JP2570038B2 - Total heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a total heat in which a dust removing unit having an electric dust collector and an additional unit having a humidifier or a deodorizer are selectively combined with a circulation unit and a heat exchange unit as basic units. The present invention relates to an exchange device, and more particularly to control of a circulation air flow rate of a circulation fan of a circulation unit.

[0002]

2. Description of the Related Art Generally, a total heat exchange apparatus includes a circulation fan and a heat exchanger, and performs ordinary ventilation and heat exchange ventilation. In addition, in recent years, there has been a demand for a total heat exchanger to have a dust removing, humidifying or deodorizing function. Therefore, in the conventional total heat exchange device, a circulation unit having a circulation fan,
With a heat exchange unit having a heat exchanger as a basic unit, a dust removing unit having an electric dust collector and an additional unit having a humidifier or a deodorizer are selectively combined.

[0003]

However, in a total heat exchanger in which a dust removing unit and an additional unit are selectively combined with the basic unit, any one of the dust removing unit and the additional unit is used for the basic unit. The circulating air volume of the circulating fan of the circulating unit when the unit is omitted, that is, the basic unit + the dust removing unit or the basic unit + the additional unit, is both the dust removing unit and the additional unit. The pressure loss is excessively large compared to the circulating air volume of the circulating fan in the case of a full component obtained by combining the above, that is, a basic unit + a dust removing unit + an additional unit. In addition, the driving noise became loud, giving the user discomfort.

Further, the dust removing unit and the additional unit are designed so that the capacity can be maximized in accordance with the circulating air volume of the circulating fan at the time of the full component, and the circulating air volume of the circulating fan becomes excessively large as compared with the full component. With the omitted unit, the capabilities of the dust removal unit and the additional unit could not be fully exhibited. Therefore, it has been difficult to set the air volume for the circulating fan at the time of designing the equipment in order to sufficiently exert the capabilities of the dust removing unit and the additional unit even when the unit is omitted.

[0005] In view of the above, an object of the present invention is to provide a total heat exchanger capable of easily setting an air volume for a circulation fan at the time of equipment design and reducing operating noise when a unit is omitted.

[0006]

The object of the present invention is to provide a dust removing unit having an electric precipitator, a circulating unit having a circulating fan, a heat exchanging unit having a heat exchanger as a basic unit, and a humidifying unit. In the total heat exchange device in which the additional unit having the vessel or the deodorizer is selectively combined, the circulating fan is a tap switching type so that the circulating air volume can be changed in multiple stages, and the dust removing unit and the additional unit are A control circuit is configured to output an initial code corresponding to each unit when the power is turned on, and to set switching of the tap of the circulation fan according to a combination state of the dust removal unit and the additional unit with respect to the basic unit when the power is turned on. The control circuit is based on each initial code of the dust removal unit and the additional unit. A unit combination discriminating means for detecting the connection of the dust unit and the additional unit, and discriminating whether or not the dust removing unit and the additional unit are a full component combined with the basic unit; and if the combination discriminating means is not the full component, And tap setting means for setting the tap of the circulating fan to a tap at a lower stage than at the time of the full component so that the circulating air flow rate of the circulating fan is substantially equal to that at the time of the full component.

[0007]

In the above-mentioned means for solving the problems, when the power is turned on, the combination discriminating means of the control circuit detects the connection between the dust removing unit and the additional unit based on the respective initial codes of the dust removing unit and the additional unit, and determines the unit combination state. I do. When the combination determining means determines that the unit combination state is the omitted unit, the tap setting means sets the tap of the circulating fan of the circulating unit to a tap at a lower stage than the full component time and circulates the circulating fan in the omitted unit. The air volume is almost the same as at full component.

Therefore, the amount of circulating air blown by the circulating fan when the omitted unit is not excessively large compared to when the component is full. Therefore, it is easy to set the amount of air to the circulating fan when designing the equipment and to reduce the operating noise when the unit is omitted. Can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 3 is a schematic cross-sectional view of a total heat exchange device at the time of a full component in which the dust removal unit C and the humidification unit M are combined with the circulation unit A and the heat exchange unit V as basic units, and FIG. 3A is a schematic cross-sectional view of the total heat exchange apparatus in a case where the heat exchange unit V is used as a basic unit and only the dust removal unit C is combined with an omitted unit.

3 and 4, reference numeral 1 denotes a total heat exchanger, R
1 is a room, R2 is an outdoor, R3 is a ceiling, and the total heat exchanger 1 is of a ceiling embedded type. As is clear from FIGS. 3 and 4, the total heat exchanger 1 has a circulation unit A for circulating clean air to the room R1 and a heat exchange unit V for ventilating room air and outdoor air as basic units. A dust removing unit C for removing dust and a humidifying unit M for humidifying air are selectively combined.

The configuration of the total heat exchanger 1 will be described with reference to FIG. 3 for convenience. The circulation unit A is disposed downstream of the dust removal unit C, and circulates the clean room circulating air SA1 to the room R1 with the first circulation fan MF2.
And a second circulation fan MF3 for circulating the clean outside air SA2 into the room R1. The circulation unit A is divided into upper and lower stages, and a supply chamber 2 for the clean room circulating air SA1 containing the first circulation fan MF2 is provided on the upper side.
However, on the lower side, a supply chamber 3 for air outside the clean room SA2 accommodating the second circulation fan MF3 is provided. The supply chamber 2 has a first supply duct 4 for supplying the clean room circulating air SA1 to the room R1, and the clean room outside air chamber 3 has a second supply duct for supplying the clean room outside air SA2 to the room R1. 5 are respectively connected. Circulation fan MF2, M
In F3, the drive current can be switched to, for example, extraordinary (H), strong (M), or weak (L) by a tap switching method in order to make the circulating air flow variable in multiple stages.

The heat exchange unit V is disposed upstream of the dust removal unit C with the humidification unit M interposed therebetween, and has a heat exchanger 6 for exchanging heat between the indoor air RA2 and the outdoor air OA.
The indoor heat exchange ventilation air EA that has passed through the heat exchanger 6
And a ventilation fan MF1 that exhausts air to the exhaust fan 2. The heat exchange unit V is divided into four parts around the heat exchanger 6, and the outdoor air OA is located on the upper left side in the figure.
, An introduction room 8 for introducing the indoor ventilation air RA2 into the heat exchanger on the upper right side, and a ventilation fan MF1 for accommodating the ventilation fan MF1 on the lower left side. A suction chamber 9 for sucking the indoor heat exchange ventilation air EA passing through the heat exchanger 6 from the outside, and the outdoor air O passing through the heat exchanger 6 from the outdoor air introduction chamber 7 on the lower right side.
A suction chamber 10 for sucking A by the second circulation fan MF3 is provided. The room ventilation air R
A bypass passage between the A2 introduction chamber 8 and the outdoor air OA suction chamber 10 for introducing the outdoor air OA from the indoor ventilation air introduction chamber 8 to the outdoor air suction chamber 10 bypassing the heat exchanger 6 (FIG. (Not shown) is connected.

The outdoor air OA introduction chamber 7 has outdoor air O
An outside air temperature sensor 11 for detecting the temperature of A and an inside air temperature sensor 12 for detecting the temperature of the indoor ventilation air RA2 are accommodated in the introduction room 8 of the indoor ventilation air RA2, respectively. Is provided with a damper 13 that opens and closes the boundary according to the difference between the temperature of the outdoor air OA and the temperature of the indoor ventilation air RA2. The driving of the damper 13 is performed by a damper motor (not shown). When the boundary between the introduction chambers 7 and 8 is opened without rotating the damper 13, the outdoor air OA bypasses the heat exchanger 6 from the introduction chamber 7 and is guided to the outdoor air suction chamber 10 through the bypass. When ventilation is performed and the damper 13 is rotated to close the boundary between the introduction chambers 7 and 8, outdoor air OA passes through the heat exchanger 6 from the introduction chamber 7 and passes through the suction chamber 1.
It is led to 0 and it becomes heat exchange ventilation.

A first suction duct 14 for sucking the outdoor air OA is provided in the outdoor air OA introduction chamber 7, and a second suction duct 14 for sucking the outdoor ventilation air RA2 is provided in the indoor ventilation air RA2 introduction chamber 8. The suction duct 15 is used for indoor heat exchange air EA.
An exhaust duct 16 for exhausting the indoor heat exchange ventilation air EA to the outdoor R2 is connected to each of the suction chambers 9.

The dust removing unit C is disposed downstream of the humidifying unit M with the high-performance filter 17 interposed therebetween. The dust removing unit C collects dust in the indoor circulating air RA1, and the outdoor air OA. And a second electric dust collecting element 19 for collecting dust therein. The dust removal unit C is divided into two stages, upper and lower. A first dust removal chamber 20 for the indoor circulating air RA1 that accommodates the first electric dust collection element 18 is located on the upper side, and a second dust collection chamber is located on the lower side. Element 1
The second dust removal chambers 21 for the outdoor air OA that accommodates the airbag 9 are provided. Then, the first electric precipitating element 1
8 and the high-performance filter 17, the indoor circulating air RA
A dust sensor 22 for detecting the dust concentration of the first dust is disposed. When the dust sensor 22 detects a dust concentration equal to or higher than a predetermined value, the electric dust collecting elements 18 and 19 are driven based on the detected dust concentration.

The humidifying unit M has a humidifier 23 for humidifying the indoor circulating air RA1.
Is connected to a suction duct 24 for sucking the air. At the end of the suction duct 24 for the indoor circulating air RA1 on the humidifying unit M side, a humidity sensor 25 for detecting a drying state of the indoor circulating air RA1 is arranged. Humidity sensor 2
When 5 detects humidity equal to or lower than a predetermined value, the humidifier 22 is driven based on the detected humidity.

The dust removing unit C and the humidifying unit M are configured to output initial codes X and Y corresponding to each unit to the control circuit 50 shown in FIG. 1 when the power is turned on. And in the total heat exchange device 1 of the present embodiment,
A control circuit 50 is provided for controlling the tap settings of the circulation fans MF2 and MF3 in accordance with the combination state of the dust removal unit C and the humidification unit M, which are units at the time of power-on initialization.

The configuration of the control circuit 50 will be described with reference to the block diagram shown in FIG. Control circuit 50
Includes a microcomputer having a CPU, a data RAM, a program ROM, and the like, and controls the operation of the apparatus according to a program stored in the ROM in advance.

That is, the control circuit 50 detects the connection between the dust removing unit C and the humidifying unit M based on the initial codes X and Y of the dust removing unit C and the humidifying unit M.
Dust removal unit C, humidification unit M for basic unit
Unit combination discriminating means 51 for discriminating whether or not both units are a full component to be combined, and when the combination discriminating means 51 determines that the component is not the full component,
Circulating fans MF2 and MF3 are so arranged that the amount of circulating air blown by circulating fans MF2 and MF3 is substantially the same as in full component
Tap setting means 52 for setting the tap of F3 to a tap at a lower stage than the full component time. In the figure, reference numeral 26 denotes a remote control switch.

The circulation fan MF in the above air cleaner
2, the circulating air volume control operation will be described with reference to the flowchart of FIG. At the time of initialization after the power is turned on, first, in Step 1, the unit combination determining means 51 of the control circuit 50 determines whether or not the humidifying unit M is connected based on the initial code Y of the humidifying unit M. Here, the initial code Y of the humidifying unit M is input to the combination discriminating means 51, and if the combination discriminating means 51 determines that the humidifying unit M is connected based on the input, the process proceeds to Step 2, and the combination discriminating means 51 When the initial code Y of the humidifying unit M is not input and the combination determining unit 51 determines that the humidifying unit M is not connected, the process proceeds to Step 7.

At Step 2, the union discriminating means 5
1 determines whether or not the dust removing unit C is connected based on the initial code X of the dust removing unit C. Here, the initial code X of the dust removing unit C is input to the combination discriminating means 51, and based on this, the combination discriminating means 51 determines that the dust removing unit C is connected.
If the process proceeds to p3 and the initial code Y of the humidifying unit M is not input to the combination determining unit 51, and the combination determining unit 51 determines that the humidifying unit M is not connected, St
Shift to ep8.

On the other hand, when the process shifts from Step 1 to Step 7, it is determined whether or not the dust removing unit C is connected as in Step 2. Here, when the union determination means 51 determines that the dust removal unit C is connected, Step
Then, if it is determined that the humidifying unit M is not connected, the process returns to Step 1. In Step 3, when the unit combination state is such that the units C and M are incorporated in the basic unit as shown in FIG. 3, the combination discriminating means 51 confirms that the units C and M are connected together. Then, it is determined that the combination state of the units is the full component, and the process proceeds to Step 4. St
In step ep4, the tap switching unit 52 determines whether the remote control switch 26 is installed. Here, when it is determined that the remote control switch 26 is installed, the process proceeds to Step 5, and the tap setting means 52 sets the taps of the circulation fans MF2 and MF3 corresponding to the strength / weakness of the remote control switch 26 to H according to the model. Set to / M or M / L. Also, St
If it is determined in ep4 that the remote control switch 26 is not installed, the process proceeds to Step 6, where the tap setting means 52 sets the taps of the circulation fans MF2 and MF3 to H or M according to the model.

On the other hand, in Step 8, when the combination state of the units is, for example, only the dust removal unit C is incorporated as shown in FIG. 4, the combination discriminating means 51 confirms that only the dust removal unit C is connected. It is determined that the unit combination status is the omitted unit, and the process proceeds to Step 9. When the process proceeds to Step 9, the tap switching means 5
2 determines whether the remote control switch 26 is installed. Here, if it is determined that the remote control switch 26 is installed, Step 10
And the tap setting means 52 sets the circulation fans MF2 and M
The taps of the circulation fans MF2 and MF3 corresponding to the strength / weakness of the remote control switch 26 are set to M / L in accordance with the model so that the amount of circulating air of F3 is substantially equal to that of the full component. If it is determined in Step 9 that the remote control switch 26 is not set, the process proceeds to Step 11, and the tap setting means 52 sets the circulation fan MF2 such that the circulation airflow of the circulation fans MF2 and MF3 becomes substantially equal to that in the full component mode. , MF
Tap 3 is set to M or L according to the model.

As described above, when the power is turned on, the control circuit 50
Unit combination discriminating means 51 detects the connection between the dust removing unit C and the humidifying unit M based on the respective initial codes X and Y of the dust removing unit C and the humidifying unit M, and discriminates the unit combination state. If the combination state of the units is determined to be an omitted unit, the tap setting means 52 sets the taps of the circulation fan circulation fans MF2 and MF3 to taps at a lower stage than in the full component mode. Fan MF2, M
The circulating air flow rate of F3 is almost equal to that of the full component. Therefore, the circulation fan MF2 in the omitted unit
The circulating air flow rate of the MF 3 is not excessive as compared with the full component.

Therefore, it is possible to reduce the operation noise when the omitted unit is used. Further, even when the unit is omitted, the amount of circulating air blown by the circulation fans MF2 and MF3 is almost the same as in the case of the full component, so that the capabilities of the dust removal unit C and the additional unit M can be sufficiently exhibited. For that purpose, it becomes easy to set the air volume for the circulation fans MF2 and MF3 when designing the equipment.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention. For example, in the above embodiment, the humidifier was described as an example of the additional unit, but a deodorizer may be combined as the additional unit,
The same effect can be obtained by combining a humidifier and a deodorizer as an additional unit.

[0027]

As is apparent from the above description, according to the present invention, when the combination determining means determines that the combination state of the unit is an omitted unit, the tap setting means sets the tap of the circulation fan of the circulation unit to the full component. Set the tap at a lower stage and make the circulation air flow of the circulation fan in the omitted unit almost equal to that in the full component.Therefore, the circulation air flow of the circulation fan in the omitted unit is too large compared to the full component. There is no.

Therefore, there is an excellent effect that it is easy to set the air volume for the circulating fan at the time of designing the equipment, and it is possible to reduce the operating noise when the unit is omitted.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a total heat exchanger according to one embodiment of the present invention.

FIG. 2 is a flowchart of the same.

FIG. 3 is a schematic sectional view of the total heat exchange device at the time of a full component.

FIG. 4 is a schematic cross-sectional view of the total heat exchanger when a unit is omitted.

[Explanation of symbols]

 Reference Signs List A circulation unit V heat exchange unit C dust removal unit M humidification unit (additional unit) MF2, MF3 circulation fan 6 heat exchanger 18, 19 electric dust collection element 23 humidifier 50 control circuit 51 unit combination discriminating means 52 tap switching means

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-116329 (JP, A) JP-A-3-191248 (JP, A) JP-A-1-134484 (JP, U)

Claims (1)

(57) [Claims] An electric precipitator (18) (1) comprising a circulation unit (A) having circulation fans (MF2) and (MF3) and a heat exchange unit (V) having a heat exchanger (6) as basic units. In a total heat exchange device in which a dust removing unit (C) having (19) and an additional unit (M) having a humidifier (23) or a deodorizer are selectively combined, the circulation fan (MF2) (MF3) includes: The tap switching type is adopted in order to make the circulating air volume variable in multiple stages.The dust removal unit (C) and the additional unit (M) have an initial code corresponding to each unit (C) (M) when the power is turned on.
(X) and (Y) are output.
(C), a control circuit (50) for setting tap switching of the circulation fans (MF2) (MF3) according to the combination state of the additional unit (M) is provided, and the control circuit (50) is provided with the dust removal unit. (C), the connection of the dust removal unit (C) and the additional unit (M) is detected based on each initial code (X) (Y) of the additional unit (M), and the dust removal units (C) and A unit combination discriminating means (51) for discriminating whether or not both units of the additional unit (M) are a full component to be combined.When the combination discriminating means (51) determines that the component is not the full component, a circulation fan (MF2) ( Circulating fan so that the circulating air flow of MF3) is almost the same as the full component
A tap setting means (52) for setting taps of (MF2) and (MF3) to taps at a lower stage than at the time of full component.