KR900006504B1 - Air conditioner with a energy switch - Google Patents

Abstract

The air conditioner comprises a control portion and a refrigeration system. A compressor, a condenser, an expandsion device and an evaporator are connected in a refrigerant flow relationship. The control portion compares the temperature measured by a sensor with that set by a temperature setting switching. The compressor is stopped when the room temperature rises higher than the set temperature and stopped when the room temperature falls lower than it. A special switch is installed in the control portion, and when this switch is operated, responsively the range of the temperature set by the temperature setting switch is changed lowering the upper limit of the temperature set by the temperature setting switch and raising the lower limit.

Description

Control Unit of Air Conditioner

1 is a schematic diagram of an air conditioner using an embodiment of the present invention.

2 is an electric circuit diagram used to control the air conditioner shown in FIG.

3 is similarly an electric circuit diagram used for controlling the air conditioner shown in FIG.

4 is a flowchart showing the operation during heating operation of the microprocessor shown in FIG.

5 is a conversion diagram showing a relationship other than Ts and F (Ts).

6 is a flowchart showing the operation during the cooling operation of the microprocessor shown in FIG.

7 is a conversion diagram showing the relationship between Ts and G (Ts).

8 is an explanatory diagram showing the operation or energization state of the compressors first, second, and electric heaters when the embodiment of the present invention is used.

9 is an electric circuit diagram of a control apparatus of a conventional air conditioner.

* Explanation of symbols for the main parts of the drawings

1: compressor 3: indoor side heat exchanger

5,6: Pressure reducing device 7: Outdoor side heat exchanger

9: first electric heater 10: second electric heater

The present invention relates to the control of an air conditioner in which operation is controlled based on a temperature set value of a controlled room, and particularly relates to switching of a set range width of a temperature set value. Generally, as a control apparatus of the conventional air conditioner, there existed some described in the real place 56-99334.

In FIG. 9 showing the contents of this publication, (TH) is a temperature detector for detecting the temperature of the operation chamber, (VR) is a variable resistor for setting a temperature set value, and the comparator (OP) is a resistor (R ₁₁ ). Although the reference voltage determined by (R ₁₂ ) and the voltages of the temperature detector (TH) and the variable resistor (VR) were compared to judge the operation or stop of the air conditioner, the temperature setting value of the controller is variable. It was determined by adjusting the resistance VR, and the setting range width was determined constantly by the resistance value of the variable resistor VR.

Therefore, according to the user's preference, the temperature set value may be always the maximum value or the minimum value, and heating or cooling operation more than necessary is performed, resulting in poor energy efficiency. In view of such a problem, an object of the present invention is to provide an air conditioner that prevents heating or cooling operation more than necessary by changing the setting range width of the temperature setting value.

The present invention includes a temperature detector for detecting a temperature of an operation chamber, and compares the temperature detector with a set value of the detected temperature, and installs a switch for switching a set range width of the temperature set value in an air conditioner for controlling operation. This is to prevent setting values from being set higher than necessary.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 8.

First, Figure 1 is a refrigerant circuit diagram showing an embodiment of the present invention, the compressor (1), the four sides (2), the indoor heat exchanger (3), the liquid chamber (4), the pressure reducing device (5), (6 The refrigeration cycle is constructed by contacting the outdoor heat exchanger 7 with the refrigerant pipe in an annular manner. In addition, reference numeral 8 denotes a reverse flow where the cooling air flows only when the refrigerant flows in the dotted line direction (during cooling operation).

In addition, (9) and (10) are 1st and 2nd electric heaters, and 2KW and 3KW, respectively, (11) is a blower (crossflow fan) for the indoor heat exchanger 3, (12) is an outdoor side heat exchanger (7) Blower (propeller fan). In this figure, when the four sides 2 are in the position shown, discharge refrigerant from the compressor 1 flows in the solid arrow direction so that the indoor heat exchanger 3 is a condenser and the outdoor heat exchanger 7 is an evaporator. Heating operation is performed by acting as

In addition, when the four sides 2 are switched to the positions opposite to those shown in the figure, the discharged refrigerant from the compressor 1 flows in the direction of the dotted arrow, so that the indoor side heat exchanger 3 causes the evaporator and the outdoor side heat exchange, respectively. The group 7 acts as a condenser to perform the cooling operation.

로 접속되어 있다. 더우기, 제 1 도와 동일구성요소인 압축기(1), 사방변(2), 제 1 전기히이터(9), 제 2 전기히이터(10), 실내측의 송풍기(11), 실외측의 송풍기(12)는 동일부호를 붙이고 있다 또한, 송풍기(11)는 강(H), 중(M), 약(L)로 풍속전환이 가능하고, 송풍기(12)는 강(H), 약(L)으로 풍속전환이가능하다.2 and 3 are electrical circuit diagrams used for operation control of the refrigeration cycle shown in FIG. 1, and FIG. 2 and FIG.

Is connected. Moreover, the compressor 1, the four sides 2, the 1st electric heater 9, the 2nd electric heater 10, the air blower 11 of the indoor side, the air blower 12 of the 1st degree and the same component are the same. In addition, the blower 11 is capable of switching the wind speed to steel (H), medium (M), and weak (L), and the blower (12) to steel (H) and weak (L). Wind speed can be switched.

In Figures 2 and 3, reference numeral 13 denotes a microprocessor and works together with the peripheral circuit below. The operation of the microprocessor 13 will be described later. Reference numeral 14 denotes a switching circuit, the rectifier element 15, the smoothing capacitors 16, 17, the zener diodes 18, the power transistors 19, the phase-closed contact 20, and a microprocessor at power-on. And a comparator 21 for resetting the terminal INIT of (13), a buffer 22 for supplying a constant voltage VREF having a value lower than VASS.

In addition, the terminal VDD is a negative power supply terminal. Reference numeral 23 denotes a remote control panel which separates the manual switch 24 and the changeover switch 25 from the main body of the air conditioner.

In addition, the selector switch 25 is provided with terminals A, B, and C to which the contact is switched, and when the terminal B is a neutral terminal, the contact is switched when the contact is switched to the terminal A. Automatic return to terminal (B), manual switching between terminals (B) and (C). In addition, manual switch (24) changes the temperature setting range, and changeover switch (25) is an air conditioner. This operation is to stop the operation and is separated by three wirings. Reference numerals 26 and 27 indicate light emitting elements, which are lit when the manual switch 24 and the changeover switch 25 are operated. Reference numerals 28 and 29 are relays, and the upper and lower contact pieces 20 and the upper contact pieces 30 are provided, respectively. (31) to (37) are relays which operate with signals received from terminals (D6) to (D12) of the microprocessor 13 via the buffer 38, and the upper contact piece 39 in each order, The upper contact piece 40, the upper contact piece 41, the switching contact piece 42, 43, the switching contact piece 44, 45, the upper contact piece 46, and the upper contact piece 47 are provided. Reference numeral 48 denotes a rapid heating switch, and the relays 34 and 37 are energized despite the output of the microprocessor 13. In addition, 49 and 50 are diodes for malfunction prevention. (51) to (53) and (67) are the flexibility sensors (such as thermistor thermistor) connected between the terminal A of the microprocessor 13 and the terminals D3 to D5 and D15. In order to detect the room temperature in the to-be-harvested chamber, the temperature detection of the indoor side heat exchanger 3, the temperature detection of the chamber side heat exchanger 7, and the outdoor air temperature detection of a chamber, respectively. Reference numeral 54 denotes a slide switch for setting a temperature. When an output is provided at the terminal D1 of the microprocessor 13, the scan is performed to the terminals K1 to K4 to read out the set value.

Further, (55) to (58) are diodes for preventing erroneous reading. Reference numeral 59 denotes a slide switch for setting the wind speed of the blower 11, and when there is an output at the terminal D0 of the microprocessor 13, scanning is performed at terminals Kl to K4 and the set value is read out. will be.

Further, 60 and 61 are diodes for preventing false reading. Reference numerals 62 and 63 are operation, stop switches, and selection switches for heating operation and cooling operation, respectively. In addition, 64 and 65 are diodes for preventing misreads, and 66 are manual switches. The state of the relay contact parts shown in FIGS. 2 and 3 all indicate that the relay is non-energized.

4 and 7 are flow charts showing the operation of the microprocessor 13, as shown below. However, this flowchart is a representation of the operation of a part of the air conditioner, not all of the operations. First, when the selection switch 63 for cooling operation and heating operation is set to heating operation, a "reset and star art" process will be described.

This is a star art process by power on or the like. When the power is on, an output is obtained from the comparator 21 to the terminal INIT of the microprocessor 13 to perform a reset process, and the air conditioner is stopped. In addition, even when the relay 28 is energized and the upper contact piece 26 is opened, the air conditioner thus reset is brought to a stop state.

To(=3.5도)"로 되면(YES) 전기히이터(10)의 통전을 개시하며, 이때 "Tin

Tl(=5.5)"로 상승하기 까지의 동안 전기히이터(10)의 통전을 유지한다. 또한, 실내온도(Tin)이 "Tin

To"가 아니면(NO) "Tin

T1의 상태가 되어 YES이면 전기히이터(10)이 오프되고, NO이면 리턴된다. 또한 T0,T1의 값은 이것에 한정되는 것이 아니고, 주위의 조건을 맞춰서 임의로 설정해도 좋다. 이때에 "T1

T0"로서 적당한 디퍼렌샬폭을 설정할 필요가 있다.Next, when the operation switch 62 is pressed and operation starts, the electric heater 9 (2KW) is energized to improve the occurrence of heating operation. Next, it is determined whether or not the switch 66 is ON, and when the switch 66 is ON, and the air conditioner is not in operation (stopped state), the indoor temperature (Tin) in the conditioning room is "Tin".

To (= 3.5 degrees) "(YES), the electric heater 10 is energized and" Tin "

The energization of the electric heater 10 is maintained until it rises to Tl (= 5.5). In addition, the room temperature Tin is "Tin".

If not "NO""Tin

If it is in the state of T1 and YES, the electric heater 10 is turned off. If NO, it is returned. The values of T0 and T1 are not limited to this and may be arbitrarily set in accordance with the surrounding conditions. "T1

It is necessary to set the appropriate differential width as T0 ".

Next, if the switch 66 is OFF or the air conditioner is in operation, the room temperature set value Ts set by the slide switch 54 is read. At this time, if the upper contact piece 30 of the relay 29 is ON, the value after converting the value of Ts to "Ts-F (Ts)" using the conversion degree of FIG. 5 is memorized, and the upper contact piece 30 is also stored. If it is OFF, the value of Ts is directly stored, and the operation or energization of the compressor 1, the electric heaters 9, 10 is controlled based on this value Ts.

T2(=167도)"라면(YES) 압축기(1)에 의한 히이터 덤프운전과 전기히이터(9)에 의한 난방운전이 실시되며, 외기온도(Tout)가 "Tout

T2"가 아니라면(NO) 압축기(1)를 정지상태로 유지하고, 또한 전기히이터(10)에 의한 난방운전만이 실시된다. 이때에 특히, 전기히이터(9)는 실내온도(Tin)이 "Tin

Ts-1"에서 통전이 개시되고, "Tin

Ts"로 되서 통전이 차단되는 디퍼렌샬을 가지고 있다.That is, the temperature Tout is "Tout"

T2 (= 167 degrees) "(YES) the heater dump operation by the compressor 1 and the heating operation by the electric heater 9 are performed, and the outdoor temperature Tout is" Tout ".

If not T2 "(NO), the compressor 1 is kept stationary and only the heating operation by the electric heater 10 is performed. In this case, in particular, the electric heater 9 has a room temperature" Tin ". Tin

Energization is initiated at Ts-1 " and " Tin

Ts "has differential to cut off the electricity.

In addition, since the charting by the ON-OFF of the compressor 1 is prevented, the differential may be set to a temperature at which the ON-OFF is switched.

In the above description, the operation or energization of the compressor 1, the electric heaters 9, and 10 causes the outputs of the terminals D8, D11, and D12 of the microprocessor 13 to be at an advanced level. The relays 33, 36, 37 are energized to close the upper contact pieces 41, 46, 47. Furthermore, once the compressor 1, the electric heaters 9, 10 are in the ON state, the ON state is maintained until the OFF state is set. Next, in the cooling operation in which the four sides 2 are reversed in the state shown in FIG. 1, when the operation is started, the room temperature set value Ts set in the slide switch 54 is first read.

Ts"에서 ON상태로 되고, "Tin

Ts"에서 OFF상태로 변하는 운전을 실시한다. 이때에 압축기(1)의 ON-OFF가 전환하는 온도로 디퍼렌샬을 설정하여 압축기(1)의 ON-OFF의 챠터링을 방지하도록 하여도 된다.At this time, if the upper contact piece 30 of the relay 29 is ON, the value after converting the value of Ts to "Ts = G (Ts)" using the conversion degree of FIG. 7 is also memorized, and the upper contact piece 30 ) Is OFF, the value of Ts is directly memorized. Based on this value (Ts), the operation of the compressor 1 is "Tin".

Ts "turns ON and" Tin "

The operation of changing from Ts "to the OFF state is performed. At this time, the differential may be set to a temperature at which the ON-OFF of the compressor 1 switches to prevent the charting of the ON-OFF of the compressor 1.

로 접속되는 전력부의 전기회로도이고, 도중에서 (68)은 파워트랜스(69)는 서어지 흡수용의 바리스터, (70) 내지 (72)는 각각 보호용의 전류퓨우즈 또는 온도퓨우즈, (73)은 공기조화기의 메인스위치, (74)는 교류의 상용전원이다. 다른 구성요소는 상기한 설명과 동일하기 때문에 생략하기로 한다.3 is a terminal of FIG.

An electric circuit diagram of the power unit connected to the circuit, in which 68 is a power transformer 69 is a varistor for surge absorption, 70 to 72 is a current fuse or a temperature fuse for protection, respectively. Is the main switch of the air conditioner, and 74 is a commercial power source of alternating current. Other components are the same as the above description and will be omitted.

When the air conditioner configured as described above is operated, the operation is performed in the state shown in FIG. 8 by the outside temperature Tout and the room temperature Tin.

T2"라면 압축기(1)가 OFF로 되고 전기히이터(9),(10)에 의한 난방운전으로된다. 그후에 "Tout

T2"인체로 실내온도(Tin)이 상승하여 "Tin

Ts"로 되면 전기히이터(9),(10)가 OFF상태로 된다The outside temperature (Tout) is "Tout

T2 ", the compressor 1 is turned off, and heating is performed by the electric heaters 9 and 10. Thereafter," Tout ".

The room temperature (Tin) increases due to the T2 "

Ts "turns the electric heaters 9 and 10 off.

T2"로 되기까지 전기히이터(9),(10)에 의한 난방운전이 실시된다. 이와같이 외기온도가 낮고 냉동사이클에 의한 충분한 히이트 덤프운전이 유지되지 않을때에는 히이트 펌프운전을 정지하고 외기온도(Tout)가 상승하여 "Tout

T2"로 되면 히이트펌프운전에 의한 난방운전이 충분히 실시되기 때문에, 압축기(1)의 운전과 전기히이터(9)의 통전에 의한 난방운전으로 전환하는 것이다. 또한, 공기조화기의 운전이실시되어 있지 않을때에는 외기 온도(Tout)의 저하와 더불어 피조화실내의 온도가 저하하여 "Tin

T0"이고, 또한, 스위치(66)가 ON상태로 되어 있으면 자동적으로 전기히이터(10)가 통전이 되어서 "Tin

T1"로 될때까지 난방운전이 실시된다. 이것으로 피조화실내의 온도저하에 의한 수도의 동결이나 도어의 동결을 방지할수 있는 것이다. 나아가서 공기조화기의 본체로부터 분리한 원격조작판(23)의 수동스위치(24)를 이탈한 장소에서 조작하면 릴레이(29)가 통전되어서 상개접편(30)을 닫으면 동시에 발광소자(27)가 점등한다."Tout below

The heating operation by the electric heaters 9 and 10 is performed until T2 ". When the outside temperature is low and sufficient heat dump operation by the refrigeration cycle is not maintained, the heat pump operation is stopped and the outside temperature (Tout) goes up and says "Tout

When T2 "is achieved, the heating operation by the heat pump operation is sufficiently performed, so that the operation of the compressor 1 and the heating operation by energization of the electric heater 9 are switched. In addition, the operation of the air conditioner is performed. When not in use, the outside air temperature (Tout) decreases and the temperature in the processing chamber decreases.

T0 "and when the switch 66 is in the ON state, the electric heater 10 is automatically energized and" Tin ".

The heating operation is performed until T1 ". This prevents freezing of the tap water and freezing of the door due to the temperature drop in the air conditioning chamber. Further, the remote control board 23 separated from the main body of the air conditioner is prevented. When the manual switch 24 is operated at the position where the manual switch 24 is removed, the relay 29 is energized, and the light emitting element 27 lights up at the same time as the upper contact piece 30 is closed.

Ts

27"로부터 "19

Ts

24로 변경하여 과난방 또는 능력부족이 없는 난방운전을 실시할 수 있는 것이다. 또한, 전환스위치(25)를 조작하면 릴레이(28)가 통전되어서 상폐접편(20)을 열어서 마이크로프로셋서(13)에의 전원공급을 차단하다.When the upper opening piece 3 is closed, the set value Ts at room temperature is converted into "Ts = F (Ts)" based on the flowchart of FIG. In other words, set the room temperature set value (Ts) to "16".

Ts

27 "to" 19

Ts

By changing to 24, heating can be performed without overheating or lack of capacity. In addition, when the changeover switch 25 is operated, the relay 28 is energized to open the upper / close contact piece 20 to cut off the power supply to the microprocessor 13.

When the power is again supplied, the microprocessor 13 is subjected to "reset and star art" processing based on the flowchart art of FIG. That is, the microprocessor 13 is reset and the air conditioner is stopped. Further, in the defrosting operation during the heating operation, the temperature of the outdoor heat exchanger 7 is detected by the temperature sensor 53. When the temperature change of this outdoor side heat exchanger 7 becomes a constant condition, the general method of starting defrost is used. Similarly, the temperature of the indoor side heat exchanger 3 also concerns the prevention of cold air at the end of defrosting. Based on this, a general method of stopping the blower 11 for a predetermined time is used.

In addition, the control of the blowers 11 and l2 is performed based on the set value of the slide switch 59 or the state of the electric heaters 9 and 10 of the compressor 1.

In the air conditioner which is equipped with the temperature detector which detects the temperature of the conditioning room of this invention, and controls operation by comparing the detected temperature of this temperature detector with a set value, since the switch which switches the setting range width of a temperature set value is provided, When the temperature set point is unnecessary, it is possible to prevent it from becoming larger or larger than necessary, and to operate with good efficiency by preventing overcapacity operation or undercapacity operation.

In addition, in the above-described embodiment, the switch is implemented as a relay piece. However, if a manual switch is installed instead of the piece so that the user can operate it arbitrarily, the setting range width can be switched in accordance with the needs of the unit to be combined. Alternatively, it is possible to prevent the undercarriage operation and to always perform the air conditioner according to the optimum capability.

Claims (1)

A refrigeration apparatus having a compressor (1), an indoor side heat exchanger (3), a pressure reducing device (5), and an outdoor side exchanger (7) connected in a refrigerant flow relationship, and the indoor heat exchanger (3) are installed. A room temperature measuring device configured to measure the room temperature, a temperature control device capable of setting a temperature generated by the freezing device, a temperature regulator measured by the temperature control device, and a temperature measuring device measured by the temperature measuring device. The control adjusting device of the refrigerating device based on the relationship between the control device, the switch device and the switch device, the device for raising the lowest value of the temperature range when the refrigerating device is in a cooling state, and the refrigerating device when the refrigerating device is in a heating state. The deforming device comprising at least one of the two lowering devices of the temperature range, a lowering device of the temperature range when the refrigerating device is in a cooling state, and the refrigerating device. Is a control device for an air conditioner, characterized in that it comprises a converter of a temperature range including at least one of the devices for raising the lower limit of the temperature range when the heater is in a heated state.

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