JPH0425457B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an air conditioner that can efficiently utilize natural energy such as outside air and cold air under the floor.

[Background technology]

An air conditioner that air-conditions a house by using cold air under the floor or outside air that is relatively lower than room temperature at night has been proposed by the applicant, for example, in the specification of Japanese Patent Application No. 59-39686. has been done.

However, in conventional devices, outside air, cold air under the floor, etc. are introduced into the room only when the temperature of the outside air, cold air under the floor, etc. has dropped to a temperature sufficient to air condition the room. Therefore, in conventional devices like this, the outside air and the cold air under the floor change depending on the sky conditions, so there are relatively few times when the temperature is sufficiently low, and as a result, the efficiency of natural energy use and the equipment's efficiency are reduced. The operating efficiency was poor.

[Purpose of the invention]

The present invention aims to provide an air conditioner that can solve the above-mentioned problems by making it possible to use outside air and underfloor cold air that are not sufficiently low temperature, thereby increasing the efficiency of natural energy use and equipment operation efficiency. .

[Disclosure of the invention]

An embodiment of the present invention will be described below based on the drawings.

In the figure, the air conditioner 1 includes a fan F2 in an air flow path 7 connecting a space P where cold air exists and a room R.
and a sensor S1, and the sensor S1 is connected to the control device C, and in this embodiment,
Room 3 is equipped with a room sensor S2 that turns on and off the auxiliary cold source CA that blows auxiliary cold air.

In this example, the space P in which the cold air exists includes an underfloor space P1 and an outdoor space P2, and the space P2
The space P1 uses the outside air, which is colder than the room temperature at night, and the space P1 uses the cold air under the floor as cold air for air conditioning in the summer. In addition, in this embodiment, the house is equipped with an air conditioning system for winter air conditioning using a hot air generator H consisting of a solar heat collector H1 and a heat storage tank H2 that stores the hot air from the solar heat collector H1. established,
In addition, in this example, rooms 3A, 3B, 3C,
3D (generally referred to as room 3) is air-conditioned.

The solar heat collector H1 is an air-type solar heat collector in which a heat collecting plate 12 is housed in a box 11 whose upper part is shielded by a transparent plate, and the air inside is heated by sunlight. It is formed.

In addition, the heat storage tank H2 includes, for example, a cloth foundation 14 surrounding the underfloor space 13 below the room 3A, a heat insulating material 16 attached to the underfloor surface 15, and cloth foundations 14 facing each other,
A solid heat storage material 17 such as crushed stone is loaded between the partition plate 14 and a small gap, and the rooms 3 are formed on the upper and lower floors with a duct T leading to the upper and lower floors in between.

The solar heat collector H1 has an inlet 2 at its outlet 21 located above, which hangs down inside the duct T and passes through the underfloor space 13 below it, into the heat storage tank H2.
A main pipe 22 communicating with 9 is attached.

The main conduit 22 branches branch conduits 23 and 23 that lead from a branch point a to the inlets 31 and 31 of the rooms 3B and 3D in the duct T, and also connects branch conduits 23 and 23 that lead from the branch point b below to the inlets of the rooms 3A and 3C. Branch conduits 24, 24 connected to 31, 31 are branched, respectively. Further, in the main pipe 22, another fan F1 is interposed between the outlet 21 and the branch point a. The main pipe 22 and the branch pipes 23 , 23 , 24 , 24 form a first air flow path 5 leading from the solar heat collector 2 to the room 3 and the heat storage tank 4 .

Further, a bypass conduit 27 is connected to the main conduit 22 between the branch point B and the intake port 29 at branch points c and d, and a fan F2 is interposed in the bypass conduit 27.

In addition, in the main pipe 22, a first on-off valve D1 is installed between the fan F1 and the branch point a, and a second on-off valve D1 is installed between the branch points c and d.
An on-off valve D2 is provided, and branch pipes 23, 23, 2 are provided.
4 and 24 are provided with third on-off valves D3, respectively.
Further, a fourth on-off valve D4 is interposed in the bypass conduit 27. Note that above the inlet 31, an outlet 32 communicating with the duct T is formed in each room 3. Further, in the floor body below the duct T, a communication port 3 is connected to a conduit 34 extending from the downstream side of the heat storage tank H2.
5 is provided.

The conduit 34 includes the heat storage tank H2, the main conduit 22 between the intake port 29 and the branch point d, and the bypass conduit 2.
7. Main pipe 22 and branch pipe 2 between branch points c and a
3, 23, 24, and 24, a second air flow path 6 is formed which connects the heat storage tank H2 and the room 3, blows hot air from the heat storage tank H2 into the room 3 in the opposite direction, and has a fan F2.

In addition, a solar heat collector H1 is installed on the ceiling plate of the duct T.
A return port 37 is provided to which a conduit 36 extending to the inlet 33 of the pipe is connected.

The space P1 is an underfloor space surrounded by a cloth foundation 14 between the floor of the room 3C facing north and the subfloor surface 15, and can generate cold air cooled by the subfloor surface 15. The space P1 is connected to the main pipe 22 at the branch point e via a first switching valve K1 that allows initial conduction between the branch point d and the intake port 29.
Electrical conduction is established via a branch pipe 45 connected to the terminal. Further, the other end of the branch pipe 46, one end of which is connected to the second switching valve K2 provided in the conduit 34, opens in the space P1.

A guide hole 47 is opened in the cloth foundation 14 and communicates with the outdoor space P2 and has a fifth on-off valve D5.

Therefore, the space P1 includes the branch pipe 45 and the branch points e and d.
The main conduit 22, the bypass conduit 27, the branch point c,
A part of the second air flow path 6 is used together with the main conduit 22 and the branch conduits 23 and 24 between the space P
1 to the room 3 is formed.

Further, the space P2 is connected to the room 3 through the air passage 7 through the guide hole 47 and the space P1. Note that a fan F2 is interposed in the air flow path 7.

Furthermore, in this embodiment, an exhaust pipe 51, one end of which is open outdoors, is connected to the main pipe 22 upstream of the first on-off valve D1 via a third switching valve K3.

Therefore, during solar radiation in winter, the solar heat collector H1 is turned into the room 3 through the first air flow path 5 by opening the first and third on-off valves D1 and D3, as shown in FIG. 2a. When electrical conduction is established and the fan F1 is driven, warm air is sent into the room 3 and the room 3 can be air-conditioned.

On the other hand, by opening only the first and second on-off valves D1 and D2, as shown in FIG. .

Furthermore, as shown in Fig. 2c, when only the third and fourth on-off valves D3 and D4 are opened, the heat storage tank H
2 is connected to the duct T through the conduit 35 and the conduit 34, while the heat storage material 1
After being heated by the heat stored in step 7, the air can be discharged into the room 3 through the second air flow path 6 and the stored heat can be taken out. Note that the blowing from the heat storage tank H2 is different from the direction in which hot air is sent, and therefore the blowing air last passes through the intake port 29, which becomes hot during feeding.
It becomes possible to take out high temperature air.

Furthermore, as shown in FIG. 2d, by switching the first and second switching valves K1 and K2 to make the air flow path 7 conductive, as the fan F2 is driven, the cold air under the floor in the space P1 is transferred to the air flow path. 7 into the room 3, making it possible to cool the room 3 in the summer.

Moreover, when the fifth on-off valve D5 is opened, the space P
2 outside air is passed through the space P1 and the air flow path 7 to the room 3.
can be discharged.

Note that if necessary, the air in the room 3 can be discharged outdoors through the solar heat collector 2 and the exhaust pipe 51.

In the air conditioner 1 having such a configuration, the sensor S1 includes a sensor S1A that measures the temperature of the cold air under the floor in the space P1, a sensor S1B that measures the temperature of the outside air in the outdoor space P2, and a room sensor S2. are installed in each room 3.

Further, the sensor S1 and the room sensor S2 are connected to the control device C, and each room 3 has a
Auxiliary cooling source CA is installed respectively. In addition, auxiliary cooling source
As the CA, an air conditioner such as a so-called cold or warm return unit is used, and the indoor unit of the air conditioner can also be used as an auxiliary cooling source CA.

The control device C has a first set temperature T1 and a second set temperature T2 set in advance, respectively.

Although the first set temperature T1 can lower the room temperature TR, it is not low enough to lower the room temperature TR to the desired temperature TS or maintain that temperature, This first set temperature T1 is set in consideration of the size of the room 3, the amount of air blown, the outside temperature, the heat insulation properties of the room 3, and the like.

The second set temperature T2 is a temperature low enough to lower and maintain the room temperature TR to the desired temperature TS, and is similarly determined in consideration of the conditions of the room and the like.

Also, the room sensor S2 detects the room temperature TR and transmits its output to the control device C.

Furthermore, as shown in Fig. 3, when the start button PB is turned on to drive the device, the control device C detects the cold air at the lower temperature among the temperature TB of the cold air under the floor and the temperature TA of the outside air detected by the sensors S1A and S1B. Select. For example, when the outside air temperature TA is lower than the underfloor cold air temperature TB, the fifth damper D5
is opened, the air passage 7 is opened, and the room 3 is connected.

When the temperature TC of the cold air with a lower temperature among the underfloor cold air and outside air in the selected space P1 or P2 (the temperature of the lower cold air is referred to as TC) is higher than the first set temperature T1, the fan F2 is stopped. let

Further, when the cold air temperature TC is lower than the first set temperature T1, it is determined whether it is even lower than the second set temperature T2. When the temperature is low, the room temperature detected by room sensor S2
Determine whether TR is lower than the desired room temperature TS,
When the room temperature TR is higher than the desired temperature TS, the fan F2 is turned on. Further, when the room temperature TR becomes lower than the desired temperature TS, the fan F2 is turned off. In this way, when the cold air temperature TC is lower than the second set temperature T2, the fan F2
You can turn it on and off repeatedly. In this way Juan F
By intermittently driving 2, the desired room temperature can be achieved.
Room temperature TR is reduced to TR and prevents excessive cooling.
can be maintained within a desirable range.

Also, when the temperature TC of the cold air is in the temperature range between the first set temperature T1 and the second set temperature T2, the fan F2 is turned on and the cold air is continuously supplied to the room 3.
lead to.

Also, when the room sensor S2 detects the room temperature TR and the room temperature TR is higher than the desired temperature TS, the auxiliary cooling source CA is also driven, and when the room temperature is low, the auxiliary cooling source CA is activated. make it stop. In this way, when the cold air temperature TC is in the temperature range between the first and second set temperatures T1 and T2, by continuously blowing cold air, the room temperature can be adjusted to some extent.
Reduces TR. In addition, by supplementing the cooling heat with the auxiliary cooling source CA, the room temperature TR is lowered to the desired temperature TS.

In addition, in the device of the present invention, it is possible to omit the use of the auxiliary cooling source CA, and in that case, the temperature of the cold air
When TC is in the temperature range between the first and second set temperatures T1 and T2, continue to operate the fan F2,
Useful for lowering room temperature TR.

Further, when the cold air temperature TC is higher than the first set temperature T1, the fan F2 is stopped as described above.

In addition, the auxiliary cooling source CA is used when rapid cooling is required.
In addition, when further lowering the room temperature TR, the first
Regardless of the temperature range determined by the second set temperatures T1 and T2, continuous operation may be performed as appropriate, or intermittent operation may be performed.

Further, the control device C has lamps LP1 and LP2,
The lamp LP1 lights up, for example, in a marginal color when the fan F2 is continuously driven, and the lamp LP2
Turns on a red light when continuously turning on and off. In addition, when Fan F2 is stopped,
It is possible to visually check the operating status by turning off the lamps LP1 and LP2.

〔Effect of the invention〕

In this way, the air conditioner of the present invention includes a fan and a sensor attached to the air flow path connecting the room and the space where cold air exists, and also sets the first set temperature and the second set temperature.
The fan is equipped with a control device that stops the fan and operates it continuously or intermittently depending on the set temperature of the fan. Therefore, in addition to cold air at a lower temperature, it also uses cold air at a higher temperature to air condition the room. In addition to making effective use of natural energy and helping to save energy, it also improves the operating efficiency of equipment by expanding the temperature range in which cold air can be used. Furthermore, when the temperature is below the second set temperature, by intermittently driving the fan according to the room temperature,
To lower the room temperature to a desired temperature, prevent excessive cooling, and maintain it within a desirable range. Also, as in the above embodiment, by using an auxiliary cooling source,
To enable efficient air conditioning while utilizing cold air over a relatively wide temperature range.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the present invention, and FIG.
Figures a to d are diagrams showing the action, and Figure 3 is a flow chart. 7... Air flow path, C... Control device, CA... Auxiliary cooling source,
F2...fan, S1, S1A, S1B...sensor, S2...room sensor, T1...first set temperature,
T2...Second set temperature, TA, TB, TC...Cold air temperature, TR...Room temperature, TS...Desired temperature.

Claims (1)

[Claims] 1. A fan and a sensor for guiding cold air into the room are attached to an air flow path connecting a room and a space where cold air exists, and the sensor is connected to a first fan whose temperature of the cold air detected by the sensor is predetermined. When the temperature is higher than the set temperature, the fan is stopped, and in the temperature range between the first set temperature and a second set temperature that is lower than the first set temperature, the fan is driven continuously, and the fan is operated continuously at the second set temperature. An air conditioner connected to a control device that can drive the fan intermittently at temperatures lower than the above temperature.