reflection coating (11) is arranged on the wall of the heat exchange cavity of the heat insulation shell (1).
5. The insulated cooling wall unit of claim 4, wherein: the air inlet (61) and the air outlet (62) are respectively provided with a shutter (63) with adjustable blade angles.
6. The insulated cooling wall unit of claim 5, wherein: a flow control valve A (311) is arranged on a water inlet end head (31) of the heat exchange tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921856494.8U CN211012569U (en) | 2019-10-31 | 2019-10-31 | Heat insulation and temperature reduction wall unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921856494.8U CN211012569U (en) | 2019-10-31 | 2019-10-31 | Heat insulation and temperature reduction wall unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211012569U true CN211012569U (en) | 2020-07-14 |
Family
ID=71481951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921856494.8U Expired - Fee Related CN211012569U (en) | 2019-10-31 | 2019-10-31 | Heat insulation and temperature reduction wall unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211012569U (en) |
-
2019
- 2019-10-31 CN CN201921856494.8U patent/CN211012569U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20201031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |