JP2002162129A - Rotor-type adsorptive freezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorptive freezer which is simple of structure and is advantageous in the aspect of cost and maintenance. SOLUTION: An adsorptive region (a) and desorptive region (b) are provided side by side in the rotational direction of a rotor in the rotational region of an adsorptive rotor 5 equipped with an adsorbent X. A gas circulation path 6 for circulating working gas A in its order is made to cool the working gas A having passed the adsorptive rotor 5 in the adsorptive region (a) and an evaporation chamber 8 which sprays refrigerant liquid W by spray means 12 to the working gas cooled with the cooler 14, and an output heat exchanger 9 which cools the cooling target fluid C by the capture of heat in evaporation accompanying the evaporation of the spray refrigerant liquid W in the evaporation chamber 8 is provided. Gas-for-reproduction supply means 15, 16, and 18 are provided for ventilating and supplying to the desorptive region (b) the gas Ao' for reproduction to be passed to the adsorptive rotor 5 in the desorptive region (b).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a rotor type adsorption refrigerator.

[0002]

2. Description of the Related Art Conventionally, in an adsorption refrigerator utilizing adsorption and desorption by an adsorbent (see FIG. 4), an adsorption step for connecting an adsorption and desorption chamber 30A containing an adsorbent heat exchanger 30a to an evaporation chamber 31 and an adsorbing step are described. The regeneration step of communicating the adsorption / desorption chamber 30A with the condensation chamber 32 is alternately repeated by switching the valve V.

That is, in the adsorption step, as shown in FIG. 4A, the refrigerant vapor S () is added to the adsorbent X in the adsorption / desorption chamber 30A under the cooling of the adsorbent for supplying the cooling water R to the adsorbent heat exchanger 30a. While adsorbing water vapor, the refrigerant liquid W (water) is evaporated in the evaporating chamber 31, and the cooling water C is cooled by the output heat exchanger 31a in the evaporating chamber 31 by removing vaporization heat accompanying the evaporation of the refrigerant.

In the regeneration step, as shown in FIG. 4B, the refrigerant vapor S '(water vapor) is adsorbed while condensing the refrigerant vapor S' (water vapor) in the condensing chamber 32 by cooling with the cooling water R in the condensing heat exchanger 32a. By heating the adsorbent to supply hot water H to the adsorbent heat exchanger 30a, the adsorbent vapor S 'from the previous adsorption step is desorbed from the adsorbent X in the adsorption / desorption chamber 30A, thereby adsorbing in preparation for the next adsorption step. Regenerate agent X. A refrigerant passage 33 returns the condensed refrigerant W (water) in the condensing chamber 32 to the evaporating chamber 31.

[0005] In the conventional adsorption refrigerator, first and second adsorption / desorption chambers 30A and 30B each containing a separate adsorbent heat exchanger 30a and 30b are provided.
As shown in (b), the first and second adsorption / desorption chambers 30 are configured such that the adsorption / desorption step is performed on the other adsorption / desorption chamber 30B while the adsorption / desorption step is performed on the other adsorption / desorption chamber 30B.
A, 30B for each of the adsorption step and the desorption step
, The cooling water C is continuously cooled in the output heat exchanger 31a.

In the conventional adsorption refrigerator, each chamber 30
A, 30B, 31 and 32 are equipped with a vacuum pump for evacuating and desorbing under a high vacuum. In order to maintain the high vacuum state, each chamber 30A, 30B
B, 31, and 32 have a pressure-resistant airtight structure.

[0007]

However, in the conventional adsorption refrigerator, the first and second adsorption / desorption chambers 30A and 30B are required to communicate with the evaporation chamber 31 and the condensation chamber 32 alternately. Switching configuration and complicated switching for alternately supplying cooling water R and hot water H to the adsorbent heat exchangers 30a, 30b incorporated in the first and second adsorption / desorption chambers 30A, 30B, respectively. Configuration is required,
Because of the switching, the control configuration of the device control becomes complicated, which increases the cost of the device, increases the size of the device, and makes maintenance difficult.

In view of this situation, the main problems of the present invention are:
The problem is to solve the above problem effectively by a rational adsorption / desorption structure.

[0009]

Means for Solving the Problems [1] The invention according to claim 1 relates to a rotor-type adsorption refrigerator, which is characterized in that a rotation area of a gas-permeable adsorption rotor provided with an adsorbent has an adsorption area and a desorption area. A cooling device for cooling the working gas passing through the suction rotor in the suction region, the cooling device being provided with the suction region, and a refrigerant liquid being sprayed by the spraying means on the working gas cooled by the cooler in the suction region. A gas circulation path for circulating the working gas in that order over the chamber, and an output heat exchanger for cooling the fluid to be cooled by capturing vaporization heat accompanying the evaporation of the sprayed refrigerant liquid in the evaporation chamber; And a regeneration gas supply means for supplying a regeneration gas passed through the adsorption rotor to the desorption region by ventilation.

That is, in this configuration, the working gas containing the refrigerant vapor due to the evaporation of the sprayed refrigerant liquid in the evaporation chamber is passed through the adsorption rotor in the adsorption area, thereby adsorbing the rotor portion in the adsorption area. The refrigerant vapor is adsorbed and removed from the passing working gas with an agent. In addition, the working gas that has passed through the adsorption region is cooled by a cooler, so that the temperature of the working gas heated by the heat of adsorption generated by the adsorption (and the heat transferred from the desorption region) is lowered.

The refrigerant vapor is removed and the refrigerant liquid is sprayed again in the evaporating chamber on the working gas whose temperature has been lowered, so that the sprayed refrigerant liquid can be efficiently dispersed in a low-temperature atmosphere having a low refrigerant vapor partial pressure. To efficiently cool the fluid to be cooled in the output heat exchanger by removing the vaporization heat accompanying the evaporation, and send the working gas cooled down by the removal of the vaporization heat to the adsorption area to pass through the adsorption rotor. By doing so, high adsorption efficiency is exhibited by the cooling of the adsorbent by the low-temperature working gas, and the refrigerant vapor is efficiently removed from the passing working gas by the adsorption.

On the other hand, in parallel with the circulation of the working gas, in the desorption region, the supplied regeneration gas is passed through the adsorption rotor, so that the adsorbent of the rotor portion which has shifted from the adsorption region to the desorption region by the rotation of the rotor. That is, the adsorbed refrigerant vapor is desorbed from the adsorbent that has adsorbed the refrigerant vapor in the adsorption region) into the regeneration gas, and the adsorbent regenerated by this desorption is transferred to the adsorption region again by rotating the rotor.

That is, with the above configuration, the adsorption in the adsorption zone and the desorption in the desorption zone are performed in parallel and continuously by rotation of the adsorption rotor. Since it enables continuous cooling of the fluid, a complicated switching configuration for alternately communicating each of the first and second adsorption / desorption chambers with the evaporation chamber and the condensation chamber, as in a conventional adsorption refrigerator, and This eliminates the need for a complicated switching configuration for alternately supplying cooling water and hot water to the adsorbent heat exchanger incorporated in each of the first and second adsorption / desorption chambers.
The elimination of such switching also simplifies the control configuration for controlling the device, which can reduce the cost of the device, reduce the size of the device, and facilitate maintenance. .

In the embodiment of the present invention, various gases can be used as the working gas and the regeneration gas, and various liquids can be used as the refrigerant liquid.

The level of the pressure in the gas circulation path and the desorption zone during operation may be determined in accordance with various conditions such as a required condition on the output side and a condition on the structure of the apparatus.

[2] The invention according to claim 2 specifies an embodiment suitable for carrying out the invention according to claim 1, and the feature is that air is used for the working gas, and The point is that water is used for the refrigerant liquid.

That is, since air and water do not require much labor and cost to obtain, and do not cause a large problem even if they leak, air is used for the working gas and water is used for the refrigerant liquid. Using a non-condensable gas other than air as the working gas, or using a liquid other than water as the refrigerant liquid, is more excellent in cost, handling, safety, and versatility. Become something.

Further, if water is used as the refrigerant liquid, the refrigerant vapor desorbed into the regeneration gas in the desorption region becomes mere water vapor, so that the used regeneration gas passed through the desorption region can be easily treated. Become.

[3] The invention according to claim 3 specifies an embodiment suitable for carrying out the invention according to claim 2, and is characterized in that air as working gas in the gas circulation path is used. Between the normal operation of circulating the air and the outside air operation of temporarily passing external air through the gas circulation path where the output heat exchanger is disposed.

That is, according to this configuration, air as a working gas is circulated in the gas circulation path while being adsorbed and desorbed by the adsorption rotor and cooled by the cooler, and the fluid to be cooled is cooled by the output heat exchanger. In addition to the above-mentioned operation (the above-described normal operation), when the temperature of the external air is low, the external air is temporarily passed through the portion of the gas circulation path where the output heat exchanger is disposed, thereby passing through the output heat exchanger. A so-called free cooling operation (the above-described outside air operation) in which heat is exchanged between the external air and the fluid to be cooled to cool the fluid to be cooled can be selected and executed. In this respect, the functionality is further improved, and also in terms of energy saving. It will be even better.

The outside air operation in which the external heat passing through the output heat exchanger exchanges heat with the fluid to be cooled to cool the fluid to be cooled is performed in such a manner that the spraying of water as the refrigerant liquid is stopped.
Alternatively, water may be sprayed as a refrigerant liquid, and the cooling of the cooling target fluid may be promoted by removing vaporization heat accompanying the evaporation of the sprayed water. Either form may be selected depending on (temperature).

Incidentally, when a gas other than air is used as the working gas, the normal operation of circulating the working gas in the gas circulation path and the temporary supply of the external air to the portion of the gas circulation path where the output heat exchanger is disposed. It is conceivable to make it possible to switch the operation to the outside air operation to be passed.However, in this case, it is necessary to recover the working gas when the outside air operation is performed, which complicates the apparatus configuration and handling. The above-described configuration that allows the switching of the outside air operation to be performed in a mode using air as the gas is more advantageous.

[4] The invention according to claim 4 is the invention according to claims 1 to
The present invention specifies an embodiment suitable for carrying out the invention according to any one of the above items 3, and is characterized in that air heated by a heating means is used as the regeneration gas.

In other words, according to this configuration, the regeneration gas can be easily generated only by heating the surrounding air, thereby reducing cost and cost compared to using a gas other than air as the regeneration gas. It will be more excellent in handling, safety and versatility.

If heated air is used as the regeneration gas and water is used as the refrigerant liquid, the used regeneration gas discharged from the desorption zone becomes mere high-humidity and high-temperature air. Gas treatment becomes very easy,
It is also possible to exhaust the used regeneration gas to the outside as it is, which further improves cost, handling, safety, and versatility.

[5] The invention according to claim 5 is the first invention.
The present invention specifies a preferred embodiment for carrying out the invention according to any one of the items (4) to (4), and its feature is that the pressure of the gas circulation path and the desorption region during operation is set to a normal pressure substantially equal to the atmospheric pressure. It is in the point that is.

In other words, according to this configuration, there is no need to provide a vacuum pump or a pressure-resistant airtight structure as in a conventional adsorption refrigerator, and a general-purpose fan is used for circulating working gas and supplying regeneration gas. By being able to do so, the production of the device can be facilitated and the cost of the device can be effectively reduced, and since the operating pressure is normal pressure, handling is difficult.
It will be more excellent in terms of safety and versatility.

Further, when the used regeneration gas discharged from the desorption area is exhausted to the outside, the used regeneration gas can be easily exhausted to the outside at substantially the same pressure as the desorption area. In the case where the switching of the outside air operation can be performed, the switching can be easily performed under the condition that the inside and outside pressures of the gas circulation path are substantially equal.

When the pressure in the gas circulation path and the desorption area during operation is set to a normal pressure substantially equal to the atmospheric pressure, the pressure in the gas circulation path and the desorption area during operation is made lower than the atmospheric pressure (ie, As compared with the case of vacuuming using a vacuum pump, the evaporation temperature of the refrigerant in the evaporation chamber becomes higher and the cooling temperature of the fluid to be cooled becomes higher (for example, about 15 ° C.). Since many applications require relatively high-temperature cooling, increasing the cooling temperature does not impair the usefulness.Rather, low-temperature cooling is mixed with high-temperature heat to achieve the required temperature. Compared to taking the form of cold heat, it is advantageous in terms of energy, for example, in that waste heat at lower temperature can be effectively used as a heat source for desorption.

[6] The invention according to claim 6 relates to claims 1 to
The present invention specifies a preferred embodiment for carrying out the invention according to any one of the above items 5, which is characterized in that the regeneration gas passed through the adsorption rotor in the desorption region is cooled and the regeneration gas is regenerated. It is characterized in that a condenser for condensing the refrigerant vapor in the working gas and a liquid return means for supplying the refrigerant liquid generated by the condensation in the condenser to the spraying means are provided.

In other words, according to this configuration, the desorbed refrigerant contained in the form of vapor in the used regeneration gas discharged from the desorption area is condensed and then reused as the sprayed refrigerant liquid in the evaporation chamber. Compared to a mode in which the desorbed refrigerant in the used regeneration gas is discharged to the outside, the required supply amount of the refrigerant liquid can be significantly reduced, and thus the running cost can be reduced effectively.

[7] The invention according to claim 7 is based on claims 1 to
The present invention specifies a preferred embodiment for carrying out the invention according to any one of 6 above, and its feature is that heat is recovered from the regeneration gas passed through the adsorption rotor in the desorption region, and the heat recovery is performed. Heat recovery and preheating means for preheating the regeneration gas supplied to the desorption region by the recovered heat is provided.

That is, according to this configuration, the heat retained in the used regeneration gas discharged from the desorption area is recovered, and the recovered heat is used for preheating the supplied regeneration gas to the desorption area. The heat loss can be greatly reduced as compared with a form in which the retained heat of the used regeneration gas is discarded to the outside, and the energy can be further improved.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a rotor-type adsorption refrigerator, in which the interior of a rotor accommodating chamber 1 is divided into an adsorption-side chamber 3 and a desorption-side chamber 4 by a partition 2, and is provided with an adsorbent X such as zeolite or activated carbon. The disk-shaped air-permeable suction rotor 5 is straddled between the suction-side chamber 3 and the desorption-side chamber 4 so that each part of the rotor alternately passes through the suction-side chamber 3 and the desorption-side chamber 4 by its rotation. 1 housed.

In other words, a portion of the rotor rotation region located in the suction side chamber 3 is referred to as an adsorption region a, and a portion located in the desorption side chamber 4 is referred to as a desorption region b. And the attachment / detachment area b are formed side by side in the direction of rotation of the rotor.

Reference numeral 6 denotes a gas circulation path in which the suction side chamber 3 is part of a circulation path and air A serving as a working gas is circulated by a circulation fan 7, and is upstream of the adsorption rotor 5 in the air circulation direction in the adsorption side chamber 3. The lower part (in this example, the lower part) is an evaporating chamber 8, and the evaporating chamber 8 is provided with an output heat exchanger 9 for cooling cold water C as a cooling target fluid and a spray pump 10. A spraying tool 12 for spraying water W as a refrigerant liquid supplied from a bottom tank portion through a spraying supply path 11 into the evaporation chamber 8 is provided.

In the gas circulation path 6 outside the adsorption side chamber 3, the cooling water R circulated between the cooling tower 13 and the external air Ao as a heat radiation source cools the passage air A as working gas. A cooler 14 is provided.

That is, the gas circulation path 6 is provided in the adsorption area a
And a cooler 14 for cooling the air A passing through the suction rotor 5 in the suction area a, and an evaporating chamber 8 for spraying water W by the sprayer 12 on the air A cooled by the cooler 14.
And the air A is circulated in that order.

On the other hand, in the desorption side chamber 4, the external air Ao was supplied to the desorption area b in the room by the regeneration fan 15 and passed through the adsorption rotor 5, and passed through the desorption area b. A regeneration gas exhaust passage 17 for discharging the external air Ao 'to the outside of the room is connected to the regeneration gas supply passage 16, and the external air Ao to be supplied to the desorption area b is supplied to another device (for example, a power generation micro unit). An exhaust heat heater 18 for heating by low-temperature exhaust heat from a gas turbine or the like is provided, and the external air Ao 'heated by the heater 18 is supplied as ventilation gas to the desorption zone b as a regeneration gas.

In the present embodiment, each of the gas circulation path 6 and the desorption side chamber 4 is operated under normal pressure substantially equal to the atmospheric pressure, and the circulation fan 7 and the regeneration fan 15 are operated.
Uses a general specification fan.

Further, the adsorption rotor 5 is provided so as to divide the respective chambers of the adsorption side chamber 3 and the desorption side chamber 4 into two areas, and circulating air as working gas in each of the adsorption area a and the desorption area b. The entire amount of A and the entire amount of the heated external air Ao 'as the regeneration gas are passed through the adsorption rotor 5.

That is, in this rotor-type adsorption refrigerator (see FIG. 2), the air A (point A in FIG. 2) which has become highly humid due to the evaporation of the spray water W in the evaporation chamber 8 is adsorbed in the adsorption area a. By passing through the rotor 5, the water vapor is adsorbed and removed (that is, dehumidified) by the adsorbent X in the rotor portion in the adsorption area a, and the air A is converted into low-humidity high-temperature air (point B in FIG. 2)
Further, by cooling the air A by the cooler 14, the temperature of the air A (point B in FIG. 2) heated by the heat of adsorption generated by the adsorption and the heat transferred from the desorption zone b is lowered ( C point in FIG. 2).

Then, water W is sprayed again in the evaporation chamber 8 on the air A (point C in FIG. 2) which has been made low in humidity and low in temperature in this manner, so that the spray water W is dispersed in a low-temperature atmosphere with a low steam partial pressure. Evaporates efficiently, and the cold water C to be cooled in the output heat exchanger 9
Is efficiently cooled, and the air A (point A in FIG. 2) whose temperature has been lowered by the removal of the vaporization heat is sent to the adsorption area a and passed through the adsorption rotor 5, so that the adsorbent is cooled by the low-temperature air A. To exhibit higher adsorption efficiency, thereby efficiently removing (dehumidifying) water vapor from the air A by the adsorption.

On the other hand, in parallel with this air circulation, the desorption zone b
Then, the heated external air Ao 'supplied as a regeneration gas
Is passed through the adsorption rotor 5 so that the adsorbent X in the rotor portion that has shifted from the adsorption area a to the desorption area b by the rotation of the rotor
The adsorbed water vapor is desorbed from the heated external air Ao '(that is, the adsorbent absorbed in the adsorption area a), and the adsorbent X regenerated by the desorption is transferred to the adsorption area a again by the rotation of the rotor.

That is, by the rotation of the adsorption rotor 5, the above-mentioned adsorption in the adsorption area a and the above-mentioned desorption in the desorption area b are continuously performed in parallel, so that the cooling water C to be cooled in the output heat exchanger 9 is Enables continuous cooling.

Reference numeral 19 denotes a condenser interposed in the regeneration gas exhaust passage 17, and reference numeral 20 denotes a preheater interposed in the regeneration gas supply passage 16, and a circulation path 2 between the condenser 19 and the preheater 20.
By circulating the heating medium L through 1, the retained heat is recovered from the heated external air Ao ′ discharged from the desorption side chamber 4 as the used regeneration gas by condensing the desorbed steam in the air Ao ′. The external air Ao to be supplied to the desorption region b as a regeneration gas is preheated by the recovered heat.

Reference numeral 22 denotes a spray water W which returns condensed water W (ie, condensed refrigerant) generated in the condenser 19 to the bottom tank of the evaporation chamber 8.
A return liquid passage 23 for reuse in the return liquid passage 23 is a return liquid pump interposed in the return liquid passage 22.

Reference numeral 24 denotes an outside air intake passage for taking in the external air Ao to the portion of the gas circulation passage 6 where the output heat exchanger 9 is disposed (ie, the lower portion of the adsorption side chamber 3) by using the circulation fan 7; Uses this external air Ao for gas circulation 6
Among the outside air discharge passages for discharging the air from the arrangement portion of the output heat exchanger 9 to the outside, and when the external air Ao is at a low temperature, the dampers V1, V2 of the outside air intake passage 24 and the outside air discharge passage 25
And the circulation fan 7 allows the low-temperature external air Ao to temporarily pass through the portion where the output heat exchanger 9 is disposed, thereby cooling the water W to be cooled by heat exchange with the passing external air Ao. Can be appropriately performed.

Reference numeral 26 denotes a supply path for water W as a refrigerant liquid,
Is a supply valve.

[Another Embodiment] Next, another embodiment will be described.

The suction rotor 5 is not limited to a disk-shaped rotor that allows gas to pass in the direction of the axis of rotation as in the above-described embodiment, but may be a cylindrical rotor that allows gas to pass in the radial direction, or a sheet thickness. An endless (ring-shaped) sheet-shaped rotor that allows gas to pass in the direction may be used, and various types of adsorbent X such as activated carbon and zeolite can be used.

The working gas A is not limited to air, and various gases can be used. The refrigerant liquid W can be not limited to water but various liquids. Further, the cooling target fluid C may be a liquid other than water, and may be a gas in some cases.

The spraying means for spraying the refrigerant liquid W to the working gas A in the evaporating chamber 8 is not limited to the multi-nozzle type spraying device 12 as shown in the above-described embodiment, but various spraying types may be used. For example, a method in which the coolant liquid W overflows from the gutter-like portion, a method in which the coolant liquid W flows down along the outer surface of the flat plate-shaped output heat exchanger 9, or a method in which a large number of small holes formed in the plate are used. A method in which the refrigerant liquid W flows out like rain may be adopted.

The output heat exchanger 9 for cooling the cooling target fluid C by removing the vaporization heat accompanying the evaporation of the sprayed refrigerant liquid W may be of any type, such as a coil or a plate. In some cases, as shown in FIG. 3, a cooling target liquid C (for example, water) itself is sprayed as a refrigerant liquid W in the evaporation chamber 8 to cool the cooling target liquid C (in short, the evaporation chamber 8). 8 as the output heat exchanger 9).

The regeneration gas is not limited to the heated external air Ao ', and various gases can be used.
The specific configuration of the regenerating gas supply means for supplying air to the air supply can be variously changed according to the regenerating gas to be used.

When the regeneration gas is generated by heating, various heat sources such as exhaust heat, combustion heat, electric heat, and solar heat can be used as the heat source.

In the above-described embodiment, heat is recovered from the regeneration gas Ao 'passed through the adsorption rotor 5 in the desorption area b, and the recovered heat is used to preheat the regeneration gas Ao supplied to the desorption area b. The preheating means is a condenser 19, a preheater 20,
Although the circulation path 21 circulates the heat medium liquid L between the condenser 19 and the preheater 20, the regeneration gas Ao 'passed through the adsorption rotor 5 in the desorption area b and is supplied to the desorption area b. The heat recovery / preheating means may be configured using a gas-to-gas heat exchanger that directly exchanges heat with the regeneration gas Ao, and in some cases, the heat recovery / preheating means may be omitted.

In the above-described embodiment, the liquid return means for supplying the refrigerant liquid W generated by the condensation in the condenser 19 to the spraying means 12 is constituted by the liquid return path 22 and the liquid return pump 23. Returning means of a type in which the condensed refrigerant liquid W is returned to the bottom tank portion of the evaporation chamber 8 by its own weight flow may be used. In some cases, the returning liquid means may be omitted and the desorbed refrigerant vapor may be used as the used regeneration gas A. ′ May be discharged outside.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a rotor-type adsorption refrigerator.

FIG. 2 is a psychrometric chart showing a state change of a working gas (air).

FIG. 3 is a configuration diagram of a rotor-type adsorption refrigerator showing another embodiment.

FIG. 4 is a configuration diagram of a conventional adsorption refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 5 Adsorption rotor 6 Gas circulation path 8 Evaporation chamber 9 Output heat exchanger 12 Spraying means 14 Cooler 15, 16, 18 Regeneration gas supply means 18 Heating means 19 Condenser 19, 20, 21 Heat recovery and preheating means 22, 23 Return liquid means a Adsorption area b Desorption area A Working gas, air Ao 'Regeneration gas, heated external air C Cooling target fluid W Refrigerant liquid, water X Adsorbent

Claims (7)

[Claims] An adsorption area and a desorption area are provided in a rotation area of a gas-permeable adsorption rotor provided with an adsorbent, which are arranged side by side in a rotor rotation direction, and a working gas passing through the adsorption rotor in the adsorption area and the adsorption area is cooled. And a vapor circulation path for circulating the working gas in this order over the evaporating chamber for spraying the refrigerant liquid by the spraying means on the working gas cooled by the cooler. An output heat exchanger that cools a cooling target fluid by removing vaporization heat accompanying evaporation of the gas, and a regeneration gas supply unit that supplies a regeneration gas that passes through the adsorption rotor in the desorption region to the desorption region. A rotor adsorption refrigerator. 2. The rotor-type adsorption refrigerator according to claim 1, wherein air is used as the working gas and water is used as the refrigerant liquid. 3. A normal operation in which air serving as a working gas is circulated in the gas circulation path, and an outside air operation in which external air is temporarily passed through a portion of the gas circulation path where the output heat exchanger is disposed. 3. The rotor-type adsorption refrigerator according to claim 2, wherein the switching is possible. 4. The rotor-type adsorption refrigerator according to claim 1, wherein air heated by a heating means is used as the regeneration gas. 5. The rotor type adsorption refrigerator according to claim 1, wherein a pressure in the gas circulation path and the desorption region during operation is set to a normal pressure substantially equal to an atmospheric pressure. 6. A condenser for cooling a regeneration gas passed through the adsorption rotor in the desorption region and condensing refrigerant vapor in the regeneration gas, and a refrigerant liquid generated by condensation in the condenser. And a return liquid supplying means for supplying the liquid to the spraying means. 7. A heat recovery / preheating means for recovering heat from the regeneration gas passed through the adsorption rotor in the desorption region and preheating the regeneration gas supplied to the desorption region by the recovered heat. The rotor-type adsorption refrigerator according to any one of claims 1 to 6.