KR100446263B1 - Floor Heating by Circulating Low Temperature Air - Google Patents

Abstract

The present invention relates to Ondol heating, which is a heating method unique to Korea, and in more detail, the air is a heat transfer medium with a low heat source below a required heating temperature. The present invention relates to a method for constructing a closed circuit and forcing the circulation of hot air into the closed circuit to construct an ondol heating system capable of obtaining the maximum heating effect with a small heat source.

The present invention is largely composed of a heat source portion, an ondol portion, a piping portion, the heat source portion may be used as a variety of energy supply heat source, a heating element for heating the air that is a medium and a blower for forced circulation of the heated air (heat) And a heat source unit having a sensing element for controlling the intermittent operation of the heating element and the blower for controlling the heating temperature, and the ondol portion is formed with a thin and solid ondol floor surface and a lower insulation layer on the surface. Heat is supplied to the input port on the back side of the tube, and passes through the tubes formed of many customs.Then heat is radiated to the ondol floor (upper) surface to perform heating, and then goes out through the output port formed in the diagonal direction and circulated through the pipe connected to the heat source. It consists of pipe part that is a passage that is reheated and supplied afterwards, and the heat source part, the ondol part, and the pipe part are connected to the outside without an open part. As a closed circuit, it is designed to reduce the circulation load of the heated air and to precisely set and control the heating temperature. In this way, it is possible to continuously supply less heat than a normal heat source to enable heating at an appropriate temperature. It is characterized by constituting the ondol heating system.

The present invention is provided in such a configuration that the heating is possible even with a heat source having a temperature lower than the minimum temperature required in the conventional heating, so that even a heat source of unheated heat or waste energy recovered can be utilized as a heating heat source. This enables efficient utilization of resources, and on the other hand, the absolute heat loss is relatively reduced by lowering the temperature of the supply heat source, maximizing the energy saving effect, and providing a new method in addition to the inherent advantages of clean and comfortable ondol heating. This will establish a new concept of energy-saving ondol heating and activate globalization of ondol.

Description

Floor Heating by Circulating Low Temperature Air

The present invention is a unique heating method that has been traditionally used by Koreans for a long time, and the most energy-saving, clean, hygienic and ergonomically ideal heating method among heating developed by mankind. In particular, the present invention relates to an ondol heating method in which heating is performed by forcibly circulating an ondol part and a heat source part composed of a closed circuit using air heated from a low temperature heat source as a heating medium to maintain the ondol floor at an appropriate temperature.

In the long history of Ondol, the structure and function are changed. The selection of the most economical ondol material is easy to obtain, and the heating method has been changed as the heating method is required according to the change of lifestyle. Today, hot water ondol (BBB in FIG. 6) using a hot water boiler using various fuels as a heat source is widely used.

Although the advantages of ondol heating have been described above, today's hot water ondol (BBB in FIG. 6) has been limited to adopt the advantages of traditional ondol heating due to the difference in material and heating requirements among many ondol advantages. The review is as follows.

First, water (circulating water) is used as a medium for transferring heat from the boiler to the ondol, so there are problems of leakage and airtightness. Therefore, the piping system must be welded precisely or precisely screwed together. Construction cost became expensive and the construction itself became cumbersome work.

Second, the hot water pipe 141 will vary depending on the material and the diameter, but the normal gap between the gaps is about 30 cm, and the temperature difference between the pipe portion and the non-pipe portion occurs in the surface 111 and the heat storage layer 172, 蓄熱Iii) The layers 172 and 111 having a certain thickness should be formed on the hot water pipe 141 which also functions, and the ondol surface 111 should maintain 38 ℃ ~ 40 ℃, so the absolute temperature of the feed water is 50 ℃ ～. The heat storage layer 172 must be maintained at 60 ° C. or higher, and since the temperature of the ondol surface 111 reaches a required temperature after that, the supply temperature of the circulating water must be increased in proportion to the thickness of the heat storage layer. The higher the absolute temperature, the greater the heat loss in terms of heating loss.

On the other hand, according to the traditional feng shui ideology in Korea, it has been contraindicated to have water veins under house or house, but installing hot water ondol in the house artificially makes water veins, which violates the traditional idea. Do too.

The present invention to solve the above problems,

First, water is leaked by circulating in a heating system consisting of a closed circuit that maintains the pressure slightly higher than the normal pressure after heating the air as a heat source and using air as a heat medium. The problem of airtightness is that the configuration of the system becomes simpler than that of forced circulation using water as a medium, and the construction work can be greatly reduced, and construction costs can be greatly reduced, and the present invention will be described in detail below. It is an ondol structure to provide an ondol heating method that achieves a required temperature required by heating even when a supply temperature of a heat supply medium (circulating air) is 40 ° C.

Second, to obtain the same heating result as circulating air that is relatively low temperature compared to the supply water temperature of the existing hot water ondol, the heat storage layer is removed or minimized, and the ondol floor 110 is connected to the hot water pipe 141 of the existing hot water ondol. The inverse hemispherical fine hot tubular pipe 140 facing the ondol surface 110 is formed to be in direct contact with the back surface of the ondol floor 110 in the longitudinal direction to supply the temperature and supply circulation air of the ondol surface 110. To minimize the temperature deviation of the ondol floor 110, the front customs 140 is formed on the front (front surface) of the ondol floor 110 because the temperature difference for each part of the ondol floor 110 is also eliminated, the absolute temperature of the supply circulation air is the ondol floor (110) Even when supplied at a temperature of about 40 ℃ required by)) the hot air temperature and the temperature of the ondol floor (110) is characterized by constituting a prefabricated or fixed ondol so that the expected heating effect can be seen.

1 is a conceptual diagram of a system of the present invention

2 is a temperature gradient of the room temperature and room temperature of the present invention

Figure 3 is a vertical temperature distribution chart of the indoor ondol stone

4 is a cross-sectional view of the ondol of the present invention

AAA is the longitudinal section of line AA--A'A '

BBB front view of ondol

5 is a perspective view of a part of the cut structure ondol of the present invention

6 is a structural comparison of the ondol and the existing ondol of the present invention

AAA cross-sectional view of the ondol of the present invention

BBB is a cross-sectional view of conventional hot water ondol

7 is a cross-sectional view of the pipe connector of the present invention

※ Explanation of code for main part of drawing

100 units: Ondol

200 units: Piping

300 units: heat source and control

100: Ondol

110: ondol floor (heat sink) 230: straight connector

111: ondol floor of existing ondol 231: piping connection

120: (S) hot air input pipe 232: pipe insertion portion

(R) Hot air output tube 240: 90 degree connector

130: customs clearance wall 241: piping connection

140: hot air passing through the tubular pipe 242: pipe insertion portion

141: hot water pipe of the existing ondol 250: U connector

150: heat insulation layer 251: piping connection

151: insulation layer of the existing ondol 252: pipe insertion

160: insulation layer floor stabilization hole (孔) 260: cross connector

170: heat reflection layer 261: piping connection

171: heat reflection layer of the existing ondol 262: pipe insert

172: Existing Ondol

181: pipe fixing part and saddle 300: heat source and control

310, 311: blower (1), (2)

200: hot air supply and recovery piping 320, 321: heating elements (1), (2)

210: expansion tube 330, 331, 332, 333: temperature

211: pressure absorption chamber detection unit 1, 2, 3, 4

212: heat introduction chamber 340: body fixing frame

213: variable frame 350: heat recovery

214: expansion pipe connector 351: hot air supply port

Hereinafter, described in detail with reference to the accompanying drawings.

1 is a system diagram showing the concept of the present invention as a representative diagram of the heat source and the control unit 300, the air (40 ℃) is properly heated by the heating elements 320, 321 to the pressure blower (310, 311) hot air supply port ( 351 is pushed to the hot air input pipe (120S) of the ondol 100 through the pipe (200) and a large number of passing customs 130 formed between the customs clearance wall 140 at a 90 degree angle with the hot air input pipe (120S) Flowed into the hot air output pipe 120R formed in parallel with the hot air input pipe 120S for a balanced transfer of heat at the end of the passing customs pipe 130, the heat amount of the heat on the long side adhesive surface of the customs clearance wall 140 The pass-through pipes 130 are separated and transferred to the heat source part 300 through the pipe 200 after being transferred through the conduction, convection, and radiation to the ondol floor 110 of a thin material having good conductivity. To the heating elements 320 and 321 to be reheated through the heat recovery hole 350 It is configured to enter.

The system is composed of a closed circuit with no outside and no open point.There is no place for heat to go out except for the heat radiating point, so that all input heat is output by heating, maximizing energy saving, and the heat is blown by blowers 310 and 311. In addition, the feeding and pulling action is simultaneously performed in the inside, so it is easy to detect and control precisely, and the conveying load of the blower is lowered. In order to prevent abnormal pressure in the closed circuit, the expansion pipe 210 is connected to the expansion pipe connector 214 to a part of the pipe 200, and when the pressure in the circuit is increased, pressure is applied to the circulation heat introduction chamber 212 and airtightness is maintained. The pressure in the circuit is returned to the normal pressure while the variable frame 213 forming the barrier wall is pushed into the pressure absorbing chamber 211. On the contrary, when the pressure in the circuit is lowered, the variable frame 213 is introduced into the introduction chamber ( 212) to maintain the pressure in the miller circuit at a normal pressure, and a sensing unit 330 for detecting respective temperatures of the heating elements 320 and 321, the heat supply port 351, and the heat recovery port 350. , 331, 332, and 333 may operate the heating elements 320 and 321 and the blowers 310 and 311 based on the absolute temperature deviation Δt between the temperature of the hot air supply port 351 and the temperature of the hot air recovery port 350. There is a control unit that controls intermittently and closes to provide control precision and reliability It was configured to maintain a uniform pressure in the circuit.

7 is a straight line 230, 90 degrees 240, U (250), cross 260 connector required for the pipe connection of the ondol 100 of the present invention to be variously constructed on the characteristics of the ondol installation area and location Therefore it is optionally used.

2 and 3 are diagrams of the results of experiments on the effect of the ondol of the present invention. In FIG. 2, the temperature of the heated floor 110 and the change of the room temperature of the ondol floor 110 with the passage of time are displayed. The thick line indicates that when the temperature of the supply heat is 38 ° C. at 5 ° C., the temperature of the ondol floor 110 exceeds 30 ° C. within 20 minutes. The room temperature indicated by a thin solid line was maintained at an appropriate temperature of 20 ° C. after 1 hour, whereas when the circulating water of the same temperature was supplied to the existing hot water ondol, after 2 hours, the temperature of the ondol surface 111 (the thin dashed line) became Although it reached 22 degreeC, the heating effect was not acquired by this temperature.

3 is a measurement result of the indoor vertical temperature distribution of the laboratory room in which the heating temperature of the supply heat is 40 ° C. and the outside air is 5 ° C., and the left side of the diagram shows the temperature change value and the right side up to the ceiling. As the numerical value representing the height of AAA, the temperature of the ondol floor 110 reaches 38 ° C, but it is 25 ° C at BBB, 20cm above the floor, 22 ° C at CCC at 1 meter height, and 20 ° C at DDD near the ceiling. Even if the absolute temperature is lower than the existing feed water temperature, the result is that the proper heating purpose is achieved.

4, 5, and 6, the ondol 100 of the present invention is characterized in that there is no heat storage layer 172 and a separate ondol pipe 141, which is a structure for effective heat dissipation of low temperature heat On the lower insulation layer 150, a separate plate formed with a hot passage customs 130 corresponding to the pipe 141 of the existing ondol is installed or a customs clearance wall having a function of the passage customs 130 and the support on the top of the insulation layer 150. There is a method, such as finishing to form a direct contact with the floor 140 of the material that can withstand the life activities and the cradle to form (140). In order to save energy, the bottom portion of the pass-through customs 130 is bonded to a reflector such as aluminum foil to reflect the heat reflection to the upper portion of the ondol floor 110, which is common to the existing hot water ondol or the ondol of the present invention.

The heat is first introduced into the hot air input pipe 120S through the pipe 200 by the air pressure and the phosphorus pressure of the blower, and is transferred to the hot air output pipe 120R formed in parallel while being symmetrical in the diagonal direction. The sum of the cross-sectional areas is designed not to exceed the sum of the cross-sectional areas of the input pipe (S) and the output pipe (R) is designed to ensure a uniform heat dissipation in the entire area of the ondol floor (110) so that the resistance of the flow does not occur.

Since the insulating layer 150 should be installed on a non-horizontal base that requires ondol, the floor stabilizing hole 160 is laid at the bottom so that the insulating layer 150 and the entire ondol can be stably installed. After being installed, the 160 is separated into a small spherical space that is closed, so that convection does not occur in the space, so that heat insulation is formed, and thus it is formed for horizontal maintenance and stability, but also has a function of heat insulation.

As described above, the present invention uses the air as a heat medium and constitutes an ondol having a structure for quickly transferring heat to the ondol floor, thereby enabling the required heating with a small heat source, thereby reducing energy loss and maximizing heating efficiency. By providing a heat source that could not be used by existing hot water ondol or other methods of heating, various new heat sources such as waste heat recovery or sustained but unheated heat can be used as heating heat sources, saving energy and saving resources. In addition to providing an effective method of use, the construction is easy to reduce the construction cost of the heating system itself, and the ondol of the present invention can be formed in less than half of the existing hot water ondol, especially the apartment building (apartment) building To reduce the load on the building and lower the building height. Less yeojyeo is also expected effect of reducing the construction cost of the building.

Claims (1)

Using air as a heat medium, the air heated at low temperature (40 ° C.) is pushed into the hot air supply port 351 by the pressure blowers 310 and 311 to the hot air input pipe 120S through the pipe 200. ) Is transferred to the hot air input pipe (120S) and 90 degrees at the angle between the customs clearance wall 140 is introduced into the many passing customs pipes 130 and the hot air input pipe (120S) for balanced transfer of heat at the end of the passing customs pipe (130) ) Is transferred to the heat output pipe (120R) formed in parallel with the heat quantity of heat passing through the long direction adhesive surface of the customs clearance wall 140, separating the customs (130), good conductivity and thin adhesive ondol bonded to maintain airtightness As an ondol that is transferred to the heat generators 320 and 321 to be transferred to the heat source unit 300 through the pipe 200 and then reheated through the heat recovery hole 350 after the transfer to the bottom 110 through conduction, convection, and radiation, Expansion to prevent abnormal pressure in closed circuit 210 is connected to the expansion pipe connector 214 to a part of the pipe 200, and maintains the pressure in the circuit to normal to facilitate the circulation of the media air, even if the supply medium air is 40 ℃ temperature of the ondol floor 35 ℃ Energy-saving low-temperature hot-circulating ondol heating formed to maintain (AAA in FIG. 3).