JP2006242492A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable securing sufficient ventilation amount with a small number of ducts without using an air blower for introducing outside air, and controlling a damper according to an installation condition, an indoor air temperature and an outside air temperature. <P>SOLUTION: This air conditioner comprises an outside air introduction opening 105 comprising a outside air damper 108 for adjusting the outside air introduction amount, an indoor air suction opening 106 comprising an indoor air suction damper 107 for adjusting indoor air sucking resistance, a damper driving device 114 for driving the outside air damper 108 and the indoor air suction damper 107, and a control board 115 for controlling the damper driving device 114, at an air suction side of an indoor unit 101. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner capable of introducing outside air simultaneously with air conditioning such as cooling or heating. It is particularly effective for ceiling-embedded or duct-type air conditioners.

  2. Description of the Related Art Conventionally, there are many configurations that provide an outside air introduction function to an air conditioner, and in particular, there are many configurations in which an outside air introduction duct is simply connected to a suction portion and an outside air introduction blower is used.

  However, it is difficult to ensure sufficient ventilation by simply connecting the duct for introducing outside air to the suction part. When using a blower for introducing outside air, parts and electrical work are required for this purpose. Installation costs increase.

  As an apparatus that ensures a sufficient ventilation amount and does not use a blower for introducing outside air, there is an outdoor installation type duct type air conditioner as shown below (see, for example, Patent Document 1).

  This outdoor-installed duct type air conditioner connects the air conditioner installed outdoors with a duct and air-conditions it so that it can ventilate outside air and air-condition multiple rooms with ducts. is there.

  FIG. 7 is a cross-sectional view of a conventional air conditioner described in Patent Document 1.

  As shown in the figure, a suction duct 223 is connected to the heat source side portion 220 from the front side surface, and a use side portion 221 having a sirocco fan 229 as a fluid element is installed. A wind tunnel box 222 is provided to connect the blowout duct 224 from the top surface, and a door 241 is provided in the suction duct 223.

  Here, the heat source side portion 220 is provided with a heat source side heat exchanger 225 and a propeller fan 226, and the usage side portion 221 is provided with a usage side heat exchanger 228.

  A room is constituted by the wall 230, the ceiling surface 232, and the floor 233.

  The suction duct 223 connects the suction port 231 of the ceiling surface 232 to the use side portion 221, and the blowout duct 224 connects the front side surface of the wind tunnel 222 to the blowout port 235 of the ceiling surface 232.

  The outside air intake device 234 is driven by a servo motor 240, and controls the opening / closing angle of the door 241 according to signals from the carbon dioxide, temperature and humidity sensor unit 239 installed in the duct 223, thereby controlling the outside air intake ventilation amount. adjust.

Since the indoor air passes through the suction duct 223 and the static pressure is reduced in the vicinity of the outside air intake device 234, it is possible to obtain a sufficient amount of outside air simply by opening the door 241.
JP 60-138346 A

However, the conventional apparatus described in Patent Document 1 is a technique that can be applied only to the outdoor-installed duct type air conditioner as its name suggests, from indoor suction to an outdoor apparatus, and from an outdoor apparatus to an indoor outlet. It was necessary to lay ducts over long distances.

  In addition, when installing the device on the ceiling behind the ceiling, it is the same as the configuration in which a duct for introducing outside air is simply connected to the suction portion, and there is a problem that it is difficult to ensure a sufficient ventilation. It was.

  The present invention solves the above-described conventional problems, and can provide a sufficient ventilation amount without using a blower for introducing outside air with a small number of ducts installed. Another object of the present invention is to provide an air conditioner that can perform damper control according to the outside air temperature.

  In order to solve the above-described conventional problems, the air conditioner of the present invention adjusts the outdoor air inlet having an outdoor air damper for adjusting the outdoor air introduction amount on the air intake side of the indoor unit, and the indoor air suction resistance. An indoor air suction port provided with a damper for indoor air suction, a damper driving device for driving an outdoor air damper and a damper for indoor air suction, and a control board for controlling the damper driving device are provided.

  Thus, a sufficient ventilation amount can be secured without using a blower for introducing outside air, and damper control according to installation conditions, room air temperature, and outside air temperature can be performed.

  The air conditioner of the present invention can secure a sufficient ventilation without using a blower for introducing outside air, and can perform damper control according to installation conditions, indoor air temperature and outside air temperature, With the reduced construction, it is possible to secure an appropriate amount of outside air introduction, reduce heat loss due to ventilation, and perform efficient air conditioning and outside air introduction.

  A first aspect of the present invention is an indoor air inlet provided with an outdoor air inlet provided with an outdoor air damper that adjusts an outside air introduction amount and an indoor air inlet damper that adjusts an indoor air inlet resistance on the air intake side of the indoor unit. And a damper driving device that drives the outdoor air damper and the indoor air suction damper, and a control board that controls the damper driving device, and the opening degree of the outdoor air damper and the indoor air suction damper is set by the control board. It is a feature.

  As a result, sufficient ventilation can be secured without using a blower for introducing outside air, and the opening of the damper is set on the control board according to the air resistance loss of the local outside air introduction duct. it can.

  The second invention is characterized in that, in the first invention, in particular, a remote controller and a control board are provided, and the opening degree of the outside air damper and the indoor air suction damper is also set by the remote controller. Thereby, the opening degree of the damper can be set on the remote controller in accordance with the air resistance loss of the local outside air introduction duct.

  The third invention is characterized in that, in any one of the first and second inventions, a control board capable of detecting the ON / OFF state of the blower is provided, and the outside air damper is closed when the blower is OFF. is there. Thereby, intrusion of outside air can be prevented when the blower is OFF.

According to a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, a control board capable of detecting the air flow rate of the blower is provided, and the opening degree of the outdoor air damper and the indoor air suction damper is corrected according to the air flow rate. It is characterized by doing. Thereby, for example, when the opening degree of the damper is set in accordance with the strong wind, the opening degree of the damper can be corrected in accordance with the air flow rate even if the wind is medium or weak.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, a control board capable of detecting an operation mode such as cooling, heating, and blowing of an indoor unit is provided, and an external air damper and room air are provided according to the operation mode. The opening degree of the suction damper is corrected.

  For example, when the opening degree of the damper is set in accordance with the cooling, for example, the outside air damper is closed when the compressor is not operating and the outside air introduction amount is reduced than the setting during heating when the temperature difference between the room and the outside is large. Can be corrected.

  According to a sixth aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, a control board capable of detecting the thermo-ON / OFF state of the indoor unit is provided. The opening degree of the air suction damper is corrected. Thereby, for example, when the indoor unit is in the thermo OFF state, it is possible to perform a correction such that the outside air introduction amount is reduced from the setting.

  According to a seventh aspect of the invention, in particular, in any one of the first to sixth aspects of the invention, a remote controller, an indoor air temperature sensor, and a control board are provided, and an outdoor air damper is provided according to the difference between the set temperature of the indoor unit and the indoor air temperature. Further, the opening degree of the indoor air suction damper is corrected. Thereby, for example, when the difference between the set temperature of the indoor unit and the indoor air temperature is large, it is possible to perform correction such that the amount of outside air introduced is reduced from the set value.

  According to an eighth invention, in particular, in any one of the first to seventh inventions, an indoor air temperature sensor, an outside air temperature sensor, and a control board are provided, and an outside air damper is provided according to a difference between the room air temperature and the outside air temperature. The present invention is characterized in that the opening degree of the indoor air suction damper is corrected.

  Thereby, for example, when the difference between the indoor air temperature and the outside air temperature is large, it is possible to perform correction such that the outside air introduction amount is reduced from the setting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a perspective view of an air conditioner according to a first embodiment of the present invention, FIG. 2 is a block diagram of control, and FIG. 3 is a plan view of a control board.

  In the same figure, it is comprised from the indoor unit 101 and the external air introduction unit 104 attached to the suction side of the indoor unit 101. The indoor unit 101 is provided with a heat exchanger 102 and a blower 103.

  The outside air introduction unit 104 is provided with an outside air introduction port 105 which is an outside air introduction unit and an indoor air suction port 106 which is an indoor air suction unit.

  The outside air introduction port 105 is connected to an outside air introduction duct 113 that communicates with outside air, and the indoor air suction port 106 is connected to a suction chamber that communicates with the room, or a duct and a suction chamber.

Further, an outside air damper 108 serving as an outside air introduction amount adjusting means is disposed at the outside air introduction port 105, and an indoor air suction damper 107 serving as a ventilation resistance adjusting means is disposed at the indoor air suction port 106. A number corresponding to the size of the mouth 106 is arranged, and each is configured to be operated by the driving device 114.

  The driving device 114 is connected to the control board 115, and the opening degree is set and controlled.

  The operation of the air conditioner configured as described above will be described below.

  When the blower 103 is turned on, the indoor air 109 is sucked from the indoor air suction port 106 and the outside air 110 is sucked from the outside air introduction port 105, and is cooled or heated by the heat exchanger 102 through the filter 112 and the blower 103. After being processed, the blown air 111 is sent to the room.

  At this time, the outside air introduction amount is determined by the static pressure in the outside air introduction unit 104 and the air resistance loss determined by the length and shape of the outside air introduction duct 113. Therefore, in order to introduce an appropriate amount of outside air, The damper 107 is squeezed and the ventilation resistance of the air inlet 106 is increased to increase the amount of outside air introduced from the outside air inlet 105, or the outside air damper 108 is squeezed to reduce the amount of outside air introduced from the outside air inlet 105. There is a need.

  As described above, it is necessary to set the indoor air suction damper 107 and the outdoor air damper 108 on site in accordance with installation conditions and a desired outdoor air introduction amount.

  Here, in the air conditioner according to the first embodiment of the present invention, for example, the indoor air suction damper 107 and the outdoor air damper 108 are connected to the driving device 114 from 0 degrees fully open to 90 degrees fully closed. As shown in FIG. 2, the control board 115 can be controlled, and in detail, from the setting 1 in which the most suction of the indoor air 109 can be secured and the outside air 110 is absent, Settings are provided up to setting 7 where the outside air 110 can be introduced and the indoor air 109 is not sucked.

  At this time, the setting is performed by a switch 116 on the control board 115 connected to the driving device 114 as shown in FIG.

  As a result, sufficient ventilation can be secured without using a blower for introducing outside air, and the opening of the damper is set on the control board according to the air resistance loss of the local outside air introduction duct. Therefore, it is not necessary to manually adjust the damper at the time of construction, and an appropriate amount of outside air introduction can be ensured with reduced construction.

  In this setting, the setting of the indoor air suction damper 107 and the outside air damper 108 may be provided separately, or the number of setting steps may be increased. Also, the function of the control board 115 may be set in the main body of the indoor unit 101. The control board may be provided.

(Embodiment 2)
FIG. 4 is a plan view of the remote controller of the air conditioner according to the second embodiment of the present invention.

  In FIG. 4, the remote controller 117 is connected to the control board 115.

  The operation of the air conditioner configured as described above will be described below.

By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108,
The operation of securing a sufficient ventilation without using an air blower for introducing outside air and setting the opening of the damper according to the air resistance loss of the local outside air introducing duct is the same as that of the first embodiment. Basically the same.

  However, since the setting can be set also on the remote control 117 connected to the control board 115, the construction is further reduced and it is particularly effective for the ceiling-embedded or duct-type air conditioner.

  The function of the remote controller 117 may be provided to a main body remote controller connected to the control board of the indoor unit 101 main body.

(Embodiment 3)
By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first and second embodiments.

  However, the control board 115 has a structure capable of detecting the ON / OFF state of the blower 103.

  For this reason, for example, when the opening degree of the damper is set to 4 in accordance with the air resistance loss of the local outside air introduction duct, it may be left as it is when the blower is on, but it is used for the outside air until the blower is off. If the damper 108 is opened, it becomes an intrusion route for extraneous air.

  In such a case, for example, another device for the purpose of preventing the entry of outside air, such as an electric damper, is often installed.

  However, when the blower is OFF, the outside air damper 108 is closed, that is, by correcting the opening degree of the damper to the setting 1, it is possible to prevent the outside air from entering. It is possible to maintain the air quality in the room by avoiding the installation of separate equipment for the purpose of preventing air pollution.

(Embodiment 4)
By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first to third embodiments.

  However, the control board 115 has a structure capable of detecting the amount of air blown from the blower 103.

  For this reason, for example, when the blower 103 calculates the air resistance loss of the local outside air introduction duct according to the amount of air blown when the wind is strong, and the damper opening is used with the setting 4, when the wind is medium or weak, The same amount of outside air introduced as when strong winds cannot be secured.

  In such a case, for example, in the case of medium wind, the damper opening degree is increased by one step from the initial setting 4 and set to 5; Therefore, an appropriate amount of outside air can be secured.

(Embodiment 5)
By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first to fourth embodiments.

  However, the control board 115 has a structure capable of detecting operation modes such as cooling, heating, and air blowing of the indoor unit 101.

  For this reason, for example, if the damper opening is set according to the amount of outside air required for cooling, the indoor heat may escape if the same amount of outside air is introduced as during cooling until the compressor is not operating. In addition, if the same amount of outside air is introduced as during cooling until the time when the temperature difference between the room and the room is large, the heat inside the room will escape, and the reverse may occur depending on the region and conditions. Correction of the opening setting is required.

  In such a case, for example, when the damper opening is set to 4 according to the amount of outside air required for cooling, the outside air damper 108 is closed when the compressor is not operating, that is, the damper Correcting the opening to setting 1, and reducing the amount of outside air introduction by reducing it by one step from setting 4 and reducing it to setting 3 at the time of heating where the temperature difference between the room and the room is large, to reduce heat loss due to ventilation, Efficient air conditioning and outside air introduction can be performed.

(Embodiment 6)
By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first to fifth embodiments.

  However, the control board 115 has a structure that can detect the thermo-ON / OFF state of the indoor unit 101.

  For this reason, for example, even if the damper opening is set according to the operation mode, such as cooling, heating, air blowing, etc., the initial setting is the same as the air blowing when the compressor is not operating when the cooling or heating thermo is OFF If the amount of outside air introduced is taken, the indoor heat will escape.

  In such a case, for example, if the damper opening is used with setting 4 according to the amount of outside air required when the thermostat is turned on in cooling, it is set one step lower than setting 4 when the thermo is off when the compressor is not operating. By correcting to 3 so as to reduce the amount of outside air introduced, heat loss due to ventilation can be reduced, and efficient air conditioning and outside air introduction can be performed.

(Embodiment 7)
FIG. 5 is a perspective view of an air conditioner according to the seventh embodiment of the present invention.

  In FIG. 5, the indoor air temperature sensor 118 is attached in the vicinity of the indoor air inlet 106 and has a structure capable of detecting the temperature of the indoor air 109. The indoor air temperature sensor 118 is connected to the control board 115.

  The operation of the air conditioner configured as described above will be described below.

By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first to sixth embodiments.

  However, the control board 115 is configured to correct the opening of the indoor air suction damper 107 and the outside air damper 108 according to the difference between the set temperature of the indoor unit 101 and the indoor air temperature. For this reason, for example, when the difference between the set temperature and the room air temperature is within a predetermined range, that is, the desired outside air introduction amount is calculated according to the balance between the indoor air conditioning load and the air conditioner capacity, and the damper opening is set If the same outside air introduction amount is taken until the air conditioning load is large, such as at the time of start-up, the time until the set temperature is reached is delayed. In such a case, for example, when the desired outside air introduction amount is calculated in accordance with a state where the indoor air conditioning load and the capacity of the air conditioner are balanced, and the damper opening is used at setting 4, the room set by the remote controller 117 is used. When the difference between the set temperature of the machine 101 and the indoor air temperature detected by the indoor air temperature sensor 118 is equal to or larger than a predetermined value, the step is lowered by one step from setting 4 to set 3, and the outside air introduction amount is reduced, and the difference is within the predetermined value. When it is settled, the setting 3 is returned to the setting 4 to correct it, so that heat loss due to ventilation can be reduced, and efficient air conditioning and outside air introduction can be performed.

  This function may be performed using a control board of the indoor unit 101 main body and an indoor air temperature sensor.

(Embodiment 8)
FIG. 6 is a perspective view of an air conditioner according to the eighth embodiment of the present invention.

  In FIG. 6, an outside air temperature sensor 119 is attached in the vicinity of the outside air inlet 105 and has a structure capable of detecting the temperature of the outside air 110.

  The outside temperature sensor 119 is connected to the control board 115.

  The operation of the air conditioner configured as described above will be described below.

  By setting the opening degree of the indoor air suction damper 107 and the outside air damper 108, a sufficient ventilation amount can be secured without using an air blower for introducing outside air, and the air resistance loss of the local outside air introduction duct can be reduced. In addition, the operation for setting the opening of the damper is basically the same as in the first to seventh embodiments.

  However, the control board 115 is configured to correct the opening of the indoor air suction damper 107 and the outdoor air damper 108 according to the difference between the indoor air temperature and the outdoor air temperature.

  For this reason, for example, when the difference between the indoor air temperature and the outside air temperature is within a predetermined range, that is, the desired outside air introduction amount is calculated according to the balance between the indoor air conditioning load and the air conditioner capacity, and the damper opening is set If the same outside air introduction amount is taken even when the outdoor temperature is high during cooling or is low during heating, there is a possibility that the capacity of the air conditioner will be insufficient.

  In such a case, for example, the desired outside air introduction amount is calculated in accordance with the balance between the indoor air conditioning load and the air conditioning conditioner in which the difference between the indoor air temperature and the outside air temperature is within a predetermined range, and the damper opening is set. If the difference between the indoor air temperature detected by the indoor air temperature sensor 118 and the outdoor temperature detected by the outdoor air temperature sensor 119 is equal to or greater than a predetermined value, the setting is reduced by one step from setting 4 to setting 3, and the outside air is introduced. When the amount is reduced and the difference falls within a predetermined value, the heat loss due to ventilation can be reduced by correcting the setting 3 back to the setting 4, so that efficient air conditioning and introduction of outside air can be performed.

  This function may be performed using a control board of the indoor unit 101 main body and an outdoor temperature sensor.

  The air conditioner of the present invention is capable of introducing outside air without using a dedicated blower, and is particularly effective for a ceiling-embedded or duct-type air conditioner, Only when the outside air introduction duct is short, it can be applied to an air conditioner having a low static pressure of a blower such as a wall-mounted type or a floor-standing type.

The perspective view of the air conditioner in Embodiment 1 of this invention The block diagram of control of the air conditioner in Embodiment 1 of this invention The top view of the control board of the air conditioner in Embodiment 1 of this invention Top view of the air conditioner remote control according to Embodiment 2 of the present invention The perspective view of the air conditioner in Embodiment 7 of this invention. The perspective view of the air conditioner in Embodiment 8 of this invention. Cross section of a conventional air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Indoor unit 102 Heat exchanger 103 Blower 105 Outside air inlet 106 Indoor air inlet 107 Indoor air suction damper 108 Outside air damper 114 Damper drive device 115 Control board 117 Remote control 118 Indoor air temperature sensor 119 Outside air temperature sensor

Claims (8)

An indoor unit provided with a heat exchanger and a blower, an outdoor air inlet provided with an outdoor air damper on the air intake side of the indoor unit, and an indoor air inlet for adjusting indoor air suction resistance An indoor air suction port provided with a damper, a damper driving device for driving the outdoor air damper and the indoor air suction damper, and a control board for controlling the damper driving device, the outdoor air damper and the indoor air suction. An air conditioner characterized in that the opening degree of the damper is set by the control board. 2. The air conditioner according to claim 1, further comprising a remote controller and a control board, wherein the remote controller sets the opening degree of the outdoor air damper and the indoor air suction damper. 3. The air conditioner according to claim 1, further comprising a control board capable of detecting an ON / OFF state of the blower, wherein the outside air damper is closed when the previous blower is OFF. The air according to any one of claims 1 to 3, further comprising a control board capable of detecting the amount of air blown from the blower, wherein the opening degree of the outside air damper and the indoor air suction damper is corrected according to the amount of air blown. Harmony machine. A control board capable of detecting an operation mode such as cooling, heating, and blowing of an indoor unit is provided, and the opening degree of the outside air damper and the indoor air suction damper is corrected according to the operation mode. 4. The air conditioner according to any one of 4. A control board capable of detecting the indoor ON / OFF state of the indoor unit is provided, and the opening degree of the outdoor air damper and the indoor air suction damper is corrected in accordance with the thermo ON / OFF state of the indoor unit. The air conditioner in any one of 1-5. A remote control, an indoor air temperature sensor, and a control board are provided, and the opening degree of the outdoor air damper and the indoor air suction damper is corrected according to the difference between the set temperature of the indoor unit and the indoor air temperature. Item 7. The air conditioner according to any one of Items 1 to 6. An indoor air temperature sensor, an outdoor air temperature sensor, and a control board are provided, and the opening degree of the outdoor air damper and the indoor air suction damper is corrected according to the difference between the indoor air temperature and the outdoor air temperature. The air conditioner in any one of 1-7.

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