JPH0446344B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a refrigerant-heated hot water heater/cooler.

BACKGROUND ART As shown in FIG. 6, a conventional heat pump hot water heater/cooler includes a compressor 1, a four-way valve 2, a three-way valve 3, an indoor unit 4, a first capillary reach tube 5, a second capillary reach tube 6, A cooling hot water supply cycle device comprising a water/refrigerant heat exchanger 7 connected in sequence, the compressor 1, the four-way valve 2, the outdoor unit 8, the third capillary tube 9, the first electromagnetic valve 10, and the water/refrigerant heat exchanger. 7, an air heat collecting type hot water supply cycle device formed by sequentially connecting the three-way valve 3, the compressor 1, the four-way valve 2, the outdoor unit 8, the second solenoid valve 11, the first capillary reach tube 5, The indoor unit 4, the three-way valve 3
an atmospheric heat radiation type cooling cycle device configured by sequentially connecting the following: the compressor 1, the four-way valve 2,
An atmospheric heat collection type heating cycle device configured by sequentially connecting the outdoor unit 8, the third capillary reach tube 9, the third solenoid valve 12, the indoor unit 4, and the three-way valve 3 to form a cycle, and the water refrigerant heat exchanger. It is composed of a water heating and hot water supply device that connects a water circulation pump 13, a water circulation pump 13, and a hot water storage tank 14, and is designed to collect atmospheric heat and perform heating for hot water supply or heating through an indoor unit. I was getting used to it. (For example, Japanese Unexamined Patent Application Publication No. 59-157459) Problems to be Solved by the Invention However, in the above configuration, generally, when the outside temperature falls, the hot water heating capacity and heating capacity tend to decrease. There was a problem that it could not be used in seasons where the outside temperature was low, such as in cold regions. On the other hand, high-pressure refrigerant or low-pressure refrigerant is heated with a gas burner, oil burner, etc., and a compressor is used as a refrigerant pump to form a heat transfer system, which can be used for heating,
Alternatively, there are refrigerant-heated heating and cooling systems that increase hot water supply capacity. In this system, the compressor is used as a refrigerant pump, so power for heat transfer is required. In addition, the atmospheric heat collection cycle is stopped when the outside temperature is low, and only the amount of heat for heating the refrigerant is used, which results in the need for a large capacity burner section, resulting in an increase in size. Additionally, this type of refrigerant heating method has the problem of refrigerant leaking and becoming toxic when heated, and the corrosion resistance and durability of the refrigerant passage system in the burner section have become important issues. .

Means for Solving the Problems In order to solve the above problems, the refrigerant heating type hot water heating/cooling device of the present invention includes a boiler hot water supply device having a hot water supply function, and a heat pump that collects and radiates heat from indoor and outdoor atmospheric heat. A heat pump refrigeration cycle device has a refrigeration cycle function and a heat pump water heating function that collects indoor and outdoor atmospheric heat to heat water in the boiler hot water supply device, and heats a refrigerant with hot water from the boiler water heater, and heats the refrigerant from this. The heat-driven heat transfer device has the function of transferring heat without electricity, superimposing the refrigerant with the high-pressure refrigerant of the heat pump refrigeration cycle device, leading to the indoor unit, where the heat is radiated, condensing, and returning. This is a refrigerant-heated hot water heater/cooler.

Effects The present invention has the above configuration, and the first effect is as follows.
The refrigerant is heated with hot water in the boiler water heater, the heat is transferred without electricity, the outdoor atmospheric heat is collected, and the heat is superimposed with the heat sent by the heat pump and guided to the indoor unit for heating. Because the refrigerant is not directly heated by a burner as in conventional systems, there is no corrosion of the heat exchanger in the refrigerant heating section, and even if the refrigerant leaks, it will not be toxic due to burner heating. There is no problem with gas being generated. Furthermore, as described above, the system can be said to have a high energy-saving effect because the heat of the refrigerant heated with hot water is transferred and utilized without electricity. Moreover, since the amount of heat transferred and the amount of heat collected from the atmospheric heat by the heat pump are used in a superimposed manner, it is possible to use a large amount of heat in an energy-saving manner. The second function is to collect air heat either indoors or outdoors by the heat pump and heat the water in the boiler water heater. For this reason, especially when the water temperature is low, the heat pump operates at high efficiency, resulting in greater energy savings than heating water with a boiler. Furthermore, by simultaneously exhibiting the water heating action by the boiler in addition to the second action, the rise in water temperature is extremely high, making it easy to use. The third effect is to collect the amount of heat in the room through the indoor unit by a heat pump effect, and also obtain a cooling effect in which the heat is radiated through the outdoor unit.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, an indoor heat exchanger 1 includes a compressor 15, a four-way valve 16, and a blower 17.
8. A first expansion device configured in a parallel circuit of a first check valve 19 and a first expander 20, a first two-way valve 21, a second two-way valve 22, a second check valve 23 and a first expansion device. a second expansion device configured in a parallel circuit of two expanders 24;
A heat pump refrigeration cycle device that sequentially connects an outdoor heat exchanger 26 having a blower device 25, a boiler type water heating device 28, a hot water storage tank 29, and a water supply circuit 30.
A boiler-type hot water supply device consisting of a hot water supply circuit 31 and a water circulation pump 32 that circulates hot water in the boiler-type water supply device.
a refrigerant heater 33 that circulates the refrigerant and heats the refrigerant by the calorific value of the warm water, and the refrigerant heater 3
3, first check valve for heat transfer 34, refrigerant control device 3
5. Second check valve for heat transfer 36, electromagnetic valve for closing heat transfer 37, the first two-way valve 21 and the second two-way valve 2
A thermally driven heat transfer device configured by sequentially connecting refrigerant pipes between the two, and connecting the discharge part of the compressor 15 and the refrigerant heater 33;
Bypass solenoid valve circuit 39 that bypasses the heat transfer circuit between the check valve 34 and the heat transfer closing solenoid valve 37
and a pressure regulating solenoid valve 38 that connects the refrigerant control device 35 and the discharge section of the compressor 15 and opens and closes intermittently or continuously.

In the above configuration, one of the operation modes is the refrigerant heating type hot water supply and heating mode. As shown in the circulation direction indicated by the arrow in FIG. 2, the indoor unit 18 condenses,
A portion of the liquid refrigerant flowing out of the first expansion device flows into the refrigerant control device 35 through the open electromagnetic valve 37 for shutting off heat transfer and the second check valve 36 for heat transfer, and is stored in the refrigerant control device 35. Refrigerant pressure adjustment solenoid valve 38
Depending on the head difference between the refrigerant control device 35 and the refrigerant heater 33 and the balance of internal pressure, the refrigerant heater 3
3, and at the same time as the pressure regulating solenoid valve 38 is closed, it is heated and its state changes to refrigerant heated vapor. This refrigerant vapor is superimposed on the refrigerant heated vapor discharged from the compressor 1, and heat is transferred to the indoor heat exchanger 18. The same refrigerant circulation from the indoor heat exchanger 18 is repeated, and the heating function is achieved. Also, as explained above, a part of the liquid refrigerant condensed by heat radiation in the indoor heat exchanger 18 is transferred to the refrigerant heater 26 as a solid.
The remaining refrigerant passes through the second two-way valve 22 and the second expander 24, evaporates in the outdoor heat exchanger 26, absorbs atmospheric heat, heads toward the compressor 15, and is discharged again by the high-pressure compression pump. It is responsible for the function of the heat pump cycle. In this way, the amount of heat collected from the outdoor heat exchanger 26 and the amount of heat obtained by the refrigerant heater are superimposed, so even if the amount of atmospheric heat collected is reduced when the outside temperature is low, To heat the refrigerant, increase the heating heat amount with a boiler-type heating device, or increase the amount of hot water circulation by using a capacity control type or variable speed type water circulation pump 32, or operate both at the same time. By increasing the amount of heat from the container, a comfortable heating capacity can be obtained without reducing the heating capacity. In addition to this function, the water in the hot water storage tank 29 can be directly heated by the boiler-type heating device 14 and can be used for hot water supply, so it works particularly effectively as a hot water heater for cold regions. . In addition, as shown in Fig. 3, the water circulation pump is stopped, the heat transfer shutoff solenoid valve 37 is closed, the four-way valve 2 is switched as shown by the dotted line, and the refrigeration cycle is switched to the cooling mode. It also provides a cooling effect.

Further, as shown in FIG. 4, the second two-way valve 8, the heat transfer closing solenoid valve 23, and the pressure regulating solenoid valve 24 are closed, and the operation of the boiler type heating device is stopped.
By circulating the refrigerant and water as shown by the arrow and switching to the heat pump hot water heating/cooling mode, the room can be cooled, and the heat absorbed can be used to heat the water in the hot water tank and use it for hot water supply. Clean hot water supply and cooling effects can be achieved in the summer without emitting waste gas. In addition, as shown in Fig. 5, the first two-way valve 7, the heat transfer closing solenoid valve 37, and the pressure regulating solenoid valve 36 are closed, the operation of the boiler type heating device is stopped, and the operation is performed as shown by the arrow. By circulating the refrigerant and water and switching to the heat pump hot water heating mode, atmospheric heat is absorbed, and this heat can be used to heat the water in the hot water storage tank and use it as hot water supply heat. In addition to the functions and effects explained above for the various operation modes, to further increase the effect, use a variable speed type water circulation pump or a pump with a displacement control type and a reversible type, and operate the water circulation pump. It can be said that it is appropriate to change it depending on the mode and the degree of use of heat amount.

Effects of the Invention As described above, according to the refrigerant heating type hot water supply heating/cooling machine of the present invention, the following effects can be obtained.

(1) A hybrid cycle is constructed of a boiler-type heating device, a refrigerant heater using this calorific value, a heat transfer device, and an air heat collecting type heat pump that overlaps this heating-driven heat transfer device with the calorific value. Therefore, if the amount of heating heat is insufficient due to fluctuations in the amount of atmospheric heat collected, it is possible to compensate by increasing the heating amount of the boiler-type heating device and increasing the amount of heat transferred by the heat-driven heat transfer device. Heating type hot water supply heating effect can be obtained.

(2) Since the heat-driven heat transfer device uses the same refrigerant as the heat pump cycle, the heat exchanger, transfer circuit, etc. are simplified, resulting in lower costs.

(3) By switching the cycle, the cooling function and the
It is possible to configure the so-called cooling hot water heating mode configuration in which the hot water function that uses the absorbed heat for hot water supply is used, which has a high energy saving effect when using the equipment in the summer, and also has the effect of being able to use the waste gas without releasing it into the atmosphere. be.

(4) Atmospheric heat is absorbed by a heat pump and this amount of heat is used for hot water supply. Since it can be configured in a so-called heat pump hot water heating mode, a relatively high amount of atmospheric heat is pumped up by the heat pump during the middle of the season, resulting in a high energy saving effect.

(5) It is possible to switch to a configuration that allows operation in a cooling mode similar to a conventional air conditioner, which absorbs the amount of heat in the room and radiates it to the atmosphere, which is effective in improving usability in the summer.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a refrigerant-heating type hot water heating/cooling machine according to the first embodiment of the present invention, Fig. 2, Fig. 3, Fig. 4
5 is a configuration diagram showing the operating modes of the same machine, such as a hot water supply heating mode, a cooling mode, a hot water supply cooling mode, and a hot water supply heating mode, and FIG. 6 is a configuration diagram of a conventional heat pump heating/cooling supply device. 15... Compressor, 16... Four-way valve, 17... Indoor heat exchanger, 19... First check valve, 20... First expander, 21... First two-way valve, 22... Second two-way valve, 23... Second check valve, 24... Second expander, 26... Indoor heat exchanger, 27... Accumulator, 28... Boiler type heater, 29... Hot water storage tank , 33... Refrigerant heater, 34... Heat transfer first
Check valve, 35... Refrigerant control device, 36... Second check valve for heat transfer, 37... Solenoid valve for closing heat transfer, 3
8...Solenoid valve for pressure adjustment, 39...Bypass solenoid valve circuit.

Claims (1)

[Scope of Claims] 1. A first expansion device in which a compressor, a four-way valve, an indoor heat exchanger, a first check valve, and a first expander are configured in a parallel circuit, a first two-way valve, and a second two-way valve. valve, the second check valve and the second
A second expansion device in which an expander is configured in a parallel circuit, a heat pump refrigeration cycle device in which an outdoor heat exchanger is sequentially connected, a boiler type water heating device consisting of a boiler type water heating device, a hot water storage tank, a water supply circuit, and a hot water supply circuit; A refrigerant heater using hot water in the boiler water heater, the refrigerant heater, a first check valve for heat transfer, a refrigerant control device, a second check valve for heat transfer, a solenoid valve for closing heat transfer,
A heat-driven heat transfer device in which a refrigerant pipe between the first two-way valve and the second two-way valve is sequentially connected, and a discharge part of the compressor and the refrigerant heater are connected; a bypass solenoid valve circuit that bypasses the heat transfer circuit between the first check valve and the heat transfer closing solenoid valve;
A refrigerant-heating hot water heating/cooling machine comprising a pressure regulating solenoid valve connected between the refrigerant control device and a discharge part of a compressor and opened and closed intermittently or continuously. 2. A refrigerant heating type hot water supply heating/cooling machine according to claim 1, comprising a water circulation pump that connects a boiler water heater and a refrigerant heating circuit to circulate hot water in the boiler water heater. 3 The water circulation pump is a rotation speed controlled water circulation pump,
Alternatively, the refrigerant heating type hot water supply heating/cooling device according to claim 2, which comprises a capacity controlled water circulation pump. 4. The refrigerant-heating hot water heating/cooling machine according to claim 2 or 3, wherein the water circulation pump is a reversible circulation pump in the circulation direction.