CN108561990B

CN108561990B - Inflatable type enhanced heat exchange device arranged at indoor skirting line position

Info

Publication number: CN108561990B
Application number: CN201810366935.XA
Authority: CN
Inventors: 闫小康; 粟文兵; 刘康远; 张灵怡; 王哲; 韦景校; 王友
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2018-04-23
Filing date: 2018-04-23
Publication date: 2020-12-25
Anticipated expiration: 2038-04-23
Also published as: CN108561990A

Abstract

The utility model provides an establish inflatable intensive heat transfer device at indoor skirting line position, mainly by the compressor, the blast pipe, metal casing, cold and hot conversion pipe and baffle constitute, metal casing's middle part is equipped with the horizontal baffle in wind channel about forming, the upper and lower portion of horizontal baffle is equipped with communicating cold and hot conversion pipe each other, metal casing's top interval is equipped with a plurality of air outlets, the last spaced apart of horizontal baffle has a plurality of rectangular holes, the wind that the blast pipe let in gets into from horizontal baffle lower floor's wind channel, the spaced apart has a plurality of rectangular holes to get into upper air channel on the horizontal baffle again, wind in the upper and lower wind channel does the streaming motion under the effect of a plurality of baffles, with cold and hot conversion pipe fully contact, increase the intensity of convection current, make the temperature conversion more abundant. The heat transfer efficiency of the skirting line heat exchange device can be effectively improved, low-speed hot air is conveyed from the room to the middle of the room for heating, the heat dissipation is uniform, the heat dissipation efficiency of the device is high, the heat transfer is fast, the size is small, the occupied area is small, the device is simple, the protection is convenient, the maintenance is convenient, and the maintenance cost is low.

Description

Inflatable type enhanced heat exchange device arranged at indoor skirting line position

Technical Field

The invention relates to an inflatable heat exchange device, in particular to an inflatable heat exchange device for enhancing heat transfer, which is arranged at an indoor skirting line position and is suitable for the fields of air conditioning, heating and ventilation and the like.

Technical Field

According to the national standard 'civil building thermal design specification' (GB 50176-93), the average temperature of the coldest month and the hottest month in the year is used as a main index, the average temperature of the year is less than or equal to 5 ℃ and the days of which are more than or equal to 25 ℃ are used as auxiliary indexes, and the whole country is divided into five regions of severe cold, hot in summer, cold in winter, hot in summer, warm in winter and mild in temperature. The areas requiring heating are mainly areas with hot summer and cold winter, and also some southern areas. The number of days in which the average annual daily temperature is less than or equal to 5 ℃ is 60 to 89 days, and the number of days in which the average annual daily temperature is less than or equal to 5 ℃ is less than 60 days, but the number of days in which the average annual daily temperature is less than or equal to 8 ℃ is greater than or equal to 75 days. The climate is characterized by extremely hot summer, wet and cold winter, high air humidity, low indoor temperature and poor comfort when the outdoor temperature is below 5 ℃ without heating facilities. With the development of economic society in China and the improvement of living standard of people, buildings in the areas are gradually provided with heating facilities, and the heating mode mainly comprises decentralized heating. The heating equipment commonly adopted in China at present is wall-mounted radiators and floor heating. Wall-hung heating radiators are practical heating equipment, are very cheap and durable, are the main traditional heating mode in the family at present, but belong to single-point terminal heat dissipation, drive the room temperature, and the temperature is inhomogeneous in the room, and the comfort level is not high, easily smokes the wall, and is not pleasing to the eye, occupies the wall. Floor heating device is pre-buried pipeline on the floor, it is that ground is whole to generate heat, the radiating mode is from bottom to top, warm sufficient top is cold, it will be even some to generate heat relatively the radiator, the comfort level is higher, but need lay the heat preservation on the pipeline during installation, will occupy the floor height more than 6 centimeters at most after the dress, and produce the degree of difficulty to the maintenance in later stage, if pre-buried pipeline leaks or blocks up, it is extremely inconvenient to maintain, need find the place that leaks or block up and need demolish the heat preservation and destroy the floor, increase cost of maintenance. The problem that the traditional floor heating system is slow in temperature rise is solved, and the main reasons are two: firstly, the floor heating has large water capacity, and the heating needs time; secondly, the backfill layer of the floor heating has heat dissipation and obstruction.

In daily life, air conditioning is a common way to control room temperature. In summer, cold air is blown into a room through an air-conditioning refrigeration system to absorb indoor heat and reduce indoor temperature; in winter, the air conditioner adjusting system blows hot air into the room, so that the indoor heat is increased, and the indoor temperature is increased. The temperature is adjusted to be proper, and people obviously feel cool and comfortable by standing in front of the air conditioner in summer and blowing out cold air; in winter, the hot air is blown out, and people feel warm. Although the air conditioner is convenient to use and occupies less indoor space, the cost is high, the power consumption is high, the maintenance is also a great problem, and professional workers need to be found.

At present, a skirting line heating mode becomes a novel heating mode. But the present skirting line heating mode in market still has a lot of shortcomings, and its pipeline is less, generally is single tube backward flow heat transfer, and the heating effect can be less than a little. And the heat dissipation mode is mostly to heat the indoor by radiation, the indoor air is naturally convected, the speed of transferring the heat to the indoor middle and upper layers is relatively slow, the wall body can absorb a part of heat to cause heat loss to be large, the temperature after transferring to the indoor middle and upper layers is not ideal, the feeling and experience of people can be greatly discounted, and the energy conservation is not facilitated.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the inflatable convection type heat exchange device for enhancing heat transfer, which is simple in device, high in heat dissipation efficiency, quick in heat transfer, less in heat loss, small in size, small in occupied area, convenient to install and maintain and low in maintenance cost and is arranged at the position of an indoor skirting line.

The technical scheme is as follows: in order to achieve the purpose, the inflatable convection enhanced heat exchange device comprises a compressor, an air supply pipe and a metal shell embedded at an indoor skirting line position, wherein a horizontal partition plate forming an upper air duct and a lower air duct is arranged in the middle of the metal shell, a cold-heat conversion pipe communicated with each other is arranged at the upper part and the lower part of the horizontal partition plate, the cold-heat conversion pipe at the lower part is a water inlet pipe, the cold-heat conversion pipe at the upper part is a water return pipe, a plurality of air outlets are arranged at the top of the metal shell at intervals, a pipe opening connected with the air supply pipe is arranged at one side of the metal shell, a plurality of rectangular holes are arranged at intervals on the horizontal partition plate, air introduced into the air supply pipe enters from a lower air duct of the horizontal partition plate and then enters an upper air duct through a plurality of rectangular holes arranged at intervals on the horizontal partition plate, a plurality of air duct baffles I and II clamped on the upper cold-heat conversion pipe are arranged at intervals in the, wind in the upper and lower wind channels flows around under the action of the baffles and is fully contacted with the cold-heat conversion pipe, so that the convection strength is increased, and the temperature conversion is more sufficient.

The number of the cold-heat conversion pipes which are communicated with each other up and down is 1-3 respectively, and the number of the cold-heat conversion pipes is determined according to the inner diameter and the field arrangement of the cold-heat conversion pipes.

The cold and heat conversion pipe is 20-30 mm in inner diameter and 2-3 mm in wall thickness.

The air outlet part of the metal shell is inclined at 45 degrees.

The distance of a plurality of rectangular holes that the interval set up on the horizontal baffle is 1.2~1.5m, and the width of rectangular hole is 8~15 mm.

The width of the metal shell is not more than 8cm, and the height of the metal shell is not more than 15 cm.

Has the advantages that: the invention connects the compressor with the small heat exchange device arranged at the indoor skirting line position, the compressor blows pressurized air into the air duct of the small heat exchange device, the air rapidly flows around the cold-heat conversion pipe through four baffles in the air duct to increase the heat exchange between hot water and air in the cold-heat conversion pipe, and holes are formed on the 45-degree inclined plane of the shell of the heat exchange device to ensure that the heated air obliquely flows upwards at 45 degrees to more rapidly carry heat away from the device, thereby accelerating the rise of indoor temperature, increasing the heat exchange efficiency and reducing the heat loss. The shell of the heat exchange device is made of metal, so that the heat exchange mode can be realized by radiating heat indoors through the metal shell and also increasing the convection mode by inflating inwards, and the heat exchange efficiency is greatly improved. The heat exchanger is installed at the wall corner position around the room, the heat transfer direction is from the periphery to the middle, from bottom to top, the indoor temperature is more uniform, and the width of the heat exchanger is not more than 8cm, the height is not more than 15cm, the occupied area is small, the heat exchanger can move towards the wall when a new room is installed, and the occupied area is smaller. The device can be installed when a new house is decorated, can also be installed in an old house, does not influence secondary installation, and is convenient to maintain and low in cost. When summer is hot, cold water is introduced into the pipe, cold air can be blown out from the heat exchange device through heat exchange, the temperature is reduced, and the purpose of cooling is achieved. The heat transfer efficiency of the skirting line heat exchange device is effectively improved, and the heat supply mode is changed from a single radiation heat exchange mode into a radiation and convection comprehensive heat exchange mode. The low-speed hot air is conveyed from the periphery to the middle of the room for heating, the heat dissipation is uniform, the air conditioner is suitable for being used in families or public places, the ground does not need to be lifted, and the secondary decoration is not influenced. The device not only has the heating function, when using the cold source, still can realize the refrigeration effect. The defect of uneven single-point heat supply and heat dissipation of the wall-mounted radiator is overcome, and heat is uniformly dissipated from the periphery to the middle. Through the air inlet speed and the pressure of adjusting the compressor, the air can be let the human comfortable speed of a kind of let get into indoorly, makes indoor breeze blow the circulation, increases the comfort to take away the heat faster through the wind energy, can not cause local overheat. Similar to an air conditioner, the air conditioner realizes heating and refrigerating functions, and has the advantages of simple structure, convenience in installation, easiness in maintenance, lower cost and high comfort level.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a side view piping schematic of the present invention;

FIG. 3 is a schematic view of four baffle structures according to the present invention;

FIG. 4 is a schematic view of the installation position of the baffle and the partition plate according to the present invention;

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

FIG. 6 is a schematic plan view and a perspective view of an installation site for implementing the present invention.

In the figure: the air conditioner comprises a cooling-heating conversion part-1, a metal shell-2, a baffle I-3, a baffle II-4, an air outlet-5, an air supply pipe-6, a compressor-7, a partition plate-8, a baffle III-9, a baffle IV-10 and a wall body-11.

Detailed Description

An embodiment of the invention is further described below with reference to the accompanying drawings:

as shown in figure 1, the inflatable convection enhanced heat exchange device provided at an indoor skirting line position mainly comprises a compressor 7, an air supply pipe 6, a metal shell 2, a cold-hot conversion pipe 1 and four baffles, wherein the metal shell 2 is embedded at the indoor skirting line position, the middle part of the metal shell 2 is provided with a horizontal baffle plate 8 forming an upper air channel and a lower air channel, the upper part and the lower part of the horizontal baffle plate 8 are provided with the cold-hot conversion pipes 1 communicated with each other, the cold-hot conversion pipe at the lower part is a water inlet pipe, the cold-hot conversion pipe at the upper part is a water return pipe, the number of the cold-hot conversion pipes 1 communicated with each other up and down is 1-3, and the number is determined according to the. The cold-hot conversion pipe 1 is 20-30 mm in inner diameter and 2-3 mm in wall thickness. A plurality of air outlets are formed in the top of the metal shell 2 at intervals, the air outlets of the metal shell 2 are inclined at 45 degrees as shown in fig. 2, so that air after heat exchange in the device is blown out of the room at 45 degrees, the cold-heat conversion tubes 1 are arranged in a tube arrangement mode as shown in the figure, and the partition plate 8 is arranged in the middle of the upper part and the lower part; the width of the metal shell 2 is not more than 8cm, and the height is not more than 15 cm. A pipe orifice connected with the blast pipe 6 is arranged on one side of the lower part of the metal shell 2, as shown in figure 5; horizontal baffle 8 on the interval open have a plurality of rectangular holes, the distance of a plurality of rectangular holes that the interval set up on the horizontal baffle 8 is 1.2~1.5m, the width of rectangular hole is 8~15 mm. The wind that blast pipe 6 let in gets into from 8 lower floor's wind channels of horizontal baffle, it has a plurality of rectangular holes to get into upper air duct to open at an interval again on horizontal baffle 8, the interval is equipped with a plurality of I baffles 3 and II baffles 4 of card on the cold and hot converting tube of upper strata in the wind channel of upper strata, the interval is equipped with a plurality of III baffles 9 and IV baffles 10 of card on the cold and hot converting tube of lower floor in the wind channel of lower floor, as shown in fig. 3, the structure is according to heat transfer device inner structure design, thickness is 2mm ~ 4mm, the trompil diameter is confirmed according to the external diameter of cold and hot converting tube 1, the air inlet is in the. Wind in the upper and lower wind channels does the streaming motion under the effect of a plurality of baffles, and fully contacts with the cold-heat conversion pipe 1, so that the convection intensity is increased, and the temperature conversion is more sufficient.

The mounting positions of the baffle and the partition are shown in figure 4, the upper air duct is provided with a baffle 3 and a baffle 4, the lower air duct is provided with a baffle 9 and a baffle 10, the baffle 3 and the baffle 4 are adjacently arranged in the upper air duct, the baffle 9 and the baffle 10 are adjacently arranged in the lower air duct, and the baffle 8 separates the upper air duct from the lower air duct and is connected with the lower air duct from the opening.

In the embodiment shown in fig. 6, according to the size of the indoor space, the left surfaces of a plurality of air-filled convection enhanced heat exchange devices are in contact with the inner side surface of the wall body 11, and the heat exchange devices are arranged around the skirting line of the wall corner around the room, and the length is determined by the length of the wall corner. One end of the blast pipe is connected with a compressor 7, the compressor 7 is connected with the heat exchange device through the blast pipe 6, and air in the compressor 7 enters an air channel of the heat exchange device through the blast pipe 6. The air duct is divided into an upper layer and a lower layer by the partition plate 8, the partition plate 8 is provided with a rectangular hole with the width of 8-15 mm every 1.2-1.5 m, and the purpose of forming the rectangular hole is to enable wind to be uniformly blown out from the outlet 5. The heat exchange tubes 1 are totally 4, the lower two of the heat exchange tubes are used for feeding hot water, and the upper two of the heat exchange tubes are used for returning water. Wind from compressor 8 gets into from lower floor's wind channel earlier, follows the slot on the baffle 8 in proper order after the heat transfer and up upper air duct air-out, and the wind in lower floor's wind channel gets into upper air duct through a little reposition of redundant personnel behind the first slot, and most continues along the heat transfer that flows in lower floor's wind channel, meets next slot and continues to shunt. Four baffles are arranged in the device, an upper air duct is provided with an I-baffle 3 and an II-baffle 4, a lower air duct is provided with an III-baffle 9 and an IV-baffle 10, air in the air ducts makes a streaming motion under the action of the baffles and is fully contacted with the cold-heat conversion pipe 1, the convection strength is increased, the heat exchange is more sufficient, the heat exchange is strengthened, and the air flows out from the air outlet 5. The air outlet 5 is used for blowing the air in the device into the room at a proper speed in a 45-degree direction from the hole after the air in the device is heated or cooled, so as to raise or lower the room temperature and meet the requirements of people. The number of the four baffles is determined according to the actual size of a room, the four baffles are arranged adjacently in a crossed manner, the interval between the baffles is 300-500 mm, and the baffles can play a role in flow bypassing and can also play a role in supporting the cold-heat conversion pipe 1.

The area of the bedroom is 10-20 m²Preferably, the optimal super-large area is 15-18 m²The preferred aspect ratio is 4:3, e.g., 4.8m by 3.6m, and the area is about 17.3m². The length of the wall corner is 16.8m, the length of the heat exchange device is about 15m except the width and the allowance of the door, and the number of the four baffles is about 48 respectively.

The effect verification of the invention: heating and refrigerating simulation is carried out on a structure with the length of 5m by adopting Fluent software and utilizing a numerical method. Heating: the simulated air inlet speed is set to be 5m/s, the temperature is 288.15K (15 ℃), and the inner diameter of the blast pipe 6 is 32 mm; the water inlet speed of the pipeline is 0.5m/s, the temperature is 333.15K (60 ℃), and the inner diameter of the heat exchange pipe is 30 mm. The simulation result is shown in a numerical simulation result list table, so that the flow velocity of 16 air outlets is basically stabilized at about 0.57695471m/s, the air outlet is ensured to be uniform, and the phenomenon that no wind exists at the tail end is avoided; the temperature of the air outlet is basically stabilized at 311.3356K (38.1856 ℃), which is far higher than the national 17-18 ℃ indoor heating temperature in winter, and the indoor heating requirement can be ensured; the backwater temperature is 330.78334K (57.63334 ℃), which shows that the device can adapt to the heating requirement of longer distance, and the length of the device can be lengthened. Refrigerating: the simulated air inlet velocity was set at 5m/s, the temperature was 303.15K (30 ℃), the pipe inlet velocity was 0.5m/s, and the temperature was 288.15K (15 ℃). The numerical simulation result shows that the flow velocity of 16 air outlets is basically stabilized at about 0.58190863m/s, the temperature of the air outlets is basically stabilized at 295.0803K (22.1303 ℃), the indoor temperature is lower than the national indoor temperature in summer of 26 ℃, the indoor temperature can be reduced, and the refrigerating effect is achieved.

Table listing numerical simulation results

Claims

1. The utility model provides an establish at indoor skirting line position inflatable convection current and strengthen heat transfer device, includes compressor (7), blast pipe (6), its characterized in that: the air conditioner also comprises a metal shell (2) embedded at an indoor skirting line position, wherein the middle part of the metal shell (2) is provided with a horizontal partition plate (8) which divides an air channel into an upper layer and a lower layer, the upper part and the lower part of the horizontal partition plate (8) are provided with a cold-hot conversion pipe (1) which is communicated with each other, the cold-hot conversion pipe at the lower part is a water inlet pipe, the cold-hot conversion pipe at the upper part is a water return pipe, the top part of the metal shell (2) is provided with a plurality of air outlets at intervals, one side of the lower part of the metal shell (2) is provided with a pipe orifice connected with an air supply pipe (6), the horizontal partition plate (8) is provided with a plurality of rectangular holes at intervals, air introduced by the air supply pipe (6) enters from the lower air channel of the horizontal partition plate (8) and then enters the upper air channel through the plurality of rectangular holes at intervals on the horizontal partition plate (8, a plurality of baffles III (9) and IV (10) clamped on the cold-heat conversion pipe at the lower layer are arranged in the lower layer air channel at intervals, and air in the upper air channel and the lower air channel performs streaming motion under the action of the baffles and is fully contacted with the cold-heat conversion pipe (1), so that the convection strength is increased, and the temperature conversion is more sufficient; according to the size of the indoor space, the left surfaces of the inflatable convection enhanced heat exchange devices are contacted with the inner side surface of a wall body (11), the heat exchange devices are arranged around skirting lines of wall corners around the room, and the length is determined by the length of the wall corners; one end of the blast pipe (6) is connected with a compressor (7), the compressor (7) is connected with the heat exchange device through the blast pipe (6), and air in the compressor (7) enters an air channel of the heat exchange device through the blast pipe (6);

the number of the cold-heat conversion pipes (1) which are communicated with each other up and down is respectively 1-3, and is determined according to the inner diameter and the field arrangement of the cold-heat conversion pipes;

the inner diameter of the cold-heat conversion pipe (1) is 20-30 mm, and the wall thickness is 2-3 mm;

the air outlet part of the metal shell (2) is inclined at an angle of 45 degrees;

the distance between the plurality of rectangular holes arranged on the horizontal partition plate (8) at intervals is 1.2-1.5 m, and the width of each rectangular hole is 8-15 mm;

the width of the metal shell (2) is not more than 8cm, and the height is not more than 15 cm.