JPH01256750A - Remote control device for air-conditioning device - Google Patents

Abstract

PURPOSE:To enable easy finding of the cause of an abnormality by a method wherein, an abnormal operation of an indoor unit, the memory content of a memory means is displayed. CONSTITUTION:By means of a control signal from a remote control switch R, an indoor unit B is controlled. An abnormal code, e.g., deficiency of gas, is displayed on, for example, an abnormal code display part 52 of a state amount display part 58 in the remote control switch R, and set temperature is displayed in a temperature display part 53 by means of a state amount data signal from a state amount output means 61a. Meanwhile, the operation state of the indoor unit B is stored in a memory means 61b. During abnormal operation, when a switching means 63d is switched, a memory content output means 61c reads out the memory content of the memory means 61b, and an address is displayed on an abnormal code display part 52 and address operation information on a temperature display part 53. The address and the address information are varied successively, by varying means 63c and 63d to detect operation information.

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 relates to display measures.

(Prior Art) Generally, there is a multi-type air conditioner equipped with a plurality of indoor units.
Some indoor units L are group-controlled by connecting a remote control switch to the base and controlling 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,
Since it merely displays whether or not an abnormality has occurred, there is a problem in that the cause of the abnormality cannot be clearly known. In other words, the above remote control switch R
Although the AM records operating information for each device, even if an abnormality such as a gas shortage is detected, the cause of the gas shortage cannot be known, and it is not possible to take prompt action.

In particular, in recent years, efforts have been made to improve comfort through precise air conditioning control, and as the number of control devices has increased and structures have become more complex, there has been a problem in that it takes a long time to understand the cause of an abnormality. Ta.

The present invention has been made in view of the above, and takes advantage of the fact that the display part of the remote control switch is formed of a liquid crystal display, which improves the display mode, and makes it possible to display the contents of the RAM to eliminate the cause of the abnormality. The purpose is to make it easy to understand.

(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) and the indoor unit (B) is controlled by transmitting and receiving control signals between the remote control switch (R) and the indoor unit (B). It is a premise.

A state quantity display section (58) that displays state quantity data such as the set temperature of the indoor unit (B), and a state quantity output means (61a) that outputs a state quantity data signal to the state quantity display section (58). ) is provided. Furthermore, storage means (61b) for storing operating information of the indoor unit (B) is provided.
') and storage content output means (61c) for outputting a storage content signal so as to extract the storage content of the storage unit (61b) and display it on the state quantity display section (58). In addition, switching means () for switching the output signal outputted to the state quantity display section (58) to either the state quantity data signal of the state quantity output means (61a) or the stored content signal of the stored content output means (61C); 63d), and changing means (63c) for changing the storage content signal output by the storage outputting means (61b).

63d).

In addition, the means taken by the invention according to claim (2) are
In the invention according to 1), the state quantity display means (58)
It is composed of an abnormality code display section (52) that displays the abnormality code of the indoor unit (B), and a temperature display section (53) that displays the set temperature of the indoor unit (B). ) is configured to output the address of the storage area in the storage means (61b) to the abnormality code display section (52), and output the operating information stored at the address to the temperature display section (53), respectively.

(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 indoor unit (B) is controlled by the control signal of the remote control switch (R). State quantity display section (
For example, an abnormality code such as gas shortage is displayed on the abnormality code display section (52) of 58), and a set temperature is displayed on the temperature display section (53) based on the state quantity data signal of the state quantity output means (61a).

On the other hand, the storage means (61b) stores the operating state of the indoor unit (B), and when the switching means (63d) is switched in the event of an abnormality, the stored content output means (61b) is stored.
1c) retrieves the stored contents of the storage means (61b) and inputs the address to the abnormal code display section (52) and the temperature display section (52).
53) will display the driving information for the address.

Then, the address and driving information are changed by the changing means (63c,
63d), the service personnel etc. will know the driving information by sequentially changing it.

(Effect of the invention) Therefore, according to the invention according to claims (1) and (a), when the indoor unit (B) is abnormal, the storage means (61b)
Since the memory contents can be retrieved and known, the cause of the abnormality can be accurately determined.

In particular, even if the number of control devices increases, the causes of abnormalities can be accurately grasped, so various abnormalities can be dealt with quickly and easily.

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

FIG. 2 shows a refrigerant piping system of a multi-type air conditioner (1) according to the invention of claims (1) and ('2J),
For example, (A) is an outdoor unit installed on the roof of a high-rise building, (B) is an indoor unit placed inside the high-rise building, and multiple indoor units (B), (B), ・
... are connected in parallel to the outdoor unit (A). A compressor (11) is installed inside the outdoor unit (A).
, an oil separator (12) that separates oil from the gas discharged from the compressor (11), and a four-way separator (12) that switches as shown in the solid line in the figure during heating operation and as shown in the broken line in the figure during cooling operation. An outdoor heat exchanger (14) that is equipped with a switching valve (13) and a fan (14a) and serves as a condenser during cooling operation and an evaporator during heating operation, and a subcooling coil (15) that controls the refrigerant flow rate during cooling operation. The main actuators are an outdoor electric expansion valve (16) that throttles the refrigerant during heating operation, a receiver (17) that stores liquefied refrigerant, and an accumulator (18). The actuators (11) to (18)) are each connected through a refrigerant pipe (2) so that refrigerant can flow therethrough. In addition, the above compressor (1
1) The output frequency is 10Hz in the range of 30 to 70Hz.
The first compressor (11a), whose capacity is adjusted by an inverter (3a) that is variably switched at each time, and the unloader (3b), which operates depending on the pilot pressure level, adjust the capacity between the full load (100%) state and the unload (100%) state. A second compressor (1lb) which is adjusted in two stages (50%) is connected in parallel via a check valve (2a).

On the other hand, the indoor units (B), (B), ... have the same configuration, and each has a fan (4a) and an indoor heat exchanger (4) that serves as an evaporator during cooling operation and a condenser during heating operation. , (4), ..., and the indoor heat exchanger (
Refrigerant branch pipe (21) connected to 4), (4), ...
, (21), . . . include indoor electric expansion valves (41), (41), which are one of the actuators and which adjust the refrigerant flow rate during heating operation and perform a throttle action on the refrigerant during cooling operation.
... are interposed, and the refrigerant branch pipe (21),
(21), . . . are collected in a communication pipe (22) and connected to the refrigerant pipe (2) of the outdoor unit (A) via a manual shutoff valve (22a). In addition, air conditioner (1
) is equipped with many sensors, and (TI(1)
are temperature sensors (TI2) and (TI3) arranged at the air suction port of each indoor heat exchanger (4) to detect the suction temperature.
) is a temperature sensor that detects the wave harmonics of each indoor heat exchanger (4) and the temperature of the gas side pipe, (TI4) is a temperature sensor that detects the discharge pipe temperature of the compressor (11), and (TI5) is a temperature sensor that detects the temperature of the discharge pipe of the compressor (11).
) is a temperature sensor that detects the evaporation temperature of the outdoor heat exchanger (14) during heating operation, (TI6) is a temperature sensor that detects the temperature of the suction gas of the compressor (11), and (TI7) is the temperature sensor that detects the temperature of the outdoor heat exchanger (14). 14) Temperature sensor that detects the outside temperature in the vicinity, (
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 a 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. (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)
includes an auxiliary capacitor (25a) and a first check valve (25a).
b), a high pressure control valve (25c) that opens when the pressure of the refrigerant is high;
A second check valve (25d) is connected in series,
A liquid seal prevention bypass circuit (26), (27) for preventing a liquid seal when the operation is stopped is connected to a second part via a third check valve (26a) and a capillary tube (27a). There is.

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 a solenoid valve (28a) for injector 3 that opens and closes in conjunction with the on/off of the compressor (11), and a solenoid valve (28a) that opens and closes in conjunction with the on/off of the compressor (11), and a solenoid valve that opens and closes in accordance with the degree of superheat of the intake gas detected by the temperature sensing tube (2b). An automatic expansion valve (28b) whose temperature is adjusted is provided.

Further, 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), (41), fans (14a), (4a), 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), ..., the representative indoor unit (BO) (
The main indoor unit (BO) is specified, and the representative indoor unit (BO)
A remote control switch (R) is connected to the unit by a signal line, and other indoor units (B), (B), ... (slave units) are sequentially connected to the representative indoor unit (BO) by signal lines. The remote control switch (R) transmits the control signal to the representative indoor unit (BO) and the indoor units (B), (B),..., and each indoor unit (BO), (B),...・I am trying to control the 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 display section that switches and displays the error code number when an error occurs or the suction temperature of the representative indoor unit (BO) <53), the set temperature of the indoor unit (B), (B), etc., or the operation stoppage A temperature display section (53) that switches and displays the timer time set by the operation on/off timer, a wind direction display section (54) that displays the wind direction and flap position, and an instruction display section (55) that displays the set air volume, filter cleaning request, etc. ) are formed in order. Furthermore, the above display device (
5) is provided with a mode display section (56) that displays status modes such as cooling operation and heating operation, and an operation lamp (57) that indicates operation/stop status. (51), abnormal code display section (
52) and the temperature display section (53) are configured to display characters and numbers using a 7-segment display, etc., and the abnormality code display section (52) and the temperature display section (53) constitute a state quantity display section (58). are doing.

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).
A control switch group (63) is connected to the main CPIJ (R). The control switch group (63) includes an operation stop switch (63a) for indoor units (B), (B), ..., an up switch (63b) and a down switch (63c) for set temperature and timer.
), 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 (BO) via the rectifier circuit (62a).
)It is connected to the. The transmission circuit (64) is a transmission C
Upon receiving the reception request signals output by the PU (64a), constant voltage circuit (64b), variable transformer (64c), and representative indoor unit (BO), it is determined whether or not to receive a control signal, and the reception command signal is transmitted as described above. A reception discrimination circuit (64d) is provided to output to the transmission CPU (64a), and the transmission CPU (64a) sends and receives control signals to and from the main CPU (61), and the indoor unit CB).
(B), . . . control signals are exchanged between them.

On the other hand, the main CPU (61) has an indoor unit (B) in the abnormality code display section (52).

(B) Outputs a state quantity data signal, which is an abnormality code signal such as a gas shortage signal or a suction temperature signal inputted from . State quantity output means (61a) for outputting a state quantity data signal which is a temperature signal or a set time to a timer
is provided.

Furthermore, the main CPU (61) is equipped with an indoor unit (
A RAM (61b) is provided as a storage means for storing operation information of B), (B), etc., such as the opening degree of the electric expansion valve (41), in a storage area at a predetermined address. A storage content output means (61c) is provided for extracting and outputting the storage content of (61b).

The memory content output means (61c) is the RAM (61
It is configured to output the address of the storage area in b) to the abnormality code display section (52) and the operating information stored at the address to the temperature display section (53).

The debug switch (63d) outputs the state quantity data signal of the state quantity output means (61a) to the abnormality code display section (52) and temperature display section (53), and the storage contents output means (61c). ), and when the debug switch (63d) is short-circuited, for example, the error code display section (
52), and the operating information "11" is displayed on the temperature display section (53), so that a service person or the like can compare the displayed contents with the contents sheet to know the stored contents. Also, the above up switch (6
3b) and the down switch (63c) output the memory content output by the memory content output means (61c), that is, the RA
It constitutes a changing means for changing the address of M (63b).

Incidentally, (63e) in FIG. 5 is a display changeover switch of the temperature display section (53), which is used to switch the display to display either the set temperature or the set time.

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)
a ) + (4a) The air volume of . . . is controlled. - Indoor unit (A) is each indoor unit CB)
, (B), depending on the operating status of the outdoor heat exchanger (1
4), the refrigerant flow rate and the capacity of the compressor (11) are controlled to perform appropriate operation control according to the air conditioning load in each room.

Next, the display operations of the abnormality code display section (52) and temperature display section (53) in the remote control switch (R) will be explained based on the control flow.

The control flow in FIG. 6 shows the abnormality code display section (52), and the control flow in FIG. 7 shows the temperature display section (53). First, when the abnormality code display section (52) starts, step ST1 , set the debug switch (63
d) determine whether or not the circuit is shorted. When the debug switch (63d) is not short-circuited, it is in a normal operating state, and the determination in step ST1 is "No", and the process moves to step ST2, where it is determined whether or not an abnormal signal is input, and whether or not an abnormal signal is input. If no signal is input, the process moves to step ST3, and step 7! ! While the suction temperature of the representative indoor unit (BO) is displayed by the output signal of the quantity output means (61a), when an abnormal signal such as gas shortage is input, the process moves from step ST2 to step ST4, and an abnormal code corresponding to the abnormal condition is input. , for example, "UOo" etc. will be displayed.

In addition, in the temperature display section (53), after the start, in step 5T11, the debug switch (63d
) is short-circuited, and if it is not short-circuited, the process moves to step 5T12, and the display changeover switch - (63
g) Determine whether it is a temperature display or a time display. Then, in the case of temperature display, the process moves to step 5T13, and the set temperature is displayed by the output signal of the state quantity output means (61a), while
In the case of time display, the process moves to step 5T14, and the remaining time of the set time is displayed.

Next, when an abnormality occurs in indoor units (B), (B), etc., service personnel etc.
), the determination in steps ST1 and STI 1 becomes "YES", and steps ST5 and 5
I will move on to T15.

Then, in steps ST5 and 5T15, the address of the RAM (61b) is displayed on the abnormal code display section (52) by the output signal of the memory content output means (61c).
The temperature display section (53) will display the operating information for each address. For example, the address ``1'' is displayed as ``11'', and a service person or the like checks the contents table to know the operating state. Then, the above address is changed together with the operating information of the address by the up switch (63b) and down switch (63c).

Therefore, since the contents stored in the RAM (61b) can be known when an abnormality occurs, the cause of the abnormality can be quickly grasped, and prompt and accurate measures can be taken.

Although the present embodiment describes a multi-type air conditioner, it may also include one indoor unit (B).

In addition, the state quantity display section (58) includes an abnormality code display section (52).
) and the temperature display section (53).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the invention according to claim (1) and C'2J. Figures 2 to 7 are claimed in claim (1).
FIG. 2 is a refrigerant circuit diagram of an air conditioner, FIG. 3 is a control system diagram of the same, FIG. 4 is a front view of a display device of a remote control switch, and FIG. The figure is a circuit block diagram of the control unit. Figures 6 and 7 are control flow diagrams. (1) Air conditioner, (5) Display device, (
6)...Control unit, (14)...Outdoor heat exchanger, (51)...Unit display, (52)...
...Abnormal code display section, (53)...Temperature display section, (
61) --- Main CPU, (61a) = state quantity output means, (61b) = RAM, (61c) = memory content output means, (63b) = up switch, (6
3c)...Down switch, (63d)...Debug switch, (63e)...Display changeover switch. Patent Applicant Daikin Industries, Ltd. Agent Patent Attorney Tomoaki Numami "1" Figure 3 '13 (Temperature indicator) Figure 4 Figure 6 Figure 7

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 remote control switch (R) and the indoor unit (B) to control the indoor unit (B). In the remote control device for an air conditioner, the state quantity display section (58) displays state quantity data such as the set temperature of the indoor unit (B), and the state quantity display section (58).
state quantity output means (58) for outputting a state quantity data signal to
61a), a storage means (61b) for storing operating information of the indoor unit (B), and a storage means (61b) for retrieving the storage contents of the storage means (61b) and displaying them on the state quantity display section (58). Memory content output means (61) that outputs a signal
c), and switching means for switching the output signal output to the state quantity display section (58) to either the state quantity data signal of the state quantity output means (61a) or the stored content signal of the stored content output means (61c). (63d) and the memory output means (
changing means (61b) for changing the storage content signal output by
63c, 63d). (2) The state quantity display means (58) is the indoor unit (B)
an abnormality code display section (52) that displays an abnormality code;
Temperature display section (
53), while the memory content output means (61
c) The storage means (61b) is stored in the abnormal code display section (52).
The address of the storage area in the temperature display section (53)
The remote control device for an air conditioner according to claim 1, wherein the remote control device for an air conditioner is configured to output the operating information stored in the address at each address.