JPH0210351B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for raising the temperature of outside air for ventilation and introducing it into a room without providing a special heat source, particularly during the winter in cold regions.

(Prior art) In general, combustion-type heating equipment such as stoves are installed indoors during the winter in cold regions, but a considerable portion of the heat generated is effectively used outdoors as combustion waste gas. Normally, the indoor part of the flue is elongated to make use of waste heat, but this has little effect. On the other hand, indoors are kept closed to prevent warm air from escaping and the air tends to become polluted, but since the outside temperature is very low, if outside air is brought directly into the room for ventilation, the room temperature will suddenly drop. In order to prevent this problem, if a separate heat source was provided to heat the introduced outside air, the heating cost would be extremely high.

In addition, various indoor heating devices that utilize solar heat have been proposed. For example, there are devices that absorb and propagate solar heat indoors by using a wall material with a heat ray absorption film on the outer wall of a building, but this method is suitable for use in cold regions etc. In the winter, there is little solar heat to be enjoyed, so the effectiveness of this type of device is small and the heat absorption rate is not very good.

(Problems to be Solved by the Invention) This invention attempts to solve the above-mentioned problems.The present invention aims to solve the above-mentioned problems. The purpose of the present invention is to provide an outside air introduction device that is advantageous in terms of performance.

(Means for Solving the Problems) In order to achieve the above object, an outside air introduction device into a building according to the present invention includes a heat exchange room provided with a heat pipe in the basement of the building, and an air supply relay tank communicating with the heat exchange room. At the same time, a heat absorbing part for exhaust heat exchange is provided in the smoke exhaust pipe installed inside the building, and the heat absorbing part and the heat pipe are connected by a fluid circulation pipe, while the upper part is open to the outside air. to form an intake hole whose lower part is located underground, and connect the lower part of the intake hole and the above-mentioned relay tank through an outside air introduction pipe placed underground, and connect an exhaust pipe from inside the building to the above-mentioned relay tank. The system has a configuration in which a plurality of outdoor distribution pipes are installed, which extend through the tank to the exhaust port and communicate between the heat exchange room and the building interior.

(Function) In the above configuration, the outside air introduced through the intake hole first passes through the outside air introduction pipe and is heated through heat exchange with the geothermal heat that is always maintained at a higher temperature than the outside air temperature in winter. The air flows into the supply air introduction tank, where it further exchanges heat with geothermal heat and indoor exhaust heat, and flows into the heat exchange room at a higher temperature. In this heat exchange chamber, the fluid, which has become high in temperature through heat exchange with the waste gas passing through the flue, exchanges heat with the introduced outside air as it flows through the heat pipe. The system is then introduced into each room of the building through external pipes, providing heating and ventilation at the same time. Furthermore, as the air that has been heated through heat exchange as described above becomes lighter and flows into the building interior as an upward current, a suction action is naturally generated in the intake holes.

(Embodiments) The present invention will be described below based on illustrated embodiments.

As shown in Figures 1 to 4, the building 1 has its concrete foundation frame 1a buried to a depth of about 0.5 to 1 m below the ground, and the ground inside the foundation frame 1a and on the lower side of the earthen floor concrete 1b. A heat exchange chamber 2 is provided therein, and an air supply relay tank 3 is buried directly below the heat exchange chamber 2. Further, in the downstairs room A of the building 1, a stove 5 is installed on a floorboard 4, and an exhaust pipe 5a thereof is provided with an endothermic part 6 for exchanging exhaust heat. Furthermore, outside of building 1, there is an outer wall 1c.
Intake holes 7 are formed along the outer surface of the base frame 1a. 8 is an underground inspection room provided on one side of the heat exchange room 2, and 9 is an outdoor exhaust port.

The heat exchange chamber 2 has a heat insulating layer 1 whose peripheral side and bottom are mainly made of synthetic resin foam such as urethane foam.
0, and the surface of the heat insulating layer 10 facing the underground inspection room 8 constitutes a removable inspection port 2a,
A drain hole 2b is provided at the bottom. A heat exchange tank 11 made of synthetic resin or metal, preferably glass fiber reinforced plastic (FRP), is installed inside the heat exchange chamber 2, and a heat pipe 12 made of stainless steel or the like is installed inside the heat exchange tank 11. .
Both ends of the heat pipe 12 include fluid circulation pipes 13a made of stainless steel or the like on the inlet side and the outlet side.
13b, it is connected to the heat absorption part 6 for exhaust heat exchange to constitute a fluid circulation path, and fluid is circulated in the circulation path via a pump 14a provided in the middle of the introduction side fluid circulation pipe 13a. be done. Water (hot water) is usually used as this fluid, but gases such as air and steam can also be used. In addition, the fluid circulation pipe 13a on the outlet side has a groundwater introduction pipe 1.
A drain pipe 15b is connected to the fluid circulation pipe 13b on the introduction side via a valve 16, and the groundwater introduction pipe 15a is connected to a groundwater pump 14b installed outdoors.

On the other hand, the upper end of a ventilation pipe 17 that communicates the interior of the heat exchange tank 11 with the air supply relay tank 3 protrudes into the bottom of the heat exchange tank 11 where the drain hole 11a is provided.
In addition, one end of each of a plurality of external distribution pipes 18 made of hard polyvinyl chloride or the like is connected to the heat exchange tank 11, and the other ends of each of these distribution pipes 18 are connected to air blowers installed in the downstairs and upper rooms A and B. It is connected to port 19. Incidentally, a blowing fan may be attached to these blowing ports 19.

The air supply relay tank 3 is made of synthetic resin or metal, preferably glass fiber reinforced plastic (FRP), and is buried underground to increase the heat exchange efficiency between the geothermal heat and the interior by increasing the contact area with the outside. A large number of fins 3a are formed for this purpose, and a lid-shaped inspection opening 3b that can be opened from the inspection chamber 8 is provided on one side. 3c is a water drain hole. and,
Inside this relay tank 3, a bellows pipe portion 20a made of rubber or the like of an exhaust pipe 20 is arranged. One end of the exhaust pipe 20 is connected to an indoor exhaust port 21, the other end is connected to a lower part of the outdoor exhaust port 9, and a motor fan 22 is installed in the portion located inside the underground inspection room 8. has been done.

The suction hole 7 has a vertical frame 7a having a U-shaped cross section on the outside surface side of the foundation frame 1a of the building 1 and the outer wall 1c continuous thereto.
The vertical frame 7 is arranged such that its lower half is located underground and its upper half protrudes about 1 m above the ground.
The lower end of the container a is fitted into a receiving frame 7c buried underground, and a drain hole 7d is provided at the bottom. The lower part of the intake hole 7 and the air supply relay tank 3 are communicated by an outside air introduction pipe 23a made of hard polyvinyl chloride or the like and piped underground. In order to increase the heat exchange between the outside air flowing inside the pipe 23a and the geothermal heat, the outside air introduction pipe 23a is arranged in a bent manner so as to take as long a path as possible underground of the building 1, as shown in FIG. 4. In addition, outside air is introduced into the lower part of the intake hole 7, made of hard polyvinyl chloride, etc., with one end connected to the ventilation port 19a of the kitchen _A1 without going through the heat exchange chamber 2, as shown in FIGS. tube 2
The other end of 3b is connected for communication. The air outlet 19a is installed near the ventilation fan 24 in the kitchen _A1 , and an electric or manual damper 2 is installed inside.
5.

The outdoor exhaust port 9 has almost the same configuration as the intake hole 7, and has a vertical frame 9a with a U-shaped cross section on the outdoor side of the foundation frame 1a of the building 1 and the outer wall 1c that is continuous with the foundation frame 1a. The vertical frame 9a is located underground and is arranged so that its upper half protrudes above the ground, and an umbrella body 9b having a rainproof and insect-proof function is attached to the upper end of the vertical frame 9a, and the lower end is fitted into a receiving frame 9c buried underground. The water drain hole 9d is provided at the bottom.

The soil 20 directly under and around the building 1 may be natural soil before the building 1 is located, or earth and sand, chestnut stone, gravel, etc. transported from elsewhere, but volcanic ash or volcanic ash soil is particularly preferred as having excellent geothermal absorption and heat storage effects. is suitable.

5 to 7 show structural examples of the heat absorption part 6 for exhaust heat exchange provided in the smoke stack 5a of the stove 5. As shown in the figure, the heat absorbing part 6 seals the upper part of a space 30 formed between a double cylinder 27 made of an extruded material of aluminum or its alloy, and an outer cylinder part 27a and an inner cylinder part 27b. The annular cover plate 28 and the annular plug body 29 that seals the lower part are fitted onto the outside of the smoke exhaust pipe 5a. And the exterior part 2 of the double cylinder 27
7a and the inner cylinder part 27b are integrated by a plurality of longitudinally continuous partition walls 27c equally spaced in the circumferential direction, and the inner cylinder part 2
A plurality of longitudinally continuous strips 27d separating the inner surface of the smoke evacuation pipe 7b from the outer surface of the smoke exhaust pipe 5a are protrudingly provided so as to be equally spaced in the circumferential direction. Further, a flat portion 27e extending in the longitudinal direction is formed on one side surface of the outer cylinder portion 27a, and fluid circulation pipes 13a and 13b communicating with the space 30 are provided on both sides of the partition wall portion 27c located on the flat portion 27e. At least one of the upper and lower portions of the connected partition wall portions 27c at other positions are cut. Therefore, the space 3 from the circulation pipe 13b
The fluid such as water that has flowed into the pipe 0 sequentially passes through the C-shaped heat absorption part 6 in top view over the partition part 27c, and in this process is heated by the hot air of the waste gas flowing in the smoke exhaust pipe 5a, and reaches a high temperature. and flows out from the circulation pipe 13a. A baffle plate 31 having small holes 31a is fixed inside the smoke exhaust pipe 5a in order to suppress the flow rate of waste gas and increase heat exchange efficiency.

In the outside air introduction device configured as described above, in winter, the outside air flowing in through the intake hole 7 is passed through the outside air introduction pipe 23.
In the process of passing through a, the air first exchanges heat with geothermal heat to raise its temperature, and then flows into the supply air relay tank 3. Here, the outside air is further warmed by the geothermal heat and the exhaust heat from the exhaust pipe 20, and then flows into the heat exchange chamber 2 from the ventilation pipe 17, where it exchanges heat with the waste gas from the stove 5, increasing the temperature of the heat pipe 10. A ventilation fan that exchanges heat with the fluid flowing inside and flows into the downstairs and upper rooms A and B from the ventilation opening 19 through the outdoor distribution piping 18 as warm air that has been further heated, and is installed in the ventilation fan 24 and other parts. (not shown), the dirty air inside the room is discharged outdoors, and as a result, heating and ventilation are performed at the same time. In addition, excess heat in the heat exchange chamber 2 is transferred to the heat insulating layer 1.
Heat is stored in the dirt floor concrete 1c from the top surface without zero, thereby heating the downstairs room A from the floor side as well.

On the other hand, in a room where the air is particularly susceptible to dirt, such as the kitchen _A1 , outside air exchanges heat with geothermal heat through the air inlet 7 through the outside air introduction pipe 23b, and then flows in through the air outlet 19a. Because they are located close to each other, ventilation is performed by exchanging heat with the exhaust gas and cooling the exhaust gas without significantly lowering the indoor temperature. The degree of ventilation can be adjusted by changing the degree of opening of the damper 25 of the air outlet 19a, and the ventilation can also be stopped by closing the damper 25. In this case, the rising power of the outside air itself, which has been heated and lightened through heat exchange, the suction power of the ventilation fan 24 and ventilation fans (not shown) installed in other parts, and the ventilation fans installed in the ventilation ports 19 and 19a. The suction force caused by the suction force causes a suction action in the intake hole 7, and the outside air is continuously introduced.

In addition, in the summer, instead of stopping the stove 5, the low-temperature groundwater sucked up by the water pump 14b is continuously sent to the fluid circulation pipe 13b through the introduction pipe 15a, and the groundwater that has passed through the heat exchange chamber 2 is transferred to the drain pipe. It is discharged from 15b. Further, the exhaust motor fan 22 by the exhaust hole 20 is turned off and stopped. In this case, the outside air flowing in through the intake hole 7 exchanges heat with the geothermal heat maintained at a lower temperature than the outside air temperature during the process of passing through the outside air introduction pipe 23a and the air supply relay tank 3, and is further lowered in temperature inside the heat exchange room 2. The air is cooled by heat exchange with low-temperature groundwater, and is discharged as cold air from the air outlet 19 through the outdoor distribution pipe 18 to cool and ventilate the rooms A and B on the lower and upper floors.

In this invention, instead of providing the intake hole 7 along the building 1 as in the above-mentioned embodiment, for example, as shown in FIG. The intake hole 7' may be provided by burying it underground. In the figure, 7b' is an umbrella body having a rainproof and insect-proof function attached to the upper end of the cylinder 7a', and 7c' is a receiving frame buried underground and fitted onto the lower end of the cylinder 7a'. Furthermore, in the present invention, the smoke stack may be attached to a combustion type heating equipment other than a stove, such as a fireplace. Furthermore, the structures of the heat exchange chamber 2, the heat absorption section 6 for exchanging exhaust heat, the outdoor exhaust port 9, etc. can also be modified in various ways.

(Effects Unique to the Invention) According to the present invention, in winter, outside air is heat-exchanged with geothermal heat, indoor exhaust heat, and exhaust heat from the flue gas stack, and is introduced into the building as warm air.
Ventilation and heating are performed at the same time, and the existing heat source is used extremely effectively to raise the temperature of the introduced outside air, eliminating the need for a special heat source, significantly reducing heating costs, and contributing to energy savings. Furthermore, as the temperature of the introduced outside air increases through heat exchange, it becomes lighter and circulates as an ascending air current, so a special forced introduction device for introducing outside air can be omitted. Furthermore, the device of the present invention can be suitably used for air conditioning in the summer and ventilation throughout the seasons.

[Brief explanation of drawings]

The drawings show an embodiment of the outside air introduction device of the present invention, and FIG. 1 is a schematic vertical cross-sectional view of the whole, FIGS. 2 and 3 are longitudinal cross-sectional views of the same essential parts, and FIG. 4 is a vertical cross-sectional view of the same essential parts. , FIG. 5 is a partially cutaway side view showing the heat absorption part for exhaust heat exchange, FIG. 6 is a cross-sectional view taken along the - line in FIG. 4, and FIG. 7 is a cross-sectional view taken along the same line. , FIG. 8 is a longitudinal sectional view showing another example of the configuration of the intake hole. 1...Building, 2...Heat exchange room, 3...Air supply relay tank, 5a...Smoke stack, 6...Exhaust heat exchange heat absorption part, 7, 7'...Intake hole, 9...Outdoor exhaust mouth, 1
2...Heat pipe, 13a, 13b...Fluid circulation pipe, 18...Outside division pipe, 20...Exhaust pipe, 23a...Outside air introduction pipe.

Claims (1)

[Claims] 1. A heat exchange room equipped with heat pipes and a supply air relay tank connected to the heat exchange room are provided in the basement of the building, and a heat absorption part for exhaust heat exchange is provided in the smoke exhaust pipe installed inside the building, and the While connecting the above heat pipe with a fluid circulation pipe, an intake hole is formed with an upper part open to the outside air and a lower part located underground, and the lower part of the intake hole and the relay tank are connected underground. In addition to communicating with the installed outside air introduction pipe,
A device for introducing outside air into a building interior, which includes an exhaust pipe from inside the building via the relay tank to the exhaust port, and a plurality of outdoor distribution pipes communicating between the heat exchange room and the building interior. .