JP2878711B2 - Air-conditioning equipment in wooden houses - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cooling / heating device in a wooden house for performing air conditioning in a wooden house.

(Conventional technology) A conventional air conditioner in a wooden house installs an indoor air conditioner in a room of a wooden house in which a heat insulating material is laid on a floor, a wall, and the like, and the indoor air conditioner directly supplies indoor air to daily life. A method of adjusting to a comfortable set temperature is adopted.

However, in a configuration in which indoor air is directly adjusted to a set temperature by an indoor air conditioner, such as a cooling and heating device in a conventional wooden house, the outside air and the indoor air having a large temperature difference from each other are transmitted through floors, walls, and the like. Due to the close proximity, the temperature gradient between the outside and the room is large, and especially during heating in winter, condensation of some of the water vapor in the indoor air causes condensation on the indoor walls, floor, etc. For,
There are problems such as corrosion of floors and walls.

In order to solve this problem and prevent the occurrence of dew condensation on the indoor wall surface, floor surface, etc.
A cooling and heating device described in JP-A-63-83528 has been proposed.

And this cooling and heating device adjusts and circulates the circulating air in the air circulation path formed under the wall and floor by the main air conditioner to an intermediate temperature between the outdoor temperature and the indoor temperature, and the air circulation path. An auxiliary air conditioner installed on the way adjusts the indoor air to a set temperature that is comfortable for daily life.

(Problems to be Solved by the Invention) However, as in the cooling / heating device described in the above-mentioned conventional Japanese Patent Application Laid-Open No. 63-83528, the circulating air in the air circulation path is changed by the main air conditioner to the outdoor temperature and indoor temperature. In the configuration in which the temperature is adjusted to an intermediate temperature, for example, in the case of heating in winter, when the humidity of the circulating air in the air circulation path is relatively high, part of the water vapor in the circulating air condenses, and the floor, Corrosion of walls and the like may be caused.

Further, in a configuration in which an auxiliary air conditioner configured by a unit type air conditioner using a heat pump is installed in the middle of an air circulation path as in the above-described conventional cooling and heating device, the circulating air exchanges heat with indoor air by the auxiliary air conditioner. The circulation temperature changes, for example, when heating in winter, heat is absorbed from the circulating air being circulated in the auxiliary air conditioner, so that a predetermined intermediate temperature cannot be maintained due to a decrease in the temperature of the circulating air. There is a problem that there is a possibility that a large main air conditioner is required.

The present invention has been made in view of such a point, and can prevent water vapor in humid air from condensing and causing dew condensation,
It is possible to provide a cooling and heating device in a wooden house which can save energy, maintain circulating air at an intermediate temperature between the outdoor temperature and the indoor temperature, and does not require a large-sized outdoor air conditioner. Aim.

(Means for Solving the Problems) The air-conditioning system for a wooden house according to claim 1, wherein the air circulation formed between the outer floor and the outer wall on the side in contact with the outside air and the inner floor and the inner wall on the side in contact with the indoor air. And an outside air intake communicating with the air circulation path, and adjusting the outside air taken in from the outside air intake to an intermediate temperature between the outdoor temperature and the indoor temperature, and using the adjusted outside air as circulating air. An air conditioner for outside air that circulates through the air circulation path, an indoor air conditioner that is installed indoors and adjusts indoor air to a set temperature, an indoor air intake port that is disposed in a ceiling space, and is formed in one of ceiling walls, and A duct communicating with an indoor air outlet formed on the other side of the ceiling wall and forcibly circulating room air near the ceiling wall.

(Action) In the air conditioner in the wooden house according to claim 1, the indoor air is adjusted to the set temperature by the indoor air conditioner installed in the room, and the outside air is cooled by the outdoor air conditioner between the outdoor temperature and the indoor temperature. Temperature, and circulates the adjusted outside air to the air circulation path as circulating air.Therefore, since the circulating air exists between the outside air and the room air, the temperature gradient between the outside, the air circulation furnace, and the room is moderate. And no condensation occurs without condensation of water vapor in the air. In addition, the outside air conditioner has an outside air intake communicating with the air circulation path, and adjusts the outside air taken from this outside air intake.For example, when heating in winter, the humidity of outside air in winter is low, Part of the water vapor in the air does not condense.

Furthermore, since the indoor air conditioner is installed in the room instead of being installed in the middle of the air circulation path, for example, heat is not absorbed from the circulating air being circulated by the indoor air The intermediate temperature of the air is maintained, and the size of the outside air conditioner is prevented from increasing. In addition, since the room air near the ceiling wall is forcibly circulated through the duct communicating the room air inlet and the room air outlet, the temperature distribution in the room can be averaged.

(Example) An example of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is the interior of a wooden house, 2 is the outside of a wooden house, 4 is a refrigerator, a heat pump, etc. for adjusting the temperature and humidity of the outside air and circulating the outside air after the adjustment as circulation air. It is an air conditioner for outside air.

The outside air conditioner 4 includes a circulation path heat exchanger 3, an outdoor heat exchanger 5, a fan 6, and an outside air intake communicating with an air circulation path 7. The air circulation path 7 is, for example, substantially twenty five
It has a width of about 50 mm and is formed by a wall ventilation path 7a and a floor ventilation path 7b.

Next, the floor structure of the wooden house will be described. Support plates 12 made of wood or the like are provided at intervals, and a heat insulating material, for example, a heat insulating glass wool 11 is provided on the support plates 12.
Insulation material that is porous and incombustible to a thickness of about 10 to 12 mm on the insulating glass wool 11
For example, a heat insulating sheet 10 is stretched over the entire surface, and the upper part of the heat insulating sheet 10 is a floor ventilation path portion 7b of the air circulation path 7.

These support plate 12, insulating glass wool 11, insulating sheet 10
The outer floor 12a on the side that comes into contact with the outside air is configured as described above.

Further, floor boards 8 formed of wood for holding tatami or the like are arranged in a space 13 so as to face the floor ventilation path section 7b in the air circulation path 7 with a space 13, and a tatami 9 is laid on the floor board 8. The inner floor 8a on the side that comes into contact with the indoor air with these floorboards 8 and tatami mats 9
Is configured. Numeral 15 indicates the body, and numeral 18 indicates the base.

Next, the wall structure of the wooden house will be described.
Is an inner wall formed of wood or the like on the side that comes into contact with the indoor air, and a sheet-shaped heat insulating sheet 10 and a heat insulating glass wool 11 facing the inner wall 14 with a wall ventilation path portion 7a in the air circulation path 7 interposed therebetween. A wall plate 16 and a mortar wall 17 formed of wood or the like are held vertically.

These wallboards 16, mortar walls 17, insulating glass wool 1
1. The outer wall 16a on the side in contact with the outside air is constituted by the heat insulating sheet 10 and the like.

The operation of the air conditioner in the wooden house as described above during heating in winter is performed as follows.

When the indoor air is set to, for example, 20 to 25 ° C,
Since the outside air inlet 20 provided with the filter 38 and the damper 21 and the final end of the air circulation path 7 are connected to the circulation path heat exchanger 3, outside air (for example, 0 to 5 ° C., relative humidity 20 to 30%)
And the air from the final end of the air circulation path 7 are sucked in from the suction side of the circulation path heat exchanger 3 by the fan 6 and once heated to, for example, 40 to 50 ° C. by heat exchange.

Thereafter, the high-temperature air emits heat to the low-temperature side outside air or the like and moderates the temperature gradient between the outside 2 and the room 1, that is, an intermediate temperature between the outside air temperature and the room air temperature, for example, 10 The state changes to about 15 ° C., and the air is circulated and is discharged through the air circulation path 7 to the left in FIG.

The circulating air at 10 to 15 ° C is partially branched, and the floor ventilation path 7b
Circulates to the wall ventilation path 7a, and a part of the circulated air may flow to the side wall-dedicated heat exchanger. Further, a part of the circulating air is adjusted by the indoor air damper 23 while the indoor air is damped.
Will be released.

At the start of heating, the outside air intake damper 22 and the indoor air damper 23 are closed so as to circulate circulating air in the air circulation path 7. Thereafter, outside air having a low relative humidity is taken in and heated, and the indoor air damper 23 is opened and adjusted. The air circulation path 7 is adjusted so that the static pressure of the fan 6 is applied to the air circulation path 7 so that the pressure does not become negative.

When the outside air is taken in from the outside air intake 20, the damper 21 is opened, the outside air intake damper 22 closes the passage of the air circulation path 7, the room air damper 23 is opened, and the room air outlet is opened.
Open 24. At the start of heating, the outside air intake damper 22 is closed, and the indoor air damper 23 is also closed, so that only the heated hot air can be circulated in the air circulation path 7. Alternatively, the dampers 21 and 22 may be opened without operating the outside air conditioner 4 to allow the outside air to flow through the air circulation path 7 without heating.
The outside air conditioner 4 is switched by a heat pump to send cool air to cool the entire frame of the room softly. Reference numeral 38 denotes a filter, and 37 denotes a heat pipe type heat exchanger provided between the outside air inlet 20 and the indoor air outlet 50.

When the circulating air is circulated, the entire floor structure is heated, and the tatami 9 is also warmed for a long time. However, since it is not possible to simply supply heat through the tatami mat 9 to the indoor air in the room 1 to the set temperature, that is, to a comfortable temperature for life, the indoor air conditioner ( (Refrigerator, heat pump) 36 are installed. The indoor air conditioner 36 may be a relatively small one corresponding to a small air conditioning load capable of maintaining the room 1 at the installation temperature while maintaining the temperature difference between the circulating air and the room air, and there is no problem of installation space.

As described above, according to the above embodiment, since the outside air adjusted by the outside air conditioner 4 is circulated as the circulating air through the air circulation path 7, the state of the intermediate temperature between the outside air and the room air is between the outside air and the room air. The presence of the circulating air in the air, the temperature gradient between the outdoor 2 and the room 1 can be moderated, so that the condensation of water vapor in the room air having a relatively high humidity during heating can prevent condensation from occurring. The air conditioner 4 for outside air has an outside air intake 20 communicating with the air circulation path 7 to regulate the outside air taken in from the outside air intake 20. For example, when heating in winter, the relative humidity of outside air in winter is generally Specifically, since it is as low as 20 to 30%, there is no possibility that water vapor in the circulating air is condensed during the circulation, and the corrosion of the inner floor 8a, the inner wall 14, the outer floor 12a, the outer wall 16a and the like can be surely prevented.

In addition, since the outside air in winter has a relative humidity of 20 to 30%, the amount of water vapor that becomes the absolute humidity is small, and the temperature can be raised with a small amount of heat, the outside air conditioner 4 needs to have a gentle temperature gradient. In addition, the heat pump as the outdoor air conditioner 4 can be operated with a high coefficient of operation (COP), while the air conditioning load by the indoor air conditioner 36 is small.
Energy loss can be reduced as a whole, and energy saving can be achieved.

Furthermore, since the indoor air conditioner 36 is installed in the room 1, not only the installation work is easy, but also the indoor air conditioner 36 does not absorb or radiate heat from the circulating air being circulated. It is possible to prevent an increase in size and maintain an intermediate temperature of the circulating air during circulation. Further, since the room air near the ceiling wall 30 is forcibly circulated by the duct 56 communicating the room air inlet 31 and the room air outlet 32, the temperature distribution in the room can be averaged. .

A circulating air indoor outlet is provided at the final end of the air circulation path 7.
By providing a static pressure in the air circulation path 7 and adjusting the amount of the circulating air blown into the room, dust such as tatami mats can be prevented from accumulating in the air circulation path 7.

Furthermore, since the tatami mat holding floor plates 8 are laid at intervals with facing the floor ventilation path portion 7b in the air circulation path 7, heat can be transferred by directly contacting the circulating air with the tatami mat 9, for example, tatami mat material Can maintain a soft temperature, and the material of the entire wooden house is held by the soft heat insulator.

In addition, since the heat insulating sheet 10 and the heat insulating glass wool 11 are laid, it is possible to prevent the indoor cold temperature from relatively escaping, and to prevent the external cold temperature from being relatively transmitted to the room. Naturally, the indoor load can also be reduced. In addition, the tatami 9 can be dried by circulating air.

Further, an intake fan 40 is provided between the damper 21 and the outside air intake damper 22, and the intake fan 40 is provided in the air circulation path 7 so that the pressure in the air circulation path 7 does not become lower than the room pressure. Used to increase pressure.

A heat exchanger 39 as an evaporator of the outside air conditioner 4 is provided between the intake fan 40 and the heat pipe type heat exchanger 37, and a heater 41 is provided between the damper 21 and the filter 38. Although used for dehumidification during cooling in summer, the heat exchanger 39 is used at least during heating in winter. A damper 42 for discharging circulating air is provided on the opposite side of the indoor air damper 23 provided at the end of the air circulation path 7, and is used to discharge dust and the like in the air circulation path 7. Further, since the intake outside air and the exhaust air exchange heat with each other in the heat exchanger 37 provided between the outside air inlet 20 and the indoor air outlet 50, energy loss can be reduced and energy saving can be achieved. . This heat exchanger 37 is particularly preferably a heat pipe heat exchanger.

The conduction between the wall ventilation path 7a and the floor ventilation path 7b of the air circulation path 7 can be appropriately stopped by the partition 25. Further, the present invention is useful for offices as well as for energy saving when combined with a free access floor corresponding to office automation.

In FIG. 2, 26 is a foundation, 27 is a circulating air inlet, 28
Is a fan, 29 is a circulating air outlet, 30 is a ceiling wall, 31 is an indoor air inlet, 32 is an indoor air outlet, 34 is a ceiling space, 43 is a roof plate, 45 is a roof such as a tile or a tin. In the figure, the same reference numerals as those in FIG. 1 denote the same parts.

The operation at the time of heating the air conditioner in the wooden house as described above is performed as follows. The heating of the room 1 by the circulating air at an intermediate temperature between the outside air and the room air from the air circulation path 7 mainly does not cause dew condensation on the inner floor 8a, the inner wall 14, the outer floor 12a, and the outer wall 16a. The whole body is warmed softly and it has some meaning of heating through the tatami mat 9. However, in winter, the room 1 has almost no function as air heating means. Separately install the indoor air conditioner 36 in the room 1. The roof 45 has a layer of heat-insulating glass wool 11 formed thereon, the ceiling wall 30 has a sheet-shaped heat insulating sheet 10 laid thereon, and the floor and the wall structure also employ the heat insulating structure, and the air circulation path 7 is also formed. Heat loss is low. Therefore, the air conditioning load of the indoor air conditioner 36 is reduced. Even if the load of the air circulation path 7 and the load of the indoor air conditioner 36 are combined, only this substantial load is required, and there is almost no waste due to heat loss. Since the outside air is heated and flows into the air circulation path 7, the air circulation path 7 has the same humidity as the outside air, and there is no condensation in the air circulation path 7.

Furthermore, a circulating air inlet 27 and a circulating air outlet 29 are provided near the wall of the room 1, respectively, and a room air inlet 31 and a room air outlet 32 are formed on the ceiling wall 30. Warm air that easily accumulates near the ceiling of the room 1 flows in from the room air inlet 31 and flows through the duct 56, so that unevenness of the temperature distribution in the room 1 can be eliminated.

The air circulation path 7 in the wooden house shown in FIG. 2 is formed by connecting a wall ventilation path portion 7a in the air circulation path 7 with a stud and an outer wall.
In this case, the circulating air at a temperature that moderates the temperature gradient between the outdoor 2 and the room 1 may be formed at this edge side space (corridor) consisting of a gap between the outside and the room 1. It will circulate in the space. And the air circulation path 7
Since the inner wall ventilation passage 7a is formed in the edge side space, the workability can be improved in addition to the case where the wall ventilation passage 7a is specially formed in the wall structure.

(Effect of the Invention) According to the invention described in claim 1, the load for indoor air conditioning is distributed to the indoor air conditioner and the outdoor air conditioner, so that the indoor air conditioner and the outdoor air conditioner are relatively light. Not only can it be a load, it can not only save energy as a whole, but also circulate the outside air adjusted by the outside air conditioner as circulating air to the air circulation path. The presence of such a material makes it possible to moderate the temperature gradient between the outside and the inside of the room, so that water vapor in the air can be prevented from condensing and dew condensation occurring, and corrosion of the inner floor, the inner wall, etc., formed of wood or the like can be prevented. . Further, the outside air air conditioner has an outside air intake communicating with the air circulation path, and adjusts the outside air taken in from the outside air intake. Part of the water vapor in the air can be prevented from being condensed, and the corrosion of the inner floor, the inner wall, and the like formed of wood or the like can be reliably prevented.

In addition, since the indoor air conditioner is installed indoors, not only is the installation work easy, but also the indoor air conditioner does not absorb or radiate heat from the circulating air during circulation, preventing the outside air conditioner from becoming larger. Not only is it possible to maintain an intermediate temperature of the circulating air. In addition, since the room air near the ceiling wall is forcibly circulated through the duct communicating the room air inlet and the room air outlet, the temperature distribution in the room can be averaged.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram when the embodiment of the present invention is applied to a floor and a wall portion, and FIG. 2 is an explanatory diagram when a different embodiment of the present invention is applied to the whole room of a house. 1 ... indoor, 2 ... outdoor, 4 ... air conditioner for outdoor air, 7 ...
Air circulation path, 7b: Floor ventilation path, 8a: Inner floor, 10, 11 ...
… Insulation material, 12a …… Outer floor, 14 …… Inner wall, 16a …… Outer wall, 20
…… Outside air intake, 24 …… Room outlet, 30 …… Ceiling wall, 31
... indoor air inlet, 32 ... indoor air outlet, 36 ... indoor air conditioner, 37 ... heat exchanger, 50 ... indoor air outlet, 56
……duct.

Claims (1)

(57) [Claims] 1. An air circulation path formed between an outer floor and an outer wall in contact with outside air and an inner floor and an inner wall in contact with room air, and an outside air intake communicating with the air circulation path. An air conditioner for outside air that adjusts the outside air taken in from the outside air intake to a temperature between the outdoor temperature and the indoor temperature, and circulates the air circulation path using the adjusted outside air as circulating air; and An indoor air conditioner that adjusts indoor air to a set temperature, and is provided in a ceiling space, and communicates with an indoor air inlet formed on one of the ceiling walls and an indoor air outlet formed on the other of the ceiling walls. A duct for forcibly circulating indoor air near the ceiling wall.