JP2004245538A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of improving the detecting accuracy of a detector mounted just behind a humidifier. <P>SOLUTION: This air conditioner is provided with the dehumidifier and the detector, and a temperature or a humidity of the air dehumidified by the dehumidifier is measured with the detector to control the operation of the dehumidifier. This air conditioner is also provided with a plurality of sampling hoppers mounted at a downstream side of the dehumidifier, an introduction pipe on which the plurality of sampling hoppers are mounted, a detecting container on which the introduction pipe and the detector are mounted, and a lead-out pipe connecting a bottom part side of the detecting container and a downstream-side space of an appliance positioned at a downstream side with respect to the dehumidifier. The detecting container introduces the air on the downstream side of the dehumidifier through the introduction pipe by the differential pressure between the downstream side of the dehumidifier and the downstream-side space of the appliance, and leads out to the downstream-side space through the lead-out pipe. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner including a humidifier and a detector.
[0002]
[Prior art]
Conventionally, in precision air conditioning such as industrial air conditioning, temperature control of outside air and temperature control of circulating air are performed separately, and an air conditioner equipped with a steam humidifier is used for these (for example, Patent Document 1). , Patent Document 2).
A steam humidifier humidifies air by ejecting steam to an air flow path in an air conditioner (for example, see Patent Document 3).
3 and 4 show an example of a conventional air conditioner including a steam humidifier and a detector.
[0003]
The air conditioner 1 includes a pre-filter 5, a steam coil 6, and a steam humidifier in a casing 2 having an outside air inlet 3 and a process air outlet 4 from the outside air inlet 3 to the process air outlet 4. A filter 7, a chemical filter 8, a medium performance filter 9, a HEPA filter 10, a cold water coil 11, a steam coil 12, a steam humidifier 13, and a blower 14 are installed in this order.
[0004]
A dew point temperature detector (humidifying sensor) 15 is attached to the ceiling of the casing 2 between the steam humidifier 7 and the chemical filter 8. The steam humidifier 7 has two stages, and jets steam downstream.
A dew point temperature controller 16 communicates with the dew point temperature detector (humidification sensor) 15, and the dew point temperature controller 16 communicates with a humidification steam control valve 18 attached to a pipe 17 that sends steam to the steam humidifier 7. I have.
[0005]
According to the conventional air conditioner 1 configured as described above, the outside air that has flowed in from the outside air inlet 3 is subjected to removal of dust by the prefilter 5, heated by the steam coil 6, and ejected by the steam humidifier 7. After being humidified to a predetermined humidity by the steam and subjected to predetermined processing by a chemical filter 8, a medium-performance filter 9, a HEPA filter 10, a chilled water coil 11, a steam coil 12, and a steam humidifier 13 at the subsequent stage, the blower 14 To the load side.
[0006]
Then, the dew point temperature detector (humidifying sensor) 15 detects the dew point temperature of the air humidified by the steam ejected by the steam humidifier 7, and the dew point temperature controller 16 determines the dew point temperature based on the detected value. The operation of the steam humidifier 7 is controlled by adjusting the humidification steam control valve 18 to a value.
[Patent Document 1]
Japanese Patent Application Laid-Open No. 64-14539 [Patent Document 2]
JP-A-2-37237 [Patent Document 3]
Japanese Patent No. 3120021 [0007]
[Problems to be solved by the invention]
However, the dew point temperature detector (humidifying sensor) 15 could not reach the point to be detected because the length of the detecting part 15a was short, and could only measure near the detecting part 15a. In particular, there is a problem that the heat insulating thickness of the outer plate of the air conditioner 1 is increased in the housing portion in which the steam humidifier 7 is built-in to prevent dew condensation, and it is difficult to reach the measurement point.
Further, the steam humidifier 7 has a cross section orthogonal to the flow of the air, so that local humidification tends to cause unevenness in the cross section behind the jet, and an appropriate installation position of the dew point temperature detector (humidification sensor) 15 is determined. There is a problem that it is difficult to determine, and it is difficult to make the humidity distribution on the downstream side uniform.
[0008]
Therefore, it has been difficult to uniformly and uniformly measure the humidity (dew point temperature) in the air conditioner 1.
For this reason, there was a problem that over-humidification and under-humidification were likely to occur.
In addition, excessive humidification also causes a problem that the performance of the chemical filter 8, the medium-performance filter 9, and the HEPA filter 10 in the subsequent stage tends to be deteriorated.
[0009]
In order to equalize the detected values of the humidity (dew point temperature) in the air conditioner 1, it has been proposed to install a plurality of dew point temperature detectors (humidifying sensors) 15, but this increases the cost. In addition, there is a problem that maintenance becomes difficult, and it cannot be an essential improvement.
Here, the dew point temperature detector (humidifying sensor) 15 has been described, but the dry bulb thermometer, the wet bulb meter, and the related humidity sensor also have similar problems.
[0010]
The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an air conditioner that can increase the detection accuracy of a detector provided immediately after a humidifier. is there.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 is an air conditioner that includes a humidifier and a detector, measures the temperature or humidity of air humidified by the humidifier by the detector, and controls the operation of the humidifier. A plurality of sampling hoppers arranged on the downstream side of the humidifier, an introduction tube to which the plurality of sampling hoppers are attached, a detection container to which the introduction tube is attached and the detector is attached, and a bottom side of the detection container. An outlet pipe connecting the downstream space of the device located downstream of the humidifier, and the detection container, the air downstream of the humidifier, downstream of the humidifier and downstream of the device It is characterized in that it is introduced through the introduction pipe by a pressure difference with the space, and is led out to the space on the downstream side of the device through the outlet pipe.
[0012]
The invention according to a second aspect is the air conditioner according to the first aspect, wherein the plurality of sampling hoppers are arranged at a predetermined interval with respect to the humidifier.
The invention according to claim 3 is the air conditioner according to claim 1, wherein the humidifier is a steam humidifier, a water humidifier, or an evaporative humidifier.
[0013]
The invention according to claim 4 is the air conditioner according to claim 1, wherein the detector is a dew point temperature detector, a dry bulb thermometer, a wet bulb meter, and a related humidity sensor.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 and 2 show an air conditioner 20 according to one embodiment of the present invention.
In the present embodiment, similarly to the conventional air conditioner 1 shown in FIGS. 3 and 4, the processing air is introduced from the outside air inlet 3 into the housing 2 having the outside air inlet 3 and the processing air outlet 4. A pre-filter 5, a steam coil 6, a steam humidifier 7, a chemical filter 8, a medium-performance filter 9, a HEPA filter 10, a cold water coil 11, a steam coil 12, a steam humidifier 13, and a blower 14 are sequentially installed toward the outlet 4. The case where the present invention is applied to the air conditioner described above will be described.
[0015]
In the air conditioner 20 according to the present embodiment, the dew point temperature detector (humidification sensor) 21 is not attached to the ceiling of the housing 2 as in the conventional air conditioner 1 shown in FIGS. .
The dew point temperature detector (humidification sensor) 21 is mounted in a detection container 22 separately mounted on the housing 2. The dew point temperature detector (humidifying sensor) 21 is connected to a dew point temperature controller 16, and the dew point temperature controller 16 is connected to a humidifying steam control valve 18 attached to a pipe 17 that sends steam to the steam humidifier 7. I have.
[0016]
The detection vessel 22 has a plurality of (e.g., 16) sampling hoppers 24 attached downstream of the steam humidifier 7 and an introduction pipe 23 attached thereto, and a bottom side of the detection vessel 22 and a downstream side from the steam humidifier 7. An outlet pipe 25 connecting the space 30 located on the downstream side of the positioned medium-performance filter 9 is provided.
The same number of sampling hoppers 24 are provided for the humidifying section and the non-humidifying section in a cross section orthogonal to the flow of air. Here, eight upper and lower steam humidifiers 7a and 7b are provided at equal intervals, respectively, and the upper sampling hopper 24a is used for the non-humidifying section and the lower sampling hopper 24b is used for the humidifying section. The number and arrangement of the sampling hoppers 24a and 24b are arbitrary, and the arrangement and number thereof are not particularly limited as long as the detection by the dew point temperature detector (humidifying sensor) 21 is reliably performed.
[0017]
The sampling hopper 24 can suck in the air at that location by the differential pressure between the inlet pipe 23 and the outlet pipe 25. The differential pressure here depends on the ventilation resistance in the housing 2 and the diameters of the sampling hopper 24, the inlet pipe 23, and the outlet pipe 25, and is not particularly limited, but may be, for example, about 50 to 100 Pa.
As the sampling hopper 24, the inlet tube 23, and the outlet tube 25, a synthetic resin tube such as vinyl chloride or a SUS tube is used.
[0018]
The outlet pipe 25 is provided with a flow control valve 26. The detected humidified air and the condensed water are discharged from the outlet pipe 25 into the space 30. By adjusting the flow control valve 26, the amount of air from the sampling hopper 24 can be adjusted.
At the bottom of the detection container 22, a drain for discharging water accumulated inside is provided.
[0019]
Next, the operation of the air conditioner 20 according to the present embodiment thus configured will be described.
The outside air that has flowed in from the outside air inlet 3 is cleaned of dust by the pre-filter 5, heated by the steam coil 6, humidified to a predetermined humidity by the steam ejected by the steam humidifier 7, and formed in the chemical filter 8 in the subsequent stage. After a predetermined process is performed by the medium-performance filter 9, the HEPA filter 10, the cold water coil 11, the steam coil 12, and the steam humidifier 13, the air is sent to the load side by the blower 14.
[0020]
On the other hand, on the downstream side of the steam humidifier 7, the normal line of the humidified steam ejected from the steam humidifier 7 flows almost in parallel. Then, due to the pressure difference between the sampling hopper 24 and the outlet pipe 25, the steam ejected from the steam humidifier 7 and the introduced air are converted into the sampling hopper 24a for the upper non-humidifying section and the sampling hopper 24a for the lower humidifying section. The liquid is sucked from the sampling hopper 24b and introduced into the detection container 22.
[0021]
In the detection container 22, the introduced steam and air form an averaged air state, and the dew point temperature detector (humidifying sensor) 21 detects the averaged air state.
Then, when the dew point temperature detector (humidification sensor) 21 detects the averaged humidity of the air in the detection container 22, the dew point temperature controller 16 humidifies the humidity based on the detected value so that the humidity becomes a predetermined value. The operation of the steam humidifier 7 is controlled by adjusting the steam control valve 18.
[0022]
Further, the dew water in the detection container 22 is discharged into the space 30 on the downstream side through the outlet pipe 25.
As described above, according to the air conditioner 20 according to the present embodiment, when the introduced outside air is humidified by the steam ejected from the steam humidifier 7, the steam humidifier is provided downstream of the steam humidifier 7. 7 are sucked by the sampling hoppers 24a and 24b provided in the humidifying section and the non-humidifying section, respectively, flow into the detection container 22 through the introduction pipe 23, and are humidified air and non-humidified air in the detection container 22. Are mixed to form an averaged state. The dew-point temperature detector (humidifying sensor) 21 detects the humidity of the air in the averaged state, and the dew-point temperature controller 16 adjusts the humidity based on the detected value. Since the operation of the steam humidifier 7 is controlled by adjusting the humidification steam control valve 18 so as to be a predetermined value, the detection of the humidified humidity (dew point temperature) on the downstream side of the steam humidifier 7 is performed by the conventional detector. Inspection by 15 Greatly improve the accuracy in comparison with.
[0023]
Further, the dew point temperature detector (humidification sensor) 21 is mounted in the detection container 22, and can detect the humidity in the place where the humidified air and the non-humidified air are mixed and averaged. Therefore, even if the dew point temperature detector (humidifying sensor) 21 is short, it can be detected reliably.
In addition, the dew point temperature detector (humidifying sensor) 21 can be replaced without closing the air conditioner 20 by closing the flow control valve 26 to reduce dust contamination.
[0024]
Further, in order to improve the detection accuracy of the dew point temperature detector (humidifying sensor) 21, there is no possibility of excessive humidification that causes a performance failure of the chemical filter 8, the medium performance filter 9, and the HEPA filter 10 at the subsequent stage.
Further, in the present embodiment, the humidified air and the non-humidified air are taken in by utilizing the differential pressure, so that it is not necessary to provide a separate power supply for taking in the air to be detected. Further, since the detected air and water are returned into the air conditioner 20, a container for collecting the air and water is not required.
[0025]
In addition, in the said embodiment, similarly to the conventional air conditioner 1 shown in FIG.3, FIG.4, in the housing | casing 2 provided with the outside air inlet 3 and the process air outlet 4, from the outside air inlet 3, The pre-filter 5, the steam coil 6, the steam humidifier 7, the chemical filter 8, the medium performance filter 9, the HEPA filter 10, the cold water coil 11, the steam coil 12, the steam humidifier 13, and the blower 14 are directed toward the air outlet 4. Although the case where the present invention is applied to the air conditioners installed in order has been described, the device configuration in the housing 2 is arbitrary.
[0026]
Further, in the above embodiment, the case where the steam humidifier 7 is used as an example of the humidifier has been described. As described above, there is no particular limitation as long as it can be applied to humidification.
In the above embodiment, the case where the dew point temperature detector (humidifying sensor) 21 is used has been described. However, the detector may be a dry bulb thermometer, a wet bulb meter, or a related humidity sensor.
[0027]
【The invention's effect】
As described above, according to the present invention, the detection values of the detector provided immediately after the humidifier can be made uniform.
[Brief description of the drawings]
FIG. 1 is a side view showing the inside of an air conditioner according to an embodiment of the present invention.
FIG. 2 is a plan view showing the inside of the air conditioner of FIG.
FIG. 3 is a side view showing the inside of a conventional air conditioner.
FIG. 4 is a plan view showing the inside of the air conditioner of FIG.
[Explanation of symbols]
2 Housing 3 Outside air inlet 4 Process air outlet 5 Pre-filter 5
6 Steam Coil 7 Steam Humidifier 7a Upper Steam Humidifier 7b Lower Steam Humidifier 8 Chemical Filter 9 Medium Performance Filter 10 HEPA Filter 11 Cold Water Coil 12 Steam Coil 13 Steam Humidifier 14 Blower 20 Air Conditioner 21 Dew Point Temperature Detector (Humidification sensor)
22 Detection container 23 Inlet tube 24 Sampling hopper 24a Upper sampling hopper 24b Lower sampling hopper 24b
25 Outlet pipe 26 Flow control valve 30 Space

Claims (4)

An air conditioner comprising a humidifier and a detector, wherein the temperature or the humidity of the air humidified by the humidifier is measured by the detector, and the operation of the humidifier is controlled.
A plurality of sampling hoppers arranged downstream of the humidifier,
An introduction pipe to which the plurality of sampling hoppers are attached,
A detection container to which the detector is attached while attaching the introduction pipe,
An outlet pipe that connects a bottom side of the detection container and a downstream space of a device located downstream of the humidifier,
The detection container introduces air downstream of the humidifier through the introduction pipe by a differential pressure between the downstream side of the humidifier and the downstream space of the device, and the device through the discharge tube. An air conditioner, wherein the air conditioner is led to a downstream space of the air conditioner. The air conditioner according to claim 1,
The air conditioner, wherein the plurality of sampling hoppers are arranged at predetermined intervals with respect to the humidifier. The air conditioner according to claim 1,
The air conditioner, wherein the humidifier is a steam humidifier, a water humidifier, or a vaporization humidifier. The air conditioner according to claim 1,
The air conditioner, wherein the detector is a dew point temperature detector, a dry bulb thermometer, a wet bulb meter, and a related humidity sensor.

Images