JP5768382B2 - Cooling system - Google Patents

Description

  The present invention relates to a cooling device, and more particularly to a cooling device that cools the internal atmosphere of a room in which an electronic device such as a server called a data center is arranged.

  Conventionally, the following is known as a cooling device for cooling the internal atmosphere of a room in which an electronic device such as a server called a so-called data center is arranged. That is, the apparatus includes a circulation unit that circulates the internal atmosphere of the target chamber between the inside and the outside of the target chamber, and a cooling unit that cools the internal atmosphere circulated by the circulation unit (for example, a patent). Reference 1).

  In such a cooling device, supply and return air are performed by circulating the internal atmosphere of the target chamber through the circulation means, and the circulating air volume is reduced by lowering the cooling temperature of the internal atmosphere by the cooling means. Further, in such a cooling device, the outside air is cooled by the cooling means as necessary and introduced into the target chamber.

JP 2002-61911 A

  By the way, in the cooling device as described above, the circulating air volume is reduced, but the cooling load by the cooling means is excessive, and as a result, it is difficult to reduce the power consumption.

  An object of this invention is to provide the cooling device which can aim at reduction of power consumption by reducing the cooling load of a cooling means in view of the said situation.

In order to achieve the above object, a cooling apparatus according to the present invention cools the internal atmosphere circulated by the circulation means for circulating the internal atmosphere of the target chamber between the inside and the outside of the target chamber. And a cooling device having a cooling means for adjusting the moisture adsorbent disposed in a predetermined sealed space and made of a moisture adsorbing material, and a temperature for adjusting the moisture adsorbent to a temperature suitable for moisture adsorption. In the circulation process of the internal atmosphere by the adjustment means, a first heat exchanger disposed in a reduced pressure atmosphere in which the moisture adsorbent is depressurized by adsorbing moisture in the sealed space, and the circulation means A pipe is connected to a second heat exchanger disposed at a location upstream of the location to be cooled by the cooling means, and enclosed between the first heat exchanger and the second heat exchanger. Circulated media And circulation means, a water supply means for supplying water to the surface of the first heat exchanger, and water discharge means to discharge the water adsorbed by heating the moisture adsorbent, the internal atmosphere by the circulation means In the circulation process, the moisture releasing means is disposed at a location downstream of the location from which the exhaust heat is acquired from the internal atmosphere, and cools the internal atmosphere passing through its surroundings by evaporating the supplied refrigerant. An evaporator, a compressor that sucks and compresses the refrigerant evaporated in the evaporator, and upstream of the location where the moisture release means acquires exhaust heat from the internal atmosphere in the circulation process of the internal atmosphere by the circulation means A radiator that is disposed at a location on the side and heats the internal atmosphere passing through its surroundings by dissipating the refrigerant supplied from the compressor, and a cooler that has passed through the radiator. The a expansion mechanism and a cooling heating means constituted by sequentially connecting by a refrigerant piping to be sent to the evaporator by adiabatic expansion, the medium circulation means, said first heat in the first heat exchanger A medium cooled by evaporation of water supplied to the surface of the exchanger is sent to the second heat exchanger, and heat exchange is performed between the internal atmosphere passing through the surroundings and the medium in the second heat exchanger. the internal atmosphere was cooled in the temperature control unit, using the obtained heat conducted outside air heat exchanger, while adjusting the temperature of the water adsorbent, the internal atmosphere is circulated by said circulating means It is characterized by cooling.

In addition , the cooling device according to the present invention includes a circulation unit that circulates the internal atmosphere of the target chamber between the inside and the outside of the target chamber, and a cooling unit that cools the internal atmosphere circulated by the circulation unit. A water adsorber disposed in a predetermined sealed space and made of a moisture adsorbing material, temperature adjusting means for adjusting the moisture adsorbent to a temperature suitable for moisture adsorption, and the sealing A first heat exchanger disposed in a reduced-pressure atmosphere that is depressurized by adsorbing moisture in the space, and a location where the cooling means cools in the circulation process of the internal atmosphere by the circulation means A second heat exchanger disposed at a location upstream of the first heat exchanger and connected by piping to circulate the sealed medium between the first heat exchanger and the second heat exchanger Medium circulating means; and 1 It is provided with a moisture supply means for supplying moisture to the surface of the heat exchanger and a moisture release means for releasing the moisture adsorbed by heating the moisture adsorbent, and the cooling means evaporates the supplied refrigerant. An evaporator that cools the internal atmosphere that passes through its surroundings, a compressor that sucks and compresses the refrigerant that has passed through the evaporator, and the moisture release means in the circulation process of the internal atmosphere by the circulation means An internal condenser which is disposed at a location upstream of a location where exhaust heat is acquired from the internal atmosphere, and heats the internal atmosphere passing through its surroundings by condensing the refrigerant supplied from the compressor; An external condenser that condenses the refrigerant condensed in the internal condenser by exchanging heat with the outside air, and adiabatic expansion of the internal condenser or the refrigerant that has passed through the internal condenser and the external condenser And an expansion mechanism that is sent out to the evaporator in sequence by a refrigerant pipe, and the medium circulation means is configured such that the water supplied to the surface of the first heat exchanger in the first heat exchanger The medium cooled by evaporation is sent to the second heat exchanger, and the internal atmosphere passing through the surroundings in the second heat exchanger exchanges heat with the medium to cool the internal atmosphere, and the temperature The adjusting means adjusts the temperature of the moisture adsorbent using heat obtained by exchanging heat with the outside air, and cools the internal atmosphere circulated by the circulating means.

Further, the present invention is the above cooling apparatus, wherein the moisture releasing means exchanges heat with the internal atmosphere that has passed through the target chamber to acquire exhaust heat, and uses the acquired exhaust heat to provide a moisture adsorbent to be heated. Is heated.

Moreover, the present invention is characterized in that, in the cooling device, the water supply means supplies the water released through the water release means to the first heat exchanger.

  According to the cooling device of the present invention, the temperature adjusting unit adjusts the moisture adsorbent disposed in the predetermined sealed space to a temperature suitable for moisture adsorption, and the medium circulating unit is configured to absorb moisture in the sealed space. A first heat exchanger disposed in a reduced pressure atmosphere in which the body is depressurized by adsorbing moisture, and a location upstream of the location where the cooling means cools in the circulation process of the internal atmosphere by the circulation means. The installed second heat exchanger is connected by piping, the medium enclosed between the first heat exchanger and the second heat exchanger is circulated, and the water supply means is the first heat exchanger. Moisture is supplied to the surface of the second heat exchanger, and the medium circulating means supplies the medium cooled by evaporation of the water supplied to the surface of the first heat exchanger in the first heat exchanger. The internal atmosphere that passes through the surroundings in the second heat exchanger Since the medium and cools the internal atmosphere by heat exchange, it is possible to reduce the cooling load of the cooling means, an effect that thereby it is possible to reduce power consumption.

FIG. 1 is a schematic diagram schematically showing a cooling device according to the first embodiment of the present invention. FIG. 2 is a schematic diagram schematically showing the cooling device according to the first embodiment of the present invention. FIG. 3 is a schematic diagram schematically showing the cooling device according to the first embodiment of the present invention. FIG. 4 is a schematic diagram schematically showing a cooling device according to the second embodiment of the present invention. FIG. 5 is a schematic diagram schematically showing a cooling device according to the second embodiment of the present invention. FIG. 6 is a schematic diagram schematically showing a cooling device according to the third embodiment of the present invention. FIG. 7 is a schematic diagram schematically showing a cooling device according to the third embodiment of the present invention. FIG. 8 is a schematic diagram schematically showing a cooling device according to the fourth embodiment of the present invention. FIG. 9 is a schematic diagram schematically showing a cooling device according to the fourth embodiment of the present invention. FIG. 10 is a schematic diagram schematically showing a cooling device according to the fifth embodiment of the present invention. FIG. 11 is a schematic diagram schematically showing a cooling device according to the fifth embodiment of the present invention.

  Hereinafter, preferred embodiments of a cooling device according to the present invention will be described in detail with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a schematic diagram schematically showing a cooling device according to the first embodiment of the present invention. The cooling device exemplified here cools the internal atmosphere of the target room 1 in which an electronic device K such as a server called a so-called data center is disposed, and includes a circulation unit (circulation means) 10 and a cooling unit. A unit (cooling means) 20, a first auxiliary cooling unit 30, a moisture adsorption unit 40, and a second auxiliary cooling unit (medium circulation means) 50 are provided.

  The circulation unit 10 includes an air passage 11 and a plurality of blower fans F1 to F4. The air passage 11 is formed inside the building having the target room 1, and communicates with the upper duct 11 a communicating with the suction port 1 a formed in the ceiling of the target room 1, and communicates with the upper duct 11 a. And a lower duct 11c communicating with the side duct 11b and communicating with the outlet 1b formed on the floor of the target chamber 1.

  A plurality (four in the illustrated example) of the blower fans F1 to F4 are provided, and each of them is driven when a drive command is given from a control means (not shown). Each of these blower fans F <b> 1 to F <b> 4 is disposed at a predetermined location of the air passage 11. In the present embodiment, it has been described that the circulation unit 10 includes a plurality of blower fans F1 to F4 as constituent elements. However, in the present invention, the blower fan constituting the circulation means (circulation unit 10) is: There is no need for a plurality, and a single number may be used.

  In such a circulation unit 10, when the blower fans F1 to F4 are driven by the drive command from the control means, the internal air (internal atmosphere) of the target chamber 1 is sucked from the suction port 1a. The air passage 11 (the upper duct 11a, the side duct 11b, and the lower duct 11c) passes through the air outlet 11b and is blown out into the target chamber 1. That is, the circulation unit 10 circulates the internal air of the target chamber 1 between the inside and the outside of the target chamber 1.

  The cooling unit 20 is a circuit in which an evaporator 21, a compressor 22, a condenser 23, and an expansion mechanism 24 are sequentially connected by a refrigerant pipe, and a refrigerant is sealed inside. The evaporator 21 is arrange | positioned in the location nearest to the lower duct 11c in the side duct 11b. In the vicinity of the evaporator 21, a blower fan (first blower fan F1) constituting the circulation unit 10 is disposed. The compressor 22 is driven when a drive command is given from the control means. When driven, the compressor 22 sucks and compresses the refrigerant that has passed through the evaporator 21 to bring it into a high-temperature and high-pressure state. The condenser 23 condenses the refrigerant compressed by the compressor 22. The condenser 23 is disposed together with the compressor 22 outside the air passage 11, that is, outside the building, and in the vicinity thereof, an outside air introduction fan FO for introducing outside air is disposed. The outside air introduction fan FO is driven when a drive command is given from the control means. The expansion mechanism 24 adiabatically expands the refrigerant condensed in the condenser 23 and sends it to the evaporator 21.

  In such a cooling unit 20, the refrigerant compressed by the compressor 22 is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. The refrigerant evaporated in the evaporator 21 is sucked into the compressor 22 and compressed again to circulate. That is, the cooling unit 20 cools the internal air circulated by the circulation unit 10.

  The first auxiliary cooling unit 30 is a circuit in which an external heat exchanger 31 and an internal heat exchanger 32 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The external heat exchanger 31 is disposed in the vicinity of the condenser 23 constituting the cooling unit 20. The internal heat exchanger 32 is disposed at a predetermined location in the side duct 11b, and a blower fan (second blower fan F2) constituting the circulation unit 10 is disposed in the vicinity thereof. The outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 are connected by piping, and the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 are connected by piping. A first pump 33 and a first on-off valve 34 are disposed in the middle of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32. The first pump 33 is driven by a drive command given from the control means and sends out the medium. The first opening / closing valve 34 is a valve body that can be opened and closed. When the opening command is given from the control means, the first opening / closing valve 34 opens and allows the passage of the medium. On the other hand, the first opening / closing valve 34 closes when the closing command is given. Thus, the passage of the medium is restricted.

  The moisture adsorption unit 40 is composed of a plurality (two in the illustrated example) of moisture adsorbers 41a and 41b. These moisture adsorbers 41a and 41b are cylindrical ones formed from a moisture adsorbing material such as silica gel or zeolite. These moisture adsorbers 41a and 41b are respectively disposed in the partitioned right chamber 3 and left chamber 4 in the sealed space 2 provided in a mode adjacent to the air passage 11. Here, openings are formed in the upper and lower portions of each chamber, and these openings can be opened and closed by the shutter mechanism 5. The shutter mechanism 5 opens to open a corresponding opening when an opening command is given from the control means, and closes to close a corresponding opening when a closing command is given. Is.

  A spirally wound medium passage 42a is formed in the hollow interior of the moisture adsorbent (first moisture adsorbent 41a) disposed in the right chamber 3, and one end of the medium passage 42a has a first A pipe connected to the first inlet / outlet 43c of the first four-way valve 43 is connected, and a pipe connected to the first inlet / outlet 44c of the second four-way valve 44 is connected to the other end of the medium passage 42a. . Thereby, the opening at one end of the medium passage 42a in the first moisture adsorbing body 41a communicates with the first inlet / outlet 43c of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the first entrance 44c.

  A spirally wound medium passage 42b is formed in the hollow interior of the moisture adsorbent (second moisture adsorbent 41b) disposed in the left chamber 4, and one end of the medium passage 42b has a first end. A pipe connected to the second inlet / outlet 43d of the one-way valve 43 is connected, and a pipe connected to the second inlet / outlet 44d of the second four-way valve 44 is connected to the other end of the medium passage 42b. . Accordingly, the opening at one end of the medium passage 42b in the second moisture adsorbing body 41b communicates with the second inlet / outlet 43d of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42b is second through the pipe. The four-way valve 44 communicates with the second inlet / outlet 44d.

  The first four-way valve 43 and the second four-way valve 44 will be described. The first four-way valve 43 is a valve body including one dedicated inlet 43a, one dedicated outlet 43b, and two outlets (first inlet 43c and second outlet 43d).

  The dedicated inlet 43 a is downstream of the branch point P1 of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 constituting the first auxiliary cooling unit 30, that is, downstream of the first pump 33. A pipe branching from a location upstream of the first on-off valve 34 is connected. A second on-off valve 45 is disposed in the middle of the piping. The second open / close valve 45 is a valve body that can be opened and closed. When the open command is given from the control means, the second open / close valve 45 opens and permits the passage of the medium, but closes when the close command is given. In this way, the passage of the medium is restricted.

  The dedicated outlet 43b is connected to a pipe connected to the inlet of the exhaust heat exchanger 46 disposed at a position closest to the upper duct 11a in the side duct 11b. Here, in the vicinity of the exhaust heat exchanger 46, a blower fan (third blower fan F3) constituting the circulation unit 10 is disposed.

  One of the two inlets and outlets 43c is connected to a pipe connected to one end of the medium passage 42a of the first moisture adsorbing body 41a as described above, and the other second inlet / outlet 43d is described above. In this way, a pipe connected to one end of the medium passage 42b of the second moisture adsorbing body 41b is connected.

  In the normal state, such a first four-way valve 43 communicates the dedicated inlet 43a and the first inlet / outlet 43c as shown in FIG. 1 and communicates the dedicated outlet 43b and the second inlet / outlet 43d, When a switching command is given from the control means, the dedicated inlet 43a and the second inlet / outlet 43d are communicated with each other and the dedicated outlet 43b and the first inlet / outlet 43c are communicated with each other (see FIG. 3).

  The second four-way valve 44 is a valve body including one dedicated inlet 44a, one dedicated outlet 44b, and two outlets (first inlet 44c and second outlet 44d).

  A pipe connected to the outlet of the exhaust heat exchanger 46 is connected to the dedicated inlet 44a. A second pump 47 is disposed in the middle of the piping. The second pump 47 is driven when a drive command is given from the control means, and sends out a medium such as water.

  The dedicated outlet 44 b is connected to a pipe connected to the inlet of the cooling heat exchanger 48 disposed above the right chamber 3 and the left chamber 4 in the sealed space 2. The pipe connected to the outlet of the cooling heat exchanger 48 is a confluence point in the middle of the pipe connecting the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 constituting the first auxiliary cooling unit 30. It joins P2.

  As described above, one of the two inlets / outlets 44c is connected to a pipe connected to the other end of the medium passage 42a of the first moisture adsorbent 41a, and the other second inlet / outlet 44d is connected to the above-described second inlet / outlet 44d. As described above, a pipe connected to the other end of the medium passage 42b of the second moisture adsorbent 41b is connected.

  In the normal state, such a second four-way valve 44 communicates the dedicated inlet 44a and the second inlet / outlet 44d as shown in FIG. 1 and communicates the dedicated outlet 44b and the first inlet / outlet 44c, When a switching command is given from the control means, the dedicated inlet 44a and the first inlet / outlet 44c are brought into communication with each other, and the dedicated outlet 44b and the second inlet / outlet 44d are communicated (see FIG. 3).

  The second auxiliary cooling unit 50 is a circuit in which a first heat exchanger 51 and a second heat exchanger 52 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first heat exchanger 51 is disposed below the right chamber 3 and the left chamber 4 in the sealed space 2. In the present embodiment, the first heat exchanger 51 is described as being disposed below the right chamber 3 and the left chamber 4, but in the present invention, the first heat exchanger 51 is provided. Is not necessarily disposed below the sealed space 2, but is preferably disposed in the lower region of the cooling heat exchanger 48.

  The second heat exchanger 52 is located at a predetermined location in the side duct 11b, that is, a location upstream of the evaporator 21 and downstream of the internal heat exchanger 32 in the internal air circulation process by the circulation unit 10. The ventilation fan (4th ventilation fan F4) which comprises the circulation unit 10 is arrange | positioned in the vicinity. Then, the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52 are connected by piping, and the outlet of the second heat exchanger 52 and the inlet of the first heat exchanger 51 are connected by piping. A third pump 53 is arranged in the middle of the pipe connecting the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52. The third pump 53 is driven by a drive command given from the control means and sends out the medium.

  Further, in the sealed space 2 in which the first heat exchanger 51 is disposed, a flange 54 is provided below the cooling heat exchanger 48. The eaves 54 are formed on the surface of the cooling heat exchanger 48 and receive dripping moisture. A supply pipe 55 that supplies water dripped onto itself to the surface of the first heat exchanger 51 is connected to the trough 54. Thus, the ridge 54 constitutes a water supply means for supplying water to the surface of the first heat exchanger 51 together with the supply pipe 55. In the present embodiment, the water supply means is exemplified as one that supplies water in the form of dripping water onto the surface of the first heat exchanger 51. However, in the present invention, the water supply means is the first heat exchange. As long as water is supplied to the surface of the vessel (51), the supply form is not particularly limited.

  In the cooling device having the above configuration, the internal air of the target chamber 1 can be cooled as follows.

  First, the control means gives drive commands to the blower fans F1 to F4, the outside air introduction fan FO, the compressor 22, and the pumps 33, 47, and 53 to drive them, and the first on-off valve 34 and the second on-off valve 45. Give the open command to open. Further, the control means gives a close command to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 that opens and closes the lower end opening of the right chamber 3 and the left An opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the chamber 4, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are closed, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are opened. Establish. Further, the control means brings the first four-way valve 43 and the second four-way valve 44 into a normal state.

  When each of the blower fans F1 to F4 is driven, the internal air of the target chamber 1 is sucked from the suction port 1a as shown in FIG. 2, and the air passage 11 (upper duct 11a, side duct 11b, and lower duct 11c). And is blown into the target chamber 1 from the outlet 1b.

  When the compressor 22 is driven, the compressed refrigerant is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. Here, the refrigerant evaporated in the evaporator 21 is sucked into the compressor 22, compressed again, and circulated.

  By driving the blower fans F1 to F4 and the compressor 22 in this way, the internal air blown from the blower outlet 1b is sufficiently cooled by the evaporator 21, thereby cooling the inside of the target chamber 1. It is possible to cool the electronic device K (heating element) such as a server.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches one end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the first heat exchanger 32. It can be sent to the medium passage 42a of the moisture adsorbing body 41a. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42a of the first moisture adsorbing body 41a, the temperature of the first moisture adsorbing body 41a can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). As a result, the moisture in the air in the right chamber 3 is adsorbed by the first moisture adsorbing body 41a, whereby the first heat exchanger 51 communicates with the right chamber 3 through the inside of the right chamber 3 and the lower end opening of the right chamber 3. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches one end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42 b passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42b of the second moisture adsorbent 41b. By sending exhaust heat to the medium passage 42b of the second moisture adsorbing body 41b, the second moisture adsorbing body 41b is heated, thereby releasing the moisture adsorbed by the second moisture adsorbing body 41b to the left chamber 4. it can. That is, the second moisture adsorbing body 41b can be dehumidified. Here, the moisture released into the left chamber 4 reaches the vicinity of the cooling heat exchanger 48 from the left chamber 4 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the first moisture adsorbing body 41a, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The 1 moisture adsorber 41a is disposed in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped onto the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  Then, after a predetermined time has elapsed, the control means maintains the drive of each of the blower fans F1 to F4, the compressor 22, and each of the pumps 33, 47, 53, and the first moisture adsorbent 41a and the first moisture adsorbent 41a. Switching between adsorption and release with the two moisture adsorbents 41b is performed. That is, an opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 and the left chamber 4 that opens and closes the lower end opening of the right chamber 3. A closing command is given to the shutter mechanism 5 that opens and closes the upper end opening, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are opened, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are closed. Further, the control means gives a switching command to the first four-way valve 43 and the second four-way valve 44 so as to be switched. In addition, the 1st on-off valve 34 and the 2nd on-off valve 45 maintain the state opened.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches the other end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42b passes through the second four-way valve 44 to reach the cooling heat exchanger 48, passes through the cooling heat exchanger 48, passes through the junction P2, and then passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the second heat exchanger 32. It can be sent to the medium passage 42b of the moisture adsorbing body 41b. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42b of the second moisture adsorbing body 41b, the temperature of the second moisture adsorbing body 41b can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). Thereby, the moisture in the air in the left chamber 4 is adsorbed by the second moisture adsorbing body 41b, and thereby the first heat exchanger 51 communicated with the left chamber 4 through the inside of the left chamber 4 and the lower end opening of the left chamber 4. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches the other end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42a of the first moisture adsorbent 41a. By sending exhaust heat to the medium passage 42a of the first moisture adsorbing body 41a, the first moisture adsorbing body 41a is heated, thereby releasing the moisture adsorbed by the first moisture adsorbing body 41a to the right chamber 3. it can. That is, the first moisture adsorber 41a can be dehumidified. Here, the moisture released into the right chamber 3 reaches the vicinity of the cooling heat exchanger 48 from the right chamber 3 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the second moisture adsorbing body 41b, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The two moisture adsorbing bodies 41b are arranged in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped on the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  In the cooling device according to this embodiment, a pipe or the like for supplying a medium that has passed through the external heat exchanger 31 to the first moisture adsorber 41a or the second moisture adsorber 41b is provided with the moisture adsorbers 41a and 41b. Is configured to adjust the temperature to a temperature suitable for moisture adsorption.

  As described above, according to the cooling device of the present embodiment, the second auxiliary cooling unit 50 is cooled by the water supplied to the surface of the first heat exchanger 51 in the first heat exchanger 51 being evaporated. The medium is sent to the second heat exchanger 52, and the internal air passing through the surroundings in the second heat exchanger 52 and the medium are heat-exchanged to cool the internal air. Therefore, the evaporator 21 is provided. The cooling load of the cooling means can be reduced, thereby reducing power consumption.

  Further, according to the cooling device of the present embodiment, when the medium having a temperature substantially equal to the outside air temperature passes through the internal heat exchanger 32, the internal air passing around the internal heat exchanger 32 is cooled. This also makes it possible to reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing power consumption.

  Furthermore, according to the cooling device of the present embodiment, the moisture adsorbers 41a and 41b are heated using the exhaust heat (high heat) obtained by exchanging heat with the internal air of the target chamber 1, so that Also, the circulating internal air can be cooled, and this can also reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing the power consumption. And since the 1st moisture adsorption body 41a or the 2nd moisture adsorption body 41b is heated using exhaust heat, the heat source required for a heating is not required, but also reduction of power consumption can be aimed at.

<Embodiment 2>
4 and 5 are schematic views each schematically showing a cooling device according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the cooling device which is Embodiment 1 mentioned above.

  The cooling device exemplified here cools the internal atmosphere of the target room 1 in which an electronic device K such as a server called a so-called data center is disposed, and includes a circulation unit (circulation means) 10 and a cooling unit. A unit (cooling means) 20, a first auxiliary cooling unit 30, a moisture adsorption unit 40, a second auxiliary cooling unit (medium circulation means) 50, and a cooling heating unit (cooling heating means) 60 are configured. It is.

  The circulation unit 10 includes an air passage 11 and a plurality of blower fans F1 to F4. The air passage 11 is formed inside the building having the target room 1, and communicates with the upper duct 11 a communicating with the suction port 1 a formed in the ceiling of the target room 1, and communicates with the upper duct 11 a. And a lower duct 11c communicating with the side duct 11b and communicating with the outlet 1b formed on the floor of the target chamber 1.

  A plurality (four in the illustrated example) of the blower fans F1 to F4 are provided, and each of them is driven when a drive command is given from a control means (not shown). Each of these blower fans F <b> 1 to F <b> 4 is disposed at a predetermined location of the air passage 11. In the present embodiment, it has been described that the circulation unit 10 includes a plurality of blower fans F1 to F4 as constituent elements. However, in the present invention, the blower fan constituting the circulation means (circulation unit 10) is: There is no need for a plurality, and a single number may be used.

  In such a circulation unit 10, when the blower fans F1 to F4 are driven by the drive command from the control means, the internal air (internal atmosphere) of the target chamber 1 is sucked from the suction port 1a. The air passage 11 (the upper duct 11a, the side duct 11b, and the lower duct 11c) passes through the air outlet 11b and is blown into the target chamber 1. That is, the circulation unit 10 circulates the internal air of the target chamber 1 between the inside and the outside of the target chamber 1.

  The cooling unit 20 is a circuit in which an evaporator 21, a compressor 22, a condenser 23, and an expansion mechanism 24 are sequentially connected by a refrigerant pipe, and a refrigerant is sealed inside. The evaporator 21 is arrange | positioned in the location nearest to the lower duct 11c in the side duct 11b. In the vicinity of the evaporator 21, a blower fan (first blower fan F1) constituting the circulation unit 10 is disposed. The compressor 22 is driven when a drive command is given from the control means. When driven, the compressor 22 sucks and compresses the refrigerant that has passed through the evaporator 21 to bring it into a high-temperature and high-pressure state. The condenser 23 condenses the refrigerant compressed by the compressor 22. The condenser 23 is disposed together with the compressor 22 outside the air passage 11, that is, outside the building, and in the vicinity thereof, an outside air introduction fan FO for introducing outside air is disposed. The outside air introduction fan FO is driven when a drive command is given from the control means. The expansion mechanism 24 adiabatically expands the refrigerant condensed in the condenser 23 and sends it to the evaporator 21.

  In such a cooling unit 20, the refrigerant compressed by the compressor 22 is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. The refrigerant evaporated in the evaporator 21 is sucked into the compressor 22 and compressed again to circulate. That is, the cooling unit 20 cools the internal air circulated by the circulation unit 10.

  The first auxiliary cooling unit 30 is a circuit in which an external heat exchanger 31 and an internal heat exchanger 32 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The external heat exchanger 31 is disposed in the vicinity of the condenser 23 constituting the cooling unit 20. The internal heat exchanger 32 is disposed at a predetermined location in the side duct 11b, and a blower fan (second blower fan F2) constituting the circulation unit 10 is disposed in the vicinity thereof. The outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 are connected by piping, and the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 are connected by piping. A first pump 33 and a first on-off valve 34 are disposed in the middle of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32. The first pump 33 is driven by a drive command given from the control means and sends out the medium. The first opening / closing valve 34 is a valve body that can be opened and closed. When the opening command is given from the control means, the first opening / closing valve 34 opens and allows the passage of the medium. On the other hand, the first opening / closing valve 34 closes when the closing command is given. Thus, the passage of the medium is restricted.

  The moisture adsorption unit 40 is composed of a plurality (two in the illustrated example) of moisture adsorbers 41a and 41b. These moisture adsorbers 41a and 41b are cylindrical ones formed from a moisture adsorbing material such as silica gel or zeolite. These moisture adsorbers 41a and 41b are respectively disposed in the partitioned right chamber 3 and left chamber 4 in the sealed space 2 provided in a mode adjacent to the air passage 11. Here, openings are formed in the upper and lower portions of each chamber, and these openings can be opened and closed by the shutter mechanism 5. The shutter mechanism 5 opens to open a corresponding opening when an opening command is given from the control means, and closes to close a corresponding opening when a closing command is given. Is.

  A spirally wound medium passage 42a is formed in the hollow interior of the moisture adsorbent (first moisture adsorbent 41a) disposed in the right chamber 3, and one end of the medium passage 42a has a first A pipe connected to the first inlet / outlet 43c of the first four-way valve 43 is connected, and a pipe connected to the first inlet / outlet 44c of the second four-way valve 44 is connected to the other end of the medium passage 42a. . Thereby, the opening at one end of the medium passage 42a in the first moisture adsorbing body 41a communicates with the first inlet / outlet 43c of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the first entrance 44c.

  A spirally wound medium passage 42b is formed in the hollow interior of the moisture adsorbent (second moisture adsorbent 41b) disposed in the left chamber 4, and one end of the medium passage 42b has a first end. A pipe connected to the second inlet / outlet 43d of the one-way valve 43 is connected, and a pipe connected to the second inlet / outlet 44d of the second four-way valve 44 is connected to the other end of the medium passage 42b. . Accordingly, the opening at one end of the medium passage 42b in the second moisture adsorbing body 41b communicates with the second inlet / outlet 43d of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the second inlet / outlet 44d.

  The first four-way valve 43 and the second four-way valve 44 will be described. The first four-way valve 43 is a valve body including one dedicated inlet 43a, one dedicated outlet 43b, and two outlets (first inlet 43c and second outlet 43d).

  The dedicated inlet 43 a is downstream of the branch point P1 of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 constituting the first auxiliary cooling unit 30, that is, downstream of the first pump 33. A pipe branching from a location upstream of the first on-off valve 34 is connected. A second on-off valve 45 is disposed in the middle of the piping. The second open / close valve 45 is a valve body that can be opened and closed. When the open command is given from the control means, the second open / close valve 45 opens and permits the passage of the medium, but closes when the close command is given. In this way, the passage of the medium is restricted.

  The dedicated outlet 43b is connected to a pipe connected to the inlet of the exhaust heat exchanger 46 disposed at a position closest to the upper duct 11a in the side duct 11b. Here, in the vicinity of the exhaust heat exchanger 46, a blower fan (third blower fan F3) constituting the circulation unit 10 is disposed.

  One of the two inlets and outlets 43c is connected to a pipe connected to one end of the medium passage 42a of the first moisture adsorbing body 41a as described above, and the other second inlet / outlet 43d is described above. In this way, a pipe connected to one end of the medium passage 42b of the second moisture adsorbing body 41b is connected.

  In the normal state, such a first four-way valve 43 communicates the dedicated inlet 43a and the first inlet / outlet 43c as shown in FIG. 4 and also communicates the dedicated outlet 43b and the second inlet / outlet 43d, When a switching command is given from the control means, the dedicated inlet 43a and the second inlet / outlet 43d are communicated with each other and the dedicated outlet 43b and the first inlet / outlet 43c are communicated with each other (see FIG. 5).

  The second four-way valve 44 is a valve body including one dedicated inlet 44a, one dedicated outlet 44b, and two outlets (first inlet 44c and second outlet 44d).

  A pipe connected to the outlet of the exhaust heat exchanger 46 is connected to the dedicated inlet 44a. A second pump 47 is disposed in the middle of the piping. The second pump 47 is driven when a drive command is given from the control means, and sends out a medium such as water.

  The dedicated outlet 44 b is connected to a pipe connected to the inlet of the cooling heat exchanger 48 disposed above the right chamber 3 and the left chamber 4 in the sealed space 2. The pipe connected to the outlet of the cooling heat exchanger 48 is a confluence point in the middle of the pipe connecting the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 constituting the first auxiliary cooling unit 30. It joins P2.

  As described above, one of the two inlets / outlets 44c is connected to a pipe connected to the other end of the medium passage 42a of the first moisture adsorbent 41a, and the other second inlet / outlet 44d is connected to the above-described second inlet / outlet 44d. As described above, a pipe connected to the other end of the medium passage 42b of the second moisture adsorbent 41b is connected.

  In the normal state, such a second four-way valve 44 communicates the dedicated inlet 44a and the second inlet / outlet 44d as shown in FIG. 4 and also connects the dedicated outlet 44b and the first inlet / outlet 44c, When a switching command is given from the control means, the dedicated inlet 44a and the first inlet / outlet 44c are brought into communication with each other, and the dedicated outlet 44b and the second inlet / outlet 44d are communicated (see FIG. 5).

  The second auxiliary cooling unit 50 is a circuit in which a first heat exchanger 51 and a second heat exchanger 52 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first heat exchanger 51 is disposed below the right chamber 3 and the left chamber 4 in the sealed space 2. In the present embodiment, the first heat exchanger 51 is described as being disposed below the right chamber 3 and the left chamber 4, but in the present invention, the first heat exchanger 51 is provided. Is not necessarily disposed below the sealed space 2, but is preferably disposed in the lower region of the cooling heat exchanger 48.

  The second heat exchanger 52 is located at a predetermined location in the side duct 11b, that is, a location upstream of the evaporator 21 and downstream of the internal heat exchanger 32 in the internal air circulation process by the circulation unit 10. The ventilation fan (4th ventilation fan F4) which comprises the circulation unit 10 is arrange | positioned in the vicinity. Then, the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52 are connected by piping, and the outlet of the second heat exchanger 52 and the inlet of the first heat exchanger 51 are connected by piping. A third pump 53 is arranged in the middle of the pipe connecting the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52. The third pump 53 is driven by a drive command given from the control means and sends out the medium.

  Further, in the sealed space 2 in which the first heat exchanger 51 is disposed, a flange 54 is provided below the cooling heat exchanger 48. The eaves 54 are formed on the surface of the cooling heat exchanger 48 and receive dripping moisture. A supply pipe 55 that supplies water dripped onto itself to the surface of the first heat exchanger 51 is connected to the trough 54. Thus, the ridge 54 constitutes a water supply means for supplying water to the surface of the first heat exchanger 51 together with the supply pipe 55. In the present embodiment, the water supply means is exemplified as one that supplies water in the form of dripping water onto the surface of the first heat exchanger 51. However, in the present invention, the water supply means is the first heat exchange. As long as water is supplied to the surface of the vessel (51), the supply form is not particularly limited.

  The cooling and heating unit 60 is a circuit in which a compressor 61, a radiator 62, an expansion mechanism 63, and an evaporator 64 are sequentially connected by a refrigerant pipe, and a refrigerant is sealed inside.

  The compressor 61 is driven when a drive command is given from the control means, and is driven to compress the refrigerant to a high temperature and high pressure state.

  The radiator 62 radiates heat from the refrigerant compressed by the compressor 22. The radiator 62 is disposed at a location upstream of the exhaust heat exchanger 46, that is, the upper duct 11a in the circulation process of the internal air by the circulation unit 10.

  The expansion mechanism 63 adiabatically expands the refrigerant radiated by the radiator 62. The evaporator 64 is disposed at a location downstream of the exhaust heat exchanger 46 in the internal air circulation process by the circulation unit 10.

  In the cooling device having the above configuration, the internal air of the target chamber 1 can be cooled as follows.

  First, the control means gives drive commands to the blower fans F1 to F4, the outside air introduction fan FO, the compressors 22 and 61, and the pumps 33, 47, and 53 to drive them, and the first opening / closing valve 34 and the second opening / closing valve. An opening command is given to the valve 45 to open it. Further, the control means gives a close command to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 that opens and closes the lower end opening of the right chamber 3 and the left An opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the chamber 4, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are closed, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are opened. Establish. Further, the control means brings the first four-way valve 43 and the second four-way valve 44 into a normal state.

  When each of the blower fans F1 to F4 is driven, the internal air of the target chamber 1 is sucked from the suction port 1a as shown in FIG. 4, and the air passage 11 (upper duct 11a, side duct 11b, and lower duct 11c). And is blown into the target chamber 1 from the outlet 1b.

  When the compressor 22 is driven, the compressed refrigerant is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. Here, the refrigerant evaporated in the evaporator 21 is sucked into the compressor 22, compressed again, and circulated.

  By driving the blower fans F1 to F4 and the compressor 22 in this way, the internal air blown from the blower outlet 1b is sufficiently cooled by the evaporator 21, thereby cooling the inside of the target chamber 1. It is possible to cool the electronic device K (heating element) such as a server.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches one end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the first heat exchanger 32. It can be sent to the medium passage 42a of the moisture adsorbing body 41a. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42a of the first moisture adsorbing body 41a, the temperature of the first moisture adsorbing body 41a can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). As a result, the moisture in the air in the right chamber 3 is adsorbed by the first moisture adsorbing body 41a, whereby the first heat exchanger 51 communicates with the right chamber 3 through the inside of the right chamber 3 and the lower end opening of the right chamber 3. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches one end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42 b passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42b of the second moisture adsorbent 41b. By sending exhaust heat to the medium passage 42b of the second moisture adsorbing body 41b, the second moisture adsorbing body 41b is heated, thereby releasing the moisture adsorbed by the second moisture adsorbing body 41b to the left chamber 4. it can. That is, the second moisture adsorbing body 41b can be dehumidified. Here, the moisture released into the left chamber 4 reaches the vicinity of the cooling heat exchanger 48 from the left chamber 4 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the first moisture adsorbing body 41a, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The 1 moisture adsorber 41a is disposed in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped onto the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  When the compressor 61 is driven, the compressed refrigerant dissipates heat in the radiator 62 and heats the internal air that passes around the radiator 62. The refrigerant radiated by the radiator 62 is sent to the expansion mechanism 63 and is adiabatically expanded by the expansion mechanism 63. The refrigerant adiabatically expanded by the expansion mechanism 63 is sent to the evaporator 64, where it evaporates by exchanging heat with the internal air passing around the evaporator 64. As a result, the internal air passing around the evaporator 64 is cooled. Here, the refrigerant evaporated in the evaporator 64 is sucked into the compressor 61, compressed again, and circulated.

  Thus, by driving the compressor 61 which comprises the cooling heating unit 60, while being able to fully heat the internal air suck | inhaled from the suction inlet 1a with the heat radiator 62, the waste heat exchanger 46 is made. The passed internal air can be cooled by the evaporator 64.

  And after predetermined time passes, a control means maintains the drive of each ventilation fan F1-F4, compressor 22,61, each pump 33,47,53, and the 1st moisture adsorption body 41a. And adsorption / release of the second moisture adsorbent 41b. That is, an opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 and the left chamber 4 that opens and closes the lower end opening of the right chamber 3. A closing command is given to the shutter mechanism 5 that opens and closes the upper end opening, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are opened, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are closed. Further, the control means gives a switching command to the first four-way valve 43 and the second four-way valve 44 so as to be switched. In addition, the 1st on-off valve 34 and the 2nd on-off valve 45 maintain the state opened.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches the other end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42b passes through the second four-way valve 44 to reach the cooling heat exchanger 48, passes through the cooling heat exchanger 48, passes through the junction P2, and then passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the second heat exchanger 32. It can be sent to the medium passage 42b of the moisture adsorbing body 41b. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42b of the second moisture adsorbing body 41b, the temperature of the second moisture adsorbing body 41b can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). Thereby, the moisture in the air in the left chamber 4 is adsorbed by the second moisture adsorbing body 41b, and thereby the first heat exchanger 51 communicated with the left chamber 4 through the inside of the left chamber 4 and the lower end opening of the left chamber 4. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches the other end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42a of the first moisture adsorbent 41a. By sending exhaust heat to the medium passage 42a of the first moisture adsorbing body 41a, the first moisture adsorbing body 41a is heated, thereby releasing the moisture adsorbed by the first moisture adsorbing body 41a to the right chamber 3. it can. That is, the first moisture adsorber 41a can be dehumidified. Here, the moisture released into the right chamber 3 reaches the vicinity of the cooling heat exchanger 48 from the right chamber 3 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the second moisture adsorbing body 41b, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The two moisture adsorbing bodies 41b are arranged in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped on the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  When the compressor 61 is driven, the compressed refrigerant dissipates heat in the radiator 62 and heats the internal air that passes around the radiator 62. The refrigerant radiated by the radiator 62 is sent to the expansion mechanism 63 and is adiabatically expanded by the expansion mechanism 63. The refrigerant adiabatically expanded by the expansion mechanism 63 is sent to the evaporator 64, where it evaporates by exchanging heat with the internal air passing around the evaporator 64. As a result, the internal air passing around the evaporator 64 is cooled. Here, the refrigerant evaporated in the evaporator 64 is sucked into the compressor 61, compressed again, and circulated.

  Thus, by driving the compressor 61 which comprises the cooling heating unit 60, while being able to fully heat the internal air suck | inhaled from the suction inlet 1a with the heat radiator 62, the waste heat exchanger 46 is made. The passed internal air can be cooled by the evaporator 64.

  In the cooling device according to this embodiment, a pipe or the like for supplying a medium that has passed through the external heat exchanger 31 to the first moisture adsorber 41a or the second moisture adsorber 41b is provided with the moisture adsorbers 41a and 41b. Is configured to adjust the temperature to a temperature suitable for moisture adsorption.

  As described above, according to the cooling device of the present embodiment, the second auxiliary cooling unit 50 is cooled by the water supplied to the surface of the first heat exchanger 51 in the first heat exchanger 51 being evaporated. The medium is sent to the second heat exchanger 52, and the internal air passing through the surroundings in the second heat exchanger 52 and the medium are heat-exchanged to cool the internal air. Therefore, the evaporator 21 is provided. The cooling load of the cooling means can be reduced, thereby reducing power consumption.

  Further, according to the cooling device of the present embodiment, when the medium having a temperature substantially equal to the outside air temperature passes through the internal heat exchanger 32, the internal air passing around the internal heat exchanger 32 is cooled. This also makes it possible to reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing power consumption.

  Furthermore, according to the cooling device of the present embodiment, the moisture adsorbers 41a and 41b are heated using the exhaust heat (high heat) obtained by exchanging heat with the internal air of the target chamber 1, so that Also, the circulating internal air can be cooled, and this can also reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing the power consumption. And since the 1st moisture adsorption body 41a or the 2nd moisture adsorption body 41b is heated using exhaust heat, the heat source required for a heating is not required, but also reduction of power consumption can be aimed at.

  Furthermore, according to the cooling device of the present embodiment, the radiator 62 constituting the cooling and heating unit 60 is disposed upstream of the exhaust heat exchanger 46 in the circulation process of the internal air by the circulation unit 10. Since the internal air that passes through its surroundings can be heated, when the temperature of the internal air sucked through the suction port 1a is low, that is, when the exhaust heat temperature of the electronic device K (heating element) such as a server is low Also, the exhaust heat exchanger 46 can acquire sufficient exhaust heat to heat the moisture adsorbers 41a and 41b, and the second auxiliary cooling unit 50 can be stably and continuously cooled. In addition, power consumption can be reduced.

<Embodiment 3>
6 and 7 are schematic views each schematically showing a cooling device according to the third embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the cooling device which is Embodiment 1 mentioned above.

  The cooling device exemplified here cools the internal atmosphere of the target room 1 in which an electronic device K such as a server called a so-called data center is disposed, and includes a circulation unit (circulation means) 100, A unit (cooling means) 200, a first auxiliary cooling unit 30, a moisture adsorption unit 40, and a second auxiliary cooling unit (medium circulation means) 50 are provided.

  The circulation unit 100 includes an air passage 11 and a plurality of blower fans F1 to F5. The air passage 11 is formed inside the building having the target room 1, and communicates with the upper duct 11 a communicating with the suction port 1 a formed in the ceiling of the target room 1, and communicates with the upper duct 11 a. And a lower duct 11c communicating with the side duct 11b and communicating with the outlet 1b formed on the floor of the target chamber 1.

  A plurality (five in the illustrated example) of the blower fans F1 to F5 are provided, and each is driven by a drive command given from a control unit (not shown). These blower fans F <b> 1 to F <b> 5 are respectively disposed at predetermined locations in the air passage 11. In the present embodiment, it has been described that the circulation unit 100 includes a plurality of blower fans F1 to F5 as constituent elements. However, in the present invention, the blower fan constituting the circulation means (circulation unit 100) is: There is no need for a plurality, and a single number may be used.

  In such a circulation unit 100, when each blower fan F1 to F5 is driven by a drive command from the control means, the internal air (internal atmosphere) of the target chamber 1 is sucked from the suction port 1a. The air passage 11 (the upper duct 11a, the side duct 11b, and the lower duct 11c) passes through the air outlet 11b and is blown into the target chamber 1. That is, the circulation unit 100 circulates the internal air of the target chamber 1 between the inside and the outside of the target chamber 1.

  The cooling unit 200 is a circuit in which an evaporator 21, a compressor 22, a condenser 23, and an expansion mechanism 24 are sequentially connected by a refrigerant pipe, and a refrigerant is sealed inside. The evaporator 21 is arrange | positioned in the location nearest to the lower duct 11c in the side duct 11b. In the vicinity of the evaporator 21, a blower fan (first blower fan F1) constituting the circulation unit 100 is disposed. The compressor 22 is driven when a drive command is given from the control means. When driven, the compressor 22 sucks and compresses the refrigerant that has passed through the evaporator 21 to bring it into a high-temperature and high-pressure state. The condenser 23 condenses the refrigerant compressed by the compressor 22. The condenser 23 is disposed in the upper duct 11a, and a blower fan (fifth blower fan F5) constituting the circulation unit 100 is disposed in the vicinity thereof. The expansion mechanism 24 adiabatically expands the refrigerant condensed in the condenser 23 and sends it to the evaporator 21.

  In such a cooling unit 200, the refrigerant compressed by the compressor 22 is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. The refrigerant evaporated in the evaporator 21 is sucked into the compressor 22 and compressed again to circulate. That is, the cooling unit 200 cools the internal air circulated by the circulation unit 100.

  The first auxiliary cooling unit 30 is a circuit in which an external heat exchanger 31 and an internal heat exchanger 32 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The external heat exchanger 31 is arranged outside the building, and an outside air introduction fan FO for introducing outside air is arranged in the vicinity thereof. The outside air introduction fan FO is driven when a drive command is given from the control means. The internal heat exchanger 32 is disposed at a predetermined position in the side duct 11b, and a blower fan (second blower fan F2) constituting the circulation unit 100 is disposed in the vicinity thereof. The outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 are connected by piping, and the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 are connected by piping. A first pump 33 and a first on-off valve 34 are disposed in the middle of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32. The first pump 33 is driven by a drive command given from the control means and sends out the medium. The first opening / closing valve 34 is a valve body that can be opened and closed. When the opening command is given from the control means, the first opening / closing valve 34 opens and allows the passage of the medium. On the other hand, the first opening / closing valve 34 closes when the closing command is given. Thus, the passage of the medium is restricted.

  The moisture adsorption unit 40 is composed of a plurality (two in the illustrated example) of moisture adsorbers 41a and 41b. These moisture adsorbers 41a and 41b are cylindrical ones formed from a moisture adsorbing material such as silica gel or zeolite. These moisture adsorbers 41a and 41b are respectively disposed in the partitioned right chamber 3 and left chamber 4 in the sealed space 2 provided in a mode adjacent to the air passage 11. Here, openings are formed in the upper and lower portions of each chamber, and these openings can be opened and closed by the shutter mechanism 5. The shutter mechanism 5 opens to open a corresponding opening when an opening command is given from the control means, and closes to close a corresponding opening when a closing command is given. Is.

  A spirally wound medium passage 42a is formed in the hollow interior of the moisture adsorbent (first moisture adsorbent 41a) disposed in the right chamber 3, and one end of the medium passage 42a has a first A pipe connected to the first inlet / outlet 43c of the first four-way valve 43 is connected, and a pipe connected to the first inlet / outlet 44c of the second four-way valve 44 is connected to the other end of the medium passage 42a. . Thereby, the opening at one end of the medium passage 42a in the first moisture adsorbing body 41a communicates with the first inlet / outlet 43c of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the first entrance 44c.

  A spirally wound medium passage 42b is formed in the hollow interior of the moisture adsorbent (second moisture adsorbent 41b) disposed in the left chamber 4, and one end of the medium passage 42b has a first end. A pipe connected to the second inlet / outlet 43d of the one-way valve 43 is connected, and a pipe connected to the second inlet / outlet 44d of the second four-way valve 44 is connected to the other end of the medium passage 42b. . Accordingly, the opening at one end of the medium passage 42b in the second moisture adsorbing body 41b communicates with the second inlet / outlet 43d of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42b is second through the pipe. The four-way valve 44 communicates with the second inlet / outlet 44d.

  The first four-way valve 43 and the second four-way valve 44 will be described. The first four-way valve 43 is a valve body including one dedicated inlet 43a, one dedicated outlet 43b, and two outlets (first inlet 43c and second outlet 43d).

  The dedicated inlet 43 a is downstream of the branch point P1 of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 constituting the first auxiliary cooling unit 30, that is, downstream of the first pump 33. A pipe branching from a location upstream of the first on-off valve 34 is connected. A second on-off valve 45 is disposed in the middle of the piping. The second open / close valve 45 is a valve body that can be opened and closed. When the open command is given from the control means, the second open / close valve 45 opens and permits the passage of the medium, but closes when the close command is given. In this way, the passage of the medium is restricted.

  The dedicated outlet 43b is located at the downstream side of the condenser 23 in the exhaust air heat exchanger 46 disposed in the side duct 11b closest to the upper duct 11a, that is, in the circulation process of the internal air by the circulation unit 100. A pipe connected to the inlet of the exhaust heat exchanger 46 disposed in the pipe is connected. Here, in the vicinity of the exhaust heat exchanger 46, a blower fan (third blower fan F3) constituting the circulation unit 100 is disposed.

  One of the two inlets and outlets 43c is connected to a pipe connected to one end of the medium passage 42a of the first moisture adsorbing body 41a as described above, and the other second inlet / outlet 43d is described above. In this way, a pipe connected to one end of the medium passage 42b of the second moisture adsorbing body 41b is connected.

  In the normal state, such a first four-way valve 43 communicates the dedicated inlet 43a and the first inlet / outlet 43c as shown in FIG. 6 and also communicates the dedicated outlet 43b and the second inlet / outlet 43d, When a switching command is given from the control means, the dedicated inlet 43a and the second inlet / outlet 43d are communicated with each other and the dedicated outlet 43b and the first inlet / outlet 43c are communicated with each other (see FIG. 7).

  The second four-way valve 44 is a valve body including one dedicated inlet 44a, one dedicated outlet 44b, and two outlets (first inlet 44c and second outlet 44d).

  A pipe connected to the outlet of the exhaust heat exchanger 46 is connected to the dedicated inlet 44a. A second pump 47 is disposed in the middle of the piping. The second pump 47 is driven when a drive command is given from the control means, and sends out a medium such as water.

  The dedicated outlet 44 b is connected to a pipe connected to the inlet of the cooling heat exchanger 48 disposed above the right chamber 3 and the left chamber 4 in the sealed space 2. The pipe connected to the outlet of the cooling heat exchanger 48 is a confluence point in the middle of the pipe connecting the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 constituting the first auxiliary cooling unit 30. It joins P2.

  As described above, one of the two inlets / outlets 44c is connected to a pipe connected to the other end of the medium passage 42a of the first moisture adsorbent 41a, and the other second inlet / outlet 44d is connected to the above-described second inlet / outlet 44d. As described above, a pipe connected to the other end of the medium passage 42b of the second moisture adsorbent 41b is connected.

  In the normal state, such a second four-way valve 44 communicates the dedicated inlet 44a and the second inlet / outlet 44d as shown in FIG. 6 and also connects the dedicated outlet 44b and the first inlet / outlet 44c, When a switching command is given from the control means, the dedicated inlet 44a and the first inlet / outlet 44c are brought into communication with each other, and the dedicated outlet 44b and the second inlet / outlet 44d are communicated (see FIG. 7).

  The second auxiliary cooling unit 50 is a circuit in which a first heat exchanger 51 and a second heat exchanger 52 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first heat exchanger 51 is disposed below the right chamber 3 and the left chamber 4 in the sealed space 2. In the present embodiment, the first heat exchanger 51 is described as being disposed below the right chamber 3 and the left chamber 4, but in the present invention, the first heat exchanger 51 is provided. Is not necessarily disposed below the sealed space 2, but is preferably disposed in the lower region of the cooling heat exchanger 48.

  The second heat exchanger 52 is located at a predetermined location in the side duct 11b, that is, a location upstream of the evaporator 21 and downstream of the internal heat exchanger 32 in the internal air circulation process by the circulation unit 100. The ventilation fan (4th ventilation fan F4) which comprises the circulation unit 100 is arrange | positioned in the vicinity. Then, the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52 are connected by piping, and the outlet of the second heat exchanger 52 and the inlet of the first heat exchanger 51 are connected by piping. A third pump 53 is arranged in the middle of the pipe connecting the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52. The third pump 53 is driven by a drive command given from the control means and sends out the medium.

  Further, in the sealed space 2 in which the first heat exchanger 51 is disposed, a flange 54 is provided below the cooling heat exchanger 48. The eaves 54 are formed on the surface of the cooling heat exchanger 48 and receive dripping moisture. A supply pipe 55 that supplies water dripped onto itself to the surface of the first heat exchanger 51 is connected to the trough 54. Thus, the ridge 54 constitutes a water supply means for supplying water to the surface of the first heat exchanger 51 together with the supply pipe 55. In the present embodiment, the water supply means is exemplified as one that supplies water in the form of dripping water onto the surface of the first heat exchanger 51. However, in the present invention, the water supply means is the first heat exchange. As long as water is supplied to the surface of the vessel (51), the supply form is not particularly limited.

  In the cooling device having the above configuration, the internal air of the target chamber 1 can be cooled as follows.

  First, the control means gives drive commands to the blower fans F1 to F5, the outside air introduction fan FO, the compressor 22 and the pumps to drive them, and gives an open command to the first on-off valve 34 and the second on-off valve 45. To establish. Further, the control means gives a close command to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 that opens and closes the lower end opening of the right chamber 3 and the left An opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the chamber 4, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are closed, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are opened. Establish. Further, the control means brings the first four-way valve 43 and the second four-way valve 44 into a normal state.

  When each of the blower fans F1 to F5 is driven, the internal air of the target chamber 1 is sucked from the suction port 1a as shown in FIG. 6, and the air passage 11 (upper duct 11a, side duct 11b, and lower duct 11c). And is blown into the target chamber 1 from the outlet 1b.

  When the compressor 22 is driven, the compressed refrigerant is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. Here, the refrigerant evaporated in the evaporator 21 is sucked into the compressor 22, compressed again, and circulated.

  By driving the blower fans F1 to F5 and the compressor 22 in this way, the internal air blown from the blower outlet 1b is sufficiently cooled by the evaporator 21, thereby cooling the inside of the target chamber 1. It is possible to cool the electronic device K (heating element) such as a server.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches one end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the first heat exchanger 32. It can be sent to the medium passage 42a of the moisture adsorbing body 41a. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42a of the first moisture adsorbing body 41a, the temperature of the first moisture adsorbing body 41a can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). As a result, the moisture in the air in the right chamber 3 is adsorbed by the first moisture adsorbing body 41a, whereby the first heat exchanger 51 communicates with the right chamber 3 through the inside of the right chamber 3 and the lower end opening of the right chamber 3. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches one end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42b of the second moisture adsorbent 41b. By sending exhaust heat to the medium passage 42b of the second moisture adsorbing body 41b, the second moisture adsorbing body 41b is heated, thereby releasing the moisture adsorbed by the second moisture adsorbing body 41b to the left chamber 4. it can. That is, the second moisture adsorbing body 41b can be dehumidified. Here, the moisture released into the left chamber 4 reaches the vicinity of the cooling heat exchanger 48 from the left chamber 4 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the first moisture adsorbing body 41a, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The 1 moisture adsorber 41a is disposed in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped onto the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  Then, after a predetermined time has elapsed, the control means maintains the drive of each of the blower fans F1 to F5, the compressor 22, and each of the pumps 33, 47, 53, and the first moisture adsorbent 41a and the first moisture adsorbent 41a. Switching between adsorption and release with the two moisture adsorbents 41b is performed. That is, an opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 and the left chamber 4 that opens and closes the lower end opening of the right chamber 3. A closing command is given to the shutter mechanism 5 that opens and closes the upper end opening, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are opened, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are closed. Further, the control means gives a switching command to the first four-way valve 43 and the second four-way valve 44 so as to be switched. In addition, the 1st on-off valve 34 and the 2nd on-off valve 45 maintain the state opened.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second opening / closing valve 45 and the first four-way valve 43, reaches the other end of the medium passage 42b of the second moisture adsorbing body 41b, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the second heat exchanger 32. It can be sent to the medium passage 42b of the moisture adsorbing body 41b. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42b of the second moisture adsorbing body 41b, the temperature of the second moisture adsorbing body 41b can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). Thereby, the moisture in the air in the left chamber 4 is adsorbed by the second moisture adsorbing body 41b, and thereby the first heat exchanger 51 communicated with the left chamber 4 through the inside of the left chamber 4 and the lower end opening of the left chamber 4. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches the other end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42a of the first moisture adsorbent 41a. By sending exhaust heat to the medium passage 42a of the first moisture adsorbing body 41a, the first moisture adsorbing body 41a is heated, thereby releasing the moisture adsorbed by the first moisture adsorbing body 41a to the right chamber 3. it can. That is, the first moisture adsorber 41a can be dehumidified. Here, the moisture released into the right chamber 3 reaches the vicinity of the cooling heat exchanger 48 from the right chamber 3 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the second moisture adsorbing body 41b, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The two moisture adsorbing bodies 41b are arranged in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped on the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  In the cooling device according to this embodiment, a pipe or the like for supplying a medium that has passed through the external heat exchanger 31 to the first moisture adsorber 41a or the second moisture adsorber 41b is provided with the moisture adsorbers 41a and 41b. Is configured to adjust the temperature to a temperature suitable for moisture adsorption.

  As described above, according to the cooling device of the present embodiment, the second auxiliary cooling unit 50 is cooled by the water supplied to the surface of the first heat exchanger 51 in the first heat exchanger 51 being evaporated. The medium is sent to the second heat exchanger 52, and the internal air passing through the surroundings in the second heat exchanger 52 and the medium are heat-exchanged to cool the internal air. Therefore, the evaporator 21 is provided. The cooling load of the cooling means can be reduced, thereby reducing power consumption.

  Further, according to the cooling device of the present embodiment, when the medium having a temperature substantially equal to the outside air temperature passes through the internal heat exchanger 32, the internal air passing around the internal heat exchanger 32 is cooled. This also makes it possible to reduce the cooling load of the cooling unit 200 having the evaporator 21, thereby reducing the power consumption.

  Furthermore, according to the cooling device of the present embodiment, the moisture adsorbers 41a and 41b are heated using the exhaust heat (high heat) obtained by exchanging heat with the internal air of the target chamber 1, so that Also, the circulating internal air can be cooled, and this can also reduce the cooling load of the cooling unit 200 having the evaporator 21, thereby reducing the power consumption. And since the 1st moisture adsorption body 41a or the 2nd moisture adsorption body 41b is heated using exhaust heat, the heat source required for a heating is not required, but also reduction of power consumption can be aimed at.

  Furthermore, according to the cooling apparatus of the present embodiment, the condenser 23 constituting the cooling unit 200 is disposed in the upper duct 11a, that is, in the circulation process of the internal air by the circulation unit 100, the exhaust heat exchanger 46 is disposed. Since it is arrange | positioned upstream, the internal air suck | inhaled through the suction inlet 1a with the refrigerant | coolant compressed with the compressor 22 can be heated, and it can utilize effectively.

<Embodiment 4>
8 and 9 are schematic views each schematically showing a cooling device according to the fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the cooling device which is Embodiment 1 mentioned above.

  The cooling device exemplified here cools the internal atmosphere of the target room 1 in which an electronic device K such as a server called a so-called data center is disposed, and includes a circulation unit (circulation means) 100, A unit (cooling means) 201, a first auxiliary cooling unit 30, a moisture adsorption unit 40, and a second auxiliary cooling unit (medium circulation means) 50 are provided.

  The circulation unit 100 includes an air passage 11 and a plurality of blower fans F1 to F5. The air passage 11 is formed inside the building having the target room 1, and communicates with the upper duct 11 a communicating with the suction port 1 a formed in the ceiling of the target room 1, and communicates with the upper duct 11 a. And a lower duct 11c communicating with the side duct 11b and communicating with the outlet 1b formed on the floor of the target chamber 1.

  A plurality (five in the illustrated example) of the blower fans F1 to F5 are provided, and each is driven by a drive command given from a control unit (not shown). These blower fans F <b> 1 to F <b> 5 are respectively disposed at predetermined locations in the air passage 11. In the present embodiment, it has been described that the circulation unit 100 includes a plurality of blower fans F1 to F5 as constituent elements. However, in the present invention, the blower fan constituting the circulation means (circulation unit 100) is: There is no need for a plurality, and a single number may be used.

  In such a circulation unit 100, when each blower fan F1 to F5 is driven by a drive command from the control means, the internal air (internal atmosphere) of the target chamber 1 is sucked from the suction port 1a. The air passage 11 (the upper duct 11a, the side duct 11b, and the lower duct 11c) passes through the air outlet 11b and is blown into the target chamber 1. That is, the circulation unit 100 circulates the internal air of the target chamber 1 between the inside and the outside of the target chamber 1.

  The cooling unit 201 is a circuit in which the evaporator 21, the compressor 22, the two condensers 23 and 25, and the expansion mechanism 24 are sequentially connected by a refrigerant pipe, and the refrigerant is sealed inside. The evaporator 21 is arrange | positioned in the location nearest to the lower duct 11c in the side duct 11b. In the vicinity of the evaporator 21, a blower fan (first blower fan F1) constituting the circulation unit 100 is disposed. The compressor 22 is driven when a drive command is given from the control means. When driven, the compressor 22 sucks and compresses the refrigerant that has passed through the evaporator 21 to bring it into a high-temperature and high-pressure state.

  The internal condenser 23 condenses the refrigerant compressed by the compressor 22. The internal condenser 23 is disposed in the upper duct 11a, and a blower fan (fifth blower fan F5) constituting the circulation unit 100 is disposed in the vicinity thereof.

  The external condenser 25 is for condensing the refrigerant condensed in the internal condenser 23 by exchanging heat with the outside air. The external condenser 25 is disposed outside the air passage 11, that is, outside the building, and in the vicinity thereof, an outside air introduction fan FO for introducing outside air is disposed. The outside air introduction fan FO is driven when a drive command is given from the control means.

  A first flow control valve 26 is disposed in the middle of the refrigerant pipe connecting the internal condenser 23 and the external condenser 25. The first flow rate control valve 26 is a valve body that can vary the flow rate according to a command from the control means. Further, it branches off from a location upstream of the location where the first flow rate control valve 26 is located in the middle of the refrigerant pipe connecting the internal condenser 23 and the external condenser 25, and the outlet side of the external condenser 25. A bypass pipe 27 merging with the refrigerant pipe connected to is provided. A second flow control valve 28 is disposed in the middle of the bypass pipe 27. The second flow rate control valve 28 is a valve body that can vary the flow rate according to a command from the control means.

  The expansion mechanism 24 adiabatically expands the refrigerant condensed in the internal condenser 23 or the internal condenser 23 and the external condenser 25 and sends the refrigerant to the evaporator 21.

  In such a cooling unit 201, the refrigerant compressed by the compressor 22 is condensed by the internal condenser 23 or condensed by the internal condenser 23 and the external condenser 25 and then sent to the expansion mechanism 24. Adiabatic expansion is performed by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. The refrigerant evaporated in the evaporator 21 is sucked into the compressor 22 and compressed again to circulate. That is, the cooling unit 201 cools the internal air circulated by the circulation unit 100.

  The first auxiliary cooling unit 30 is a circuit in which an external heat exchanger 31 and an internal heat exchanger 32 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The external heat exchanger 31 is disposed outside the building and in the vicinity of the external condenser 25 constituting the cooling unit 201. The internal heat exchanger 32 is disposed at a predetermined position in the side duct 11b, and a blower fan (second blower fan F2) constituting the circulation unit 100 is disposed in the vicinity thereof. The outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 are connected by piping, and the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 are connected by piping. A first pump 33 and a first on-off valve 34 are disposed in the middle of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32. The first pump 33 is driven by a drive command given from the control means and sends out the medium. The first opening / closing valve 34 is a valve body that can be opened and closed. When the opening command is given from the control means, the first opening / closing valve 34 opens and allows the passage of the medium. On the other hand, the first opening / closing valve 34 closes when the closing command is given. Thus, the passage of the medium is restricted.

  The moisture adsorption unit 40 is composed of a plurality (two in the illustrated example) of moisture adsorbers 41a and 41b. These moisture adsorbers 41a and 41b are cylindrical ones formed from a moisture adsorbing material such as silica gel or zeolite. These moisture adsorbers 41a and 41b are respectively disposed in the partitioned right chamber 3 and left chamber 4 in the sealed space 2 provided in a mode adjacent to the air passage 11. Here, openings are formed in the upper and lower portions of each chamber, and these openings can be opened and closed by the shutter mechanism 5. The shutter mechanism 5 opens to open a corresponding opening when an opening command is given from the control means, and closes to close a corresponding opening when a closing command is given. Is.

  A spirally wound medium passage 42a is formed in the hollow interior of the moisture adsorbent (first moisture adsorbent 41a) disposed in the right chamber 3, and one end of the medium passage 42a has a first A pipe connected to the first inlet / outlet 43c of the first four-way valve 43 is connected, and a pipe connected to the first inlet / outlet 44c of the second four-way valve 44 is connected to the other end of the medium passage 42a. . Thereby, the opening at one end of the medium passage 42a in the first moisture adsorbing body 41a communicates with the first inlet / outlet 43c of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the first entrance 44c.

  A spirally wound medium passage 42b is formed in the hollow interior of the moisture adsorbent (second moisture adsorbent 41b) disposed in the left chamber 4, and one end of the medium passage 42b has a first end. A pipe connected to the second inlet / outlet 43d of the one-way valve 43 is connected, and a pipe connected to the second inlet / outlet 44d of the second four-way valve 44 is connected to the other end of the medium passage 42b. . Accordingly, the opening at one end of the medium passage 42b in the second moisture adsorbing body 41b communicates with the second inlet / outlet 43d of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42b is second through the pipe. The four-way valve 44 communicates with the second inlet / outlet 44d.

  The first four-way valve 43 and the second four-way valve 44 will be described. The first four-way valve 43 is a valve body including one dedicated inlet 43a, one dedicated outlet 43b, and two outlets (first inlet 43c and second outlet 43d).

  The dedicated inlet 43 a is downstream of the branch point P1 of the pipe connecting the outlet of the external heat exchanger 31 and the inlet of the internal heat exchanger 32 constituting the first auxiliary cooling unit 30, that is, downstream of the first pump 33. A pipe branching from a location upstream of the first on-off valve 34 is connected. A second on-off valve 45 is disposed in the middle of the piping. The second open / close valve 45 is a valve body that can be opened and closed. When the open command is given from the control means, the second open / close valve 45 opens and permits the passage of the medium, but closes when the close command is given. In this way, the passage of the medium is restricted.

  The dedicated outlet 43b is located on the downstream side of the internal condenser 23 in the exhaust air heat exchanger 46 disposed in the side duct 11b closest to the upper duct 11a, that is, in the circulation process of the internal air by the circulation unit 100. A pipe connected to the inlet of the exhaust heat exchanger 46 disposed at the location is connected. Here, in the vicinity of the exhaust heat exchanger 46, a blower fan (third blower fan F3) constituting the circulation unit 100 is disposed.

  One of the two inlets and outlets 43c is connected to a pipe connected to one end of the medium passage 42a of the first moisture adsorbing body 41a as described above, and the other second inlet / outlet 43d is described above. In this way, a pipe connected to one end of the medium passage 42b of the second moisture adsorbing body 41b is connected.

  In the normal state, such a first four-way valve 43 communicates the dedicated inlet 43a and the first inlet / outlet 43c as shown in FIG. 8, and also communicates the dedicated outlet 43b and the second outlet / inlet 43d, When a switching command is given from the control means, the dedicated inlet 43a and the second inlet / outlet 43d are communicated with each other and the dedicated outlet 43b and the first inlet / outlet 43c are communicated with each other (see FIG. 9).

  The second four-way valve 44 is a valve body including one dedicated inlet 44a, one dedicated outlet 44b, and two outlets (first inlet 44c and second outlet 44d).

  A pipe connected to the outlet of the exhaust heat exchanger 46 is connected to the dedicated inlet 44a. A second pump 47 is disposed in the middle of the piping. The second pump 47 is driven when a drive command is given from the control means, and sends out a medium such as water.

  The dedicated outlet 44 b is connected to a pipe connected to the inlet of the cooling heat exchanger 48 disposed above the right chamber 3 and the left chamber 4 in the sealed space 2. The pipe connected to the outlet of the cooling heat exchanger 48 is a confluence point in the middle of the pipe connecting the outlet of the internal heat exchanger 32 and the inlet of the external heat exchanger 31 constituting the first auxiliary cooling unit 30. It joins P2.

  As described above, one of the two inlets / outlets 44c is connected to a pipe connected to the other end of the medium passage 42a of the first moisture adsorbent 41a, and the other second inlet / outlet 44d is connected to the above-described second inlet / outlet 44d. As described above, a pipe connected to the other end of the medium passage 42b of the second moisture adsorbent 41b is connected.

  In the normal state, such a second four-way valve 44 communicates the dedicated inlet 44a and the second inlet / outlet 44d as shown in FIG. 8 and communicates the dedicated outlet 44b and the first inlet / outlet 44c, When a switching command is given from the control means, the dedicated inlet 44a and the first inlet / outlet 44c are brought into communication with each other, and the dedicated outlet 44b and the second inlet / outlet 44d are communicated (see FIG. 9).

  The second auxiliary cooling unit 50 is a circuit in which a first heat exchanger 51 and a second heat exchanger 52 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first heat exchanger 51 is disposed below the right chamber 3 and the left chamber 4 in the sealed space 2. In the present embodiment, the first heat exchanger 51 is described as being disposed below the right chamber 3 and the left chamber 4, but in the present invention, the first heat exchanger 51 is provided. Is not necessarily disposed below the sealed space 2, but is preferably disposed in the lower region of the cooling heat exchanger 48.

  The second heat exchanger 52 is located at a predetermined location in the side duct 11b, that is, a location upstream of the evaporator 21 and downstream of the internal heat exchanger 32 in the internal air circulation process by the circulation unit 100. The ventilation fan (4th ventilation fan F4) which comprises the circulation unit 100 is arrange | positioned in the vicinity. Then, the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52 are connected by piping, and the outlet of the second heat exchanger 52 and the inlet of the first heat exchanger 51 are connected by piping. A third pump 53 is arranged in the middle of the pipe connecting the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52. The third pump 53 is driven by a drive command given from the control means and sends out the medium.

  Further, in the sealed space 2 in which the first heat exchanger 51 is disposed, a flange 54 is provided below the cooling heat exchanger 48. The eaves 54 are formed on the surface of the cooling heat exchanger 48 and receive dripping moisture. A supply pipe 55 that supplies water dripped onto itself to the surface of the first heat exchanger 51 is connected to the trough 54. Thus, the ridge 54 constitutes a water supply means for supplying water to the surface of the first heat exchanger 51 together with the supply pipe 55. In the present embodiment, the water supply means is exemplified as one that supplies water in the form of dripping water onto the surface of the first heat exchanger 51. However, in the present invention, the water supply means is the first heat exchange. As long as water is supplied to the surface of the vessel (51), the supply form is not particularly limited.

  In the cooling device having the above configuration, the internal air of the target chamber 1 can be cooled as follows.

  First, the control means gives drive commands to the blower fans F1 to F5, the outside air introduction fan FO, the compressor 22, and the pumps 33, 47, 53 to drive them, and the first on-off valve 34 and the second on-off valve 45. Give the open command to open. Further, the control means gives a close command to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 that opens and closes the lower end opening of the right chamber 3 and the left An opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the chamber 4, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are closed, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are opened. Establish. Further, the control means brings the first four-way valve 43 and the second four-way valve 44 into a normal state. Further, the control means adjusts the first flow rate control valve 26 to an opening degree that maintains a predetermined flow rate, while closing the second flow rate control valve 28.

  When each of the blower fans F1 to F5 is driven, the internal air of the target chamber 1 is sucked from the suction port 1a as shown in FIG. 8, and the air passage 11 (upper duct 11a, side duct 11b, and lower duct 11c). And is blown into the target chamber 1 from the outlet 1b.

  When the compressor 22 is driven, the compressed refrigerant is condensed by the internal condenser 23, then condensed by the external condenser 25, and then sent to the expansion mechanism 24, where it is adiabatically expanded by the expansion mechanism 24. The The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. Here, the refrigerant evaporated in the evaporator 21 is sucked into the compressor 22, compressed again, and circulated.

  By driving the blower fans F1 to F5 and the compressor 22 in this way, the internal air blown from the blower outlet 1b is sufficiently cooled by the evaporator 21, thereby cooling the inside of the target chamber 1. It is possible to cool the electronic device K (heating element) such as a server.

  By driving the first pump 33, the medium that has passed through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second on-off valve 45 and the first four-way valve 43, reaches one end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the first heat exchanger 32. It can be sent to the medium passage 42a of the moisture adsorbing body 41a. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42a of the first moisture adsorbing body 41a, the temperature of the first moisture adsorbing body 41a can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). As a result, the moisture in the air in the right chamber 3 is adsorbed by the first moisture adsorbing body 41a, whereby the first heat exchanger 51 communicates with the right chamber 3 through the inside of the right chamber 3 and the lower end opening of the right chamber 3. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches one end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42b of the second moisture adsorbent 41b. By sending exhaust heat to the medium passage 42b of the second moisture adsorbing body 41b, the second moisture adsorbing body 41b is heated, thereby releasing the moisture adsorbed by the second moisture adsorbing body 41b to the left chamber 4. it can. That is, the second moisture adsorbing body 41b can be dehumidified. Here, the moisture released into the left chamber 4 reaches the vicinity of the cooling heat exchanger 48 from the left chamber 4 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the first moisture adsorbing body 41a, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The 1 moisture adsorber 41a is disposed in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped onto the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  And after predetermined time passes, a control means maintains the drive of each ventilation fan F1-F5, the compressor 22, and each pump, The 1st moisture adsorption body 41a and the 2nd moisture adsorption body 41b Switching between adsorption and release. That is, an opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 and the left chamber 4 that opens and closes the lower end opening of the right chamber 3. A closing command is given to the shutter mechanism 5 that opens and closes the upper end opening, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are opened, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are closed. Further, the control means gives a switching command to the first four-way valve 43 and the second four-way valve 44 so as to be switched. In addition, the 1st on-off valve 34 and the 2nd on-off valve 45 maintain the state opened.

  By driving the first pump 33, the medium passing through the external heat exchanger 31 circulates as shown in FIG. That is, the medium that has passed through the external heat exchanger 31 branches at the branch point P1, and one of the media passes through the first on-off valve 34 and reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32, and then passes through the junction P <b> 2 and returns to the external heat exchanger 31. The other medium branched at the branch point P1 passes through the second opening / closing valve 45 and the first four-way valve 43, reaches the other end of the medium passage 42b of the second moisture adsorbing body 41b, and passes through the medium passage 42a. The medium that has passed through the medium passage 42a passes through the second four-way valve 44 and reaches the cooling heat exchanger 48. After passing through the cooling heat exchanger 48, the medium passes through the junction P2 and passes through the external heat exchanger 31. Return to.

  By driving the first pump 33 in this way, the medium passing through the external heat exchanger 31 performs heat exchange with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32 and the second heat exchanger 32. It can be sent to the medium passage 42b of the moisture adsorbing body 41b. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. In addition, what is necessary is just to close the 1st on-off valve 34 through a control means, when external temperature is higher than the temperature of the internal air which passes the circumference | surroundings of the internal heat exchanger 32. FIG.

  On the other hand, by sending the heat of the outside air to the medium passage 42b of the second moisture adsorbing body 41b, the temperature of the second moisture adsorbing body 41b can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). Thereby, the moisture in the air in the left chamber 4 is adsorbed by the second moisture adsorbing body 41b, and thereby the first heat exchanger 51 communicated with the left chamber 4 through the inside of the left chamber 4 and the lower end opening of the left chamber 4. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches the other end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42a of the first moisture adsorbent 41a. By sending exhaust heat to the medium passage 42a of the first moisture adsorbing body 41a, the first moisture adsorbing body 41a is heated, thereby releasing the moisture adsorbed by the first moisture adsorbing body 41a to the right chamber 3. it can. That is, the first moisture adsorber 41a can be dehumidified. Here, the moisture released into the right chamber 3 reaches the vicinity of the cooling heat exchanger 48 from the right chamber 3 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the second moisture adsorbing body 41b, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The two moisture adsorbing bodies 41b are arranged in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped on the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  In the cooling device according to this embodiment, a pipe or the like for supplying a medium that has passed through the external heat exchanger 31 to the first moisture adsorber 41a or the second moisture adsorber 41b is provided with the moisture adsorbers 41a and 41b. Is configured to adjust the temperature to a temperature suitable for moisture adsorption.

  As described above, according to the cooling device of the present embodiment, the second auxiliary cooling unit 50 is cooled by the water supplied to the surface of the first heat exchanger 51 in the first heat exchanger 51 being evaporated. The medium is sent to the second heat exchanger 52, and the internal air passing through the surroundings in the second heat exchanger 52 and the medium are heat-exchanged to cool the internal air. Therefore, the evaporator 21 is provided. The cooling load of the cooling means can be reduced, thereby reducing power consumption.

  Further, according to the cooling device of the present embodiment, when the medium having a temperature substantially equal to the outside air temperature passes through the internal heat exchanger 32, the internal air passing around the internal heat exchanger 32 is cooled. This also makes it possible to reduce the cooling load of the cooling unit 201 having the evaporator 21, thereby reducing power consumption.

  Furthermore, according to the cooling device of the present embodiment, the moisture adsorbers 41a and 41b are heated using the exhaust heat (high heat) obtained by exchanging heat with the internal air of the target chamber 1, so that Also, the circulating internal air can be cooled, which can also reduce the cooling load of the cooling unit 201 having the evaporator 21, thereby reducing power consumption. And since the 1st moisture adsorption body 41a or the 2nd moisture adsorption body 41b is heated using exhaust heat, the heat source required for a heating is not required, but also reduction of power consumption can be aimed at.

  Furthermore, according to the cooling device of the present embodiment, the internal condenser 23 constituting the cooling unit 201 is disposed in the upper duct 11a, that is, the exhaust heat exchanger 46 in the internal air circulation process by the circulation unit 100. Since the refrigerant is compressed by the compressor 22, the internal air sucked through the suction port 1a can be heated and effectively used. In addition, since the external condenser 25 is provided on the downstream side of the internal condenser 23, the refrigerant that has passed through the internal condenser 23 is adjusted by adjusting the opening of the first flow control valve 26 as necessary. 25, and it is possible to prevent a high-pressure abnormality from occurring.

<Embodiment 5>
10 and 11 are schematic views each schematically showing a cooling device according to the fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the cooling device which is Embodiment 1 mentioned above.

  The cooling device exemplified here cools the internal atmosphere of the target room 1 in which an electronic device K such as a server called a so-called data center is disposed, and includes a circulation unit (circulation means) 10 and a cooling unit. A unit (cooling means) 20, a first auxiliary cooling unit 300, a moisture adsorption unit 40, and a second auxiliary cooling unit (medium circulation means) 50 are provided.

  The circulation unit 10 includes an air passage 11 and a plurality of blower fans F1 to F4. The air passage 11 is formed inside the building having the target room 1, and communicates with the upper duct 11 a communicating with the suction port 1 a formed in the ceiling of the target room 1, and communicates with the upper duct 11 a. And a lower duct 11c communicating with the side duct 11b and communicating with the outlet 1b formed on the floor of the target chamber 1.

  A plurality (four in the illustrated example) of the blower fans F1 to F4 are provided, and each of them is driven when a drive command is given from a control means (not shown). Each of these blower fans F <b> 1 to F <b> 4 is disposed at a predetermined location of the air passage 11. In the present embodiment, it has been described that the circulation unit 10 includes a plurality of blower fans F1 to F4 as constituent elements. However, in the present invention, the blower fan constituting the circulation means (circulation unit 10) is: There is no need for a plurality, and a single number may be used.

  In such a circulation unit 10, when the blower fans F1 to F4 are driven by the drive command from the control means, the internal air (internal atmosphere) of the target chamber 1 is sucked from the suction port 1a. The air passage 11 (the upper duct 11a, the side duct 11b, and the lower duct 11c) passes through the air outlet 11b and is blown out into the target chamber 1. That is, the circulation unit 10 circulates the internal air of the target chamber 1 between the inside and the outside of the target chamber 1.

  The cooling unit 20 is a circuit in which an evaporator 21, a compressor 22, a condenser 23, and an expansion mechanism 24 are sequentially connected by a refrigerant pipe, and a refrigerant is sealed inside. The evaporator 21 is arrange | positioned in the location nearest to the lower duct 11c in the side duct 11b. In the vicinity of the evaporator 21, a blower fan (first blower fan F1) constituting the circulation unit 10 is disposed. The compressor 22 is driven when a drive command is given from the control means. When driven, the compressor 22 sucks and compresses the refrigerant that has passed through the evaporator 21 to bring it into a high-temperature and high-pressure state. The condenser 23 condenses the refrigerant compressed by the compressor 22. The condenser 23 is disposed together with the compressor 22 outside the air passage 11, that is, outside the building, and in the vicinity thereof, an outside air introduction fan FO for introducing outside air is disposed. The outside air introduction fan FO is driven when a drive command is given from the control means. The expansion mechanism 24 adiabatically expands the refrigerant condensed in the condenser 23 and sends it to the evaporator 21.

  In such a cooling unit 20, the refrigerant compressed by the compressor 22 is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. The refrigerant evaporated in the evaporator 21 is sucked into the compressor 22 and compressed again to circulate. That is, the cooling unit 20 cools the internal air circulated by the circulation unit 10.

  The first auxiliary cooling unit 300 is a circuit in which a first external heat exchanger 310 and an internal heat exchanger 32 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first external heat exchanger 310 is disposed in the vicinity of the condenser 23 constituting the cooling unit 20. The internal heat exchanger 32 is disposed at a predetermined location in the side duct 11b, and a blower fan (second blower fan F2) constituting the circulation unit 10 is disposed in the vicinity thereof. Then, the outlet of the first external heat exchanger 310 and the inlet of the internal heat exchanger 32 are connected by piping, and the outlet of the internal heat exchanger 32 and the inlet of the first external heat exchanger 310 are connected by piping. The first pump 33 is disposed in the middle of the pipe connecting the outlet of the first external heat exchanger 310 and the inlet of the internal heat exchanger 32. The first pump 33 is driven by a drive command given from the control means and sends out the medium.

  The moisture adsorption unit 40 is composed of a plurality (two in the illustrated example) of moisture adsorbers 41a and 41b. These moisture adsorbers 41a and 41b are cylindrical ones formed from a moisture adsorbing material such as silica gel or zeolite. These moisture adsorbers 41a and 41b are respectively disposed in the partitioned right chamber 3 and left chamber 4 in the sealed space 2 provided in a mode adjacent to the air passage 11. Here, openings are formed in the upper and lower portions of each chamber, and these openings can be opened and closed by the shutter mechanism 5. The shutter mechanism 5 opens to open a corresponding opening when an opening command is given from the control means, and closes to close a corresponding opening when a closing command is given. Is.

  A spirally wound medium passage 42a is formed in the hollow interior of the moisture adsorbent (first moisture adsorbent 41a) disposed in the right chamber 3, and one end of the medium passage 42a has a first A pipe connected to the first inlet / outlet 43c of the first four-way valve 43 is connected, and a pipe connected to the first inlet / outlet 44c of the second four-way valve 44 is connected to the other end of the medium passage 42a. . Thereby, the opening at one end of the medium passage 42a in the first moisture adsorbing body 41a communicates with the first inlet / outlet 43c of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42a is second through the pipe. The four-way valve 44 communicates with the first entrance 44c.

  A spirally wound medium passage 42b is formed in the hollow interior of the moisture adsorbent (second moisture adsorbent 41b) disposed in the left chamber 4, and one end of the medium passage 42b has a first end. A pipe connected to the second inlet / outlet 43d of the one-way valve 43 is connected, and a pipe connected to the second inlet / outlet 44d of the second four-way valve 44 is connected to the other end of the medium passage 42b. . Accordingly, the opening at one end of the medium passage 42b in the second moisture adsorbing body 41b communicates with the second inlet / outlet 43d of the first four-way valve 43 through the pipe, and the opening at the other end of the medium passage 42b is second through the pipe. The four-way valve 44 communicates with the second inlet / outlet 44d.

  The first four-way valve 43 and the second four-way valve 44 will be described. The first four-way valve 43 is a valve body including one dedicated inlet 43a, one dedicated outlet 43b, and two outlets (first inlet 43c and second outlet 43d).

  The dedicated inlet 43 a is connected to a pipe connected to the outlet of the second external heat exchanger 491 disposed in the vicinity of the first external heat exchanger 310 that constitutes the first auxiliary cooling unit 300. A fourth pump 492 is disposed in the middle of the piping. The fourth pump 492 is driven when a drive command is given from the control means, and sends out the medium.

  The dedicated outlet 43b is connected to a pipe connected to the inlet of the exhaust heat exchanger 46 disposed at a position closest to the upper duct 11a in the side duct 11b. Here, in the vicinity of the exhaust heat exchanger 46, a blower fan (third blower fan F3) constituting the circulation unit 10 is disposed.

  One of the two inlets and outlets 43c is connected to a pipe connected to one end of the medium passage 42a of the first moisture adsorbing body 41a as described above, and the other second inlet / outlet 43d is described above. In this way, a pipe connected to one end of the medium passage 42b of the second moisture adsorbing body 41b is connected.

  In the normal state, such a first four-way valve 43 communicates the dedicated inlet 43a and the first inlet / outlet 43c as shown in FIG. 10, and communicates the dedicated outlet 43b and the second inlet / outlet 43d, When a switching command is given from the control means, the dedicated inlet 43a and the second inlet / outlet 43d are communicated with each other and the dedicated outlet 43b and the first inlet / outlet 43c are communicated with each other (see FIG. 11).

  The second four-way valve 44 is a valve body including one dedicated inlet 44a, one dedicated outlet 44b, and two outlets (first inlet 44c and second outlet 44d).

  A pipe connected to the outlet of the exhaust heat exchanger 46 is connected to the dedicated inlet 44a. A second pump 47 is disposed in the middle of the piping. The second pump 47 is driven when a drive command is given from the control means, and sends out a medium such as water.

  The dedicated outlet 44 b is connected to a pipe connected to the inlet of the cooling heat exchanger 48 disposed above the right chamber 3 and the left chamber 4 in the sealed space 2. A pipe connected to the inlet of the second external heat exchanger 491 is connected to the outlet of the cooling heat exchanger 48.

  As described above, one of the two inlets / outlets 44c is connected to a pipe connected to the other end of the medium passage 42a of the first moisture adsorbent 41a, and the other second inlet / outlet 44d is connected to the above-described second inlet / outlet 44d. As described above, a pipe connected to the other end of the medium passage 42b of the second moisture adsorbent 41b is connected.

  In the normal state, such a second four-way valve 44 communicates the dedicated inlet 44a and the second inlet / outlet 44d as shown in FIG. 10 and also connects the dedicated outlet 44b and the first inlet / outlet 44c, When a switching command is given from the control means, the dedicated inlet 44a and the first inlet / outlet 44c are brought into communication with each other, and the dedicated outlet 44b and the second inlet / outlet 44d are communicated (see FIG. 11).

  The second auxiliary cooling unit 50 is a circuit in which a first heat exchanger 51 and a second heat exchanger 52 are connected by piping, and a medium such as water is enclosed therein. More detailed description is as follows. The first heat exchanger 51 is disposed below the right chamber 3 and the left chamber 4 in the sealed space 2. In the present embodiment, the first heat exchanger 51 is described as being disposed below the right chamber 3 and the left chamber 4, but in the present invention, the first heat exchanger 51 is provided. Is not necessarily disposed below the sealed space 2, but is preferably disposed in the lower region of the cooling heat exchanger 48.

  The second heat exchanger 52 is located at a predetermined location in the side duct 11b, that is, a location upstream of the evaporator 21 and downstream of the internal heat exchanger 32 in the internal air circulation process by the circulation unit 10. The ventilation fan (4th ventilation fan F4) which comprises the circulation unit 10 is arrange | positioned in the vicinity. Then, the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52 are connected by piping, and the outlet of the second heat exchanger 52 and the inlet of the first heat exchanger 51 are connected by piping. A third pump 53 is arranged in the middle of the pipe connecting the outlet of the first heat exchanger 51 and the inlet of the second heat exchanger 52. The third pump 53 is driven by a drive command given from the control means and sends out the medium.

  Further, in the sealed space 2 in which the first heat exchanger 51 is disposed, a flange 54 is provided below the cooling heat exchanger 48. The eaves 54 are formed on the surface of the cooling heat exchanger 48 and receive dripping moisture. A supply pipe 55 that supplies water dripped onto itself to the surface of the first heat exchanger 51 is connected to the trough 54. Thus, the ridge 54 constitutes a water supply means for supplying water to the surface of the first heat exchanger 51 together with the supply pipe 55. In the present embodiment, the water supply means is exemplified as one that supplies water in the form of dripping water onto the surface of the first heat exchanger 51. However, in the present invention, the water supply means is the first heat exchange. As long as water is supplied to the surface of the vessel (51), the supply form is not particularly limited.

  In the cooling apparatus according to this embodiment, the external heat exchanger is divided into two parts with respect to the cooling apparatus according to the first embodiment described above, and each constitutes a circuit for circulating the medium. Is different.

  In the cooling device having the above configuration, the internal air of the target chamber 1 can be cooled as follows.

  First, a control means gives a drive command to each ventilation fan F1-F4, the external air introduction fan FO, the compressor 22, and each pump 33, 47, 492, 53, and drives it. Further, the control means gives a close command to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 that opens and closes the lower end opening of the right chamber 3 and the left An opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the chamber 4, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are closed, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are opened. Establish. Further, the control means brings the first four-way valve 43 and the second four-way valve 44 into a normal state.

  By driving each of the blower fans F1 to F4, the internal air of the target chamber 1 is sucked from the suction port 1a as shown in FIG. 10, and the air passage 11 (upper duct 11a, side duct 11b, and lower duct 11c). And is blown into the target chamber 1 from the outlet 1b.

  When the compressor 22 is driven, the compressed refrigerant is condensed by the condenser 23, sent to the expansion mechanism 24, and adiabatically expanded by the expansion mechanism 24. The refrigerant adiabatically expanded by the expansion mechanism 24 is sent to the evaporator 21, and evaporates by exchanging heat with the internal air passing around the evaporator 21. As a result, the internal air passing around the evaporator 21 is cooled. Here, the refrigerant evaporated in the evaporator 21 is sucked into the compressor 22, compressed again, and circulated.

  By driving the blower fans F1 to F4 and the compressor 22 in this way, the internal air blown from the blower outlet 1b is sufficiently cooled by the evaporator 21, thereby cooling the inside of the target chamber 1. It is possible to cool the electronic device K (heating element) such as a server.

  By driving the first pump 33, the medium that has passed through the first external heat exchanger 310 circulates as shown in FIG. That is, the medium that has passed through the first external heat exchanger 310 reaches the internal heat exchanger 32. The medium that has reached the internal heat exchanger 32 passes through the internal heat exchanger 32 and then returns to the first external heat exchanger 310.

  By driving the first pump 33 in this way, the medium passing through the first external heat exchanger 310 exchanges heat with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the internal heat exchanger 32. Can be sent out. As a result, when the outside air temperature is lower than the temperature of the internal air passing around the internal heat exchanger 32, the internal air is exchanged by heat exchange between the medium and the internal air in the internal heat exchanger 32. Can be cooled. Note that when the outside air temperature is higher than the temperature of the inside air passing around the inside heat exchanger 32, the first pump 33 may be stopped.

  By driving the fourth pump 492, the medium that has passed through the second external heat exchanger 491 circulates as shown in FIG. That is, the medium that has passed through the second external heat exchanger 491 passes through the first four-way valve 43, reaches one end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the second four-way valve 44, reaches the cooling heat exchanger 48, passes through the cooling heat exchanger 48, and then returns to the second external heat exchanger 491.

  By driving the fourth pump 492 in this way, the medium passing through the second external heat exchanger 491 exchanges heat with the outside air to obtain the heat of the outside air, and the obtained heat is used as the first moisture adsorbent 41a. To the medium passage 42a. By sending the heat of the outside air to the medium passage 42a of the first moisture adsorbing body 41a, the temperature of the first moisture adsorbing body 41a can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). As a result, the moisture in the air in the right chamber 3 is adsorbed by the first moisture adsorbing body 41a, whereby the first heat exchanger 51 communicates with the right chamber 3 through the inside of the right chamber 3 and the lower end opening of the right chamber 3. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches one end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42 b passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42b of the second moisture adsorbent 41b. By sending exhaust heat to the medium passage 42b of the second moisture adsorbing body 41b, the second moisture adsorbing body 41b is heated, thereby releasing the moisture adsorbed by the second moisture adsorbing body 41b to the left chamber 4. it can. That is, the second moisture adsorbing body 41b can be dehumidified. Here, the moisture released into the left chamber 4 reaches the vicinity of the cooling heat exchanger 48 from the left chamber 4 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the first moisture adsorbing body 41a, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The 1 moisture adsorber 41a is disposed in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped onto the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  And after predetermined time passes, a control means maintains the drive of each ventilation fan F1-F4, the compressor 22, and each pump 33, 47, 492, 53, 1st moisture adsorption body 41a. And adsorption / release of the second moisture adsorbent 41b. That is, an opening command is given to the shutter mechanism 5 that opens and closes the upper end opening of the right chamber 3 and the shutter mechanism 5 that opens and closes the lower end opening of the left chamber 4, and the shutter mechanism 5 and the left chamber 4 that opens and closes the lower end opening of the right chamber 3. A closing command is given to the shutter mechanism 5 that opens and closes the upper end opening, the upper end opening of the right chamber 3 and the lower end opening of the left chamber 4 are opened, and the lower end opening of the right chamber 3 and the upper end opening of the left chamber 4 are closed. Further, the control means gives a switching command to the first four-way valve 43 and the second four-way valve 44 so as to be switched. In the following, since the circulation of the refrigerant (medium) in the cooling unit 20 and the first auxiliary cooling unit 300 is the same, the description thereof is omitted.

  By driving the fourth pump 492, the medium that has passed through the second external heat exchanger 491 circulates as shown in FIG. That is, the medium that has passed through the second external heat exchanger 491 passes through the first four-way valve 43, reaches the other end of the medium passage 42b of the second moisture adsorbent 41b, and passes through the medium passage 42b. The medium that has passed through the medium passage 42 b passes through the second four-way valve 44, reaches the cooling heat exchanger 48, passes through the cooling heat exchanger 48, and then returns to the second external heat exchanger 491.

  By driving the fourth pump 492 in this way, the medium passing through the second external heat exchanger 491 exchanges heat with the outside air to acquire the heat of the outside air, and the acquired heat is transferred to the second moisture adsorbent 41b. To the medium passage 42b. By sending the heat of the outside air to the medium passage 42b of the second moisture adsorbing body 41b, the temperature of the second moisture adsorbing body 41b can be set to a temperature suitable for adsorption (a temperature substantially equal to the outside air temperature). Thereby, the moisture in the air in the left chamber 4 is adsorbed by the second moisture adsorbing body 41b, and thereby the first heat exchanger 51 communicated with the left chamber 4 through the inside of the left chamber 4 and the lower end opening of the left chamber 4. The pressure around the area is also reduced.

  By driving the second pump 47, the medium that has passed through the exhaust heat exchanger 46 circulates as shown in FIG. That is, the medium that has passed through the exhaust heat exchanger 46 passes through the second four-way valve 44, reaches the other end of the medium passage 42a of the first moisture adsorbent 41a, and passes through the medium passage 42a. The medium that has passed through the medium passage 42 a passes through the first four-way valve 43 and returns to the exhaust heat exchanger 46.

  By driving the second pump 47 in this way, the medium passing through the exhaust heat exchanger 46 exchanges heat with the internal air sucked from the suction port 1a and passed through the upper duct 11a, so that the internal air The exhaust heat (high heat) can be acquired, and the acquired exhaust heat can be sent to the medium passage 42a of the first moisture adsorbent 41a. By sending exhaust heat to the medium passage 42a of the first moisture adsorbing body 41a, the first moisture adsorbing body 41a is heated, thereby releasing the moisture adsorbed by the first moisture adsorbing body 41a to the right chamber 3. it can. That is, the first moisture adsorber 41a can be dehumidified. Here, the moisture released into the right chamber 3 reaches the vicinity of the cooling heat exchanger 48 from the right chamber 3 through an upper end opening that is opened as water vapor. The water vapor that reaches the vicinity of the cooling heat exchanger 48 adheres to the surface as water droplets, and then drops to reach the trough 54. The moisture that has reached the ridge 54 passes through the supply pipe 55 and is dropped onto the surface of the first heat exchanger 51.

  By driving the third pump 53, the medium that has passed through the first heat exchanger 51 circulates as shown in FIG. That is, the medium that has passed through the first heat exchanger 51 reaches the second heat exchanger 52. The medium that has reached the second heat exchanger 52 passes through the second heat exchanger 52 and returns to the first heat exchanger 51.

  As described above, the first heat exchanger 51 is depressurized by adsorbing the moisture of the second moisture adsorbing body 41b, that is, the first heat exchanger 51 is the first heat exchanger 51 in the sealed space 2 in the first space. The two moisture adsorbing bodies 41b are arranged in a reduced pressure atmosphere that is depressurized by adsorbing moisture, and moisture is dripped on the surface through a ridge 54 and a supply pipe 55. Accordingly, the medium passing through the first heat exchanger 51 is cooled as the surface moisture evaporates.

  Therefore, by driving the third pump 53, the medium cooled by the first heat exchanger 51 is sent to the second heat exchanger 52, and the internal air and medium passing through the periphery in the second heat exchanger 52. The internal air can be cooled by exchanging heat with each other.

  In the cooling apparatus according to this embodiment, a pipe or the like for supplying a medium that has passed through the second external heat exchanger 491 to the first moisture adsorber 41a or the second moisture adsorber 41b is provided in the moisture adsorber 41a. , 41b is configured to adjust the temperature to a temperature suitable for moisture adsorption.

  As described above, according to the cooling device of the present embodiment, the second auxiliary cooling unit 50 is cooled by the water supplied to the surface of the first heat exchanger 51 in the first heat exchanger 51 being evaporated. The medium is sent to the second heat exchanger 52, and the internal air passing through the surroundings in the second heat exchanger 52 and the medium are heat-exchanged to cool the internal air. Therefore, the evaporator 21 is provided. The cooling load of the cooling means can be reduced, thereby reducing power consumption.

  Further, according to the cooling device of the present embodiment, when the medium having a temperature substantially equal to the outside air temperature passes through the internal heat exchanger 32, the internal air passing around the internal heat exchanger 32 is cooled. This also makes it possible to reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing power consumption.

  Furthermore, according to the cooling device of the present embodiment, the moisture adsorbers 41a and 41b are heated using the exhaust heat (high heat) obtained by exchanging heat with the internal air of the target chamber 1, so that Also, the circulating internal air can be cooled, and this can also reduce the cooling load of the cooling unit 20 having the evaporator 21, thereby reducing the power consumption. And since the 1st moisture adsorption body 41a or the 2nd moisture adsorption body 41b is heated using exhaust heat, the heat source required for a heating is not required, but also reduction of power consumption can be aimed at.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made. That is, in the above-described embodiment, the moisture adsorbers 41a and 41b are respectively disposed in the two chambers and the four-way valves 43 and 44 are switched, so that the moisture is adsorbed by one of the moisture adsorbers 41a (41b), Although the other moisture adsorbing body 41b (41a) releases moisture, in the present invention, a plurality of moisture adsorbing bodies are not necessarily required, and may be singular.

  In the fourth embodiment described above, the flow control valves 26 and 28 are used. However, in the present invention, a three-way valve or the like may be used.

  In the first, second, fourth, and fifth embodiments described above, the condenser 23 (the external condenser 25 in the fourth embodiment) and the external heat exchanger 31 (the first external heat exchanger in the fifth embodiment). 310) are arranged in close proximity to each other, and the outside air introduction fan FO is arranged in the vicinity thereof to share outside air. However, in the present invention, each heat exchanger (condenser, external An outside air introduction fan may be provided for each of the condenser, the external heat exchanger, and the like, and the drive control may be performed.

  As described above, the cooling device according to the present invention is useful for cooling the internal atmosphere of a room in which an electronic device such as a server called a data center is provided.

DESCRIPTION OF SYMBOLS 1 Target chamber 1a Suction port 1b Outlet 2 Sealed space 3 Right chamber 4 Left chamber 5 Shutter mechanism 10 Circulation unit (circulation means)
11 Air passage 11a Upper duct 11b Side duct 11c Lower duct 20 Cooling unit (cooling means)
21 Evaporator 22 Compressor 23 Condenser 24 Expansion Mechanism 30 First Auxiliary Cooling Unit 31 External Heat Exchanger 32 Internal Heat Exchanger 33 First Pump 34 First Open / Close Valve 40 Moisture Adsorption Unit 41a First Moisture Adsorber 41b Second Water adsorbent 43 First four-way valve 44 Second four-way valve 46 Waste heat exchanger 47 Second pump 48 Heat exchanger 50 for cooling 50 Second auxiliary cooling unit (medium circulation means)
51 1st heat exchanger 52 2nd heat exchanger 53 3rd pump 54 樋 55 supply pipe F1 1st ventilation fan F2 2nd ventilation fan F3 3rd ventilation fan F4 4th ventilation fan K electronic equipment

Claims (4)

A circulation means for circulating the internal atmosphere of the target room between the inside and the outside of the target room;
A cooling device comprising: cooling means for cooling the internal atmosphere circulated by the circulation means;
A moisture adsorber disposed in a predetermined sealed space and composed of a moisture adsorbing material;
Temperature adjusting means for adjusting the moisture adsorbent to a temperature suitable for moisture adsorption;
In the sealed space, the cooling means is cooled in the circulation process of the internal atmosphere by the first heat exchanger disposed in a reduced pressure atmosphere in which the moisture adsorbent is depressurized by adsorbing moisture. A medium connected between the first heat exchanger and the second heat exchanger is formed by connecting a second heat exchanger disposed at a position upstream of the position to be connected by piping. Medium circulating means for circulation;
Moisture supply means for supplying moisture to the surface of the first heat exchanger ;
Moisture releasing means for releasing the adsorbed moisture by heating the moisture adsorbent;
In the circulation process of the internal atmosphere by the circulation means, the moisture release means is arranged at a location downstream of the location where the exhaust heat is acquired from the internal atmosphere, and the surroundings of the self are released by evaporating the supplied refrigerant An evaporator that cools the internal atmosphere passing through the compressor, a compressor that sucks and compresses the refrigerant evaporated in the evaporator, and the moisture release means is discharged from the internal atmosphere in the circulation process of the internal atmosphere by the circulation means. A radiator that is disposed at a location upstream of a location for obtaining heat and that heats the internal atmosphere passing through its surroundings by dissipating the refrigerant supplied from the compressor, and passes through the radiator A cooling and heating means configured by sequentially connecting an expansion mechanism for adiabatically expanding the discharged refrigerant and sending it to the evaporator through a refrigerant pipe ,
The medium circulation means sends out a medium cooled by evaporation of water supplied to the surface of the first heat exchanger in the first heat exchanger to the second heat exchanger, and the second heat exchanger. the internal atmosphere was cooled by and internal atmosphere and the medium passing around heat exchanger in exchanger,
The temperature adjusting means adjusts the temperature of the moisture adsorbent using heat obtained by exchanging heat with outside air, and cools the internal atmosphere circulated by the circulation means. apparatus. A circulation means for circulating the internal atmosphere of the target room between the inside and the outside of the target room;
Cooling means for cooling the internal atmosphere circulated by the circulation means;
In a cooling device comprising:
A moisture adsorber disposed in a predetermined sealed space and composed of a moisture adsorbing material;
Temperature adjusting means for adjusting the moisture adsorbent to a temperature suitable for moisture adsorption;
In the sealed space, the cooling means is cooled in the circulation process of the internal atmosphere by the first heat exchanger disposed in a reduced pressure atmosphere in which the moisture adsorbent is depressurized by adsorbing moisture. A medium connected between the first heat exchanger and the second heat exchanger is formed by connecting a second heat exchanger disposed at a position upstream of the position to be connected by piping. Medium circulating means for circulation;
Moisture supply means for supplying moisture to the surface of the first heat exchanger;
Moisture release means for releasing the adsorbed moisture by heating the moisture adsorbent;
With
The cooling means includes an evaporator that cools the internal atmosphere that passes through the surroundings by evaporating the supplied refrigerant, a compressor that sucks and compresses the refrigerant that has passed through the evaporator, and the circulation means. In the circulation process of the internal atmosphere, the moisture release means is disposed at a location upstream of the location from which the exhaust heat is acquired from the internal atmosphere, and condenses the refrigerant supplied from the compressor to surround its own An internal condenser that heats the internal atmosphere passing through the external condenser, an external condenser that condenses the refrigerant condensed in the internal condenser by exchanging heat with the external air, and the internal condenser, or the internal condenser and the external condenser And an expansion mechanism that adiabatically expands the refrigerant that has passed through the refrigerant and sends the refrigerant to the evaporator, and is sequentially connected by a refrigerant pipe.
The medium circulation means sends out a medium cooled by evaporation of water supplied to the surface of the first heat exchanger in the first heat exchanger to the second heat exchanger, and the second heat exchanger. In the exchanger, the internal atmosphere passing through the surroundings and the medium exchange heat to cool the internal atmosphere,
The temperature adjusting means adjusts the temperature of the moisture adsorbent using heat obtained by exchanging heat with outside air, and cools the internal atmosphere circulated by the circulation means. apparatus. The moisture release means performs heat exchange with an internal atmosphere that has passed through the target chamber to acquire exhaust heat, and uses the acquired exhaust heat to heat a moisture adsorbent to be heated. The cooling device according to claim 1 or 2. The cooling device according to any one of claims 1 to 3, wherein the moisture supply means supplies moisture released through the moisture release means to the first heat exchanger.

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