KR100741746B1 - Air conditioner - Google Patents

Abstract

A pair of ventilation pipes are provided, and simultaneous exhaust / exhaust operation which simultaneously supplies and exhausts air can be carried out, and only the exhaust can be operated.

The air conditioner is arranged in the indoor unit with the ventilation pipes 23 and 24 inserted into the hole 4 of the building, the first blowing device 21 arranged in the indoor unit 1 and connected to the first ventilation pipe. At the same time, a second blower device 22 connected to the second vent pipe and exhausting air in the room and a control means 46 are provided. And if the control means 46 stops a 1st air blower, if there is an individual exhaust instruction, it exhausts a 2nd air blower, performs the ventilation operation only for exhaust, and if there exists an air supply / exhaust operation instruction, Since the first blower is operated and the second blower device is exhausted and the ventilation operation is performed by the simultaneous air supply and exhaust, the ventilation operation by the simultaneous air supply and exhaust that simultaneously performs both the air supply and the exhaust can be performed. Of course, the ventilation operation only for exhaust can also be performed.

Air conditioner

Description

Air conditioner {AIR CONDITIONER}

1 is a perspective view of an indoor unit and an outdoor unit of an air conditioner according to the present invention.

2 is a cross-sectional view of the indoor unit.

3 is a partially cutaway perspective view of the main portion of the indoor unit.

4 is an explanatory view of the remote control, (a) is a front view, and (b) is a front view with the front door removed.

5 is an explanatory diagram for controlling the air conditioner, (a) is a table of driving patterns, and (b) is an input / output diagram of the control device.

6 is a schematic explanatory diagram at the time of supply-discharge operation.

7 is a schematic explanatory diagram at the time of double exhaust.

8 is a flowchart when an instruction for the ventilation operation mode is given from the operation unit.

9 is a flowchart in automatic ventilation operation based on detection of an air pollution sensor.

10 is a table of operation patterns of control of the air conditioner of the second embodiment.

It is a schematic explanatory drawing at the time of double air supply.

* Brief description of the code *

1 indoor unit 2 refrigerant piping

3 outdoor unit 4 hole in the building

21 first blower 22 second blower

23 first ventilator 24 second ventilator

31 First blower 32 Suction damper (wind changeover means)

33 Discharge-side damper (window switching means) 46 Control device (control means)

47 CO2 sensor (air pollution sensor) 48 Gas sensor (air pollution sensor)

60 Second blower 61 Second blower

62 Suction damper (2nd wind channel switching means)

63 Discharge-side damper (second wind path switching means)

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

Conventionally, air conditioners such as room air conditioners generally do not have a ventilation function, and when the air in the room is contaminated, it is necessary to inhale outside air and to ventilate, for example, by opening a window appropriately. .

Therefore, conventionally, what provided the ventilation apparatus to the air conditioner is proposed. For example, as described in Japanese Patent Application Laid-Open No. 2001-304645, an air supply duct (i.e., a ventilation pipe) and an exhaust duct are provided, and an air supply blower is provided in the air supply duct, and an exhaust air blower in the exhaust duct. There is an air conditioner installed.

[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-304645

By the way, in this kind of air conditioner, when the room is filled with cigarette smoke etc., air supply is not performed and it may want to exhaust | exhaust strongly. In addition, there is a case where it is desired to supply fresh air outside. However, as described above, when the exhaust and the air supply are respectively performed by a dedicated duct or a blower, in order to obtain a desired air volume during the exhaust or the air supply, it is necessary to increase the blowing capacity of the duct and the blower, and the volume of the duct and the blower. This increases, resulting in an increase in the overall size of the air conditioner. Therefore, it was not suitable for air conditioners, such as room air conditioner in which a compact thing is calculated | required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described situation, and it is possible to perform a ventilation operation only for exhaust while providing a pair of ventilation pipes and allowing a ventilation operation by a simultaneous air supply and exhaust to simultaneously perform both supply and exhaust. It aims to be able to provide an air conditioner.

In the invention described in claim 1, the air conditioner in which the refrigerant pipe from the indoor unit is led to the outside through a hole in the building and connected to the outdoor unit includes: a first ventilation pipe and a first air pipe inserted into the hole of the building; 2 ventilating pipes, a first blowing device arranged in the indoor unit and connected to the first ventilating pipe, and disposed in the indoor unit, and connected to the second venting pipe, inhaling indoor air, and drawing a second A second blowing device having an exhaust function for exhausting the building out of the building via a ventilation pipe; and a control means for controlling the first blowing device and the second blowing device, and the control means has a single exhaust instruction, At the same time as the first blower is stopped, the second blower is exhausted to perform ventilation operation only for exhaust, and if the air supply and exhaust operation instruction is given, the first blower is operated. In a second operation by the exhaust blower, it characterized in that running the ventilation operation according to the simultaneous air supply and exhaust.

In the air conditioner of Claim 1, the invention of Claim 2 WHEREIN: The said 1st blower connects the 1st blower and the discharge side of the said 1st blower with the space in an indoor unit, and a 1st blower Of the air supply switching position connecting the suction side of the first blower to the first ventilation pipe and the suction side of the first blower fan with the space in the indoor unit, and simultaneously switching the discharge side of the first fan to the exhaust switching position connecting the first blower to the first ventilation pipe. A switching means is provided.

In the air conditioner according to claim 1 or 2, in the air conditioner according to claim 1 or 2, the control means switches the air flow channel switching means to the air supply switching position to operate the first blower if there is an instruction for supplying and exhausting air. At the same time, the second blower is exhausted, and if a single exhaust instruction is given, the first blower is stopped, and the second blower is exhausted. It operates by switching to operate a 1st blower, and exhaust-operating a 2nd blower. It is characterized by the above-mentioned.

According to the air conditioner according to claim 1, the air conditioner according to claim 1 is provided with an air pollution sensor that detects air pollution in the indoor unit, and the control means is an air pollution sensor if an automatic ventilation instruction is given. When the detection value is increased, double operation of the first blower and the second blower is performed from the single operation of the first blower or the second blower.

In the air conditioner according to claim 5, the invention according to claim 5 is characterized in that the second blower connects the second blower and the discharge side of the second blower with the space in the indoor unit, and at the same time, the second blower. Air supply switching position for connecting the suction side of the second blower tube and suction side of the second blower with the space in the indoor unit, and simultaneously switching the discharge side of the second blower to the exhaust switching position for connecting the second blower tube. It is characterized by including the two-window switching means.

<Example>

The purpose of the present invention is to provide a air conditioner that provides a ventilation operation only for exhausting, while providing a pair of ventilation pipes, allowing the ventilation operation by the simultaneous air supply and exhaust to simultaneously supply and exhaust air. In the air conditioner connected to the outdoor unit through the refrigerant pipe from the indoor unit and connected to the outdoor unit, the first and second ventilation pipes inserted into the holes of the building, and the indoor unit, It is arranged, and is connected to the first ventilation pipe and the first ventilation device, and disposed in the indoor unit, and is connected to the second ventilation pipe, and sucks the air in the room and exhausts the air through the second ventilation pipe to the outside of the building. And a second blower having an exhaust function, and control means for controlling the first blower and the second blower, wherein the control means is independent. If the instruction is already instructed, the first blower is stopped, the second blower is exhausted to perform exhaust operation only for exhaust, and if there is an instruction for supplying and exhausting air, the first blower is operated and This was achieved by exhausting the second blower device and performing the ventilation operation by the simultaneous air supply and exhaust.

EXAMPLE 1

Next, the first embodiment of the air conditioner according to the present invention will be described with reference to FIGS. 1 to 9. 1 is a perspective view of an indoor unit and an outdoor unit of an air conditioner according to the present invention. 2 is a cross-sectional view of the indoor unit. 3 is a partially cutaway perspective view of the main portion of the indoor unit. 4 is an explanatory view of the remote control, (a) is a front view, and (b) is a front view with the front door removed. 5 is an explanatory diagram for controlling the air conditioner, (a) is a table of driving patterns, and (b) is an input / output diagram of the control device. 6 is a schematic explanatory diagram at the time of supply-discharge operation. 7 is a schematic explanatory diagram at the time of double exhaust. 8 is a flowchart when an instruction for the ventilation operation mode is given from the operation unit. 9 is a flowchart in automatic ventilation operation based on detection of an air pollution sensor. That is, in FIG. 5B, only one main component related to ventilation is described, 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 that is connected to the indoor unit 1 and the 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 the holes 4 formed in the building. You are connected.

The outdoor unit 3 also includes a compressor (not shown) for compressing a refrigerant, a heat exchanger for an outdoor unit (not shown), a refrigerant flow path switching valve (not shown) for switching a circulation flow path of the refrigerant, and a blower for a heat exchanger ( (Not shown). At the time of operation of the outdoor unit 3, the refrigerant of the refrigeration cycle is circulated through the indoor unit 1 via the refrigerant pipe 2 for cooling of the outdoor unit 3.

In FIG. 2, the indoor unit 1 is equipped with the indoor unit heat exchanger 6 and the circulation blower 7. As shown in FIG. A movable front panel 8 is provided on the front surface of the indoor unit 1, and an air intake port 11 is provided on the rear side of the front panel 8. While the indoor unit 1 is in operation, the front panel 8 moves to the front side, and the indoor air can be blown into the indoor unit 1 from the air intake port 11. In addition, when the indoor unit 1 is stopped, the front panel 8 moves to the rear side, that is, to the air intake port 11 side, to improve the appearance. The air outlet 12 is provided below the indoor unit 1. A filter 13 (see FIG. 2) is provided between the air intake port 11 and the indoor unit heat exchanger 6. Moreover, the ultraviolet lamp device 14 is arrange | positioned above the heat exchanger 6 for indoor units.

Then, when the circulating blower 7 of the indoor unit 1 operates, indoor air is sucked from the air intake port 11, filtered by the filter 13, and then heat exchanged in the indoor unit heat exchanger 6. The air is blown out from the air outlet 12 into the room. In this way, the air is heat-exchanged in the indoor unit heat exchanger 6 while circulating the indoor air in the circulation blower 7.

In addition, louvers 16 and 17 are provided in the air blower outlet 12 for changing the air blowout direction. The left-right moving louver 16 changes the direction of the left-right direction of the blowout of air, and the up-and-down moving louver 17 changes the up-down direction of the blowout of air.

3, the 1st air blower 21 and the 2nd air blower 22 are provided in the edge part of the indoor unit 1. As shown in FIG. 1 and 6, each of the blowers 21 and 22 is connected to ventilation pipes 23 and 24, and the ventilation pipes 23 and 24 are the same as the refrigerant pipe 2. Through the hole 4 formed in the building, it is led outdoors and communicates with the outside air.

6, the 1st blower apparatus 21 is equipped with the 1st blower 31, the suction side damper 32, and the discharge side damper 33 in the air supply and discharge blower. The 1st blower 31 is a Sirocco fan which can acquire sufficient air volume, and flows air in a fixed direction at the time of operation. 6 and 7, the suction side of the first blower 31 is either the first vent pipe 23 or the space in the indoor unit 1 by the suction side damper 32. It is optionally connected to.

On the other hand, the discharge side of the first blower 31 is selectively connected to either the first vent pipe 23 or the space in the indoor unit 1 by the discharge side damper 33. In this way, the dampers 32 and 33 function as wind path switching means for switching the flow of air.

And when the said 1st air blower 21 is air supply operation, as shown in FIG. 6, each damper 32, 33 is switched to an air supply switching position. That is, the suction side damper 32 connects the suction side of the first blower 31 to the first vent pipe 23, and the discharge side damper 33 connects the discharge side of the first blower 31 to the indoor unit 1. Is connected to the space inside.

On the other hand, when the 1st air blower 21 performs exhaust operation, as shown in FIG. 7, each damper 32, 33 is switched to an exhaust switching position. 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 vent pipe. (23).

Although the 2nd air blower 22 is equipped with the 2nd air blower 41 in the exhaust air blower, unlike the 1st air blower 21, it does not have the damper which is a wind path switching means. Similar to the first blower 31, the second blower 41 is a sirocco fan and flows air in a predetermined direction during operation. As shown in FIG. 6 and FIG. 7, the second blower 41 has a suction side connected to a space in the indoor unit 1, and a discharge side connected to a second vent tube 24.

In this way, since the first blower 21 is the air supply / discharge blower, and the second blower 22 is the exhaust blower, the air conditioner of the first embodiment is as shown in Fig. 5A. There are four types of ventilation patterns: air supply and exhaust operation, single air supply operation, single exhaust operation, and double exhaust operation.

The control apparatus 46 which is a control means of an air conditioner is comprised by the microcomputer in the indoor unit 1, etc., and controls the operation of an air conditioner. In particular, with regard to the ventilation, as shown in FIG. 5 (b), the control device 46 includes a CO2 sensor 47 and a room disposed near the heat exchanger 6 for the indoor unit and detecting the concentration of carbon dioxide gas. A signal from a gas sensor 48 arranged near the heat exchanger 6 for detecting the cigarette smoke concentration and the 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.

Further, a drive signal is output from the control device 46 to the first blower 31, the dampers 32 and 33 of the first blower 21, the second blower 41 of the second blower 22, and the like. do. Furthermore, the control apparatus 46 is connected to the various apparatuses of the indoor unit 1, the various apparatuses of the indoor unit 3, etc. so that input and output are possible.

The remote control 49 is provided with the display part 51 and the front door 52 which can be opened and closed as shown in FIG. And various operation buttons 53 are provided in the main body of the front door 52 and the remote control 49 in multiple numbers. As shown in FIG.4 (b), when the front door 52 is opened, the ventilation switching button 53a which is an operation button regarding ventilation is exposed, and it becomes operable.

Moreover, the ventilation air cleaning button 53c which is an operation button which automatically ventilates according to the pollution degree of air is provided in the front door 52, as shown to Fig.4 (a). When the ventilation switching button 53a is pressed, in turn, the control unit 46 of the indoor unit 1 main body can instruct the air supply / exhaust operation which performs both ventilation and exhaust, the air supply operation which performs only air supply, and the exhaust operation which performs only exhaust. At the same time, the ventilation operation mode is displayed on the display unit 51.

In addition, when the ventilation air volume button 53b is pressed, the directions of the ventilation air volume can be set to strong, medium, or weak in turn, and the instruction is input to the control device 46 of the indoor unit 1 main body.

Next, an operation flow when the ventilation operation mode is instructed will be described based on the flowchart of FIG. 8.

In step 1, each time the ventilation switching button 53a is pressed, the operation is switched to the supply / exhaust operation, the supply operation, and the exhaust operation, and the instruction goes from the remote control unit 49 to the control device 46. In addition, when the ventilation airflow volume button 53b is pressed, the indicated airflow is switched to strong, medium, and weak, and the instruction also goes from the remote control 49 to the control device 46. The air volume is adjusted by changing the number of rotations of the blowers 31 and 41 and by the number of the blowers 31 and 41 that are operated (that is, single or double).

And the control apparatus 46 exhausts solely when the air volume is medium and weak in exhaust operation, and double-exhausts when the air volume is strong in exhaust operation. That is, in the case of the first embodiment, the air supply operation cannot be performed by the double air supply, only the single air supply is performed.

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

In step 2, the control device 46 outputs a drive signal to the dampers 32, 33 so as to be switched to the air supply switching position. That is, when the dampers 32 and 33 are already in the air supply switching position, the control device 46 keeps the dampers 32 and 33 in that position. That is, since it is natural to maintain the state when it is in the state to be instructed before outputting the signal from the control device 46, the following description is omitted. Then, the process goes to step 3.

In step 3, the control apparatus 46 outputs an operation signal to the 1st blower 31, and operates the 1st blower 31. FIG. Then, the 1st air blower 21 which is the air supply and volume blower performs air supply operation. Then, go to step 4.

In step 4, the control apparatus 46 outputs an operation signal to the 2nd blower 22 which is an exhaust-only blower, operates the 2nd blower 22, and returns to step 1. FIG. Then, the remote controller 49 is operated again, and the state is maintained until the ventilation operation mode is changed.

And in the case of individual air supply in step 1, it goes to step 5. In Steps 5 and 6, in the same manner as Steps 2 and 3, the control device 46 causes the air supply operation of the first blower 21, which is the air supply / discharge blower. Then, the process goes to step 7.

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

In addition, in the case of single exhaust in step 1, it goes to step 8. In step 8, the control device 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, and stops the first blower 31. Then, the 1st air blower 21 which is a supply / discharge blower stops. Then, the process goes to step 10.

In step 10, the control apparatus 46 outputs a movable signal to the 2nd air blower 22 which is an exhaust fan exclusively, operates the 2nd air blower 22, and returns to step 1. FIG. Then, the state is maintained until the ventilation operation mode is changed again.

And in the case of double exhaust in step 1, it progresses to step 11. In step 11, the control device 46 outputs a drive signal to the dampers 32, 33 so as to be switched to the exhaust switching position. Then, the process goes to step 12.

In step 12, the control apparatus 46 outputs an operation signal to the 1st blower 31, and activates the 1st blower 31. FIG. Then, the 1st air blower 21 which is a supply / discharge blower performs exhaust operation. Then, the process goes to step 13.

In step 13, the control apparatus 46 outputs a movable signal to the 2nd air blower 22 which is an exhaust-only blower, activates the 2nd air blower 22, and returns to step 1. FIG. Then, the remote control 49 is operated again and the state is maintained until the ventilation operation mode is changed.

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

In step 20, when the ventilation air cleaning button 53c of the remote control unit 49 is pressed, an instruction signal of the ventilation air cleaning operation (i.e., automatic ventilation operation based on the air pollution degree) is transmitted to the control device 46, and the ventilation Air clean operation starts. Then, the process goes to step 21.

In step 21, the air pollution degree which is a detection value of the CO2 sensor 47 or the gas sensor 48 is input to the control apparatus 46. FIG. Then, the process goes to step 22. In step 22, the control apparatus 46 determines the high, medium, and low the air pollution degree compared with the high set value and the median set value which are preset, and in the case of high, Go to 23, go to step 24 in the case of me, go to step 25 in my case.

And in step 23, the control apparatus 46 performs the above-mentioned steps 11-13, and performs double exhaust operation. Then, the process returns to step 21 and the state is maintained until the air pollution degree becomes high.

In addition, 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 degree becomes other than medium.

Moreover, in step 25, the control apparatus 46 outputs a stop signal to the blower apparatuses 21 and 22, and stops the blower apparatuses 21 and 22. FIG. Then, the process returns to Step 21 and the state is maintained until the air pollution degree becomes low.

In this way, when the air pollution degree is high, the double exhaust operation is performed, and in the case of medium, the single exhaust operation is performed, and further, the exhaust operation is stopped in the low case.

In this manner, the control device as the control means 1) means for switching the air flow path switching means to the air supply switching position to start the first blower, and exhausting the second air blower when there is an instruction to supply the exhaust air; 2) a means for stopping the first blower when the independent exhaust instruction is given and exhausting the second blower; and 3) if a double exhaust instruction is given, the wind path switching means is switched to the exhaust switching position to provide the first blower. And means for exhausting the second blower device.

And the control means is equipped with the means which performs each process corresponding to each process performed besides the said means. In addition, it is not necessary to provide all the said means.

EXAMPLE 2

Next, a second embodiment of the air conditioner in the present invention will be described. 10 is a table of control operation patterns of the air conditioner of the second embodiment. It is a schematic explanatory drawing at the time of double air supply. That is, in the description of the second embodiment, the same reference numerals are given to the components corresponding to the components of the first embodiment, and the detailed description thereof is omitted.

In the first embodiment described above, the second blower 22 is an exhaust blower, but in the second embodiment, the second blower 60 is provided in place of the second blower 22. . The 2nd blower 60 is a supply / discharge blower similar to the 1st blower 21, and is equipped with the 2nd blower 61, the suction side damper 62, and the discharge side damper 63. As shown in FIG. The second blower 61, the suction side damper 62, and the discharge side damper 63 may include a first blower 31, a suction side damper 32, and a discharge side damper 33 of the first blower 21. It is the same structure, has the same function, and the 2nd air blower 60 can perform both air supply and exhaust. Therefore, in the second embodiment, as shown in FIG. 10, the double air supply operation can be performed.

Next, the flow of operation when the ventilation operation mode is instructed in the air conditioner of the second embodiment will be described. That is, only steps to be added or modified are described. In step 1 of FIG. 8, at the time of air supply operation, the control unit 46 supplies single air supply when the air volume is medium and weak, while double air supply is performed when the air volume is strong. And at the time of double air supply, the following steps 14-16 (not shown) are added to the flow shown in FIG. At the same time as the first blower 21 is supplied with air supply (step 14), the dampers 62 and 63 are set to the air supply switching position (step 15), and the second blower 61 is operated (step 16). Then, as shown in FIG. 11, both of the 1st air blower 21 and the 2nd air blower 60 perform air supply operation.

In addition, since the 2nd air blower 60 is an air supply apparatus for a double displacement, in step 4, 7, 10, 13, the indication of "exhaust apparatus for exclusive use" turns into "the air supply apparatus for rapid displacement", and also "operates". Is displayed as "Exhaust operation". And the flow which exhaust-operates the 2nd air blower 60 is the same as the flow (steps 11, 12) which exhaust-operates the 1st air blower 21, and sets dampers 62 and 63 to an exhaust switching position. The second blower 61 is operated.

As mentioned above, although the Example of this invention was described above, this invention is not limited to the said Example, It is possible to make various changes within the range of the summary of this invention described in the claim. Modifications of the present invention are illustrated below.

(1) The blower is preferably a sirocon fan, but may be another type of blower.

(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 ventilation pipes 23 and 24 can be inserted into the same hole of a building, and can also be inserted into different holes, respectively. That is, a drain pipe, an electric power line, a communication line, etc. can be inserted in addition to the refrigerant pipe 2 and the ventilation pipes 23 and 24 in the hole for the air conditioner of a building.

(5) Although the single exhaust operation and the double exhaust operation are performed at the time of the automatic ventilation operation based on the air pollution degree, it is also possible to perform single supply operation or double supply operation.

 (6) The air pollution sensor can be suitably selected as long as it can detect indoor air pollution, and may be a sensor other than a CO2 sensor or a gas sensor.

The control means switches the wind path switching means to the exhaust telephone position to start the first blower, and exhausts the second blower, thereby driving double exhaust by both the first blower and the second blower. Can be done. Therefore, a large air volume can be obtained at the time of exhaust. Therefore, it is most suitable to apply to the air conditioning apparatus which performs ventilation simultaneously with air conditioning.

According to the present invention as set forth in claim 1, the control means stops the first air blower when the single exhaust instruction is given, exhausts the second air blower, and executes the ventilation operation only for the exhaust. If the exhaust operation instruction is given, the first blower is operated, the second blower is exhausted, and the ventilation operation is performed by the simultaneous air supply and exhaust. Not only can the ventilation operation be performed, but also the ventilation operation of the exhaust can be performed.

In this invention of Claim 2, a 1st blower connects the 1st blower and the discharge side of the said 1st blower with the space in an indoor unit, and the suction side of a 1st blower is connected to a 1st ventilation pipe. Since the air supply switching position and the suction side of the first blower are connected to the space in the indoor unit, and the air passage switching means for switching the discharge side of the first blower to the exhaust switching position for connecting the first vent pipe, According to the ventilation form which requires one blower, it can switch to the ventilation form of two types of supply and exhaust.

In the present invention as set forth in claim 3, the control means switches the air flow path switching means to the air supply switching position to operate the first blower, and exhausts the second air blower when there is an air supply / exhaust operation instruction. If there is a single exhaust instruction, the first blower is stopped, and the second blower is exhausted. If there is a double exhaust instruction, the wind path switching means is switched to the exhaust switching position to operate the first blower. Since it is the structure which exhaust-operates a 2nd air blower, a 1st air blower and a 2nd air blower are made by switching a wind path switching means to an exhaust switch position, starting a 1st blower, and exhausting a 2nd blower. The double exhaust operation by both of the blowers can be performed, and a large amount of air can be ensured compared to the exhaust by only one of the first blower and the second blower. There. Therefore, the capacity | capacitance of a ventilation pipe and a blower can be made small, and the opening area of an opening made into a building, an indoor unit, etc. can be made small.

In the invention as set forth in claim 4, the indoor unit is provided with an air pollution sensor that detects air pollution, and the control means has a first blower when the detection value of the air pollution sensor is increased if an automatic ventilation instruction is given. Alternatively, since the double blower operation of the first blower and the second blower is performed from the independent operation of the second blower, when the air pollution degree is high, both the first blower and the second blower are operated. According to the pollution of the indoor air, the ventilation can be performed efficiently. In addition, when the air pollution degree is lowered, either one of the first blowing device and the second blowing device can be stopped, so that the running cost can be reduced.

In the invention described in claim 5, the second blower is configured to connect the second blower and the discharge side of the second blower with the space in the indoor unit, and at the same time connect the suction side of the second blower to the second blower tube. Since the air supply switching position and the suction side of the second blower are connected to the space in the indoor unit, the second air passage switching means for switching the discharge side of the second blower to the exhaust switching position for connecting to the second vent pipe is provided. Double air supply operation using both of the first and second blower devices as air supply operation can also be performed.

Claims (5)

In an air conditioner in which a refrigerant pipe from an indoor unit is led to the outdoors through a hole in a building, and connected to an outdoor unit, A first vent pipe and a second vent pipe inserted into a hole of the building; A first blower comprising a fan and a motor, the first blower being disposed in the indoor unit and connected to the first blower; A second blower comprising a fan and a motor separate from the first blower is provided, and is disposed in the indoor unit and connected to the second vent pipe to suck air in the room and intervene with the second vent pipe. A second blowing device having an exhaust function for exhausting air; And control means for controlling the first blower and the second blower, The first blowing device and the second blowing device are disposed to be in a vertical relationship with one side in the indoor unit, and at least the first blowing device is located at an air supply switching position for air supply operation and an exhaust switching position for exhaust operation. The wind path switching means for switching the wind path, The control means stops the first air blower if there is a single exhaust instruction, exhausts the second air blower, performs ventilation operation only for exhaust, and, if there is an air supply / exhaust operation instruction, the first blower. The blower is operated, the second blower is exhausted, the ventilation operation by the simultaneous air supply and exhaust is performed, and if a double exhaust instruction is given, the wind path switching means of the first blower is switched to the exhaust switching position. By operating the first blower and exhausting the second blower. delete delete The method of claim 1, The indoor unit is provided with an air pollution sensor that detects air pollution, and the control means is operated independently of the first blower or the second blower when the detection value of the air pollution sensor increases, if an automatic ventilation instruction is given. The air conditioner characterized by double operation of both a 1st air blower and a 2nd air blower. delete

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