JP4944265B1 - Air conditioner and air circulation system of building using the same - Google Patents

Abstract

【Task】
Provided is an air conditioner that is excellent in thermal efficiency without using a large amount of groundwater, and that can perform temperature / humidity control and air purification of a building while saving energy and reducing environmental load.
[Solution]
A substantially cylindrical heat exchange tank 21 that stores cold water or hot water at a predetermined temperature, and a double tube structure that includes an outer tube 22 and an inner tube 23 that are coaxially provided at the center of the heat exchange tank. The indoor air supplied to the air flow path formed between the outer tube and the inner tube of the double tube structure is discharged into the inner tube after heat exchange with cold water or hot water in the heat exchange tank. Thus, the air conditioner 20 was configured.
[Selection] Figure 3

Description

  The present invention relates to an air conditioner that performs heating / cooling, cleaning, dehumidification / humidification, etc., of air introduced into a room in a living environment such as a general house, and a building air circulation system using the same.

Greenhouse gas emissions are increasing on a global scale. On the other hand, in Japan, the industrial sector has been on a downward trend, but emissions from the civilian sector have increased by 44% over the 15 years since 1990.
In recent years, energy savings such as solar power and wind power generation are progressing, but even if we are used to living environments that are too blessed and think that improvement of the global environment is necessary, it is difficult to take effective measures. Is the current situation.
On the other hand, conventionally, an air circulation system has been proposed in which natural energy such as groundwater and geothermal heat is used as a heat source to reduce the amount of energy consumed for air conditioning. For example, in Patent Document 1 (Japanese Patent Laid-Open No. 2000-97586), an underground pipe serving as a heat exchanger is embedded, and water is circulated between the heat source equipment (heat pump) of an air conditioner installed on the ground and the pipe. In the ground where underground pipes are buried, the temperature is maintained at around 15 ° C throughout the year, so in summer, the underground pipes are connected via underground pipes. The cooled air is introduced into the room, and in the winter, heated air is introduced into the room.

JP 2000-97586 A

However, in the above-mentioned geothermal air conditioning system, since underground pipes buried in the ground are used as a geothermal exchanger, there is a problem that the efficiency of heat exchange between geothermal and water is poor.
To solve this problem, it may be possible to circulate more water and increase the thermal efficiency by burying pipes deep in the ground or using large-diameter pipes. The necessity arises and there existed a fault that the reduction effect of energy consumption fell as a result.
In addition, cleaning such as dust removal in the air and dehumidification in the building cannot be performed, and various problems remain.

The present invention has been made in view of the above circumstances, and provides an air conditioner that is highly efficient without using a large amount of groundwater, and while using natural energy and reducing the environmental load, the temperature and humidity in the building An object is to provide an air conditioner capable of performing control, air purification, gradual humidification, and the like.
Another object of the present invention is to provide a building air circulation system using the air conditioner.

(1) The air conditioner of the present invention, which has been made to solve the conventional problems,
A substantially cylindrical heat exchange tank for storing cold water or hot water at a predetermined temperature;
A double-pipe structure comprising an outer tube and an inner tube that are erected coaxially in the center of the heat exchange tank ;
On the ground ,
The introduced air supplied to the air flow path formed between the outer tube and the inner tube of the double tube structure,
Heat exchange with cold water or hot water in the heat exchange tank ,
While cleaning the introduced air by contacting the inner wall surface of the outer tube and the bottom of the outer tube , and discharging it into the inner tube ,
Washing water is caused to flow through the air flow path by an outer cylinder pipe cleaning water supply pipe so that dirt attached to the inner wall of the outer cylinder pipe or the bottom plate of the heat exchange tank is cleaned .

(2) In the building air circulation system using the air conditioner of the present invention, the supply source of cold water or hot water in the air conditioner of (1) is groundwater collected from the vicinity of the building, and the air introduced into the building The air conditioner is arranged in series with a temperature control device such as a heat pump provided in an air flow path to which air is supplied.

  According to the present invention, a substantially cylindrical heat exchange tank for storing cold water or hot water at a predetermined temperature, and a double pipe comprising an outer cylinder pipe and an inner cylinder pipe provided coaxially at the center of the heat exchange tank Structure, and heat exchange is performed between the introduced air supplied to the air flow path formed between the outer tube and the inner tube of the double tube structure with cold water or hot water in the heat exchange tank. Since it discharges | emits toward a pipe | tube, it can operate economically, without using a lot of groundwater, and can provide the air conditioning apparatus excellent in thermal efficiency.

It is explanatory drawing of the air circulation system of the building using the air conditioner which concerns on the Example of this invention. It is a top view of the building in which the air-conditioning circulation system using the air conditioner of an Example is applied. It is outline explanatory sectional drawing of the air conditioner of an Example. (A) is a top view of the upper stage part of the air conditioner of an Example, (b) is a top view of the lower stage part of the air conditioner of an Example.

  The air conditioner according to the present embodiment includes a substantially cylindrical heat exchange tank for storing cold water or hot water at a predetermined temperature, and an outer cylinder pipe and an inner cylinder pipe provided coaxially at the center of the heat exchange tank. A double-pipe structure, and heat exchange is performed between the introduced air supplied to the air flow path formed between the outer tube and the inner tube of the double-pipe structure with cold water or hot water in the heat exchange tank. Discharge into the inner tube. As a result, by using groundwater that is constant at 15 to 17 ° C throughout the year at a depth of 10m to 100m, the house is made cooler in summer and warmer in winter, and air is purified and humidity is adjusted. Effective use of energy can be realized, and a healthy and comfortable living according to the needs of the times can be realized.

  The air conditioner is a device for maintaining the indoor space in a comfortable environment corresponding to the hot and humid state in summer and the low temperature dry state in winter. The air temperature, humidity and cleanliness in the space are within the desired range. It has a function to adjust. In order to adjust the cleanliness and humidity of the air, generally, various filters, humidification mechanisms, and the like can be used in combination.

A heat exchange tank is a tank for storing cold water or hot water such as ground water that can be collected in the vicinity of a building, and a metal or plastic tube whose outer wall is covered with a heat insulating material such as glass wool or urethane foam is used. it can.
The heat exchange tank is equipped with instruments such as a water level gauge and a water temperature gauge for managing cold water or hot water stored in the tank, as well as a supply pipe for ground water to be taken into the tank and a discharge pipe for cold water or hot water in the tank. And a control valve and an on-off valve for controlling these flow rates can be provided.

  The double-pipe structure is a pipe-like structure composed of an outer cylinder pipe and an inner cylinder pipe provided coaxially in the center of the heat exchange tank, and cold water or hot water stored on the outer periphery of the outer cylinder pipe Heating / cooling effect that maintains the air at a predetermined temperature by exchanging heat (such as groundwater with a water temperature of about 15 ° C. throughout the year) with the introduced air flowing through the gap (air channel) between the outer tube and the inner tube In addition, an air cleaning effect for removing dirt in the introduced air by adhering to the inner wall of the outer tube or absorbing it in the accumulated water is provided.

  The air and groundwater supplied to or discharged from the heat exchange tank and the double pipe structure are transported via a fan unit constituting the air circulation system and a groundwater pump, and the air flow and water flow of the entire building. The fan unit, the pump, each control valve, and the like are controlled by a control unit that manages the above.

In the air conditioner of the present embodiment, the intake air taken in from the ceiling or the like in the building is cooled or heated by the cold water or hot water, and is collected on the inner wall surface of the outer cylinder tube or the bottom of the outer cylinder tube (reserved water) It is possible to provide a discharge pipe at the bottom of the double-pipe structure that takes in dirt in the introduced air by bringing it into contact with the water surface and discharges it to the outside together with the drainage of the accumulated water.
As a result, the introduced air is circulated at a predetermined flow rate (for example, a flow rate of 2.65 m / sec) downward in the gap (air flow path) between the outer tube (for example, 250 mmφ) and the inner tube (150 mmφ) of the heat exchange tank. Thus, dust, dust, pollen and the like contained in the introduced air can be discharged together with the accumulated water accumulated in the lower part of the pipe having the double pipe structure, and the air introduced into the room can be purified.

Furthermore, the building air circulation system of the present embodiment uses ground water or cold heating drainage collected from the vicinity of the building as a supply source of cold water or hot water in the air conditioner, and an air flow supplied with indoor air in the building The air conditioner is arranged in series on a temperature control device such as a heat pump provided on the road.
As a result, it is possible to achieve free air conditioning excellent in economic efficiency by combining the use of a heat pump or the like while effectively taking in the warm air in the winter on the roof surface of the building and the cold air in the summer. Thereby, it becomes possible to keep the inside of a building in a comfortable environment.
The air conditioner can also be used as a spot cooler in a factory or the like.

The air circulation system can be applied as an air conditioning system in a building, and the structure of the building can be any of a wooden structure, a steel structure, an RC structure, and the like. Examples of buildings include general houses, various facilities, stores, and offices.
Such an air circulation system can be installed anywhere on a legally constructable site, but it is desirable that groundwater can be used on or around the site.

Example 1
Hereinafter, a building air circulation system using an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.
Drawing 1 is an explanatory view of the air circulation system of the building using the air conditioner of an example. The building air circulation system 10 using the air conditioner 20 is applied to a building 11 such as a general house, as illustrated. A thermal storage sand layer 12 is disposed on the ground which is the lower floor portion of the building 11. Inside the heat storage sand layer 12, a groundwater pipe 13 for flowing the groundwater pumped from the well through the heat exchange tank and the cold / hot water heat exchanger 18 is buried in a zigzag manner in the heat storage sand layer 12. Has been.

  The building 11 has a two-story structure in which an attic space is provided on the ceiling portion thereof, and includes a roof structure having a structure called a so-called laver 11a and an attic air supply / exhaust structure 14, and a predetermined number of floor surfaces on the first and second floors. Floor air outlet 15 for supplying indoor air to the room, and a ceiling exhaust port 16 provided on each ceiling surface for exhausting room air.

  The thermal storage sand layer 12 is formed by laying river sand or the like under the floor to a thickness of 60 cm. Inside this thermal storage sand layer 12, polybutene pipes (with a diameter of 16 mm) are piped in a zigzag pattern at a pitch of 60 cm as shown in the plan view of FIG. Further, an air supply pipe (vu 200 mmφ) is provided in an intermediate portion of the heat storage sand layer 12.

The so-labless 11a has been conventionally employed as a “ventilation method” as a method for preventing hot air generated by solar heat on the wall surface and roof surface of a building during the summer from entering the building. This method can also be adopted in this embodiment, and when the temperature of the roof surface during the daytime (usually galvanized by a galver steel plate), that is, the temperature in the saw labless 11a rises in the winter, as shown in FIG. Is forcibly sucked into the building by the pipe fan 14b. In summer, cold air from night radiant cooling is also sucked into the building.
These controls are performed by the collecting pipe unit 17 installed in the back of the hut via a temperature sensor.

The attic air supply / exhaust structure 14 is provided with a saw labless damper 14a for discharging a part of air taken in from the roof surface to the outside and a pipe fan 14b for sucking air into the attic. A collecting pipe unit 17 for taking in air sucked by the fan 14b and air from the ceiling exhaust port 16 is provided.
The air taken in through the collecting pipe unit 17 is supplied to an air supply pipe of an air conditioner, which will be described later, and after being subjected to a predetermined heat exchange process and a cleaning process, the air discharged from the exhaust pipe is discharged into the floor. The air is circulated in the building 11 by being blown out from the air outlet 15 into the room.

In the building air circulation system 10 (the air circulation system shown in FIGS. 1 to 4) using the air conditioner of this embodiment, the collective pipe unit 17 in the attic is configured to use the air in the second floor and the third room and the air in the attic. Through the cycle duct 17a, the air cycle damper 17b is passed (because this system 24 hour ventilation is used together, it is necessary to take in the outside air for a necessary time based on the ventilation amount calculation), and is sent to the fan unit 17c.
The air cycle damper 17b is connected to the outside air intake port 17d, and a predetermined amount of outside air can be taken in by operating the air cycle damper 17b as necessary.

A gap (air flow path) S between the outer tube 22 and the inner tube 23, which is disposed in the exchange tank 21 of the air conditioner 20, descends from a vent hole 23 a opened in the lower portion of the inner tube 23. The sucked air A flows in the upward direction U through the inner tube 23, and is supplied to the cold / hot water heat exchanger 18 (after that, when it is desired to increase the cooling / heating effect, the heat pump 19 is installed in series and passed through this). It flows through an air supply pipe 15a buried under the floor.
Next, cool air (summer) and warm air (winter) are blown out from the floor outlet 15 from the floor outlet 15 and discharged to the attic through the ceiling suction port 16 and the floor air outlet on the second floor.
Such means for circulating the air in the building 11 from under the floor to the attic can be obtained by a sirocco fan (100V-150W effective displacement 600 m <3> / H) installed in the fan unit 17c.

Here, the air conditioner 20 is a device for exchanging heat of the air introduced through the collecting pipe unit 17 disposed in the attic of the building 11 with groundwater having a substantially constant water temperature throughout the year.
Furthermore, the dirt in the introduction air is taken in contact with the water surface of the water (accumulated water W) collected at the bottom of the outer tube 22 and dust, dust, smell, pollen, etc. contained in the introduction air are removed. It is also an apparatus for taking in the accumulated water W, purifying the air, and adjusting the temperature.
In this embodiment, a heat pump 19 is provided in series in addition to the cold / hot water heat exchanger 18 of the air conditioner 20, thereby further adjusting the temperature of the air cleaned and air-conditioned by the air conditioner 20. It responds flexibly to seasonal temperature fluctuations.

As shown in FIGS. 3 and 4, the air conditioner 20 is installed in a coaxial manner at the center of the heat exchange tank 21, which is called a cis tank, having a predetermined temperature of cold water or an internal diameter of 350 mm for storing hot water. The main body 20a of the air conditioner 20 is provided with a double pipe structure comprising an outer cylindrical tube 22 having an outer diameter of 250 mm and a thickness of approximately 10.5 mm and an inner cylindrical tube 23 having an outer diameter of 150 mm and a thickness of approximately 5.5 mm. .
The heat exchange tank 21 is a substantially cylindrical metal container with a bottom, and its outer surface is preferably covered with a heat insulating material such as glass wool, and is insulated from the surrounding indoor air.
A water level gauge 24, an overflow pipe 21e, and the like can be provided as necessary in order to hold a predetermined amount of groundwater at a predetermined temperature in the heat exchange tank 21.

A predetermined amount of cold water or hot water held in the heat exchange tank 21 is supplied from a groundwater source such as a well through a water supply pipe 21a provided in the upper part of the tank, and is supplied to a heat exchanger introduction pipe 21b provided in a tank bottom plate 21c. It is transferred to the cold / hot water heat exchanger 18 or drained to the outside via the drain pipe 21d.
In addition, an open / close valve and a flow rate control valve can be provided in each pipe line of the water supply pipe 21a and the heat exchanger introduction pipe 21b connected to the groundwater source in the vicinity of the building 11 as necessary.
This makes it possible to efficiently form a predetermined intermittent or continuous groundwater flow in the heat exchange tank 21 based on the data of a measuring instrument that detects the water temperature and water level in the tank, Control operations of these on-off valves and the like can be performed by a control device such as a computer.

The upper part of the gap (air flow path) S between the outer tube 22 and the inner tube 23 and the heat exchange tank 21 is opened to the upper part of the main body 20a of the sealed air conditioner 20, and the respective lower ends are The tank bottom plate 21c is sealed in a watertight state.
At the upper part of the main body 20a of the air conditioner 20, an exhaust pipe 20b in which the upper end of the inner tube 23 is curved and formed through the side wall is disposed, and air supplied to the collecting pipe unit 17 is supplied to the tank. An air supply pipe 20c for introduction into the upper part of the main body 20a is provided.
In addition, at the lower end of the inner cylinder pipe 23 close to the tank bottom plate 21c, three upper, middle and lower vent holes 23a are provided on both surfaces of the inner cylinder pipe, and a gap (air) between the outer cylinder pipe 22 and the inner cylinder pipe 23 is provided. The air A descending the flow path S flows into the inner cylinder tube 23 from the outside to the inside through the vents 23a, and the upward flow of the air exchanged and cleaned in the inner cylinder tube 23. U is formed.
The upper part of the inner tube 23 is connected to the exhaust pipe 20b on the upper part of the main body 20a so that the air treated by the air conditioner 10 is supplied to the cold / hot water heat exchanger 18 and the heat pump 19.

A sewage discharge part 25 for absorbing dirt in the introduced air and discharging the dirty pool water W is provided at the bottom of the outer cylinder pipe 22 and the inner cylinder pipe 23 sealed with the tank bottom plate 21c. The accumulated water W at the water level exceeding the upper end of the U-shaped pipe is discharged to the outside through the U-shaped pipe 25a for draining arranged in an inverted U-shape.
The air conditioner 10 is in the form of a triple pipe structure composed of a heat exchange tank 21, an outer tube 22, and an inner tube 23. The pipe forming the heat exchange tank 21 uses a VU of 350 mmφ, and groundwater is used. Acts as a storage tank for storage.
The intermediate pipe forming the outer tube 22 is of vu 250 mmφ, and the inner pipe forming the inner tube 23 is of VU 150 mmφ, and the inner tube 23 is sucked by the fan of the fan unit. Air (U) flows upward, and in the outer tube 22, air passing through the pipe chamber flows downward (A).
Further, the bottom of the triple pipe composed of the heat exchange tank 21, the outer tube 22, and the inner tube 23 is kept watertight by a tank bottom plate 21c.
The accumulated water W at the bottom of the outer tube 22 and the inner tube 23 sealed by the tank bottom plate 21c is naturally drained through a U-shaped pipe 25a for draining water.
Further, the cleaning water is periodically flowed into the gap (air flow path) S via the outer cylinder pipe cleaning water supply pipe 21f so as to clean the dirt adhering to the inner wall of the outer cylinder pipe 22 and the tank bottom plate 21c. It has become.

As described above, the air conditioner 20 of the present embodiment and the air circulation system 10 of the building using the air conditioner 20 are maintained at a constant temperature regardless of the season, and have a depth of 10 m to 100 m (the depth of 30 m or more is combined with domestic water). By using this groundwater to take in this natural energy into the house and living environment, it is possible to realize a comfortable and healthy living life with energy saving that meets the needs of the times.
That is, by taking the groundwater into the air circulation system 10 and using it, the house can be cool in summer and warm in winter, and the purified air can be purified and the temperature and humidity can be adjusted.
Further, from the roof surface, warm air in winter and cold air in summer can be taken in and combined with the combined use of the heat pump 19, further enabling free air conditioning.

  Thus, the air circulation system of the present embodiment having an air adjustment function that can cool indoor air in summer, warm in winter, and perform air purification includes an air conditioner 20 having a heat exchange tank 21. And (A) a heat exchange function, (B) an air cleaning function, and (C) a humidity adjustment function shown below.

That is,
(A) Heat exchange function The air conditioner 20 allows the warm air in summer and the cold air in winter introduced from the air cycle duct 17a to pass between the ground water stored in the outer tank (heat exchange tank 21). Thus, warm air is cold, and cold air has a function to exchange heat warmly.

(B) Air cleaning function The fan unit 17c of the embodiment is driven, and the outer cylindrical tube 22 (intermediate pipe radius: 0.125m) and the inner cylindrical tube 23 (inner pipe radius: 0.075m), which serve as a cis tank of the air conditioner. The air flows through the gap (air flow path) S (A), and dust, dust, pollen and the like in the introduced air are attached to the inner wall of the outer tube 22 and the outer wall of the inner tube 23, and the pipe. Absorb in the bottom pool and clean.

(C) Humidity adjustment function Summer humidity in the atmosphere is around 50% during the day and 80-90% at night. Also, 10-20% during winter days and 50-60% during nighttime are often average humidity during fine weather. The outside air humidity in summer and winter is leveled by passing the outside air through the heat exchange tank 21 and becomes about 60 to 70% in the summer, so that the summer stickiness and winter body are alleviated and comfortable.

Thus, in the air conditioner 20 having the functions (A) to (C) described above, it is necessary to supply groundwater to the thermal storage sand layer throughout the year (except for a period in spring and autumn). In a normal case, it is uneconomical to continuously run the groundwater for heat exchange into the tank because the pump is continuously operated. For this purpose, a heat exchange tank 21 is provided, and the water pressure in this tank is passed slowly through the cold heat exchanger to the pipe of the thermal storage sand layer, and finally discharged into a pond or the like.
Thus, the groundwater can be utilized without waste, and an energy saving effect and an air purification effect can be achieved.

The air circulation system 10 of the building using the air conditioner 20 is not a local air-conditioning / heating which is normally performed, but as shown in FIG. Even if it is open, there is no problem.
The air cycle operates 24 hours a day, 365 days a year (for 24 hours ventilation), so that the floor, walls, ceiling, furniture, etc. in the building are all close to the temperature at which they are blown out from the floor outlets every season. Will keep. That is, all mass objects in the building can be regarded as a heat storage body, and a comfortable and healthy living environment is realized.

The main equipment related to such system installation is a pump, heat pump, etc. in addition to wells necessary as a groundwater source, and the initial installation cost varies depending on the depth, area, capacity, etc. of the water source.
Regarding the running cost, except for the heat pump, a fan unit, an exhaust fan, and the like are the main power consumption sources.
The fan unit fan is equipped with an inverter, and the number of rotations is controlled in four stages, so that energy-saving operation is possible.
Therefore, even if the power consumption of the pump and heat pump is added to this, the running cost can be made extremely economical.

As shown in the embodiments, the present invention lowers or raises the temperature of indoor air introduced to a temperature close to the groundwater temperature through cold water or hot water such as groundwater at a predetermined temperature stored in a heat exchange tank. The air that has been purified by the air conditioner is guided into the building to adjust the air in the room.
This eliminates the need for cooling and heating sources in ordinary air-conditioning equipment, which not only saves energy, but also reduces power consumption and fuel consumption, thus significantly reducing carbon dioxide emissions. Can provide possible building air circulation system.
In addition, according to the present invention, it is possible to provide an air conditioner that is excellent in cost reduction and efficiency while achieving the purification of indoor air, and thus it can be said that the industrial applicability is extremely large.

DESCRIPTION OF SYMBOLS 10 Air circulation system 11 Building 11a Thoroughless 12 Thermal storage sand layer 13 Groundwater pipe 14 Attic supply / exhaust structure 14a Thoroughless damper 14b Pipe fan 15 Floor outlet 15a Intake pipe 16 Ceiling exhaust port 17 Collecting pipe unit 17a Air cycle duct 17b Air cycle damper 17c fan unit 17d outside air intake 18 cold / hot water heat exchanger 19 heat pump 20 air conditioner 20a main body 20b exhaust pipe 20c air supply pipe 21 heat exchange tank 21a water supply pipe 21b heat exchanger introduction pipe 21c tank bottom plate 21d drain pipe 21e overflow pipe 21f outside Tube pipe cleaning water supply pipe 22 Outer cylinder pipe 23 Inner cylinder pipe 23a Vent hole 24 Water level gauge 25 Sewage discharge part 25a U-shaped pipe A Introducing air S Gap (air flow path)
U Upflow of air

Claims (2)

A substantially cylindrical heat exchange tank for storing cold water or hot water at a predetermined temperature;
A double-pipe structure comprising an outer tube and an inner tube that are erected coaxially in the center of the heat exchange tank ;
On the ground ,
The introduced air supplied to the air flow path formed between the outer tube and the inner tube of the double tube structure,
Heat exchange with cold water or hot water in the heat exchange tank ,
While cleaning the introduced air by contacting the inner wall surface of the outer tube and the bottom of the outer tube , and discharging it into the inner tube ,
An air conditioner characterized in that cleaning water is caused to flow through the air flow path by an outer tube cleaning water supply pipe to clean dirt adhered to the inner wall of the outer tube and the bottom plate of the heat exchange tank . A supply source of cold water or hot water in the air conditioner according to claim 1 is groundwater collected from the vicinity of the building, and a temperature adjusting device such as a heat pump provided in an air flow path to which introduction air into the building is supplied A building air circulation system, wherein the air conditioners are arranged in series.