JP2846586B2 - Absorption refrigeration cycle device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigeration cycle apparatus using an absorbent.

[0002]

2. Description of the Related Art As measures against de-fluorocarbons, a regenerator that has a heating chamber in which an absorbing solution is filled and heated by a heating source, and that evaporates part of the absorbing solution, and a condensing heat exchanger through which cooling water passes. A condenser for cooling and liquefying the vaporized refrigerant generated in the regenerator, an evaporator for evaporating the liquefied refrigerant evaporated in the condenser under reduced pressure, and an absorption heat exchanger through which cooling water passes. The absorber that absorbs the vaporized refrigerant evaporated by the evaporator into the absorbent, the absorbent pump that transfers the absorbent from the absorber to the heating chamber, and the cooling that passes through the heat exchanger for absorption and the heat exchanger for condensation. A cooling tower that cools the cooling water by flowing water downward from above, a cooling water sump provided below the cooling tower to store the cooling water, a drain valve for draining the cooling water in the cooling water sump, and the cooling water sump A cooling water pump that transfers the cooling water to the absorption heat exchanger, Serial heating source, said absorption liquid pump, the drain valve, and we the absorption refrigerating cycle apparatus and a driving controller for controlling the coolant pump was fabricated.

In this absorption refrigeration cycle apparatus, when the refrigerant evaporates in the evaporator, heat is taken from a heat medium (water or the like) flowing in the evaporator, and the heat medium is cooled. Then, by performing heat exchange between the cooled heat medium and indoor air or air in the heat insulating storage, indoor cooling or internal storage can be performed.

[0004]

In the above absorption refrigeration cycle apparatus, the operation controller immediately opens the drain valve when the cooling operation is stopped in order to replace the contaminated cooling water with clean cooling water. The cooling water in the reservoir is drained (water is supplied after draining). In addition, if the cooling water becomes dirty due to neglected replacement of the cooling water for a long period of time, the proliferation of radionella bacteria and the like will be caused. However, it takes about 15 minutes to change the cooling water,
The inventors have found that there is a point to be improved that the user cannot endure the heat when the cooling operation is stopped by the timer because the operation cannot be resumed during the replacement.

An object of the present invention is to provide an absorption-type refrigeration cycle apparatus which limits the operation of replacing cooling water and is excellent in usability.

[0006]

In order to solve the above problems, the present invention employs the following constitution. (1) a regenerator that has a heating chamber in which the absorbing liquid is placed and is heated by a heating source, vaporizes part of the absorbing liquid and separates it into a concentrated absorbing liquid and a refrigerant, and a condenser through which cooling water passes. A heat exchanger is arranged, a condenser for cooling and liquefying the vaporized refrigerant generated in the regenerator, an evaporator for evaporating the liquefied refrigerant liquefied in the condenser under reduced pressure, and an absorber for cooling water passing therethrough. An absorber for disposing a heat exchanger, the vaporized refrigerant evaporated in the evaporator being absorbed by the concentrated absorbent separated by the regenerator, and an absorbent for transferring the absorbent from the absorber to the heating chamber A pump, a cooling tower that cools the cooling water by flowing the cooling water that has passed through the absorption heat exchanger and the condensation heat exchanger from above and below, and is provided below the cooling tower. A cooling water sump and a drain valve for draining cooling water in the cooling water sump A cooling water pump that transfers the cooling water of the cooling water reservoir to the absorption heat exchanger, and an operation controller that controls the heating source, the absorption liquid pump, the drain valve, and the cooling water pump, The operation controller opens the drain valve with a delay of a predetermined time from the stop of the cooling operation.

(2) A regenerator, which has a heating chamber in which the absorbing liquid is put and heated by a heating source, evaporates a part of the absorbing liquid and separates it into a concentrated absorbing liquid and a refrigerant, and a cooling water passes therethrough. A condenser heat exchanger for cooling and liquefying the vaporized refrigerant generated in the regenerator, an evaporator for evaporating the liquefied refrigerant liquefied in the condenser under reduced pressure, and a cooling water passing therethrough. An absorption heat exchanger for absorbing the vaporized refrigerant evaporated in the evaporator into the concentrated absorbent separated by the regenerator, and transferring the absorbent from the absorber to the heating chamber. An absorbing liquid pump, and a cooling tower that cools the cooling water by flowing cooling water that has passed through the absorption heat exchanger and the condensation heat exchanger from above, and provided below the cooling tower. Drain the cooling water in the cooling water reservoir and the cooling water reservoir to store the cooling water Valve, a cooling water pump for transferring the cooling water of the cooling water reservoir to the absorption heat exchanger, and an operation control for controlling the heating source, the absorption liquid pump, the drain valve, and the cooling water pump. The operation controller opens the drain valve with a delay of a predetermined time from the stop of the cooling operation only when the cooling operation based on the timer operation ends.

(3) Having the configuration of the above (1), the predetermined time takes into account the elapsed time when the user gives a restart instruction in a relatively short time when the cooling operation was stopped in the past. To decide.

(4) Having the configuration of the above (1), the predetermined time is determined in consideration of the use time of the cooling water.

(5) It has the structure of the above (1), and the predetermined time is determined in consideration of the outside air temperature.

[0011]

[Action]

[Claim 1] A heating chamber of a regenerator is heated by a heating source, and a refrigerant in an absorbing liquid is vaporized and separated into a concentrated absorbing liquid and a refrigerant. By the condenser heat exchanger through which the cooling water passes,
The condenser cools and liquefies the vaporized refrigerant generated in the regenerator. The evaporator evaporates the liquefied refrigerant liquefied by the condenser under reduced pressure. The absorption heat exchanger through which the cooling water passes causes the absorber to absorb the vaporized refrigerant evaporated in the evaporator into the concentrated absorption liquid separated by the regenerator. The absorbing liquid pump transfers the absorbing liquid from the absorber to the heating chamber.

In the cooling tower, the cooling water that has passed through the absorption heat exchanger and the condensation heat exchanger flows downward from above, and the cooling water is stored in the cooling water reservoir. While flowing, the cooling water exchanges heat with the outside air to radiate heat, and a part of the cooling water evaporates, so that the temperature of the cooling water drops.

When the refrigerant evaporates in the evaporator, heat is taken from the heat medium flowing in the evaporator to cool the heat medium. Then, by performing heat exchange between the cooled heat medium and indoor air or air in the heat insulating storage, indoor cooling or internal storage is performed.

When the cooling operation is stopped and a predetermined time has elapsed since the cooling operation was stopped, the operation controller instructs the drain valve to be in an open state, and performs a cooling water exchange operation. The operation controller does not perform the operation of replacing the cooling water until a predetermined time has elapsed since the cooling operation was stopped.

[Claim 2] When the cooling operation is terminated based on the timer operation, the cooling water exchange work is not performed until a predetermined time has elapsed from the end of the cooling operation.
Further, when the cooling operation is manually terminated, it is considered that the user does not restart the cooling operation in a relatively short time, and the drain valve is opened immediately.

[Claim 3] A predetermined time from when the cooling operation is stopped to when the cooling water is exchanged (when the drain valve is opened) is set to a relatively long time by the user when the cooling operation is stopped in the past. The determination is made in consideration of the elapsed time when the restart instruction is issued in a short time.

[Claim 4] A predetermined time from when the cooling operation is stopped to when the cooling water exchange operation is performed (the drain valve is opened) is determined in consideration of the cooling water usage elapsed time.

[Claim 5] A predetermined time from when the cooling operation is stopped to when the cooling water is replaced (the drain valve is opened) is determined in consideration of the outside air temperature.

[0019]

【The invention's effect】

[Claim 1] The operation controller is configured to open the drain valve with a delay of a predetermined time after the cooling operation is stopped. Therefore, when the cooling operation is stopped, if the user gives an operation start instruction within a predetermined time, the cooling operation can be immediately restarted to maintain the comfort, and the absorption refrigeration cycle apparatus is excellent in usability.

[Claim 2] When the cooling operation is terminated based on the timer operation, the cooling water exchange work is not performed until a predetermined time has elapsed from the end of the cooling operation. For this reason, when the cooling operation is stopped by the timer operation, if the user issues an operation start instruction within a predetermined time, the cooling operation is restarted and the comfort can be maintained, and the absorption refrigeration cycle device is easy to use. Excellent.

When the cooling operation is manually stopped, the user should not restart the cooling operation in a short time, so that there is no problem even if the cooling water is replaced. Thereby, cleanliness of the cooling water can be maintained.

[Claim 3] A predetermined time from when the cooling operation is stopped to when the drain valve is opened is set to a time when the user gives a restart instruction in a relatively short time when the cooling operation is stopped in the past. The configuration is determined in consideration of the elapsed time. For this reason, when the cooling operation is stopped, if the user issues an operation start instruction within a predetermined time determined in consideration of the history of the elapsed time, the cooling operation can be resumed and the comfort maintained. Absorption refrigeration cycle devices are easy to use.

According to a fourth aspect of the present invention, the predetermined time from when the cooling operation is stopped to when the drain valve is opened is determined in consideration of the elapsed time of use of the cooling water. Therefore, when the cooling operation is stopped, if the user issues an operation start instruction within a predetermined time determined in consideration of the elapsed time of use of the cooling water, the cooling operation is restarted and the comfort can be maintained. The absorption type refrigeration cycle device is excellent in usability.

[Claim 5] A predetermined time from when the cooling operation is stopped to when the drain valve is opened is determined in consideration of the outside air temperature. Therefore, when the cooling operation is stopped, if the user gives an operation start instruction within a predetermined time determined in consideration of the outside air temperature, the cooling operation can be resumed and the comfort can be maintained. The refrigeration cycle device is easy to use.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment (corresponding to claims 1 and 3) of the present invention will be described with reference to FIGS. The absorption-type air-conditioning apparatus A employing the configuration of the present invention has a heating chamber 12 in which a low-concentration absorbing liquid (in this embodiment, an aqueous lithium bromide solution) is charged and heated by a gas burner 11. High-temperature regenerator 1 that evaporates the refrigerant (water) and separates it into a medium-concentration absorbent and a refrigerant, and heats the medium-concentration absorbent using heat of condensation of the vaporized refrigerant in high-temperature regenerator 1, A low-temperature regenerator 2 for vaporizing a refrigerant contained in the absorption liquid and separating the refrigerant into a high-concentration absorption liquid and a refrigerant, and a condensing heat exchanger 31 through which cooling water 340 passes are provided. Liquid refrigerant (water) by cooling the vaporized refrigerant (steam) separated by the heat exchanger 2
, A condenser 3 for evaporating the liquid refrigerant (water) liquefied in the condenser 3 under substantially vacuum, and an absorption heat exchanger 34 through which the cooling water 340 passes. Absorber 5 that absorbs the vaporized refrigerant evaporated in step 2 into the high-concentration absorbent obtained in low-temperature regenerator 2, Absorbent pump 6 that transfers the absorbent from absorber 5 to heating chamber 12, and an absorption heat exchanger. The cooling water 340 that has passed through the heat exchanger 34 and the condensing heat exchanger 31 flows downward from above to cool the cooling water 340, and a cooling water reservoir 8 provided below the cooling tower 8 and storing the cooling water 340.
1, a drain valve 70 for draining the cooling water 340 in the cooling water reservoir 81, a cooling water pump 82 for transferring the cooling water 340 in the cooling water reservoir 81 to the heat exchanger 34 for absorption, An operation controller 9 for controlling the cooling water pump 82, the drain valve 70 and the like is provided.

During the cooling operation, the heat medium (cold / hot water) passing through the evaporator 4 is cooled by evaporating the liquid refrigerant (water) in the evaporator 4, and the cooled heat medium is placed indoors. The indoor heat exchanger 7 exchanges heat with air blown into the room to cool the room. Then, the heat medium that has been heated and raised in temperature is cooled again by the evaporator 4. The vaporized refrigerant (water vapor) evaporated by the evaporator 4 is absorbed by the absorber 5 into the high concentration absorbent. At this time, heat of absorption is generated, and the temperature of the absorption liquid rises.
Therefore, in order to increase the absorption capacity of the high-concentration absorbent supplied to the absorber 5, the absorber 5 is provided with an absorption heat exchanger 34 and supplied with cooling water 340.

In the condenser 3, a condensing heat exchanger 31 for liquefying the vaporized refrigerant (steam) generated in the low-temperature regenerator 2 is wound, and the cooling water 340 passing through the absorbing heat exchanger 34 passes therethrough. I do. Then, the cooling water 340 that has been heated by passing through the absorber 5 and the condenser 3 is cooled by the cooling tower 8 provided outdoors, and is supplied to the absorber 5 and the condenser 3 again.

The heating chamber 12 in which the blow-out cylinder 121 erected above is disposed at the upper part is made of stainless steel which is hardly eroded by the absorbing liquid, and heats the low-concentration absorbing liquid by heat generated by gas combustion of the gas burner 11. Gas is supplied to the gas burner 11 from the upstream side by a gas pipe provided with an original solenoid valve 111, a solenoid valve 112, and a gas proportional valve 113, and combustion air is supplied by a combustion blower 114 for combustion.
Further, the heating chamber 12 is provided with a temperature sensor 120 for measuring the temperature of the low-concentration absorbent in the heating chamber 12. The low-concentration absorbing liquid boiling in the heating chamber 12 together with the vaporized refrigerant (steam) together with the high-temperature regenerating vessel 1 constituting the high-temperature regenerator 1
Blow out into 0. The high-temperature, low-concentration absorbent blown into the high-temperature regenerating vessel 10 is supplied to a baffle 10 a
And drops around the blowing cylinder 121 to become a medium-concentration absorbing liquid.

In order to separate the intermediate-concentration absorbing liquid and the liquid refrigerant (water), a partition tube 13 is provided in the high-temperature regenerator 1 between the blow-out tube 121 and the high-temperature regeneration container 10. Then, the refrigerant separated outside the partition tube 13 is cooled on the wall surface of the high-temperature regeneration container 10 to become a liquid refrigerant (water), and is supplied to the condenser 3 through a pipe 14 connected to a lower portion.
The medium-concentration absorbing liquid separated between the inside of the partition tube 13 and the blow-out tube 121 is supplied to the low-temperature regenerator 2 through a medium-concentration absorbing liquid pipe 15 connected to the lower part. An orifice 16 is provided in the middle concentration absorbing liquid pipe 15.

The low-temperature regenerator 2 includes a cylindrical low-temperature regenerating container 20 covering the high-temperature regenerating container 10. It is to be injected toward the part. Since the temperature inside the low temperature regeneration container 20 is lower than the temperature of the high temperature regeneration container 10, the pressure inside the low temperature regeneration container 20 is lower than the pressure of the high temperature regeneration container 10. Therefore, the medium-concentration absorbing solution supplied from the medium-concentration absorbing solution pipe 15 into the low-temperature regenerating container 20 is easily evaporated, and the medium-concentration absorbing solution is supplied to the high-temperature regenerating container 10.
Is injected into the ceiling portion of the container, the medium-concentration absorbent is heated by the peripheral wall of the high-temperature regenerating vessel 10, and the liquid refrigerant (water) evaporates, so that the medium-concentration absorbent becomes a high-concentration absorbent.

The upper part of the low-temperature regeneration container 20 communicates with the upper side of the condensing container 30 in the shape of an annular container through a communication part 301. For this reason, the vaporized refrigerant (steam) evaporated in the low-temperature regeneration container 20 is supplied into the condensing container 30 through the communication part 301. On the other hand, the high concentration absorbing solution is
And is supplied to the absorber 5 through the high-concentration absorbent pipe 21 connected to the lower part of the low-temperature regeneration container 20.
A ceiling plate 22 is provided above the low-temperature regeneration container 20, and a gap 201 through which water vapor passes is provided between the outer peripheral end of the ceiling plate 22 and the low-temperature regeneration container 20.

As described above, the condenser 3 includes the condensing container 30 having an annular shape. Inside of the condensation container 30,
A condensing heat exchanger 31 for cooling and liquefying the vaporized refrigerant (water vapor) in the condensing container 30 is provided. The condensing heat exchanger 31 is an annular coil, in which cooling water 3
40 flows. Then, from the low-temperature regenerator 2 to the condensing container 30
The vaporized refrigerant supplied to the inside is cooled by the condensing heat exchanger 31 to become a liquid refrigerant (water).

In the condensing container 30, a refrigerant is supplied from the high temperature regenerator 1 through the pipe 14 from the lower side of the container, and re-boils due to a difference in pressure (a low pressure of 70 mmHg in the condensing container 30). Then, the vaporized refrigerant and the liquefied refrigerant are mixed and discharged into the condensing container 30. Also, the condensation vessel 3
0 is connected to a refrigerant pipe 32 for guiding the liquid refrigerant to the evaporator 4. The refrigerant pipe 32 is provided with a refrigerant valve 321 that opens when energized. During the valve opening, liquid refrigerant (water) is supplied to the evaporator 4 from the condensation container 30.

The evaporator 4 is provided below the condensing container 30 together with the absorber 5, and includes an annular absorbing and absorbing container 50 disposed around the low-temperature regeneration container 20. An evaporation heat exchanger 33 for evaporating the liquid refrigerant (water) supplied from the condenser 3 is disposed outside the inside of the evaporation absorption container 50. The evaporating heat exchanger 33 is an annular coil, through which a heat medium (cold and hot water) supplied to the indoor heat exchanger 7 flows. And, from the condenser 3 to the refrigerant pipe 3
The liquid refrigerant (water) supplied via 2 is sprayed onto the evaporating heat exchanger 33 from a refrigerant spraying tool 322 disposed above the evaporating heat exchanger 33.

The interior of the evaporation absorption container 50 is substantially vacuum (about 6.5).
mmHg), the boiling point is low, and the liquefied refrigerant sprayed on the evaporating heat exchanger 33 is in a state of being very easily evaporated. Then, the liquid refrigerant (water) sprayed on the evaporating heat exchanger 33 evaporates from the heat medium flowing in the evaporating heat exchanger 33 by evaporating heat. As a result, the heat medium (cold and hot water) flowing in the evaporating heat exchanger 33 is cooled. Then, the cooled heat medium is guided to the indoor heat exchanger 7 and exchanges heat with air blown into the room to cool the room.

The absorber 5 is, as described above, an evaporative absorption container 5
0 is provided. Then, the absorber 5 is provided with the high-concentration absorbent pipe 2.
An absorption heat exchanger 34 for cooling the high-concentration absorption liquid supplied from 1 is arranged. This absorption heat exchanger 34
The cooling water 340 supplied to the condensing heat exchanger 31 flows inside the coil. On the other hand, on the upper part of the absorption heat exchanger 34, there is disposed an absorption liquid disperser 36 for dispersing the high concentration absorption liquid supplied from the high concentration absorption liquid pipe 21 onto the absorption heat exchanger 34.

The high-concentration absorbing liquid sprayed on the absorption heat exchanger 34 falls from above to below while the vaporized refrigerant (steam) evaporated from the evaporation heat exchanger 33 into the evaporation absorption container 50. Absorb. Therefore, the absorption heat exchanger 34
Is connected to a low-concentration absorbent pipe 35 for supplying the low-concentration absorbent to the heating chamber 12. The low-concentration absorbent pipe 35 is provided with an absorbent pump 6 for transferring the low-concentration absorbent from the condensation vessel 30 in a substantially vacuum state to the heating chamber 12.

In the present embodiment, the absorbent pump 6 is a centrifugal pump using a DC brushless motor with a maximum power consumption of 120 W, and is provided with a Hall IC (not shown) for detecting the number of revolutions. The operation controller 9 performs feedback control of the absorption liquid pump 6 so that the rotation speed matches the detection temperature H detected by the temperature sensor 120.

The indoor heat exchanger 7 exchanges heat between the heat medium passing therethrough and the air blown into the room. The heat medium that has passed through the indoor heat exchanger 7 passes through the cistern 72,
It is sent to the heat exchanger for evaporation 33 by the electric pump 37 for cold and hot water, and circulates between the indoor heat exchanger 7 and the heat exchanger for evaporation 33.

The cistern 72 includes a high level switch 721 for detecting a high water level and a low level switch 722 for detecting a low water level, as shown on the right side of FIG. Is done. Further, a water supply pipe 73 for supplying tap water to the inside is connected to the cistern 72, and the water supply pipe 73 is provided with a water supply valve 731. Further, a pipe 74 for guiding overflowed water to the cooling water reservoir 81 is connected to an upper portion of the cistern 72.

On the other hand, the indoor heat exchanger 7 is used to forcibly exchange heat between the heat medium flowing through the indoor heat exchanger 7 and the air blown into the room, and to blow the air after the heat exchange into the room. An indoor electric fan 71 is provided.

In the cooling tower 8, the cooling water 340 that has passed through the absorption heat exchanger 34 and the condensation heat exchanger 31 flows downward from above, and exchanges heat with the outside air while the cooling water 340 flows. It is an evaporative type in which heat is dissipated and a part evaporates to cool the cooling water 340 by heat of vaporization. This cooling tower 8
Is composed of a spraying unit 83 for spraying cooling water above, an evaporating unit 84 having a large area through which the cooling water 340 flows, and a collecting unit 85 for collecting the cooling water passing through the evaporating unit 84.

Further, at the position of the evaporating section 84 of the cooling tower 8, an outdoor electric fan 86 for generating an air flow in the evaporating section 84 and promoting the evaporation and cooling of the cooling water in the evaporating section 84 is provided. .

The cooling water 340 cooled in the cooling tower 8 is led to a cooling water reservoir 81 provided at a lower part, and the cooling water
From 1, the cooling water 340 is supplied to the absorption heat exchanger 34 and the condensation heat exchanger 31 by the cooling water pump 82.

In the lower part and the upper part in the cooling water reservoir 81, respectively,
Lo level switch 811, Hi level switch 812
Are arranged. The cooling water 340 in the cooling water reservoir 81 is L
When the cooling water 340 is at or above the Hi level switch 812, the Lo level switch 811 is turned on.

A water supply valve (not shown) is provided in a water pipe (not shown) for guiding the cooling water 340 (tap water) to the cooling water reservoir 81. When the valve is opened, the cooling water 340 is cooled. It is refilled in the water reservoir 81. It takes about 8 minutes (normal time) to refill water from the empty state to the position of the Hi level switch 812.

An outdoor electric fan 86 for promoting heat exchange is disposed at the position of the evaporating section 84 of the cooling tower 8. The outdoor electric fan 86 generates an air flow in the cooling tower 8. This is for promoting cooling of the cooling water 340 in the cooling tower 8.

Reference numeral 151 denotes a high-temperature regenerator 1 to a low-temperature regenerator 2
A high-temperature heat exchanger that exchanges heat between the medium-concentration absorbent flowing into the heating chamber 12 and the low-concentration absorbent flowing from the absorber 5 to the heating chamber 12,
The medium concentration absorbent flowing from the high temperature regenerator 1 to the low temperature regenerator 2 is cooled, while the low concentration absorbent flowing from the absorber 5 to the heating chamber 12 is heated.

A low-temperature heat exchanger 211 exchanges heat between the high-concentration absorbent flowing from the low-temperature regenerator 2 to the absorber 5 and the low-concentration absorbent flowing from the absorber 5 to the heating chamber 12. This cools the high-concentration absorbing liquid flowing from the absorber to the absorber 5 and conversely heats the low-concentration absorbing liquid flowing from the absorber 5 to the heating chamber 12.

Next, when the user turns off the cooling operation switch (not shown) or when the timer operation time has expired, the operation of the absorption type cooling and heating apparatus A (the operation of the microcomputer of the operation controller 9). Will be described with reference to the flowchart shown in FIG.

In step s1, it is determined whether or not the start of operation has been instructed by timer operation or manual operation of the operation switch. If the start of operation has been instructed (YES), the flow proceeds to step s2. The cooling water exchange operation is completed (step s1).
0) Later, the process also proceeds to step s2 when the operation start is instructed. In step s2, the maximum values of the clock times t, t,... T from the last five cooling operations to the restart operation stored in the E ² PROM (not shown) are determined, and this maximum value is determined by the predetermined time t. ₀ {However, the predetermined time t ₀ is 5 minutes <t ₀ <30 minutes}
And proceed to step s3. When the data amount is small (for example, when the number is less than 5), t ₀ is a standard value 標準 for example, 15
Set to Classification.

At step s3, the following cooling operation is started. [Cooling operation] The source electromagnetic valve 111 and the electromagnetic valve 112 are opened, the gas proportional valve 113 is in the ignition opening state, the ignition device is operated, and the combustion blower 114 is instructed to be at the ignition speed, and the gas burner 11 is operated. Put in combustion state.

The operation controller 9 starts the absorbent pump 6 when the detected temperature H reaches 100 ° C., and during the cooling operation,
Feedback control is performed so that the absorbent pump 6 rotates at a set rotation speed corresponding to the detected temperature H.

In step s4, it is determined whether or not the operation stop is instructed by the timer operation or the manual operation of the operation switch. If the operation stop is instructed (YES), the process proceeds to step s5. When the operation stop is not instructed (N
O) returns to step s3 to continue the cooling operation. In step s5, while measuring the time t, the dilution operation shown below is started, and the process proceeds to step s6.

[Dilution operation] As the detected temperature H decreases, the rotation speed of the absorbing liquid pump 6 is reduced, and when the detected temperature H decreases to a temperature at which crystallization of the absorbing liquid does not occur (for example, 110 ° C.), the absorption is reduced. The dilution operation is terminated by instructing that the operations of the liquid pump 6, the combustion blower 114, the cooling water pump 82, and the outdoor electric fan 86 are stopped.

During the dilution operation, the electric pump for cold / hot water 3
7 and the indoor electric fan 71 are stopped, and the operation of the absorbent pump 6 is continued, and the combustion blower 114, the cooling water pump 82, and the outdoor electric fan 86 are continuously operated to cool the absorbent. The absorption of the vaporized refrigerant is maintained so that a low-concentration absorbent is generated.

At step s6, the counted time t is equal to the predetermined time t.
It is determined whether or not it is less than ₀ , and the measured time t <the predetermined time t ₀
In the case of (YES), the process proceeds to step s7. If the measured time t ≧ the predetermined time t ₀ (NO), the process proceeds to step s9 after the dilution operation is completed. If the process has been completed, the process immediately proceeds to step s9. At step s7, it is determined whether or not an operation start has been instructed, and if an operation start has been instructed (YES).
If the dilution operation is in progress, the dilution operation is interrupted and the step s
Proceed to step 8 if the dilution operation has been completed.
Proceed to 8. If not instructed (NO), step s
Return to 6.

At step s8, the counting of the clock time t is stopped. If the clock time t> 5 minutes, the current clock time t is set to E.
² Store in PROM and return to step s2. In addition, E ² P
Old data in the ROM is rewritten with new data by overwriting.

In step s9, the following replacement operation of the cooling water 340 is performed. During the cooling water exchange operation (step s9), if an operation start instruction is issued when the timed time t <30 minutes, the timed time t is stopped and the current timed time t is stored in the E ² PROM. I do.

[Cooling Water 340 Replacement Operation] Operation Controller 9
Is a drain valve 7 for draining the cooling water 340 in the cooling water reservoir 81.
0 is instructed to open the valve. When a predetermined time (for example, three minutes) elapses after detecting the OFF state of the Lo level switch 811, the cooling water 3
Assuming that 40 is empty, the drain valve 70 is instructed to be closed. Next, the water supply valve 731 is instructed to open, and the cooling water 340 is supplied from the tap water to the cistern 72. When the cistern 72 becomes full, the cooling water 340 overflows and is introduced into the cooling water reservoir 81 via the pipe 74. The water level rises.

At step s10, the Hi level switch 8
The end of replacement is determined based on whether or not the water supply valve 12 is turned on. If the water supply valve 7 is turned on (YES), the process returns to step s1. If not, the process returns to step s9.
31 is kept open.

Next, advantages of the absorption type air conditioner A of this embodiment will be described. [A] The maximum value of the clock times t,... T (for five times) when the user gives a re-operation instruction within a relatively short time {within 30 minutes} when the cooling operation was stopped in the past, it is configured to the predetermined time t ₀ until opening the drain valve 70 during the cooling operation stopped. That is, if when the timer operation and manual cooling operation is stopped, the length {dilution operation for a predetermined time t ₀ until it opens the drain valve 70 to start exchanging operation of the cooling water 340 is completed Since｝ is determined based on the usage pattern of the user, the chance of encountering the operation restart prohibition state due to the cooling water exchange during the operation restart operation is significantly reduced, and the usability is excellent.

In this case, the operation for restarting the operation is delayed, and the measured time t <the predetermined time t _0, and the cooling water exchange operation is performed. ｝, Next time, the current time t is the predetermined time t ₀
{However, since t ₀ <30 minutes}, it is possible to prevent the operation restart prohibition state due to the cooling water exchange from being encountered at the time of the next operation restart operation.

[A] When the timer operation or the cooling operation is manually stopped, the time until the user determines that the user feels hot and decides to restart the operation and operates the operation switch is the same as that of the same user. Variations may occur due to differences in the distance between the user and the location of the control box where the switches are installed, as well as physical conditions. However, since the maximum value of the clock times t for the past five times is set to the predetermined time t ₀ , even if the operation for restarting the operation is slightly delayed due to the distance or the physical condition, the operation restart prohibition state is not encountered.

(C) In step s2, when reading out the clock times t, t,... T stored in the E ² PROM, if the data amount is small (for example, less than 5), the predetermined time t
_In this configuration, ₀ is set to a standard value {for example, 15 minutes}. For this reason, even if a relatively short period of time even with a small track record of the case was subjected to re-driving instructions it is possible to secure a sufficient predetermined time t _0, operation resume operation by the remote and poor physical condition of the distance is somewhat delayed, No resumption of operation.

Next, a second embodiment of the present invention will be described.
(Corresponding to claim 3) will be described based on FIG. 1, FIG. 2, and FIG. Absorption type air conditioner B employing the configuration of the present invention
Is different from the first embodiment in the following configuration.

The average value of the clock times t,... T (for five times) when the user gives a re-operation instruction within 30 minutes when the cooling operation is stopped in the past timer operation is determined, and this average value is calculated. the added value of 5 minutes, and the predetermined time t ₀ until opening the drain valve 70 during this cooling operation timer is stopped.

As in the first embodiment, when the user turns off the cooling operation switch (not shown) or when the timer operation time expires, the operation of the absorption type air conditioning system B (the microcontroller of the operation controller 9) is started. The operation of the computer will be described with reference to the flowchart shown in FIG.

In step S1, it is determined whether or not an operation start has been instructed. If the operation start has been instructed (YES), the flow proceeds to step S2. The process also proceeds to step S2 when the operation start is instructed after the completion of the cooling water exchange operation (step S11) and the process proceeds to step S1. In step S2, E ²
The average value of the past five times t, t,... T stored in a PROM (not shown) is obtained, and a predetermined time {for example, 5 minutes} is added to this average value to obtain a predetermined time t ₀ { The predetermined time t ₀ is set to 5 minutes <t ₀ <30 minutes, and the process proceeds to step S3. Note that while the data amount is small {for example, less than 5}, t ₀
Is set to a standard value {for example, 15 minutes}.

In step S3, the above-described cooling operation is started. In step S4, it is determined whether or not an operation stop by manual operation of the operation switch has been instructed. If the operation stop has been instructed (YES), the dilution operation described above is performed, and then the process proceeds to step S10. If the operation stop is not instructed (NO), the process proceeds to step S5.

In step S5, it is determined whether or not an operation stop by a timer has been instructed. If the operation stop has been instructed (YES), the flow proceeds to step S6. If the operation stop by the timer is not instructed (NO), the process returns to step S3 to continue the cooling operation.

In step S6, the counting of the time t is started.
Then, the process proceeds to step S7. At step S7, the time t
Is a predetermined time t₀It is determined whether the time is less than
Predetermined time t₀In the case of (YES), the process proceeds to step S8.
Also, timed time t ≧ predetermined time t ₀In the case of (NO),
To the step S10 after the completion of the dilution operation.
If so, the process proceeds to step S10.

In step S8, it is determined whether or not operation start has been instructed. If operation start has been instructed (YES),
If the dilution operation is being performed, after the dilution operation is stopped, the above-described cooling operation is started and the process proceeds to step S9. If the dilution operation is already completed, the process directly proceeds to step S9. If not instructed (NO), the process returns to step S7.

In step S9, the counting of the clock time t is stopped, and if the clock time t> 5 minutes, the current clock time t is set to E.
² Store in PROM and return to step S2. In addition, E ² P
The old data in the ROM is rewritten with new data by overwriting.

In step S10, the above-described cooling water 340
Perform the replacement operation. In step S10,
When the operation start instruction is issued when the clock time t <30 minutes, the clock time t is stopped, and the current clock time t is set to E.
² Store in PROM.

At step S11, the Hi level switch 8
The end of replacement is determined based on whether or not 12 has been turned on. If it has been turned on (YES), the process returns to step S1. If it has not been turned on (NO), the process returns to step S10, and the water supply valve 731 is kept open.

Next, advantages of the absorption type air conditioner B of this embodiment will be described. [D] When the cooling operation is manually stopped, there is a possibility that the cooling operation is restarted in a relatively short time of about 30 minutes due to reasons such as a decrease in inside and outside air temperature and a user going out. Few. In addition, when the cooling operation is stopped by the timer, the timer simply stops after the time-up, and thus there is a high possibility that the cooling operation is restarted in a relatively short time.

In this embodiment, only when the cooling operation is stopped by the timer {YES in step S5}, the drain valve 7
This is a configuration in which the time from when valve 0 is opened until the start of replacement of cooling water 340 is delayed. For this reason, when restarting the timer cooling operation stop, the opportunity to encounter the operation restart prohibition state due to cooling water exchange is significantly reduced and the usability is excellent, and when the cooling operation is stopped manually, the predetermined time t ₀ If not necessary to provide} since immediately drain valve 70 after the dilution operation end is opened, as compared with the case where always at operated again providing a predetermined time t _0, it is possible to maintain the cooling water 340 clean.

[E] An average value of the past five times t, t,... T stored in the E ² PROM is determined, a predetermined time {for example, 5 minutes} is added to the average value, and the added value is calculated. A predetermined time t ₀ until the drain valve 70 is opened when the cooling operation is stopped this time is set such that the predetermined time t ₀ is 5 minutes <t ₀ <30 minutes.

That is, when the cooling operation is stopped by the timer, the length of the predetermined time t _{0 from} when the drain valve 70 is opened and the operation of replacing the cooling water 340 is started ｛the dilution operation is completed. Since the case (2) is determined based on the usage pattern of the user, the chance of encountering the operation restart prohibition state due to the cooling water exchange during the operation restart operation is significantly reduced, and the usability is excellent.

[0081] Incidentally, since by adding a predetermined time {e.g. 5 minutes} to the average value, even significant long count time t is the one-off, because it does immediately have a predetermined time t _0, the predetermined time t ₀ is not unnecessarily extended, and the cleanliness of the cooling water 340 can be ensured.

In this case, when the cooling operation is stopped by the timer, the operation restart operation is delayed, and when the time count t <predetermined time t ₀ , the cooling water exchange operation is performed and the operation restart prohibition state is set. When the dilution operation has been completed, the current time t is reflected next time, which contributes to prevention of encountering the operation restart prohibition state due to the cooling water exchange.

Next, a third embodiment of the present invention (Claim 1,
(Corresponding to claim 3 and claim 5) will be described with reference to FIG. 1, FIG. 2, and FIG. The absorption-type air conditioner C employing the configuration of the present invention is different from the first embodiment in the following configuration.

The average value of the measured times t,... T (for five times) when the user gives a re-operation instruction within 30 minutes when the cooling operation is stopped in the past timer operation is determined. The value determined in consideration of the outside air temperature K is set to a predetermined time t ₀ until the drain valve 70 is opened when the cooling operation is stopped this time.
And

As in the first embodiment, when the user turns off the cooling operation switch (not shown) or when the timer operation time has expired, the operation of the absorption type air conditioner C (microcontroller of the operation controller 9) is started. The operation of the computer will be described with reference to the flowchart shown in FIG.

At step st1, it is determined whether or not the start of operation has been instructed by timer operation or manual operation of the operation switch. If the start of operation has been instructed (YES), the process proceeds to step st2. The cooling water exchange operation is completed (step s).
When the operation start is instructed after t10) and the process proceeds to step st1, the process also proceeds to step st2.

At step st2, the above-described cooling operation is started. In step st3, it is determined whether or not the operation stop is instructed by the timer operation or the manual operation of the operation switch. If the operation stop is instructed (YES), the process proceeds to step st4. When the operation stop is not instructed (N
O) returns to step st2 and continues the cooling operation.

At step st4, the outside temperature K is detected, and at the same time, the counting of the clock time t is started, the dilution operation is started, and the process proceeds to step st5. In step st5,
An average value of the past 10 times of time t, t,... T stored in an E ² PROM (not shown) is determined, and a predetermined time t ₀ is determined based on the average value and the outside air temperature K. The predetermined time t ₀ is 5 minutes <t ₀ <30 minutes｝, and the process proceeds to step st6.

For example, when the outside air temperature K is 25 ° C., the predetermined time t ₀ is set as an average value, and when the outside air temperature K is increased or decreased by 1 ° C. from 25 ° C., the average value is increased or decreased by 3 minutes to obtain the predetermined time t ₀ . However, the predetermined time t ₀ is 5 minutes <t ₀ <30 minutes}. If the data amount is small (for example, less than 10), the average value is set to a standard value {for example, 15 minutes}.

In step st6, it is determined whether or not the counted time t is less than a predetermined time t ₀ , and the counted time t <the specified time t
_{If it is 0} (YES), the process proceeds to step st7. If the measured time t ≧ the predetermined time t ₀ (NO), the process proceeds to step st9 after the end of the dilution operation. If the process has already been completed, the process immediately proceeds to step st9.

At step st7, it is determined whether or not an operation start has been instructed, and if an operation start has been instructed (YES).
If the dilution operation is being performed, the dilution operation is interrupted (if the dilution operation is being performed) and the process proceeds to step st8. If the dilution operation is completed, the process proceeds to step st8. If not instructed (NO), the process returns to step st6.

[0092] In step st8, to stop the counting of the time t, if the measured time t> 5 minutes, stores the current measured time t to E ² PROM, the flow returns to step st2. In addition, E
² Old data in the PROM is rewritten with new data by overwriting.

At step st9, the above-described exchange operation of the cooling water 340 is performed. In step st9, when the operation start instruction is issued when the time t is less than 30 minutes, the counting of the time t is stopped and the current time t is counted.
Is stored in the E ² PROM.

At step st10, the end of the replacement is determined based on whether or not the Hi level switch 812 has been turned on. If the switch has been turned on (YES), the process returns to step st1, and if not (NO), the process returns to step st9. , The water supply valve 731 is kept open.

Next, advantages of the absorption type air conditioner C of this embodiment will be described. [F] When the cooling operation is stopped by the timer operation or the manual operation as the outside air temperature K is higher, the user feels that it has become hot, and
There is a high possibility that the cooling operation will be restarted in a relatively short time of about a minute, and the lower the outside temperature K, the lower the possibility that the cooling operation will be restarted. Also, the time required to operate the operation switch after deciding to restart the operation varies depending on the position of the control box where the operation switch is installed and the distance to the user, the user's agility, physical condition, etc. .

In the present embodiment, the average value of the past ten times of time t, t,... T stored in the E ² PROM is obtained, and when the outside air temperature K is 25 ° C., the predetermined time t ₀ is averaged. The predetermined time t ₀ is a value obtained by increasing or decreasing the average value by 3 minutes every time the temperature is increased or decreased by 1 ° C. However, the predetermined time t ₀ is 5 minutes <
t ₀ <30 minutes｝. When the data amount is small (for example, 1
If the number is less than 0, the average value is set to a standard value {for example, 15 minutes}.

That is, the predetermined time t ₀ from the present cooling stop to the start of the replacement of the cooling water 340 is determined based on the history of the time from when the cooling is stopped to when the instruction to restart the cooling is issued and the outside air temperature K. Therefore, the chance of encountering the operation restart prohibition state due to the cooling water exchange is significantly reduced, and the usability is excellent.

Next, a fourth embodiment of the present invention (Claim 1,
(Corresponding to Claims 3 and 4) will be described with reference to FIGS. 1, 2, and 6. FIG. The absorption type air conditioner D adopting the configuration of the present invention is different from the first embodiment in the following configuration.

An average value of the measured times t,... T (for five times) when the user gives a re-operation instruction within 30 minutes when the cooling operation is stopped in the past timer operation, and this average value is calculated. the value determined on the basis of the cooling water used time T and (cumulative value), and the predetermined time t ₀ until opening the drain valve 70 during this cooling operation is stopped.

As in the first embodiment, when the user turns off the cooling operation switch (not shown) or when the timer operation time expires, the operation of the absorption type air conditioner D (the microcontroller of the operation controller 9) is started. The operation of the computer will be described with reference to the flowchart shown in FIG.

In step St1, it is determined whether or not start of operation has been instructed by timer operation or manual operation of the operation switch. If start of operation has been instructed (YES), the flow proceeds to step St2. In addition, after step St12, when the operation start is instructed and the process proceeds to step St1, the process also proceeds to step St2.

In step St2, the past five times t, t,... T stored in the E ² PROM are read to determine the maximum value, and based on this maximum value and the accumulated value of the cooling water usage time T, The predetermined time t ₀ is determined, provided that the predetermined time t ₀
Is 5 minutes <t ₀ <30 minutes｝, and proceeds to step St3. For example, every time the cooling water usage time T accumulates 1 hour, to determine what reduced 1 minute from the maximum value of the time t and the predetermined time t ₀ {However, the predetermined time t ₀ is 5 minutes <t ₀ <30 Minutes.

At step St3, the accumulation of the cooling water usage time T is started (restarted), and the routine proceeds to step St4. In step St4, the above-described cooling operation is started.

At step St5, it is determined whether or not the operation stop is instructed by the timer operation or the manual operation of the operation switch. If the operation stop is instructed (YES), the process proceeds to step St6. If the operation stop is not instructed (NO), the process returns to Step St4 to continue the cooling operation.

At step St6, the accumulation of the cooling water usage time T is stopped, and the routine proceeds to step St7. Step St7
Then, the counting of the time t is started, the dilution operation described above is started, and the process proceeds to Step St8.

At step St8, it is determined whether or not the counted time t is less than a predetermined time t ₀ , and the counted time t <the specified time t
_{If it is 0} (YES), the process proceeds to Step St9. If the measured time t ≧ the predetermined time t ₀ (NO), the process proceeds to Step St11 after the end of the dilution operation. If the process has already been completed, the process immediately proceeds to Step St11.

At step St9, it is determined whether or not the operation start has been instructed, and if the operation start has been instructed (YES).
If the dilution operation is being performed, the dilution operation is interrupted, and step S
The process proceeds to t10, and if the dilution operation has been completed, the process directly proceeds to step St10. If not instructed (NO), the process returns to step St8.

In step St10, the counting of the clock time t is stopped, and if the clock time t> 5 minutes, the current clock time t
Is stored in the E ² PROM, and the process returns to step St2. still,
The old data in the E ² PROM is rewritten with new data by overwriting.

At step St11, the above-described operation of replacing the cooling water 340 is performed. Step St11
In, the operation start instruction is given in the case of the time t <30 min, stop counting the measurement time t, and stores the current measured time t in E ² PROM.

At step St12, the end of the replacement is determined based on whether or not the Hi level switch 812 has been turned on. If the switch has been turned on (YES), the process proceeds to step St13, and if not (NO), the process returns to step St11. , The water supply valve 731 is kept open. In step St13,
The cooling water use time T is reset, and the process returns to Step St1.

Next, advantages of the absorption type air conditioner D of this embodiment will be described. [G] Clock time t when the user gives a re-operation instruction within 30 minutes when the cooling operation timer in the past was stopped, t ...
To the maximum of (5 times), each time the cooling water usage time T accumulates 1 hour, to determine what reduced 1 minute from the maximum value of the time t and the predetermined time t ₀ {However, the predetermined time t ₀ Is 5
Min <t ₀ <30 minutes}.

That is, when the timer operation or the cooling operation is stopped manually, the length of the predetermined time t _{0 from} when the drain valve 70 is opened and the operation for replacing the cooling water 340 is started４０the dilution operation is completed. Is determined such that the longer the cumulative use time of the cooling water 340 is, the shorter the accumulated use time of the cooling water 340 is. Opportunities to encounter the operation resumption prohibition state due to the cooling water exchange in a mild state are reduced, so that the usability is excellent and the contamination of the cooling water can be prevented.

Next, a fifth embodiment (corresponding to claim 1) of the present invention will be described with reference to FIGS. 1, 2, and 7. FIG. The absorption-type air-conditioning apparatus E employing the configuration of the present invention, after the cooling operation is stopped by a timer or manually,
If a restart instruction is given within minutes, the cooling water 340
Is different from that of the first embodiment in that the cooling operation is restarted without entering the replacement operation.

As in the first embodiment, when the user turns off the cooling operation switch (not shown), or when the timer operation time expires, the operation of the absorption type air conditioner E (microcontroller of the operation controller 9) is started. The operation of the computer will be described with reference to the flowchart shown in FIG.

In step sT1, it is determined whether or not operation start has been instructed. If operation start has been instructed (YES), the flow proceeds to step sT2. After the completion of the cooling water exchange operation (step sT8), the operation start is instructed and the step sT1 is executed.
Also proceeds to step sT2.

In step sT2, the above-described cooling operation is started. In step sT3, it is determined whether or not the operation stop by the manual operation of the operation switch or the operation stop by the timer operation is instructed, and when the operation stop is instructed (YE
S) is the step sT4 after performing the dilution operation described above.
Proceed to. If the operation stop is not instructed (NO), the process returns to step sT2.

At step sT4, the counting of the counting time t is started, and the process proceeds to step sT5. At step sT5, it is determined whether or not the counted time t is 15 minutes or more. If it is less than 15 minutes (NO), the process proceeds to step sT6. In the case of 15 minutes or more (YES), the process proceeds to step sT7 after the end of the above-described dilution operation. If the process has already been completed, the process directly proceeds to step sT7.

In step sT6, it is determined whether or not the operation start has been instructed, and if the operation start has been instructed (YES)
When the dilution operation is in progress, after the dilution operation is stopped, the above-described cooling operation is started and the process returns to step sT2. If the dilution operation has already been completed, the process returns to step sT2. If not instructed (NO), the process returns to step sT5.

In step sT7, the above-described cooling water 340
Is performed, and the process proceeds to step sT8. In step sT8, the end of the replacement is determined by whether or not the Hi level switch 812 has been turned on. If it has been turned on (YES), the process returns to step sT1. If not (NO), the process returns to step sT7. 731 is kept open.

Next, advantages of the absorption type air conditioner E of this embodiment will be described. [G] The operation controller 9 restarts the cooling operation if the operation restart instruction is issued by 15 minutes after the cooling operation is stopped, after the dilution operation is completed {during the dilution operation}, or immediately. This is the configuration to be performed {when dilution operation is completed}.

For this reason, if the user gives an operation start instruction before the elapse of 15 minutes when the cooling operation is stopped, the cooling operation is restarted without entering the replacement operation of the cooling water 340 and the comfort is improved. Can be maintained, and the absorption refrigeration cycle apparatus is excellent in usability.

The present invention includes the following embodiments in addition to the above embodiments. a. In the above-described embodiment, an example in which the present invention is applied to a double effect type absorption type air conditioner is shown. However, the present invention may be applied to a single effect type or triple or more multiple effect type absorption type air conditioner.

B. As the absorbing liquid, an aqueous ammonia solution (in this case, the refrigerant is ammonia) or the like may be used in addition to the aqueous lithium bromide solution.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of an absorption type air conditioner according to first to fifth embodiments of the present invention.

FIG. 2 is an enlarged view of a main part of the absorption type air conditioner.

FIG. 3 is a flowchart showing the operation of the absorption type air conditioner according to the first embodiment.

FIG. 4 is a flowchart showing the operation of the absorption type air conditioner according to the second embodiment.

FIG. 5 is a flowchart showing the operation of the absorption type air conditioner according to the third embodiment.

FIG. 6 is a flowchart showing the operation of the absorption type air conditioner according to the fourth embodiment.

FIG. 7 is a flowchart showing an operation of the absorption type air conditioner according to the fifth embodiment.

[Explanation of symbols]

A to E Absorption cooling and heating device (absorption refrigeration cycle device) 1 High temperature regenerator (regenerator) 2 Low temperature regenerator (regenerator) 3 Condenser 4 Evaporator 5 Absorber 6 Absorbent pump 8 Cooling tower 9 Operation controller 11 gas burner (heat source) 12 heating chamber 31 condenser heat exchanger 34 absorbs heat exchanger 70 drain valve 81 cooling water reservoir 82 a cooling water pump 340 coolant t ₀ predetermined time t measured time (elapsed time)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F25B 15/00 F25B 15/00 306

Claims (5)

(57) [Claims] 1. A regenerator having a heating chamber in which an absorbing liquid is contained and heated by a heating source, wherein a regenerator for vaporizing a part of the absorbing liquid to separate it into a concentrated absorbing liquid and a refrigerant, and a cooling water passing therethrough. A condenser heat exchanger is arranged, a condenser for cooling and liquefying the vaporized refrigerant generated in the regenerator, an evaporator for evaporating the liquefied refrigerant liquefied in the condenser under reduced pressure, and a cooling water passing therethrough. An absorption heat exchanger, an absorber for absorbing the vaporized refrigerant evaporated by the evaporator into the concentrated absorption liquid separated by the regenerator, and transferring the absorption liquid from the absorber to the heating chamber. An absorption liquid pump; a cooling tower that cools the cooling water by flowing cooling water that has passed through the absorption heat exchanger and the condensation heat exchanger from above to below; Cooling sump for storing water, and drainage of cooling water in the cooling sump A drain valve for transferring the cooling water from the cooling water reservoir to the absorption heat exchanger; and an operation for controlling the heating source, the absorption liquid pump, the drain valve, and the cooling water pump. An absorption refrigeration cycle apparatus comprising: a controller; wherein the operation controller delays the cooling operation by a predetermined time and opens the drain valve. 2. A regenerator having a heating chamber in which the absorbing liquid is contained and heated by a heating source, wherein a regenerator for vaporizing a part of the absorbing liquid to separate it into a concentrated absorbing liquid and a refrigerant, and a cooling water passing therethrough. A condenser heat exchanger is arranged, a condenser for cooling and liquefying the vaporized refrigerant generated in the regenerator, an evaporator for evaporating the liquefied refrigerant liquefied in the condenser under reduced pressure, and a cooling water passing therethrough. An absorption heat exchanger, an absorber for absorbing the vaporized refrigerant evaporated by the evaporator into the concentrated absorption liquid separated by the regenerator, and transferring the absorption liquid from the absorber to the heating chamber. An absorption liquid pump; a cooling tower that cools the cooling water by flowing cooling water that has passed through the absorption heat exchanger and the condensation heat exchanger from above to below; Cooling sump for storing water, and drainage of cooling water in the cooling sump A drain valve for transferring the cooling water from the cooling water reservoir to the absorption heat exchanger; and an operation for controlling the heating source, the absorption liquid pump, the drain valve, and the cooling water pump. An absorption refrigeration cycle apparatus comprising a controller, wherein the operation controller opens the drain valve with a delay of a predetermined time from the stop of the cooling operation only when the cooling operation based on the timer operation ends. 3. The absorption method according to claim 1, wherein the predetermined time is determined in consideration of an elapsed time when a user gives a restart instruction in a relatively short time when the cooling operation is stopped in the past. Refrigeration cycle device. 4. The absorption refrigeration cycle apparatus according to claim 1, wherein the predetermined time is determined in consideration of a use time of the cooling water. 5. The absorption refrigeration cycle apparatus according to claim 1, wherein the predetermined time is determined in consideration of an outside air temperature.