CN108731509B - Vertical forced convection heat transfer device in corner - Google Patents
Vertical forced convection heat transfer device in corner Download PDFInfo
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- CN108731509B CN108731509B CN201810606201.4A CN201810606201A CN108731509B CN 108731509 B CN108731509 B CN 108731509B CN 201810606201 A CN201810606201 A CN 201810606201A CN 108731509 B CN108731509 B CN 108731509B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000005192 partition Methods 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004887 air purification Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000013021 overheating Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A vertical forced convection heat exchange device at a corner comprises a shell, a radiating pipe, a vertical partition plate, a baffle plate, a fan, a filter and a fixing plate; the shell is divided into an upper part and a lower part, the upper part of the shell is divided into an inner shell and an outer shell, a vertical partition plate and a radiating pipe are arranged in the inner shell, one end of the lower part of the radiating pipe is provided with a water inlet, and the other end of the lower part of the radiating pipe is provided with a water return port; a fan and a filter which are fixed through a fan clamping seat are arranged in the shell of the lower part, and an air outlet of the fan faces to a side radiating pipe on one side of the water inlet and is directly communicated and connected with the bottom end of the rear heat exchange air duct; the lower part of the shell panel is provided with an air inlet facing the filter. The air purified and filtered by the filter is sucked into the heat exchange channel outside the heat dissipation pipe through the fan, and the air flow flows around the heat dissipation pipe and the baffle plate arranged in the heat exchange channel to exchange heat with the hot water in the heat dissipation pipe, so that the temperature requirement of the outlet air is met. The indoor temperature is increased, and air purification and circulation are realized. The device has the advantages of simple structure, convenient installation and maintenance, environmental protection and energy conservation.
Description
Technical Field
The invention relates to a vertical wall corner heat exchange device, in particular to a vertical forced convection heat exchange device suitable for indoor wall corners, and belongs to the technical field of heating and the like.
Background
At present, radiator heating is the most domestic heating mode, but radiator heating effect has some weak points. The radiator can make local high temperature, and the heat dissipation is rapid, inhomogeneous, and the interior space can make the difference in temperature big greatly, and the position temperature that is close to the radiator is high, and the local temperature of keeping away from the radiator is low excessively, experiences the comfort not high. In winter, under general condition, in order to reduce temperature loss, indoor need close door and window, but can cause indoor outer air not to circulate like this, the air flow is poor and the quality is poor, is unfavorable for the people to breathe fresh air. In general, four indoor corner positions are rarely used reasonably, and are often dead corner positions which are easily ignored by people, and how to reasonably use the corner positions also becomes a concern.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a vertical forced convection heat exchange device at a corner, which can effectively solve the problem of local overheating, can circulate indoor air and purify air, can reasonably utilize the corner, has uniform air outlet speed and reasonable temperature, is convenient to install and maintain, and has a simple structure and low cost.
The technical scheme is as follows: in order to achieve the purpose, the invention discloses a vertical forced convection heat exchange device for a corner, which comprises a shell, a radiating pipe, a vertical clapboard, a baffle plate, a fan, a filter and a fixing plate, wherein the shell is provided with a plurality of vertical baffle plates; the shell is divided into an upper part and a lower part, the upper part of the shell is divided into an inner shell and an outer shell, a vertical partition plate forming a front heat exchange air channel and a rear heat exchange air channel is arranged in the inner shell, and the upper end of the vertical partition plate is away from the top end face and is used as a through channel of the front heat exchange air channel and the rear heat exchange air channel; an air outlet channel is arranged between the inner shell and the outer shell, and rib plates are arranged at the same time; the radiating pipes are distributed on two sides of the vertical partition plate, the tops of the radiating pipes are communicated through elbow pipes, one end of the lower part of each radiating pipe is provided with a water inlet, and the other end of the lower part of each radiating pipe is provided with a water return port; the plurality of baffle plates are arranged in the rear heat exchange air duct at intervals; the fixed plate is arranged in the front heat exchange air channel, air firstly enters the rear heat exchange air channel, and exchanges heat with hot water in the heat dissipation pipe around the baffle plate from the bottom of the rear heat exchange air channel to the upper part, so that air turbulence is increased, then the air enters the top of the front heat exchange air channel around the gap channel at the top of the vertical partition plate, then the air moves downwards for heat exchange, and finally the air enters the air outlet channel at an opening between the front heat exchange air channel and the bottom of the air outlet channel; an air outlet is formed in the front side of the shell of the air outlet channel; a fan and a filter which are fixed through a fan clamping seat are arranged in the shell of the lower part, an air outlet of the fan faces to the side radiating pipe on one side of the water inlet and is directly communicated and connected with the bottom end of the rear heat exchange air duct, and an air inlet faces to the filter; the lower part of the shell panel is provided with an air inlet facing the filter, and the air inlet of the fan is communicated with the air inlet arranged at the lower part of the shell.
The cross section of the shell is of a pentagonal structure with a square lacking corner or a structure with a right angle and an arc surface.
The shell is provided with a plurality of fixing lugs fixed at the corners of the wall.
2-3 radiating pipes are arranged.
The air inlet is provided with a sieve plate for preventing large dust or paper dust from entering the fan.
The number of the air outlets is 3-8.
And horizontal thin plates which stretch into the air outlet channels by 3-5 mm are arranged at the air outlets.
And a plurality of baffle plates arranged in the rear heat exchange channel have the same structure.
The fixing plates are divided into two structures, namely a triangular structure and a square structure, which are alternately arranged, and each fixing plate is provided with two fixing plates.
Has the advantages that: by adopting the technical scheme, the wall corner and the heat exchange device are combined together, the horizontal cross section of the structure is smaller, the floor area is saved, and the space of the wall corner can be reasonably utilized. Through induced draft and air-out, enable indoor air circulation flow, add the filter and can also filter air-purifying, improve air quality. The air circularly flows, so that the heat of the heat exchange device can be quickly transferred to the indoor space, and the problem of local temperature overheating like a wall-mounted radiator is avoided. The air purified and filtered by the filter is sucked into the heat exchange channel outside the heat dissipation pipe through the fan, the air flow flows around the heat dissipation pipe and the baffle plate arranged in the heat exchange channel and exchanges heat with hot water in the heat dissipation pipe, and the heat exchange channel is divided into two parts by the vertical partition plate so as to increase the heat exchange path of the heat exchange channel, so that the wind energy at the air outlet can be increased to a higher temperature, and the temperature requirement of air outlet is met. The hot air after heat exchange through the heat exchange channel enters the air outlet channel from the opening at the lower part, and is uniformly blown out from the air outlet under the action of the air outlet assembly, so that the indoor temperature is increased, and the air is purified and circulated. The device has the advantages of simple structure, convenient installation and maintenance, environmental protection, energy conservation, no other pollution substances and wide practicability.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a horizontal cross-sectional view of the invention at position A in FIG. 1;
FIG. 4 is a horizontal cross-sectional view of the present invention at position B in FIG. 1;
FIG. 5 is a partial view of the air outlet of the present invention;
FIG. 6 is a view showing the installation positions of the baffle and the fixing plate;
fig. 7 is a schematic view of the baffle and fixing plate structure.
In the figure: the heat exchanger comprises a shell 1, a radiating pipe 2, a vertical partition plate 3, a baffle plate 4, a water inlet 5, a fan 6, a fan clamping seat 7, a filter 8, an air inlet 9, a water return port 10, an air outlet 11, a fixing plate 12, a fixing lug 13, a rib plate 14, an opening 15, a rear heat exchange air duct 16, a front heat exchange air duct 17 and an air outlet channel 18.
Detailed Description
The invention will be further described with reference to examples in the drawings to which:
as shown in fig. 1 and 2, the vertical forced convection heat exchanger at the corner of the wall of the present invention mainly comprises a housing 1, a heat dissipation pipe 2, a vertical partition plate 3, a baffle plate 4, a fan 6, a filter 8, a fixing plate 12, and an air outlet 11 located at the front side of the housing. The shell 1 is divided into an upper part and a lower part, the upper part is structurally provided with a radiating pipe 2 and a ventilation air channel, the lower part is provided with a fan 6 and a filter 8, and the upper part and the lower part are separated by a horizontal plate. The upper part of the shell 1 is divided into an inner shell and an outer shell, a vertical partition plate 3 forming a front heat exchange air channel and a rear heat exchange air channel is arranged in the inner shell, and a distance is reserved between the upper end of the vertical partition plate 3 and the top end surface of the vertical partition plate 3 and is used as a through channel of the front heat exchange air channel 17 and the rear heat exchange air channel 16; an air outlet channel 18 is arranged between the inner shell and the outer shell, and rib plates 14 are arranged at the same time, as shown in figure 3, so that the overall strength and stability of the device are enhanced; be equipped with upper portion in upper portion's casing 1 and be curved cooling tube 2, 2 lower part one ends of cooling tube be water inlet 5, the lower part other end be return water mouth 10, cooling tube 2 is advanced hot water by a water inlet 5, increases cooling tube 2 to two through three-way pipe and elbow pipe in casing 1, increase heat transfer area in order to increase heat transfer efficiency, collects two cooling tubes 2 as one in return water mouth 10 position. A baffle plate 4 for fixing the radiating pipe at the side is arranged in a rear heat exchange air duct 16 at one side of the vertical partition plate 3 close to the water inlet 5, a fixing plate 12 for fixing the radiating pipe at the side is arranged in a front heat exchange air duct 17 at one side of the vertical partition plate 3 close to the water return opening 10, and the baffle plate and the fixing plate are shown in fig. 7; a fan 6 and a filter 8 which are fixed through a fan clamping seat 7 are arranged in the lower part of the shell 1, an air outlet of the fan 6 faces a radiating pipe on one side of the water inlet 5 and is directly communicated with the bottom end of the rear heat exchange air duct 16, and an air inlet of the fan 6 faces the filter 8 and is communicated with an air inlet 9 formed in the lower part of the shell 1; the upper part of the panel of the shell 1 is provided with a plurality of air outlets 11 at intervals, the lower part of the panel of the shell 1 is provided with an air inlet 9 facing the filter 8, and the air inlet 9 is provided with a sieve plate to prevent large dust or paper dust from entering the fan. The section of the shell 1 is of a pentagonal structure with a square lacking corner, a plurality of air outlets 11 are arranged on a panel on one side of the lacking corner at intervals, and the section of the shell 1 can also be of a structure of a right angle and an arc surface. The air outlets 11 are arranged at intervals in the middle of the cambered plate. The shell 1 is provided with a plurality of fixing lugs 13 fixed at the corners of the wall; the number of the radiating pipes 2 is 2-3.
As shown in fig. 2 and 4, the fan 6 is installed at the lower part of the casing 1, the fan 6 is fixed at the side and bottom surfaces of the casing 1 through two fan clamping seats 7, the air outlet of the fan 6 is directly communicated with the bottom end of the rear heat exchange air duct 16, the air inlet of the fan 6 is communicated with the air inlet 9 formed at the lower part of the casing 1, the filter 8 is installed at a position between the fan 6 and the air inlet 9 and mainly plays a role of purifying and filtering air, and a sieve plate is placed at the air inlet 9 to prevent large dust or paper dust from entering the fan.
As shown in fig. 2 and fig. 6, a plurality of baffle plates 4 with the same spacing are installed in a rear heat exchange air duct 16, fixing plates 12 with two specifications are installed in a front heat exchange air duct 17, air firstly enters the rear heat exchange air duct 16, heat exchange is carried out from the bottom of the rear heat exchange air duct upwards around a baffle plate 14 and hot water in a radiating pipe 2, turbulence of the air is increased, then the air enters the top of the front heat exchange air duct 17 by bypassing a top gap channel of a vertical partition plate 3, then the air is moved downwards for heat exchange, only the fixing plates 12 are needed to fix the radiating pipe 2 because of downward movement, resistance of air movement is reduced, and finally the air flows into an air outlet channel 18 from an opening 15 between the bottom of the front heat exchange air duct 17. Five air outlets 11 are formed in the front side of the shell of the air outlet channel 18, each air outlet is provided with a plurality of horizontal thin plates, as shown in fig. 5, arrows in the figure indicate the air flowing direction, and the thin plates extend into the air outlet channel by 3-5 mm and mainly play roles in guiding and changing the air outlet direction.
The specific embodiment is as follows: the device is placed at the corner of a room, the left side and the back side are respectively kept attached to two wall surfaces at the corner of the room according to the three-dimensional structure shown in figure 1, and the device is fixed with the wall by using fixing lugs 13 at all positions so as to ensure the installation stability of the device. The total height of the device is about 3m, the horizontal section size is 200 multiplied by 200mm, the floor area is small, and the spatial position of a corner can be reasonably utilized. The lower part of the shell 1 is provided with a fan 6, an air outlet of the fan 6 is directly connected with a heat exchange air channel at the upper part, an air inlet of the fan 6 is communicated with an air inlet 9 arranged on the shell 1, and a filter 8 is arranged between the two. When the fan works, air is sucked from the air inlet 9, purified by the filter 8, enters the fan from the air inlet of the fan 6, and is blown out from the air outlet of the fan 6 to enter the heat exchange air duct. The heat exchange air duct is divided into a front part and a rear part by a vertical partition plate 3, as shown in fig. 2, a distance is provided between the upper part of the vertical partition plate 3 and the top part, and the purpose is to communicate the front heat exchange air duct and the rear heat exchange air duct. The back heat exchange air duct 16 is internally provided with baffle plates 4 at the same interval, and the total number of the baffle plates is 7, so that the baffle plates play roles in supporting the radiating pipe 2 and in circulating flow. The front heat exchange air duct 17 is internally provided with two triangular and square fixing plates 12 which are alternately arranged at intervals and mainly play a role in fixing the radiating pipe 2 and also have a certain flow-around function. When the heat exchanger works, hot water enters from the water inlet 5, enters the inside of the heat exchanger and then is divided into two parts, the two parts flow through the two radiating pipes 2, and finally the water after heat exchange flows out from the water return port 10. Air that gets into back heat transfer wind channel from fan 6 can with the more abundant heat transfer of cooling tube 2 under the effect of establishing the streaming around of baffling board 4 in back heat transfer wind channel, after air from the bottom up flows the top that reachs back heat transfer wind channel, in the through channel through vertical baffle 3 upper portion gets into preceding heat transfer wind channel 17, from last down motion along preceding heat transfer channel 17, because the air in preceding heat transfer wind channel 17 is by last down flow, consequently different with the baffle in back heat transfer channel 16, for the fixed plate 12 of fixed cooling tube 2 effect, the breach is great, small in quantity, in order to reduce its movement resistance. Finally, the hot air flows into the air outlet channel 18 from the opening 15 at the lower part, and the hot air is uniformly blown out through the air outlets 11 provided with the air outlet thin plates so as to heat the temperature of the room and realize the heating effect.
In order to verify the heat exchange effect of the device, the established model is simulated by adopting Fluent software, and the simulation result is displayed in a numerical simulation result table. In the simulation, the inlet speed of hot water is 1m/s, the temperature is 333.15k (60 ℃), and the diameter of a pipe orifice is 25 mm; the fan outlet is the inlet set in the simulation, the speed is 4m/s, the temperature is 278.15k (5 ℃), and the specification is a square opening of 30mm × 60 mm. From the simulation situation, the wind speed of the whole wind outlet is uniform, the temperature is above 302.1983K (29.0483 ℃), and the indoor heating requirement in winter in China can be met.
Numerical simulation result table
Velocity(m/s) | Temperature(k) | |
|
0.79003534 | 302.2439 |
|
0.56052707 | 302.1983 |
|
0.56061380 | 302.3271 |
|
0.47020433 | 302.2604 |
|
0.87265717 | 304.9823 |
|
1 | 332.8719 |
Claims (5)
1. The utility model provides a vertical forced convection heat transfer device in corner which characterized in that: the radiator comprises a shell (1), a radiating pipe (2), a vertical partition plate (3), a baffle plate (4), a fan (6), a filter (8) and a fixing plate (12); the shell (1) is divided into an upper part and a lower part, the upper part is structurally provided with the radiating pipe (2) and the ventilation air channel, the lower part is provided with the fan (6) and the filter (8), and the upper part and the lower part are separated by a horizontal plate; the upper part of the shell (1) is divided into an inner shell and an outer shell, a vertical partition plate (3) forming a front heat exchange air channel and a rear heat exchange air channel is arranged in the inner shell, and the upper end of the vertical partition plate (3) is away from the top end surface and is used as a through channel of the front heat exchange air channel (17) and the rear heat exchange air channel (16); an air outlet channel (18) is arranged between the inner shell and the outer shell, and rib plates (14) are arranged at the same time; the radiating pipes (2) are distributed on two sides of the vertical partition plate (3), the tops of the radiating pipes are communicated through elbow pipes, one end of the lower part of each radiating pipe (2) is provided with a water inlet (5), and the other end of the lower part of each radiating pipe is provided with a water return port (10); the radiating pipes (2) are fed with hot water from a water inlet (5), 2-3 radiating pipes (2) are connected in the shell (1) through a three-way pipe and an elbow pipe so as to increase the heat exchange area and increase the heat transfer efficiency, and the 2-3 radiating pipes (2) are collected into one pipe at the position of the water return port (10); a plurality of baffle plates (4) are arranged in a rear heat exchange air channel (16) at one side of the vertical partition plate (3) close to the water inlet (5), a fixing plate (12) for fixing the radiating pipe at the side is arranged in a front heat exchange air channel (17) at one side of the vertical partition plate (3) close to the water return port (10), and the baffle plates (4) are identical in structure and are arranged in the rear heat exchange air channel (16) at intervals; the fixed plate (12) is arranged in the front heat exchange air duct (17), air firstly enters the rear heat exchange air duct (16), and exchanges heat with hot water in the radiating pipe (2) from the bottom of the rear heat exchange air duct (16) upwards around the baffle plate (4) to increase the turbulence of the air, then enters the top of the front heat exchange air duct (17) around the gap channel at the top of the vertical partition plate (3), then moves downwards for heat exchange, and finally enters the air outlet channel (18) at the opening (15) between the front heat exchange air duct (17) and the bottom of the air outlet channel (18); a plurality of air outlets (11) are formed in the front side of the shell of the air outlet channel (18); a plurality of air outlets (11) are arranged on the panel on the unfilled corner side at intervals; a fan (6) and a filter (8) which are fixed through a fan clamping seat are arranged in the shell (1) of the lower part, an air outlet of the fan (6) faces to a side radiating pipe on one side of the water inlet (5) and is directly communicated and connected with the bottom end of the rear heat exchange air duct (16), and an air inlet faces to the filter (8); an air inlet (9) facing the filter (8) is formed in the panel of the shell (1) at the lower part, and a sieve plate for preventing large dust or paper dust from entering the air inlet is arranged at the air inlet (9); the air inlet of the fan (6) is communicated with an air inlet (9) arranged at the lower part of the shell (1); the shell (1) is provided with a plurality of fixing lugs (13) fixed at the corners of the wall.
2. The vertical forced convection heat exchange device at the corner of the wall as claimed in claim 1, wherein: the section of the shell (1) is of a pentagonal prismatic structure with a square lacking corner or a structure with a right angle and an arc surface.
3. The vertical forced convection heat exchange device at the corner of the wall as claimed in claim 1, wherein: the number of the air outlets (11) is 3-8.
4. The vertical forced convection heat exchange device at the corner of the wall as claimed in claim 1, wherein: and horizontal thin plates which extend into the air outlet channel by 3-5 mm are arranged at the air outlets (11).
5. The vertical forced convection heat exchange device at the corner of the wall as claimed in claim 1, wherein: the fixing plates (12) are divided into two structures, namely a triangular structure and a square structure, which are alternately arranged, and two fixing plates are arranged.
Priority Applications (1)
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CN201810606201.4A CN108731509B (en) | 2018-06-13 | 2018-06-13 | Vertical forced convection heat transfer device in corner |
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CN201810606201.4A CN108731509B (en) | 2018-06-13 | 2018-06-13 | Vertical forced convection heat transfer device in corner |
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CN108731509A CN108731509A (en) | 2018-11-02 |
CN108731509B true CN108731509B (en) | 2020-09-04 |
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Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1455125A (en) * | 1973-02-23 | 1976-11-10 | Golsing P D | Room heaters |
CN2826233Y (en) * | 2006-02-16 | 2006-10-11 | 周根水 | Multifunctional warmer dedicated for energy-saving healthy wall-hanging boiler |
CN200972208Y (en) * | 2006-05-15 | 2007-11-07 | 王世亮 | Multifunction radiator with air purification device |
CN101762184A (en) * | 2008-12-22 | 2010-06-30 | 天津吉鑫达商贸营销有限公司 | angular radiator |
CN202501556U (en) * | 2012-02-07 | 2012-10-24 | 东莞市新格电器有限公司 | U air duct type electric heater |
CN204943658U (en) * | 2015-08-19 | 2016-01-06 | 天津城建大学 | Forced-convection heat radiator |
CN105180701B (en) * | 2015-10-13 | 2017-01-25 | 赵炜 | Arc-shaped radiating tube set arranged in corner |
CN106225041A (en) * | 2016-09-26 | 2016-12-14 | 珠海格力电器股份有限公司 | Heating device |
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2018
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