JP2008199949A - Apparatus for feeding detergent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for feeeding detergent, easily and accurately changing the liquid quantity of the detergent to be supplied to a vessel, such as detergent cylinder. <P>SOLUTION: The detergent feeding apparatus 1, for metering and supplying a liquid detergent stored in detergent tanks 2a-2c for cleaning a milking machine is provided with pumps 4a-4c placed on liquid feeding pipes 12a-12c connected to the detergent tanks 2a-2c and feeding the detergent by prescribed quantity from the detergent tanks 2a-2c; and a controller 8 for stopping the pumps 4a-4c, when the fed quantity reaches a prescribed liquid quantity Qr by calculating the feeding quantities of the detergent by the pumps 4a-4c, based on the operating times of the pumps 4a-4c and comparing the quantities with a prescribed liquid quantity Qr. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a detergent supply device that supplies a liquid detergent for washing a milking machine stored in a detergent tank to containers such as a washing tank and a bulk cooler.

  As this type of detergent supply apparatus, the applicant has already proposed the detergent supply apparatus disclosed in Japanese Patent Laid-Open No. 6-183495. This detergent supply device has a liquid feed path in which a liquid feed pump for feeding detergent from the detergent tank into the detergent cylinder, a timer for driving the liquid feed pump, and a constant liquid amount (specified in the detergent cylinder). A detergent amount adjusting means for returning the detergent that has reached the (liquid amount) or more into the detergent tank, and a supply path in which an electromagnetic valve for supplying the detergent in the detergent cylinder to the washing tank is provided. In this detergent supply device, the liquid feed pump is driven for a certain period of time using a timer so that the amount of detergent supplied into the detergent cylinder is larger than the prescribed amount. After the pump is stopped, the detergent supplied in excess of the specified liquid amount is returned from the detergent cylinder into the detergent tank by the detergent amount adjusting means, so that the detergent cylinder is supplied with the specified amount of detergent. It becomes. By operating the electromagnetic valve in this state, a desired amount of detergent is supplied from a detergent cylinder to a container such as a washing tank.

Further, the detergent amount adjusting means allows the lower end of the detergent cylinder to slidably enter a circulation path made of a flexible material that returns the detergent in the detergent cylinder to the detergent tank, and projects the upper end of the detergent cylinder above the detergent cylinder. The detergent level adjustment pipe slidable up and down in the pipe, the outflow hole through which the detergent in the detergent cylinder provided in the middle of the pipe peripheral wall flows into the detergent level adjustment pipe, and the inner peripheral wall of the circulation path enter the circulation path. The detergent level adjusting pipe is formed by fixing means that presses against the peripheral wall of the lower end of the detergent level adjusting pipe and removably fixes the detergent level adjusting pipe in the detergent cylinder. Therefore, by holding the top of the detergent level adjustment pipe protruding above the detergent cylinder with your hand, slide the detergent level adjustment pipe up and down in the detergent cylinder, and the height of the outflow hole in the middle wall of the detergent level adjustment pipe By changing the position, the liquid level of the detergent to be stored in the detergent cylinder can be changed.
JP-A-6-183495 (page 2-6, FIG. 1)

  However, this conventional detergent supply apparatus has the following problems to be solved. That is, in this detergent supply device, when changing the amount of liquid (specified liquid amount) of the detergent to be stored in each detergent cylinder, the height position of the outflow hole is changed by sliding the detergent level adjustment pipe up and down. Since there is a need to change the mechanical structure, there is a problem to be solved that requires labor and skill in adjusting the specified liquid amount.

  This invention is made | formed in view of this subject, and it aims at providing the detergent supply apparatus which can change the liquid quantity of the detergent which should be supplied to containers, such as a detergent cylinder, correctly and easily.

  To achieve the above object, the detergent supply apparatus according to claim 1 is a detergent supply apparatus that measures and supplies a liquid detergent for washing a milking machine stored in a detergent tank, and is connected to the detergent tank. A pump disposed in the liquid supply pipe for supplying the detergent from the detergent tank by a predetermined amount; and an amount of the detergent supplied by the pump is calculated based on at least one of an operating time of the pump and a total rotational speed A controller that compares the supply amount with a predetermined liquid amount that is set in advance and stops the pump when the supply amount reaches the predetermined liquid amount;

  The detergent supply device according to claim 2 is the detergent supply device according to claim 1, wherein a temperature sensor that measures a liquid temperature of the detergent, and a memory that stores characteristic data indicating a relationship between the liquid temperature and the predetermined amount. And the control unit specifies the predetermined amount at the measured liquid temperature based on the liquid temperature measured by the temperature sensor and the characteristic data, and the specified predetermined amount, The supply amount is calculated based on at least one of the pump operating time and the total rotational speed.

  The detergent supply apparatus according to claim 3 is a detergent supply apparatus that measures and supplies a liquid detergent for washing a milking machine stored in a detergent tank, and is provided in a liquid feed pipe connected to the detergent tank. A pump that supplies the detergent from the detergent tank, and a flow meter that is disposed in the liquid feeding pipe and outputs a detection signal that changes in physical quantity corresponding to the flow rate of the detergent flowing through the liquid feeding pipe; When the supply amount of the detergent by the pump is calculated based on the physical amount of the detection signal and the supply amount is compared with a preset prescribed liquid amount, and the supply amount reaches the prescribed liquid amount And a controller for stopping the pump.

  The detergent supply device according to claim 4 is the detergent supply device according to claim 3, wherein the temperature sensor that measures the liquid temperature of the detergent and the liquid when the detergent flows through the liquid supply pipe at a predetermined flow rate. A storage unit that stores characteristic data indicating a relationship between a temperature and a reference physical quantity of the detection signal, and the control unit performs the measurement based on the liquid temperature and the characteristic data measured by the temperature sensor. A reference physical quantity of the detection signal at the liquid temperature is calculated, and the supply amount is calculated based on the reference physical quantity and the physical quantity of the detection signal detected by the flow meter.

  The detergent supply device according to claim 5 is the detergent supply device according to claim 3 or 4, wherein the controller is configured to supply the supply amount until a predetermined time elapses from the start of supply of the detergent to the container by the pump. When the prescribed liquid amount is not reached, a predetermined notification process is executed.

  According to the detergent supply device of the first aspect, the pump for supplying the detergent from the detergent tank by a predetermined amount to the liquid feeding pipe connected to the detergent tank is disposed, and the control unit determines the pump operation time and the total number of revolutions. By calculating the supply amount of the detergent on the basis of at least one, comparing the calculated supply amount with a preset prescribed liquid amount, and stopping the pump when the supply amount reaches the prescribed liquid amount, The supply amount can be changed accurately and easily by a simple operation of changing the specified liquid amount.

  According to the detergent supply device of claim 2, the temperature of the detergent is measured by the temperature sensor, the characteristic data indicating the relationship between the detergent temperature and the predetermined amount of the pump is stored in the storage unit, and the control unit is the detergent. By calculating the predetermined amount at this liquid temperature based on the liquid temperature and the characteristic data, and by calculating the supply amount of detergent based on this predetermined amount, the supply amount of detergents at various liquid temperatures can be specified more accurately. It can be metered and supplied to the liquid volume.

  According to the detergent supply device of the third aspect, the pump and the flow meter are respectively disposed in the liquid feeding pipe connected to the detergent tank, and the control unit is configured to control the detergent based on the physical quantity of the detection signal output from the flow meter. The supply amount is calculated and the calculated supply amount is compared with a preset prescribed liquid amount, and the prescribed liquid amount is changed by stopping the pump when the supply amount reaches the prescribed liquid amount. The supply amount can be changed accurately and easily with a simple operation.

  According to the detergent supply device of the fourth aspect, the temperature of the detergent is measured by the temperature sensor, and the relationship between the detergent liquid temperature and the reference physical quantity of the detection signal when flowing through the liquid feeding pipe at a predetermined flow rate is shown. The characteristic data is stored in the storage unit, and the control unit calculates the reference physical quantity of the detection signal at the liquid temperature based on the measured liquid temperature and the characteristic data, and the reference physical quantity and the detection signal detected by the flowmeter By calculating the supply amount of the detergent based on the physical amount, the supply amount of the detergent having various liquid temperatures can be more accurately measured and supplied to the specified liquid amount.

  According to the detergent supply device of the fifth aspect, the control unit performs a predetermined notification process when the supply amount of the detergent does not reach the specified liquid amount until a predetermined time has elapsed from the start of supply of the detergent to the container by the pump. By performing, for example, the specified amount of detergent is not being supplied due to malfunction such as pump failure, insufficient amount of detergent in the detergent tank, and clogging of the feeding pipe. This can be reliably notified to the operator.

  Hereinafter, the best mode of a detergent supply apparatus according to the present invention will be described with reference to the accompanying drawings.

(First embodiment)
Initially, the structure of the detergent supply apparatus 1 is demonstrated with reference to drawings.

  As shown in FIG. 1, the detergent supply apparatus 1 includes a plurality (three in this example as an example) of detergent tanks 2 a, 2 b, 2 c (hereinafter also referred to as “detergent tank 2” unless otherwise distinguished), a detergent tank 2. The same number of detergent cylinders 3a, 3b, 3c (hereinafter also referred to as “detergent cylinder 3” unless otherwise distinguished), and the same number of pumps 4a, 4b, 4c as the detergent tank 2 (hereinafter referred to as “pump 4” unless otherwise distinguished) Also, the same number of solenoid valves 6a, 6b, 6c as the detergent cylinder 3 (hereinafter also referred to as "electromagnetic valve 6" unless otherwise distinguished), temperature sensor 7, control unit 8, operation unit 9 and display unit 10 are provided. A liquid detergent for washing the milking machine stored in each detergent tank 2 is supplied to each corresponding detergent cylinder 3 by a prescribed liquid amount and weighed, and each weighed detergent is placed in a container (in this example) Washing tank) 1 And it is configured to be supplied to.

  In each of the detergent tanks 2, a disinfectant for sterilizing the inside of the milking machine is stored as a detergent in a small portion from a dedicated container (not shown). The other detergent tank 2b contains an alkaline detergent, which is a detergent for washing the inside of the milking machine, in small portions from a dedicated container (not shown), and the other detergent tank 2c contains the inside of the milking machine. An acidic detergent, which is a detergent for washing, is contained in small portions from a dedicated container (not shown). The detergent tanks 2a, 2b, and 2c are connected to the corresponding detergent cylinders 3a, 3b, and 3c and liquid feeding pipes 12a, 12b, and 12c (hereinafter also referred to as “liquid feeding pipe 12” unless otherwise specified). They are connected one-on-one. Each pump 4 is the same type of metering pump (as an example, a part of the tube is crushed by a crushing member (not shown) such as a cam or a roller so that it can be elastically recovered, and the crushing member is rotated to rotate the tube. A tube pump that exerts a suction force by moving the liquid), and a liquid feeding operation for transferring a predetermined amount (predetermined amount) of detergent by one operation (one rotation of the crushing member) becomes possible. ing. Each pump 4 operates when a control signal Sp1, Sp2, Sp3 (hereinafter also referred to as “control signal Sp” unless otherwise distinguished) is input from the control unit 8, and the crushing member is fixed. The liquid feeding operation is executed by rotating at the rotational speed. The pump 4a is disposed in the liquid feeding pipe 12a, the pump 4b is disposed in the liquid feeding pipe 12b, and the pump 4c is disposed in the liquid feeding pipe 12c.

  As shown in FIG. 1, each of the detergent cylinders 3a, 3b, and 3c has a liquid feed pipe 13a, 13b, and 13c for supplying the detergent stored therein to the cleaning tank 11 (hereinafter referred to as “ Also referred to as “liquid feeding pipe 13”). In addition, electromagnetic valves 6a, 6b, and 6c are disposed in the liquid feeding pipes 13a, 13b, and 13c, respectively. In this case, each electromagnetic valve 6a opens and closes based on the control signal Sv1 output from the control unit 8 to place the liquid supply pipe 13a in an open state or a closed state. Similarly, the electromagnetic valve 6b is based on the control signal Sv2 output from the control unit 8, and the electromagnetic valve 6c is also referred to as the control signal Sv3 output from the control unit 8 (hereinafter referred to as “control signal Sv” unless otherwise specified). Respectively) to open or close the corresponding liquid feeding pipes 13b and 13c. The temperature sensor 7 measures the temperature of the environment in which each detergent tank 2 or each detergent cylinder 3 is installed, and outputs the measured temperature as a liquid temperature Te common to each detergent stored in each detergent tank 2.

  As shown in FIG. 1, the control unit 8 includes a CPU 8a and a memory (storage unit in the present invention) 8b. In this case, the CPU 8a measures the output period of the control signal Sp for each pump 4, that is, the operation time (also the elapsed time from the start of supplying detergent) T of each pump 4. The memory 8b is a detergent (sterilization) showing the relationship between the liquid temperature Te of the metering pumps constituting each pump 4 and a predetermined amount (predetermined predetermined amount) M transferred by one operation (one rotation of the crushing member). Specific data Dt1, Dt2, Dt3 (hereinafter also referred to as “characteristic data Dt” unless otherwise specified) for each agent, alkaline detergent and acidic detergent), the number of operations n per unit time for the metering pumps constituting each pump 4 ROM storing pre-stored operation programs of the CPU 8a and the like, and storage of specified liquid amounts Qr1, Qr2, Qr3 (hereinafter also referred to as “specified liquid amount Qr” unless otherwise specified) of bactericides, alkaline detergents and acidic detergents RAM (not shown) that functions as a working memory as well as a working memory.

  In addition, the liquid such as each detergent has a characteristic that when the liquid temperature Te decreases, the viscosity increases and liquid feeding becomes difficult, and when the liquid temperature Te rises, the viscosity decreases and liquid feeding becomes easy. Generally have. For this reason, there is a relationship between the liquid temperature Te indicated by each characteristic data Dt and the predetermined amount of the metering pump that the predetermined amount increases as the liquid temperature Te rises. The control unit 8 configured as described above executes a storage process and a detergent supply process for the specified liquid amount Qr in accordance with a command input from the operation unit 9. The operation unit 9 is provided with various commands to be output to the control unit 8 and operation switches (not shown) for setting each specified liquid amount Qr. The display part 10 is comprised with a display apparatus as an example, and displays the result of a detergent supply process on a screen.

  Next, operation | movement of the detergent supply apparatus 1 is demonstrated concretely, referring FIG. In addition, as an example of a detergent, a disinfectant, an alkaline detergent, and an acidic detergent are used. Further, it is assumed that characteristic data Dt1, Dt2, and Dt3 for the disinfectant, alkaline detergent, and acidic detergent are stored in the memory 8b in advance.

  In the detergent supply device 1, in the operating state, the temperature sensor 7 repeatedly performs an operation of measuring the temperature (air temperature) of the environment in which the detergent tank 2 and the like are arranged and outputting it as the liquid temperature Te. In addition, the control unit 8 repeatedly detects whether or not a command to start storing the specified liquid amount Qr and a command to start detergent supply processing are output from the operation unit 9.

  In this state, the operation unit 9 instructs the control unit 8 to store the specified liquid amount Qr for at least one of the disinfectant, alkaline detergent, and acidic detergent (store the specified liquid amount Qr). When the process start command is output, the control unit 8 executes the storage process of the prescribed liquid amount Qr shown in FIG. The control unit 8 stores the specified liquid amount Qr input from the operation unit 9 in the memory 8b by executing the storage process of the same specified liquid amount Qr for any of the disinfectant, the alkaline detergent, and the acidic detergent. For this reason, the storage process of the defined liquid amount Qr1 of the bactericide will be described below as an example.

  In the storage process of the specified liquid amount Qr, the control unit 8 inputs the specified liquid amount Qr (specified liquid amount Qr1) from the operation unit 9 together with a command to store the specified liquid amount Qr (specified liquid amount Qr1) ( Next, the control unit 8 stores the input specified liquid amount Qr (specified liquid amount Qr1) in the memory 8b (step 52). When storing the specified liquid amount Qr in the memory 8b, the control unit 8 stores the input specified liquid amount Qr (specified liquid amount Qr1) in association with the type of detergent (disinfectant). This storage process is completed by storing the specified liquid amount Qr (specified liquid amount Qr1) in the memory 8b. Thereafter, the control unit 8 repeats detection of whether or not the start command for the storage process of the prescribed liquid amount Qr and the start command for the detergent supply process are output from the operation unit 9 again. The storage process for the prescribed liquid amount Qr is performed in advance for each detergent prior to the detergent supply process, and the prescribed liquid quantity Qr for each detergent is stored in the memory 8b.

  In this state, when a command for supplying any one of the disinfectant, alkaline detergent and acidic detergent to the washing tank 11 is output from the operation unit 9 to the control unit 8, the control unit 9 8 executes the detergent supply process shown in FIG. In addition, the control part 8 performs the same detergent supply process and supplies it to the washing tank 11 about any of a disinfectant, an alkaline detergent, and an acidic detergent. For this reason, below, supply of a disinfectant will be described as an example.

  In this detergent supply process, the controller 8 uses the temperature measured by the temperature sensor 7 as the liquid temperature Te of the detergent (disinfectant), and characteristic data Dt (characteristics) about the detergent (disinfectant) stored in the memory 8b. Based on the data Dt1), a predetermined amount (a predetermined fixed amount) M for the metering pump constituting the pump 4 (pump 4a) at the liquid temperature Te is calculated, and the calculated predetermined amount M is stored in the memory 8b ( Step 61).

  Next, the control unit 8 outputs the control signal Sp (control signal Sp1), thereby operating the pump 4 (pump 4a) to start the liquid feeding operation (step 62). As a result, the detergent (disinfectant) stored in the detergent tank 2 (detergent tank 2a) is transferred to the detergent cylinder 3 (detergent cylinder 3a) via the liquid feed pipe 12 (liquid feed pipe 12a) by the operating pump 4a. Begins to be fed in. Further, in step 62, the control unit 8 starts measuring the elapsed time T from the start of the supply of the bactericide, and measures the elapsed time T, the predetermined amount M and the number of operations stored in the memory 8b. On the basis of n, calculation of the supply amount B of the detergent (disinfectant) supplied to the detergent cylinder 3 (detergent cylinder 3a) by the liquid feeding operation of the pump 4 (pump 4a) is started. The supply amount B is calculated by multiplying the elapsed time T by a predetermined amount M and the number of operations n. In addition, the detergent supply amount B calculated in this way takes into account that the predetermined amount M of the pump 4 (pump 4a) changes due to a change in viscosity due to the temperature of the detergent (disinfectant). Since it is calculated, it is an accurate value very close to the amount of liquid actually supplied to the detergent cylinder 3 (detergent cylinder 3a).

  Next, the control unit 8 detects whether or not the current supply amount B has reached the specified liquid amount Qr (step 63). The controller 8 repeatedly executes step 63 until it is detected in step 63 that the supply amount B has reached the specified liquid amount Qr. Subsequently, when the control unit 8 detects in step 63 that the supply amount B has reached the specified liquid amount Qr, the control unit 8 immediately stops outputting the control signal Sp (control signal Sp1) to the pump 4 (pump 4a). Then, the operation of the pump 4 is stopped (step 64). As a result, the disinfectant is measured to the specified liquid amount Qr and is stored in the detergent cylinder 3a.

  Finally, the control unit 8 outputs a control signal Sv (control signal Sv1) to the solenoid valve 6 (solenoid valve 6a) for a predetermined time (step 65). In this case, the predetermined time is set in advance to a time sufficient for supplying the detergent of the specified liquid amount stored in the detergent cylinder 3 to the cleaning tank 11 through the liquid feeding pipe 13. Thereby, when the output of the control signal Sv to the electromagnetic valve 6 by the control unit 8 is completed, the supply process of the detergent (disinfectant) to the cleaning tank 11 is completed, thereby completing the detergent supply process.

  In the above, the detergent supply process has been described by taking the supply of the bactericide to the washing tank 11 as an example. However, the alkaline detergent and the acid detergent are also sterilized from the operation unit 9 in the same manner as in the case of supplying the bactericide. When a command for storing the prescribed liquid amount Qr for at least one of the detergent, alkaline detergent and acidic detergent is output, the control unit 8 executes the prescribed liquid amount Qr storage process shown in FIG. As a result, the prescribed liquid amount Qr of each detergent input from the operation unit 9 is stored in the memory 8b. Further, when the control unit 8 that has received a command to supply alkaline detergent from the operation unit 9 executes the detergent supply process shown in FIG. 3, the alkaline detergent stored in the detergent tank 2b is stored in the detergent cylinder 3b. The amount is measured and supplied to the cleaning tank 11. Similarly, the acid detergent was stored in the detergent tank 2c when the control unit 8 receiving the instruction to supply the acid detergent from the operation unit 9 executes the detergent supply process shown in FIG. The acid detergent is weighed by the specified amount in the detergent cylinder 3 c and supplied to the washing tank 11.

  As described above, according to the detergent supply device 1, the pump 4 that supplies the detergent from the detergent tank 2 by a predetermined amount to the liquid feeding pipe 12 connected to the detergent tank 2 is disposed, and the control unit 8 causes the elapsed time ( The detergent supply amount B is calculated on the basis of T, the predetermined amount M, and the number of operations n (which is also the operation time of the pump 4), and the calculated supply amount B is compared with a preset specified liquid amount Qr. By stopping the pump 4 when the supply amount B reaches the specified liquid amount Qr, the supply amount B can be accurately and easily changed by a simple operation of changing the specified liquid amount Qr.

  Further, according to the detergent supply device 1, the detergent liquid temperature Te is measured by the temperature sensor 7, and the characteristic data Dt indicating the relationship between the detergent liquid temperature Te and the predetermined amount M of the pump 4 is stored in the memory 8b. The control unit 8 calculates the predetermined amount M at the liquid temperature Te based on the liquid temperature Te and the characteristic data Dt of the detergent, and calculates the supply amount B of the detergent based on the predetermined amount M. The supply amount B of the detergent at the liquid temperature can be more accurately measured and supplied to the specified liquid amount Qr.

  The present invention is not limited to the configuration described above. For example, in the above embodiment, the elapsed time (which is also the operation time of the pump 4) T from the start of supply of the detergent is measured, and based on the elapsed time T, the predetermined amount M, and the number of operations n, the detergent Although the example which employ | adopts the structure which calculates the supply amount B of this is demonstrated, the total rotation speed (operation frequency) Ns of the pump 4 from the start of supply of a detergent is measured, and predetermined amount is added to total rotation speed (operation frequency) Ns. A configuration in which the supply amount B is calculated by multiplying M may be employed.

(Second Embodiment)
Initially, the structure of 1 A of detergent supply apparatuses is demonstrated with reference to drawings.

  As shown in FIG. 4, the detergent supply device 1 </ b> A includes a flow meter 5 in addition to the configuration of the detergent supply device 1. Specifically, the detergent supply device 1A includes a plurality (three in this example as an example) of detergent tanks 2a, 2b, 2c (hereinafter also referred to as “detergent tank 2” unless otherwise distinguished), and the same number of detergent tanks 2. Detergent cylinders 3a, 3b, 3c (hereinafter also referred to as "detergent cylinder 3" unless otherwise distinguished), and the same number of pumps 4a, 4b, 4c as the detergent tank 2 (hereinafter also referred to as "pump 4" unless otherwise distinguished). ), The same number of flow meters 5a, 5b, 5c as the detergent tank 2 (hereinafter also referred to as “flow meter 5”), and the same number of solenoid valves 6a, 6b, 6c as the detergent cylinder 3 (hereinafter particularly distinguished). (Also referred to as “electromagnetic valve 6”), a temperature sensor 7, a control unit 8, an operation unit 9, and a display unit 10, and each corresponding liquid detergent for washing a milking machine stored in each detergent tank 2. Detergent Siri And supplies only predefined normal solution amount Da 3 were weighed, and is configured to be supplied to the 11 (cleaning tank in this example) each detergent was weighed container.

  In each of the detergent tanks 2, a disinfectant for sterilizing the inside of the milking machine is stored as a detergent in a small portion from a dedicated container (not shown). The other detergent tank 2b contains an alkaline detergent, which is a detergent for washing the inside of the milking machine, in small portions from a dedicated container (not shown), and the other detergent tank 2c contains the inside of the milking machine. An acidic detergent, which is a detergent for washing, is contained in small portions from a dedicated container (not shown). The detergent tanks 2a, 2b, and 2c are connected to the corresponding detergent cylinders 3a, 3b, and 3c and liquid feeding pipes 12a, 12b, and 12c (hereinafter also referred to as “liquid feeding pipe 12” unless otherwise specified). They are connected one-on-one. Each pump 4 is constituted by a tube pump as an example, and operates when a control signal Sp1, Sp2, Sp3 (hereinafter also referred to as “control signal Sp” unless otherwise distinguished) is input from the control unit 8. . The pump 4a is disposed in the liquid feeding pipe 12a, the pump 4b is disposed in the liquid feeding pipe 12b, and the pump 4c is disposed in the liquid feeding pipe 12c.

  Each flow meter 5a, 5b, 5c is constituted by an impeller type flow meter as an example. The flow meter 5a is connected to the liquid supply pipe 12a, the flow meter 5b is connected to the liquid supply pipe 12b, and the flow meter 5c is connected to the liquid supply pipe 12c. Each is arranged. Further, each flow meter 5a, 5b, 5c has a pulse signal Sf1, having a frequency f (corresponding to a physical quantity that changes in accordance with the flow rate of the detergent in the present invention) proportional to the flow rate of the detergent flowing through each liquid feeding pipe 12. Sf2 and Sf3 (hereinafter also referred to as “detection signal Sf” unless otherwise distinguished) are generated and output. In this example, each flow meter 5 is disposed on the upstream side of each liquid feeding pipe 12 with respect to each pump 4, but may be disposed on the downstream side.

  As shown in FIG. 4, each of the detergent cylinders 3 a, 3 b, 3 c has liquid feed pipes 13 a, 13 b, 13 c for supplying the detergent stored therein to the cleaning tank 11 (hereinafter referred to as “ Also referred to as “liquid feeding pipe 13”). In addition, electromagnetic valves 6a, 6b, and 6c are disposed in the liquid feeding pipes 13a, 13b, and 13c, respectively. In this case, each electromagnetic valve 6a opens and closes based on the control signal Sv1 output from the control unit 8 to place the liquid supply pipe 13a in an open state or a closed state. Similarly, the electromagnetic valve 6b is based on the control signal Sv2 output from the control unit 8, and the electromagnetic valve 6c is also referred to as the control signal Sv3 output from the control unit 8 (hereinafter referred to as “control signal Sv” unless otherwise specified). Respectively) to open or close the corresponding liquid feeding pipes 13b and 13c. The temperature sensor 7 measures the temperature of the environment in which each detergent tank 2 or each detergent cylinder 3 is installed, and outputs the measured temperature as a liquid temperature Te common to each detergent stored in each detergent tank 2.

  As shown in FIG. 4, the control unit 8 includes a CPU 8a and a memory (storage unit in the present invention) 8b. In this case, the CPU 8a inputs the detection signal Sf (pulse signal) output from each flow meter 5 and detects the frequency (physical quantity in the present invention) f. The memory 8b includes a reference time (predetermined time in the present invention) Tr for detecting an abnormality in the liquid feeding operation of the detergent (disinfectant, alkaline detergent and acidic detergent), each detergent (disinfectant, alkaline detergent and Characteristic data Df1, Df2, Df3 (hereinafter referred to as “not specifically distinguished”) indicating the relationship between the liquid temperature Te for the acid detergent and the frequency f of the detection signal Sf as the reference physical quantity output from each flow meter 5 in the present invention. Characteristic data Df ”), ROM in which the operation program of the CPU 8a is stored in advance, and specified liquid amounts Qr1, Qr2, Qr3 (hereinafter referred to as“ specified liquid amount ”unless otherwise specified). Qr "storage memory and a RAM (not shown) that functions as a working memory.

  Each characteristic data Df acquired the relationship between the liquid temperature Te and the frequency f of the detection signal Sf when each detergent is flowing through each liquid feeding pipe 12 at a predetermined flow rate (predetermined constant flow rate) A. It is data. In this case, since the viscosity of each detergent decreases as the liquid temperature Te increases, the characteristic data Df indicates that the rotational speed of the impeller of each flowmeter 5 increases in proportion to the liquid temperature Te even at the same flow rate. That is, the frequency f of the detection signal Sf output from each flow meter 5 also increases in proportion to the liquid temperature Te. The control unit 8 configured as described above executes a storage process and a detergent supply process for the specified liquid amount Qr in accordance with a command input from the operation unit 9. The operation unit 9 is provided with various commands to be output to the control unit 8 and operation switches (not shown) for setting each specified liquid amount Qr. The display part 10 is comprised with a display apparatus as an example, and displays the result of a detergent supply process on a screen.

  Next, operation | movement of 1 A of detergent supply apparatuses is demonstrated concretely, referring FIG. In addition, as an example of a detergent, a disinfectant, an alkaline detergent, and an acidic detergent are used. Further, as the characteristic data Df1, Df2, and Df3 for the disinfectant, the alkaline detergent, and the acidic detergent, data (a data table in this example) showing the relationship between the liquid temperature Te and the frequency f shown in FIG. 6 is stored in the memory 8b. ing.

  In the detergent supply device 1A, in the operating state, the temperature sensor 7 repeatedly performs an operation of measuring the temperature (air temperature) of the environment in which the detergent tank 2 and the like are disposed and outputting the measured temperature as the liquid temperature Te. In addition, the control unit 8 repeatedly detects whether or not a command to start storing the specified liquid amount Qr and a command to start detergent supply processing are output from the operation unit 9.

  In this state, the operation unit 9 instructs the control unit 8 to store the specified liquid amount Qr for at least one of the disinfectant, alkaline detergent, and acidic detergent (store the specified liquid amount Qr). When the process start command is output, the control unit 8 executes the storage process of the prescribed liquid amount Qr shown in FIG. The control unit 8 stores the specified liquid amount Qr input from the operation unit 9 in the memory 8b by executing the storage process of the same specified liquid amount Qr for any of the disinfectant, the alkaline detergent, and the acidic detergent. For this reason, the storage process of the defined liquid amount Qr1 of the bactericide will be described below as an example.

  In the storage process of the specified liquid amount Qr, the control unit 8 inputs the specified liquid amount Qr (specified liquid amount Qr1) from the operation unit 9 together with a command to store the specified liquid amount Qr (specified liquid amount Qr1) ( Next, the control unit 8 stores the input specified liquid amount Qr (specified liquid amount Qr1) in the memory 8b (step 52). When storing the specified liquid amount Qr in the memory 8b, the control unit 8 stores the input specified liquid amount Qr (specified liquid amount Qr1) in association with the type of detergent (disinfectant). This storage process is completed by storing the specified liquid amount Qr (specified liquid amount Qr1) in the memory 8b. Thereafter, the control unit 8 repeats detection of whether or not the start command for the storage process of the prescribed liquid amount Qr and the start command for the detergent supply process are output from the operation unit 9 again. The storage process for the prescribed liquid amount Qr is performed in advance for each detergent prior to the detergent supply process, and the prescribed liquid quantity Qr for each detergent is stored in the memory 8b.

  In this state, when a command for supplying any one of the disinfectant, alkaline detergent and acidic detergent to the washing tank 11 is output from the operation unit 9 to the control unit 8, the control unit 9 8 executes the detergent supply process shown in FIG. In addition, the control part 8 performs the same detergent supply process and supplies it to the washing tank 11 about any of a disinfectant, an alkaline detergent, and an acidic detergent. For this reason, below, supply of a disinfectant will be described as an example.

  In this detergent supply process, the control unit 8 uses the temperature measured by the temperature sensor 7 as the liquid temperature Te of the detergent (disinfectant), and characteristic data Df (characteristics) about the detergent (disinfectant) stored in the memory 8b. Based on the data Df1), the detection output from the flow meter 5 (flow meter 5a) when the detergent (disinfectant) of this liquid temperature Te flows through the liquid feed pipe 12 (liquid feed pipe 12a) at a predetermined flow rate A. The frequency (reference frequency fr. Reference physical quantity in the present invention) of the signal Sf (detection signal Sf1) is calculated (step 91). For example, when the current liquid temperature is 13 ° C., the control unit 8 calculates the reference frequency fr of the disinfectant as 5 Hz based on the characteristic data Df1, as shown in FIG. Further, the control unit 8 stores the calculated reference frequency fr in the memory 8b.

  Next, the control unit 8 outputs the control signal Sp (control signal Sp1), thereby operating the pump 4 (pump 4a) to start the liquid feeding operation (step 92). As a result, the detergent (disinfectant) stored in the detergent tank 2 (detergent tank 2a) is transferred to the detergent cylinder 3 (detergent cylinder 3a) via the liquid feed pipe 12 (liquid feed pipe 12a) by the operating pump 4a. Begins to be fed in. Further, in step 92, the control unit 8 starts measuring the elapsed time T from the start of the supply of the bactericide, and based on the reference frequency fr and the frequency f of the detection signal Sf (detection signal Sf1). Calculation of the supply amount B of the detergent (disinfectant) supplied to the detergent cylinder 3 (detergent cylinder 3a) by the liquid feeding operation of the pump 4 (pump 4a) is started. This supply amount B is obtained by detecting the frequency f of the detection signal Sf (detection signal Sf1) every unit time (for example, 1 second) and obtaining the current flow rate C (= A × f / fr). It is calculated by repeatedly executing the process of accumulating C. Further, the detergent supply amount B calculated in this way is calculated in consideration of the change in the flow rate due to the change in viscosity due to the temperature of the detergent (disinfectant), so that the detergent cylinder is actually used. 3 (detergent cylinder 3a) is an accurate value very close to the amount of liquid supplied.

  Next, the control unit 8 determines whether or not the measured elapsed time T has reached the reference time Tr stored in the memory 8b in advance (step 93), and the elapsed time T has not reached the reference time Tr. Sometimes, subsequently, it is detected whether or not the current supply amount B has reached the specified liquid amount Qr (step 94). The control unit 8 determines that the elapsed time T has reached the reference time Tr in step 93, or the above steps 93 and 94 are detected until it is detected in step 94 that the supply amount B has reached the specified liquid amount Qr. Run repeatedly. In this case, when the detergent tank 2 stores a detergent of the specified liquid amount Qr or more, the pump 4 operates normally, and no abnormality such as clogging occurs in the liquid feeding pipe 12, the disinfectant The supply amount B reaches the specified liquid amount Qr before the elapsed time T from the start of supply reaches the reference time Tr.

  Subsequently, the control unit 8 detects that the supply amount B has reached the specified liquid amount Qr, immediately stops the output of the control signal Sp (control signal Sp1) to the pump 4 (pump 4a), and the pump 4 Is stopped (step 95). As a result, the disinfectant is measured to the specified liquid amount Qr and is stored in the detergent cylinder 3a.

  Finally, the control unit 8 outputs a control signal Sv (control signal Sv1) to the solenoid valve 6 (solenoid valve 6a) for a predetermined time (step 96). In this case, the predetermined time is set in advance to a time sufficient for supplying the detergent of the specified liquid amount stored in the detergent cylinder 3 to the cleaning tank 11 through the liquid feeding pipe 13. Thereby, when the output of the control signal Sv to the electromagnetic valve 6 by the control unit 8 is completed, the supply process of the detergent (disinfectant) to the cleaning tank 11 is completed.

  On the other hand, when the control unit 8 repeatedly executes Steps 93 and 94, when the elapsed time T reaches the reference time Tr before the supply amount B reaches the specified liquid amount Qr, the pump 4 After stopping the output of the control signal Sp to the pump 4 and stopping the pump 4 (step 97), a predetermined notification process is executed (step 98). In this example, as an example, the control unit 8 has an abnormality in the liquid feeding operation of the detergent (disinfectant) from the detergent tank 2 (detergent tank 2a) to the detergent cylinder 3 (detergent cylinder 3a) as the notification process. Information (for example, letters “abnormal liquid feeding”) is displayed on the display unit 10. The operator can recognize that the detergent is not supplied to the washing tank 11 by executing the notification process, and the cause thereof is a failure of the pump 4 (pump 4a), the detergent tank 2 (detergent tank 2a). It is possible to recognize that there is a possibility that at least one defect of the liquid amount of the detergent (disinfectant) in the parenthesis and the clogging of the liquid feeding pipe 12 (liquid feeding pipe 12a) may have occurred. After execution of the notification process, the control unit 8 ends the detergent supply process.

  In the above, the detergent supply process has been described by taking the supply of the bactericide to the washing tank 11 as an example. However, the alkaline detergent and the acid detergent are also sterilized from the operation unit 9 in the same manner as in the case of supplying the bactericide. When a command for storing the prescribed liquid amount Qr for at least one of the detergent, alkaline detergent and acidic detergent is output, the control unit 8 executes the prescribed liquid amount Qr storage process shown in FIG. As a result, the prescribed liquid amount Qr of each detergent input from the operation unit 9 is stored in the memory 8b. Further, when the control unit 8 that has received a command to supply alkaline detergent from the operation unit 9 executes the detergent supply process shown in FIG. 5, the alkaline detergent stored in the detergent tank 2b is stored in the detergent cylinder 3b. The amount is measured and supplied to the cleaning tank 11. Similarly, the acid detergent was stored in the detergent tank 2c when the control unit 8 receiving the instruction to supply the acid detergent from the operation unit 9 executes the detergent supply process shown in FIG. The acid detergent is weighed by the specified amount in the detergent cylinder 3 c and supplied to the washing tank 11.

  Further, in the detergent supply process of the alkaline detergent and the acidic detergent, the control unit 8 has elapsed before the supply amount B reaches the specified liquid amount in the state where the above-described steps 93 and 94 are repeatedly executed. When the time T reaches the reference time Tr, the output of the control signals Sp2 and Sp3 to the pumps 4b and 4c is stopped to stop the pumps 4b and 4c, and the display unit 10 displays “liquid feeding abnormality” ( By performing a predetermined notification process), the operator may have a failure of the pumps 4b and 4c, an insufficient amount of alkaline detergent or acidic detergent in the detergent tanks 2b and 2c, and clogging of the liquid feeding pipes 12b and 12c. Notify that there is a risk of the occurrence of a malfunction.

  As described above, according to the detergent supply device 1A, the pump 4 and the flow meter 5 are arranged on the liquid feeding pipe 12 connected to the detergent tank 2, and the detection signal output from the flow meter 5 by the control unit 8 is provided. When the detergent supply amount B is calculated based on the frequency f of Sf, and the calculated supply amount B is compared with a preset specified liquid amount Qr, the supply amount B reaches the specified liquid amount Qr. By stopping the pump 4, the supply amount B can be accurately and easily changed by a simple operation of changing the specified liquid amount Qr.

  Further, according to this detergent supply device 1A, the detergent liquid temperature Te is measured by the temperature sensor 7, and the detergent liquid temperature Te and the frequency f of the detection signal Sf when flowing through the liquid feeding pipe 12 at a predetermined flow rate A are obtained. Characteristic data Df indicating the relationship with (reference physical quantity) is stored in the memory 8b, and the control unit 8 controls the reference frequency fr (reference physical quantity of the detection signal Sf at the liquid temperature Te based on the liquid temperature Te and the characteristic data Df of the detergent. ) And the detergent supply amount B based on the reference frequency fr and the frequency f of the detection signal Sf, the detergent supply amount B of various liquid temperatures can be more accurately set to the specified liquid amount Qr. Can be measured and supplied.

  Furthermore, according to the detergent supply device 1A, when the detergent supply amount B does not reach the specified liquid amount Qr before the reference time Tr elapses from the start of supply of the detergent to the detergent cylinder 3 by the pump 4, the control unit 8 By executing the notification process, for example, the detergent having the prescribed liquid amount Qr due to the failure of the pump 4, the shortage of the detergent liquid in the detergent tank 2, and the occurrence of problems such as the clogging of the liquid feeding pipe 12. It is possible to reliably notify the operator that there is no supply.

  The present invention is not limited to the configuration described above. For example, in the above-described embodiment, the configuration of the detergent supply device 1A is defined by using the temperature measured by one temperature sensor 7 (the temperature (air temperature) of the environment in which the detergent tank 2 or the like is installed) as the liquid temperature Te of each detergent. Although a simplified example has been described, for example, a configuration in which the temperature sensor 7 is disposed in each detergent tank 2 and the liquid temperature Te of each detergent is directly measured may be employed. According to this configuration, the liquid temperature Te of each detergent can be measured more accurately, and as a result, the supply amount B of each detergent can be calculated more accurately, whereby each detergent can be more accurately set to the specified liquid amount Qr. Can be measured and supplied.

  Moreover, in said detergent supply apparatus 1 and 1A, although the washing tank 11 was mentioned as an example as a container for the purpose of supplying detergent, containers other than the washing tank 11, for example, the bulk cooler which comprises a part of milking machine Of course, the present invention can also be used when measuring and supplying detergent. Hereinafter, an example in which detergent is supplied to the bulk cooler by each detergent supply device 1 will be described with reference to FIG.

  In this case, each liquid supply pipe 13 of each detergent supply device 1, 1 </ b> A is connected to an intermediate portion of a circulation pipe 70 that circulates the detergent. One end of the circulation pipe 70 is connected to the bottom of a bulk cooler 71 for cooling and storing the raw milk after milking, and a drain valve 72 is disposed at the other end of the circulation pipe 70. Further, one end of the branch pipe 73 is connected between the connection portion of each liquid feeding pipe 13 in the circulation pipe 70 and the drain valve 72, and the other end of the branch pipe 73 is connected to the water supply port 74 a of the circulation pump 74. Yes. In addition, one end of a liquid supply pipe 75 is connected to the water supply port 74 b of the circulation pump 74, and the other end of the liquid supply pipe 75 is formed into a fork, and is inserted into the bulk cooler 71 from the ceiling wall of the bulk cooler 71. Has been. Furthermore, a diffusion blade 76 is disposed in the upper part of the bulk cooler 71. Further, the tip of a water supply pipe 77 is connected to the middle part of the branch pipe 73. In addition, the tip of a hot water supply pipe 78 is connected between the portion where the drain valve 72 is provided in the circulation pipe 70 and the connection portion of the branch pipe 73. In addition, the water supply pipe 77 and the hot water supply pipe 78 are provided with opening and closing valves 79 and 80, respectively.

  Next, the cleaning process of the bulk cooler 71 using the detergent supplied by the detergent supply devices 1 and 1A will be described.

  First, with the drain valve 72 closed, the opening / closing valve 79 or the opening / closing valve 80 is opened, and water or hot water for cleaning liquid is supplied into the bulk cooler 71 through the circulation pipe 70. Next, the opening / closing valve 79 or the opening / closing valve 80 is closed, the circulation pump 74 is operated, and the cleaning liquid water or hot water stored in the bulk cooler 71 is supplied into the circulation pipe 70, the branch pipe 73, and the liquid feed pipe 75. And circulate in and out of the bulk cooler 71. At this time, by operating at least one of the electromagnetic valves 6, three kinds of detergents are fixed to the cleaning liquid water or hot water circulating through the circulation pipe 70 through the three liquid supply pipes 13. Supply each by volume and mix the detergent into the water or hot water for the cleaning solution. Subsequently, cleaning water or hot water mixed with detergent is circulated in and out of the bulk cooler 71, sprayed from the bifurcated tip of the liquid feeding pipe 75, and sprayed onto the diffusion blade 76. As a result, water or hot water for cleaning liquid mixed with detergent is sprayed evenly on the inner peripheral wall of the bulk cooler 71, and the inner peripheral wall of the bulk cooler 71 is cleaned. In addition, the bulk cooler 71 has a configuration in which a stirring blade 81 is provided at the inner bottom portion thereof, and the detergent mixed in the cleaning liquid water or hot water stored in the inner bottom portion is uniformly diffused.

  Moreover, although each said embodiment gave and demonstrated the example which supplies each detergent to the washing tank 11 and the bulk cooler 71 via each detergent cylinder 3, in the detergent supply apparatus 1 in this invention, each pump 4 The supply amount B of each detergent by the liquid feeding operation is accurately based on the elapsed time T from the start of the detergent supply, the predetermined amount M, and the number of operations n (or the total rotation speed Ns and the predetermined amount M of the pump 4). In the detergent supply device 1A of the present invention, the frequency f of the detection signal Sf from each flow meter 5, the characteristic data Df1, Df2, Df3 of each detergent stored in the memory 8b, and Since each characteristic data Df can be accurately calculated based on the predetermined flow rate A of the detergent, the arrangement of each detergent cylinder 3, each liquid feeding pipe 13, and each solenoid valve 6 is omitted. It may be employed to supply configuration directly metered detergent into the cleaning tank 11 and a bulk cooler 71. According to this configuration, since the arrangement of the detergent cylinder 3 and the like can be omitted, the apparatus cost can be reduced.

  Moreover, in said detergent supply apparatus 1A, although the impeller-type flow meter is employ | adopted as the flow meter 5, if the flow velocity is a flow meter for medium speed to low speed, flow meters other than this method, for example, a difference A pressure flow meter, an electromagnetic flow meter, an area flow meter, or an ultrasonic flow meter can be used. In addition, as an example of the physical quantity of the detection signal output from the flow meter, the example using the frequency has been described above. However, the physical quantity other than the frequency (amplitude, DC level, etc.) is used in accordance with the various types of flow meters as described above. ) May be used. Moreover, in said detergent supply apparatus 1 and 1A, although the structure which supplies three types of detergent is employ | adopted, about the detergent supply apparatus 1, the detergent tank 2, the pump 4, and the liquid feeding pipe 12 (further, By increasing or decreasing the number of detergent cylinders 3 and solenoid valves 6 according to the type of detergent, and for the detergent supply device 1A, the detergent tank 2, the pump 4, the flow meter 5, and the liquid feeding pipe 12 (and more In addition, by increasing or decreasing the number of detergent cylinders 3 or solenoid valves 6 according to the type of detergent, it can also be used when supplying one or two kinds of detergents or four or more kinds of detergents. In addition, although an example in which a display device is used as the display unit 10 has been described above, notification can be performed using a display device such as an LED and a lamp instead of or together with the display device, a buzzer, a speaker, and the like. It is also possible to notify using the ringing device.

  Moreover, in said detergent supply apparatus 1A, in step 93 which detects the abnormality which generate | occur | produced in the pump 4 in the detergent supply process, the liquid feeding pipe 12, etc., it demonstrated and demonstrated the example using common reference time Tr about each detergent. However, the time required to supply the specified liquid amount Qr is greatly different for each detergent because the specified liquid amounts Qr1, Qr2, Qr3 of each detergent are greatly different or the viscosity of each detergent is greatly different. In this case, the reference time Tr can be set individually for each detergent. By adopting this configuration, it is possible to avoid a situation where the detergent supply operation is continued for a long time under a situation where an abnormality has occurred.

1 is a configuration diagram illustrating a configuration of a detergent supply device 1. FIG. It is a flowchart of the memory | storage process of the regular liquid amount by the detergent supply apparatuses 1 and 1A. It is a flowchart of the detergent supply process by the detergent supply apparatus. It is a block diagram which shows the structure of 1 A of detergent supply apparatuses. It is a flowchart of the detergent supply process by 1 A of detergent supply apparatuses. It is a characteristic view which shows the relationship between the liquid temperature Te of each detergent, and the reference frequency f. It is a block diagram which shows the structure of the bulk cooler of a milking machine, and its periphery.

Explanation of symbols

1,1A Detergent supply device 2a, 2b, 2c Detergent tank 4a, 4b, 4c Pump 5a, 5b, 5c Flow meter 7 Temperature sensor 8 Control unit 8b Memory 12a, 12b, 12c Liquid feed pipe B Supply amount Df, Dt Characteristic data f frequency fr reference frequency Ns total rotation speed Qr specified liquid amount Sf detection signal T operating time Tr reference time

Claims (5)

A detergent supply device that measures and supplies a liquid detergent for washing a milking machine stored in a detergent tank,
A pump disposed in a liquid feed pipe connected to the detergent tank and supplying the detergent from the detergent tank by a predetermined amount;
The supply amount of the detergent by the pump is calculated based on at least one of the operation time and the total number of revolutions of the pump, and the supply amount is compared with a preset specified liquid amount, and the supply amount is determined to be the specified value. A detergent supply device comprising: a control unit that stops the pump when the liquid amount is reached. A temperature sensor for measuring the temperature of the detergent;
A storage unit that stores characteristic data indicating a relationship between the liquid temperature and the predetermined amount;
The control unit specifies the predetermined amount at the measured liquid temperature based on the liquid temperature measured by the temperature sensor and the characteristic data, and the specified predetermined amount and an operation time of the pump The detergent supply device according to claim 1, wherein the supply amount is calculated based on at least one of the total rotational speed. A detergent supply device that measures and supplies a liquid detergent for washing a milking machine stored in a detergent tank,
A pump for supplying the detergent from the detergent tank disposed in a liquid feed pipe connected to the detergent tank;
A flowmeter that outputs a detection signal that changes in physical quantity corresponding to the flow rate of the detergent that is disposed in the liquid supply pipe and flows through the liquid supply pipe;
When the supply amount of the detergent by the pump is calculated based on the physical amount of the detection signal and the supply amount is compared with a preset prescribed liquid amount, and the supply amount reaches the prescribed liquid amount And a control unit for stopping the pump. A temperature sensor for measuring the temperature of the detergent;
A storage unit for storing characteristic data indicating a relationship between the liquid temperature and the reference physical quantity of the detection signal when the detergent flows through the liquid supply pipe at a predetermined flow rate;
The control unit calculates a reference physical quantity of the detection signal at the measured liquid temperature based on the liquid temperature measured by the temperature sensor and the characteristic data, and detects the reference physical quantity and the flow meter. The detergent supply device according to claim 3, wherein the supply amount is calculated based on the physical quantity of the detected signal.   The said control part performs a predetermined | prescribed alerting | reporting process, when the said supply amount does not reach | attain the said prescribed liquid amount by the time when predetermined time passes after the supply start of the said detergent to the said container by the said pump. Detergent supply device as described.

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