JPH0781719B2 - Air conditioner heating water heater - Google Patents

Description

Description: FIELD OF APPLICATION The present invention relates to an air conditioner heating / water heater, and more particularly to a so-called air conditioner (hereinafter referred to as “air conditioner”) and a water heater, which relates to a circuit on the water heater side when heating the air conditioner. It is intended to effectively use the heat source.

[Prior Art and Problems Thereof] Recently, an air conditioner has a cooling function and a heating function, and employs a so-called heat pump-based heat medium heat exchange system.

And the heat source device of this apparatus is installed outdoors as an outdoor unit. Recently, it has been proposed to utilize the heating function to heat the inside of the bath by exchanging heat from a heat medium.

With this conventional device, in addition to air conditioning and heating in the home, it is possible to heat other places such as reheating the bath with a single appliance, and it is possible to integrate the appliances in the home.

However, in this conventional one, since the heating capacity is insufficient, as described above, the heating in the bathtub, so-called reheating, can only be performed as work other than cooling and heating.
Further, when the outside air temperature extremely decreases, in the case of the heat pump system, there is a disadvantage that the amount of heat absorbed from the outside air to the heat medium decreases and the heating efficiency extremely decreases.

The present invention has been made in view of the above point, and at the time of heating, the heating medium circuit of the air conditioner is heated by the hot water circuit on the side of the water heater, which enables cooling and heating and hot water supply by one device. Even if the outside air temperature is extremely low, it is possible to heat using the heat medium circuit on the air conditioner side.
In addition, when the capacity of the bath hook portion (4) is small,
Even if the air conditioner side is set to the heating operation state,
The task is to smoothly advance the reheating function.

[Technical Means] The technical means of the present invention taken to achieve the above-mentioned object is “an outdoor function part (2) having a heat medium cooling function of an air conditioner and a hot water supply function part in a casing (1). (3) and the bath portion (4) are housed, the outdoor function section is provided with a heat medium heating circuit (29), and the heat exchanger for heat absorption (26) is provided in the heat medium heating circuit (29). Is inserted, the reheating circuit (44) from the bath hook portion (4) to the bathtub (42) is branched to form a circulation heating circuit (45) to the heat absorbing heat exchanger (26), A circuit selecting device (5) capable of inserting the bath pot part (4) and the circulation pump (P) into a common part of the two circulation circuits and disconnecting the circulation heating circuit (45) and the reheating circuit (44) separately. And an air conditioning operation unit for operating the outdoor function unit (2) by making it possible to supply hot water from the hot water supply function unit (3) to the circulation circuit. Is equipped with a switching device for switching the heat medium circulation circuit in the outdoor function part between the heating operation state and the cooling operation state, and the hot water supply operation part of the hot water supply function part (3) is provided separately from the air conditioning operation part, and this hot water supply operation part is provided. It is equipped with a heating / reheating switching operation unit of the circuit selection device (5) for individually disconnecting the circulation heating circuit (45) and the reheating circuit (44). "

[Operation] The above technical means of the present invention operates as follows.

When the function of cooling the heat medium of the outdoor function section is functioning, the indoor unit (terminal unit) cools the room, and the room is cooled.

Further, since the hot water supply function part (3) can function independently, the hot water supply device can supply hot water to a desired part by its operation. Therefore, hot water can be supplied to the bathtub (42).

Next, when the inside of the bathtub (42) is in a hot water storage state, the reheating circuit (44) is made to communicate with the bath hook portion (4) and the circulation pump (P) by the operation of the circuit selection device (5). When in the operating state, the bathtub (42) is circulated and heated. That is, it will be fired. During heating, the circulation heating circuit (45) is operated by the specified operation.
Is communicated with the bath pot part (4) and the circulation pump (P), and the circulation heating circuit (45) is provided in the heat exchanger (26) for heat absorption.
The heat medium is heat-exchanged from the heat medium circuit to heat the inner heat medium of the heat medium heating circuit (29) to a constant temperature. Due to the circulation of the heat medium, heat is radiated from the indoor unit to the room, and the room is heated. At this time, the amount of heat for heating is performed by heat exchange from the hot water in the circulation heating circuit (45) that is circulated and heated in the bath hook portion (4), so that the desired heating is performed regardless of the outside air temperature. It becomes a state.

In addition, only when the outdoor function part of the air conditioner is set to the heating state in the air conditioning operation part, and the heating / reheating switching operation part is set to the heating state, circulation is performed by circulation heating from the hot water supply function part. The heating circuit (45) is in the heating medium heating state. When the heating / reheating switching operation unit is set to the reheating state, the hot water in the circulation heating circuit (45) does not circulate even if the air conditioning operation unit is set to the heating state. The bath portion (4) is located in the circulation circuit for heating the bath. That is, the reheating operation has priority over the heating operation.

[Effects] The present invention having the above-described configuration has the following unique effects.

Each functional unit housed in one casing supplies all the air-conditioning heat source and hot water required in the home, and can reheat the bath, further improving the integration of equipment. Therefore, the outdoor space can be used more effectively. When the pipe shaft of the housing complex is used as the installation location of the device, the above effect becomes more remarkable.

During heating, the amount of heat exchanged with the circulating hot water by the bath hook portion (4) is used, so that the desired heating state is achieved regardless of the outside air temperature. In other words, even if the outside air temperature drops extremely, there is no fear of impairing the heating effect of the air conditioner.

When the heating / reheating switching operation unit is set to the reheating state, even if the air conditioning operation unit is set to the heating state, the reheating operation has priority over the heating operation and the circulation heating circuit ( Since the warm water in 45) does not circulate,
Even if the capacity of the bath hook portion (4) is small, the reheating function smoothly proceeds. Normally, reheating operation is
Since the heating operation is not completed for a long time and is completed in a short time, the heating operation is stopped for a short time and practical inconvenience is reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the illustrated embodiment, a water heater function having a reheating function and a cooling / heating function are housed in a casing (1), and the casing (1) is divided into two chambers, and one of The outdoor function part (2) is accommodated in the first empty chamber (11), and the bath pot part (4) and the hot water supply function part (3) are accommodated in the other second empty chamber (12).

The outdoor function part (2) of this embodiment includes a compressor (2
2), accumulator (23), radiator (24), heat dissipation fan (21), switching valve (25) for switching heat medium circuit, and heat absorption heat exchanger (26) for heating, As the heat exchanger for heat absorption (26), a system in which heat is exchanged from a part of the circulation heating circuit (45) as a hot water circuit to a heat medium is adopted. Therefore, both ends of the circulation heating circuit (45) are connected to the downstream side of the bath pot part (4) inserted in the after-mentioned reheating circuit (44) and the upstream side of the circulation pump (P), and the bath pot is connected. The circuit selection device (5) is provided on the downstream side of the branch point on the downstream side of the section (4).
The first on-off valve (51), which is one of the two, is inserted.

During outdoor cooling, the outdoor function part (2) circulates through the circuit shown by the broken line in the figure, and cool air can be taken out from the terminals (41) and (41). At this time, the heat medium heating circuit (29) via the heat exchanger for heat absorption (26) is shut off by the operation of the switching valve (25) and the third opening / closing valve (27), and at the same time, the first opening / closing valve (51). Circulation heating circuit closed (45)
Is cut off. That is, the heating device is placed in the operation stop state.

During heating, the heat medium circuit is switched by the switching valve (25) so that the heat medium heating circuit (29) communicates with the terminals (41), (41) and the hot water in the circulation heating circuit (45) circulates. It is circulated by the pump (P) and the bath pot (4)
Is heated by the heat exchanger (26) for heat exchange from the hot water to the heat medium. As a result, the heat medium circulation circuit is switched to the state shown by the solid line in the figure, and the heat absorbed in the heat absorbing heat exchanger (26) is transferred to the terminals (41), (41).
Heat will be dissipated in these terminals (4
Hot air will blow out from 1) and (41).

On the other hand, in the second vacant room (12), a hot water supply function unit (3) and a bath hook unit (4) are provided side by side, and water is filled from the hot water supply circuit (34) connected to the heat exchanger (30). The circuit (33) is branched, and this water filling circuit (33) is connected to the bathtub (42) via the reheating circuit (44), and the other circuit is connected to the hot water supply faucet (43) of the kitchen or washroom. It is connected.

Further, the bathtub (42) and the bath hook portion (4) are connected by the reheating circuit (44), and the circulation pump (P) inserted into the reheating circuit (44) drives the inside of the bathtub (42). It is configured to be fired. Although the structure for this reheating is known, as described above, the circulation pump (P) is used.
The upstream side and the downstream side of the bath heater (4) are connected to the circulation heating circuit (45), and the bath heater (4) selects the reheating circuit (44) and the circulation heating circuit (45). It is designed to circulate and heat. In order to switch the circulation heating, a pair of second on-off valves (52), (52) are inserted in the reheating circuit (44) with the circulation pump (P) and the bath hook portion (4) interposed therebetween. When the second opening / closing valve (52) is closed and the first opening / closing valve (51) is opened, the heating state is established, and conversely, the second opening / closing valve (52) is opened and the first opening / closing valve is opened. When (51) is closed, it will be in a reheating state.

Next, the cis tank (35) is inserted into the water filling circuit (33), and the fourth tank is provided downstream of the sikh tank in the water filling circuit (33).
Adopting a structure in which the on-off valve (36) is inserted, water filling and
It is possible to supply hot water for circulation to the circulation heating circuit (45).

That is, in the water-filled state, the fourth on-off valve (36) is kept open until the hot water level in the bathtub (42) reaches a constant water level, and the circulation heating circuit ( When the hot water for circulation is supplied to 45), the fourth opening / closing valve (36) is kept open until the entire circulation heating circuit (45) is filled with hot water. The cis tank (35)
A ball tap (37) is provided at the end of the hot water supply circuit to the water supply circuit, which keeps the water level in the cis tank (35) constant and automatically opens and closes the water filling circuit.

The electric circuit for each operation control is configured as shown in FIG. 2, and the outdoor function part (2) is made conductive by the air conditioning switch (71), and the switching device included therein selects the cooling state or the heating state. You can do it. That is, when the switching device is switched to the heating side, the switching valve (25) operates to switch the heat medium circuit to a circuit in the heating operation state, and conversely, when switched to the cooling side, the heat medium circuit is in the cooling operation state. Switch to the circuit. In addition, in this embodiment, the operation unit and the air conditioning switch (71) of the switching device are arranged near a casing (1) or apart from the air conditioning operation unit (7).
It is prepared for 4).

Further, in the hot water supply operation, the hot water filling operation, and the reheating operation, including the heating state, the hot water supply switch (72) is closed to selectively select the hot water supply function section (3) and the bath hook section (4). Set to the operating state. For this selection, a changeover switch (8) is provided so that the operating states of hot water filling, reheating and heating can be selected. When the hot water supply switch (72) is closed, the hot water supply function unit (3) waits in a state in which hot water can be supplied, and when the hot water supply faucet is opened or when the hot water supply function unit (3) is in a water filling state, the hot water supply function unit (3) is turned on. It is automatically operated. The hot water supply switch (72) and the changeover switch (8) are provided on a hot water supply operation panel (75) which is installed away from the air conditioning operation unit and is suitable for controlling the kitchen or bathroom water heater. There is. Here, the changeover switch (8) functions as a heating / reheating switching operation section.

The water filling terminal (81) and the reheating terminal (82) are connected to the parallel circuit of the relay (R ₁ ) and the second on-off valves (52) and (52), and one of the water filling terminals (81) is connected to the parallel connection. A water level switch (73) for detecting the hot water level in the bathtub is inserted between the circuits.

The first opening / closing valve (51) is connected to the other heating terminal (83), and the heating terminal (83) and the reheating terminal (82) are also connected.
And are both connected to the parallel circuit of the bath operation device and the timer (T).

A parallel circuit of the normally open output contact (T ₁ ) of the timer (T), the water flow switch (S ₂ ) inserted in the discharge side of the pump, and the normally open output contact (R ₁₁ ) of the relay (R ₁ ). Is connected to the pump (P), the fourth on-off valve (36) inserted in the water filling circuit, and the relay (R ₃ ) parallel circuit.

The set time of the timer (T) is set to the time required to keep the pump (P) in the operating state from the start of the pump until the water flow occurs in the circuit to the bath hook (4). However, a few seconds at the longest is sufficient.
Further, the relay (R ₃ ) is a relay for driving a fan which will be described later, and its normally open output contact (R ₃₁ ) is inserted in the circuit to the fan (21). Further, the water heater connection device is wired so as to be in a conductive state by closing the hot water switch (72).

By adopting the electric circuit of the above configuration, by hot water filling operation,
When the amount of hot water set by the water level switch (73) is stored in the bathtub (42), the pump (P) is automatically stopped and the fourth opening / closing valve (36) is closed.

When set to the heating state, the circulation heating circuit (45) is automatically supplied with the necessary amount of hot water from the cis tank (35), and when this circuit is filled with hot water, the ball tap (37).
By the action of, the supply of hot water is stopped. At this time, the second
Since the on-off valves (52), (52) are in a non-conducting state, the reheating circuit (44) and the bath hook portion (4) are shut off. As long as the heating operation continues, the pump (P) continues to operate due to the action of the water flow switch (S ₂ ).

Next, during the reheating operation, only the second opening / closing valve (52) is opened and the normally closed output contact (R ₄₁ ) is opened by the action of the relay (R ₄ ) connected to the reheating terminal (82). Then, pump (P) with the fourth on-off valve (36) closed.
Becomes the operating state. That is, circulation heating is performed between the bathtub (42) and the bath hook portion (4).

Next, in this embodiment, the exhaust air from the heat exchanger (30) and the bath heater (4) is passed through the exhaust pipe (32) to the fan (2).
The discharge port (A) of 1) is open and is connected in communication with the exhaust collecting chamber (6) that is connected to the side wall of the casing (1). Moreover, in the hot water heater operating state, the fan (21) is connected to the fan (21). It is designed to be in the operating state.
The signal from the water flow switch (S ₁ ) provided in the water circuit on the inlet side of 0) is adopted as the input signal. Then, as shown in FIG. 2, a water flow switch (S ₁ ) is inserted in the drive circuit, and this water flow switch (S ₁ ) detects the water flow and outputs the signal when the water flow is closed to cause the relay (R ₂ ) Is activated and its normally open output contact (R ₂₁ ) causes the fan (21) to conduct.
Also, when the bath kettle burns, the relay (R ₃ ) output contact (R ₃₁ )
Similarly, the fan (21) is activated.

Therefore, each exhaust gas is guided into the exhaust gas collecting chamber (6) and discharged from the exhaust gas outlet (61). At this time, the fan (2
Since the air is discharged together with the discharge air from 1), the suction force acts at this time, and the exhaust gas of the exhaust pipe (32) is smoothly discharged.

In addition, in the above embodiment, during the heating operation, the switching device of the outdoor function unit (2) of the air conditioner is switched to the heating state, and the operation switch (D) of each terminal is closed, which is separate from these. The hot water supply switch (72) provided in the switch is closed and the changeover switch (8) is changed over to the heating terminal (83) side. In this state, the changeover switch (8) is changed over so as to fill or reheat the water. When set to the state,
The hot water circulation of the circulation heating circuit (45) is stopped, and the heating medium heating operation for heating is stopped. That is, the hot-water filling and the reheating operation have priority over the heating operation.

Further, a freeze prevention heater is provided at an appropriate position of the circulation heating circuit (45) so that these heaters are brought into conduction when the outside air temperature or the ambient temperature near the circulation heating circuit (45) drops to the freezing temperature. If so, the circuit can be prevented from freezing. The same applies when the hot water in the circulation heating circuit (45) is circulated and heated by the bath portion (4) at regular time intervals.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, and FIG. 2 is an electric circuit diagram of a main part thereof. In the figure, (1) ... Casing (2) ... Outdoor function part (3) .. hot water supply function. Part (30) …… Heat exchanger (32) …… Exhaust stack (21) …… Fan

Claims (1)

[Claims] 1. An outdoor function part (2) having a heat medium cooling function of an air conditioner and a hot water supply function part (3) inside a casing (1).
And a bath pot part (4), the outdoor function part is provided with a heat medium heating circuit (29), and an endothermic heat exchanger (26) is inserted into the heat medium heating circuit (29), The bath pot (4)
The reheating circuit (44) from the bath to the bathtub (42) is branched to form a circulation heating circuit (45) to the heat exchanger for heat absorption (26), and the bath kettle is provided at a common portion of the two circulation circuits. Division (4)
And the circulation pump (P) are inserted, and the circulation heating circuit (4
5) and a circuit selection device (5) capable of individually shutting off the reheating circuit (44) so that hot water can be supplied to the circulation circuit from the hot water supply function part (3) and the outdoor function part (2) can be operated. The air-conditioning operation part is equipped with a switching device for switching the heat medium circulation circuit in the outdoor function part between the heating operation state and the cooling operation state, and the hot water supply operation part of the hot water supply function part (3) is provided separately from the air conditioning operation part. A cooling / heating water heater having a heating / reheating switching operation unit of a circuit selection device (5) for individually disconnecting the circulation heating circuit (45) and the reheating circuit (44) in the hot water supply operation unit.