CN1277078C - Ventilators and air conditioners - Google Patents

Abstract

The invention provides a ventilation device and an air conditioner thereof. The ventilation device, which is included in the air conditioner (1), is characterized in that it includes: a conversion device (90), which is used to convert the air supply from the outdoor to the indoor and the exhaust air from the indoor to the outdoor; the pollution sensor (101 ), for detecting the indoor air pollution degree; and the control part (100), when the operation mode is automatic operation, when the indoor air pollution degree detected by the pollution sensor exceeds a second allowable value, control the switching A device (90) is used to perform the exhaust, and when the pollution degree is lower than a second allowable value, the conversion device (90) is controlled to perform the air supply.

Description

Ventilators and air conditioners

technical field

The present invention relates to a ventilation device included in an air conditioner and an air conditioner, in particular, relates to a ventilation device and an air conditioner having an air passage connecting indoors and outdoors and a blower.

Background technique

Recently, an air conditioner having a humidifying part that absorbs moisture from the outdoor air and delivers it indoors is being marketed.

Such a humidifying unit has, for example, the structure disclosed in JP-A-2001-41511, and uses a humidifying rotor made of zeolite or the like to humidify the air blown into the room by a blower. Specifically, on the one hand, the moisture in the air is adsorbed on the humidification rotor, and at the same time, on the other hand, the heater is used to separate the moisture from the humidification rotor, and then the separated moisture is mixed into the room. Humidifies the air sent to the room.

In this way, since humidified air can be supplied to the room in the air conditioner having a humidifying unit, even in seasons such as winter when the air is dry, the room can be kept at a relative humidity that is beneficial to the body and mind. In addition, since the above-mentioned humidifying means has a blower, it has the function of supplying the air sucked from the outside to the room, and when humidification is not needed, it can also use its function of supplying the outside air to the room for ventilation.

Like this, after this outdoor air is humidified (or not humidified), the humidifying part supplied to the room with a blower fan has just possessed the above-mentioned ventilation function. Because, generally speaking, the cleanliness of the outdoor air is higher than that of the indoor air, so the cleanliness of the indoor air can be improved by sending the outdoor air into the room with the help of the blower of the humidification unit to ventilate the room.

However, when the air in the room is seriously polluted by smoking, it takes a long time to discharge the polluted air from all corners of the room in the above-mentioned ventilation method of sending outdoor air into the room.

For this reason, in addition to the air conditioner, in order to effectively discharge the air polluted by smoking, etc. to the outside, it is considered to install an additional ventilation fan. The new installation in the room is not usually considered in advance, and it is different from the air conditioner. A high-quality ventilation fan requires a large amount of engineering costs and other installation costs.

Contents of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ventilator included in an air conditioner and an air conditioner capable of sending outdoor air into the room and efficiently exhausting the indoor air to the outside.

The ventilator in the first aspect of the present invention is a ventilator included in an air conditioner, which has a switching device, a contamination sensor, and a control section. The conversion device converts the air supply from the outdoor to the indoor and the exhaust air from the indoor to the outdoor. The pollution sensor detects the level of indoor air pollution. When the operation mode of the control part is automatic operation, when the pollution degree of the indoor air detected by the pollution sensor exceeds the second allowable value, the control conversion device enables the exhaust to proceed, and when the pollution degree is lower than the second allowable value, the control unit The conversion device makes the air supply work.

The ventilation device of the second aspect of the present invention is based on the ventilation device described in the first aspect. When the operation mode is automatic operation, when the pollution degree is further lower than the first allowable value smaller than the second allowable value, the control Part of the exhaust and air supply are not carried out.

The ventilation device of the third aspect of the present invention is based on the ventilation device described in the first aspect or the second aspect. As an operation mode, in addition to the automatic operation mode, the air supply operation mode that enables the air supply to be carried out can also be directly selected. And the exhaust air operation mode that makes the exhaust air flow.

The ventilation device of the fourth aspect of the present invention is based on the ventilation device described in any one of the first aspect to the third aspect, and further includes an air channel connecting the indoor and outdoor; and has an air suction part and an air discharge part The air blower and the ventilator switch between the first state in which the air discharge part communicates with the air passage and the second state in which the air suction part communicates with the air passage, thereby switching between air supply and exhaust. The control section changes the output of the air blower during air supply and exhaust.

The ventilation device according to the fifth aspect of the present invention is based on the ventilation device described in the fourth aspect, and the switching device can also switch the third state of closing the air channel.

The conversion device according to the sixth aspect of the present invention is based on the ventilation device according to the fourth aspect or the fifth aspect, and the blower and the conversion device are arranged outdoors.

An air conditioner according to a seventh aspect of the present invention includes the ventilator, an indoor unit, and an outdoor unit according to any one of the first to sixth aspects.

An air conditioner according to an eighth aspect of the present invention is based on the air conditioner according to the fourth aspect, further comprising a temperature adjustment unit for adjusting the temperature of the indoor air, and switching the first state and the second state by controlling the switching device, Therefore, the air supply and the exhaust air are switched, and when the air is exhausted, the temperature adjustment effect of the temperature adjustment part on the indoor air is strengthened.

Description of drawings

Figure 1 is a perspective view of the appearance of an air conditioner according to an embodiment of the present invention;

Fig. 2 is a diagram showing a refrigerant circuit and air flow;

Fig. 3 is a disassembled perspective view of a conventional outdoor unit;

Fig. 4 is a perspective view of the humidifying fan and the conversion baffle of the humidifying component when they are in the first state;

Fig. 5 is a longitudinal sectional view of the first state near the humidifying fan and the conversion baffle of the humidifying unit;

Fig. 6 is the control block diagram of air conditioner;

Fig. 7 is a perspective view of the humidifying fan and the switching baffle of the humidifying component when they are in the second state;

Fig. 8 is a vertical sectional view of the humidification unit in the second state near the humidification fan and the conversion baffle;

Fig. 9 is a vertical sectional view of the humidification unit in the third state near the humidification fan and the switching baffle according to another embodiment.

Detailed ways

<General configuration of air conditioner>

The appearance of the air conditioner including ventilation in one embodiment of the present invention is shown in Figure 1.

Such an air conditioner 1 is composed of an indoor unit 2 installed on an indoor wall, and an outdoor unit 3 installed outdoors. The outdoor unit 3 has an outdoor air-conditioning unit 5 and a humidifying unit 4, and an outdoor heat exchanger, an outdoor fan, and the like are installed in the outdoor air-conditioning unit 5 . An indoor heat exchanger is installed inside the indoor unit 2, and an outdoor heat exchanger is installed inside the outdoor unit 3. Also, the heat exchangers and the refrigerant pipes 6 connected to these heat exchangers constitute a refrigerant circuit. In addition, between the humidifying unit 4 and the indoor unit 2, an exhaust pipe 7 is provided. This exhaust duct 7 is used to supply air from the humidifying unit 4 to the indoor unit 2, or when the indoor air passes through the humidifying unit. 4 Exhaust to the outside.

<Composition of Refrigerant Circuit>

FIG. 2 is a system diagram of the refrigerant circuit used in the air conditioner 1 with the flow of air added.

An indoor heat exchanger 11 is provided inside the indoor unit 2 . This indoor heat exchanger 11 is composed of heat transfer tubes bent back and forth at both ends in its length direction, and many fins passing through the heat transfer tubes to exchange heat with the air it contacts.

In addition, the indoor unit 2 is further provided with a cross-flow fan 12 and an indoor fan motor 13 for driving the cross-flow fan 12 to rotate. The cross-flow fan 12 is formed in a cylindrical shape, and blades are provided on the outer peripheral surface along the direction of the rotation axis to generate air flow in a direction intersecting the rotation axis. The cross-flow fan 12 sucks the indoor air into the indoor unit 2 and discharges the air after heat exchange with the indoor heat exchanger 11 into the room.

Be provided with in the outdoor air-conditioning part 5: compressor 21; The four-way reversing valve 22 that is connected on the discharge port of compressor 21; An outdoor heat exchanger 24 connected to the valve 22; and an electric valve 25 connected to the outdoor heat exchanger 24. The electric valve 25 is connected to the pipeline 31 through the filter 26 and the liquid stop valve 27 , and then connected to one end of the indoor heat exchanger 11 through the pipeline 31 . In addition, the four-way reversing valve 22 is connected to the pipeline 32 through the gas cut-off valve 28 , and then connected to the other end of the indoor heat exchanger 11 through the pipeline 32 . The pipes 31 and 32 described above correspond to the refrigerant pipe 6 in FIG. 1 .

Furthermore, inside the outdoor air-conditioning unit 5, there is provided a spiral fan 29 for exhausting the air heat-exchanged in the outdoor heat exchanger 24 to the outside. This helical fan 29 is driven to rotate by an outdoor fan motor 30 .

<Construction of Conventional Outdoor Units>

Before describing the configuration of the outdoor unit 3, a conventional outdoor unit before the present invention will be described using an exploded perspective view (FIG. 3).

The outdoor unit in the past is made of the outdoor air-conditioning part of the bottom and the humidifying part of the top, and has and has included bottom plate 41, right side plate 42, left side plate 43, front plate 44, protection barbed wire 46, top plate 47, humidifying part. An outdoor unit casing such as the casing 48 and the like.

[Structure of Outdoor Air Conditioning Parts]

At the rear of the front panel 44, a fan inlet 45 and a partition 49 are installed. In addition, the outdoor heat exchanger 24 having a substantially L-shape in planar view is attached to the front of the protective barbed wire 46 located at the rear of the outdoor unit casing.

In front of the outdoor heat exchanger 24, a fan motor bracket 50 for fixing the outdoor fan motor 30 is attached. The outdoor fan motor 30 is provided for driving the helical fan 29 . The effect of spiral fan 29 is to make negative pressure in the space formed by the bottom plate of fan air inlet 45, dividing plate 49, left side plate 43, outdoor heat exchanger 24 and humidifying component shell 48, let from outdoor The air introduced from the rear and left sides of the casing contacts with the outdoor heat exchanger 24 and is discharged to the front of the front plate 44 .

Between the partition plate 49 and the right side plate 42, compressor 21, four-way reversing valve 22, electric valve 25, liquid shut-off valve 27, gas shut-off valve 28, etc. are arranged to form various components of the refrigerant circuit, And detect the thermistor 51 etc. that each component temperature is used. On the right side of the right side plate 42, a shutoff valve cover 52 for protecting the liquid shutoff valve 27 and the gas shutoff valve 28 is mounted.

An electrical box 53 is installed above the spiral fan 29, and a printed circuit board 54 for controlling the circuit components used by each component is housed in the electrical box 53, and a circuit board 54 is installed for dissipating the heat generated in the circuit components. The cooling fin 55 that goes out.

[Structure of humidification unit]

The humidifier has a humidifier case 48 positioned above the outdoor unit. In the humidifying unit case 48, the right side is a space for accommodating the humidification rotor 58 and the like, and the left side is a space 75 for accommodating a suction fan 81 and the like. Inside this humidifying member case 48, a humidifying rotor 58, a heater assembly 64, a humidifying fan 70, a cover 74, an adsorption fan 81, and the like are arranged.

The humidifying rotor 58 is a ceramic rotor with a honeycomb structure having a substantially disk shape, and is structured so that air can easily pass through. Specifically, as shown in FIG. 3 , the rotor appears to have a circular shape on a plane, and there are many fine honeycomb shapes in a cross-sectional view cut with a horizontal plane. Furthermore, air passes through many cylindrical parts of the humidification rotor 58 whose cross section is polygonal.

The main part of the humidifying rotor 58 is fired with an adsorbent such as zeolite. Here, although zeolite is used, an adsorbent such as silica gel and alumina may also be used. Adsorbents such as zeolite have the property of being able to absorb moisture in the air they come into contact with, and then release the adsorbed moisture by heating.

Such a humidifying rotor 58 is rotatably supported by a support shaft 59 provided on the side of the humidifying unit case 48 via a rotor guide 60 . Many teeth are formed on the circumferential surface of the humidifying rotor 58 and mesh with teeth of a rotor driving gear 62 mounted on a driving shaft of a rotor driving motor 61 .

The heater assembly 64 is arranged to cover about half of the upper side (half on the right side) of the humidification rotor 58 . The heater assembly 64 is composed of a heater main body 66 , an upper cover 65 covering the heater main body 66 , and a lower cover 69 . An air inlet 67 for sucking in air and an air outlet 68 for discharging air heated by the heater body 66 to the side of the humidifying rotor 58 are formed on the lower cover 69 . Such a heater assembly 64 is installed above the humidification rotor 58 via a heater fixing plate 63 .

The humidification fan 70 is arranged at a position corresponding to the heater assembly 64 below the humidification rotor 58 . The humidifying fan 70 is a centrifugal fan arranged in a space communicating with the humidifying hose 73 (the space below the exhaust port 68 of the lower cover 69 of the heater assembly 64 ). After the humidifying fan 70 passes through the humidifying rotor 58, the air flowing downward from the roughly half of the right side of the humidifying rotor 58 (that is, the part below the exhaust port 68 of the lower cover 69 of the heater assembly 64) is sent to Go in the humidification hose 73. The humidification hose 73 is connected to the air supply and exhaust pipe 7 and supplies the air sent from the humidification fan 70 to the indoor unit 2 .

The cover member 74 covers a portion of the heater assembly 64 that is not positioned above the humidification rotor 58 (approximately the left half). The cover member 74 forms an air passage from the top of the left half of the humidifying rotor 58 to the upper part of the suction fan housing space 75 described below together with a suction socket 84 described below.

The adsorption fan 81 accommodated in the adsorption fan accommodation space 75 is a centrifugal fan driven to rotate by the adsorption fan motor 83, and the air is supplied from the opening portion 85 of the adsorption side socket 84 arranged on the upper part to the suction fan accommodation space 75. External (outside of the humidifier case 48 ) exhaust. The suction side socket 84 is provided on the upper portion of the suction fan accommodation space 75 and functions to guide the air entering through the air passage formed by the cover member 74 to the suction fan 81 . In addition, the suction fan motor 83 is fixed in the humidifying component casing 48 by the motor fixing frame 82 .

In addition, a power base plate 79 and an electrical box housing are arranged inside the humidifying component housing 48 . The electrical box case is constituted by an electrical box 76 and a cover 77 in which a printed circuit board 78 is accommodated.

<Structure of the outdoor unit 3 of the present embodiment>

Next, the outdoor unit 3 of the air conditioner of this embodiment will be described.

The outdoor unit 3 is composed of a lower outdoor air-conditioning unit 5 and an upper humidifying unit 4 . The configuration of the outdoor air-conditioning unit 5 is the same as that of the conventional outdoor air-conditioning unit described above. On the other hand, the humidifying unit 4 is configured by adding a conversion damper 90 to the humidifying unit of the above-mentioned conventional outdoor unit.

[Constitution and working process of conversion baffle plate 90]

The conversion baffle 90 is a rotary air passage conversion device arranged below the humidifying fan 70, and consists of a circular part 92 as shown in Figure 4, Figure 5, Figure 7 and Figure 8, and a motor that drives the circular part 92 to rotate. The baffle drive motor 91 (see FIG. 6) constitutes.

As shown in FIG. 4 , the circular member 92 is composed of a circular bottom plate 92 a , side walls 92 b , semi-conical side walls 92 c , an inner wall 92 d and an inner cylindrical wall 96 . Various walls 92b, 92c, 92d, 96 extend upwardly from the floor 92a. The side wall 92b is divided into two by the side opening 92e and the semi-conical side wall 92c. The inner wall 92d is composed of three plates extending radially from the vicinity of the center of the circular member 92, and divides the inside of the circular member 92 into three. The inside of the circular member 92 is divided into a first space 93, a second space 94, and a third space 95 by the above-mentioned inner wall 92d (see FIG. 4 ). The first space 93 does not have the side wall 92b, and is a space whose side is open due to the side opening 92e. On the bottom plate 92a of the second space 94 there are two round holes 94a, 94b. An inner cylindrical wall 96 disposed in the second space 94 extends upward from a peripheral portion of the circular hole 94b. The semi-conical side wall 92c is adjacent to the circular hole 94a, and its surface shape is similar to the shape obtained by dividing the lower pointed cone into two parts in the longitudinal direction. As shown in FIG. 7 and FIG. 8, the space enclosed by the outer surface of the semi-conical side wall 92c is a space with an open side. In addition, each of the spaces 93, 94, 95, the space surrounded by the outer surface of the semi-conical side wall 92c, and the space surrounded by the inner surface of the inner cylindrical wall 96 are open upward.

On the other hand, as shown in FIGS. 5 and 8, the humidifying fan 70 disposed on the circular member 92 has an impeller 70a, a suction port 70b, and an exhaust port 70c. Both the suction port 70b and the discharge port 70c are formed on the lower plane of the casing of the humidifying fan 70, facing the opening of the upper part of the circular member 92.

The shutter drive motor 91 is provided to drive the circular member 92 to rotate as shown in FIGS. 5 and 8 . A shutter driving motor 91 (not shown in FIGS. 5 and 8 ), for example, may be arranged below the circular member 92 . Above-mentioned baffle drive motor 91 drives circular member 92 to rotate, and circular member 92 is switched between two states: rotate to the first state on the rotational position shown in Figure 4 and Figure 5, and rotate to Figure 7 and The second state in the rotated position shown in FIG. 8 .

In the first state, the channel 89 (see FIG. 5 ), communicating with the first space 93 of the circular member 92 through the side opening 92e, guides the humidified air or outdoor air passing through the heater assembly 64 and the humidifying rotor 58 to the switching gear. Circular part 92 of plate 90 goes. In addition, in the first state, the first space 93 of the circular member 92 communicates with the suction port 70b of the humidification fan 70 through the upper opening. Also, in the first state, the inner cylindrical wall 96 of the circular member 92 communicates with the exhaust port 70c of the humidifying fan 70 with its upper part, and communicates with the hose connection part 3a connected to the humidified hose 73 with its lower part. Connect the exhaust port 70c of the humidifying fan 70 with the humidifying hose 73. Since the humidifying hose 73 is connected to the supply and exhaust pipe 7, the air discharged from the exhaust port 70c of the humidifying fan 70 is supplied to the indoor unit 2 through the supply and exhaust pipe 7 in the first state. In this way, in the first state, the air flows along the arrow direction shown by the dotted line in FIG. 4 and FIG.

On the other hand, in the second state, the hose connecting portion 3a connected to the humidifying hose 73 communicates with the second space 94 of the circular member 92 through the circular hole 94a. Moreover, the 2nd space 94 communicates with the suction port 70b of the humidification fan 70 through the opening of an upper part. Also, in the second state, the position of the exhaust port 70c of the humidifying fan 70 is above the semi-conical side wall 92c of the circular member 92, so the exhaust port 70c passes through the semi-conical side wall 92c surrounding the The space is connected with the channel 3b leading to the outside of the outdoor unit 3. Then, in the second state, the air flows along the arrow direction shown by the dotted line in FIGS. The exhaust port 70c is exhausted outside the machine.

In addition, as shown in FIG. 2 , the supply/exhaust pipe 7 is connected to the predetermined space 2 a of the indoor unit 2 . The predetermined space 2a is a space upstream of the indoor heat exchanger 11 where air flows, and is a space where air before heat exchange is stored. Therefore, the air supplied to the indoor unit 2 through the supply and exhaust duct 7 is exhausted into the room after being heat-exchanged by the indoor heat exchanger 11 together with the airflow inside the indoor unit 2 generated by the cross-flow fan 12 .

[Working process of the humidifying unit 4]

When the humidification operation is performed, the switching damper 90 is switched to the first state as shown in FIGS. 4 and 5 .

By driving the suction fan 81 to rotate, the humidifying unit 4 draws air from the outside into the humidifying unit housing 48 . The air entering the humidifying component housing 48 passes through the left half of the humidifying rotor 58, passes through the air passage formed by the cover member 74 and the suction side socket 84 and the suction fan 81, and flows from the side of the suction fan. The accommodation space 75 exits outwards. When the air sucked into the humidifying unit casing 48 from the outside passes through approximately half of the left side of the humidifying rotor 58, the humidifying rotor 58 absorbs moisture contained in the air.

The approximately half of the left side of the humidifying rotor 58 that has absorbed moisture in this adsorption process becomes approximately half of the right side of the humidifying rotor 58 due to the rotation of the humidifying rotor 58 . That is, the adsorbed moisture moves to the portion of the humidifying rotor 58 located below the heater assembly 64 as the humidifying rotor 58 rotates. Moisture that has moved to this location then exits the humidifying rotor into the air stream generated by the humidifying fan 70 due to the heat dissipated by the heater body 66 of the heater assembly 64 .

When the humidifying fan 70 is driven to rotate, the air is sucked into the humidifying component housing 48 from the outside, and this part of the air passes through the inner part of the left half of the humidifying rotor 58 and flows upwards, from the suction of the lower cover 69. The port 67 leads into the upper cover 65 . Then, the air entering the upper cover 65 is discharged from the exhaust port 68, and passes through the part close to it in the left half of the humidifying rotor 58 from top to bottom, then passes through the channel 89 and the conversion baffle 90, and reaches the humidifying fan. 70. This air flow is created by the humidifying fan 70 . The humidification fan 70 sends the air that flows through the humidification rotor 58 and the conversion baffle 90 in the above-mentioned manner to the indoor unit 2 through the humidification hose 73 and the supply and exhaust pipe 7 . The air sent to the indoor unit 2 contains moisture adsorbed on the humidifying rotor 58 .

The air supplied from the humidifying unit 4 to the indoor unit 2 in this way is discharged into the room through the indoor heat exchanger 11 from the predetermined space 2a.

<Configuration of Control Section 100 and Control Process thereof>

The control section 100 is provided in electrical boxes arranged in the indoor unit 2, the outdoor air conditioning unit 5, and the humidifying unit 4 of the air conditioner 1, respectively. As shown in Figure 5, this control part 100 is connected with various machines of the indoor unit 2 and the outdoor unit 3, and controls the various machines to perform corresponding heating operation according to the operating instructions sent from parts such as the remote controller 102, resulting in Various modes of operation such as cold operation, dry operation, humidification operation, air supply operation, exhaust operation, etc.

[humidification operation]

When the control unit 100 receives the humidification instruction from the remote controller 102 and judges that the humidification operation is necessary based on the automatic humidification operation instruction from the remote controller 102, it performs the humidification operation. Such a humidification operation is often performed together with a heating operation. During the humidification operation, the driving motor 61 for the inner rotor of the humidifying unit 4 , the heater main body 66 , the motor for driving the humidifying fan 70 , and the adsorption fan motor 83 are driven. As mentioned above, in this humidification operation, by means of the rotation of the adsorption fan 81, the moisture contained in the air introduced from the outside into the inside of the humidification unit 4 is adsorbed on the humidification rotor 58, and at the same time, by the rotation of the humidification fan 70, The air heated by the heater main body 66 passes through the humidification rotor 58 , and the air containing moisture detached from the humidification rotor 58 is supplied to the indoor unit 2 through the supply and exhaust pipe 7 .

[Ventilation by air supply operation or exhaust operation]

In addition, when it is judged that indoor ventilation is necessary, the control section 100 performs an air supply operation or an exhaust operation. The operation process of the air supply operation is to suck the outdoor air into the humidifying unit 4, and then supply the outdoor air to the indoor unit 2 from the supply and exhaust pipe 7. The operation process of the exhaust operation is that the humidifying fan 70 of the humidifying unit 4 sucks the air in the supply and exhaust pipe 7, that is, the indoor air is sucked into the supply and exhaust pipe 7 through the indoor unit 2, and then it is drawn from the air supply and exhaust pipe 7. The humidifying fan 70 is exhausted to the outside of the outdoor unit 3. The flow of air during the air supply operation and the exhaust operation is as described above in the description of the first state and the second state in the section [Constitution and Operation of the Switching Damper 90]. During air supply operation, the conversion baffle 90 is in the first state, the air flows along the arrow direction shown by the dotted line in Fig. 4 and Fig. 5, and the outdoor air is supplied to the indoor unit 2 through the supply and exhaust pipe 7. gas. On the other hand, during the exhaust operation, the conversion damper 90 is in the second state, and the air flows along the arrow direction shown by the dotted line in Fig. The air in the duct 7 is exhausted from the exhaust port 70c of the humidification fan 70 to the outside of the machine. In addition, in the air supply operation and the exhaust operation, neither the suction fan 81 nor the rotor drive motor 61 of the humidification unit 4 operates, and only the humidification fan 70 rotates.

Whether it is necessary to carry out indoor ventilation, and whether to select air supply operation or exhaust operation, will be judged by the control part 100 according to the operation mode set by the remote controller 102 and the detection result of the pollution sensor 101 . The pollution sensor 101 is installed in the indoor unit 2 and detects the pollution of the indoor air.

When the operation mode is automatic operation, the control section 100 judges that indoor ventilation is necessary when the pollution level exceeds the first allowable value. Then, the control section 100 selects the air supply operation when the pollution degree exceeds the first allowable value and approaches the second allowable value, and selects the exhaust operation when the pollution degree exceeds the second allowable value. In addition, the user of the air conditioner 1 may directly select the air supply operation mode or the exhaust operation mode by using the remote controller 102 . For example, when the room is full of smoke due to smoking and the air conditioner 1 is to be used as a ventilation fan, it is desirable to directly select the exhaust operation. In addition, when it is necessary to take in fresh outdoor air for slow ventilation while performing air conditioning, air supply operation can be selected.

In addition, the output of the humidifying fan 70 during the exhaust operation is controlled to be larger than the output during the air supply operation. In addition, during the exhaust operation, the control section 100 controls the frequency converter of the compressor 21 to increase its frequency, so that the motor speed of the compressor 21 increases.

<characteristic of air conditioner 1>

(1)

In the air conditioner 1, by switching the conversion baffle 90 inside the humidifying unit 4 to the first state and the second state, it is possible to send the outdoor air into the room through the supply and exhaust pipe 7 (air passage). Air supply operation, or carry out the exhaust operation that the air in the room is exhausted to the outside through the supply and exhaust pipe 7 . In this way, for the operation aimed at ventilation, either the air supply operation or the exhaust operation can be selected.

(2)

In the air conditioner 1, a humidifying fan 70 and a switching damper 90 capable of performing various operations such as a humidifying operation, an air supply operation, and an exhaust operation are installed inside the humidifying unit 4 outside. Therefore, the noise generated in these components hardly causes discomfort to the occupants of the room.

(3)

In the air conditioner 1, the output power of the humidifying fan 70 during the exhaust operation is controlled to be larger than the power during the air supply operation, so when it is desired to quickly ventilate the room, an exhaust fan with a very good ventilation effect can be selected. Gas runs. On the other hand, when the air supply operation using the ventilation method of sending fresh air from the outside into the room is used, the humidifying fan 70 can be driven with a relatively small power.

(4)

In the air conditioner 1, the humidification fan 70 may be used during the air supply operation or the humidification fan 70 may be used during the humidification operation, as in the conventional case.

In addition, in the present invention, since the changeover damper 90 is newly provided in the humidifying unit 4, the humidifying fan 70 can also be used for exhaust operation for exhausting indoor air to the outside. It is possible to change the design of an air conditioner having a humidifying unit to a design capable of enhancing the ventilation function at such a low cost.

(5)

During the exhaust operation of the air conditioner 1, since the indoor air being conditioned is passed through the supply and exhaust pipe 7 and then discharged outdoors, the situation of adjusting the temperature of the indoor air may be aggravated. In view of this, in the air conditioner 1, the frequency converter of the compressor 21 is controlled to increase its frequency during exhaust operation. In this way, it is possible to prevent deterioration of the condition of adjusting the temperature of the air in the room when the air is exhausted, and avoid a sudden change in the temperature in the room.

(6)

In the air conditioner 1, when performing air supply operation for supplying outdoor air into the room, the outdoor air supplied into the room from the humidifying fan 70 of the humidifying unit 4 flows into the space specified by the indoor unit 2 through the supply and exhaust pipe 7. within 2a. Since the above-mentioned specified space 2a is the upstream space of air flow for the indoor heat exchanger 11, the outdoor air flowing into the specified space 2a can only be discharged into the room after passing through the indoor heat exchanger 11. Therefore, the variation in the temperature of the indoor air is much smaller than that in the case where the outdoor air is directly supplied into the room.

[Other embodiments]

(A)

As an optional state of the switching damper 90 , in addition to the above-mentioned first state and second state, a third state as shown in FIG. 9 is designed. In this third state, a part of the bottom plate 92 a of the circular member 92 blocks the upper opening of the hose joint portion 3 a connected to the humidifying hose 73 . Therefore, the state that the outdoor and the room are connected by the supply and exhaust pipe 7 and the humidifying hose 73 disappears due to the bottom plate 92a of the circular part 92, and the pipelines such as the supply and exhaust pipe 7 are not connected with the indoor and the indoor. Connected outside.

When the outdoor wind is very strong, and in other necessary situations, if the conversion baffle 90 can be switched to the third state by manual operation or automatic control, it can prevent air from flowing from outdoor to indoor according to people's wishes. .

(B)

In the above-mentioned embodiment, the pollution sensor 101 is provided in the indoor unit 2, but when the necessity of ventilation and the selection of the air supply operation and the exhaust operation are determined by the user, the pollution sensor 101 may be omitted. .

(C)

In the above-mentioned embodiment, the rotating type switching baffle 90 is used, but after the surrounding structure is modified, a sliding type switching baffle can also be used.

(D)

In the above-mentioned embodiment, the output power of the humidifying fan 70 during the exhaust operation is larger than that during the air supply operation. However, when the outdoor exhaust noise becomes a problem, it is also possible to use the humidifying fan 70 during the exhaust operation. The output power is smaller than that of the air supply operation.

The effect of the invention

In the ventilator of the present invention, the outdoor air can be sent into the room, and the indoor air can also be exhausted to the outside. In addition, it is possible to appropriately convert the air supply from the outside to the room and the exhaust from the room to the outside according to the pollution degree of the indoor air detected by the pollution sensor. When the pollution degree of the indoor air is relatively large due to smoking, etc. Exhaust air, when the indoor air pollution is not so serious, it is converted to blowing outdoor fresh air into the room.

Claims (8)

1. air interchanger, it is included in the air conditioner (1), it is characterized in that, comprising:

Conversion equipment (90) is used for being changed to outdoor air draft to indoor air-supply with by indoor by outdoor;

Contaminant sensor (101) is used for air pollution degree in the sensing chamber; And

Control section (100), when operational mode is operation automatically, when surpassing second feasible value by the detected room air pollution degree of described contaminant sensor, control described conversion equipment (90) to carry out described air draft, and when described pollution level is lower than second feasible value, control described conversion equipment (90) to carry out described air-supply.

2. air interchanger as claimed in claim 1, it is characterized in that, when operational mode is automatically operation, when described pollution level further low than second feasible value during little first feasible value, described control section (100) does not all carry out described air draft and described air-supply.

3. air interchanger as claimed in claim 1 or 2 is characterized in that, as operational mode, except that described automatic operational mode, can also directly select to make air-supply operational mode that described air-supply carries out and the air draft operational mode that described air draft is carried out.

4. as any one the described air interchanger among the claim 1-3, it is characterized in that, also comprise:

Interior and the outdoor air duct (7,73) of junction chamber; And

Pressure fan (70) with air suction portion (70b) and air discharge portion (70c),

Described air interchanger (90) is by to making described air discharge portion (70c) be communicated with first state of described air duct (73), change with second state that makes described air suction portion (70b) be communicated with described air duct (73), thereby described air-supply and described air draft are changed.

Described control section (100) changes the output of institute's conveying fan (70) when described air-supply and in described air draft the time.

5. air interchanger as claimed in claim 4 is characterized in that,

Described conversion equipment (90) can also be transformed into the third state of cutting out described air duct (7,73).

6. as claim 4 or 5 described air interchangers, it is characterized in that,

Described pressure fan (70) and described conversion equipment (90) are arranged on outdoor.

7. an air conditioner (1) is characterized in that,

Have any one described air interchanger, indoor set (2) and off-premises station (3) in the claim 1 to 6.

8. air conditioner as claimed in claim 7 (1) is characterized in that, also has the temperature adjustment part (21) of the temperature adjustment of carrying out room air,

By controlling described conversion equipment (90) described first state and second state are changed, thereby described air-supply and described air draft are changed, and, when described exhaust, strengthen by the temperature corrective action of described temperature adjustment part (21) to room air.

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