KR20060069711A - Air conditioner - Google Patents

Abstract

The air conditioner according to the present invention is equipped with a control unit that can control the operation of the plurality of indoor units in one outdoor unit, it is possible to operate a plurality of indoor units with only one outdoor unit, so installation and management to purchase a plurality of outdoor units There is an effect that can reduce the cost.

Air Conditioner, Outdoor Unit, Indoor Unit, Multi, Unitary, Control Unit, Flow Control Unit

Description

Air Conditioner {Air conditioner}             

1 is a configuration diagram schematically showing an air conditioner according to the prior art,

Figure 2 is a schematic view showing a multi-type unit air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

50: indoor unit 51: the first indoor

52: Second Room 53: Third Room

54: first expansion mechanism 55: second expansion mechanism

56: first evaporator 57: second evaporator

58: third evaporator 60: outdoor unit

61: control unit 62: compressor

63: condenser 64: the first thermostat

65: second thermostat 66: temperature sensor

70: flow rate control part 71: suction laminated pipe

72: discharge laminated pipe 73: first suction branch pipe

74: second suction branch pipe 75: third suction branch pipe

76: 1st discharge basin 77: 2nd discharge basin

78: third discharge branch pipe 80: on-off valve

81: first opening and closing valve 82: second opening and closing valve

83: third open / close valve

The present invention relates to an air conditioner, and more particularly, to a control unit for controlling the operation of a plurality of indoor units in an outdoor unit, so that only one outdoor unit is required, and thus an air conditioner that can reduce the cost of the outdoor unit.

In general, air conditioners are heaters, air conditioners, and air purifiers. They are devices for cooling or heating the room or purifying the air and creating a more comfortable indoor environment for humans. Unitary air conditioners are indoor units having a duct type structure. Is used to heat and heat the tea room.

1 is a configuration diagram schematically showing an air conditioner according to the prior art.

As shown in FIG. 1, the air conditioner according to the related art may cool one indoor unit by connecting one outdoor unit 20 to a refrigerant pipe 30 to one outdoor unit 10 through a refrigerant cycle. It is supposed to be.

In the outdoor unit 10, a compressor 12, which sucks gas refrigerant of low temperature and low pressure, compresses the gas refrigerant at high temperature and high pressure, and heats and condenses the gas refrigerant of high temperature and high pressure supplied from the compressor 12 using external air. Condenser 14 is provided, respectively, and the indoor unit 20 is provided with an expansion mechanism 22 for expanding the refrigerant supplied from the condenser 14 through the refrigerant pipe from the outdoor unit to a low temperature, low pressure state.

The refrigerant pipe 30 of the outdoor unit 10 and the indoor unit 20 is connected by a service valve 32.

When the indoor unit 20 is turned on, the compressor 12 is driven, and the high temperature and high pressure refrigerant is discharged from the compressor 12 and flows into the condenser 14. do.

The refrigerant introduced into the condenser 14 is condensed by heat exchange with the air on the outdoor side, and the refrigerant from the condenser 14 is decompressed while passing through the expansion mechanism 22 to become a low-temperature, low-pressure liquid state. It is sucked into the evaporator 24 of the indoor unit 20.

The refrigerant sucked into the evaporator 24 cools the indoor air while exchanging heat with the indoor air, and the refrigerant passing through the evaporator 24 is circulated back to the compressor 12.

However, since the air conditioner according to the related art is configured to connect one outdoor unit 10 to one indoor unit 20, when a plurality of indoor units 20 are to be installed, a plurality of outdoor units in the plurality of indoor units 20 are provided. There is a problem that each must be installed (10).

The present invention has been made to solve the problems of the prior art, it is an object of the present invention to provide an air conditioner that can reduce the installation and management costs by installing only one outdoor unit that can correspond to a plurality of indoor units.

The air conditioner according to the present invention for solving the above problems is a plurality of indoor units, one outdoor unit connected to the plurality of indoor units, mounted in the room, the temperature sensing means for detecting the temperature of the room, the outdoor unit And a control unit for determining a flow rate of the refrigerant respectively introduced into the plurality of indoor units according to the signal of the temperature sensing means, and between the plurality of indoor units and one outdoor unit, and the plurality of indoor units according to the signal of the control unit. It characterized in that it comprises a flow rate control unit for adjusting the flow rate of the refrigerant flowing into each.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram schematically showing a multi-type unit air conditioner according to the present invention.

As shown in FIG. 2, the air conditioner according to the present invention is equipped with a plurality of indoor units 50, one outdoor unit 60 connected to the plurality of indoor units 50, and mounted in the room, thereby controlling indoor temperature. A control unit 61 mounted on the outdoor unit 60 for sensing and controlling the plurality of indoor units 50 to selectively operate according to a signal of the temperature sensing unit, and the plurality of indoor units 50. ) Is installed between the outdoor unit 60 and a flow rate control unit 70 for adjusting the flow rate of the refrigerant flowing into the plurality of indoor units 50 according to the signal of the controller 61.

Here, the plurality of indoor units 50 includes a large indoor unit having an expansion mechanism installed therein and a small indoor unit having no expansion mechanism installed therein. As shown in FIG. 2, the large indoor unit is the large indoor unit A; The first and second indoor units 51 and 52 having a duct-like structure such as -coil and the like, and the small indoor unit will be described as being the third indoor unit 53 which is a room air conditioner.

The outdoor unit 60 is provided with a compressor 62 for compressing a refrigerant, and a condenser 63 for condensing a high-temperature, high-pressure gas refrigerant supplied from the compressor 62, and the first and second chambers 51. The first and second expansion mechanisms 54 and 55 for expanding the refrigerant supplied from the condenser 63, and the refrigerant expanded in the first and second expansion mechanisms 54 and 55 are externally provided. First and second evaporators 56 and 57 are respectively installed to take heat away and evaporate, and a third evaporator 58 is installed in the third chamber 53.

On the other hand, the temperature sensing means is mounted indoors, the first and second thermostats (64, 65) and the third connected to the first and second indoor (51, 52), respectively, and senses the room temperature, and the third The first and second thermostats 64 and 65 and the temperature sensor 66 are mounted on the indoor unit 53 and configured to detect the room temperature. And connected to transmit the detected signal to the control unit 61.

Here, the first and second thermostats 64 and 65 are configured not only to sense the room temperature but also to output a signal to compare the detected temperature with a set temperature so that the air conditioner can be operated according to the compared value. do.

On the other hand, the flow rate control unit 70 is a refrigerant lamination pipe connected to each of the outdoor unit 60, a refrigerant branch pipe branched from the refrigerant lamination pipe and connected to the plurality of indoor units 50, respectively, and the refrigerant branch pipe It is installed to the refrigerant flow rate adjusting means for adjusting the flow rate of the refrigerant flowing through the refrigerant branch pipe in accordance with the signal of the control unit 61.

The refrigerant lamination pipe includes a suction lamination pipe 71 formed to guide the refrigerant sucked into the outdoor unit 60 and a discharge lamination pipe 72 formed to guide the refrigerant discharged from the outdoor unit 60.

The refrigerant branch pipe is branched from the discharge lamination pipe 72 and the first, second and third suction branch pipes formed to guide the refrigerant sucked into the first, second and third chambers 51, 52 and 53. Refrigerants branched from (73) (74) (75) and the suction lamination pipe (71) and discharged from the first, second, and third indoor (51) (52), (53) to the outdoor unit (60) side. The first, second, and third discharge branch tubes 76, 77, 78 are formed to guide.

The refrigerant flow rate adjusting means is an on / off valve 80 mounted to each of the refrigerant branch pipes, and opens and closes the refrigerant branch pipes to the first, second, and third chambers 51, 52, 53. The first, second and third suction branch pipes 73, 74 and 75 are mounted to adjust the flow rate of the refrigerant to be sucked.

That is, the opening and closing valve 80 is the first, second, third opening and closing valves 81, 82, 83, respectively mounted to the first, second, third suction branch pipes (73, 74, 75). Is done.

Here, since the first and second expansion mechanisms 54 and 55 are mounted inside the first and second chambers 51 and 52, the first and second opening and closing valves 81 and 82 are A solenoid valve capable of opening and closing the first and second suction branch pipes 73 and 74 is used, and since the expansion mechanism is not mounted inside the third chamber 53, the third opening / closing valve 83 is It is preferable to use an electronic expansion valve so as to have a function of the expansion mechanism.

The control unit 61 determines the temperature of the target indoor air according to the signals detected by the first and second thermostats 64 and 65 and the temperature sensor 66, and then the first, second and third And to determine the refrigerant flow rate supplied to the evaporators 56, 57, 58.

The outdoor unit 60 having the control unit 61 as described above is applied to the multi-unit unity air conditioner in the present embodiment, but can be easily applied to a single unitary unit air conditioner or a heat pump type air conditioner.

Looking at the operation of the air conditioner according to the present invention configured as described above are as follows.

First, the first and second thermostats 64 and 65 and the temperature detecting sensor 66 respectively installed in the room sense the temperature of indoor air and transmit the same to the control unit 61.

The controller 61 determines a target temperature according to the signals input from the first and second thermostats 64 and 65 and the temperature sensor 66, respectively, and determines the operation mode of the compressor 62. In addition, the operation of the first, second, third indoor (51) (52) 53 and the flow rate of the refrigerant to be introduced into the first, second, third indoor (51) (52) (53) to determine the signal Output

That is, depending on whether the first, second and third indoors 51, 52 and 53 are operated, the refrigerant flows only into the indoor unit which is operating among the first, second and third indoors 51, 52 and 53. In addition to controlling the operation of the first, second, third opening and closing valve (81, 82, 83), and opening and closing time of the first, second, third opening and closing valve (81, 82, 83) By adjusting the flow rate of the refrigerant flowing into the first, second, third indoor (51, 52, 53).

If the second chamber 52 is not operated, refrigerant is introduced into the second chamber 52 by turning off the second opening / closing valve 82 to shield the second suction branch pipe 74. Block it from becoming

Even when the first chamber 51 or the third chamber 53 is not operated, the first chamber 51 or the third chamber 83 is turned off to turn off the first chamber 51 or the third chamber 53. The operation of blocking the introduction of the refrigerant into the 53 is also the same.

In addition, since the third chamber 53 is a room air conditioner and the third opening / closing valve 83 is an electromagnetic expansion valve, the controller 61 determines the opening amount of the third opening / closing valve 83 so as to determine the third opening. The opening degree signal is output to the on / off valve 83 to adjust the flow rate of the refrigerant flowing into the third chamber 53 and to expand it.

Therefore, the outdoor unit 60 is configured to adjust the flow rate of the refrigerant distributed from the outdoor unit 60 according to the operation of the first, second and third indoors 51, 52, 53, and the temperature of the indoor air, thereby to provide a single outdoor unit. Since the operation of the plurality of indoor units is possible only with 60, the cost of purchasing the plurality of outdoor units 60 can be reduced.

The air conditioner according to the present invention configured as described above is equipped with a control unit that can control the operation of the plurality of indoor units in one outdoor unit, so that a plurality of outdoor units can be purchased because only one outdoor unit can operate the indoor units. This has the effect of reducing installation and maintenance costs.

In addition, since the outdoor unit equipped with the control unit can be applied to not only a plurality of indoor units but also to operate only one indoor unit, not only a multi-unitary air conditioner but also a single unitary air conditioner using only one indoor unit. There is an advantage to apply.

Claims (5)

A plurality of indoor units; One outdoor unit connected to the plurality of indoor units; A temperature sensing means mounted in the room and sensing the temperature of the room; A control unit mounted to the outdoor unit and configured to determine a flow rate of refrigerant respectively introduced into the plurality of indoor units according to a signal of the temperature sensing unit;  The air conditioner is installed between the plurality of indoor unit and one outdoor unit, comprising a flow rate adjusting unit for adjusting the flow rate of the refrigerant respectively introduced into the plurality of indoor units in accordance with the signal of the control unit. The method of claim 1, The flow rate control unit may be a refrigerant lamination pipe connected to the outdoor unit, a refrigerant branch pipe branched from the refrigerant lamination pipe and connected to the plurality of indoor units, respectively, and installed in the refrigerant branch pipe to provide the refrigerant branch pipe according to a signal from the controller. Air conditioner comprising a refrigerant flow rate adjusting means for adjusting the flow rate of the refrigerant flowing. The method of claim 2, And the coolant flow rate adjusting means is an on / off valve mounted on a coolant branch pipe respectively connected to the plurality of indoor units to open and close the coolant branch pipe. The method of claim 3, wherein The plurality of indoor units are air conditioners, characterized in that consisting of a large indoor unit having an expansion mechanism installed therein, and a small indoor unit having no expansion mechanism installed therein. The method of claim 4, wherein The on-off valve comprises a solenoid valve mounted on the refrigerant branch pipe connected to the large indoor unit, and an air expansion valve mounted on the refrigerant branch pipe connected to the small indoor unit to expand the refrigerant sucked into the small indoor unit. Conditioner.

Images