JP2006145072A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of selecting a ventilating operation mode excluding an air supplying/discharging operation in an air conditioner provided with a pair of ventilating pipes to implement the air supplying/discharging operation for simultaneously supplying and discharging the air. <P>SOLUTION: This air conditioner comprises ventilating pipes 23, 24 inserted into holes of a building, a first air blower device 21 mounted in an indoor unit 1 and connected with the first ventilating pipe, a second air blower device 22 mounted in the indoor unit, connected with the second ventilating pipe and discharging the air, a control means 46, and an operating portion 49 selecting the ventilating operation mode from the air supplying/discharging operation mode for implementing both of air discharging for discharging the indoor air outdoors and the air supply for taking in the outdoor air, an air supplying operation mode for implementing only the air supply, and an air discharging operation mode for implementing only the air discharging, and outputting the selected ventilating operation mode to the control means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner, and more particularly to ventilation thereof.

  Conventionally, air conditioners such as room air conditioners generally do not have a ventilation function, and when indoor air gets dirty, people open the windows as appropriate to ventilate outside air. There was a need to do.

Therefore, conventionally, an air conditioner provided with a ventilation device has been proposed. For example, as described in Patent Document 1, an air supply duct (that is, a ventilation pipe) and an exhaust duct are provided, an air supply fan is provided in the air supply duct, and an exhaust fan is provided in the exhaust duct. There is an air conditioner.
JP 2001-304645 A

  By the way, when the room is filled with cigarette smoke or the like, there are cases where it is desired to exhaust air without supplying air. Conversely, there is a case where it is desired to supply fresh outdoor air without exhausting. However, conventionally, there is no room for selection with only one type of ventilation operation mode.

  The problem to be solved is that the ventilation operation mode cannot be selected.

  In the air conditioner of the present invention, the refrigerant pipe (2) from the indoor unit (1) is led to the outside through the hole (4) of the building and connected to the outdoor unit (3). And the 1st ventilation pipe (23) inserted into the hole of a building, the 2nd ventilation pipe (24), and a 1st ventilation apparatus (21) which is arrange | positioned in an indoor unit and is connected to this 1st ventilation pipe A second air blower (22, 60) disposed in the indoor unit and connected to the second ventilation pipe, a control means (46) for controlling the first air blower and the second air blower, Supply / exhaust operation mode in which both the exhaust air that discharges outdoor air and the air supply that takes in outdoor air are performed, the air supply operation mode in which only the air supply that takes in outdoor air is performed, and indoor air outdoors An operation unit (49) capable of selecting each ventilation operation mode of the exhaust operation mode in which only the exhaust to be discharged is performed and outputting the selected ventilation operation mode to the control means; Inhaling outdoor air An air supply function for supplying air into the room through the ventilation pipe is provided, and the second blower device has an exhaust function for sucking indoor air and exhausting the air to the outside of the building through the second ventilation pipe. When there is an air supply / exhaust operation instruction, the first air blower is supplied with air and the second air blower is exhausted. When there is an air supply operation instruction, the first air blower is supplied with air and the air exhaust operation is instructed. The second air blower is exhausted.

  Moreover, the 1st blower (31) of a 1st air blower can change rotation speed, and can change the ventilation volume of a 1st air blower by changing rotation speed, and it can adjust the 2nd blower (41 of a 2nd air blower). , 61) can change the number of rotations, and by changing the number of rotations, the amount of air blown from the second blower can be adjusted, and the control means can control the number of revolutions of the first blower of the first blower and the second air blower. It may be possible to individually control the rotation speed of the second blower of the apparatus.

  In addition, an air supply / exhaust operation mode in which both exhaust for exhausting indoor air to the outdoors and air supply for taking in outdoor air are performed, an air supply operation mode in which only air intake for taking in outdoor air is performed, and indoor air There is a case where a display device (15) for understanding each ventilation operation mode of the exhaust operation mode in which only exhaust for discharging the air to the outside is performed is provided at the front portion of the indoor unit.

  Further, the display device is provided with a pilot display section (56) for indicating that the air is ventilated, and an air supply level which is provided on one side with the pilot display section in the middle and indicates the level of the air supply air volume. There may be a display unit (57) and an exhaust level display unit (58) provided on the other side and indicating the level of the exhaust air volume.

  According to the present invention, the operation unit performs the supply / exhaust operation mode in which both the exhaust for exhausting indoor air to the outdoors and the supply air for taking in outdoor air are performed, and the supply in which only the intake air for taking in outdoor air is performed is performed. Each ventilation operation mode of an air operation mode and an exhaust operation mode in which only exhaust for exhausting indoor air to the outdoors is performed, and the selected ventilation operation mode can be output to the control means. When there is an air supply / exhaust operation instruction, the first air blower is supplied with air and the second air blower is exhausted. When there is an air supply operation instruction, the first air blower is operated with air supply, and when there is an exhaust operation instruction 2 Since the air blower is exhausted, the operation mode is selected, and the operation mode of ventilation is selected from the air supply / exhaust operation for supplying and exhausting air simultaneously, the air supply operation for supplying only air, and the exhaust operation for performing only exhaust. To do It can be. Therefore, ventilation can be appropriately performed in a desired ventilation operation mode according to the state of indoor air.

  Moreover, when a control means can control separately the rotation speed of the 1st air blower of a 1st air blower, and the rotation speed of the 2nd air blower of a 2nd air blower, it can change ventilation airflow suitably. .

  When a display device that can understand each of the ventilation operation modes of the air supply / exhaust operation mode, the air supply operation mode, and the exhaust operation mode is provided at the front portion of the indoor unit, the display device looks at a glance. Can know the state of ventilation operation.

  Furthermore, the display device is provided with a pilot display section for indicating that the air is ventilated, and an air supply level display section which is provided on one side with the pilot display section in the middle and indicates the level of the air supply air volume. When the exhaust air level indicator is provided on the other side and indicates the level of the exhaust air volume, the supply air volume and the exhaust air volume can be easily understood and the ventilation can be easily adjusted. .

  An object of the present invention is to provide a pair of ventilation pipes and to select a ventilation operation mode other than the air supply / exhaust operation in the air conditioner capable of performing the air supply / exhaust operation in which both air supply and exhaust are performed simultaneously. The air supply / exhaust operation mode in which the operation unit performs both exhaust for exhausting indoor air to the outdoors and air supply for taking in outdoor air, air supply operation mode in which only air intake for taking in outdoor air is performed, and , It is possible to select each ventilation operation mode of the exhaust operation mode in which only the exhaust that exhausts indoor air to the outdoors is performed, and output the selected ventilation operation mode to the control means, and the control means instructs the supply / exhaust operation If there is, the first air blower is supplied and the second air blower is exhausted. If there is an air supply operation instruction, the first air blower is supplied, and if there is an exhaust operation instruction, the second air blower is operated. It was achieved by evacuating operation the location.

  Next, a first embodiment of an air conditioner according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an indoor unit and an outdoor unit of an air conditioner according to the present invention. FIG. 2 is a cross-sectional view of the indoor unit. FIG. 3 is a partially cutaway perspective view of a main part of the indoor unit. 4A and 4B are explanatory diagrams of the remote controller, where FIG. 4A is a front view and FIG. 4B is a front view with the front door removed. FIG. 5 is an explanatory diagram of control of the air conditioner, where (a) is a table of operation patterns, and (b) is an input / output diagram of the control device. FIG. 6 is a schematic explanatory diagram during the air supply / exhaust operation. FIG. 7 is a schematic explanatory diagram at the time of double exhaust. FIG. 8 is a flowchart when an instruction for the ventilation operation mode is given from the operation unit. FIG. 9 is a flowchart in the automatic ventilation operation based on the detection of the air pollution sensor. 10A and 10B are explanatory diagrams of the ventilation display device, in which FIG. 10A is a front view, FIG. 10B is a schematic diagram of a ventilation stop state, FIG. 10C is a schematic diagram during a supply / exhaust operation, and FIG. (E) is a schematic diagram of a state where the supply air flow rate and the exhaust air flow rate are made different during the air supply / exhaust operation, and (f) is a state where the air flow rate is high during the air supply operation. Schematic diagram, (g) is a schematic diagram of a state where the air volume is medium during the air supply operation, (h) is a schematic diagram of a state where the air volume is medium during the exhaust operation, and (i) is a high air volume during the exhaust operation. It is the schematic of a state. In FIG. 5B, only main components related to ventilation are shown, and other components not shown are also connected to the control device.

First, the overall configuration of the air conditioner will be described.
In FIG. 1, the air conditioner includes an indoor unit 1 and an outdoor unit 3 connected to the indoor unit 1 through a refrigerant pipe 2. The indoor unit 1 is installed indoors, while the outdoor unit 3 is installed outdoors, and the refrigerant pipe 2 connects the indoor unit 1 and the outdoor unit 3 through a hole 4 formed in the building. Yes. The outdoor unit 3 includes a compressor (not shown) for compressing refrigerant, an outdoor unit heat exchanger (not shown), a refrigerant flow switching valve (not shown) for switching the refrigerant circulation flow path, and a heat exchanger blower. (Not shown). During operation of the outdoor unit 3, the refrigerant in the refrigeration cycle circulates from the outdoor unit 3 to the indoor unit 1 via the refrigerant pipe 2 for heating and cooling.

  In FIG. 2, the indoor unit 1 includes an indoor unit heat exchanger 6 and a circulation fan 7. A movable front panel 8 is provided on the front surface of the indoor unit 1, and an air suction port 11 is provided on the rear side of the front panel 8. During operation of the indoor unit 1, the front panel 8 moves to the front side, and indoor air can be taken into the indoor unit 1 from the air suction port 11. Further, when the indoor unit 1 is stopped, the front panel 8 moves to the rear side, that is, the air suction port 11 side to improve the appearance. An air outlet 12 is provided below the indoor unit 1. A filter 13 (see FIG. 2) is provided between the air suction port 11 and the indoor unit heat exchanger 6. Further, an ultraviolet lamp device 14 is disposed above the indoor unit heat exchanger 6. Further, in FIGS. 1 and 10, a ventilation display device 15 (details will be described later) is provided on the lower front surface of the indoor unit 1.

  Then, when the circulation blower 7 of the indoor unit 1 is operated, indoor air is sucked from the air suction port 11 and filtered by the filter 13, and then heat is exchanged by the indoor unit heat exchanger 6. 12 is blowing out into the room. In this way, while the indoor air is circulated by the circulation fan 7, this air is heat-exchanged by the indoor unit heat exchanger 6.

  The air outlet 12 is provided with louvers 16 and 17 for changing the air blowing direction. The left-right louver 16 changes the horizontal direction of the air blowing, and the up-down louver 17 changes the vertical direction of the air blowing.

  In FIG. 3, the 1st air blower 21 and the 2nd air blower 22 are provided in the edge part in the indoor unit 1. In FIG. 1 and FIG. 6, each of the air blowers 21 and 22 is connected to the vent pipes 23 and 24, and the vent pipes 23 and 24 have the holes 4 formed in the building in the same manner as the refrigerant pipe 2. It leads to the outdoors and communicates with the outside air.

  In FIG. 6, the first blower 21 is a supply / discharge fan, and includes a first blower 31, a suction-side damper 32, and a discharge-side damper 33. The first blower 31 is a sirocco fan that can obtain a sufficient air volume, and flows air in a certain direction during operation. Moreover, as illustrated in FIGS. 6 and 7, the suction side of the first blower 31 is selectively connected to either the first ventilation pipe 23 or the space in the indoor unit 1 by the suction side damper 32. . On the other hand, the discharge side of the first blower 31 is selectively connected to either the first ventilation pipe 23 or the space in the indoor unit 1 by the discharge side damper 33. Thus, the dampers 32 and 33 function as air path switching means for switching the air flow. When the first air blower 21 is in the air supply operation, the dampers 32 and 33 are switched to the air supply switching position as shown in FIG. That is, the suction side damper 32 connects the suction side of the first blower 31 to the first ventilation pipe 23, and the discharge side damper 33 connects the discharge side of the first blower 31 to the space in the indoor unit 1. On the other hand, when the first blower 21 is in the exhaust operation, the dampers 32 and 33 are switched to the exhaust switching position as shown in FIG. That is, the suction side damper 32 connects the suction side of the first blower 31 to the space in the indoor unit 1, and the discharge side damper 33 connects the discharge side of the first blower 31 to the first ventilation pipe 23.

  The second blower 22 is an exhaust-only blower and includes a second blower 41. Unlike the first blower 21, the second blower 22 does not include a damper that is an air path switching unit. The 2nd air blower 41 is a sirocco fan like the 1st air blower 31, and flows air in a fixed direction at the time of operation. As shown in FIGS. 6 and 7, the second blower 41 has a suction side connected to a space in the indoor unit 1, and a discharge side connected to the second ventilation pipe 24.

  In this way, the first air blower 21 is a supply / exhaust air blower, and the second air blower 22 is an exhaust-only air blower. Therefore, as shown in FIG. 5A, the air conditioner of the first embodiment is used. There are four types of ventilation patterns: air supply / exhaust operation, single air supply operation, single exhaust operation, and double exhaust operation.

  The control device 46 that is a control means of the air conditioner is configured by a microcomputer or the like in the indoor unit 1 and controls the operation of the air conditioner. In particular, with respect to ventilation, as shown in FIG. 5B, the control device 46 includes a CO 2 sensor 47 that is disposed near the heat exchanger 6 for indoor units and detects the concentration of carbon dioxide gas. A signal from a gas sensor 48 arranged near the heat exchanger 6 to detect the smoke concentration of the cigarette and a remote controller 49 as an operation unit is input. The CO2 sensor 47 and the gas sensor 48 function as an air pollution sensor that detects air pollution. In addition, a drive signal is output from the control device 46 to the first blower 31 of the first blower device 21, the dampers 32 and 33, the second blower 41 of the second blower device 22, and the like, and the display device 15 is also ventilated. Is output. Further, various devices of the indoor unit 1 and various devices of the outdoor unit 3 are connected to the control device 46 so as to be able to input and output.

  As illustrated in FIG. 4, the remote controller 49 includes a display unit 51 and a front door 52 that can be opened and closed. Various operation buttons 53 are provided on the front door 52 and the main body of the remote control 49. As shown in FIG. 4B, the ventilation switching button 53a and the ventilation air volume button 53b, which are operation buttons related to ventilation, are exposed and can be operated when the front door 52 is opened. Further, a ventilation / cleaning button 53c, which is an operation button for automatically ventilating according to the degree of air pollution, is provided on the front door 52 as shown in FIG. 4 (a). When the ventilation switching button 53a is pressed, the controller 46 of the indoor unit 1 main body is instructed in order of supply / exhaust operation in which both supply and exhaust are performed simultaneously, supply operation in which only supply is performed, and exhaust operation in which only exhaust is performed. And the ventilation operation mode is displayed on the display unit 51. In addition, when the ventilation air volume button 53b is pressed, the ventilation air volume instruction can be gradually decreased from strong to weak, and the instruction is input to the control device 46 of the indoor unit 1 main body.

  The display device 15 receives from the control device 46 the air supply / exhaust operation, the ventilation operation mode of the air supply operation and the exhaust operation, and the capacity ratio of the ventilation air volume (ratio to the maximum capacity). As shown in FIG. 10, the display device 15 is provided on the left side with a pilot display unit 56 that displays that the air is ventilated, and the pilot display unit 56 in the middle, and the level of the supply air flow rate. An air supply level display unit 57 shown in a bar shape and an exhaust level display unit 58 provided on the right side and showing the level of the exhaust air volume in a bar shape are provided. The lengths of the air supply level display unit 57 and the exhaust level display unit 58 are configured to be substantially the same.

  Based on the input data from the control device 46, the pilot display unit 56 is turned on during ventilation operation, and the capacity ratio of the air volume is displayed in a bar shape on the air supply level display unit 57 and the exhaust level display unit 58. That is, in the air supply / exhaust operation and the air supply operation, the ratio is displayed as a ratio to the maximum air volume of each of the air blowers 21 and 22, and 100% as shown in FIGS. 10 (c) and 10 (f) in the case of the maximum air volume. become. And when the air volume of each air blower 21 and 22 falls from the maximum air volume, as shown in FIGS. 10 (d), (e) and (g), the length of the bar displayed on the level display sections 57 and 58 Becomes shorter. During the air supply / exhaust operation, it is possible to make the air volume of the first air blower 21 different from the air volume of the second air blower 22 by the ventilation air volume button 53b, and in that case, as shown in FIG. The bar length displayed on the air supply level display unit 57 is different from the bar length displayed on the exhaust level display unit 58.

  Further, in the case of exhaust operation, there are single exhaust and double exhaust, and the maximum exhaust capacity is achieved in the case of double exhaust. Therefore, in the double exhaust state in which the first air blower 21 and the second air blower 22 are fully operated, it becomes 100% as illustrated in FIG. 10 (i), and the second air blower 22 is fully operated with the single exhaust. Even so, as shown in FIG. 10 (h), the length is 50%, and the length of the bar is halved.

  In this manner, the display device 15 for ventilation can immediately know from the pilot display section 56 whether or not the ventilation operation is being performed. Further, the supply / exhaust operation, the supply operation, or the exhaust operation can be seen at a glance from the supply air level display unit 57 and the exhaust gas level display unit 58 arranged on the left and right. Moreover, since the air supply level display unit 57 and the exhaust level display unit 58 display the ratio of the maximum air volume in a bar shape, the adjustment of ventilation becomes easy.

Next, the operation flow when the ventilation operation mode is instructed will be described based on the flowchart of FIG.
In step 1, every time the ventilation switching button 53a is pressed, the operation is switched to the air supply / exhaust operation, the air supply operation, and the exhaust operation, and this instruction goes from the remote controller 49 to the control device 46. Further, when the ventilation air volume button 53b is pressed, the instructed air volume gradually decreases from high to medium and weak, and this instruction also goes from the remote controller 49 to the control device 46. The adjustment of the air volume is performed by changing the number of rotations of the blowers 31 and 41 and the number of blowers 31 and 41 to be operated (that is, single or double). The control device 46 performs single exhaust when the air volume is medium and weak in the exhaust operation, and performs double exhaust when the air volume is strong in the exhaust operation. In the case of the first embodiment, the air supply operation cannot perform double air supply, but only single air supply.

  The control device 46 goes to step 2 in the case of supply / exhaust operation, goes to step 5 in case of single supply, goes to step 8 in case of single exhaust, and goes to step 11 in case of double exhaust. .

  In step 2, the control device 46 outputs a drive signal to the dampers 32 and 33 so as to switch to the air supply switching position. In addition, when the dampers 32 and 33 are already in an air supply switching position, the control apparatus 46 maintains the dampers 32 and 33 in the position. In addition, before outputting a signal from the control apparatus 46, since it is natural to maintain the state which should be instruct | indicated, the description is abbreviate | omitted below. Then go to step 3.

  In step 3, the control device 46 outputs an operation signal to the first blower 31 to drive the first blower 31 at a rotation speed corresponding to the instructed air volume. Then, the 1st air blower 21 which is an air supply / discharge fan performs air supply operation. Then go to step 4.

  In step 4, the control device 46 outputs an operation signal to the second air blower 22 that is an exhaust-only air blower, drives the second air blower 22 at a rotational speed corresponding to the instructed air volume, and returns to step 1. . The state is maintained until the remote controller 49 is operated again and the ventilation operation mode is changed.

  Then, in the case of single air supply in Step 1, go to Step 5. In Steps 5 and 6, as in Steps 2 and 3, the control device 46 causes the first air blower 21 that is a supply / discharge fan to perform an air supply operation. Then go to step 7.

  In step 7, the control device 46 stops the second blower 22 that is an exhaust-only blower, returns to step 1, and maintains that state until the ventilation operation mode is changed.

  In the case of single exhaust in Step 1, go to Step 8. In step 8, the controller 46 goes to step 9 without outputting a signal to the dampers 32 and 33.

  In step 9, the control device 46 outputs a stop signal to the first blower 31 to stop the first blower 31. Then, the 1st air blower 21 which is an air supply / discharge fan stops. Then, go to step 10.

  In step 10, the control device 46 outputs an operation signal to the second blower 22 that is an exhaust-only blower, operates the second blower 22, and returns to step 1. The state is maintained until the ventilation operation mode is changed again.

  In step 1, if double exhaust is performed, the process goes to step 11. In step 11, the control device 46 outputs a drive signal to the dampers 32 and 33 so as to switch to the exhaust gas switching position. Then, go to step 12.

  In step 12, the control device 46 outputs an operation signal to the first blower 31 to operate the first blower 31 at the rotation speed corresponding to the instructed air volume. Then, the 1st air blower 21 which is an air supply / discharge fan performs exhaust operation. Then, go to step 13.

  In step 13, the control device 46 outputs an operation signal to the second air blower 22 that is an exhaust-only air blower, operates the second air blower 22 at the rotation speed corresponding to the instructed air volume, and returns to step 1. . The state is maintained until the remote controller 49 is operated again and the ventilation operation mode is changed.

  Next, the flow of the ventilation operation performed based on the degree of air pollution detected by the air pollution sensors such as the CO2 sensor 47 and the gas sensor 48 will be described based on the flowchart of FIG.

  In step 20, when the ventilation / cleaning button 53c of the remote controller 49 is pressed, an instruction signal for the ventilation / air cleaning operation (that is, automatic ventilation operation based on the air pollution level) is transmitted to the control device 46, and the ventilation / air cleaning operation is started. . Then, go to step 21.

  In step 21, the air pollution degree, which is a detection value of the CO 2 sensor 47 and the gas sensor 48, is input to the control device 46. Then, go to step 22. In step 22, the control device 46 determines whether the air pollution level is high, medium or low compared with the preset high and medium set values, and goes to step 23 if it is high. If yes, go to step 24; if low, go to step 25.

  And in step 23, the control apparatus 46 performs the above-mentioned steps 11-13, and performs double exhaust_gas | exhaustion driving | operation. Then, the process returns to step 21, and the state is maintained until the air pollution level is other than high.

  Moreover, in step 24, the control apparatus 46 performs the above-mentioned steps 8-10, and performs single exhaust operation. Then, the process returns to step 21, and the state is maintained until the air pollution level is other than medium.

  Furthermore, in step 25, the control device 46 outputs a stop signal to the air blowers 21 and 22 to stop the air blowers 21 and 22. Then, the process returns to step 21, and the stopped state is maintained until the air pollution level is other than low.

  In this way, the double exhaust operation is performed when the air pollution level is high, the single exhaust operation is performed when the air pollution level is medium, and the exhaust operation is stopped when the air pollution level is low.

  In this way, the control device as the control means is 1) means for causing the first air blower to perform an air supply operation and exhausting the second air blower when there is an air supply / exhaust operation instruction, and 2) if there is an air supply operation instruction. Means for causing the first air blower to perform an air supply operation, and 3) means for causing the second air blower to perform an exhaust operation when an exhaust operation instruction is issued.

  In addition to the above means, the control means includes means for executing each process corresponding to each process to be executed. Further, it is not always necessary to have all the above means.

  Next, a second embodiment of the air conditioner according to the present invention will be described. FIG. 11 is a table of operation patterns for control of the air conditioner of the second embodiment. FIG. 12 is a schematic explanatory diagram for double air supply. In the description of the second embodiment, components corresponding to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the first embodiment described above, the second blower 22 is an exhaust-only blower, but in the second embodiment, a second blower 60 is provided in place of the second blower 22. The second blower 60 is the same supply / discharge blower as the first blower 21 and includes a second blower 61, a suction side damper 62, and a discharge side damper 63. The second blower 61, the suction side damper 62, and the discharge side damper 63 have the same structure and function as the first blower 31, the suction side damper 32, and the discharge side damper 33 of the first blower device 21. The 2 air blower 60 can perform both supply and exhaust. Therefore, in the second embodiment, a double air supply operation can be performed as shown in FIG.

  Next, the flow of operation when the ventilation operation mode is instructed in the air conditioner of the second embodiment will be described. Only the steps that are added or modified are described. In step 1 of FIG. 8, during the air supply operation, the control device 46 performs single air supply when the air volume is medium and weak, and performs double air supply when the air volume is high. When double air supply is performed, the following steps 14 to 16 (not shown) are added to the flow shown in FIG. The first air blower 21 is operated for air supply (step 14), the dampers 62 and 63 are set to the air supply switching position (step 15), and the second fan 61 is operated (step 16). Then, as shown in FIG. 12, both the first blower device 21 and the second blower device 60 perform the air supply operation.

  In Steps 4, 7, 10, and 13, since the second blower 60 is a supply / discharge fan, the display of “exhaust-only device” becomes “supply / discharge fan” and “operation” The display is “exhaust operation”. The flow for causing the second blower 60 to perform the exhaust operation is the same as the flow for performing the exhaust operation of the first blower 21 (steps 11 and 12). The dampers 62 and 63 are set to the exhaust switching position, and the second blower 61 is turned on. Make it work.

As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Examples of modifications of the present invention are illustrated below.
(1) The blower is preferably a sirocco fan, but can be other types of blowers. For example, a blower capable of rotating in reverse is also possible, and in this case, air path switching means such as dampers 32 and 33 are not required. However, in order to ensure a large air volume, a blower that rotates in a certain direction such as a sirocco fan is preferable.

(2) The order of the steps in each flowchart can be changed as appropriate.
(3) The control means is constituted by a microcomputer, but other configurations are possible.

(4) The refrigerant pipe 2 and the ventilating pipes 23 and 24 can be inserted into the same hole of the building, or can be inserted into different holes, respectively. In addition to the refrigerant pipe 2 and the ventilation pipes 23 and 24, a drain pipe, a power line, a communication line, or the like can be inserted into the hole for the air conditioner in the building.
(5) In the automatic ventilation operation based on the degree of air pollution, the single exhaust operation and the double exhaust operation are performed, but the single supply operation and the double supply operation can also be performed.

(6) The air pollution sensor can be selected as appropriate as long as it can detect dirt in the room air, and can be a sensor other than a CO2 sensor or a gas sensor.
(7) In the automatic ventilation operation based on the air pollution level, the air flow rate is switched between single exhaust operation and double exhaust operation. By changing the rotation speed of the blower, the air flow rate is changed according to the air pollution level. It is also possible to adjust. For example, in the air supply / exhaust operation, the single exhaust operation, or the single air supply operation, the rotational speed of the blower can be changed by the control device according to the degree of air pollution.

(8) The first air blower 21 is a supply / exhaust air blower, but may be a dedicated air supply blower.
(9) Double operation is not always necessary. However, since a large air volume can be ensured, it is preferable to enable double operation.

(10) The arrangement positions of the air supply level display section 57 and the exhaust level display section 58 can be changed as appropriate. For example, the left and right arrangement positions can be reversed. It is also possible not to provide the pilot display unit 56.
(11) Although the operation unit is composed of the remote controller 49, if the ventilation operation mode or the like can be designated, the arrangement position, structure, etc. thereof can be changed as appropriate, for example, provided in the main body of the indoor unit 1 or the like. It is also possible.

  In an air conditioner that can perform a supply / exhaust operation in which a pair of ventilation pipes are provided to perform both supply and exhaust at the same time, an operation unit is operated to supply / exhaust at the same time to supply and exhaust Since it is possible to select a ventilation operation mode of only an air supply operation that performs only exhaust and an exhaust operation that performs only exhaust, it is optimal to apply to an air conditioner that performs ventilation together with air conditioning.

FIG. 1 is a perspective view of an indoor unit and an outdoor unit of an air conditioner according to the present invention. FIG. 2 is a cross-sectional view of the indoor unit. FIG. 3 is a partially cutaway perspective view of a main part of the indoor unit. 4A and 4B are explanatory diagrams of the remote controller, where FIG. 4A is a front view and FIG. 4B is a front view with the front door removed. FIG. 5 is an explanatory diagram of control of the air conditioner, where (a) is a table of operation patterns, and (b) is an input / output diagram of the control device. FIG. 6 is a schematic explanatory diagram during the air supply / exhaust operation. FIG. 7 is a schematic explanatory diagram at the time of double exhaust. FIG. 8 is a flowchart when an instruction for the ventilation operation mode is given from the operation unit. FIG. 9 is a flowchart in the automatic ventilation operation based on the detection of the air pollution sensor. 10A and 10B are explanatory diagrams of the ventilation display device, in which FIG. 10A is a front view, FIG. 10B is a schematic diagram of a ventilation stop state, FIG. 10C is a schematic diagram during a supply / exhaust operation, and FIG. (E) is a schematic diagram of a state where the supply air flow rate and the exhaust air flow rate are made different during the air supply / exhaust operation, and (f) is a state where the air flow rate is high during the air supply operation. Schematic diagram, (g) is a schematic diagram of a state where the air volume is medium during the air supply operation, (h) is a schematic diagram of a state where the air volume is medium during the exhaust operation, and (i) is a high air volume during the exhaust operation. It is the schematic of a state. FIG. 11 is a table of operation patterns for control of the air conditioner of the second embodiment. FIG. 12 is a schematic explanatory diagram for double air supply.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Refrigerant piping 3 Outdoor unit 4 Building hole 15 Ventilation display device 21 1st ventilation device 22 2nd ventilation device 23 1st ventilation pipe 24 2nd ventilation tube 31 1st ventilation fan 41 2nd ventilation fan 46 Control apparatus (Control means)
49 Remote control (operation unit)
56 Pilot display part 57 Air supply level display part 58 Exhaust level display part 60 2nd air blower 61 2nd air blower

Claims (4)

In the air conditioner where the refrigerant pipe from the indoor unit is led to the outside through the hole of the building and connected to the outdoor unit,
A first ventilation pipe and a second ventilation pipe inserted into the holes of the building;
A first air blower which is disposed in the indoor unit and connected to the first ventilation pipe;
A second air blower disposed in the indoor unit and connected to the second ventilation pipe;
Control means for controlling the first blower and the second blower;
Air supply / exhaust operation mode in which both exhaust for exhausting indoor air to the outdoors and supply air for taking in outdoor air are performed, air supply operation mode in which only air supply for taking in outdoor air is performed, and indoor air in the outdoors An operation unit capable of selecting each ventilation operation mode of the exhaust operation mode in which only exhaust to be discharged is performed, and outputting the selected ventilation operation mode to the control means,
The first air blower has an air supply function of sucking air outside the building and supplying air into the room through the first ventilation pipe,
The second air blower has an exhaust function of sucking indoor air and exhausting the air outside the building through the second ventilation pipe,
When there is an air supply / exhaust operation instruction, the control means causes the first air blower to perform an air supply operation and causes the second air blower to perform an air exhaust operation, and when there is an air supply operation instruction, causes the first air blower to perform an air supply operation and exhaust operation. An air conditioner that causes the second blower to perform an exhaust operation when instructed. The first air blower of the first air blower can change the rotation speed, and by changing the rotation speed, the air flow rate of the first air blower can be adjusted,
The second blower of the second blower can change the rotation speed, and by changing the rotation speed, the amount of blown air of the second blower can be adjusted,
2. The air conditioner according to claim 1, wherein the control unit is capable of individually controlling the rotation speed of the first blower of the first blower and the rotation speed of the second blower of the second blower. Air supply / exhaust operation mode in which both exhaust for exhausting indoor air to the outdoors and supply air for taking in outdoor air are performed, air supply operation mode in which only air supply for taking in outdoor air is performed, and indoor air in the outdoors The air conditioner according to claim 1 or 2, wherein a display device for understanding each ventilation operation mode of the exhaust operation mode in which only exhaust exhausted to the inside is performed is provided at a front portion of the indoor unit. The display device is a pilot display unit that displays that the air is ventilated, and an air supply level display unit that is provided on one side with the pilot display unit in the middle and that indicates the level of the air supply air amount, 4. An air conditioner according to claim 3, further comprising an exhaust level display portion provided on the other side and indicating an exhaust air flow level.

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