JP2001012774A - Apparatus for humidification-ventilation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for humidification-ventilation capable of controlling humidification or dehumidification amount constantly or optionally. SOLUTION: A first temperature sensor 56 for detecting an air temperature in a downstream of a heat exchanger 9 is provided in the proximity to the heat exchanger 9 provided on an upstream of a moisture permeation membrane humidifier 8. In the case of humidifying, a frequency of an inverter 53 is varied by a control part 55 so that a specified, control target temperature agrees with a detection temperature of the first temperature sensor 56. Capacity of a compressor 51 is varied by the inverter 53. As a result, the air temperature from the heat exchanger 9 becomes constant and humidification amount by the humidifier 8 becomes also constant regardless of the effect of the outdoor temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidity control ventilator which is suitably used for a so-called highly airtight and highly heat-insulated house and performs ventilation while performing humidity control.

[0002]

2. Description of the Related Art FIG. 8 is a plan view of a conventional humidity control ventilator 31, FIG. 9 is a side view of the humidity control ventilator 31, and FIG. 10 is a perspective view of the humidity control ventilator 31.

The humidity control ventilator 31 has a relatively flat rectangular parallelepiped casing 32. Of a pair of side portions 32a and 32b opposed to each other in the longitudinal direction of the casing 32, one side portion 32a has a chamber. Inside outlet 33 and indoor side inlet 34
Are formed on the other side portion 32b, and an outdoor-side suction port 35 and an outdoor-side outlet 36 are formed. A sensible heat exchanger 37 is disposed inside the casing 32 at a substantially central portion in the longitudinal direction. The sensible heat exchanger 37 has an air supply SA
The exchange of moisture is not performed between the exhaust gas EA and the exhaust EA, but only the heat exchange of sensible heat is performed.

[0004] The sensible heat exchanger 37 is formed in a substantially square prism shape, and has four side surfaces 3 serving as air inlets or outlets.
7 a, 37 b, 37 c, and 37 d are arranged to extend in the width direction of the casing 32 in a posture inclined with respect to the upper surface and the bottom surface of the casing 32. And the sensible heat exchanger 37
The casing 32 is divided into four spaces 38a, 38b, 38c, and 38d by providing predetermined partitions between the four side portions of the casing 32 and the inner wall of the casing 32.

[0005] Two spaces 38a, 3 formed on the indoor side
8b, the space 38a communicating with the side surface 37a located above the indoor side of the sensible heat exchanger 37 is the indoor side suction port 34.
Is in communication with Therefore, this space 38a serves as an indoor air suction passage, and the side surface 37a of the sensible heat exchanger 37 serves as a suction port. The space 38b communicating with the side surface 37b located below the indoor side of the sensible heat exchanger 37 is
Is in communication with Therefore, the space 38b serves as an air supply passage, and the side surface 37b of the sensible heat exchanger 37 serves as an outlet.

On the other hand, two spaces 38 formed outside the room
Among 38c and 38d, a space 38c communicating with a side surface 37c located below the outdoor side of the sensible heat exchanger 37 communicates with the outdoor side outlet 36. Therefore, the space 38c serves as an exhaust passage, and the side surface 37c of the sensible heat exchanger 37 serves as an outlet. Further, a space 38 d communicating with a side surface 37 d located above the outdoor side of the sensible heat exchanger 37 communicates with the outdoor side suction port 35. Therefore, the space 38d serves as an outside air suction passage, and the side surface 37d of the sensible heat exchanger 37 serves as a suction port.

Here, the four side surfaces 37 of the sensible heat exchanger 37
In a to 37d, opposing side surfaces communicate with each other. That is, the side surfaces 38a and 38c and the side surfaces 38b and 3
8d communicate with each other. Therefore, in the humidity control ventilator 31, between the outdoor-side suction port 35 and the indoor-side outlet 33, the outside air suction passage 38d and the air supply passage 38b communicate with each other via the sensible heat exchanger 37, and the air supply path. On the other hand, between the indoor side suction port 34 and the outdoor side outlet 36, the indoor air suction passage 38a and the exhaust passage 38d communicate with each other via the sensible heat exchanger 37 to form the exhaust path RE. I have.

In the air supply path RS, the outdoor air processing filter 39, the dehumidifier 40, the sensible heat exchanger 37, and the air supply fan 41 are arranged in this order from the outdoor air inlet 35 to the indoor air outlet 33. , A moisture permeable humidifier 42 is provided. In the exhaust path RE, a sensible heat exchanger 37 and an exhaust fan 43 are arranged in order from the indoor-side suction port 34 to the outdoor-side outlet 36.

In such a humidity control ventilator 31,
By driving the air supply fan 41, the outside air OA is sucked into the casing 32 from the outdoor-side suction port 35 and then supplied from the indoor-side outlet 33 through the air supply path RS.
A is supplied indoors. On the other hand, by driving the exhaust fan 43, the indoor air RA is
After being sucked into the casing 32 from the
The air is discharged from the outdoor air outlet 36 as exhaust air EA through the outdoor air through E. At this time, in the sensible heat exchanger 37, the outside air O
Only the sensible heat is exchanged between A and the room air RA.
This is a heat exchange ventilation operation.

The humidity control operation is performed by operating the dehumidifier 40 and the moisture permeable humidifier 42 while performing the heat exchange ventilation operation. For example, in the dehumidifying heat exchange ventilation operation, after the outside air OA is cooled and dehumidified by the dehumidifier 40, it is heated to about room temperature by the sensible heat exchanger 37 (using the exhaust heat of the exhaust EA to be exhausted).
Then, the air is supplied indoors as air supply SA. In the humidification heat exchange ventilation operation, after the outside air OA is warmed by the sensible heat exchanger 37, it is humidified by the moisture permeable membrane humidifier 42 and then supplied to the room as air supply SA.

[0011]

The humidification in the prior art is a system in which the outside air OA is passed through the moisture permeable humidifier 42 and humidified by the evaporation of water, so that the humidification amount depends on the outside air temperature. There was a problem that the humidification amount could not be controlled irrespective of the outside air temperature. In addition, during the dehumidifying operation, the temperature of the dehumidifier 40 as a heat exchanger is also affected by the outside air temperature, and there is a problem that the amount of dehumidification cannot be arbitrarily controlled.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and has as its object to control the humidification amount and the dehumidification amount to predetermined values or to change the target control amount. It is an object of the present invention to provide a humidifying and ventilating device.

[0013]

Therefore, a humidity control ventilator according to a first aspect of the present invention includes a humidifier 8 configured to apply moisture to the outside air supplied to a room through a moisture permeable membrane. A heat exchanger 9 disposed upstream of the humidifier 8;
And a control means for controlling the temperature of the heat exchanger 9 so that the humidification amount at the time becomes a predetermined value.

In the humidity control ventilator of the first aspect, the heat exchanger 9
Is controlled so that the humidification amount in the humidifier 8 becomes a predetermined value, the humidification amount in the humidifier 8 is maintained at a predetermined value without being affected by the outside air temperature. be able to.

In the humidity control ventilator according to the second aspect, a temperature sensor 56 is disposed downstream of the heat exchanger 9, and the output of the temperature sensor 56 controls the air temperature downstream of the heat exchanger 9 by the control means. Is controlled to be a predetermined value.

In the humidity control ventilator according to the second aspect, the heat exchanger 9
The air temperature downstream of the humidifier 8 is controlled to be constant.
The temperature of the air sent to the humidifier 8 is constant, so that the humidification amount in the humidifier 8 can be maintained at a predetermined value without being affected by the outside air temperature.

According to a third aspect of the present invention, there is provided a humidity control ventilator including a temperature sensor 57 for detecting the temperature of the heat exchanger 9, wherein the temperature of the heat exchanger 9 is controlled by the control means based on the output of the temperature sensor 57. It is characterized in that it is controlled to be a value.

In the humidity control ventilating apparatus according to the third aspect, the heat exchanger 9
, The humidification amount in the humidifier 8 can be maintained at a predetermined value without being affected by the outside air temperature, and the control configuration can be simplified.

A fourth aspect of the invention is characterized in that the heat exchanger 9 functions as an evaporator and controls the dehumidification amount to a predetermined value.

In the humidity control ventilating apparatus according to the fourth aspect, the heat exchanger 9
By functioning as an evaporator, the amount of dehumidification can be maintained at a predetermined value without being affected by the outside air temperature.

The humidity control ventilator according to claim 5 is characterized in that the control target temperature of the temperature sensors 56 and 57 can be changed, and the target control value of the humidification amount or the dehumidification amount can be changed.

According to the humidity control ventilator of the fifth aspect, the control target temperature to be compared with the temperature sensors 56 and 57 can be changed, so that the user can arbitrarily set the humidification amount or the dehumidification amount, and can meet the user's request. The humidity can be adjusted comfortably according to the situation.

In the humidity control ventilator according to a sixth aspect, the heat exchanger 9 functions as a condenser or an evaporator of a heat pump, and the control means controls the capacity of the compressor 51. It is characterized in that the temperature of the heat exchanger 9 is controlled.

In the humidity control ventilator of the sixth aspect, the capacity of the compressor 51 is controlled by changing the frequency of the inverter 53, or the capacity is controlled by controlling the capacity of the compressor 51. The temperature of the heat exchanger 9 and the air temperature downstream of the heat exchanger 9 can be controlled, whereby the humidification amount or the dehumidification amount can be controlled without being affected by the outside air temperature.

According to a seventh aspect of the present invention, there is provided a humidity control ventilating apparatus, comprising: an air supply path RS for circulating an air supply SA supplied from the outside to the room; an air supply fan 4 arranged in the air supply path RS; An exhaust path RE for passing the exhaust EA to be exhausted, an exhaust fan 5 arranged in the exhaust path RE, and an air supply SA flowing in the air supply path RS and an exhaust EA flowing in the exhaust path RE. A sensible heat exchanger 7 for performing heat exchange, wherein the humidifier 8 is interposed in the air supply path RS.

The humidity control ventilator according to claim 7 is applied to a humidity control ventilator provided with the sensible heat exchanger 7, but it is particularly preferable to implement in this way.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the humidity control ventilator of the present invention will be described in detail with reference to the drawings. FIG. 5 is a transparent side view showing the configuration of the humidity control ventilator 1 according to one embodiment of the present invention, FIG. 6 is a transparent plan view showing the configuration of the humidity control ventilator 1, and FIG. It is a perspective view which shows the external appearance of the humidity ventilation apparatus 1.

The humidity control ventilator 1 is configured by connecting a fan unit 2 and a humidity control unit 3. The fan unit 2 houses an air supply fan 4 and an exhaust fan 5 as components required for ventilation, and also houses electrical components 6 and the like necessary for electrical control of the entire humidity control ventilator 1. on the other hand,
The humidity control unit 3 houses a sensible heat exchanger 7, a moisture-permeable membrane humidifier 8, a heat exchanger 9, and the like as components required for humidity control. And the fan unit 2 and the humidity control unit 3
They are connected by connecting means 24, 24 arranged on the outer periphery of the connecting portion.

The humidity control ventilator 1 has installation plates 10, 11 attached to the upper surfaces of the units 2, 3, respectively.
(Refer to FIG. 7). Also, of the two side surfaces located in the width direction of the humidity control ventilator 1, one side surface 1a hatched in FIG. 7 is a so-called maintenance surface, and this maintenance surface 1a
, A plurality of maintenance covers are detachably provided. The maintenance cover is removed during the maintenance work of the above-mentioned storage components.

Next, the configuration of each of the units 2 and 3 will be described. The fan unit 2 has an indoor-side suction port 13 and an indoor-side air outlet 1 on the side opposite to the connection with the humidity control unit 3.
4 and two fan storage chambers 2a horizontally arranged in the casing 2c by the partition 12 in the horizontal direction.
2b. The one fan storage chamber 2a stores the air supply fan 4 such as a sirocco fan and communicates with the indoor side outlet 14, while the connection side is formed in the casing 2c so as to communicate with the humidity control unit 3. Communicating with an opening (not shown). The other fan storage chamber 2b houses the exhaust fan 5 such as a sirocco fan and communicates with the indoor suction port 13 while the connection side is formed in the casing 2c so as to communicate with the humidity control unit 3. Communicating with the opening (not shown).

Here, the supply fan 4 and the exhaust fan 5
The drive motors 4a, 5a are arranged so as to be located on the partition 12 side. Further, by disposing the two fans 4 and 5 vertically so as to overlap the drive motors 4a and 5a, the length in the width direction can be reduced. In the present embodiment, the air supply fan 4 is arranged on the upper side, and the exhaust fan 5 is arranged on the lower side. The electric component 6 is arranged below the air supply fan 4 arranged above. A plurality of attachment portions 15 to which the installation plate 10 is attached are formed in an upper portion of the fan unit 2.
In addition, the interior-side suction port 13 and the interior-side outlet 14 are connected to the interior by a duct (not shown).

On the other hand, the humidity control unit 3 has an outdoor air outlet 16 and an outdoor air inlet 17 on the side opposite to the connection with the fan unit 2. And the humidity control unit 3
Is divided into four spaces 3a, 3b, 3c and 3d by the sensible heat exchanger 7 and a plurality of partitions. The sensible heat exchanger 7 does not exchange moisture between the supply air SA and the exhaust EA, but performs only sensible heat exchange. The sensible heat exchanger 7 is formed in a substantially square prism shape, and has four side surfaces 7 serving as air inlets or outlets.
a, 7b, 7c, and 7d are arranged in the width direction at substantially the center of the humidity control unit 3 in a posture inclined with respect to the top and bottom surfaces of the humidity control unit 3. By providing a predetermined partition between the four side portions of the sensible heat exchanger 7 and the inner wall of the humidity control unit 3, the four spaces 3a to 3d are provided.
3d is formed.

The role of the four spaces 3a to 3d will be described below. First, the space 3a formed in the upper part on the indoor side
Communicates with a side surface 7a located above the indoor side of the sensible heat exchanger 7 and has a connecting portion communicating with an opening (not shown) formed in the casing 3e so as to communicate with the fan unit 2. ing. The opening and the opening through which the exhaust fan storage chamber 2b communicates are opposed to each other, whereby the space 3a communicates with the exhaust fan storage chamber 2b of the fan unit 2. Therefore, the space 3a serves as an indoor air suction passage, and the side surface 7a of the sensible heat exchanger 7 serves as a suction port.

A space 3 formed in the lower part on the indoor side.
b is a side surface 7 b located below the indoor side of the sensible heat exchanger 7.
And the connecting portion side communicates with an opening (not shown) formed in the casing 3 e so as to communicate with the fan unit 2. The opening and the opening through which the air supply fan storage chamber 2a communicates are opposed to each other, whereby the space 3b communicates with the air supply fan storage chamber 2a of the fan unit 2. Therefore, the space 3b serves as an air supply passage, and the side surface 7b of the sensible heat exchanger 7 serves as an outlet.

On the other hand, the space 3 formed in the lower part on the outdoor side
c is a side surface 7c located below the outdoor side of the sensible heat exchanger 7
And the outside air outlet 16. Therefore, the space 3c serves as an exhaust passage, and the side surface 7c of the sensible heat exchanger 7 serves as an outlet. The space 3d formed in the upper portion on the outdoor side communicates with the side surface 7d located on the upper side of the outdoor side of the sensible heat exchanger 7 and also communicates with the outdoor side inlet 17. Therefore, the space 3d serves as an outside air suction passage, and the side surface 7d of the sensible heat exchanger 7 serves as a suction port.

Here, the four side surfaces 7a to 7c of the sensible heat exchanger 7
In 7d, opposing side surfaces communicate with each other via an air passage (not shown). That is, the side surfaces 7a and 7c and the side surfaces 7b and 7d are both in communication. Therefore, in the humidity control ventilator 1, the outside air suction passage 3d, the air supply passage 3b, and the air supply fan storage chamber 2a communicate in this order via the sensible heat exchanger 7 to form the air supply passage RS. Similarly, through the sensible heat exchanger 7, the exhaust fan storage chamber 2b, the indoor air suction passage 3a, and the exhaust passage 3c communicate in this order to form an exhaust passage RE.

That is, the outside air OA is sucked in from the outdoor side suction port 17 by driving the air supply fan 4 and then passes through the air supply path RS and enters the room from the indoor side outlet 14 as air supply SA. Supplied. On the other hand, the indoor air RA is
By driving the exhaust fan 5, the indoor suction port 1 is
After the air is sucked in from the air outlet 3, the air is exhausted from the outdoor air outlet 16 to the outside as the exhaust air EA through the exhaust path RE.
The outside air outlet 16 and the outside air inlet 17 are connected to the outside by a duct (not shown).

A heat exchanger 9 is disposed in the outside air suction passage 3d. An outside air treatment filter for removing foreign substances such as dust and pollen is provided between the heat exchanger 9 and the outdoor side suction port 17. 18 are arranged. Further, a moisture permeable humidifier 8 is arranged in the air supply passage 3b, and a water supply tank 20 is arranged in the vicinity thereof. Therefore, in the air supply path RS, the external air filter 18, the heat exchanger 9, the sensible heat exchanger 7, the humidifier 8, and the air supply fan 4 are arranged in this order from the upstream side along the flow of the outdoor air OA (air supply SA). Are located.

As shown in FIG. 1, the heat exchanger 9 is connected to a compressor 51 in an outdoor unit installed outdoors through a connecting pipe, and serves as an evaporator (dehumidifier) of a refrigerant circuit during a cooling operation. It functions as a condenser during the heating operation. The distal end of the refrigerant pipe (the gas pipe 25 and the liquid pipe 26) of the heat exchanger 9 is guided to a connection space 19 formed in the exhaust passage 3c. This connection part storage space 19 is installed below the side surface (maintenance surface 1a) of the humidity control unit 3, and is covered by a removable cover.

The moisture permeable membrane type humidifier 8 is constituted by arranging a plurality of moisture permeable membrane pipes vertically and horizontally so as to be parallel to each other and arranging humidifying water around the moisture permeable membrane pipe. This is to impart moisture to the air passing through the pipe. The water supply tank 20 stores tap water supplied from a water supply pipe 21 connected to a water pipe, and supplies the stored tap water to the moisture permeable humidifier 8 as humidified water using a height difference. is there.

An air filter 22 is disposed in the indoor air suction passage 3a so as to cover almost the entire side surface 7a of the sensible heat exchanger 7. The air filter 22 is for removing foreign matter such as dust in the room.

The above-mentioned sensible heat exchanger 7, moisture permeable humidifier 8, and heat exchanger 9 use water or generate (condensate) water during operation, that is, a so-called heat exchanger. It is a plumbing part. Therefore, a drain pan (not shown) is arranged on the entire bottom of the humidity control unit 3 to store condensed water and excess humidified water. The drain water stored in the drain pan is drained outside through a drain outlet 23 through a drain hose (not shown). Also,
At the upper part of the humidity control unit 3, a plurality of attachment portions 15 to which the installation plate 11 is attached are formed.

Here, as shown in FIG. 1, a refrigerant circuit is formed by the heat exchanger 9, the compressor 51, the electric expansion valve 52, the non-use side heat exchanger 58 and the like in the humidity control ventilator 1. By changing the flow direction of the refrigerant in the refrigerant circuit by a four-way switching valve (not shown), the refrigerant circuit is operated for cooling, and the heat exchanger 9 has a function as a dehumidifier to dehumidify the supply air SA. Or,
By performing the heating operation of the refrigerant circuit, the heat exchanger 9 is provided with a function as a condenser, and the air passing through the moisture permeable membrane humidifier 8 is heated to increase the humidification amount in the moisture permeable membrane humidifier 8. Like that. Since the configuration of the refrigerant circuit itself is well known, the description thereof is omitted.

The compressor 51 is controlled by an inverter 53 via a motor 54, and the compression capacity can be varied by varying the frequency of the inverter 53. The inverter 53 and the electric expansion valve 52 are controlled by a control unit 55 including a microcomputer or the like. A first temperature sensor 5 for detecting the temperature of the air coming out of the heat exchanger 9 is provided downstream of the heat exchanger 9.
6 is provided, and the heat exchanger 9 itself is
A second temperature sensor 57 for detecting the temperature of the second sensor is provided. The detected temperature of the first temperature sensor 56 or the second temperature sensor 57 is fed back to the control unit 55 to control the inverter 53 or the electric expansion valve 52 so that the humidification amount or the dehumidification amount is kept constant or arbitrarily. I try to control.

In the present embodiment, when the humidification amount, the dehumidification amount, and the like are controlled, the control is performed by the user operating the remote controller 61. A signal from the remote controller 61 is received by a receiving unit (not shown) disposed on a wall or the like, and the received signal is input to the control unit 55 via indoor wiring.

FIG. 2 shows an operation section of the remote controller 61.
A humidity control switch 62 for turning on / off humidity control by the humidity control ventilator 1, an operation mode switch 64 for switching between dehumidification and humidification of ventilation air, and humidification by the operation mode switch 64 When performing, the humidification amount is increased, or the humidification amount change switch 65 for setting whether to be medium, small, or stopped, similarly, the dehumidification amount is increased,
Alternatively, the dehumidification amount change switch 66 for setting whether to be medium, small, or stopped, and furthermore, the heat exchanger 9 itself or the downstream temperature can be set in order to increase or decrease the humidification amount or the dehumidification amount according to the user's request. It comprises a temperature setting switch 67 and the like. Each of the switches 62 to
Signals from 67 are sent to the control unit 55 shown in FIG. 1, and based on these signals, the humidity control ventilator 1, a four-way switching valve (not shown) for switching the refrigerant circuit, an inverter 53, an electric expansion valve 52, etc. Is controlled.

Next, the operation of the constant control of the humidification amount and the dehumidification amount or the operation of arbitrary control will be described with reference to FIGS. First, a method of controlling the humidification amount of the supply air SA to be constant is described.
The control when changing the frequency of the compressor 51 by feeding back the temperature of the compressor 51 will be described. Step S in FIG.
In 1, the user operates the remote controller 61 to send a humidification request signal. When humidification is performed in the moisture permeable membrane humidifier 8, the humidification amount can be kept constant by keeping the temperature passing through the moisture permeable membrane humidifier 8 constant.
Therefore, a target value (control target temperature) of the temperature of the heat exchanger 9 is set as shown in step S2, and the current heat exchanger 9 is set.
The own temperature detection signal (see step S3) is compared with the target value in step S4. If they match in step S4, the process returns to step S3. If they do not match, the process proceeds to step S5. For example, if the temperature detected by the second temperature sensor 57 is lower than the control target temperature, The controller 55 increases the frequency of the inverter 53 to increase the capacity of the compressor 51 (see step S6).
The heating capacity of the heat exchanger 9 is increased. That is, the heat exchanger 9
Raise the temperature of. On the other hand, when the temperature detected by the second temperature sensor 57 is higher, the frequency of the inverter 53 is reduced to lower the performance of the compressor 51. As described above, the output of the second temperature sensor 57 is fed back to the inverter 53 to change the frequency of the compressor 51, whereby the humidification amount can be controlled to be constant. The capacity control of the compressor 51 is performed by the compressor 51 having a constant compression capacity in addition to the frequency control by the inverter 53 as described above.
It can also be performed by control of a system in which a part of the refrigerant on the discharge side is bypassed to the suction side, that is, by capacity control.

The controller 55 controls the opening degree of the electric expansion valve 52 without changing the capacity of the compressor 51 like the change in the frequency of the inverter 53, thereby controlling the refrigerant circulation amount. By controlling the heating capacity of the heat exchanger 9, the humidification amount can also be controlled to be constant.

Further, based on the output of the first temperature sensor 56 disposed downstream of the heat exchanger 9, the humidification amount can be controlled to be constant by changing the frequency of the inverter 53 as described above.

FIG. 4 is a timing chart for humidification. FIG. 4 (a) shows a case where a request for humidification has been changed by a user, such as raising or lowering the humidification amount.
In this case, the user sets the temperature setting switch 6 shown in FIG.
By operating 7, a target value of temperature (control target temperature) corresponding to the operation is set (see step S2 in FIG. 3). As a result, the first temperature sensor 56 or the second
The temperature detection signal from the temperature sensor 57 is
Alternatively, feedback can be made to the electric expansion valve 52 to control the humidification amount to an arbitrary value and maintain the dehumidification amount constant in the same manner as described above.

FIG. 4B shows a frequency change in the operation of the compressor 51, and shows a case where the frequency of the compressor 51 decreases when the humidification amount becomes constant. Also,
FIG. 4C shows a case where the outside air temperature rises. When the outside air temperature rises, the temperature of the heat exchanger 9 also rises with the rise of the outside air temperature. Is reduced so that the frequency of the inverter 53 is reduced. Of course, in the case of the electric expansion valve 52, the same control is performed. That is, the air temperature downstream of the heat exchanger 9 or the temperature of the heat exchanger 9 itself is matched by the first temperature sensor 56 or the second temperature sensor 57 with the control target temperature shown in step S2 of FIG. Since the above is controlled,
The humidification amount or the dehumidification amount can be controlled to be constant without being affected by the outside air temperature. Further, the control target temperature can be changed without being affected by the outside air temperature, and the humidification amount and the dehumidification amount can be arbitrarily controlled.

In the above case, the refrigerant circuit is set to the heating operation to make the heat exchanger 9 function as a condenser, and the temperature signal from the heat exchanger 9 is fed back to keep the condensing temperature in the heat exchanger 9 constant. Thus, the humidification amount in the moisture permeable membrane type humidifier 8 is controlled to be constant, or is controlled to be an arbitrary humidification amount. On the contrary, the refrigerant circuit is operated in the cooling mode, the heat exchanger 9 functions as an evaporator, and the temperature signal from the heat exchanger 9 is fed back to keep the evaporation temperature constant in the heat exchanger 9 as well. Can be controlled to be constant or an arbitrary amount of dehumidification can be controlled. Also in this case, the first temperature detection of the temperature of the heat exchanger 9 is performed.
A signal from the temperature sensor 56 or the second temperature sensor 57 for detecting the temperature downstream of the heat exchanger 9 is fed back to the inverter 53 and the compressor 51 or the electric expansion valve 52 so that the dehumidification amount is influenced by the outside air temperature. It can be controlled constantly without receiving it. Further, the case where the dehumidification amount is adjusted according to the user's request can be performed in the same manner as above.

As described above, the humidification amount and the dehumidification amount can be controlled to be constant, and the constant humidification amount and the dehumidification amount can be maintained even when the environmental conditions such as the outside air temperature fluctuate. Further, the amount of dehumidification and the amount of humidification can be adjusted in response to a user's request.

The humidity control ventilator 1 having such a configuration can be operated in various operation modes according to the season (temperature, humidity, etc. of the outside air OA). Fresh air like spring and autumn
When A is comfortable, only the air supply fan 4 and the exhaust fan 5 are driven to perform the heat exchange ventilation mode. In this mode, neither the moisture permeable humidifier 8 nor the heat exchanger 9 functions. In the heat exchange ventilation mode, outdoor fresh air O
A is taken into the room through the outside air treatment filter 18 and the dirty indoor air RA is discharged to the outside, so that pollen and dust can be prevented from entering and the room can be filled with fresh air, so that the resident can be healthy. You can spend.

When the humidity of the outside air OA is high, such as during the rainy season, autumn rainy season, or summer, the heat exchanger 9 is provided with a cooling operation function in addition to the driving of the air supply fan 4 and the exhaust fan 5.
Perform the dehumidification heat exchange ventilation mode. In this mode, the outside air OA is cooled and dehumidified by the heat exchanger 9 while performing ventilation, and then heat is exchanged with the room air RA discharged from the sensible heat exchanger 7 to be supplied indoors. Therefore, during the rainy season and autumn rainy season when the outside air OA is at a suitable temperature,
Ventilation and dehumidification can be performed, and residents can spend comfortably without feeling cold.

In summer, when the temperature of the outside air OA is high, the humidity can be lowered and the temperature can be lowered to about room temperature, so that the occupants can spend comfortably without feeling the heat.

When both the temperature and the humidity of the outside air OA are low as in winter, in addition to driving the air supply fan 4 and the exhaust fan 5, the heat exchanger 9 is provided with a heating operation function and the humidifier 8 is operated. Operate and perform humidification heat exchange ventilation mode. In this mode, the outside air OA is arbitrarily heated in the heat exchanger 9 while being ventilated, and then humidified by the humidifier 8 and supplied to the room. Therefore, an indoor environment with an appropriate humidity can be realized, and the occupants can spend comfortably.

In the above embodiment, the case where the sensible heat exchanger 7 is applied to the humidity control ventilator 1 has been described. However, the present invention is applicable to an air conditioner having no sensible heat exchanger 7. Can be applied. In the above description, control is performed to detect the temperature of the heat exchanger 9 or the air downstream thereof and maintain the temperature constant. However, the humidity itself downstream of the humidifier 8 is detected and the detected value is maintained constant. The temperature of the heat exchanger 9 may be controlled so that

[0059]

As described above, according to the humidity control ventilator of the first aspect, the amount of humidification in the humidifier is controlled to a predetermined value by controlling the temperature of the heat exchanger. Further, the humidifier in the humidifier can be maintained at a predetermined value without being affected by the outside air temperature.

According to the second aspect of the present invention, since the temperature of the air downstream of the heat exchanger is controlled to be constant, the temperature of the air sent to the humidifier becomes constant. , Can be maintained at a predetermined value without being affected by the outside air temperature.

According to the humidity control ventilator of the third aspect, since the temperature of the heat exchanger is controlled to be constant, the humidification amount in the humidifier can be maintained at a predetermined value without being affected by the outside air temperature. It is possible and the control configuration can be simplified.

According to the humidity control ventilator of the fourth aspect, by making the heat exchanger function as an evaporator, the dehumidification amount can be maintained at a predetermined value without being affected by the outside air temperature.

According to the humidity control ventilator of the fifth aspect, since the control target temperature to be compared with the temperature sensor can be changed, the user can arbitrarily set the humidification amount or the dehumidification amount, and can respond to the user's request. Humidity can be adjusted comfortably.

According to the humidity control ventilator of the sixth aspect, the capacity of the compressor is controlled by changing the frequency of the inverter.
Alternatively, by controlling the capacity of the compressor by controlling its capacity, the temperature of the heat exchanger and the temperature of the air downstream of the heat exchanger can be controlled, whereby the amount of humidification or dehumidification can be controlled by the outside air temperature. Control can be performed without being affected.

According to the humidity control ventilator of the seventh aspect, the present invention is applied to a humidity control ventilator provided with a sensible heat exchanger.

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of various operation switches of a remote controller.

FIG. 3 is a flowchart in a case where a humidification amount and a dehumidification amount are controlled to be constant.

FIG. 4 is a timing chart of each unit during humidification.

FIG. 5 is a transparent side view of the humidity control ventilating apparatus according to one embodiment of the present invention.

FIG. 6 is a transparent plan view of the humidity control ventilator.

FIG. 7 is a perspective view of the humidity control ventilator.

FIG. 8 is a plan view of a conventional humidity control ventilator.

FIG. 9 is a side view of a conventional humidity control ventilator.

FIG. 10 is a perspective view of a conventional humidity control ventilator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Humidity control ventilator 2 Fan unit 3 Humidity control unit 4 Air supply fan 5 Exhaust fan 7 Sensible heat exchanger 8 Moisture permeable membrane type humidifier 9 Heat exchanger 51 Compressor 52 Electric expansion valve 53 Inverter 55 Control part 56 First Temperature sensor 57 2nd temperature sensor RS air supply path RE exhaust path OA outside air EA exhaust RA indoor air SA air supply

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazushi Takimoto F-term (reference) 3L055 AA01 BA01 DA05 at 1000 Oya, Okamotocho, Kusatsu-shi, Shiga Pref.

Claims (7)

[Claims] 1. A humidifier (8) configured to apply moisture to outside air supplied into a room through a moisture permeable membrane,
A heat exchanger (9) arranged upstream of the humidifier (8)
And a control means for controlling the temperature of the heat exchanger (9) so that the humidification amount in the humidifier (8) becomes a predetermined value. 2. A temperature sensor (56) is arranged downstream of the heat exchanger (9), and the output of the temperature sensor (56) allows the control means to control the air temperature downstream of the heat exchanger (9). The humidity control ventilator according to claim 1, wherein the control is performed so as to be a predetermined value. 3. A temperature sensor (57) for detecting the temperature of the heat exchanger (9) is arranged, and the temperature of the heat exchanger (9) is controlled by the control means by the output of the temperature sensor (57). The humidity control ventilator according to claim 1, wherein the control is performed so as to be a value. 4. The humidity control ventilator according to claim 1, wherein said heat exchanger (9) functions as an evaporator, and controls the dehumidification amount to a predetermined value. . 5. The control target temperature of the temperature sensors (56) and (57) can be changed so that a target control value of a humidification amount or a dehumidification amount can be changed. Any of the humidity control ventilators. 6. The heat exchanger (9) functions as a condenser or an evaporator of a heat pump, and the control means controls the capacity of the compressor (51), thereby controlling the heat exchanger. The humidity control ventilator according to any one of claims 1 to 5, wherein the temperature of (9) is controlled. 7. An air supply path (RS) for circulating air supply (SA) supplied from outside to indoors, and the air supply path (RS).
An exhaust fan (4) arranged in the exhaust path (RE), an exhaust fan (5) arranged in the exhaust path (RE),
A sensible heat exchanger (7) for exchanging heat between an air supply (SA) flowing through the air supply path (RS) and an exhaust gas (EA) flowing through the exhaust path (RE); The humidity control ventilator according to any one of claims 1 to 6, wherein a vessel (8) is interposed in the air supply path (RS).