JPH0379935A - Central air conditioner - Google Patents

Abstract

PURPOSE:To provide a positive keeping of a base temperature of another room even if a back-up air conditioner is used in one room by a method wherein an information source changing-over means is provided for controlling a cooling operation for a controller in response to information from a discharged gas temperature sensor when a back-up cooling state is attained in response to information from a discriminating means. CONSTITUTION:A discriminating means 14 for use in discriminating a back-up cooling state in which a sensed temperature got by a discharged gas temperature sensing sensor S2 is higher than a sensed temperature sensed by a circulating air temperature sensing sensor S1 is provided. Information source changing-over means 15 is provided for controlling a cooling operation for a controller C1 in response to information got from the sensor S2 when a back-up cooling state is attained. Even if back-up air conditioners B1 and B2 are used in the rooms 1a and 1b and a sensed temperature of the sensor S1 becomes a low temperature so as to stop a base air conditioner A1, when temperatures in a room 1c connected to a discharging duct 10 or a corridor 1d become higher than a cooling base temperature, the base air conditioner A1 is operated to perform a cooling operation and then the cooling base temperatures at the room 1c or the corridor 1d are kept.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a method for maintaining each room at a comfortable temperature in independent housing, apartment complexes, office buildings, etc., and
In order to ventilate all the rooms, a base air conditioner is connected to each of the plurality of rooms by a temperature-controlled air supply duct, and an air circulation duct to the base air conditioner is connected to a part of the plurality of rooms.
Further, an exhaust duct is connected to the remaining part, an outside air supply path is connected to the air circulation duct, a backup air conditioner is provided to individually control the temperature of the plurality of rooms, and the temperature of the air circulated by the air circulation duct is detected. A central type equipped with a circulating air temperature detection sensor and a controller that automatically switches the base air conditioner between an operating state and a stopped state so that the detected temperature is maintained within a set range based on information from the sensor. Regarding air conditioning equipment.

[Conventional technology]

Conventionally, when a controller switches a base air conditioner between an operating state and a stopped state, only information from a circulating air temperature detection sensor is used to maintain the temperature of circulating air from a room within a set range.

In other words, during heating, the base air conditioner was operated when the temperature detected by the circulating air temperature detection sensor was below the set value, and stopped when the temperature was above the set value. Additionally, during cooling, the base air conditioner was operated when the temperature detected by the circulating air temperature sensor exceeded the set value, and stopped when the temperature fell below the set value.

[Problem to be solved by the invention]

However, when the backup air conditioner is used in a room connected to the air circulation duct, the temperature of the circulating air changes significantly, causing the base air conditioner to shut down and the base air conditioner to stop working in the room connected to the exhaust duct. There was a risk that the system would stop and become unable to maintain the base temperature.

In other words, the ability to maintain the base temperature of all rooms at a base temperature of about 17°C during heating, and to maintain the base temperature of all rooms at a base temperature of about 28°C during cooling is lost, and each room can be adjusted to the desired level of comfort as needed. It takes a long time to adjust the temperature using a backup air conditioner.

An object of the present invention is to make it possible to sufficiently and reliably maintain the base temperature in other rooms even if a backup air conditioner is used in some rooms, and to provide an inexpensive and trouble-free means for doing so. The point is to make improvements.

[Means to solve the problem]

The characteristic configuration of the first invention is that a base air conditioner is connected to each of a plurality of rooms by a temperature-controlled air supply duct, and an air circulation duct to the base air conditioner is connected to a part of the plurality of rooms, and an air circulation duct to the base air conditioner is connected to the remaining part of the plurality of rooms. An exhaust duct is connected to the air circulation duct, an outside air supply path is connected to the air circulation duct, and a backup air conditioner is provided to control the temperature of each of the plurality of rooms separately.
a circulating air temperature detection sensor for detecting the temperature of the circulating air by the air circulation duct; and a circulating air temperature detection sensor to maintain the detected temperature within a set range based on information from the sensor.
In the central air conditioner equipped with a controller that automatically switches the base air conditioner between an operating state and a stopped state, an exhaust temperature detection sensor is provided to detect the temperature of the exhaust gas from the exhaust duct, and the circulating air temperature detection sensor A determining means is provided for determining a backup cooling state in which the temperature detected by the exhaust gas temperature detection sensor is higher than the detected temperature, and when the backup cooling state is entered based on information from the determining means, the controller is activated to detect the exhaust temperature. The present invention is provided with an information source switching means for controlling air conditioning based on information from the sensor, and its function is as follows.

[For production]

During cooling, when the backup air conditioner is used in a room connected to the air circulation duct, the temperature detected by the circulating air temperature detection sensor drops below the set value, and the base air conditioner stops cooling, causing the room connected to the exhaust duct to cool. When the room temperature rises due to the shutdown of the backup air conditioner and the temperature detected by the exhaust temperature detection sensor becomes higher than the temperature detected by the circulating air temperature detection sensor, the controller uses the determination means and information source switching means to detect the exhaust temperature detection sensor. The system operates to maintain the detected temperature below the set value, ensuring that the cooling base temperature (approximately 28°C) is maintained in the room connected to the exhaust duct.

Therefore, as in the prior art described above, it is possible to reliably prevent the inconvenient situation in which it becomes impossible to maintain the cooling base temperature in the room connected to the exhaust duct due to the use of a backup air conditioner in the room connected to the air circulation duct. The room where the backup air conditioner is not used can be reliably maintained at approximately the cooling base temperature, and the backup air conditioner can quickly adjust the cooling temperature to the desired temperature in that room.

It is also possible to consider a method in which, for example, a sensor is provided in a room connected to an exhaust duct to detect the room temperature, and the information from the sensor is used to function in the same manner as in the first invention.
In that case, there are many rooms to be targeted (as is true, the cost required for the sensor is high, and the communication line from the sensor to the determination means is likely to be disconnected, which leads to problems in terms of cost and maintenance.

However, according to the first invention, it is only necessary to provide one sensor that detects the exhaust temperature of the exhaust duct, and the sensor is provided in the outdoor unit together with the control element, so that long communication lines can be omitted, reducing costs. It is also advantageous in terms of maintenance.

[Means to solve the problem]

A characteristic configuration of the second invention is that a base air conditioner is connected to each of a plurality of rooms by a temperature-controlled air supply duct, and an air circulation duct to the base air conditioner is connected to a part of the plurality of rooms, and an air circulation duct to the base air conditioner is connected to the remaining part. An exhaust duct is connected to the air circulation duct, an outside air supply path is connected to the air circulation duct, and a backup air conditioner is provided to control the temperature of each of the plurality of rooms separately.
a circulating air temperature detection sensor for detecting the temperature of the circulating air by the air circulation duct, and the detected temperature is maintained within a set range based on information from the sensor;
In the central air conditioner equipped with a controller that automatically switches the base air conditioner between an operating state and a stopped state, an exhaust temperature detection sensor is provided to detect the temperature of the exhaust gas from the exhaust duct, and the circulating air temperature detection sensor A determining means is provided for determining a backup heating state in which the temperature detected by the exhaust gas temperature detection sensor is lower than the detected temperature, and when the backup heating state is reached based on information from the determining means, the controller is activated to detect the exhaust temperature. The present invention is based on the provision of an information source switching means for controlling the heating based on information from the sensor, and its function is as follows.

[For production]

In heating, when the backup air conditioner is used in a room connected to the air circulation duct, the temperature detected by the circulating air temperature detection sensor exceeds the set value, and the base air conditioner stops heating operation, causing the room connected to the exhaust duct to stop heating. When the room temperature drops due to the backup air conditioner stopping, and the temperature detected by the exhaust temperature detection sensor becomes lower than the temperature detected by the circulating air temperature detection sensor, the controller uses the determination means and information source switching means to detect the exhaust temperature detection sensor. The system operates to maintain the detected temperature above the set value, ensuring that the heating base temperature (approximately 17°C) is maintained in the room connected to the exhaust duct.

Therefore, as in the prior art mentioned above, the inconvenient situation where it becomes impossible to maintain the heating base temperature in the room connected to the exhaust duct due to the use of a backup air conditioner in the room connected to the air circulation duct can be reliably prevented. The room where the backup air conditioner is not used can be reliably maintained at approximately the heating base temperature, and the backup air conditioner can quickly adjust the heating temperature to the desired temperature in that room.

Similarly to the first invention, it is only necessary to provide one sensor to detect the exhaust temperature of the exhaust duct, and by providing the sensor in the outdoor unit together with the control element, long communication lines can be omitted, reducing costs. It is also advantageous in terms of maintenance.

〔Effect of the invention〕

As a result, even if a backup air conditioner is used in some rooms, the base temperature for cooling or heating in other rooms can be maintained sufficiently and reliably, and the desired cooling or heating temperature can be quickly achieved in each room. We are now able to provide central air conditioners with even higher performance ventilation.

〔Example〕

Next, examples will be shown.

[A] Example 1 As shown in Fig. 1, a plurality of rooms (1a) such as a living room,
A base air conditioner (A2) for cooling is connected to each of (1b) and (1c) by a temperature-controlled air supply duct (2), and the base air conditioner is connected to some of the rooms (1a) and (1b). The air circulation duct (3) to the machine (A1) and the remaining part (
1c) is connected to an exhaust duct (10), and the air circulation duct (3) is connected to an outside air supply path (11). In addition, when connecting room (1C) and exhaust duct (10),
A corridor (1d) connected to c) by a gallery (8), and
Sanitary (
Ie) through which the exhaust duct (10) passes directly. Also,
The damper (12) is for adjusting the amount of ventilation, and the damper (13) is automatically closed only when the sanitary (1e) is used, and is for ventilating the sanitary (le).

In other words, the air from the blower (4) is transferred to the base air conditioner (A1).
) in the room (1) and cooled with the heat exchange tube (5).
a), (1b), (1c) and room (1a)
, (1b), (1c) and hallway (1d) for example 28
Maintain the cooling base temperature at around °C, which is not too hot.
d), arranged to ventilate the sanitary (1e).

Room (1a), (1b), (1c) respectively.

Fan coil unit type backup air conditioners (B1), (Bz), (8) that cool (1b) and (1c) separately.
3) and backup air conditioners (B1), (B2)
, (B3) allows rooms (1a), (1b), (
1c) The temperature of each air conditioner can be adjusted individually so that a comfortable cooling condition can be obtained depending on the condition of each air conditioner.

Base air conditioner (A1) and backup air conditioner (81).

(Bz) and (Bs) are all connected in parallel to the same cooling heat source (6) such as an absorption type or compression type refrigerator through a water supply pipe (7).

A circulating air temperature detection sensor (S1) that detects the temperature of the circulating air from the rooms (1a) and (1b) is installed in the air circulation duct (3), and the detected temperature is determined based on the information from the sensor (S1). A controller (C1) is provided that automatically switches the base air conditioner (A1) between an operating state and a stopped state so that the base air conditioner (A1) is maintained within a set range.

An exhaust temperature detection sensor (S2) is provided to detect the temperature of exhaust gas from the exhaust duct (10), and the backup cooling state is such that the temperature detected by the exhaust temperature detection sensor (S2) is higher than the temperature detected by the circulating air temperature detection sensor (S1). A determining means (14) is provided for determining the determining means (14).
When the backup cooling state is entered based on information from
Information source switching means (15) that causes the controller (C1) to perform cooling control based on information from the exhaust temperature detection sensor (S2)
is provided.

In other words, the room (1a) connected to the air circulation duct (3)
, (1b), even if the backup air conditioner (B1) is used and the temperature detected by the circulating air temperature detection sensor (S1) is low enough to stop the base air conditioner (A1), the exhaust duct When the temperature of the room (1C) or hallway (1d) connected to (10) becomes higher than the cooling base temperature, the base air conditioner (A2) goes into cooling operation and the room (IC
) and hallways (ld) to maintain the cooling base temperature.

The sensors (S1), (St), controller (C1), determination means (14), and information source switching means (15) are all connected to the outdoor unit (X
).

[B] Embodiment 2 Next, a second embodiment will be shown with reference to FIG. 2, and the same reference numbers will be used for the same components as in the first embodiment, and the explanation will be omitted.

The base air conditioner (A2) heats the air from the blower (4) with a heat exchange tube (5) and heats the air from the blower (4) to the room (1a).
1b) and (Ic) are adjusted to a heating base temperature of, for example, about 17° C., which is not cold.

Backup air conditioner (B4), (BS), (BS)
is to bring each of rooms (1a), (Ib), and (1c) into a comfortable heating state.

Base air conditioner (A2) and backup air conditioner (B4)
, (Ba), and (Bs) are connected in parallel to the same heating heat source (16) such as a boiler through a hot water supply pipe (17).

The determination means (18) includes a circulating air temperature detection sensor (St
This is to determine a backup heating state in which the temperature detected by the exhaust gas temperature detection sensor (S) is lower than the temperature detected by the exhaust gas temperature detection sensor (S).

The information source switching means (19) causes the controller (C2) to perform heating control based on information from the exhaust temperature detection sensor (S) when the backup heating state is entered.

In other words, the room (La) connected to the air circulation duct (3)
, Backup air conditioner (84) in (1b), (Bs)
is used, and even if the temperature detected by the circulating air temperature detection sensor (S1) reaches a high temperature that requires stopping the base air conditioner (A2), the room (1c) or hallway (ld) connected to the exhaust duct (10) When the temperature of the room (1c) becomes lower than the heating base temperature, the base air conditioner (A) starts heating operation
The structure is such that it is possible to maintain the heating base temperature in the hallway (1d).

[Another example]

Next, another embodiment will be described.

Rooms to be air conditioned (1a), (1b), (Ic)
There are no restrictions on the type, number of rooms, size, etc. Also, rooms (1a), (1b), connected to the air circulation duct (3),
The number of rooms (1c) connected to the exhaust duct (10) may be singular or plural. Then, the exhaust duct (10) may be directly connected to the room (IC).

The specific configurations of the base air conditioners (A1) and (Av) and the backup air conditioners (B1) to (B6) can be appropriately selected from various known types. Alternatively, it may be a combination type for heating and cooling, which is a combination of the first embodiment and the second embodiment.

The controllers (C1) and (CZ) control the operating status of the base air conditioners (AI) and (A, ) according to the temperature changes detected by the circulating air temperature detection sensor (S2) and exhaust temperature detection sensor (S). Providing an output means for automatically adjusting the temperature capacity, for example, by switching between high and low levels, temperature control can be performed with higher accuracy.

A plurality of backup air conditioners (B1) to (B6) may be provided in part or all of the rooms (1a), (Ib), and (Ic).

The cooling heat source (6) and heating heat source ((6) for the base air conditioners (A1), (A2) and the backup air conditioners (B1) to (B6) can be selected from various known sources.

Judgment means (14), (18) and information source switching means (15)
).

The specific structure of (19) can be selected appropriately.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

FIG. 1 is a flow sheet showing the first embodiment of the present invention;
The figure is a flow sheet showing a second embodiment of the present invention.

Claims (1)

[Claims] 1. A base air conditioner (A_1) is connected to each of a plurality of rooms (1a), (1b), and (1c) by a temperature-controlled air supply duct (2), and a part of the plurality of rooms is Air circulation duct (3) to the base air conditioner (A_1) in (1a) and (1b)
and an exhaust duct (10) is connected to the remaining part (1c), an outside air supply path (11) is connected to the air circulation duct (3), and the plurality of rooms (1a), (1b), (1c) are connected to each other. ) Backup air conditioners (B_1) and (B_
2), (B_3) are provided, and the circulating air temperature detection sensor (S_1) detects the temperature of the circulating air by the air circulation duct (3), and the detected temperature is set based on the information from the sensor (S_1). to be maintained within the range,
A central air conditioner equipped with a controller (C_1) that automatically switches the base air conditioner (A_1) between an operating state and a stopped state, the exhaust temperature detection unit detecting the temperature of exhaust gas from the exhaust duct (10). a determination means (14) for determining a backup cooling state in which the temperature detected by the exhaust gas temperature detection sensor (S_2) is higher than the temperature detected by the circulating air temperature detection sensor (S_1); Information source switching means (15) is provided for causing the controller (C_1) to perform cooling control based on the information from the exhaust temperature detection sensor (S_2) when the backup cooling state is entered based on the information from the means (14). Central air conditioning system. 2. A base air conditioner (A_2) is connected to each of the plurality of rooms (1a), (1b), and (1c) by a temperature-controlled air supply duct (2), and some of the plurality of rooms (1a), (1b) are connected to each other by a temperature-controlled air supply duct (2). ) to the air circulation duct (3) to the base air conditioner (A_2).
and an exhaust duct (10) is connected to the remaining part (1c), an outside air supply path (11) is connected to the air circulation duct (3), and the plurality of rooms (1a), (1b), (1c) are connected to each other. ) Backup air conditioners (B_4) and (B_
5), (B_6) are provided, and a circulating air temperature detection sensor (S_1) is provided to detect the temperature of the circulating air by the air circulation duct (3), and the detected temperature is set based on information from the sensor (S_1). to be maintained within the range,
A central air conditioner equipped with a controller (C_2) that automatically switches the base air conditioner (A_2) between an operating state and a stopped state, the exhaust temperature detection unit detecting the temperature of exhaust gas from the exhaust duct (10). A sensor (S_2) is provided, and a determination means (18) is provided for determining a backup heating state in which the temperature detected by the exhaust gas temperature detection sensor (S_2) is lower than the temperature detected by the circulating air temperature detection sensor (S_1), Information source switching means (19) is provided for causing the controller (C_2) to perform heating control based on the information from the exhaust temperature detection sensor (S_2) when the backup heating state is entered based on the information from the means (18). Central air conditioning system.