JP2021008998A - Air conditioner and air conditioning installation - Google Patents

Abstract

To provide a simple air conditioner that can readily change an amount of gas to be supplied.MEANS FOR SOLVING THE PROBLEM: An air conditioner includes: an input part for taking a gas therein; an output part for supplying a gas; a temperature regulating blower part for regulating temperature of the gas taken therein from the input part and supplying the gas to the output part; and an air circulating part for transferring a predetermined amount of the gas supplied to the output part by the temperature regulating blower part to the input part.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air conditioner and an air conditioner.

When air-conditioning a space that handles harmful or toxic volatile substances, air-conditioning equipment that exhausts gas from the air-conditioned room, which is the target of air-conditioning, and supplies gas with controlled temperature or humidity to the air-conditioned room from the outside. Is used. Further, an air-conditioning system is also used in which the amount of gas supplied to the air-conditioned room is changed according to the amount of gas exhausted from the air-conditioned room to keep the pressure in the air-conditioned room constant. (See Patent Document 1).

JP-A-59-205539

Conventionally, in order to keep the pressure in the air-conditioned room constant even if the amount of gas exhausted from the air-conditioned room increases or decreases, the air supply fan of the air conditioner that supplies the temperature-controlled gas from the outside to the air-conditioned room. It was necessary to appropriately control the number of rotations of the air-conditioned room according to the pressure in the air-conditioned room. For this reason, expensive air conditioning equipment including an expensive air conditioner capable of adjusting the rotation speed of the air supply fan has been required.

The air conditioner according to the first aspect includes an input unit that takes in gas, an output unit that supplies gas, a temperature control air blower unit that adjusts the temperature of the gas taken in from the input unit and supplies it to the output unit, and the temperature. The air conditioner includes a ring portion for transferring a predetermined amount of gas among the gases supplied to the output side to the input portion.
The air conditioner according to the second aspect further includes, in the air conditioner according to the first aspect, a receiving unit for receiving information regarding the amount of gas to be flowed from the output unit to the air-conditioned room, and the receiving unit receives the information. Based on the information obtained, the flow rate of the gas flowing from the output unit to the air conditioning target is controlled.
The air conditioning equipment according to the third aspect includes the air conditioner according to the second aspect, an exhaust amount measuring unit that measures the amount of gas exhausted from the air-conditioned room, and information on the amount of gas measured by the exhaust amount measuring unit. Is provided to the receiving unit of the air conditioner.

According to the present invention, it is possible to realize a simple air conditioner in which the amount of gas to be supplied can be easily changed.

The figure which shows the schematic structure of the air-conditioning equipment provided with the air conditioner of one Embodiment. The figure which shows the schematic structure of the modification of the air-conditioning equipment.

(Air conditioner and air conditioning equipment of one embodiment)
FIG. 1 is a diagram showing a schematic configuration of an air conditioner 1 including the air conditioner 2 of one embodiment. The air conditioner 2 surrounded by a broken line has a temperature control air blowing unit 3. An input unit 4 is connected to the intake side of the temperature control air blowing unit 3 via a duct 9b. An output unit 5 is connected to the supply side of the temperature control air blower 3 (the side where gas is blown out from the temperature control air blower 3) via a duct 9c. As shown in FIG. 1, for example, outside air is taken into the input unit 4 via the outside air intake unit 14 and the duct 9a.

The temperature control blower unit 3 includes a cooling mechanism, a heating mechanism, a humidifier, and a blower fan, takes in gas from the input unit 4, adjusts the temperature and humidity, and supplies the gas to the output unit 5. The temperature control blower unit 3 may include a dust removal filter. The temperature control air blowing unit 3 may be a commercially available ordinary outside air processing air conditioner as an example.
From the output unit 5, gas whose temperature and humidity are controlled is supplied to the air-conditioned room 30 via ducts 9d and 9e, the second flow rate control unit 10, and the supply port 15 as shown in FIG. 1, for example. Will be done.

The air conditioner 2 of one embodiment has ducts 8a and 8b and a first flow rate control unit 7 for transferring a predetermined amount of gas from the output unit 5 to the input unit 4. A part of the gas supplied by the temperature control air blowing unit 3 to the output unit 5 is transferred (circulated) to the input unit 4 through the ducts 8a and 8b and the first flow rate control unit 7. Hereinafter, the ducts 8a and 8b and the first flow rate control unit 7 are also referred to collectively or individually as the “ring unit” 6.
The arrow indicated by the broken line in the figure indicates the moving direction of the gas in the ducts 8a, 8b, 9e, 9f, or the temperature control air blowing section 3 in the vicinity thereof.

Both the first flow rate control unit 7 and the second flow rate control unit 10 are provided with a damper opening / closing type variable air volume system (VAV) as an example.
The first flow rate control unit 7 includes a receiving unit 11, and the opening / closing amount of the damper is controlled based on the signal S2 (control command) received by the receiving unit 11, and the first flow rate control unit 7 moves from the output unit 5 to the input unit 4 The flow rate of the gas flowing toward is controlled.

The second flow rate control unit 10 includes a receiving unit 12, and the opening / closing amount of the damper is controlled based on the signal S3 (control command) received by the receiving unit 12, and the second flow rate control unit 10 moves from the output unit 5 to the air-conditioned room. The flow rate of the gas flowing toward 30 is controlled.
As used herein, the term "amount of gas" refers to, for example, the volume of gas under atmospheric pressure. The "gas flow rate" refers to the volume of gas flowing per unit time under atmospheric pressure.

In the air-conditioning equipment 1 of one embodiment, the air-conditioning machine 2 is installed in the air-conditioning machine room 31. The air-conditioning machine room 31 is a space partitioned by a floor 35b, a floor (ceiling) 35c, and walls 36a and 36a. On the other hand, the air-conditioned room 30, which is a space to be air-conditioned by the air conditioner 2, is a space partitioned by a floor 35a, a floor (ceiling) 35b, and walls 36a and 36b. The ceiling 35b of the air-conditioning target room 30 is the floor 35b of the air-conditioning machine room 31.
As described above, the gas temperature-controlled by the air conditioner 2 is supplied from the output unit 5 to the air-conditioned room 30 via the ducts 9d and 9e, the second flow rate control unit 10, and the supply port 15. The supply port 15 is a ventilation portion provided on the ceiling 35b of the air-conditioned room 30.

A draft chamber 20 which is a facility for handling volatile harmful substances or toxic substances is installed in the air-conditioned room 30. A duct 9f is connected to the draft chamber 20 via a flow meter 21, and the other end of the duct 9f is connected to an exhaust fan 25 installed in the exhaust machine room 32. The exhaust machine room 32 is a space partitioned by a floor 35c, a floor (ceiling) 35d, and walls 36a and 36a.

By the exhaust fan 25, the gas in the draft chamber 20 is exhausted to the outside from the exhaust unit 26 outside the exhaust machine room 32 through the duct 9f and the duct 9g. Upon exhausting, harmful substances or toxic substances handled in the draft chamber 20 are removed by a removing device such as an adsorption filter installed in the draft chamber 20 or a part of the duct 9f.

When the gas in the draft chamber 20 is exhausted by the exhaust fan 25, the amount of gas in the air-conditioned chamber 30 in which the draft chamber 20 is installed decreases, and the air pressure drops. Therefore, the air conditioner 2 supplies the conditioned gas corresponding to the amount of the gas exhausted by the exhaust fan 25 from the supply port 15 into the air-conditioned room 30.

The flow meter 21 provided in the fume hood 20 measures the amount of gas exhausted by the exhaust fan 25. As the flow meter 21, for example, a differential pressure type, ultrasonic type, pitot tube type or other flow meter can be used. The amount of exhaust gas measured by the flow meter 21 is sent as a signal S5 to the control panel 22 provided in the fume hood 20. Based on the signal S5, the control panel 22 generates and transmits a signal S2 to be transmitted to the receiving unit 11 of the first flow rate control unit 7 and a signal S3 to be transmitted to the receiving unit 12 of the second flow rate control unit 10. That is, the control panel 22 also functions as a transmission unit that transmits the signal S2 and the signal S3.

The second flow rate control unit 10 controls the opening / closing amount of the damper based on the signal S3 received by the reception unit 12, and thereby the air-conditioned room 30 from the output unit 5 via the ducts 9d, 9e, and the supply port 15. Control the amount of gas supplied to. The signal S3 may be a signal indicating the amount of exhaust gas (hereinafter, referred to as “exhaust amount”) measured by the flow meter 21, and supplies an equal amount of gas to the air-conditioned room 30. It may be a signal indicating the opening / closing amount of the damper in the second flow rate control unit 10 required for the operation.

The first flow rate control unit 7 controls the amount of opening and closing of the damper based on the signal S2 received by the reception unit 11, so that the amount of gas transferred from the output unit 5 to the input unit 4 by the ring air unit 6 can be determined. Control. The signal S2 may be, for example, a signal indicating the amount obtained by subtracting the above exhaust amount from the flow rate of the temperature control air blowing unit 3 blowing air from the input unit 4 to the output unit 5, and outputs the subtracted amount of gas. It may be a signal indicating the opening / closing amount of the damper in the first flow control unit 7 required for transferring from the unit 5 to the input unit 4.
The flow rate at which the temperature control air blowing unit 3 blows air from the input unit 4 to the output unit 5 may be stored as, for example, a fixed value in the control panel 22 that generates the signal S2.

The control panel 22 provided in the fume hood 20 sends a signal S4 to the exhaust fan 25, and causes the exhaust fan 25 so that the exhaust amount measured by the flow meter 21 matches the amount to be exhausted set by the user. You may control it.
When the amount of exhaust gas exhausted by the exhaust fan 25 is less than a predetermined value, the control panel 22 may send a signal S1 to the temperature control air blower unit 3 in the air conditioner 2 to stop the temperature control air blower unit 3. ..

Alternatively, the control panel 22 sends a signal S1 to the temperature control air blower unit 3 according to the amount of gas exhausted by the exhaust fan 25, and controls the air volume sent by the temperature control air blower unit 3 from the input unit 4 to the output unit 5. You may. In this case, the control panel 22 may generate the above-mentioned signal 2 as the flow rate at which the temperature control blowing unit 3 blows the air volume to be controlled from the input unit 4 to the output unit 5.

In the air conditioner 2 of the above embodiment, of the gas whose temperature and humidity are adjusted by the temperature control blower unit 3, the portion that is not supplied to the air conditioning target room 30 is not exhausted and is not exhausted. Is transferred to and is supplied to the temperature control air conditioner 3 again. Therefore, the air conditioner 2 of one embodiment can efficiently air-condition the gas without discarding the temperature-controlled gas, that is, without wasting energy.

Looking at the above from another point of view, by transferring the gas of the output unit 5 to the input unit 4, the temperature and humidity of the gas taken in from the input unit 4 by the temperature control air blower unit 3 are adjusted to the temperature control air blower unit rather than the outside air. The temperature and humidity targeted by 3 can be approached. As a result, the temperature and humidity conditions of the outside air to be supplied to the air conditioning equipment 1 can be relaxed. That is, the air conditioner 2 and the air conditioner 1 of the above embodiment can be used under environmental conditions having a wider temperature range and humidity range than the conventional ones.

In the above embodiment, the air conditioner 2 is installed in the air conditioning machine room 31, and the exhaust fan 25 is installed in the exhaust machine room 32. However, the installation location of the air conditioner 2 and the exhaust fan 25 is not limited to this, and both the air conditioner 2 and the exhaust fan 25 may be installed in the air conditioning machine room 31. Alternatively, the air conditioner 2 or the exhaust fan 25 may be installed outdoors.

In the above embodiment, the first flow rate control unit 7 and the second flow rate control unit 10 are provided with a damper opening / closing type variable air volume device. However, the first flow rate control unit 7 and the second flow rate control unit 10 are not limited to this, and are of a method in which a blower fan is built in and the air volume is controlled by controlling the rotation speed of the blower fan. You may.

If the amount of gas supplied from the air conditioner 2 to the air-conditioned room 30 is controlled only by the flow rate control by the second flow rate control unit 10, the first flow rate control unit 7 may not be provided. good. In this case, the ring portion 6 is composed of ducts 8a and 8b connecting the output unit 5 and the input unit 4. When the supply amount of the supply to the air-conditioned chamber 30 is limited by the second flow rate control unit 10, the air pressure in the output unit 5 rises, so that the output unit 5 is transferred to the input unit 4 via the ducts 8a and 8b. Gas flows.
By providing the first flow rate control unit 7, it is possible to prevent pressure fluctuations such as the output unit 5 becoming excessively positive pressure.

Further, when the air-conditioned room 30 side is provided with a function of controlling the amount of gas flowing in through the supply port 15, the air conditioner 2 does not have to have the second flow rate control unit 10. Also in this case, the gas having a flow rate exceeding the flow rate limited by the control function on the air-conditioned room 30 side is transferred from the output unit 5 in the air conditioner 2 to the input unit 4 by the air-conditioning unit 6. Therefore, the amount of gas supplied by the air conditioner 2 to the air-conditioned room 30 can be easily changed.
Further, since the gas having a flow rate exceeding the flow rate limited by the control function on the air-conditioning target room 30 side is also transferred to the input unit 4 without being exhausted, highly energy-efficient air conditioning can be realized.

Further, both the first flow rate control unit 7 and the first flow rate control unit 10 are not limited to strictly controlling the flow rate, but increase or decrease the resistance to the gas flow to change the gas flow state. You may.

In the above embodiment, it is assumed that the exhaust from the air-conditioned room 30 is performed through the draft chamber 20 installed in the air-conditioned room 30. However, the exhaust of the air-conditioned room 30 may be performed through an exhaust facility such as an exhaust port installed in the air-conditioned room 30 itself. In this case, the exhaust facility includes a flow meter 21 and a control panel 22, and transmits the above-mentioned signals S1 to S4.
Further, the air-conditioned room 30 is not limited to the space partitioned by the floor, the ceiling and the wall as described above, but may be a space in a closed or semi-sealed device.

In the above embodiment, the input unit 4 is a portion where the ducts 9a and 9b connecting the outside air intake unit 14 and the intake side of the temperature control air supply unit 3 and the duct 8b which is a part of the ring air portion 6 branch. Any shape may be used as long as it is used. The input unit 4 may be, for example, a branch box in which the duct 9a, the duct 9b, and the duct 8b are connected. Further, it may be a branch joint connecting the duct 9a, the duct 9b and the duct 8b.
The input unit 4 may be a branch unit provided on the intake side of the temperature control air supply unit 3 without a duct.

Similarly, the output unit 5 may be a portion where the ducts 9d and 9e connecting the supply side of the temperature control air blowing unit 3 and the second flow rate control unit 10 and the duct 8a which is a part of the ring air portion 6 are branched. For example, the portion may have any shape. The output unit 5 may be, for example, a branch box in which the duct 9d, the duct 9e, and the duct 8a are connected. Further, it may be a branch joint connecting the duct 9d, the duct 9e and the duct 8a.
The output unit 5 may be a branch unit provided on the supply side of the temperature control air blowing unit 3 without passing through a duct.

(Modified air conditioning equipment)
FIG. 2 is a diagram showing a schematic configuration of the air-conditioning equipment 1a of the modified example. Since many configurations of the air-conditioning equipment 1a of the modified example are common to the air-conditioning equipment 1 of the above-described embodiment, the same reference numerals are given to the common configurations below, and the description thereof will be omitted as appropriate.

The configuration of the air conditioner 2 used in the air conditioner 1a of the modified example is the same as that of the air conditioner 1 of the above-described embodiment shown in FIG. Therefore, in FIG. 2, the air conditioner 2 is only shown as an overall outline thereof, and the illustration of the internal configuration of the air conditioner 2 is omitted.

In the air-conditioning equipment 1a of the modified example, one embodiment is provided with an air conditioner 2, an exhaust fan 25, ducts 9e, 9f, etc. connecting them for each of the plurality of air-conditioned rooms 30a to 30c. It is different from the air conditioning equipment 1 of.
In other words, it can be said that the air-conditioning equipment 1a of the modified example is one in which a plurality of air-conditioning equipments 1 of the position embodiment are arranged.
In the air-conditioning equipment 1a of the modified example, a plurality of air conditioners 2 that can be operated independently air-condition one of the plurality of air-conditioned chambers 30a to 30c. The number of the air-conditioned rooms 30a to 30c and the air conditioner 2 is not limited to the three shown in the figure, and may be any number.

In conventional air-conditioning equipment having a plurality of air-conditioned rooms, a so-called central air-conditioning air supply system has been generally adopted. That is, the air-conditioned gas was supplied from the air conditioners integrated into one to each air-conditioned room via a duct. Therefore, in the past, when the amount of gas exhausted from each of the plurality of air-conditioned rooms fluctuated, it was not easy to maintain the balance between the supply and exhaust amounts.

In the air-conditioning equipment 1a of the modified example, an air-conditioner 2 capable of easily changing the amount of gas to be supplied is installed in each of the plurality of air-conditioned rooms 30a to 30c. Therefore, even when the amount of gas exhausted from the air-conditioned rooms 30a to 30c fluctuates, the balance of the supply and exhaust amounts of the air-conditioned rooms 30a to 30c can be easily maintained.

Further, in the modified example of the air-conditioning equipment 1a, it is possible to suppress the initial cost for constructing the air-conditioning equipment as compared with the conventional central air-conditioning air supply system. This eliminates the need to install ducts that straddle each of the plurality of air-conditioned rooms 30a to 30c, and is also necessary when air-conditioning a plurality of air-conditioned rooms with an air conditioner integrated into one. It also includes cost reduction by eliminating the need to develop control programs.

Further, in the air-conditioning equipment 1a of the modified example, the maintenance of the air-conditioning equipment 1a can also be performed independently for each of the air-conditioned rooms 30a to 30c. Therefore, there is an advantage that maintenance can be performed for each room according to the usage schedule of the air-conditioned rooms 30a to 30c, and equipment management for maintenance can be simplified. Further, since the air-conditioning equipment of each air-conditioned room 30a to 30c is independent, for example, even if the air conditioner 2 of the air-conditioned room 30a fails, the other air-conditioned rooms 30b and 30c can be independently air-conditioned. There is also the advantage of being able to do it.

Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Moreover, each embodiment and modification may be applied individually or may be used in combination. Other aspects conceivable within the scope of the technical idea of the present invention are also included within the scope of the present invention.

(Aspect)
It will be understood by those skilled in the art that the plurality of exemplary embodiments described above are specific examples of the following embodiments.

(Clause 1) The air conditioner according to one aspect includes an input unit that takes in gas, an output unit that supplies gas, and a temperature control air blower unit that adjusts the temperature of the gas taken in from the input unit and supplies it to the output unit. And a ring portion for transferring a predetermined amount of gas among the gases supplied to the output portion by the temperature control air blowing unit to the input portion.
With this configuration, among the gases supplied from the temperature control air blowing unit 3 to the output unit 5, excess gas other than the gas supplied from the output unit 5 to the outside (air conditioning target room 30 and the like) is generated by the ring air unit 6. It is transferred to the input unit 4. As a result, it is possible to easily realize the air conditioner 2 in which the amount of gas supplied from the output unit 5 to the outside can be easily changed.

(Paragraph 2) The air conditioner according to another aspect is the air conditioner according to the first aspect, wherein the air conditioner controls a flow state of a gas transferred from the output unit to the input unit. It has a flow control unit.
With this configuration, the amount of gas transferred from the output unit 5 to the input unit 4 can be controlled, and the amount of gas supplied from the output unit 5 to the outside can be accurately adjusted.

(Item 3) The air conditioner according to the other aspect includes the second flow rate control unit on the flow path from the output unit to the air-conditioned room in the air conditioner according to the first or second aspect.
With this configuration, the amount of gas supplied from the output unit 5 to the outside can be adjusted more accurately.

(Clause 4) The air conditioner according to another aspect is the air conditioner according to the third aspect, and the second flow control unit receives information on the amount of gas to be flowed from the output unit to the air conditioning target room. It has a receiving unit to receive, and controls the flow rate of gas flowing from the output unit to the air-conditioned room based on the information received by the receiving unit.
With this configuration, the amount of gas to be supplied can be accurately supplied from the output unit 5 to the outside.

(Section 5) The air-conditioning equipment according to another aspect includes the air conditioner according to paragraph 4, an exhaust volume measuring unit for measuring the amount of gas exhausted from the air-conditioned room, and the exhaust volume measuring unit. It has a transmitter that transmits information about the measured amount of gas to the receiver of the air conditioner.
With this configuration, the air-conditioning equipment 1 can supply the air-conditioned room 30 to be air-conditioned with an amount of gas based on the amount of gas exhausted from the air-conditioned room 30.

(Section 6) In the air conditioning equipment according to the other aspect, the input unit is connected to an outside air intake unit that takes in outside air in the air conditioning equipment according to the fifth aspect.
In this configuration, the gas transferred from the output unit 5 is supplied together with the outside air to the input unit 4 of the air conditioner 2 in the air conditioner 1. Since the gas transferred from the output unit 5 is a gas that has already been air-conditioned by the temperature control air blower unit 3, the temperature control air blower unit 3 compares the temperature and humidity of the gas supplied to the input unit 4 with the outside air. It can approach the target temperature and humidity. Therefore, the conditions of the temperature and humidity of the outside air to be supplied to the air conditioner 1 can be relaxed, that is, the air conditioner 1 that can be used in a wider range of environmental conditions can be realized.

(Section 7) The air-conditioning equipment according to the other aspect has a plurality of the air-conditioning equipments according to the fifth or sixth paragraph, and each of the plurality of the air-conditioning equipments is one of a plurality of air-conditioned rooms. Air-condition one.
With this configuration, it is possible to independently air-condition a plurality of air-conditioned rooms 30a to 30c to be air-conditioned.

1,1a ... Air conditioning equipment, 2 ... Air conditioner, 3 ... Temperature control air blower, 4 ... Input section, 5 ... Output section, 6 ... Circulation section, 7 ... First flow control section, 8a to 8b, 9a to 9g ... Duct, 10 ... Second flow control unit, 11, 12 ... Receiver unit, 14 ... Outside air intake unit, 15 ... Supply port, 20 ... Draft chamber, 21 ... Flow meter, 22 ... Control panel, 25 ... Exhaust fan, 26 ... Exhaust unit, 30, 30a to 30c ... Air conditioning target room, 31, 31a to 31c ... Air conditioning machine room, 32, 32a to 32c ... Exhaust machine room, 35a to 35d ... Floor (ceiling), 36a to 36d ... Wall

Claims (7)

Input section that takes in gas and
The output unit that supplies gas and
A temperature control blower that regulates the temperature of the gas taken in from the input section and supplies it to the output section.
A ring portion that transfers a predetermined amount of gas among the gases supplied by the temperature control blower unit to the output unit to the input unit, and
Equipped with an air conditioner. In the air conditioner according to claim 1,
The air conditioner has a first flow rate control unit that controls a flow state of gas transferred from the output unit to the input unit. In the air conditioner according to claim 1 or 2.
An air conditioner including a second flow rate control unit on a flow path from the output unit to the air-conditioned room. In the air conditioner according to claim 3,
The second flow rate control unit
It has a receiving unit that receives information about the amount of gas to be flowed from the output unit to the air-conditioned room.
An air conditioner that controls the flow rate of gas flowing from the output unit to the air-conditioned room based on the information received by the receiving unit. The air conditioner according to claim 4 and
A displacement measuring unit that measures the amount of gas exhausted from the air-conditioned room,
An air conditioner including a transmission unit that transmits information on the amount of gas measured by the displacement measurement unit to the reception unit of the air conditioner. In the air conditioning equipment according to claim 5,
An air conditioner in which the input unit is connected to an outside air intake unit that takes in outside air. The air conditioning equipment according to claim 5 or 6 is provided.
An air conditioner in which each of the plurality of air conditioners air-conditions any one of a plurality of air-conditioned rooms.

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