JPH01260249A - Remote control device for air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to carry out an exact abnormality handling by classifying various abnormalities by rank and changing abnormality display everytime an abnormality of a high degree occurs. CONSTITUTION:A plurality of in-room units B are controlled by the control signal of a remote control switch R, and abnormality signals that are inputted are sent to the abnormality receiving means 61a of the remote control switch R. When the switch R receives this abnormality signal, judgement means 61c judges the rank of abnormality of this abnormality signal according to its degree of abnormality by the three ranks of abnormalities which are stored in rank memory means 61b and judged abnormalities are displayed as such on abnormality display means 58. And, after this, when an abnormality of a larger degree of abnormality, that is an abnormality of a higher rank is received, display switching means 61d switches the abnormality display. With this arrangement even when many kinds of abnormality are received with an increase in sensors and other instruments, it is possible to handle abnormality quickly and exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a remote control device for an air conditioner, and in particular,
This is related to measures against abnormal display.

(Prior Art) Generally, there is a multi-type air conditioner equipped with a plurality of indoor units.
Some devices have a remote control switch connected to the base, and each indoor unit is controlled as a group by control signals from the remote control switch.

On the other hand, in the above air conditioner,
As disclosed in Publication No. 27, an abnormality detector is provided, and when the abnormality detector detects various abnormalities, for example, a light emitting element provided in a remote control switch flickers due to an abnormality signal from the abnormality detector. It is configured to notify various abnormalities.

(Problem to be solved by the invention) However, in the above-mentioned air conditioner, conventionally,
Abnormality indications have been displayed using light-emitting elements, but this requires a large number of light-emitting elements to display all of the various abnormality indications.

Therefore, if an attempt is made to display an abnormality using a liquid crystal, one abnormality display section will continue to display the first abnormality that occurs, and will not display abnormalities that occur after that. For example, when an abnormality such as a gas shortage occurs, only the gas shortage is displayed, and even if a transmission abnormality occurs thereafter, the transmission abnormality is not displayed. This poses a problem in that it is not possible to know the exact abnormality. In particular, in recent years, a large number of sensors have been installed to perform precise air conditioning control, and if a small abnormality occurs and then a large abnormality occurs, it is difficult to take accurate measures. There was a problem. In addition, if the remote control switch first receives and displays a signal indicating that another indoor unit is abnormal from one indoor unit, the indoor unit that caused the abnormality will then send a signal that indicates an abnormality in its own system. Since the abnormality display does not change even after transmission, there is a problem in that it is not clear which indoor unit is abnormal.

The present invention has been made in view of the above-mentioned problems, and it is possible to accurately deal with abnormalities by classifying various abnormalities by rank and changing the abnormality display each time an abnormality with a high degree of abnormality occurs. The purpose is to

(Means for Solving the Problem) In order to achieve the above object, first, the means taken by the invention according to claim (1) is as shown in FIG. (R) is connected to the remote control switch (R) for controlling the indoor unit (B) by transmitting and receiving control signals between the indoor unit (B) and the remote control switch (R). It is a premise.

An abnormality receiving means (61a) receives the abnormal signal detected and output by the indoor unit (B), and the abnormal signal of the indoor unit (B) is classified in advance according to the degree of abnormality, and the abnormality is ranked. Rank storage means (6
l b) is provided. Furthermore, rank determining means (61c) is provided for comparing the abnormality signal of the indoor unit (B) with the abnormality rank of the rank storage means (61b) to determine the rank of the abnormality signal. In addition, due to abnormal reception by the abnormality receiving means (61a), the indoor unit
(B) An abnormality display means (58) for displaying the abnormality, and a display switching means (61a) for switching the abnormality display of the abnormality display means (58) in the order of the ranks of the abnormalities determined by the rank determination means (61c). The structure is as follows.

In addition, the means taken by the invention according to claim (2) are defined in claim (2).
In the invention according to 1), a plurality of indoor units (B) are provided and are configured to be controlled by a common remote control switch (R). on the other hand,
The rank storage means (6l b) stores three ranks,
The first rank, which has the highest degree of abnormality, corresponds to an abnormality in its own system due to the abnormal signal from the indoor unit (B) that caused the abnormality, and the second rank, which has a smaller degree of abnormality than the first rank, refers to the indoor unit (B) that caused the abnormality. ) Indoor units other than (B).

(B) The third rank, which has the lowest degree of abnormality, is classified as an alarm abnormality due to an abnormality signal of the alarm, and the display switching means (61d) selects the rank with the highest degree of abnormality. It is configured to switch the display in response to an abnormal signal.

(Function) With the above configuration, in the inventions according to claims (1) and (2), the indoor unit (B) is controlled by the control signal of the remote control switch (R), and the input signal to the indoor unit (B) is controlled by the control signal of the remote control switch (R). The abnormality signal generated is transmitted to the abnormality receiving means (61a) of the remote control switch (R). On the other hand, the rank storage means (61b) of the remote control switch (R) stores the ranks of the abnormal signals, for example, three ranks, and upon receiving the abnormal signal, the rank determining means stores the ranks of the abnormal signals. (61C)
is determined according to the degree of abnormality, and the abnormality display means (58) displays the abnormality. Then, when a higher degree of abnormality is received thereafter, the display switching means (61d) switches the abnormality display. For example, if a transmission abnormality signal is received after an abnormality indicating gas shortage is displayed, the display is switched to the transmission abnormality.

(Effect of the invention) Therefore, according to the inventions of claims (1) and (2),
Each time an abnormality signal with a high degree of abnormality is received, the abnormality display is switched to an abnormality display with a high degree of abnormality.
It is possible to quickly and accurately determine the abnormality in response to the above abnormality display, and to take accurate measures.
After receiving an error signal from another system indicating that another indoor unit (CB) has caused an error from the indoor unit (B) of the same
), the display switches to the own system abnormality display, so that it is possible to accurately know which indoor unit CB) is abnormal, and to take prompt action. In particular, when the number of sensors increases and many types of abnormality signals are received, accurate abnormality processing can be performed.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 2 shows the refrigerant piping system of the multi-type air conditioner (1) according to the invention of claims (1) and (2).
For example, A) is an outdoor unit installed on the roof of a high-rise building, and (B) is an indoor unit placed inside a high-rise building, where multiple indoor units (B), (B), etc. It is connected in parallel to the outdoor unit (A). Inside the outdoor unit (A), there is a compressor (11), an oil separator (12) that separates oil from the gas discharged from the compressor (11), and a solid line in the figure during heating operation. The outdoor heat exchanger (14) is equipped with a four-way switching valve (13) that switches as shown by the broken line in the figure during cooling operation, and a fan (14a), and serves as a condenser during cooling operation and as an evaporator during heating operation.
, a subcooling coil (15), an outdoor electric expansion valve (16) that adjusts the refrigerant flow rate during cooling operation and throttles the refrigerant during heating operation, a receiver (17) that stores liquefied refrigerant, and an accumulator. (18) is built in as the main actuator, and each actuator (
11) to (18)) are connected to each other through refrigerant piping (2) so that refrigerant can flow therethrough. Further, the compressor (11) is
The capacity is adjusted to full capacity by the first compressor (11a), whose capacity is adjusted by an inverter (3a) whose output frequency is variably switched in 10Hz increments in the range of 30 to 70Hz, and by the unloader (3b), which operates depending on the pilot pressure. Load (1
The second compressor (1lb), which is adjusted in two stages: 00%) state and unloaded (50%) state, is connected to the check valve (2a).
) are connected in parallel.

On the other hand, the indoor units (B), CB), etc. have the same configuration, and each has a fan (4a) and an indoor heat exchanger (4a) that serves as an evaporator during cooling operation and as a condenser during heating operation.
), (4),..., and the indoor heat exchanger (
4), (4),...
1), (21),..., actuator 1
an indoor electric expansion valve (41) that adjusts the flow rate of refrigerant during heating operation and throttles the refrigerant during cooling operation;
(41), . . . are interposed, and the refrigerant branch pipes (21), (21), . (A
) is connected to the refrigerant pipe (2). In addition, the air conditioner (1) is equipped with many sensors, (T
HI) is placed at the air suction port of each indoor heat exchanger (4), and a temperature sensor that detects the suction temperature, (TH2) and (
TH3) is a temperature sensor that detects the temperature of the liquid side and gas side piping of each indoor heat exchanger (4), (TH4) is a temperature sensor that detects the temperature of the discharge pipe of the compressor (11), (
TH5) is a temperature sensor that detects the evaporation temperature of the outdoor heat exchanger (14) during heating operation, and (TH6) is a temperature sensor that detects the evaporation temperature of the outdoor heat exchanger (14) during heating operation.
) Temperature sensor that detects the temperature of the intake gas, (TH7)
(PS) is a temperature sensor that detects the outside air temperature near the outdoor heat exchanger (14), and (PS) is a pressure sensor that detects the discharge gas pressure during heating operation and the intake gas pressure during cooling operation.

In addition, in Fig. 2, various auxiliary actuators are provided in addition to the above-mentioned main actuators.
3a) is the bypass circuit (23) of the second compressor (1lb).
) is an unloader solenoid valve that is "open" when the second compressor (1lb) is stopped and unloaded, and "closed" when it is fully loaded, and is connected to the bypass circuit (23). A capillary tube (23b) is interposed therebetween. (24a) is installed in the pressure equalizing hot gas bypass circuit (24) that connects the refrigerant pipe (2) on the discharge side and the refrigerant pipe (2) on the suction side, and is used during low load during cooling operation and during outdoor heat exchanger operation. (14) This is a hot gas solenoid valve that opens during defrosting operation. Further, (25) is a bypass circuit for heating overload control, and the bypass circuit (25) is a heating overload control bypass circuit.
) includes an auxiliary capacitor (25a) and a first check valve (25a).
5b), a high-pressure control valve (25c) that opens when the refrigerant pressure is high, and a second check valve (25d) are connected in series, and some of them are equipped with a valve to prevent liquid sealing when the operation is stopped. The liquid seal prevention bypass circuits (26) and (27) are connected to the third check valve (2).
6a) and a capillary tube (27a).

Furthermore, (28) is a liquid injection bypass circuit for adjusting the degree of superheating of intake gas during cooling/heating operation, and the liquid injection bypass circuit (
28) includes an injection solenoid valve (28a) that opens and closes in conjunction with the on/off of the compressor (11), and an injection solenoid valve (28a) that opens and closes in accordance with the degree of superheating of the intake gas detected by the temperature-sensitive cylinder (2b). A regulated automatic expansion valve (28b) is provided.

In Fig. 2, (HPS) is a high pressure switch for protecting the compressor, and (SP) is a service port.

The actuators of the electric expansion valves (16), (4'l), fans (4a), (14a), etc. are configured to be controlled by control signals from a remote control switch (R), which will be described later. .

FIG. 3 shows the control system of the air conditioner (1), which includes a plurality of indoor units (B).

The control units (not shown) built in B), . . . are individually connected to the control units (not shown) built in the outdoor unit (A) through signal lines. Furthermore, the plurality of indoor units (B), (B)
,..., a representative indoor unit (BO) (base unit) is determined in advance, and a remote control switch (R) is connected to the representative indoor unit (BO) by a signal line, and the above-mentioned Other indoor units (B), (B), ... (slave units) are sequentially connected to the representative indoor unit (BO) by signal lines, and the control signal of the remote control switch (R) is transmitted to each indoor unit (BO). ).

(B), (B), . . . and each indoor unit (BO), (B), (B), . .
Each indoor unit (B), (B), . . . is controlled as a group.

Figure 4 shows the display device (5) of the remote control switch (R), and Figure 5 shows the control unit (6).
The display device (5) is configured to display the set temperature and operation mode of each indoor unit (B), '(B), . . . on a liquid crystal display. The display device (5) includes, from the left side of FIG. Error code number or representative indoor unit when an error occurs (
The abnormality code display section (BO) switches and displays the suction temperature (BO).
53), Temperature display section (5, 3) that switches and displays the set temperature or operation stop operation of the indoor unit (B), (B), ... by the timer time set by the important timer, and displays the wind direction and flap position. an instruction display section (55) that displays the set air volume, filter cleaning request, etc.
) are formed in order. Furthermore, a mode display section (56) for displaying status modes such as cooling operation and heating operation is provided at the top of the display device (5), and an operation lamp (57) for indicating operation/stop status is provided. The unit display section (51), the abnormality code display section (52), and the temperature display section (53) are configured to display characters and numbers using a 7-segment display or the like.

The control unit (6) is provided with a main CPU (61) which is a central processing unit, and the main CPU (61) includes a representative indoor unit (BO), a rectifier circuit (62a), a smoothing circuit (62b), etc. Connected and powered via.

Furthermore, the display device (5) is connected to the main CPU (61) via a signal line, and various display signals such as set temperature are sent from the main CPU (61) to the display device (5).
), and a control switch group (63) is connected to the main CPU (61). The control switch group (63) includes indoor units (B), (B), .
... operation stop switch (63a), set temperature and timer up switch (63b), and down switch (63b)
63c), a debug switch (63d), and other switches.

Further, a control signal transmission circuit (64) is connected to the main CPU (61), and the transmission circuit (64) is connected to the representative indoor unit (B) via the rectifier circuit (62a).
O). The transmission circuit (64) receives a control signal in response to a reception request signal output from a transmission CPU (64a), a constant voltage circuit (64b), a variable transformer (64c), and a representative indoor unit (BO). The reception command signal is sent to the transmission CPU (64a).
A reception discrimination circuit (64d) is provided which outputs an output to the
The above transmission CPU (64a) is the main CPU (61)
In addition to sending and receiving control signals to and from the indoor unit (B
), (B), . . . control signals are exchanged between them.

On the other hand, the main CPU (61) receives abnormality signals detected and output by the indoor units (B), (B), etc. such as gas shortage or transmission abnormality with the outdoor unit (A). Abnormality receiving means (61a) is provided. Furthermore, the main CPU (61) is provided with abnormal signal rank storage means (61b), rank determination means (61e), and display switching means (61d). The rank storage means (61b) stores the indoor units (B), (B),
The abnormal signals of ... are classified in advance according to the degree of abnormality, and three ranks of abnormalities are stored.The first rank has the highest degree of abnormality and is the abnormal signal from the indoor unit (B) that caused the abnormality. For example, when a transmission abnormality occurs between the representative indoor unit (BO) and the outdoor unit (A) and the abnormal signal output from the representative indoor unit (BO) is received, the own system The setting is abnormal.

The second rank has a lower degree of abnormality than the first rank, and is an abnormality in other systems due to abnormal signals from indoor units (B), (B), etc. other than the indoor unit (B) that caused the abnormality, For example, as mentioned above, the representative indoor team (
If a transmission abnormality occurs between the outdoor unit (A) and the outdoor unit (A), the outdoor unit (A) will communicate with other indoor units (B),
It also outputs an abnormal signal to (B), . . . , and among the other indoor units CB), (B), .
B) is set as an abnormality in other systems when the abnormality signal output by the system is received. Further, the third rank has the lowest degree of abnormality, and is set as an abnormality when an abnormality signal such as a warning such as a gas shortage is received.

The rank determining means (61c) includes an abnormality receiving means (61
The abnormality signal received by a) is compared with the rank of the rank storage means (61b) to determine which rank it corresponds to. The unit display section (51) and the abnormality code display section (52) are an abnormality display means (58) that displays a unit number and an abnormality code based on the abnormality signal received by the abnormality reception means (61a).
It consists of Further, the display switching means (61d) is configured to switch the display of the abnormality display means (58) in the order of the ranks of the abnormalities determined by the rank determining means (61c), for example, the abnormality of the second rank. When a first rank abnormality signal is received after receiving the signal, the system is configured to switch from displaying a code indicating an abnormality in another system to displaying a code indicating an abnormality in its own system together with the unit number.

Next, the operation of the air conditioner (1) will be explained.

First, during the cooling/heating operation of the air conditioner (1), each indoor unit (B), (B), .

(4) Refrigerant flow rate or throttle and indoor fan (4)
The air volume of a), (4a), . . . is controlled. - On the other hand, the outdoor unit (A) is the indoor unit (B),...
The refrigerant flow rate of the outdoor heat exchanger (14) and the capacity of the compressor (11) are controlled according to the operating state of the air conditioner, and appropriate operation control is performed according to the air conditioning load in each room.

Next, the structure and operation of the invention according to claims (1) and (a) will be explained based on the state transition diagram of FIG. 6 and the control flow diagram of FIG. 7.

First, the outdoor unit (A) and each indoor unit (B),
(B) When the... are operating normally (
Figure 6 Status ■), remote control switch (R)
The control routine shown in FIG. 7 is repeated at a predetermined timing, and it is determined in step STI whether or not the operation is stopped, and if the operation is in operation, the process moves to step ST2, and the abnormality display means (
58) is displaying an error in its own system, and if it is not displaying it, it moves to step ST3 and receives an error signal in its own system from any of the indoor units (B), (B), ... If it has not been received, the process moves to step ST4. Then, it is determined whether or not the abnormality display means (58) is displaying an abnormality in another system. If not, the process moves to step ST5, and any indoor unit (B)
, (B), . . . determine whether or not an abnormality signal from another system has been received. If not, the process moves to step ST6, and it is determined whether or not the abnormality display means (58) is displaying an alarm abnormality. If it is not displayed, step ST7
Move to. In this step ST7, it is determined whether or not an alarm abnormality signal has been received from any of the indoor units (B), (B), . In (58), the process moves to step ST1 without any display, and the above-described operation is repeated.

During this operation, for example, when the indoor unit (B) outputs an alarm abnormal signal indicating a lack of gas, the abnormal signal is received by the abnormality receiving means (61a), and the rank determining means (61c) receives the abnormal signal.
determines the rank of the abnormality, that is, in step ST7, it is determined whether or not it is an abnormal signal of the third rank, and if it is an abnormal signal of the third rank, the steps from step ST7 to step 9 are performed.
Then, the display switching means (61d) operates and displays, for example, the number 1 of the indoor unit (B) that outputs the abnormal signal on the unit display section (51) and the abnormal code "UO" on the abnormal code display section (52). ” are displayed respectively (state ■ in Figure 6).

After this, the process returns to step STI and the above-mentioned operation is repeated. At this time, since an alarm abnormality is displayed in step ST6, the process returns from step ST6 to step ST1, and an abnormality signal of another rank is input. The alarm abnormality display will continue to be displayed until there is no problem and the operation is stopped. When the operation is stopped, the process moves from step ST1 to step ST8 and the display is turned off.

In addition, in the state where the abnormality display of the above alarm is performed,
When an abnormality signal from another system is received from one indoor unit (B), for example, a transmission abnormality occurs between the representative indoor unit (BO) and the outdoor unit (A), and the abnormal signal of this transmission abnormality is transmitted to the second indoor unit (BO) and the outdoor unit (A). (B) outputs, that is, in the second indoor unit (B), the abnormality is in another system, so when it outputs an abnormality signal indicating an abnormality in another system, step S
At T5, the rank determining means (61c) determines the second rank. Then, from step ST5, step 5T
Moving to IO, the display switching means (61d) switches the unit number on the unit display section (51) to "2" and the error code on the error code display section (52) to "U9", and returns to step ST1. (Figure 6 state ■). Then, the process returns from step ST4 to step STI and continues to display abnormalities in other systems until the operation is stopped.

After that, when the transmission order with the remote control switch (R) becomes the representative indoor unit (BO) that caused the abnormality, the indoor unit (B) outputs an abnormality signal indicating its own system abnormality because the abnormality is its own. become. When the abnormality signal of this own system abnormality is received, step ST3
The rank determining means (61c) determines that the rank is the first rank, and the process moves from step ST3 to step 5T11, where the display switching means (61d) sets the unit number on the unit display section (51) to "1" and changes the unit number on the unit display section (51) to "1". The abnormality code (52) is switched to "U4" and the process returns to step STI (state 2 in FIG. 6).

Thereafter, the process returns from step ST2 to step STI until the operation is stopped, and the display of the own system abnormality continues.

In addition, the above operation is performed after receiving the third rank abnormal signal.
We have explained the case where abnormal signals with large abnormality degrees are received one after another, but first, when an abnormal signal from another system is received, the display switches from the other system abnormality to the own system abnormality (Status ■-■-■ in Figure 6). , Also, if the own system abnormality signal is received first, only the relevant own system abnormality will be displayed.
Also, when the own system abnormal signal is received from the alarm abnormal signal, the alarm display will switch to the own system abnormal display (
Figure 6 state ■→■→■).

Therefore, each time an abnormal signal with a large degree of abnormality is received,
The error display will be changed to an error display with a higher degree of error.
In response to the above-mentioned abnormality display, it is possible to quickly and accurately determine the abnormality, and to take accurate countermeasures. In particular, when the number of sensors increases and many types of abnormality signals are received, accurate abnormality processing can be performed.

In this embodiment, the abnormal signal is divided into three ranks, but it may be divided into two ranks or four or more ranks.

Further, the present invention is not limited to the multi-type air conditioner (1).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the invention according to claims (1) and (2). 2 to 7 show embodiments of the invention according to claims (1) and (2), in which FIG. 2 is a refrigerant circuit diagram of the air conditioner, FIG. 3 is a control system diagram thereof, and FIG. is a front view of the display device of the remote control switch,
FIG. 5 is a circuit block diagram of the control unit. FIG. 6 is a state transition diagram of abnormality display, and FIG. 7 is a control flow diagram thereof. (1)...Air conditioner, (4)...Indoor heat exchanger, (5)...Display device, (6)...Control unit, (14)...Outdoor heat exchanger, (51)...
Unit display section, (52)...Error code display section, (
58)...Abnormality display means, (61)...Main CP
U, (A)...Outdoor unit, (B)...Indoor unit, (R) Stop Figure 6

Claims (2)

[Claims] (1) A remote control switch (R) is connected to the indoor unit (B), and control signals are sent and received between the indoor unit (B) and the remote control switch (R) to control the indoor unit (B). In the remote control device for an air conditioner, the abnormality receiving means (61a) receives an abnormality signal detected and output by the indoor unit (B), and the abnormality signal of the indoor unit (B) is detected and outputted in advance. Rank storage means (61b) for classifying the abnormality according to its degree and storing the abnormality rank;
Abnormal signal of indoor unit (B) and rank storage means (
rank determination means (61c) for determining the rank of the abnormality signal by comparing it with the abnormality rank of the above-mentioned abnormality signal (61b);
an abnormality display means (58) for displaying the abnormality of the abnormality; and a display switching means (6) for switching the abnormality display of the abnormality display means (58) in order of the rank of the abnormality determined by the rank determination means (61c).
1d) A remote control device for an air conditioner, comprising: (2) A plurality of indoor units (B) are provided and are controlled by a common remote control switch (R), while a rank storage means (61b) stores three ranks, and ranks the first rank with the highest degree of abnormality. The rank refers to an abnormality in the own system due to an abnormal signal from the indoor unit (B) that caused the abnormality, and the second rank, which has a lower degree of abnormality than the first rank, refers to an indoor unit other than the indoor unit (B) that caused the abnormality.
), (B), . . . The third rank, which has the lowest degree of abnormality, is classified as an alarm abnormality caused by an abnormality signal of the alarm, and the display switching means (61d) indicates that the degree of abnormality is large. 2. The remote control device for an air conditioner according to claim 1, wherein the display is switched in response to a rank abnormality signal.