JP2013200067A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly carry out comfortable air conditioning even in a room where a temperature sensor is not installed.SOLUTION: An air conditioner is provided which carries out air conditioning of a room 4A where a temperature sensor 5 is installed and a room 4B where the temperature sensor is not installed using a common air for air conditioning. When the air for air conditioning is supplied to the room 4A so that a temperature detected by the temperature sensor 5 becomes a set temperature and the air conditioning of the room 4B is started, the supply of the air for air conditioning to the room 4B is started and the supply of the air for air conditioning to the room 4A is intermittently stopped.

Description

  The present invention relates to an air conditioner that air-conditions a plurality of rooms with common air-conditioning air generated by a single indoor unit.

  Conventionally, a compressor of an outdoor unit, an outdoor heat exchanger, and an indoor heat exchanger of an indoor unit are connected by a refrigerant pipe to form a refrigeration cycle, and the air-conditioning air heat-exchanged by the indoor heat exchanger is blown to the blower. Has proposed an air conditioner that supplies a plurality of rooms via a duct and a damper (for example, Patent Document 1).

  This air conditioner detects the difference between the blower temperature in the vicinity of the blower of the indoor unit and the set temperature of the indoor unit as an air conditioning load, and controls the rotational speed of the compressor of the outdoor unit according to the air conditioning load, Is set to the indoor unit set temperature, and the temperature of each room is detected by a temperature sensor. Depending on the difference between the detected temperature and the set temperature of the room, the zone of the room (the detected temperature of the room is detected). The zone is determined whether it is in a distance from the set temperature), and the opening and closing of the damper in the branch duct of the room is controlled according to the result of the zone determination, and the temperature of each room is set in each room. The temperature is controlled to be high.

JP-A-6-50598

  However, a system in which a temperature sensor is installed in each room and the room temperature is individually adjusted for each room, such as the above-described air conditioner, has a problem that requires construction for installing the temperature sensor. Therefore, for example, as shown in FIG. 5 (a), among the six rooms 4A to 4F, the temperature sensor 5 is installed only in the room 4A that is almost always air-conditioned, and the other rooms 4B to 4F are It is conceivable to perform air conditioning according to the air conditioning content of the room 4A.

  However, in this case, as shown in FIG. 5B, for example, when the air conditioning of the room 4B is started in the air conditioner of the room 4A, the room temperature of the room 4B is controlled according to the room temperature control of the room 4A. Will change, and the air conditioning of the room 4B will be incomplete. For example, in the heating operation, as shown in FIG. 6, when the air conditioning of the room 4B is started at time t0, the temperature of the room 4B rises, but the rate of increase becomes moderate, and the temperature difference between the rooms 4A and 4B. It takes a long time for the room 4B to reach a comfortable room temperature without shrinking. Therefore, in order to make the room 4B comfortable early, it is possible to perform a dash operation that maximizes the capacity of the compressor by stopping the control based on the temperature detected by the temperature sensor 5, but in this case, the room 4A is excessive. The problem of air conditioning occurs.

  An object of the present invention is to provide an air conditioner that can quickly and comfortably perform air conditioning even in a room in which no temperature sensor is installed.

In order to achieve the above object, an invention according to claim 1 includes an outdoor unit including an outdoor heat exchanger, an indoor heat exchanger connected to the outdoor heat exchanger, a blower, a controller, and a blower distributor. Indoor unit, a first room in which a temperature sensor connected to the controller is installed, a second room in which no temperature sensor is installed, and a blower provided in each of the first and second rooms. An air conditioner having an outlet, a duct connecting the air distributor of the indoor unit and the air outlets, and a damper for opening and closing a passage provided in the middle of each duct. When the air conditioning air is supplied from the air distributor to the first room so that the temperature detected by the temperature sensor is a set temperature by opening the damper of the duct of the first room, Said When the air conditioning of the second room is started, the damper of the duct of the second room is opened to start the supply of the air for air conditioning to the second room, and the duct of the first room is started. The damper is closed to cut off the supply of the air-conditioning air to the first room for a predetermined time.
The invention according to claim 2 is the air conditioner according to claim 1, wherein when the temperature detected by the temperature sensor in the first room is insufficient with respect to a set temperature, the first The predetermined time for shutting off the supply of the air-conditioning air to the room is longer as the temperature difference between the temperature detected by the temperature sensor in the first room and the set temperature is smaller.
The invention according to claim 3 is the air conditioner according to claim 1, wherein the temperature detected by the temperature sensor in the first room is insufficient with respect to a set temperature, and the first room When the temperature difference between the temperature detected by the temperature sensor and the set temperature is greater than a predetermined value, the air-conditioning air is not shut off to the first room.
According to a fourth aspect of the present invention, in the air conditioner according to the first aspect, the temperature detected by the temperature sensor in the first room is higher than a set temperature during the heating operation, or is set during the cooling operation. When the temperature is lower than the temperature, the predetermined time for shutting off the supply of the air-conditioning air to the first room is a temperature difference with respect to a set temperature of the temperature detected by the temperature sensor of the first room. The larger is the length, the longer it is.

  ADVANTAGE OF THE INVENTION According to this invention, while installing a temperature sensor only in a 1st room, comfortable air conditioning can be performed rapidly also about the 2nd room which does not install a temperature sensor.

It is a block diagram of the air conditioner of the Example of this invention. It is a flowchart of control of the air conditioner of the Example of this invention. It is explanatory drawing of the air-conditioner switching of the Example of this invention. It is a temperature characteristic figure of room 4A, 4B at the time of the heating operation of the Example of this invention. It is explanatory drawing of the conventional air conditioning switching. It is a temperature characteristic figure of room 4A, 4B at the time of the conventional heating operation.

  FIG. 1 shows the configuration of the air conditioner of the present invention. Reference numeral 1 denotes a blower / distributor for air-conditioning air installed on a ceiling or the like of a building. The indoor unit 10 includes an indoor heat exchanger, a blower, and a controller 11 in addition to the blower distributor 1. And the indoor heat exchanger is connected with the outdoor heat exchanger of the outdoor unit 20 by the piping for refrigerant | coolants, and the refrigerating cycle is comprised. The air distributor 1 supplies air for air conditioning (cold air or warm air) sent by the air blower of the indoor unit 10 to the rooms 4A to 4F through the ducts 2A to 2F, respectively. The ducts 2A to 2F are provided with dampers 3A to 3F for opening and closing the passage. In the room 4A, a temperature sensor 5 connected to the controller 11 of the indoor unit 10 is installed. In addition, the temperature sensor is not installed in the other rooms 4B to 4F. In relation to the claims, the room 4A corresponds to the first room, and the rooms 4B to 4F correspond to the second room. The controller 11 performs operation control of indoor units and outdoor units, opening / closing control of the dampers 3A to 3F, and the like. Note that the air distributor 1 may be connected to the indoor unit 10 by a duct.

  FIG. 2 shows a flowchart for air conditioning control of the room 4B. The program represented by this flowchart is stored in the memory of the computer in the controller 11 and is executed by the computer.

  Here, it is first determined whether or not the room 4A in which the temperature sensor 5 is installed is air-conditioned. This determination is made by checking whether or not the damper 3A for the room 4A is open. When the room 4A is not air-conditioned (S1-N), the damper 3B of the room 4B is opened, air-conditioning air is supplied to the room 4B, and air-conditioning is started (S2). At this time, control by the temperature detected by the temperature sensor 5 is not performed.

  When the room 4A is air-conditioned (S1-Y), the temperature of the room 4A is controlled so that the temperature detected by the temperature sensor 5 becomes the set temperature of the room 4A. At this time, the temperature difference ΔT of the shortage of the detected temperature Ts of the temperature sensor 5 with respect to the set temperature Tt (“Tt−Ts” for heating and “Ts−Tt” for cooling) is determined, and the temperature difference ΔT. When the temperature exceeds 5 ° C. (S3-Y), the damper 3B of the room 4B is opened, air for air conditioning is supplied, and air conditioning of the room 4B is started (S2).

  On the other hand, when the difference ΔT is 5 ° C. or less (S3-N), first, the damper 3B of the room 4B is opened to start air conditioning of the room 4B (S4), and the damper of the room 4A is closed (S5). ) The air conditioning of the room 4A is stopped, and the air conditioning efficiency of the room 4B is increased. At that time, if the dash operation that maximizes the capacity of the outdoor unit 20 is performed, the room 4B can be brought to a comfortable temperature in a short time.

  And if temperature difference (DELTA) T of room 4A at this time is in the range of 1-5 degreeC (S6-Y), since the air conditioning of the room 4A is still inadequate, it waits for two-minute progress (S7). Then, the damper 3A of the room 4A is opened (S8), and the air conditioning of the room 4A is resumed. On the other hand, if the temperature difference ΔT of the room 4A is less than 1 ° C. (S6-N), the air conditioning of the room 4A is almost sufficient, and after waiting for 5 minutes (S9), the damper 3A of the room 4A is turned on. Opening (S8), the air conditioning of the room 4A is resumed.

  As a result, when the air conditioning of the room 4B is started, if the temperature difference ΔT of the shortage of the room 4A is larger than 5 ° C., the air conditioning of the room 4A is inadequate, so the air conditioning of the room 4A continues. In this state, air conditioning of the room 4B is started. As a result, both the rooms 4A and 4B are air-conditioned toward the set temperature. When the temperature difference ΔT for the shortage of the room 4A is as small as less than 1 ° C., the room 4A is sufficiently air-conditioned, so the air-conditioning of the room 4A is interrupted for 5 minutes, and the room is supplied to the room 4A for 5 minutes. Since the air-conditioning air that has been supplied is additionally supplied to the room 4B, the room 4B is strongly air-conditioned. Further, when the temperature difference ΔT for the shortage of the room 4A is in the range of 1 to 5 ° C., the room 4A cannot be said to be sufficiently air-conditioned, so the air-conditioning of the room 4A is interrupted for a short two minutes. The air-conditioning air that has been supplied to the room 4A for the minute is additionally supplied to the room 4B, so that the room 4B is strongly air-conditioned.

  In this manner, the room 4B is air-conditioned so that the room temperature of the room 4A currently being air-conditioned does not deviate greatly from the set temperature. In the room 4B, as the temperature difference ΔT for the shortage of the room 4A at the start of the air conditioning is smaller, the time for stopping the air conditioning in the room 4A is lengthened and the air is strongly air-conditioned accordingly. Will be done.

  FIG. 3 illustrates the switching of air conditioning in the rooms 4A and 4B described above. FIG. 4 shows the temperature change in the rooms 4A and 4B during the heating operation. In FIG. 4, the damper 3A of the room 4A is closed and the damper 3B of the room 4B is opened at time t1, and thereafter, the temperature of the room 4A decreases and the temperature of the room 4B increases. Further, since the damper 3A of the room 4A is opened at the time t2, the temperature of the room 4A rises thereafter, and the tendency of the temperature of the room 4B increases.

  In the above description, the time during which the damper 3A of the room 4A is closed is 2 minutes when the temperature difference ΔT is in the range of 1 ° C ≦ ΔT ≦ 5 ° C, and 5 minutes when the temperature difference ΔT <1 ° C. It is not limited to. For example, 1 minute when 4 ° C ≦ ΔT ≦ 5 ° C, 2 minutes when 3 ° C ≦ ΔT <4 ° C, 3 minutes when 2 ° C ≦ ΔT <3 ° C, 1 ° C ≦ ΔT <2 ° C For the time when the damper 3A in the room 4A is closed, such as 4 minutes when ΔT <1 ° C., the step of lengthening the smaller the temperature difference ΔT may be made finer.

  In the above, the case where the room 4B is additionally air-conditioned while the room 4A is currently air-conditioned has been described. In addition, any one of the other rooms 4C to 4F is additionally provided. The same control is performed when air-conditioning is performed. At this time, in the room 4B where air conditioning has already started, the damper 3B is kept open and the air conditioning is continued.

  In the above description, the case where the temperature of the room 4A does not exceed the set temperature has been described. However, depending on the temperature control, an overshoot phenomenon during heating in which the room temperature rises above the set temperature or an undershoot phenomenon during cooling in which the room temperature falls below the set temperature may occur. In this way, the room 4A has a temperature higher than the set temperature during heating, or is excessively air-conditioned such that the temperature is lower than the set temperature during cooling. When the air conditioning is started, the damper 3B of the room 4B is opened and the damper 3A of the room 4A is closed. As the temperature difference with respect to the set temperature is larger, the time during which the damper 3A of the room 4A is closed is lengthened. Excessive air conditioning can be prevented and energy saving can be realized.

  In the above description, the control of the air conditioner is executed by the computer in the controller 11. However, the present invention is not limited to this, and the computer is provided in, for example, an indoor unit or an outdoor unit. The air conditioner may be controlled according to the issued operation instruction.

  10: indoor unit, 11: controller, 1: air distributor, 2A-2F: duct, 3A-3F: damper, 4A-4F: room, 5: temperature sensor, 20: outdoor unit

Claims (4)

An outdoor unit provided with an outdoor heat exchanger, an indoor heat exchanger connected to the outdoor heat exchanger, a blower, a controller, an indoor unit provided with a blower distributor, and a temperature sensor connected to the controller are installed. A first room, a second room in which no temperature sensor is installed, an air outlet provided in each of the first and second rooms, the air distributor of the indoor unit, and the air outlets And an air conditioner provided with a damper for opening and closing a passage in the middle of each duct.
Under the control of the controller, the damper of the duct in the first room is opened, and air for air conditioning is supplied from the air distributor to the first room so that the temperature detected by the temperature sensor becomes a set temperature. When starting to add air conditioning of the second room, the damper of the duct of the second room is opened to start supplying the air for the air conditioning to the second room, An air conditioner characterized in that the damper of the duct in the first room is closed to cut off the supply of the air conditioning air to the first room for a predetermined time. In the air conditioner according to claim 1,
When the temperature detected by the temperature sensor of the first room is insufficient with respect to a set temperature, the predetermined time for cutting off the supply of the air-conditioning air to the first room is the first time. An air conditioner characterized in that the longer the temperature difference between the temperature detected by the temperature sensor in the room and the set temperature, the longer. In the air conditioner according to claim 1,
The temperature detected by the temperature sensor in the first room is insufficient with respect to the set temperature, and the temperature difference between the temperature detected by the temperature sensor in the first room and the set temperature is a predetermined value. When it is larger, the air conditioner is not shut off from the air-conditioning air to the first room. In the air conditioner according to claim 1,
When the temperature detected by the temperature sensor in the first room is higher than the set temperature during the heating operation or lower than the set temperature during the cooling operation, the air conditioning for the first room is performed. The air conditioner characterized in that the predetermined time for shutting off the supply of air is made longer as the temperature difference between the temperature detected by the temperature sensor in the first room and the set temperature is larger.

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