KR101636130B1 - Device for supplying hot water - Google Patents

Abstract

Provided is a hot water supply device capable of reducing energy consumption by suppressing wasteful storage of hot water in hot water by taking into consideration the amount of water to be used in addition to the temperature of hot water used in each time zone.
(5) for setting a plurality of time zones by dividing a day into a plurality of times in correspondence with a life pattern of a user regarding hot water supply, boiling temperature setting means for setting a boiling temperature for each time zone 5) for setting the number of bean sprouts, and non-beaning quantity setting means 5 for setting the quantity of bean sprouts for each time period. The boiling temperature set by the boiling temperature setting means 5 in correspondence with the current time indicated by the clock means 5 is set as the target boiling point set by the boiling temperature setting means 5 when the quantity of the detected water by the low boiling quantity detecting means 6a, 6b, Tank boiling control means 21 for performing boiling of the boiled water in the storage tank 4 by the heating means 20 for the tank until the boiling water amount set by the non-boiled water quantity setting means 5 is reached ).

Description

{Device for supplying hot water}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply system in which an instantaneous heating type hot water heater is connected to a downstream side of a storage tank for storing heated hot water.

BACKGROUND OF THE INVENTION [0002] Conventionally, there is known a so-called " hot water tank " in which a hot water tank for storing hot water, a water supply pipe for supplying water into the hot water tank, a hot water tank for discharging hot water stored in the hot water tank, There is known a hot water supply system which is connected in series to the downstream side of a tank and which has a sequential combustion hot water heater for heating hot water flowing through the hot water tank by combustion of a burner (see Patent Document 1).

The heat pump has a very high energy efficiency, but the heating capacity per unit time is low, so it takes a comparatively long time to boil a large amount of hot water. Therefore, by providing the combustion hot water tank as an auxiliary heat source when the hot water in the hot water tank is exhausted, a relatively large amount of hot water can be used in the hot water supply to the hot water tank without conscious of the hot water in the hot water tank. The boiling time can be shortened.

Incidentally, in this type of hot water supply system, it is economically advantageous to use hot water of a storage tank as much as possible and to reduce the number of times of operation of the hot water heater. Therefore, in the case of supplying the hot water to the bath using a relatively large amount of hot water, it is necessary to complete the boiling water of the hot water before the hot water is supplied.

Therefore, a hot water supply system is known which accumulates the time at which the hot water supply is performed, and completes boiling of the hot water of the storage tank before the hot water supply time based on the accumulated data (see Patent Document 2).

When the boiling water of the storage tank is completed before boiling water is supplied to the bathtub, for example, when the temperature of the storage tank is excessively high with respect to the water supply preset temperature set by the user, The heat storage of the heat exchanger becomes useless.

In order to reduce the waste of energy used when the boiling tank is boiled, there has been proposed a hot water supply system in which a plurality of time zones are set during a day and a boiling temperature corresponding to each of a plurality of time zones is set 3).

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-41570 Patent Document 2: JP-A-2005-172325 Patent Document 3: JP-A-2012-112594

However, when boiled water having a temperature corresponding to each of a plurality of time zones is stored in the boiling tank, if the required amount of boiled water is stored in the boiling tank, the energy used for boiling water remaining in the boiling tank becomes ineffective.

In view of the above, it is an object of the present invention to provide a hot water supply apparatus capable of reducing energy consumption by suppressing the waste heat storage of hot water in hot water by considering the hot water used in each time zone, .

The present invention relates to a storage tank, a heating means for a tank for boiling hot water stored in the storage tank, a discharge pipe for discharging hot water from the storage tank, and a water supply pipe for supplying water to each of the storage tank and the discharge pipe. A hot water tank detecting means for detecting an amount of hot water stored in the storage tank; a combustion hot water heater provided in the hot water tank for heating hot water flowing through the hot water tank by combustion of the burner; A time zone setting means for setting a plurality of time zones by dividing the day into a plurality of time zones corresponding to the life pattern of the user regarding the hot water supply; And boiling temperature setting means for setting the boiling temperature by the heating means for the tank at each time zone, A boiling water amount setting means for setting the amount of boiling water by means of the boiling temperature setting means and a boiling water temperature setting means for setting the boiling water temperature by the boiling temperature setting means in accordance with the current time indicated by the clock means when the amount of water detected by the low water amount detection means becomes less than a predetermined amount Tank boiling control means for performing boiling of the storage tank water by the heating means for the tank until the boiling temperature set by the storage tank is set to the target temperature and the boiling water amount set by the non-boiling water quantity setting means is reached .

According to the present invention, by providing the tank boiling control means, in each time zone set by the time zone setting means, the boiling temperature set by the boiling temperature setting means is set as the target temperature, The boiling operation by the heating means for the tank is performed until the boiling water amount becomes the set boiling water amount. This makes it possible to store the necessary amount of hot water before the time when the hot water is used by the user in the storage tank and to prevent the extra hot water from being stored in the storage tank. And the consumption of unnecessary energy can be suppressed.

In the present invention, it is preferable that the non-hot water quantity setting means sets the non-hot water quantity for each time zone on the basis of the past hot water quantity detected by the hot water quantity detecting means for each time zone . This makes it possible to carry out the boiling operation of the storage tank which is matched with the actual quantity of the used hot water by the user, and the wasteful boiling operation can be reliably prevented more reliably.

1 is a configuration diagram of a hot water supply apparatus in an embodiment of the present invention.
2 is an explanatory diagram showing a predetermined time and a preceding boiling time zone set by the time zone setting means;
3 is a flowchart showing the setting operation and control of the boiling temperature in the hot water supply apparatus of the present embodiment.
4 is a flowchart showing the setting operation and the control of the amount of non-hot water in the hot water supply apparatus of the present embodiment.

One embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, the hot water supply apparatus of the present embodiment comprises a tank unit 1, a heat pump unit 2, and an instantaneous heating type combustion water heater 3.

The tank unit 1 is provided with a storage tank 4 and a tank controller 5. A first low temperature sensor 6a for detecting the temperature of hot water in the uppermost layer of the storage tank 4 is provided in the storage tank 4. A second low temperature sensor 6b for detecting the temperature of the hot water in the height direction middle portion of the storage tank 4 (equivalent to 1/2 of the capacity of the storage tank 4) is provided outside the side wall of the storage tank 4, And a third low temperature sensor 6c for detecting the temperature of the lowest temperature water in the height direction of the storage tank 4 are mounted.

The lower end of the storage tank 4 is connected to the end of a water supply pipe 7 for supplying water to the storage tank 4. The water supply pipe 7 extends to the outside of the tank unit 1, and a water pipe (not shown) of the water supply is connected to the start end thereof as a water supply source.

The upper end of the holding tank 4 is connected to the starting end of a discharge pipe 8 for discharging hot water from the holding tank 4. The outlet pipe 8 extends to the outside of the tank unit 1 and is connected to a water outlet (not shown) such as water or a shower. A water supply temperature sensor 9 is provided in the water supply pipe 7.

The water supply pipe 7 is provided with a branch water path 7a branched from the upstream side of the connection end to the storage tank 4 and connected to the downstream of the tap water flow sensor 10 of the tap water pipe 8. [

A tap water flow sensor (10) for detecting the tap water flow from the storage tank (4) is provided in the tap water pipe (8). A water flow sensor 13 for detecting the flow rate of water toward the outlet pipe 8 is provided in the branch water feed passage 7a.

A mixed variable valve 14 is provided at the confluence point of the hot water and the water to which the branched water path 7a is connected in the hot water tank 8 to change the mixing ratio of water from the hot water tank 4 and water from the water pipe 7 . A mixing temperature sensor 15 is provided downstream of the mixing variable valve 14.

Downstream of the mixing temperature sensor 15 is connected a forward pipe 8a for sending the hot water from the hot water pipe 8 to the hot water heater 3 and a return pipe 8b for receiving the hot water through the hot water heater 3 And a tapping bypass pipe 16 is provided between the return pipe 8a and the return pipe 8b.

A bypass valve 17 for opening and closing the tapping bypass pipe 16 is provided in the tapping bypass pipe 16 and a bypass valve 17 for opening and closing the tapping pipe 16 is provided downstream of the connection point between the tapping bypass pipe 16 and the return pipe 8b. (8) is provided with a hot water outlet temperature sensor (18).

The outside air temperature sensor 11 is mounted at a position in contact with the outside air of the tank unit 1.

The tank controller 5 is provided with a first low temperature sensor 6a, a second low temperature sensor 6b, a third low temperature sensor 6c, a water supply temperature sensor 9, an outside air temperature sensor 11, (15), and the hot water outlet temperature sensor (18). Further, a detection signal of the water flow rate by the water flow sensor 10 and the water flow sensor 13 is input.

The tank controller 5 outputs a control signal and controls the operation of the mixing variable valve 14 and the bypass valve 17. [ In addition, the tank controller 5 has a function as a used water amount detecting means for detecting the amount of the used water through the outflow pipe 8. The used water amount detecting means obtains the flow rate of the hot water 8 on the downstream side of the mixed variable valve 14 from the detected water amount of the hot water flow rate sensor 10 and the water flow rate sensor 13 to obtain the used hot water amount.

The tank controller 5 is connected to a remote controller 19 installed in the room. Although not shown in the figure, the remote controller 19 is connected to the desired hot water temperature (the temperature of the hot water supplied from the outlet of the hot water tank 8) and the desired hot water supply temperature (via the hot water supply pipe 35 described later) (Corresponding to the hot water temperature setting means and the hot water supply temperature setting means) for setting the temperature of the hot water supplied to the bathtub, A mode switching switch for switching the mode of supplying the hot water from the outlet of the hot water supply pipe 35 to the hot water supply mode have.

The tap water pipe 8 is connected to the upper portion of the storage tank 4 and the water supply pipe 7 is connected to the lower portion of the storage tank 4 . Water is supplied from the water supply pipe 7 to the lower portion of the storage tank 4 correspondingly to the water from the storage tank 8. Then, in the interior of the storage tank 4, a hot water layer is formed in the upper portion and a water layer is formed in the lower portion. As the tap water is discharged from the storage tank 4, the upper portion of the hot water flowing out of the storage tank 4 is reduced, and water is gradually displaced upward from the lower portion of the storage tank 4. Then, when the upper layer portion of the storage tank 4 becomes a water layer, the hot water is exhausted.

The temperature of the hot water in the holding tank 4 is detected by the first low temperature sensor 6a, the second low temperature sensor 6b and the third low temperature sensor 6c. Since the respective temperature detecting sensors 6a, 6b and 6c have different temperature detecting positions, it is possible to grasp the amount of hot water stored in the storing tank 4 based on the detected temperatures of the respective storing temperature sensors 6a, 6b and 6c . Accordingly, the first low-temperature-temperature sensor 6a, the second low-temperature-temperature sensor 6b and the third low-temperature-temperature sensor 6c constitute the low-volume detection means of the present invention.

In the present embodiment, a storage tank 4 having a total capacity of 100 liters is employed. When the detected temperature of the third low temperature sensor 6c exceeds the predetermined initial boiling temperature, the tank controller 5 determines that 100 liters of hot water is stored in the storage tank 4 and the second low temperature sensor 6b judge that 50 liters of hot water is stored in the holding tank 4 when the detected temperature by the heating means 6a and 6b exceeds the boiling start temperature. The tank controller 5 determines that the storage tank 4 is in a state of being in the hot water when the detected temperature of the first low temperature sensor 6a is equal to or lower than the above-described start temperature of boiling.

The heat pump unit 2 includes a heat pump 20 and a heat pump controller 21. The heat pump 20 corresponds to the heating means for the tank of the present invention and is constituted by connecting the compressor 22, the condenser 23, the pressure reducer 24 and the evaporator 25 with the refrigerant circulation path 26 .

The condenser 23 is connected to the tank circulation path 27 connected to the upper and lower portions of the storage tank 4. A part of the tank circulation path 27 is disposed on the side of the tank unit 1 and the other part is disposed on the side of the heat pump unit 2. The tank circulation path 27 is provided between the tank unit 1 and the heat pump unit 2 Respectively. The water in the tank circulation path 27 communicating with the storage tank 4 is heated by heat exchange with the refrigerant in the refrigerant circulation path 26 through the condenser 23 of the heat pump 20.

A circulation pump 28 for circulating hot water in the storage tank 4 into the tank circulation path 27 is provided in the tank circulation path 27 on the heat pump unit 2 side. The tank circulation path 27 is provided with a circulation upstream temperature sensor 29a for detecting the temperature of water entering the condenser 23 in the storage tank 4 and a circulation downstream temperature sensor 29a for detecting the temperature of the hot water heated in the condenser 23, A sensor 29b is provided.

The combustion hot water supply device 3 includes a warming pipe circuit 8 connected to the return pipe 8a extending from the hot water pipe 8 of the tank unit 1 and a return pipe circuit 8b connected to the return pipe 8b, (32).

The hot water heater circuit 30 includes a heat exchanger 33 which is heated by the gas burner 31 and a hot water bypass pipe 34 which communicates with the upstream side and the downstream side of the heat exchanger 33 in the hot water heater circuit 30 And a hot water supply pipe 35 branched from the hot water heater circuit 30 and connected to a bathtub (not shown).

A quantity servo 36 for controlling the flow rate of the hot water supplied from the forward pipe 8a and a flow rate sensor 38 for detecting the flow rate of the hot water passing through the quantity sensor 36 are provided on the upstream side of the heat exchanger 33 in the hot- A bypass servo 38 for changing the flow rate of the hot water supplied to the heat exchanger 33 and the flow rate of the hot water supplied to the hot water bypass pipe 34 is provided .

On the downstream side of the hot water supply bypass pipe 34, a hot water heater temperature sensor 39 for detecting the temperature of hot water directed to the return pipe 8b or the hot water supply pipe 35 is provided. The hot water supply pipe 35 is provided with a hot water supply valve 40 for opening and closing the hot water supply pipe 35 and a hot water supply flow rate sensor 41 for detecting the hot water flow rate of the hot water supply pipe 35.

The hot water heater controller 32 is supplied with a temperature detection signal by the hot water heater temperature sensor 39, a detection signal of the water flow rate by the hot water heater flow sensor 37 and a detection signal of the water flow rate by the hot water supply flow rate sensor 41 do. The operation of the bypass servo 38, the quantity servo 36, the gas burner 31, and the water supply valve 40 are controlled by a control signal output from the hot water heater controller 32.

The tank controller 5 and the heat pump controller 21 are communicably connected to each other and likewise the tank controller 5 and the hot water heater controller 32 are communicably connected to each other so that the heat pump controller 21 and the hot- The controller 32 operates in cooperation with the tank controller 5.

When the heat pump controller 21 receives a signal instructing permission of the boiling operation from the tank controller 5, the boiling operation is performed, and receives from the tank controller 5 a signal instructing prohibition of the boiling operation The boiling is not performed.

The heat pump controller 21 functionally includes tank boiling control means for controlling the heat pump 20 when boiling water in the storage tank 4 is performed.

The tank controller 5 functionally includes boiling temperature setting means for setting boiling temperature. The set temperature by the boiling temperature setting means is used for aiming at when the tank boiling control means of the heat pump controller 21 performs the boiling water of the storage tank 4 by the heat pump 20.

The tank controller 5 functionally includes an unflowed water quantity setting means for setting the quantity of unfilled water {the amount of hot water stored in the hot water storage tank 4}. The amount of hot water set by the non-hot water quantity setting means is used as a condition for stopping the boiling after the boiling water control means starts boiling hot water in the hot water tank 4 by the heat pump 20. In the present embodiment, in the present embodiment, the non-heated water quantity setting means of the tank controller 5 is configured to boil 100 liters of hot water (store 100 liters of hot water in the lowering tank 4) (Whether 50 liters of hot water should be stored in the holding tank 4) is set. When the non-boiling water quantity setting means sets the non-boiling water quantity to 100 liters, the tank controller 5 controls the tank controller 5 when the detected temperature by the third low temperature sensor 6c becomes the predetermined temperature or more, A signal for instructing the stop of the boiling operation is transmitted. In the case where the amount of the unstilled water is set to 50 liters, the tank controller 5 controls the tank controller 5 when the detected temperature by the second low temperature sensor 6b becomes equal to or higher than the predetermined temperature, A signal for instructing the stop of the boiling operation is transmitted.

Although not shown, the tank controller 5 includes a clock section (clock means) for outputting the current time, a time zone setting means for setting a plurality of time zones by dividing the day into a plurality of times corresponding to the life pattern of the user Functionally. The tank controller 5 is a living pattern of the user. In the past plural days (seven days in the past) in the past, the tank controller 5 calculates the actual hot water supply start time at which hot water supply operation is first started for each day, The actual hot water supply start time and the actual hot water supply end time at the end of the last hot water supply operation are stored in the storage means not shown and the hot water supply temperature set by the remote controller 19, And stores the amount of water used for each time in the storage means.

The time zone setting means is configured to set the hot water supply start scheduled time (A) at which the hot water supply operation is firstly started in the day, and the hot water supply start time (A) (B) for starting the supply of the hot water to the bathtub and the hot water supply end scheduled time (C) for ending the last hot water supply operation in the day are set.

As shown in Fig. 2, the time zone setting means sets the time zone setting means to set the water temperature of the hot water in the storage tank (4) in correspondence to the scheduled hot water supply start time based on the hot water quantity stored in the memory means (? -B) that precedes the start of boiling of the hot water in the storage tank (4) in correspondence to the scheduled start time of the hot water supply start and the hot water supply start pre boiling time , And sets the boiling stop leading time period? -C that precedes boiling stop of the hot water in the holding tank 4 in response to the scheduled hot water supply end time. Α is the start time of the hot water supply start boiling time zone, β is the start time of the hot water supply start boiling time zone, and γ is the start time of the boiling stop leading time zone.

The time zone setting means is for the tank controller 5 to send the boiling permit signal to the heat pump controller 21 from the start time (?) Of the hot water boiling time preceding boiling time zone to the start time (?) Of the boiling stop leading time zone And sets the rest as the boiling prohibition time zone in which the boiling operation of the heat pump controller 21 is prohibited.

The total amount of the storage tank 4 and the capacity of the heat pump 20 can be set to be equal to or less than the total capacity of the storage tank 4 and the boiling stop time t- (Corresponding to the temperature of the tap water) of the water supply temperature sensor 9 and the detection temperature (corresponding to the season or region specific temperature) of the outdoor air temperature sensor 11, It is also possible to correct it. Therefore, by providing the tank controller 5 with the correcting means for performing such correction, it is possible to prevent the water-heating start preceding boiling time period (? -A), the water supply start pre-boiling time period (? (? -c) can be accurately set.

In the water boiling start pre-boiling time period (α-A), the water supply start pre boiling time period (β-B) and the boiling stop leading time period (γ-c) The actual amount of used hot water may be different on that day. The tank controller 5 monitors the temperature of the hot water in the storage tank 4 detected by the first low temperature sensor 6a, the second low temperature sensor 6b and the third low temperature sensor 6c And when the boiling water amount set by the non-boiling water quantity setting means is reached, a signal for instructing boiling stop is sent to the heat pump controller 21 at that time. Accordingly, it is possible to prevent waste heat by boiling water over a necessary amount.

Further, since the heat pump 20 has a very high energy efficiency, but has a low heating capacity per unit time, a relatively long time is required to boil a large amount of hot water. If this is the case, the waiting time until boiling water in the storage tank 4 boils to the user occurs, which is not preferable. Therefore, when boiling of a large amount of hot water is required (for example, when the maximum capacity of the storage tank 4 is exceeded), the minimum amount of hot water is stored in the storage tank 4, and when the hot water is exhausted, And is switched to hot water supply from the combustion hot water supply device (3). Thus, the user can obtain a sufficient amount of water without being influenced by the consumption of the hot water in the storage tank 4.

In the boiling allowance time period (? -?), When the boil-off water in the boil- ing tank 4 is exhausted and the boil water amount is lower than the required boil water amount, the tank controller 5 instructs the heat pump controller 21 to perform the boil- .

The boiling temperature setting means sets the boiling temperature corresponding to the hot water supply set temperature and the hot water supply set temperature by the remote controller 19 and transmits the boiling set temperature information to the heat pump controller 21. [

The tank boiling control means of the heat pump controller 21 operates the heat pump 20 so that the detected temperature of the circulating downstream temperature sensor 29b becomes the boiling temperature when the boiling set temperature information is received from the tank controller 5 The boiling water boiling operation of the holding tank 4 is performed. When the boil stop signal is received from the tank controller 5, the boiling operation of the hot water in the storage tank 4 is stopped.

The tank controller 5 controls the mixing variable valve 14 so that the detected temperature of the mixed temperature sensor 15 or the hot water outlet temperature sensor 18 becomes the target temperature when the hot water supply is started in the state where the hot water is not exhausted. The control of the mixing temperature is performed to control the opening degree of the water-side and water-side. At this time, the tank controller 5 opens the bypass valve 17 in the normal hot water supply mode and closes the bypass valve 17 in the hot water supply mode.

On the other hand, when the hot water supply is started in the state where the hot water is exhausted, the tank controller 5 closes the hot water side of the mixed variable valve 14 and closes the bypass valve 17. Thus, water from the water supply pipe 7 flows toward the combustion water heater 3 through the forward pipe 8a. In this case, the heating temperature adjustment control by the hot water heater controller 32, which will be described later, is carried out in the combustion hot water heater 3.

In the meantime, in the boiling allowance time zone, the boiling permit signal for the heat pump controller 21 is already sent from the tank controller 5, so that the boiling tank 4 is boiled.

The hot water heater controller 32 is connected to the tank controller 5 so as to be able to communicate with the hot water heater controller 32. When the heater controller 32 receives a signal for permitting heating from the tank controller 5, The hot water heater controller 32 that has been heated permits the hot water heater 32 to ignite the gas burner 31 when the water flow rate of the predetermined lower limit flow rate is detected by the hot water heater flow rate sensor 37 to detect the detected hot water temperature of the hot water heater temperature sensor 39 The control of the heating temperature control for controlling the amount of combustion of the gas burner 31 is performed. Further, when the hot water heater controller 32 receives a signal instructing heating inhibition from the tank controller 5, it extinguishes the gas burner 31 and stops the execution of the heating temperature adjustment control. Even if the hot water heater controller 32 receives a signal instructing heating permission from the tank controller 5, if the hot water flow sensor 37 does not detect a water passage having a predetermined lower limit flow rate, ignition of the gas burner 31 And heating temperature adjustment control are not executed.

In addition, the hot water heater controller 32 opens the hot water supply valve 40 when performing the hot water supply operation for supplying a predetermined amount of hot water to the bathtub (not shown) (hot water supply mode) The amount of water supplied to the bath is detected. When the cumulative value of the supply of the hot water to the bath reaches the predetermined amount, the hot water supply valve 40 is closed to terminate the hot water supply operation.

The hot water controller controller 32 sends a hot water supply operation signal indicating the start and end of the hot water supply operation to the tank controller 5. The tank controller 5 controls the heat pump controller 21) of the boil.

The operation of the boiling temperature setting means in the tank controller 5 in the water heater configured as described above will be described.

The tank controller 5 performs the setting of the boiling temperature in the order shown in Fig. 3 by the boiling temperature setting means. That is, in STEP 1, the tank controller 5 determines whether or not the current time indicated by the clock means is within the water supply start pre-boiling time zone (see FIG. 2). The boiling temperature setting means proceeds to STEP 2 when the present time is within the pre-boiling water supply start time.

When proceeding to STEP 2, the boiling temperature setting means refers to the hot water supply set temperature set by the remote controller 19, and when the hot water supply set temperature is lower than 44 캜, the process goes to STEP 3.

The boiling temperature setting means sets the boiling set temperature to 45 deg. C, and the tank controller 5 transmits the boiling set temperature information and the boiling permission signal to the heat pump controller 21, and returns to STEP l Go back.

The heat pump controller 21 that has received the boiling permit signal refers to the temperature information of the hot water in the hot water tank 4 from the tank controller 5 by the tank water temperature control means and controls the temperature of the hot water in the hot water tank 4 The heat pump 20 is operated so that the circulation pump 28 is operated and at the same time the detection temperature of the circulating downstream temperature sensor 29b is set to the boiling set temperature of 45 占 폚, The boiling water boiling operation is executed.

In STEP 2, if the water supply preset temperature is 44 ° C or higher, the flow proceeds to STEP 4. The boiling temperature setting means sets the boiling set temperature to 60 deg. C, and the tank controller 5 transmits the boiling set temperature information and the boiling permission signal to the heat pump controller 21, and returns to STEP l Go back. Then, the heat pump controller 21 that has received the boiling permission signal performs the boiling water boiling operation of the holding tank 4 with the boiling set temperature of 60 deg. C under the control of the tank boiling control means.

Thus, when the current time is within the pre-boiling water supply start time, the tank controller 5 sets the boiling temperature corresponding to the water supply supply set temperature set by the user. As described above, the pre-boiling water supply start time corresponds to the water supply start scheduled time (see FIG. 2) obtained by learning the life pattern of the user, and the water supply time is set before the water storage tank 4 ) Can be completed, and the temperature of the hot water in the storage tank 4 can be set to a temperature corresponding to the hot water supply set temperature. Therefore, the waste heat in the storage tank 4 can be suppressed, and in the water supply operation using a relatively large amount of water, the water in the storage tank 4 can be effectively used.

When the current time is not in the boiling water supply start boiling time zone in STEP l, the flow proceeds to STEP 5. In STEP 5, the tank controller 5 determines whether or not the current time indicated by the clock means is within the boiling allowance time zone (see FIG. 2). The boiling temperature setting means proceeds to STEP 6 when the present time is within the boiling allowable time zone.

In STEP 6, the boiling temperature setting means refers to the hot water setting temperature set by the remote controller 19, and when the hot water setting temperature is lower than 44 캜, the process goes to STEP 7.

In STEP 7, the boiling temperature setting means sets the boiling set temperature to 45 deg. C, and the tank controller 5 transmits the boiling set temperature information and the boiling permission signal to the heat pump controller 21, Go back.

The heat pump controller 21 which has received the boiling permit signal refers to the temperature information of the hot water in the hot water tank 4 from the tank controller 5 by means of the tank water temperature control means, The circulation pump 28 is operated and the heat pump 20 is operated so that the detection temperature of the circulation downstream temperature sensor 29b becomes 45 ° C. which is the boiling set temperature, ) Of boiling water.

On the other hand, when the set temperature of the hot water supply is equal to or higher than 44 DEG C in STEP 6, the flow proceeds to STEP 8. The boiling temperature setting means sets the boiling set temperature to 60 deg. C, and the tank controller 5 transmits the boiling set temperature information to the heat pump controller 21 and returns to STEP l Go back. The heat pump controller 21, which has received the boiling permit signal, performs the boiling water boiling operation of the warming tank 4 with the temperature of 60 ° C as the boiling set temperature under the control of the tank boiling control means.

When the current time is not the boiling allowance time zone in STEP 5, it can be determined that the hot water supply is neither the hot water supply nor the hot water supply operation. Therefore, the tank controller 5 proceeds to STEP 9, Transmits it to the controller 21, and returns to STEP l. Thereby, the operation of the heat pump 20 is stopped in the tank boiling control means, and unnecessary boiling operation in the time zone in which the hot water is not used can be eliminated, thereby wasting energy consumption.

The temperature values used in STEPs 2 to 4 and STEPs 6 to 8 in Fig. 3 are not limited to these values, and a temperature value that is optimal for all of them is selected.

The tank boiling control means of the heat pump controller 21 starts the boiling operation by the booster permission signal of the tank controller 5 as described above. By stopping the boiling according to the conditions and storing the necessary minimum amount of the hot water in the hot water storage tank 4, the waste heat of the hot water stored in the hot water storage tank 4 is surely prevented. The boiling stop condition at that time will be described below.

The boiling stop condition is used for each of the time zones set by the time zone setting means of the tank controller 5, and the hot water quantity set by the non-hot water quantity setting unit is used. That is, the tank controller 5 sends a signal instructing the tank boiling control means of the heat pump controller 21 to stop the boiling operation, in the order shown in Fig. 4, on the basis of the amount of water not set by the non-boiling water amount setting means .

In STEP 10, the tank controller 5 determines whether or not the current time indicated by the clock means is within the water supply start pre-boiling time zone (see FIG. 2). Then, when the present time is within the pre-boiling water supply start time, the program proceeds to step 11 and refers to the result of learning about the quantity of hot water to be used by the time zone setting means, and the amount of water to be not hotter set to 100 liters .

Then, the tank controller 5 proceeds to STEP 12 to transmit the boil-up permission signal to the heat pump controller 21, and proceeds to STEP 13. In addition, the emission of the boiling permit signal in STEP 12 is synchronized with STEP 3 or STEP 4 in Fig.

Proceeding to STEP 13, the tank controller 5 monitors the detection temperature of the third low temperature sensor 6c (see FIG. 1) provided in the low temperature tank 4, because the set flow rate is 100 liters. This monitoring is executed in STEP 14 until the detected temperature of the third low temperature sensor 6c becomes equal to or higher than the boiling temperature set in STEP 3 or STEP 4 in FIG.

When the detected temperature of the third low temperature sensor 6c becomes equal to or higher than the boiling set temperature, 100 liters of hot water is stored in the storage tank 4. Therefore, when the detected temperature of the third low temperature temperature sensor 6c becomes equal to or higher than the boiling set temperature in STEP 14, the tank controller 5 proceeds to STEP 15 to transmit a signal instructing stopping the boiling operation to the heat pump controller 21 And returns to STEP 10.

In STEP 10, if the present time is not the water-supply start pre-boiling time zone, the flow proceeds to STEP 16.

In STEP 16, the tank controller 5 determines whether or not the current time indicated by the clock means is within the boiling allowance time zone (see FIG. 2), and proceeds to STEP 17 when the current time is within the booster allowable time zone.

Proceeding to step 17, the learning result about the quantity of the used hot water by the time zone setting means is referred to, and the non-hot water quantity setting means sets the non-hot water quantity to 50 liters. Then, in STEP 18, the tank controller 5 transmits the boil-up permission signal to the heat pump controller 21. The transmission of the boiling allowance signal in STEP 18 is synchronized with STEP 7 or STEP 8 in Fig.

Then, in step 19, the tank controller 5 monitors the detection temperature of the second low temperature sensor 6b (see FIG. 1) provided in the low temperature tank 4, because the set flow rate is 50 liters. This monitoring is carried out in STEP 20 until the detected temperature of the second low temperature sensor 6b becomes equal to or higher than the boiling temperature set in STEP 7 or STEP 8 in FIG.

When the detected temperature of the second low temperature sensor 6b becomes equal to or higher than the boiling set temperature, more than 50 liters of hot water is stored in the storage tank 4. Therefore, when the detected temperature of the second low temperature temperature sensor 6b is equal to or higher than the boiling point set temperature in STEP 20, the tank controller 5 proceeds to STEP 15 to transmit a signal instructing stopping the boiling operation to the heat pump controller 21 And returns to STEP 10.

When the current time is not the boiling allowance time zone in STEP 16, it can be determined that the hot water supply is neither the hot water supply nor the hot water supply operation. Therefore, the tank controller 5 proceeds to STEP 21, Transmits it to the controller 21, and returns to STEP 10. Thereby, the operation of the heat pump 20 is stopped in the tank boiling control means, and unnecessary boiling operation in the time zone in which the hot water is not used can be eliminated, thereby wasting energy consumption.

4, the tank boiling control means of the heat pump controller 21 sets the boiling temperature set by the boiling temperature setting means to the target temperature in accordance with the instruction of the tank controller 5, The boiling water of the holding tank 4 is boiled by the heat pump 20 until the boiling water amount set by the heat pump 20 is reached.

Therefore, according to the hot water supply apparatus of the present embodiment, not only the data of the hot water temperature for each time zone learned from the user's life pattern but also the data of the hot water amount for each time zone learned from the user's life pattern, It is possible to store the required amount of the hot water at a desired temperature in the storage tank 4. Thus, the boiling operation of the storage tank 4 by the heat pump unit 2 is performed efficiently, so that the hot water supply and the hot water supply that prevent waste energy consumption based on the life pattern of the user can be performed.

In the present embodiment, the tank controller 5 has a function of learning the life pattern of hot water supply by the user. In addition to this, it is also possible to use the hot water supply time, hot water supply set temperature, The time zone setting means may select the time zone by referring to the data.

3: Combustion water heater
4: Storage tank
5: tank controller (clock means, time zone setting means, boiling temperature setting means, non-hot water quantity setting means)
6a: a first low temperature sensor (low flow rate detecting means)
6b: second low temperature sensor (low water level detecting means)
6c: third low temperature sensor (low flow rate detecting means)
7: Water supply
8: Hot water pipe
10: Water flow sensor (used water quantity detection means)
13: Water flow sensor (used water quantity detection means)
20: Heat pump (heating means for tank)
21: Heat pump controller (tank boiling control means).

Claims (2)

A storage tank,
A tank heating means for boiling the boiled water stored in the storage tank,
A hot water tank for discharging hot water from the storage tank,
A water supply pipe for supplying water to each of the storage tank and the outlet pipe,
A water supply temperature sensor for detecting a water temperature of the water supply pipe,
A low-volume detecting means for detecting an amount of hot water stored in the storage tank,
A combustion water heater provided in the outlet pipe for heating hot water flowing through the outlet pipe by burning the burner,
A used hot water quantity detecting means for detecting an amount of hot water used through the hot water extracting pipe,
Clock means for indicating the current time,
An outside air temperature sensor for detecting the outside air temperature,
Time zone setting means for setting a plurality of time zones by dividing a day into a plurality of times in correspondence with a life pattern of a user regarding hot water supply,
Correction means for correcting the length of each time zone set by the time zone setting means corresponding to one or both of the detected temperature of the water supply temperature sensor and the detected temperature of the outside air temperature sensor,
Boiling temperature setting means for setting a boiling temperature by the heating means for the tank,
An amount of non-equalizing water amount setting means for setting the amount of non-equalizing hot water, which is the amount of hot water stored in the equalizing tank by boiling of the heating means for the tank,
Until the amount of the detected water by the low water amount detecting means becomes less than a predetermined amount and until the water amount becomes the untouched water amount set by the non-hot water quantity setting means corresponding to the current time indicated by the clock means, And tank boiling control means for performing boiling of the hot water in the storage tank by the heating means for the tank with the boiling temperature set by the temperature setting means as the target temperature. The method according to claim 1,
Wherein the non-hot water quantity setting means sets the non-hot water quantity for each time zone based on the past hot water quantity detected by the hot water quantity detection means for each of the time zones.

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