JP3483722B2 - Test run method and test run device for hot water heating system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses high-temperature hot water heated by a burner of a gas water heater as primary hot water in a hot-air heater, and the hot primary water supplied to the burner from the hot-air heater is high-temperature hot water. The present invention relates to a method and a device for performing a trial run of a hot water type heating device in which a required amount of secondary water is mixed to produce a slightly low temperature secondary hot water and the secondary hot water is used for floor heating.

[0002]

2. Description of the Related Art A hot-water type heating device provided with a warm-air heater for sending warm air into a room and a warm-water mat that acts as a floor heater is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-270961. . In this type of device, high temperature hot water heated to about 80 ° C by a burner is introduced as a primary hot water to a warm air heater, and an appropriate amount of high temperature primary hot water is added to the warm water that exits the warm air heater and returns to the burner. The temperature of the secondary warm water is adjusted to about 60 ° C., the secondary warm water is diverted to the warm water mat, and then the primary warm water is returned to the burner together with the hot water.

The operating conditions for supplying hot water to the hot water mat during normal operation are usually after the warm air heater has started the heating operation, and the temperature of the primary hot water is above a predetermined temperature. In addition to this, it takes time for heat to be transferred to the floor surface, so the rise of floor heating is delayed. Therefore, when a new hot water heater is installed or repaired,
Even if a trial run is performed to check whether or not there is a flaw in the construction, it takes a long time before it can be seen that the secondary hot water has turned to the hot water mat and is heating, which is extremely inefficient.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to make a trial run in a short time.

[0005]

[Means for Solving the Problems] Among the means for solving the above problems, the first means is, as described in claim 1 , a hot air heater which uses high-temperature hot water heated by a hot water device as primary hot water. To circulate through the outward and return paths, by adjusting the secondary hot water of a slightly lower temperature by bypassing the primary hot water of the outgoing path in the warm water of the return path, and circulating the secondary hot water to the floor heater, The floor heating is longer than the warm-air heating when the heating action takes a longer time.The hot-water heating system simultaneously operates the hot-air heating system and the floor-heating system. After opening the secondary hot water passage, the opening timing of the valve that opens and closes the secondary hot water passage is forcibly advanced from the opening timing of normal operation to increase the temperature of the floor heater during trial operation. Early detection of the start of heating effect A commissioning process of the hot water type heating apparatus, characterized by the ability.

[0006] The second means is as described in claim 2, is circulated through the forward path and backward path to the warm air heater the hot water of the hot heated with hot water device as the primary hot water forward in the returning path hot water The secondary hot water of a slightly lower temperature is adjusted by bypassing the primary hot water of the above, and the secondary hot water is circulated to the floor heater. in those open the expression heating hot air heater and a floor heating device simultaneously driving the apparatus, and the normal on-off valve of the secondary hot water passage after a predetermined time has elapsed from the starting of the warm air heater at the start of the operation, the secondary hot water A trial operation device for a hot water heating device, characterized in that the valve for opening and closing the passage is provided with a forced valve opening means for trial operation that opens and closes earlier than the valve opening time during normal operation.

According to the means of claims 1 and 2, the secondary hot water can be circulated from an early stage during the trial run to accelerate the rise of the floor heating action.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a gas water heater,
The warm water heated to about 80 ° C. by the burner is used as the primary warm water, and the warm air heater, that is, the air conditioner A is fed from the outward path f1.
To the gas water heater 1 from the return path b1 and the hot water whose temperature has dropped due to heat exchange by the air conditioner A is returned to the
The temperature is increased to about 60 ° C. to obtain secondary hot water, and the two hot water mats F are passed through the outward path f2, the separator S, and the outward paths f3 and f4.
a, Fb, and the water passing therethrough is merged with the return path b1.

In the figure, B is a bathtub that can be reheated, and hot water is supplied to the bathtub B from a separate water heater. When the hot water has cooled, the cold water is supplied from the return path b2 to the gas water heater 1 The liquid is introduced into a heat exchanger provided therein, heat-exchanges between the high-temperature primary hot water and the liquid-liquid, receives a reheating effect, and is supplied to the bath B from the outward path f5.

Incidentally, D is a room temperature sensor for detecting the room temperature in which the hot water mats Fa and Fb are provided.

Referring to FIG. 2, a heat exchanger 11 having a burner 10 as a heat source is provided in the gas water heater 1, and hot water circulated by the pump 2 is passed by the burner 10 via the heat exchanger 11. Is heated to be primary hot water and supplied from the conduit 12 to the outward path f1. Condensed water that has returned via the return path b1 once enters the cistern 3 and then the pump 2
Is sucked into. By the way, the condensate discharged from the pump 2 returns to the heat exchanger 11 through the pipe line 13,
Part of the condensate is diverted to the pipeline 14 as secondary warm water and the outward route f
It reaches the separator S through 2. The temperature of the primary hot water is detected by the temperature sensor 5H provided in the pipeline 12, the temperature of the secondary hot water is detected by the temperature sensor 5L provided in the pipeline 14, and the detection signals of both temperature sensors 5H and 5L are detected. Is sent to the control device 6 by the electric wires L1 and L2.

Thermal separators Va and Vb are provided in the separator S corresponding to the outward paths f3 and f4.
By the control signal from the controller 6 provided in the gas water heater 1, the inlets of the outward paths f3 and f4 can be individually opened and closed to interrupt the supply of the secondary hot water to the hot water mats Fa and Fb. The on-off valves Va and Vb are provided with wax pellets and a heater for heating the wax pellets inside, and the wax enclosed in the wax pellets by a slidable piston is heated by the heater and expanded to slide the pistons. Then, the rod of wax pellets integrated with the piston pushes the valve rod to open the valve. The current for heating the heater is controlled by the control device 6 via the circuits L3 and L4. The on-off valves Va and Vb are controlled so as to be opened after a certain period of time has passed since the operation of the air conditioner A was started during normal operation.
During a test operation in which it is desired to open the valves a and Vb rapidly, the setting of the control device is changed so that the current value for heating the heater is increased and the valve opening timing is advanced. Further, the reflux water coming out from the warm water mats Fa and Fb returns to the cistern 3 through the return path b1.

By the way, the forward path f1 and the return path b1 are connected by a bypass BP, and the proportional control valve V in the air conditioner A is closed to stop the operation of the air conditioner A to operate the floor heating independently. In this case, the primary hot water directly flows to the cistern 3 through the bypass BP, and a part of the primary hot water is passed as the secondary hot water to the hot water mats Fa and Fb so that the floor heating can be independently operated. The amount of heat released from the air conditioner A during normal operation is, for example, 3,000 to 900 kcal / h, and the amount of heat released from the hot water mats Fa and Fb is 1.
It is 000 kcal / h.

The cistern 3 is provided with an electrode 31 for detecting a high water level and an electrode 32 for detecting a low water level. When the water level of the cistern becomes small and the water surface moves away from the lower end of the electrode 32, the electrode 31 Tap water is supplied through the water supply pipe 33 until the water surface comes into contact with the tip of 31, and even if the water surface in the cistern 3 exceeds the lower end position of the electrode 31 and overflows, excess water flows through the drain pipe 34 or Hot water is discharged.

Further, as a reheating means for the bath B, it is arranged so as to branch a part of the primary hot water to the liquid-liquid type heat exchanger 4 from the middle of the pipe 12, and the heat exchanger 4
A thermal type on-off valve Vc is provided at the inlet of the primary hot water. The on-off valve Vc is opened by receiving a control signal from the control device only when reheating the hot water in the bathtub B.
The hot water in the bathtub B is circulated to the heat exchanger 4 by the pump 40. However, when performing hot water filling or adding hot water, hot water is separately supplied from a hot water supply device (not shown) through the pipe line 41 to generate heat. It is supplied into the bathtub B through the exchanger 4, the outward path f5 and the return path b2.
Reference numeral 42 is a normally-closed on-off valve, which is opened when hot water is supplied into the bathtub B through the conduit 41, and the hot water that has passed through the on-off valve 42 passes through the check valve 43 and the flow meter 44. It is supplied through the bathtub B. Further, reference numeral 45 is a water flow switch, and the hot water from the return path b2 due to the operation of the pump 40 is actually the heat exchanger 4
Is detected and the pump 40 is operated only when there is hot water in the bath B to prevent damage and noise caused by the idle operation of the pump 40.

With the above structure, the strong heating and hot water mat Fa in the warm air heating operation by the air conditioner A, such as in winter,
When performing floor heating with Fb at the same time, heat exchanger 1
In order to prevent boiling in 1 and secure hot air temperature by strong heating, the combustion amount of the burner 10 is controlled based on the detection signal from the temperature sensor 5H so that the temperature of the primary hot water becomes, for example, 80 ° C. The warm air temperature of the air conditioner A is maintained at a predetermined temperature during strong heating. The room temperature of the room in which the warm water mats Fa and Fb are installed is detected by the room temperature sensor D, and when the room temperature rises to a predetermined temperature that is arbitrarily set, it is felt that the temperature at the feet is high.
It is necessary to reduce the circulation amount of the secondary hot water of a and Fb to reduce the heating amount by floor heating. For that purpose, the on-off valve Va,
The energization current value to Vb is made smaller than the current value to completely close the on-off valves Va and Vb, and the opening degree is reduced without completely closing the on-off valves Va and Vb to secondary to the hot water mats Fa and Fb. The circulating amount of hot water should be reduced. However, when the on-off valves Va and Vb are of the thermal type as in the above-described embodiment, it is difficult to control the opening accurately like a solenoid proportional valve, so that the secondary hot water per unit time is opened and closed periodically. The circulation amount may be controlled so as to decrease.

Next, in the case of weak heating such as dehumidifying operation, the cooling function of the air conditioner A and the warm air heating function (weak heating) are simultaneously activated to temporarily cool the room air and After the moisture is condensed and removed, it is warmed with primary warm water and blown into the room as dry air. When floor heating is performed simultaneously, the secondary hot water is circulated through the hot water mats Fa and Fb as described above. When the floor heating is also used at the time of the weak heating as described above, based on the temperature of the secondary hot water detected by the temperature sensor 5L, the combustion amount of the burner 10 is set so that the temperature of the secondary hot water becomes, for example, 60 ° C. Control so that the effect of floor heating is fully exerted. In addition, if the secondary hot water temperature is controlled to be 60 ° C. in this way, the primary hot water temperature is close to 80 ° C. which is the temperature during strong heating,
The opening of the proportional control valve in the air conditioner A is automatically narrowed, and the circulation amount of the primary hot water is reduced to be suitable for weak heating. Then, the amount of primary hot water flowing to the cistern 3 through the bypass BP increases and the temperature of the secondary hot water tries to rise, but the combustion amount of the burner is reduced and stable in a state where weak heating and floor heating are performed.

Further, when the room temperature detected by the room temperature sensor D reaches a predetermined temperature, the user feels that the temperature at the feet is high, so that it becomes necessary to reduce the heating amount by the floor heating.
Therefore, as in the case where the strong heating and the floor heating are simultaneously performed, the opening degree of the opening / closing valves Va and Vb is reduced or the opening / closing valve V is changed.
Open and close a and Vb periodically. By the way, when performing the weak heating and the floor heating at the same time, since the combustion amount of the burner 10 is controlled based on the temperature of the secondary hot water detected by the temperature sensor 5L, the secondary hot water is always circulated. desirable. Therefore, the room temperature becomes equal to or higher than the predetermined temperature, and the on-off valves Va, Vb
When the valve is opened and closed periodically, it is desirable to shift the opening and closing cycles of the opening and closing valves Va and Vb so that at least one of the opening and closing valves Va and Vb is always opened. In addition, when both the open / close valves Va and Vb are closed at the same time or when only one hot water mat is provided, a period during which the secondary hot water is not circulated occurs in the open / close cycle. In that case, the combustion amount of the burner 10 is temporarily controlled based on the temperature of the primary hot water detected by the temperature sensor 5H until the circulation of the secondary hot water is restarted, and at least one of the on-off valves Va and Vb is opened. Then, when the circulation of the secondary hot water is restarted, the combustion amount of the burner 10 may be controlled again based on the temperature of the secondary hot water detected by the temperature sensor 5L.

When this equipment is newly installed, added or repaired, it is necessary to carry out a trial run, but hot water mats Fa, Fb
Since the heating action of is slow to start up, it takes a long time to perform a trial operation in the normal operation mode.

In order to remedy this inconvenience, in the present invention, a trial operation mode is incorporated in the control device 6 of the heating device to cause the warming air heater to perform the heating action and to cause the floor heater to perform the heating action at an early stage. By doing so, the trial operation of the entire heating system can be performed efficiently.

The means is to set the temperature of the primary hot water to the temperature of the normal operation and to advance the timing of flowing the secondary hot water to the hot water mats Fa and Fb earlier than the normal operation mode. In this case, the trial operation mode is as described above. Secondary hot water on-off valve Va,
The current value applied to the heater for opening the Vb valve is increased to control ON / OFF of the valve opening to increase the amount of heat supplied.

In FIG. 3 , the on / off valves Va and Vb provided in the passage of the secondary hot water supplied to the hot water mats Fa and Fb are turned on / of.
And hot water mat Fa, and Fb and temperature control F, shows the flow of cases which is adapted to force open the on-off valve during commissioning hasten heating, and a control device to commissioning mode, stearyl
If the trial operation mode is detected in step S1 , step S2
Then, the on-off valve is forcibly opened, and the temperature of the hot water mat rises early.

[0023]

As is apparent from the above description , the claims
According to the means of 1 and 2, the amount of heat applied to the primary hot water may be constant, so that even if the amount of heat of the water heater is small, it is possible to accelerate the rise of the heating action of the floor heating and improve the work efficiency of the trial operation.

[Brief description of drawings]

FIG. 1 is a diagram showing a connection state between a water heater and peripheral devices.

FIG. 2 is a diagram showing a pipe state in the water heater.

[Fig. 3] Flow chart of trial operation mode for supplying hot water to the hot water mat early

[Explanation of symbols]

1 gas water heater 2 pumps 3 cistern 4 (Liquid-Liquid) Heat Exchanger 5H (primary hot water side) temperature sensor 5L (secondary hot water side) temperature sensor 6 control device A air conditioner B bathtub D Room temperature sensor Fa, Fb hot water mat (floor heater) S separator Va, Vb open / close valve

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24D 3/00 F24D 3/10

Claims (2)

(57) [Claims] 1. A high-temperature hot water heated by a hot water device is circulated as a primary hot water to a warm air heater through an outward path and a return path,
By bypassing the primary hot water of the outward route in the hot water of the return route to adjust the secondary hot water of a slightly lower temperature and circulating the secondary hot water to the floor heater, the rising time of the heating action is a warm air heater. The floor heater is a longer hot water heater, and the hot air heater and the floor heater are operated at the same time, and the opening / closing valve of the secondary hot water passage is opened after a certain time has elapsed from the start of the warm air heater at the start of normal operation. In the open type, during the trial operation, the opening timing of the valve that opens and closes the passage of the secondary hot water is forced to be earlier than the opening timing of the normal operation to speed up the temperature rise of the floor heater and accelerate the rise of its heating action. A method for commissioning a hot water heating system characterized by enabling detection. 2. High-temperature hot water heated by a hot water device is circulated as a primary hot water to a warm air heater through a forward path and a return path,
By bypassing the primary hot water of the outward route in the hot water of the return route to adjust the secondary hot water of a slightly lower temperature and circulating the secondary hot water to the floor heater, the rising time of the heating action is a warm air heater. The floor heater is a longer hot water heater , and the hot air heater and the floor heater are operated at the same time, and the opening / closing valve of the secondary hot water passage is opened after a certain time has elapsed from the start of the warm air heater at the start of normal operation. In the open type, the valve for opening and closing the passage of the secondary hot water is provided with a forced valve opening means for trial operation that opens and closes earlier than the valve opening time during normal operation. .