JPS62153648A - Air conditioner - Google Patents

Abstract

PURPOSE:To easily carry out an energy saving control of the air conditioner by making it possible to conduct correction of a set room temperature and starting or stopping of air conditioning of respective rooms by either of a main controller and a room controller. CONSTITUTION:An operational mode is set by the manipulation of an operational mode key 22 in a main controller 19, and is displayed on LEDs 23-26. The selection of the room number is conducted by manipulating a key 28, and inputting of the set room temperature of the room is carried out by manipulating keys 29 and 30, and further the selection whether air conditioning is started or stopped is conducted by starting and stopping keys 31-34. These results are displayed on a display unit 27, and inputted to a CPU 40 and stored in a memory 41. Even in a room controller 14, any change in the set room temperature is inputted to a CPU 47 of a microcomputer 46, and stored in a memory 48, displayed in a display unit 35 and transmitted to a control unit 28. Further, the current room temperature is detected by a detector 52 and inputted to the CPU 47, displayed in the display unit 35 and transmitted to the control unit 28. As described above, setting of the room temperature and change of starting and stopping can be easily conducted.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a duct type air conditioner that employs a variable air volume control system that can independently adjust the room temperature of each room.
Controller C for inputting the set room temperature, etc.

[Conventional technology]

Central air conditioning systems use air ducts to distribute temperature-controlled air to each room for air conditioning. It is possible to achieve high-quality air conditioning, and the room to be air-conditioned has only an outlet and an inlet, making the indoor space more efficient (two can be used), and there are fewer problems with the heat transfer system. The variable air volume control method (hereinafter referred to as the VAV method), which enables energy-saving operation, has many advantages compared to the system and the fractional arrangement method of packaged air conditioners, and is therefore widely used in building air conditioning. It is possible to independently control the temperature of each room with a different heat load, it is also possible to stop air conditioning in rooms that are not in use, and it is also possible to reduce operating costs by varying the required air volume (depending on the blower power) In addition, by considering the simultaneous usage rate, the capacity of the heat source device can be designed to be small.

There are several VAV methods, but one method is to use a diaphragm-type VAV unit. This method detects the pressure inside the duct, which changes according to the opening degree of the damper, and controls the capacity of the blower so that this value becomes the set value C:. (The air temperature inside the duct is controlled to be constant), the required capacity of the heat source equipment is reduced, and at the same time the power of the blower is reduced.

Conventional technology using a diaphragm-type V'AV unit includes Japanese Patent Application Laid-Open No. 196029/1983 and Figure 2.10 (New Edition/4th Edition/Advanced Edition) of the Refrigeration and Air Conditioning Handbook (New Edition/4th Edition/Advanced Edition) published by the Japan Refrigeration Association.
b)) is known. FIG. 1 is a system configuration diagram of these conventional air conditioners.

In C: of the same figure, 1 is a room to be air-conditioned, and here the case of four rooms is shown. 2 is an indoor unit placed in the ceiling of room 1, and air filter 3. Heat exchanger4. It is composed of a blower 5. 6 is a main duct connected to the air outlet of the indoor unit 2, 7 is four branch ducts branched from this main duct 6 according to the number of rooms, and 8 is a throttle type inserted in the middle of this branch duct 7. VAV unit, 9 is this VA
11 is a suction port provided at the bottom of the door of the room 1, 12 is a ceiling suction port provided on the ceiling of the hallway, and 13 is a suction duct that connects this ceiling suction port 12 with the suction port of the indoor unit 2. , 14 is a room controller installed in each room 1, 15 is a temperature detector installed in the main duct 6, 16 is the same (pressure detector installed in the main duct F''i≦2, and 17 is a temperature sensor installed in the main duct 6). The heat exchanger 4 (-) is a heat source device such as a connected heat pump, and 18 is a control device that controls the operation of this heat source device, the blower 5, and the damper 9.

In the conventional air conditioner configured as described above, the opening degree of the damper 9 is set to an arbitrary position (two positions) according to the temperature difference between the set temperature set by the user in each room controller 14 and the detected current air temperature. The pressure inside the main duct 6 changes depending on the opening degree of the damper 9.The pressure detector 16 detects this and adjusts the capacity of the blower 5 to reach the preset pressure. In addition, since the outlet air temperature of the heat exchanger 4 changes as the air flow rate changes, this temperature is detected by the temperature detector 15, and the heat f# machine is set to the preset air temperature. The air, which has been kept at a substantially constant temperature of +=-gM, is blown into room 1 from the air outlet 10 at an air volume that corresponds to the size of the indoor heat load. 11, flows through a space such as a hallway to the ceiling suction port 12, and returns to the indoor unit 2 again via the suction duct 13.This series of control is performed by the room control roller 14, temperature detector 15, pressure detector 16, and heat source. Detection signals from various detectors (not shown) in the machine 17 (the dual control device 18 performs optimal control).

[Problem that the invention seeks to solve]

Conventional air conditioners were configured as described above, but they were not satisfactory in terms of energy saving and comfort. For example, VAV type air conditioners are mainly used in buildings, etc., or residences in the United States.

In the former of the above usage examples, the air volume adjustment function by the unit merely increases or decreases the air volume depending on the direction of the room and the magnitude of the heat load due to the number of people in the room, etc., and maintains the room temperature in each room at a constant level. In the latter case, VAV control consisted of manually adjusting the opening of the damper or using a program timer to set back or set up the set temperature of the entire system depending on the time of day.

Setback refers to shifting the set room temperature to a lower level for a certain period of time during heating to save energy, and set-up refers to shifting the set room temperature to a slightly higher level during cooling. Although it is possible to save energy to some extent through setback/setup, it does not result in significant energy savings because zoning control (air blowing can be stopped in rooms that do not require air conditioning) is not implemented, and it is not possible to save energy manually (opening the damper from the second step). Adjusting the degree or opening and closing it is a hassle;
Furthermore, the ability control of the heat source equipment and the blower is not linked to changes in the amount of air blown, resulting in problems such as reduced efficiency and increased noise.

As mentioned above, in order to achieve detailed energy savings in a multi-room air conditioner, a controller is needed that allows easy input of room temperature settings and start/stop settings for each room.

Although the controller for multi-room air conditioners is not a duct type, it is a refrigerant piping type controller.
9-19230. Utility Model Publication No. 8581/1983 is known. This system has multiple room controllers and a main controller that also serves as a room controller, so that the main controller can change the set temperature of other rooms, and can also set the air conditioning oscillation of other rooms. This is what I did. However, the room temperature setting on the main controller could only change the temperature set on the room controller to a certain value higher or lower, and arbitrary set temperature 1: could not be changed.

The object of the present invention is to provide a VAV type air conditioner equipped with a main control roller and a room controller that is easy to operate and achieves both energy saving and comfort.

[Failure to solve the problem]

This invention (-Such an air conditioner includes a heat source machine, a transmission machine, a duct (2), a control device for controlling the operation of a plurality of inserted dampers, and a main controller and a room controller connected to this control device). (with diluted acid, the main controller (second is the operation mode switching means, room temperature setting means,
A room controller with a built-in room temperature detector (a room temperature setting means, '!1
s 2 Start/stop means are provided.

[Effect]

In this invention, the operation mode switching means has the function of stopping the operation of the heat source machine, air blower, damper, cooling, heating, air blowing, etc. via the control device, and the room temperature setting means sets the room temperature of each room to a certain value. The first starting/stopping means works to start and stop the air conditioning in each room, the room temperature changing means works to change the room temperature in that room, and the second starting/stopping means works to set the air conditioner in each room. The function is to start and stop the air conditioner.

〔Example〕

Figures 2 to 6 are drawings showing an embodiment of the air conditioner according to the present invention. Note that the overall configuration of the air conditioner is basically the same as the configuration of the conventional example shown in FIG.

FIG. 2 is a circuit diagram showing the overall electrical connections.

In the figure, reference numeral 19 denotes a main controller that sets the operating mode and the temperature of each room, and is connected to the control device 18. Similarly, the control device 181- is the room controller 1
4. Damper 9. Temperature detector 15. A pressure detector 16 is connected. 20 is a heat source device control device that controls the capacity and operation of the heat source device 17, such as a heat pump, and is connected to the control device 18. 21 is also connected to the control device 18, and is a blower control device that controls the capacity of the blower 5. It is. Control device 18. Main controller 19. Room controller 14. Heat source machine control device 1t20. The blower control device 21 is equipped with a microcomputer and exchanges information with each other using a multiplex transmission method. The control device 18 is suitable as a master device for controlling traffic at the signal at this time. In addition, the control bag mis and the heat source machine control device 20. Blower control device 2
It is also possible to configure 1 in one piece.

FIG. 3 is an external front view of the main controller 19.

In the figure, 22 is an operation mode key as an operation mode switching means, and 23 to 26 are stop/stop keys corresponding to this operation mode key.
The room number consists of LEDs (light emitting diodes) to display each mode of cooling, ventilation, and heating, and i is an LCD (liquid crystal).
A temperature display that displays the set room temperature and the on/off status of the air conditioner in each room, K - Seki are various input keys as a means of setting the room temperature, 田 is the room key, Tom is the set room temperature increase key, and KA is the set room temperature decrease key It is. 31 to 34 are keys as the first start/stop means; 31 is room 1; 32 is room 2; 33 is room 3.34
is the first start/stop key for room 4.

FIG. 4 is an external front view of the room control roller 14.

In the figure, 35 is a temperature display consisting of an LCD that displays the current room temperature, set room temperature, and air conditioner OFF state, 36 and 37 are keys for changing the room temperature, 36 is a set room temperature increase key,
37 is a set room temperature lowering key. A is a second start/stop key as a second start/stop means.

Figure 5 is a circuit diagram showing electrical connections within the main controller 19. 39 in the figure is a microcoscipiputer.
U4Q, memory 41. Tarotuku 42. Crab knit 4
3. It has a communication unit 45. The various keys 22, 28 to 34 mentioned above are connected to the input crab unit 43, and the various indicators 23 to 2 mentioned above are connected to the output crab unit 44.
7 is connected. The communication unit 45 is also connected to the control device 18 .

FIG. 6 is a circuit diagram showing electrical connections within the room controller 14. OP U in the picture, Ooba microfacility
47, memory o, crab knit 49. The output unit 501 has a communication unit 51. 52 is a room temperature detector such as a thermistor, which is connected to the input unit 49 via an A/D converter 53. Also input unit) 49
C)! The above keys A~A are connected and the output unit) 50
C is connected to the temperature indicator 35 mentioned above. Furthermore, the communication unit is connected to a control device 18 .

Next (2) The operation of the above embodiment will be explained with reference to FIG. 7. FIG. 7 is a flow chart showing an example of the operating procedure of the main controller 19. Enter the set temperature.The operation mode is set by operating the operation mode key 22 on the step tool, and the result is 23.
~26 LEDs. In step 55, the room number is selected using the room key operation 1, and the result is displayed on the left end of the temperature display 27. Step 56
Then, the set room temperature of the room selected in step 55 is entered by operating the keys 29 and 30 (2), and the result is displayed on the center left side of the temperature display 27.Steps 55 and 56 above. is repeated for all rooms (step 57).Next, in the step group, press the first start/stop key 3.
1 to 34 are used to select whether to air-condition each room or not, and the result is displayed on the right side of the temperature display 27 (2 "ON" or OFF").

The above key operation 1: input is input to the aPU 40 via the input unit 43, and the necessary information is stored in the memory 41 (2).The result of the operation is also input to the temperature display 27 via the output unit 44. and each L E D 23~2
6. Furthermore, information necessary for controlling the heat source device 17 and the like is transmitted to the control device 18 via the communication unit 45.

The above was the operating procedure for the main controller 19,
After that, operate each key 22, 28 to 34 as necessary,
It is possible to change the operating conditions, the results of which are communicated again to the control device 18 via the communication unit 45.

In the room controller 14 as well, the set room temperature of the room can be changed by operating the keys 36 and 37. , is stored in the memory 48 and output crab 5
The temperature is displayed on the temperature display 35 via 0.

It is also transmitted to the control device 18 via the communication unit 51. Furthermore, the current room temperature is detected by the room temperature detector 52 along with the two set room temperatures, and the CPU 47f is inputted via the A//D converter 53 and the input unit 49, and the memo IJ
-48 and is displayed on the temperature display 351 (2) via the output unit 50.It is also transmitted to the control device 18 via the communication unit 51.Changes in the set room temperature can be made via the main controller 19. 14, but the value operated later is stored in the memory (not shown) in the control device 18 as the new set room temperature.In addition, the information on the set room temperature in the memory 41 and the memory is stored in the set room temperature. It is rewritten at the same time every time the value changes.

Operate the air conditioner in that room using the same procedure as changing the room temperature setting.
Stopping is effected by the second start/stop key. Information generated by key operations is displayed on the right end of the temperature display 35 via the microcomputer 46, and is also transmitted to the control device 18. First start/stop keys 31 to 34 of main controller 19
As for the information on the second start/stop key 38 of the room controller, the value of whichever is operated later is transmitted to the control device 18f. For the reason mentioned above (2), it is easy to set the room temperature and change the start/stop of the room without having to go back and forth between the main controller and the room controller.

In the above embodiment, a heat pump is used as the heat source device 17, but other types of heat source devices (such as a gas furnace, a combination of a heat pump and a gas furnace, a combination of a heat pump and an electric heater, an air conditioner/freezer, etc.) are used as the heat source device 17. Possible options include assembling an air conditioner and a gas furnace, or a combination of an air conditioner and an electric heater, and auxiliary equipment used in combination with a heat source device such as a humidifier, air purifier, or total heat exchanger. It is preferable to provide the switch in the main controller 19 or the control device 18.

Further, in the above embodiment, a chamber containing a main duct 6 and a branch damper 9 may be attached to the duct, and a flexible duct may be connected from the main duct 6 in an octopus-like shape (second outlet 10 Cffl).

There are two methods for controlling the damper 9: one is to proportionally control the opening depending on the temperature difference between the room temperature and the set room temperature, and the other is to blow out an air volume that is balanced with the thermal load, and the other is to fully open or close the damper depending on the temperature difference.
There are methods for controlling the position, and any method may be used.

Furthermore, although measures against power outages were not taken into account in the above embodiments, it is preferable to connect a rechargeable battery to the main controller 190 and microcomputer 39 to protect the information stored in the memory 41 from power outages.

Alternatively, the control device 18 may be provided with an HA terminal so that one operation mode of the main controller can be operated by telephone from outside the home.

It is difficult to tell which room the main controller 19 (M No. indicates), but put a cover plate over the part of the main controller 19 that is not used daily, and write the corresponding room name on it. It will be easier to understand later.

Furthermore, in the above embodiment, one main control roller 19 and four room controllers 14 are used in the case of four-room air conditioning, but one of the four room controllers 14 controls the main controller 19. It may also be configured to function as both. In this case, the price of the entire controller will be low.

FIG. 8 is an external front view of the main controller 19 in another embodiment. 59 is the second operation mode key, (a)
and 61 are LEDs for displaying the individual operation mode, and LEDs 61 and 61 are LEDs for indicating the all-room operation mode, and both are manually switched using the second operation mode key 59.

The individual operation mode is the operation mode shown in the first invention, and the all-room operation mode is the operation mode in which all rooms are operated at the set room temperature input with key 29.30 or key 36.37, regardless of the first and second start/stop keys. This is an operation mode that air-conditions the room. This all-room operation mode is used when you want to air-condition every room, such as when you have guests at a party. Of course, the room temperature in each room can be set to the desired temperature.

〔Effect of the invention〕

As described above, according to the present invention, the main controller is provided with the operation mode switching means, the room temperature setting means, and the first start/stop means, and the room controller (provided with the two room temperature change means and the second start/stop means), We made it possible to modify the room temperature setting and turn on and off the air conditioning in each room even from the controller.
Energy-saving control can be easily performed and operability is good.

[Brief explanation of drawings]

Figure 1 is a system configuration diagram showing a conventional air conditioner, Figure 2 is a system configuration diagram showing a conventional air conditioner.
7 to 7 are diagrams explaining the first embodiment of this invention,
Figure 2 is a circuit diagram showing the electrical connections of the entire system, Figure 3 is an external front view of the main controller, Figure 4 is an external front view of the room controller, and Figure 5 is a circuit diagram showing the electrical connections inside the main controller. , Fig. 6 is a circuit diagram showing electrical connections within the room controller, Fig. 7 is a flowchart showing the operating procedure of the main controller, and Fig. 8 is an external front view of the main controller in another embodiment of the present invention (-). In the figure, 5... Blower, 6... Main duct, 7... Branch duct, 9... Damper, 14... Room controller, 17... Heat source machine, 18... Control Equipment, 19...
・Main controller, 22... Operation mode key, 2
9.36...Set temperature increase key, 30.37...Set temperature decrease key, 31-34...1st start/stop key, 38
...Second start/stop key, 52...Room temperature detector. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (11)

[Claims] (1) A heat source machine that generates hot air or cold hot air, a blower connected to this heat source machine, and a duct that is connected to this blower or the heat source machine and distributes cold and hot air to multiple rooms;
A damper for adjusting air volume placed in each branch of this duct, a control device that controls the operation of this damper and the heat source machine/blower, a main controller connected to this control device, and a main controller also connected to the control device. In an air conditioner equipped with a room controller corresponding to the damper and having a built-in room temperature detector, which is placed in each room, the main controller includes an operation mode switching means, a room temperature setting means for setting the set room temperature for each room, and a room controller for each room. The room controller is characterized by having a first starting/stopping means for turning on and off the air conditioning in the room, and a room controller including a room temperature changing means for changing the set room temperature of the room, and a second starting/stopping means for turning the room conditioning on and off for the room. air conditioner. (2) The air conditioner according to claim 1, wherein the heat source device is comprised of a heat pump, a gas furnace, an air conditioner, and an electric heater, each singly or in combination. (3) The air conditioner according to claim 1 or 2, wherein the duct is composed of a main duct and a branch duct, or is composed of an octopus-like duct. (4) Proportional control of the damper according to the difference between the room temperature and the set room temperature,
The air conditioner according to any one of claims 1 to 3, characterized in that the air conditioner is controlled by two-position control of fully open and fully closed. (5) Distribute the control device to each heat source machine and blower,
The air conditioner according to claim 1 or 4, characterized in that the main unit is an item inside the blower. (6) The air according to claim 1, characterized in that the set temperature is set to a value operated later by either the room temperature setting means of the main controller or the room temperature changing means of the room controller. harmonizer. (7) Whether to start or stop air conditioning in a certain room is characterized by a configuration in which a value operated after either the first start/stop means of the main controller or the second start/stop means of the room controller is adopted. An air conditioner according to claim 1 or 6. (8) The air conditioner according to claim 1, wherein the control device, the main controller, and the room controller each have a built-in microcomputer, and mutual signals are exchanged by multiplex transmission. (9) The air conditioner according to claim 1, wherein one room controller among the plurality of room controllers also serves as a main controller. (10) The air conditioner according to claim 1, wherein the main controller is provided with operation mode switching means including an all-room operation mode and an individual operation mode. (11) In the all room operation mode, the first start/stop means and the second
According to claim 10, the set room temperature of all rooms is controlled to the value inputted by the room temperature setting means of the main controller or the room temperature changing means of the room controller, regardless of the setting of the start/stop means. air conditioner.