JPH0210350B2 - - 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.

(Conventional technology) Generally, during the winter in cold regions, heating equipment such as stoves is installed indoors, but a significant portion of the heat generated is effectively used outdoors as combustion waste gas through the smoke stack. Generally, the indoor part of the smoke stack is lengthened for the purpose of utilizing waste heat, but the effect is small. 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 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, the outside air introduction device into a building according to the present invention includes a heat exchange room equipped with a heat pipe in the basement of the building and an air supply with fins communicating with the heat exchange room. In addition to providing a relay tank, a heat absorption part for exhaust heat exchange is provided in the smoke exhaust pipe installed inside the building, and the heat absorption part and the heat pipe are connected by a fluid circulation pipe, while the upper part is connected to outside air. The lower part of the intake hole is open to the ground and the lower part is located underground, and the lower part of the intake hole and the above-mentioned relay tank are connected to each other by an outside air introduction pipe placed underground, and the heat exchange room and the building interior are connected. It has a configuration in which a plurality of external pipes are arranged to communicate with the outside.

(Function) In the above configuration, the outside air introduced from the intake hole first passes through the outside air introduction pipe and the air supply relay tank, and in the winter, the temperature increases by exchanging heat with the geothermal heat, which is always maintained at a higher temperature than the outside air temperature. After that, it flows into the heat exchange chamber. In this heat exchange chamber, the high-temperature fluid that has exchanged heat with the waste gas passing through the flue gas exchanges heat with the introduced outside air as it flows through the heat pipe, and as a result, the introduced outside air becomes warm air whose temperature has further increased. It is introduced into each room of the building through external pipes,
Heating and ventilation are performed 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 3, 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 on the inside of this 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.

The heat exchange chamber 2 has a heat insulating layer 9 whose peripheral side and bottom are mainly made of synthetic resin foam such as urethane foam.
The surface of the heat insulating layer 9 facing the underground inspection room 8 constitutes a removable inspection port 2a, and a drain hole 2b is provided at the bottom. A heat exchange tank 10 made of synthetic resin or metal, preferably glass fiber reinforced plastic (FRP), is installed inside the heat exchange chamber 2, and a heat pipe 11 made of stainless steel or the like is installed inside the heat exchange tank 10. Both ends of this heat pipe 11 are fluid circulation pipes 12a and 12b made of stainless steel or the like on the inlet side and the outlet side.
is connected to the heat absorbing section 6 for exhaust heat exchange to form a fluid circulation path, and the pump 1 provided in the middle of the introduction side fluid circulation pipe 12a is connected to the heat absorption section 6 for exhaust heat exchange through the fluid circulation path.
Fluid is circulated through 3a. 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 12a on the outlet side has a groundwater introduction pipe 14a.
However, there is a drain pipe 1 in the fluid circulation pipe 12b on the introduction side.
4b are connected to each other via valves 15, and the groundwater introduction pipe 14a is connected to a groundwater pump 13b installed outdoors.

On the other hand, at the bottom of the heat exchange tank 10,
The upper end of a ventilation pipe 16 that communicates the interior with the air supply relay tank 3 protrudes. Furthermore, one end of each of a plurality of external distribution pipes 15 made of hard polyvinyl chloride or the like is connected to the heat exchange tank 10, and the other ends of each of these distribution pipes 17 are connected to the rooms A and B in the downstairs and upper floors.
It is connected to an air outlet 18 installed in the. still,
A ventilation fan may be attached to these ventilation ports 18.

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.

The suction hole 7 has a vertical frame 7a with 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.
An umbrella body 7b having a rainproof and insect-proof function is attached to the upper end of the umbrella 7a, and the lower end thereof 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 19a 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 19a and the geothermal heat, the outside air introduction pipe 19a is arranged in a curved manner so as to take as long a path as possible underground as shown in FIG. 3. In addition, outside air is introduced into the lower part of the intake hole 7 by a material such as hard polyvinyl chloride, which connects one end to the air outlet 18a of the kitchen _A1 without going through the heat exchange chamber 2, as shown in FIGS. 2 and 3. The other end of the pipe 19b is connected for communication. The fast air outlet 18a is installed near the ventilation fan 20a in the kitchen _A1 , and is equipped with an electric motor or damper 21 inside. 20b is a ventilation fan installed in another room.

The soil 22 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.

4 to 6 show structural examples of the exhaust heat exchange heat absorption section 6 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 the space 26 formed between the double cylinder 23 made of extruded aluminum or its alloy, and the outer cylinder part 23a and the inner cylinder part 23b. It consists of an annular cover plate 24 and an annular plug body 25 that seals the lower part thereof, and is externally fitted onto the smoke exhaust pipe 5a. The exterior part 23a and the inner cylinder part 23b of the double cylinder 23 are integrated at a plurality of longitudinally continuous partition walls 23c arranged equally in the circumferential direction. A plurality of longitudinally continuous strips 23d that separate the inner cylinder portion 23b, the inner surface, and the outer surface of the smoke exhaust pipe 5a are protruded and equally spaced in the circumferential direction. Further, a flat portion 23e extending in the longitudinal direction is formed on one side surface of the outer cylinder portion 23a, and fluid circulation pipes 12a and 12b communicating with the space 26 are provided on both sides of the partition wall portion 23c located on the flat portion 23e. At least one of the upper and lower portions of the connected partition wall portions 23c at other positions are cut. Therefore, fluid such as water flowing into the space 26 from the circulation pipe 12b sequentially flows through the partition wall 23c.
The waste gas passes through the C-shaped absorption section 6 when viewed from above, and in this process is heated by the hot air of the waste gas flowing in the smoke exhaust pipe 5a, becomes high temperature, and flows out from the circulation pipe 12a. A baffle plate 27 having small holes 27a is fixed inside the smoke exhaust pipe 5a in order to suppress the flow velocity of the exhaust 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 transferred to the outside air introduction pipe 1.
9a and the supply air relay tank 23, it exchanges heat with geothermal heat and rises in temperature, flows into the heat exchange room 2 through the ventilation pipe 16, where it exchanges heat with the waste gas from the stove 5, and becomes high temperature. It exchanges heat with the fluid flowing in the heat pipe 11, and then flows as heated warm air through the outdoor distribution pipe 17 into the downstairs and upstairs rooms A and B through the air outlet 18, and is also heated by the ventilation fans 20a,
Dirty indoor air is discharged outdoors from 20b,
The result is heating and ventilation at the same time. In addition, surplus heat in the heat exchange room 2 is stored in the earthen floor concrete 1c from the upper surface without the heat insulating layer 9, 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 outside air introduction pipe 19b from the intake hole 7, and then flows in through the air outlet 18a. 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 reducing the indoor temperature. In addition, the degree of ventilation is
It can be adjusted by changing the degree of opening of the damper 21 of 8a, and ventilation can be stopped by closing the damper 21.

In this case, the air intake hole is operated by the rising force of the outside air itself, which has been heated and lightened by heat exchange, the suction of the ventilation fans 20a and 20b, and the suction force when the ventilation fan is attached to the ventilation openings 18 and 18a. At 7, a suction action occurs and outside air is continuously introduced.

In addition, in the summer, instead of stopping the stove 5, low-temperature groundwater sucked up by the water pump 13b is continuously sent to the fluid circulation pipe 12b through the introduction pipe 14a, and the groundwater that has passed through the heat exchanger 2 is sent to the drain pipe 14b. Emit more. in this case,
The outside air flowing in through the intake hole 7 passes through the outside air introduction pipe 19a and the air supply relay tank 3, exchanging heat with the geothermal heat that is maintained at a lower temperature than the outside temperature, and lowering the temperature. The air is cooled by exchanging heat with groundwater, and is discharged as cold air from the air outlet 18 through the outdoor division piping 17, thereby cooling and ventilating the downstairs and upstairs rooms A and B.

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 exhaust pipe may be attached to other combustion type heating equipment other than the stove, such as a fireplace, and the structure of the heat exchange chamber 2 and the heat absorption part 6 for exchanging heat can be changed in various ways. It is.

(Effects Unique to the Invention) According to the present invention, in the winter, outside air is introduced into the building as warm air by exchanging heat with the geothermal heat transmitted to the outside air introduction pipe and the finned air supply relay tank and the exhaust gas from the flue gas stack. Ventilation and heating are performed at the same time, and the existing heat source is utilized to the maximum extent 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, in which FIG. 1 is a schematic longitudinal sectional view of the whole, FIG. 2 is a longitudinal sectional view of the essential parts, and FIG. 3 is a plan view of the essential parts. Figure 4 is a partially cutaway side view showing the heat absorption part for exhaust heat exchange;
5 is a cross-sectional view taken along the line - in FIG. 4, FIG. 6 is a cross-sectional view taken along the same line, and FIG. 7 is a longitudinal cross-sectional view showing another example of the structure of the intake hole. 1...Building, 2...Heat exchange room, 3...Air supply relay tank, 3a...Fin, 5a...Smoke stack, 6...
...Exhaust heat exchange heat absorption part, 7, 7'...Intake hole, 11
...Heat pipe, 12a, 12b...Fluid circulation pipe, 17...Outside division piping, 19a...Outside air introduction pipe.

Claims (1)

[Claims] 1. A heat exchange room equipped with a heat pipe and a supply air relay tank with fins are installed in the basement of the building, and an air supply relay tank with fins is installed in the basement of the building, and a heat absorption section for exhaust heat exchange is installed in the smoke exhaust pipe installed inside the building. and the heat pipe are connected by a liquid circulation pipe, and an intake hole is formed in which the upper part is open to the outside air and the lower part is located underground, and the lower part of the intake hole and the relay tank are connected to the ground. Connected through an outside air introduction pipe installed inside,
An apparatus for introducing outside air into a building interior, which includes a plurality of outside distribution pipes that communicate the heat exchange room and the building interior.