JPH0641823B2 - Absorption chiller pump overhaul and inspection time notification device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device that informs an operation manager of the timing of overhauling an absorption refrigerator pump such as an absorption liquid pump or a refrigerant liquid pump.

(B) Conventional Technology It is generally known that a pump such as a pump for absorbing liquid or a pump for refrigerant liquid is used in an absorption refrigerator. It is also known that the performance of these pumps gradually deteriorates with increasing wear and scale adhesion depending on the frequency of use (frequency of start and stop) and operating time.

And, in order to grasp the degree of deterioration of each of these pumps, conventionally, maintenance inspections have been performed by regularly disassembling and inspecting these pumps (for example, disassembling and inspecting once a year) (issued by the Japan Refrigeration and Air Conditioning Industry Association. (First revision in February 1982
Edition) "Correct operation method of gas absorption chiller / heater / absorption chiller", pp. 53-58].

(C) Problems to be solved by the invention In the above-described conventional overhaul of the pump, a uniform regular inspection is performed regardless of whether the absorption refrigerator is used frequently or not. Has a problem that the overhaul period is too long and the pump is liable to fail during this period, while the latter case requires too much labor.

For this reason, there is a method of individually selecting the disassembly inspection period by manually recording the usage time and the usage frequency of the absorption refrigerator, but this method has a problem that it takes too much time for the operation manager. In addition, the absorption chiller is equipped with a protection device to prevent cavitation of the pump, freezing of cold water and refrigerant, crystallization of absorbing liquid, overheating of the generator, etc., and a capacity control device to obtain cold / hot water commensurate with the load. , These devices work during the operation of the absorption chiller to automatically control the start / stop and operation of the pump. For this reason, it is practically impossible to accurately record the number of times of starting and stopping and the operating time of each pump such as the absorption liquid pump and the refrigerant liquid pump during the operation of the absorption refrigerator. is doing.

In view of such problems, the present invention integrates the operating time of each pump instead of manually, and when the integrated operating time reaches an operating time (set operating time) that requires disassembly and inspection of the pump, The purpose of the present invention is to provide a device capable of transmitting a message to the operation manager to the effect that the pump that has reached the set operation time should be disassembled and inspected.

(D) Means for solving the problems The present invention, as a means for solving the above problems, an operation command unit for instructing the start and stop of each of the absorption refrigerator pumps, and a signal of this operation command unit. While receiving and integrating the operating time of each pump, this is stored in a storage element such as a RAM (random access memory) or a magnetic tape, and the set operating time previously stored in the storage element and the integrated operating time described above. The built-in comparison unit of the computer that compares the size of the above and the comparison operation time, and when this comparison unit determines that the integrated operation time has exceeded the set operation time, it receives a signal from the comparison section By connecting, via an interface, an informing unit for notifying the necessity of disassembling and inspecting the pump, which has reached the cumulative operating time, and a control unit for controlling the operation of the pump. , Which is constituted overhaul time notification device of the pump for the absorption refrigerator.

(E) Action The device of the present invention exerts a function of instructing the start / stop of the pump controlled by the control unit by the operation command unit instead of the hand, in other words, a function (action) of recognizing the start / stop, and , Based on this function, the computer of the comparison unit integrates the operating time of each pump and exerts the function of determining whether or not this integrated operating time has reached the set operating time that requires disassembly and inspection of the pump, and In addition, the function of notifying the operation manager of the message indicating that the pump needs to be disassembled and inspected when the accumulated operation time has reached the set operation time or more is provided. With such a function, the operation manager or the service person can disassemble and inspect the pump at an appropriate time without waste.

(F) Embodiment FIG. 1 is a schematic configuration diagram showing an embodiment of an overhaul and inspection time notification device for an absorption refrigerator pump according to the present invention.
In FIG. 1, (A) is an absorption refrigerator, which is a high temperature generator (1), a low temperature generator (2), a condenser (3), an evaporator (4), an absorber (5 ), The low temperature solution heat exchanger (6), the high temperature solution heat exchanger (7), the refrigerant liquid pump (P _R ) and the absorption liquid pump (P _A ) through which the refrigerant flows (8), ( 9), the pipeline (10) through which the refrigerant liquid flows down, the pipelines (11) and (12) through which the refrigerant liquid flows back, and the pipelines (13), (14), (15), (16) through which the absorption liquid is sent. ) And the pipes (17), (18), (19), (20) through which the absorbing liquid flows,
A circulation path for the refrigerant [water] and the absorption liquid [lithium bromide aqueous solution] similar to that of the conventional absorption refrigerator is configured. (21) is a combustion heating chamber of the high temperature generator (1), (22), (22) ... are heating tubes through which combustion gas flows, (23) is a flue for flue gas, and (24) is a low temperature generator ( The heater of (2), (25) and (26) are coolers of the condenser (3) and absorber (5), respectively, and (27) is a heat exchanger incorporated in the evaporator (4). (28) is the combustion heating chamber (21) of the high temperature generator (1)
To the fuel supply passage for guiding the fuel, this fuel supply passage are provided with flow control valve (V _F) is. (29), (30) and (31) are coolers (2
A pipe for cooling water that connects 6) and 25) in series.
3) is a pipe for cold water or hot water that connects the heat exchanger (27) and the load side heat exchange unit (not shown). When multiple load side heat exchange units are installed,
2) and (33) are mother tubes. Further, (34) is a pipe line connecting the body of the evaporator (4) and the absorber (5) and the pipe line (8), and this pipe line is provided with a cold / hot switching valve (V ₁ ). . And again, (35)
Is a pipe connecting the discharge side pipe (14) of the pump (P _A ) and the liquid reservoir of the evaporator (4), and (36) is connecting the pipe (17) and the absorber (5) lower part. The pipes (35) and (36) are also provided with cold / hot switching valves (V ₂ ) and (V ₃ ), respectively. When the cold water supply to the load side heat exchange unit is switched to the hot water supply, these cold temperature change valves (V ₁ ), (V ₂ ), (V
By switching ₃ ) from closed to open, the refrigerant vapor from the high temperature generator (1) flows to the evaporator (4) and the latent heat of condensation of the refrigerant vapor in the heat exchanger (27) causes the heat exchanger (27). Raise the temperature of the water inside,
Further, the absorbing liquid is diluted with the refrigerant liquid to lower the boiling temperature thereof to enhance the thermal efficiency of the high temperature generator (1). In addition,
(P _G ) is a non-condensable gas extraction pump, and (37) is a refrigerant blow pipe line with a valve (V _B ). Again, (B)
Is a burner, (P _W ) is a cold / hot water pump, and (P _C ) is a cooling water pump.

(S _GT ) is a solution temperature detection sensor provided on the outer wall of the high temperature generator (1), (S _GP ) is a vapor pressure detection sensor provided in the gas phase part of the high temperature generator (1), (S _GL ) Is a sensor for detecting the liquid level provided on the upper side of the high temperature generator (1), (S _WT ) is a conduit (3
3) Cold water (warm water) temperature detection sensor installed on the wall,
(S _WF ) is a sensor for detecting the flow rate of cold water [warm water] provided in the pipe line (33), and (S _RT ) is a sensor for detecting the temperature of the refrigerant liquid provided on the bottom side wall of the evaporator (4). Also, ( _SAP ) is an absorber
It is a sensor for pressure detection provided in (5).

(DOC) is a control unit as an operation control panel of the absorption refrigerator (A), and this control unit has a central processing unit (CPU), an input interface (I / F _S ), (I
/ F _KB ), output interface (I / F _{L · PR} ), (I
Computer parts such as _{/ FOC} ) are built in.

(LCD) is a notification device, (PR) is a printer, (KB)
Is a keyboard.

Then, the sensors (S _GT ), (S _GF ), (S _GL ),
_{(S WT), (S WF} ), and _{(S RT), (S AP} ) and the absorption chiller control unit (A) (D · O · C), alarm (LCD)
The printer (PR) and the keyboard (KB) are electrically connected (or connected together using an optical communication cable) to form an absorption refrigerating pump disassembly and inspection timing notification device.

Although not shown in FIG. 1, the control unit (D / O /
C) is designed to receive signals from sensors other than the above sensors, and these signals can be accessed by the sensor, the central processing unit (CPU), the printer (PR), and other computer parts. The change in the physical quantity sensed by the printer is printed out as operating data on a printer (PR).

Furthermore, the control unit (D / O / C) of the absorption refrigerator (A) is
As with the prior art, the opening degree adjustment of the fuel control valve (V _F),
Pump _{(P R), (P A} ), (P W), (P C), (P G)
The discharge amount is adjusted and started / stopped, the burner (B) is started / stopped, and the cold / hot switching valves (V ₁ ), (V ₂ ), and (V ₃ ) are opened / closed.

FIG. 2 is a block diagram of the device for disassembling and inspecting the absorption refrigerating pump shown in FIG. In FIG. 2, an input interface (I / F _S ) for receiving an analog signal from a sensor and an input for receiving a digital signal from a keyboard (KB) are input to the control unit (D / O / C) of the absorption refrigerator (A). Interface (I / F _KB ), Output interface (I / F _{L · PR} ), which issues digital signals to the alarm (LCD) and printer (PR), Output interface (I) which issues digital or analog control signals to valves and pumps / F _{O ·} C), read-only
It has a built-in memory (ROM), random access memory (RAM), and clock (CLOCK). A keyboard (KB), a printer (PR), and a notification device (LCD) may be built in the control unit (D / O / C).

Then, while operating the keyboard (KB), the input interface (I / F _KR ) and the central processing unit (CP)
U), by accessing the signal between read-only memory (ROM), a pump (P _R),
(P _A ), (P _W ), (P _C ), the extraction pump (P _G ) and the burner (B), etc. And the input interface (I
/ F _S ), if any of the signals coming into the central processing unit (CPU) meets the above-mentioned start / stop condition,
This signal is sent to the central processing unit (CPU)
Only memory (ROM), random access
By accessing between memory (RAM), the access signal at the time when the signal start / stop condition is met is stored in the random access memory (RAM) as operation command information [set], and this signal is output. interface (I / F O _{· C)} the ability to command it to start-stop and transmitted to the driving equipment that meet the start-stop conditions via the control unit (D
・ O ・ C) is equipped. In other words, the control unit (D / O / C) has a function of recognizing which of the driving devices starts and stops.

Moreover, the control unit (D / O / C) stores the time matching the start / stop condition in the random access memory (RAM) as described above, and at the same time, the central processing unit (CPU) and the clock (CLOCK). ), The time between the start and stop of operation of the drive equipment that matches the start / stop conditions is counted, and the operation time is calculated for each start / stop of this drive equipment. The number of stoppages is integrated [added] and stored in a random access memory (RAM) as data. Then, the control unit (DOC) inputs the signal from the stop switch (not shown) for the absorption refrigerator (A) provided therein or the operation signal of the keyboard (KB) to the input interface (I / F _KB). ), When this signal is received via the central processing unit (CPU), read only memory (ROM), random access memory (RAM), to the random access memory (RAM) The stored data is made into a table or a graph and a signal for printing out by the printer (PR) is issued to the printer (PR) via the output interface (I / F _{L · PR} ).

In addition, random access memory (RAM),
By the operation of the keyboard (KB), pump (P _{R),
(P A), (P W} ), (P C), (P G) disassembly and inspection is set operation time required for the setting operation time required oil change bleed pump (P _G), a burner (B) Other The set operating time and the like that require maintenance and inspection of the equipment are stored in advance. Then, the control unit (D-O-C) is a random access memory pumps having stored as data in the _{(RAM) (P R),} (P A), (P W), (P C), (P
_G ) and burner (B) drive equipment such as cumulative operating time and the random access memory (RAM) pre-stored operation time, the central processing unit (CPU), read Only Memory (R
OM) and a random access memory (RAM) to access the signal, and when comparing, when any one of the integrated operation time becomes larger than the set operation time, the size is displayed on the alarm (LCD). A signal for indicating that the drive equipment that has reached a certain level needs to be disassembled or checked for oil replacement or maintenance is output to the annunciator (LCD) via the output interface (I / _{FL / PR} ). ing.

Next, refer to the flow charts of the programs shown in FIG. 3, FIG. 4 and FIG. 6 for the operation example of the disassembling / inspecting time notification device (hereinafter referred to as this device) for the absorption chiller pump configured as described above. I will explain. Note that these programs are read-only, control-only (D, O, C).
It is stored in the memory (ROM).

In the following description, an input interface (I / F _S ) that receives an analog signal from a sensor, an input interface (I / F KB) that receives a digital signal from a keyboard ( _KB ), an alarm (LCD) and a printer ( Output interface (I / F _{L / PR} ) for transmitting digital signals to _PR ), output interface (I / F _{O / C} ) for transmitting digital or analog control signals to valves, pumps, burners, etc., central processing unit (CPU) ,
Read-only memory (ROM), random access memory (RAM), clock (CLOCK) and alarm (LCD) are (I / F _S ), (I / F)
_KB ), (I / F _{L / PR} ), (I / F _{O / C} ), (CPU),
(ROM), (RAM), (CLOCK) and (LC
It describes as D).

In addition, the absorption refrigerating machine (A) control unit (DO
・ In (RAM) in C), set values of various physical quantities that are the start / stop conditions of each drive device [eg burner (B)]
Path is the deactivation conditions tube (33) in the lower limit of the cold water temperature, the burner pipe is re-operation start condition (B) (33) in chilled water temperature setpoint, the absorbing solution pump (P _A) operating the high-temperature generator is a stop condition (1) in the upper liquid level, the burner hot generator is deactivated condition (B) (1) the lower liquid level, the absorbing liquid pump (P _a) and the burner (B) each re-activation start condition hot generator is (1) within the set liquid level is operation start condition of the bleed pump (P _G) absorber (5) in the upper limit pressure, re-suspension of the extraction pump (P _G) of The timer setting time, which is a condition, is stored. In addition, in the above (D ・ O ・ C),
Set operating time [for example, 1 that requires overhaul of the absorption liquid pump (P _A ), refrigerant liquid pump (P _R ), and other pumps.
0,000 hours], setting operation time required oil change bleed pump (P _G) [for example, 20 hours], the burner (B)
The set operation time [for example, 5,000 hours] that requires maintenance and inspection is stored.

FIG. 3 is a flow chart showing an example of the operation command operation by the present device for the absorption liquid pump, which is one of the drive devices for the absorption refrigerator.

First, the control unit (D / O / C) of the device is an absorption refrigerator.
The operation of the step of determining whether (A) is in operation is performed. This determination is made, for example, by whether or not the ON signal of the operation switch or the absorption liquid dilution operation switch is input to the control unit (D / O / C). If the ON signal is input, the determination of the stage becomes YES, and the operation proceeds to the stage. In the step operation, it is determined whether or not the liquid level in the high temperature generator (1) detected by the sensor (S _GL ) is equal to or higher than the upper limit set value. If this determination is NO, the operation proceeds to the stage. In the step operation, it is determined whether or not the liquid level in the high temperature generator (1) detected by the sensor (S _GL ) is less than the set value. When this determination is YES, the CPU proceeds to the operation of the step command information of the absorbent pump (P _A) ON is set to the (RAM), further, the command signal of the absorbent pump (RAM) ON this pump After moving to the stage operation transmitted to, the process returns to the stage operation again. Thus, the operation of the absorption liquid pump (P _A) is continued while repeating the operation of ~ stage.

On the other hand, if the absorption refrigerator (A) is stopped and the stage judgment is N
If O, pump for absorption liquid (P _A ) to (RAM)
Operation of the step of resetting [de] command information of ON is performed, the operation of steps is performed to transmit a command signal of the pump (P _A) OFF absorbing solution in the pump. That is, the operation of the absorption liquid pump (P _A) is stopped.

Also, when the absorption refrigerating machine (A) is in operation, when the judgment operation of the stage is YES, that is, the high temperature generator.
When (1) the liquid level is equal to or greater than the upper limit set value, (RAM) absorption liquid pump to (P _A) resets the command information of ON [a loss of memory of the pump ON absorbing solution] stage The operation is performed, and further, the OFF command signal is transmitted from the control unit (D / O / C) to the absorbing liquid pump (P _A ) via the output interface (I / F _{O / C} ), and the operation of this pump is performed. Is stopped. Since absorption liquid pump (P _A) is supplied diluted absorption liquid is interrupted to when to stop the hot generator (1), gradually the liquid level in the generator begins to fall. Then, when the liquid level in the high temperature generator (1) falls below the upper limit set value, the judgment operation of the step becomes NO judgment, and the operation moves to the step judgment operation. At the time of shifting to this operation, the high temperature generator
(1) when the liquid level is above the set value less than the upper limit set value, the step of determination continues stopped state of NO and ,, phase of operation is performed by the absorbing liquid pump (P _A). Then, when the liquid level in the high temperature generator (1) further drops and becomes less than the set value, the judgment of the stage becomes YES, and the command information for turning on the pump for absorbing liquid is set in (RAM) [store]. absorbing liquid pump (P _a) is re-operated again moved to the stage of operation. Thus, the apparatus is set to (RAM) the command signal as information as to the start-stop instruction of the absorbent pump (P _A) while receiving signals of the liquid level detection sensor (S _GL) [ [Remember].

Incidentally, the chronograph coupling command, the liquid level detection sensor (S _GL) other than the sensor signal of the absorbent pump (P _A), for example, a pressure detecting sensor (S _GP), temperature detecting sensor (S _GT), (S _WT ) and other signals are received, and the burner (B) start / stop command is also issued while receiving these signals. Note The sensor for detecting temperature of the refrigerant fluid (S _RT), chilled water flow rate detecting sensor (S _WF), absorber (5) in the pressure detecting sensor (S _AP)
While it is receiving such a signal, as well as the coolant pump (P _R)
Of course, it is also possible for this device to issue a start / stop command for the cold water pump (P _W ) and the extraction pump (P _G ).

FIG. 4 is a flow chart showing an example of the operation of integrating the number of times of operation of the absorbent pump (the number of times of starting and stopping) and the operation time by this device.

In this integration operation, for example, the absorbing solution pump through a keyboard when installing the absorption refrigerating machine (A) (KB) (P A)
First, the operations <1> and <2> in which the number of times N of operation and the operating time T are set to zero and stored in the (RAM) are performed. This memory is (RA
It is set in a portion of the area M) that is backed up by a battery (hereinafter referred to as a backup area). Then, another to the part absorbing liquid pump (P _A) command information of ON is determined whether the stored [see the operation stage of FIG. 3] <3> phase of operation of the area (RAM) Is performed. If the determination at the <3> stage is NO, the operation at this stage is repeated. Conversely, if YES,
Move to the <4> stage operation. In the operation of <4> stage,
The (CPU) adds 1 to the operation number N [N = 0] and stores this [N = N + 1] as new information in the backup area of the (RAM). That is, the information that the operation number 1 of the absorbent pump in (RAM) (P _A) is recorded as data. Then, the (CPU) performs the operation of <5> stage for counting the time for one second, and thereafter performs the operation of <6> stage. In the operation of <6> stage,
(CPU) is operating time T [T of the absorbent pump (P _A)
= 0] is incremented by 1 and this [T = T + 1 = 0 + 1] is stored as new information in the backup area of the (RAM). That is, the information that the operation time for one second of the absorbent pump in (RAM) (P _A) is recorded as data. <6> after the phase of operation, again, command information of the absorbing liquid pump (P _A) ON operation determines whether it is stored in the (RAM) [<7> phase of operation] is performed. If the determination in the <7> stage is YES, the operation moves to the <5> stage again, the operations in the <5> to <7> stages are repeated, and the memory in the back area of (RAM) is T = 1,
It can be rewritten sequentially into 2, 3, .... Sunachi, if the driver of the absorbent pump (P _A) is continued, it being recorded as data on the operation time (RAM). On the other hand, <7> command of the pump (P _A) OFF outgoing <Figure 3 with erased from memory when the determination of step is NO [command information of the absorption liquid pump (P _A) ON is (RAM) When the operation of the absorption liquid pump (P _A ) is stopped by referring to the operation of the stage>, the process returns to the determination operation of the <3> stage.

Then, when the command information for turning on the absorption liquid pump (P _A ) is stored in the (RAM) again, in other words, the pump (P A) is stored.
_{When the A} ) ON command is transmitted and the pump (P _A ) is restarted, the determination at the <3> stage becomes YES, and the operation proceeds to the <4> stage again. In the operation of <4> stage at this time,
Since the information of N = 1 has already been stored in the backup area of the (RAM), the (CPU) has this N [N =
1] is added to 1 to store this [N = N + 1 = 1 + 1 = 2] as new information in the backup area of the (RAM). That is, the information that the number of operations a second pump for the absorbing solution in (RAM) (P _A) is recorded as data. After that, the operations of <5>, <6>, and <7> stages are performed in the same manner as the previous time, and the absorption liquid pump (P
The operation time of the second operation in _A ) is added to that of the first operation and stored as new information in the backup area of (RAM), and the total operation time is recorded as data in (RAM). The <3> to <7> phase of operation is repeated for each start-stop of the absorbent pump (P _A), N in the operation of the <4> stage 1, 2,
And sequentially rewritten into ...... is recorded as data for driving the number of the absorbing liquid pump to the backup area (RAM) (P _A).

In this way, the absorbing liquid pump absorption liquid pump (P _A) of the total operating time is accumulated the device with starting and stopping the operating frequency for each of (P _A) is recorded in the device Will be recorded in. The present apparatus also records the number of times of operation of the refrigerant liquid pump (P _R ) and other pumps and the operating time in the same manner.

Then, the number of times the pump has been operated and the operating time recorded in this device are appropriately converted into data by a signal from the operation stop switch [not shown] of the absorption refrigerator (A) or an interrupt signal from the keyboard (KB). Printer (PR)
Printed out from. FIG. 5 is a chart showing an example of printed data. In the example of the data shown in FIG. 5, the absorption refrigerator (A) was installed on September 20, 1985.
Is 8 operated 17 am to 9 hours at day during which the absorbing solution pump (P _A), refrigerant liquid pump (P _R), the burner
(B), each number operation of extraction pump (P _G) [start-stop number], operation time 15 times, 8 hours and 21 minutes, 8 times, 7 hours 26 minutes, 10 times, 5 minutes 8 hours, once It is displayed that it was 1 hour and 12 minutes.

A calendar timer circuit (not shown) is built in the control section (D.O.C) of the present apparatus, and the date and time are also recorded as data in the backup area of (RAM). .

FIG. 6 is a flow chart showing an example of the notification operation by the present device of the overhaul and inspection timing of the absorbent pump.

In this notification operation, similarly to the flowchart shown in FIG. 4, is set to zero the accumulated operating time t of the absorbent pump (P _A) by the keyboard (KB) (RAM)
To another backup area The operation of is first performed. Then, similarly to the repetitive operation of steps <5> to <7> in the flowchart shown in FIG. The accumulated operation time t of the absorbent pump (P _A ) is incremented by 1 second while repeating the above operation, and is sequentially stored in the (RAM) as new information. When the total integrated operation time t reaches the set operation time (10,000 hours) stored in advance in (RAM), The judgment operation of becomes a judgment of YES, Move to the operation of.

In the operation of, the control unit (D / O / C) issues a signal to the annunciator (LCD) via the output interface (I / F _{L / PR} ), and the annunciator of the absorbent pump (P _A ) is issued by this annunciator. A message to the effect that disassembly and inspection is required is sent to the operation manager. Figure 7 is a chart showing a display example of this message.
In this display example, for example, a red liquid crystal display device is used as a notification device (LCD), and a message is transmitted by blinking the display device. Note that a blinking lamp may be used as the notification device and the message may be printed out by the printer (PR). Convey the message in this way After the operation of the is performed, and stores again the keyboard to reset the integrated operating time t of the absorbent pump (P _A) to zero by the operation of (KB) (RAM) Is performed, Is returned to the action of. Note that when the message is transmitted, it is of course the overhaul of the absorbent pump (P _A) is carried out by the driver administrator or serviceman.

The apparatus also refrigerant liquid pump (P _R) overhaul timing of other pumps, oil change time of the extraction pump (P _G), even such maintenance time of the burner (B), similarly, alarm ( The operation manager is notified via the LCD).

In addition, this apparatus also records the transition of the physical quantity detected by various sensors as data, and prints it out by a printer (PR).

As described above, this device controls the start / stop of each of the absorption liquid pump (P _A ) and other absorption refrigeration pumps.
O / C), and the command information is stored in (RAM) in the control unit (D / O / C) to recognize the start / stop of each pump for the absorption refrigerating machine, and each of these pumps. The number of times and the operating time for each
U) Counting and adding up and storing in the backup area of (RAM) and storing in the backup area of the pump in advance and the set operation time of the pump and the integrated operation time by the control unit (D / O / C). Compare by accessing the signal of
In addition, as a result of this comparison, when it is determined that the integrated operating time has reached the size equal to or greater than the set operating time, the control unit (DO
・ It has a function to notify the operation manager of the message that the pump that has exceeded the set operation time needs to be disassembled and inspected by the alarm (LCD) that receives the signal transmitted from C). It is convenient to inform the operation manager of the proper disassembly and inspection time of the absorption chiller pump.

(G) Effect of the Invention As described above, the device of the present invention automatically integrates the number of times of operation and the operating time of each pump that is often controlled during operation of the absorption refrigerator, instead of manually. It provides the convenience of recording and the convenience of notifying the operation manager of the proper disassembly and inspection time of the pump, which helps prevent pump failure, and has the effect of economical and simple maintenance of the absorption refrigerator over a long period of time. To do.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory view showing an embodiment of a disassembly and inspection time notification device for an absorption chiller pump according to the present invention, and FIG. 2 is a disassembly and inspection time notification for an absorption chiller pump shown in FIG. FIG. 3 is a block diagram of the apparatus, and FIG. 3 is a flow chart showing an example of the operation command operation by the apparatus of the present invention (disassembly and inspection time notification device of the pump for the absorption refrigeration machine) for the absorption liquid pump which is one of the drive devices for the absorption refrigeration machine, FIG. 4 is a flow chart showing an example of an operation of integrating the number of times of operation (the number of times of starting and stopping) and the operating time of the absorbent pump by the device of the present invention, and FIG. FIG. 6 is a chart showing an example of data on the operating time of the pump and the number of times of operation (the number of times of starting and stopping), and FIG. 6 is a flow chart showing an example of an operation of notifying the disassembling inspection time of the absorbent pump by the device of the present invention. Over DOO, FIG. 7 is a table showing a display example of Metsuseji of effect of overhaul principal of the absorbent pump according to the present invention apparatus. (A) …… Absorption refrigerator, (1) …… High temperature generator, (2) …… Low temperature generator, (3) …… Condenser, (4) …… Evaporator, (5) …… Absorber , (P _R ) ... Refrigerant liquid pump, (P _A ) ... Absorption liquid pump, (P _G ) ... Extraction pump, (P _W ) ... Cold / hot water pump, (P _C ) ... Cooling Water pump, (B) …… Burner, (S _GT ), (S _GP ), (S _GL ), (S _WT ),
(S _WF ), (S _RT ), (S _AP ) ... sensor, (D ・ O)
・ C) …… Control unit, (CPU) …… Central processing unit, (ROM) …… Read only memory, (R
AM) ... Random access memory, (CLOC
K) …… Clock, (I / F _S ), (I / F _KB ), (I / F
_{L / PR} ), (I / F _{O / C} ) ... Interface, (K
B) ... Keyboard, (LCD) ... Informer, (PR)
……printer.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Sakata 180 Sakata, Oizumi-cho, Oura-gun, Gunma Higashi Kyosan Electric Co., Ltd. (72) Takaki Iwatani 180 Sakata, Oizumi-cho, Oura-gun, Gunma Prefecture Tokyo Sanyo Electric Co., Ltd. (72) Inventor Gou Ishikawa 180 Sakata, Oizumi-cho, Gunma-gun Osamu, Higashi Kyoyo Sanyo Electric Co., Ltd. (72) Inventor Kazuo Matsumoto 2-18 Keihanmoto-dori, Moriguchi-shi, Osaka Sanyo Electric (72) Inventor Masahiro Maekawa 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Masayasu Esaki 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. Operation instruction means for instructing the start / stop of each of the absorption chiller pumps such as the absorption liquid pump and the refrigerant liquid pump, and the operation time of each of the pumps upon receiving a signal from the operation instruction means. This integrated operating time is stored in a storage element while integrating the values and the comparison between the set operating time of each pump stored in advance in the storage element and the integrated operating time of each pump is made. Means for receiving the signal from the comparing means at the time point when the integrated operating time is judged to be greater than the set operating time by the comparing means, and the fact that the pump needs to be disassembled and inspected And an absorption chiller control means for controlling the operation of each of the pumps are connected through an interface. Overhaul time notification device of the absorption refrigeration machine pump.