JP2009014226A - Air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system capable of stably controlling temperature and humidity, and capable of not only reducing refrigerator capacity and saving energy, but also reducing costs and saving a space. <P>SOLUTION: A plurality of water circulation-type cooling/heating coils and heating coils are disposed in a chamber having an air intake port and an air supply port, a cold water supply line from a refrigerating machine and a returned cold water supply line for supplying a part of returned cold water returned to the refrigerating machine, are connected with the cooling/heating coil of the most downstream side, and the cold water or the returned cold water discharged from the cooling/heating coil of the most downstream side is successively supplied to the cooling/heating coils disposed at an upstream side. Flat-shaped vaporization type humidifier materials are respectively disposed on top faces of the plurality of cooling/heating coils and heating coils, and drippage is circulated and supplied to the cooling/heating coils and heating coils from water tanks disposed at lower portions of the plurality of cooling/heating coils and heating coils from their upper parts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning system that adjusts the temperature and humidity of air to be processed, and in particular, realizes stable temperature and humidity control, reduction of refrigerator capacity and energy saving, and eliminates the need for a dedicated vaporizing humidification film. The present invention relates to an air conditioning system that has been improved to realize cost reduction and space saving.

  In electronics and precision machinery factories, food storage warehouses, laboratory animal breeding rooms, biological clean rooms, etc., it is necessary to maintain a constant indoor environment such as temperature and humidity. An air conditioning system that can be used is used.

  As such an air conditioning system, there exists a thing as shown to patent document 1 or patent document 2, for example. That is, since the invention described in Patent Document 1 or Patent Document 2 uses the cooling capacity of the outside air in winter, it is introduced into the room just by slightly raising the temperature of the outside air, and is humidified indoors. It handles the cooling load.

  However, in the invention described in Patent Document 1 or Patent Document 2, it is necessary to make the distribution of the outside air supplied to the room uniform and to install a water humidifier in a place corresponding to the distribution. There was a problem that the construction cost increased. In addition, there are problems such as dispersion of water in the room, accidents due to this, installation space required, and uniform temperature and humidity.

Therefore, in order to solve the above problems, the present applicant has filed an application for an air conditioning system as shown in Patent Document 3. In the invention described in Patent Document 3, a cold water supply line and a return cold water supply line are connected to the cooling and heating coil, and a hot water supply line is connected to the heating coil, and the humidity of the processing air is set to a desired set humidity. As such, when the amount of water supplied from the cold water supply line or the return cold water supply line to the cooling and heating coil is controlled and the humidification amount is insufficient, the hot water supplied from the hot water supply line to the heating coil is configured. It is configured to control the amount.
JP 2002-156137 A JP 2002-156148 A JP 2006-177567 A

  However, in recent years, demands for further energy saving, cost reduction and space saving than the invention described in Patent Document 3 have increased, and molecular contaminant (AMC) removal and humidification can be realized in an integrated manner. The development of an air conditioning system that can be used was eagerly desired.

  The present invention has been proposed to solve the above-described problems of the prior art, and its purpose is not only stable temperature / humidity control, reduction of refrigerator capacity and energy saving, but also cost reduction. Another object of the present invention is to provide an air conditioning system that can also save space.

  In order to achieve the above object, according to the first aspect of the present invention, a plurality of water circulation type cooling and heating coils and a heating coil are arranged in a chamber having an inlet and an inlet. An air conditioner and a refrigerator that cools the chilled water that is circulated and supplied to the cooling and heating coil, and each of the upper surfaces of the cooling and heating coil and the heating coil has a planar water absorption Or a hydrophilic material is arrange | positioned and dripping water is circulated and supplied from the water tank arrange | positioned under the said cooling and heating coil and a heating coil to each of the said cooling and heating coil and a heating coil from the upper direction. It is comprised so that it may be comprised.

  In the invention according to claim 1 having the above-described configuration, a plurality of water circulation type cooling and heating coils and heating coils can be used as a water film unit. There is no need to provide a humidifying film. As a result, it is possible to reduce costs and reduce installation space by eliminating the need for a vaporizing humidification film.

  According to a second aspect of the present invention, there is provided an air conditioner in which a plurality of water circulation type cooling and heating coils and a heating coil are disposed in a chamber having an intake port and an air supply port, and the cooling unit. An air conditioning system including a refrigerator for cooling cold water circulated and supplied to a heating coil, wherein the cooling / heating coil on the most downstream side of the plurality of cooling / heating coils includes cold water from the refrigerator And a cold water supply line for supplying a part of the cold water to be returned to the refrigerator after being used for cooling in other parts of the same piping system, and the most downstream side The cooling water discharged from the cooling and heating coil or the return cold water is configured so as to be sequentially supplied to the cooling and heating coil installed on the upstream side, and on the upper surfaces of the cooling and heating coil and the heating coil, Flat water absorption or A water-based material is disposed, and dripping water is circulated and supplied from above to each of the cooling / heating coil and the heating coil from a water tank disposed below the cooling / heating coil and the heating coil. It is characterized by being comprised.

  In the invention according to claim 2 having the above-described configuration, a plurality of water circulation type cooling and heating coils and heating coils can be used as a water film unit. It is not necessary to provide a humidifying film, and the cost can be reduced and the installation space can be reduced by eliminating the need for a vaporizing humidifying film.

  Furthermore, since it is configured to control the amount of water supplied to the cooling and heating coil from the cold water supply line or the return cold water supply line so that the temperature of the processing air by the air conditioner becomes a desired set temperature, in winter, Is heated by a cooling and heating coil using a return chilled water supply line, and is cooled by a cooling and heating coil using a chilled water supply line in summer, so that an excellent energy saving effect can be obtained. it can.

  A third aspect of the present invention is the air conditioning system according to the first or second aspect, further comprising a vaporizing humidifier disposed downstream of the heating coil. .

  In invention of Claim 3 which has the above structures, humidification capability can further be improved by having arrange | positioned the vaporization type humidifier further downstream of the heating coil. Also, in the winter, when the return cold water supply line is used for heating by the cooling and heating coil, the temperature of the returned return cold water becomes lower, reducing the load on the refrigerator and increasing the energy saving amount. To do.

  A fourth aspect of the present invention is the air conditioning system according to any one of the first to third aspects, wherein the amount of cooling water supplied to the cooling and heating coil on the most downstream side and the heating adjustment by the heating coil are adjusted. The control is based on the detection value of a dew point sensor provided at the outlet of the air supply port.

  In the invention according to claim 4 having the above-described configuration, appropriate temperature adjustment can be performed based on the detection value of the dew point sensor provided at the outlet of the air supply port.

According to a fifth aspect of the present invention, in the air conditioning system according to any one of the first to third aspects, a reheating coil is further disposed downstream of the heating coil. Is.
In the invention according to claim 5 having the above-described configuration, the supply air can be heated to a desired temperature when the indoor load is small.

  According to a sixth aspect of the present invention, in the air conditioning system of the fifth aspect, a hot water supply line is connected to the reheating coil so that the humidity of the processing air by the air conditioner becomes a desired set humidity. The chilled water supply is configured so as to control the amount of water supplied to the cooling and heating coil from the chilled water supply line or the return chilled water supply line, and the temperature of the processing air by the air conditioner becomes a desired set temperature. It is configured to control the amount of water supplied from the line to the cooling and heating coil and the amount of water supplied from the hot water supply line to the reheating coil.

  In the invention according to claim 6 having the above-described configuration, the humidity of the processing air by the air conditioner becomes a desired set humidity, and the temperature of the processing air becomes a desired set temperature. More accurate temperature and humidity adjustment is possible.

  According to a seventh aspect of the present invention, in the air conditioning system according to any one of the first to sixth aspects, the water tank is partitioned corresponding to each of the plurality of cooling and heating coils and the heating coils. A communication hole is formed between adjacent water tanks.

  In invention of Claim 7 which has the above structures, the dripping water supplied to several cooling and heating coils and a heating coil can be circulated efficiently.

  The invention according to claim 8 is the air conditioning system according to any one of claims 1 to 7, wherein the water-absorbing or hydrophilic material is a vaporizing humidifier material. It is.

  The invention according to claim 9 is the air conditioning system according to any one of claims 1 to 7, wherein the water-absorbing or hydrophilic material is a vaporizing humidifier unit. Is.

  The inventions according to claims 8 and 9 as described above specifically define the water-absorbing or hydrophilic material disposed on the upper surfaces of the cooling and heating coil and the heating coil, respectively.

  According to the present invention, it is possible to provide an air conditioning system that enables not only stable temperature and humidity control, reduction of refrigerator capacity and energy saving, but also cost reduction and space saving.

  Hereinafter, an embodiment (hereinafter referred to as an embodiment) according to an air conditioning system of the present invention will be specifically described with reference to the drawings.

(1) First Embodiment (1-1) Configuration FIG. 1 is a schematic diagram showing a configuration of a first embodiment of an air conditioning system according to the present invention.
That is, inside the housing (not shown) of the air conditioner constituting the air conditioning system of this embodiment, from the air intake side, the prefilter 1, the medium performance filter 2, the spray 3, the first cooling and heating coil 4, the second cooling and heating coil 5, the third cooling and heating coil 6, the heating coil 7, the vaporizing humidifier 8, the blower 9 for discharging the processing air to the outside of the housing, and the processing air supply port, A temperature and humidity sensor 10 is sequentially arranged.

  Further, a vaporizing humidifier material 20 formed in a flat plate shape is disposed in contact with the upper surfaces of the first to third cooling and heating coils 4 to 6 and the heating coil 7, which will be described later. It is comprised so that the dripping water supplied to a coil fin upper part via a water supply line can be uniformly supplied to the whole coil fin.

  Of the three cooling and heating coils, a third cooling and heating coil 6 installed on the most downstream side is connected to a cold water supply line 21 for supplying cold water sent from a refrigerator (not shown). At the same time, in the same piping system, it is used for cooling in other parts and the temperature rises and returns to the refrigerator (for example, a dry coil provided for sensible heat treatment in a clean room such as semiconductor manufacturing to which conditioned air is supplied) A return cold water supply line 22 is connected to supply a part of the return cold water from the third cooling and heating coil 6.

  The cold water supply line 21 is provided with a first flow rate adjustment valve 23, and the return cold water supply line 22 is provided with a second flow rate adjustment valve 24 to supply the third cooling and heating coil 6. It is comprised so that the flow volume of the cold water to be adjusted can be adjusted.

  In addition, the cold water or the return cold water discharged from the third cooling / heating coil 6 has a third cooling / heating coil 6 → second cooling / heating coil 5 → The chilled water or the return chilled water discharged from the first cooling / heating coil 4 is returned to the refrigerator by the chilled water / return chilled water return line 25. Has been.

  A water tank 11 is disposed below the first to third cooling and heating coils 4 to 6, the heating coil 7, and the vaporizing humidifier 8. The inside of the water tank 11 is the first cooling and heating coil. A first water tank 11a located below the coil 4, a second water tank 11b located below the second cooling and heating coil 5, the third cooling and heating coil 6, the heating coil 7, and vaporization It is divided into a third water tank 11 c located at the lower part of the type humidifier 8. And between the 1st water tank 11a and the 2nd water tank 11b, the 1st communicating hole 12a is provided, and between the 2nd water tank 11b and the 3rd water tank 11c, it is 2nd. The communication hole 12b is provided.

  In addition, the reason for dividing the water tank 11 into the first water tank 11a to the third water tank 11c as described above is that the concentration difference in each water tank is increased by dividing the water tank, and countercurrent treatment is performed. This is because the molecular contaminant (AMC) can be effectively removed.

  The third water tank 11c is connected with a pure water supply line 30 for supplying pure water into the water tank 11c. The third cooling / heating coil 6, the heating coil 7 and the vaporizing type are also connected to the third water tank 11c. A first drip water supply line 13 for supplying drip water is provided above the humidifier 8. The third water tank 11c is provided with a second drip water supply line 14 for supplying drip water above the second cooling and heating coil 5. The first dropped water supply line 13 is provided with a first pump P1, and the second dropped water supply line 14 is provided with a second pump P2.

  Further, the second water tank 11b is provided with a third drip water supply line 15 for supplying drip water above the first cooling and heating coil 4, and this third drip water supply line. 15, a third pump P3 is provided. And by these dripping water supply lines 13-15, dripping water is circulated and supplied to each of the 1st-3rd cooling and heating coils 4-6 and the heating coil 7, and wets each cooling and heating coil and heating coil. It is comprised so that it can be set as a wall (structure which forms a water film).

  Further, the first water tank 11a has a fourth pump P4 for supplying pure water in the water tank to the spray 3 provided for spraying pure water onto the first cooling and heating coil 4. A pure water supply line 16 is provided, and a first drain line 17 is branched from the pure water supply line 16. The first water tank 11a is provided with a second drain line 18 so that the water level in the first water tank 11a can be kept constant. The second drain line 18 is connected to the first drain line 17 via a switching valve 19 provided in the first drain line 17.

  On the other hand, a hot water supply line 26 is connected to the heating coil 7, and a third flow rate adjusting valve 27 is provided in the hot water supply line 26. Further, the hot water discharged from the heating coil 7 is configured to be returned to a predetermined heating source by the hot water discharge line 28. As the heat source, cooling water for a refrigerator, heat generated from production equipment, a boiler, or the like is used.

  In addition, the vaporization type humidifier raw material 20 formed in the said flat form is comprised from the water absorption or hydrophilic vaporization type humidification raw material. In addition, pure water is used as the water supply for humidification, and constant water replenishment and drainage are carried out to remove water-soluble gas components that cause problems in clean rooms such as odors and semiconductor manufacturing even in the summer when dehumidification and cooling are performed. In order to do this, water is supplied to the vaporizing humidifier.

  Moreover, as said 1st-3rd cooling and heating coils 4-6 and the heating coil 7 made to function as a wet wall by supplying dripping water as mentioned above, a normal coil (copper, aluminum, etc.) is used. Although it can also be used, it is more preferable to use what gave a hydrophilic process. As a method for this hydrophilic treatment, a known hydrophilic paint is applied, or after manufacturing a cooling coil, a coil fin portion having a large surface area is immersed in a corrosive solution (etching solution) for a certain period of time, washed and then dried. The method can be used.

  Further, in order to remove various molecular contaminants (AMC), it is necessary to maintain a certain level of cleanliness (= purity) on the water absorption side (in this embodiment, dripping water). The pure water supply line 30 needs to continue to supply pure water as appropriate.

  The amount of pure water to be supplied is determined by measuring the pH or conductivity or both in the middle of the first water tank 11a or the drainage line, and based on the measured value, a valve ( It is preferable to control the supply amount of pure water by adjusting the opening degree (not shown).

  Alternatively, a method is used in which the amount of makeup water is determined at each time according to the required amount of humidification, such as L / G = 0.01 for the dehumidification time and L / G = 0.02 for the humidification time. May be. In this case, the opening degree of a valve (not shown) provided in the pure water supply line 30 can be manually set at each time, so that the configuration becomes simple.

  In addition, as a vaporization type humidifier raw material used by this invention, the material which has a porosity of 40% or more, for example, the vaporization type humidifier raw material by Wet Master Co., Ltd. can be used.

(1-2) Action The action of the air conditioning system of the present embodiment having the above-described configuration is as follows. The temperature and humidity of the air conditioner outlet is 12 ° C., 90%, cold water is 7 ° C., return cold water is 18 ° C., and hot water is used. 34 ° C., and referring to the air diagrams shown in FIGS. 3, 5, and 7, winter −1 (for example, outdoor wet bulb temperature = severe cold season where WB is less than 0 ° C.), winter −2 ( The explanation will be divided into general winter humidification periods) and general dehumidification / cooling periods (mainly summer).

  In addition, AG shown in FIG.3, FIG.5, FIG.7 respond | corresponds to the state of the air in the position of AG shown in FIG. Specific values such as temperature and humidity are examples, and the present invention is not limited to these numerical values. Further, the temperature rise by the fan and the relative humidity drop caused by this are not considered here for the sake of easy understanding.

(1-2-1) Winter-1-see FIGS. 2 and 3 When the outside air is very low temperature (for example, when WB is lower than 0 ° C.), the first installed on the most upstream side When the upstream side (point B) of the cooling and heating coil 4 is 0 ° C. or lower, as shown in FIG. 2, the fourth pump P4 is stopped and the water supply to the spray 3 is stopped.

  Further, by operating the blower 9 and the first pump P1 to the third pump P3, the first cooling and heating coil 4 to the third cooling and heating coil 6 and the heating coil 7 are arranged on the upper surface. While supplying pure water to the vaporizing humidifier material 20 provided, the valve 24 of the return cold water supply line 22 connected to the third cooling and heating coil 6 is set to “open” and connected to the heating coil 7. The valve 27 of the hot water supply line 26 is opened. In this state, the outside air (for example, −2 ° C., 60% RH) flowing from the air intake port of the housing is processed.

  The air that has flowed in is filtered through the filters 1 and 2 and then passes through the first cooling and heating coil 4 circulated and supplied with return cold water (18 ° C.) (point C, 9.3 ° C.). Then, after passing through the second cooling and heating coil 5 (D point, 12.9 ° C.), it is introduced into the third cooling and heating coil 6. Then, after passing through the third cooling and heating coil 6 (E point, 14.4 ° C.), it is heated by the heating coil 7 (F point, 14.2 ° C.). The air heated by the heating coil 7 is supplied to the room after being humidified by the vaporizing humidifier 8 (G point, 12.0 ° C., 90% RH).

  Note that the temperature decreases before and after the heating coil 7 (from point E to point F) because the heating by the heating coil and the heating by the heating coil are simultaneously performed in the coil portion of the heating coil 7. This is because the heating coil 7 acts on cooling when the amount is small.

(1-2-2) Winter-2-see FIGS. 4 and 5 In the case of a general winter humidification period (for example, WB is 0 ° C. or higher), as shown in FIG. Water is supplied to the spray 3 without stopping P4. Further, by operating the blower 9 and the first pump P1 to the third pump P3, the first cooling and heating coil 4 to the third cooling and heating coil 6 and the heating coil 7 are arranged on the upper surface. Pure water is supplied to the vaporizing humidifier material 20 provided, and the valve 24 of the return cold water supply line 22 connected to the third cooling and heating coil 6 is opened. In this case, the valve 27 of the hot water supply line 26 connected to the heating coil 7 is “closed”.

  In this state, outside air (for example, 6 ° C., 40% RH) flowing from the air intake port of the housing is introduced into the first cooling / heating coil 4 after dust is filtered through the filters 1 and 2. Before spraying, it is humidified by spray 3 (B point, 3 ° C., 80% RH). Thereafter, after passing through the first cooling and heating coil 4 circulated and supplied with the return cold water (18 ° C.) (C point, 11.6 ° C.), it passes through the second cooling and heating coil 5 (D point, 14. 1 ° C.) and introduced into the third cooling and heating coil 6. After passing through the third cooling and heating coil 6 and the heating coil 7 (point E, 15.2 ° C./F point, 13.0 ° C.), after being humidified by the vaporizing humidifier 8 (point G) 12.0 ° C., 90% RH).

(1-2-3) Summer… See FIGS. 6 and 7 When the air needs to be dehumidified in summer or the like, as shown in FIG. 6, water is supplied to the spray 3 without stopping the fourth pump P4. I do. Further, by operating the blower 9 and the first pump P1 to the third pump P3, the first cooling and heating coil 4 to the third cooling and heating coil 6 and the heating coil 7 are arranged on the upper surface. Pure water is supplied to the vaporizing humidifier material 20 provided, and the valve 23 of the cold water supply line 21 connected to the third cooling and heating coil 6 is opened.

  In this state, outside air (for example, 33 ° C., 60% RH) flowing in from the air intake port of the housing is introduced into the first cooling and heating coil 4 after dust is filtered through the filters 1 and 2. Before spraying, it is humidified by spray 3 (point B, 28 ° C., 90%). Thereafter, the water is cooled by the first cooling and heating coil 4 circulated and supplied with cold water (7 ° C.) (C point, 15.2 ° C.), and further cooled by the second and third cooling and heating coils 5 and 6. (C to E), and humidified by the vaporizing humidifier 8 (F · G point, 10.5 ° C., 100% RH) and then supplied indoors.

(1-3) Test Example In an experimental machine manufactured with a coil unit having dripping water and a vaporizing humidifier as the basic components, which are the main components of the air conditioning system of the present embodiment, for each of winter and summer, AMC's Removal performance was measured. The outline of the experimental machine and the measurement are as follows. The measurement results are shown in Table 1 (winter) and Table 2 (summer).

(Outline of experimental machine and measurement)
Configuration of experimental machine: pre-filter, medium performance filter, heating coil (no dripping), cooling coil (with dripping), vaporizing humidifier, heating coil (no dripping), blower Experimental machine start date: June 22, 2004 Day (24 hours continuous operation thereafter)
Air volume: 3500m ³ / h
Coil surface wind speed: 2.7 m / s
Pure water replenishment water volume: 0.3 L / min (summer), 0.5 L / min (winter), including humidification in winter Measurement point: Cooling coil + front and back of vaporization humidifier Measurement method: Liquid collection (suction flow rate) : 2.0 L / min, suction time: 24 hours)-ion chromatography

(As a result of the measurement)
As can be seen from Tables 1 and 2 below, it was confirmed that both winter and summer have good removal performance.

  Note that the gas-liquid contact area greatly affects the AMC removal performance, and the area of the water film formed by the coil portion depends on the number of coil rows. Since there are 12 rows of cooling coils of this experimental machine, when compared with the coil shown in FIG. 1, it corresponds to the first cooling and heating coil (6 rows) and the second cooling and heating coil (6 rows). .

  On the other hand, in the present embodiment, in addition to the first and second cooling and heating coils, the third cooling and heating coil and the heating coil are further provided, so that the gas-liquid contact is compared with the above experimental machine. The area becomes even larger. Therefore, considering the measurement results in Tables 1 and 2, it is presumed that the AMC removal performance in the present embodiment is further improved.

(1-4) Effect As described above, according to the present embodiment, the vaporizing humidifier formed in a flat plate shape on the upper surfaces of the first to third cooling and heating coils 4 to 6 and the heating coil 7. The first to third cooling and heating coils 4 to 6 and the heating coil 7 are used as a water film unit by disposing the material 20 and supplying dripping water from the top of the vaporizing humidifier material 20. Therefore, it is not necessary to provide a dedicated vaporizing humidifying film as in the prior art. As a result, it is possible to reduce costs and reduce installation space by eliminating the need for a vaporizing humidification film.

  In addition, the spray 3 is disposed upstream of the outside air intake, and the first cooling and heating coil 4 is humidified by the spray 3, whereby the coil can be prevented from being dried and a cleaning effect can be obtained.

  In the present embodiment, the water tank 11 is divided into the first water tank 11a to the third water tank 11c to increase the concentration difference in each water tank so that countercurrent processing can be performed. It is possible to effectively remove the pollutant (AMC).

  Furthermore, in the present embodiment, the following effects can be obtained by reducing the number of coil arrays. For example, in the case of indoor conditions of 23 ° C., 45% RH, outside air conditions (winter season) of −3 ° C., about 60% RH, and clean bench return cold water temperature of 18 ° C., the total number of columns in the cooling / dehumidification / heating coil is conventionally However, in this embodiment, the number of coil rows may be 12 to 14 rows under the above conditions, so that the pressure loss on the air side can be reduced.

(1-5) Modified Example In the present embodiment, as shown in FIG. 1, the water tank 11 is divided into three parts, ie, a first water tank 11a to a third water tank 11c, but as shown in FIG. In addition, the water tank may be divided for each unit to be dripped, and the water distribution of each unit may be used as the supply water for the upstream unit sequentially. That is, you may divide the water tank 11 into five, the 1st water tank 11a-the 5th water tank 11e.

  Moreover, in this embodiment, as shown in FIG. 1, although it is comprised so that dripping water may be always supplied to the heating coil 7 via the 1st dripping water supply line 13, FIG. As shown in the figure, the first dripping water supply line 13 is branched, and a valve 41 is provided in the middle of the pipe 40 for supplying the dripping water to the heating coil 7, and this valve 41 is normally "closed" It may be “open” only at the maximum winter load. With such a configuration, the pump power can be reduced.

(2) Second Embodiment This embodiment is a modification of the first embodiment, and a reheating coil is installed between the vaporizing humidifier 8 and the blower 9 as shown in FIG. is there.

(2-1) Configuration FIG. 10 is a schematic diagram showing the configuration of the second embodiment of the air conditioning system according to the present invention. That is, inside the housing (not shown) of the air conditioner constituting the air conditioning system of this embodiment, from the air intake side, the prefilter 1, the medium performance filter 2, the spray 3, the first cooling and heating coil 4, second cooling and heating coil 5, third cooling and heating coil 6, heating coil 7, vaporizing humidifier 8, first reheating coil 50, second reheating coil 51, and housing process air A temperature and humidity sensor 10 is sequentially arranged at the blower 9 that discharges to the outside and the supply port of the processing air.

  The first reheating coil 50 is connected to a reheating coil side return chilled water supply line 52 branched from the return chilled water supply line 22 connected to the third cooling and heating coil 6, and The return cold water discharged from the first reheating coil 50 is configured to be returned to the refrigerator by the reheating coil side return cold water return line 53. The reheat coil side return chilled water supply line 52 is provided with a fourth flow rate adjusting valve 54 so that the flow rate of the return chilled water supplied to the first reheat coil 50 can be adjusted. .

  The second reheating coil 51 is connected to a reheating coil side hot water supply line 55 branched from the hot water supply line 26 connected to the heating coil 7, and the second reheating coil 51. The hot water discharged from is returned to a predetermined heating source by the reheating coil side hot water discharge line 56. The reheat coil side hot water supply line 55 is provided with a fifth flow rate adjustment valve 57 so that the flow rate of the hot water supplied to the second reheat coil 51 can be adjusted.

(2-2) Action / Effect In the air conditioning system of this embodiment having the above-described configuration, in addition to the same action / effect as in the first embodiment, the desired supply air is desired when the indoor load is small. Can be heated to

(3) Other Embodiments The present invention is not limited to the above-described embodiments, and the following modifications can be considered. For example, the fan and the filter are not essential constituent elements of the present invention, and the presence or absence thereof is not particularly limited. Further, depending on the outside air, indoor temperature and humidity conditions, the temperature and stability of the return cold water, a reheating coil using the return cold water and the hot water may be unnecessary.

  In the above embodiment, the vaporizing humidifier material 20 formed in a flat plate shape is disposed on the upper surfaces of the first to third cooling and heating coils 4 to 6 and the heating coil 7. The type humidification unit itself may be arranged on the upper part of each coil, and supply water or circulating water dropped on the coil upper part may be dispersed.

It is a mimetic diagram showing composition of a 1st embodiment of an air-conditioning system concerning the present invention. It is a schematic diagram which shows the driving | running state in the severe winter season of the air conditioning system of 1st Embodiment. It is an air line figure (winter season -1) explaining the effect | action in the severe winter season of the air conditioning system of 1st Embodiment. It is a schematic diagram which shows the driving | running state in the winter of the air conditioning system of 1st Embodiment. It is an air line figure (winter season-2) explaining the effect | action in the winter season of the air conditioning system of 1st Embodiment. It is a schematic diagram which shows the driving | running state in the summer of the air conditioning system of 1st Embodiment. It is an air line figure (summer) explaining the effect | action in the summer of the air conditioning system of 1st Embodiment. It is a schematic diagram which shows the structure of the modification of 1st Embodiment of the air conditioning system which concerns on this invention. It is a schematic diagram which shows the structure of the modification of 1st Embodiment of the air conditioning system which concerns on this invention. It is a schematic diagram which shows the structure of 2nd Embodiment of the air conditioning system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pre-filter 2 ... Medium performance filter 3 ... Spray 4 ... 1st cooling and heating coil 5 ... 2nd cooling and heating coil 6 ... 3rd cooling and heating coil 7 ... Heating coil 8 ... Evaporative humidifier 9 ... Blower 10 ... Temperature and humidity sensor 20 ... Vaporizing humidifier material 21 ... Cold water supply line 22 ... Return cold water supply line 25 ... Cold water or return cold water return line 26 ... Hot water supply line 30 ... Pure water supply line 50 ... First Reheating coil 51 ... second reheating coil

Claims (9)

An air conditioner in which a plurality of water circulation type cooling and heating coils and a heating coil are disposed in a chamber having an intake port and an air supply port, and cold water circulated and supplied to the cooling and heating coil An air conditioning system with a refrigerator to cool,
On each upper surface of the cooling and heating coil and the heating coil, a planar water-absorbing or hydrophilic material is disposed,
The cooling and heating coil and a water tank disposed in the lower part of the heating coil are configured such that dripping water is circulated and supplied from above to each of the cooling and heating coil and the heating coil. Air conditioning system. An air conditioner in which a plurality of water circulation type cooling and heating coils and a heating coil are disposed in a chamber having an intake port and an air supply port, and cold water circulated and supplied to the cooling and heating coil An air conditioning system with a refrigerator to cool,
Among the plurality of cooling and heating coils, the cooling and heating coil on the most downstream side is used for cooling in a cold water supply line for supplying cold water from the refrigerator and in other parts of the same piping system A return cold water supply line for supplying a part of the return cold water returned to the refrigerator is connected,
Cold water or return cold water discharged from the cooling and heating coil on the most downstream side is configured to be sequentially supplied to the cooling and heating coil installed on the upstream side,
On each upper surface of the cooling and heating coil and the heating coil, a planar water-absorbing or hydrophilic material is disposed,
The cooling and heating coil and a water tank disposed in the lower part of the heating coil are configured such that dripping water is circulated and supplied from above to each of the cooling and heating coil and the heating coil. Air conditioning system.   The air conditioning system according to claim 1 or 2, wherein a vaporizing humidifier is further disposed downstream of the heating coil.   The amount of cooling water supplied to the cooling and heating coil on the most downstream side and the heating adjustment by the heating coil are configured to be controlled based on the detection value of a dew point sensor provided at the outlet of the air supply port. The air conditioning system according to any one of claims 1 to 3, wherein the air conditioning system is provided.   The air conditioning system according to any one of claims 1 to 3, wherein a reheating coil is further disposed downstream of the heating coil. A hot water supply line is connected to the reheating coil,
While configured to control the amount of water supplied to the cooling and heating coil from the cold water supply line or return cold water supply line so that the humidity of the processing air by the air conditioner becomes a desired set humidity,
The amount of water supplied from the cold water supply line to the cooling and heating coil and the amount of water supplied from the hot water supply line to the reheating coil are controlled so that the temperature of the processing air by the air conditioner becomes a desired set temperature. The air conditioning system according to claim 5, wherein the air conditioning system is configured as described above.   The said water tank is divided | segmented corresponding to each of these cooling and heating coils, and a heating coil, and the communicating hole is formed between adjacent water tanks of Claim 1 thru | or 6 characterized by the above-mentioned. The air conditioning system according to any one of the above.   The air conditioning system according to any one of claims 1 to 7, wherein the water-absorbing or hydrophilic material is a vaporizing humidifier material.   The air conditioning system according to any one of claims 1 to 7, wherein the water-absorbing or hydrophilic material is a vaporizing humidification unit.