JPS6082755A - Heat pump type bath water heating cooling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump type bathtub water heating and cooling device,
Specifically, after hot water has been supplied to the bathtub, if the temperature of the bath water drops or is too high, heat pump operation can be used to reheat the bath water, rapidly heat or cool it, or recover heat from the remaining hot water. This invention relates to a heat pump type bathtub water heating and cooling device that enables effective use of water resources and efficient use of energy for multiple purposes.

Conventionally, as a bathtub water heating device for heating bathtub water, one that uses a condensation coil in a refrigeration cycle and heats the bathtub water with the condensation heat of a refrigerant is well known (Utility Model No. 58-1999).
(See Publication No. 89780).

To explain this based on Figure 9, the button is the compressor, the sail is the bathtub heat exchanger that acts as a condenser, the older sister is the expansion mechanism, and the link is the evaporator, which is the outdoor heat exchanger. Connected by piping. The condenser is disposed inside the bathtub and heats the bathtub water using the heat of condensation of the refrigerant.

The above-mentioned conventional technology can only perform heating operation to heat the bathtub water, and can only be used when lowering the temperature of the bathtub water according to the bather's preference, or when lowering the temperature of the bathtub water by over-boiling it. The only thing that could be done was to lower the water temperature by increasing the amount of water. As a result, the bathtub water overflows, wasting water resources.

The present invention was invented in view of the 1st century, and the purpose of the present invention is to heat, reheat, or cool the hot water in the bathtub when it is necessary to heat the hot water in the bathtub from the viewpoint of resource saving and effective use of energy. Our goal is to provide a heat pump type bathtub water heating and cooling device that can perform cooling, etc. by simply switching the heat pump without wasting water resources, such as adding hot water or increasing water when necessary. By recovering the waste heat from the remaining hot water after bathing and performing various operations such as efficient heat utilization, all requests for bath water can be met by efficient use of resources and energy and only by heat pump operation. The purpose of the present invention is to provide a heat pump type bathtub water heating and cooling device that satisfies these needs.

From this point of view, the object of the first invention is to provide a heat pump type bathtub water heating and cooling device that is provided with a bathtub unit and an outdoor unit and that enables various operations such as heating, reheating, and cooling of hot water in the bathtub. To achieve this objective, the configuration of the first invention is to connect one side of each of the bathtub heat exchanger and the outdoor heat exchanger to the compressor. The pipes are connected to each other through a valve switching mechanism that includes a valve and each pipe of each heat exchanger that becomes an outgoing pipe or a returning pipe by controlling the valve, and the other side of each heat exchanger is connected to each pipe of each heat exchanger that becomes an outgoing pipe or a returning pipe by controlling the valve. It is characterized by a heat pump type bathtub water heating and cooling device connected via an expansion mechanism.

Next, the object of the second invention is to provide a hot water storage tank unit attached to the bathtub unit and outdoor unit of the first invention, and in addition to the object of the first invention, heat is released to the hot water in the hot water storage tank. 5- A heat pump that enables cooling operation of bathtub water, heats the hot water in the hot water storage tank at this time, and recovers and heats the remaining hot water in the bathtub so that it can be used as a hot water supply device. It is an object of the present invention to provide a bathtub water heating and cooling device, and in order to achieve this object, the configuration of the second invention is to provide a compressor with a bathtub heat exchanger, an outdoor heat exchanger, and a hot water storage tank heat exchanger. One side of each of the two heat exchangers is connected to a valve and each piping of the bathtub heat exchanger and the outdoor heat exchanger that becomes an outgoing pipe or a returning pipe by controlling the valve,
The piping of the hot water storage tank heat exchanger, which becomes an outgoing pipe under the control of the valve, is connected via a JJ valve switching mechanism, and the other side of each of the eight heat exchangers is connected to the piping of each of the eight heat exchangers. A heat pump type bathtub water heating and cooling device is characterized in that the heat pump type bathtub water heating and cooling device is connected to each other via piping via each Il expansion mechanism for #in.

Furthermore, in addition to the object of the second invention, the piping of the hot water storage tank unit is changed using eight units similar to the second (2) electric type, in addition to the object of the second invention. This purpose is to provide a heat pump type bathtub water heating/cooling device that enables operations such as heating or rapid heating of bathtub water using hot water as a heat source, and heating of hot water in a hot water storage tank using air as a heat source. In order to achieve
The configuration of the eighth invention includes a compressor, a bathtub heat exchanger, an outdoor heat exchanger, and hot water storage N! One side of each of the eight heat exchangers of the heat exchanger is provided with a valve and each pipe of the eight heat exchangers that becomes an outgoing pipe or a returning pipe by controlling the valve, and is connected to each pipe via a valve switching mechanism. The heat pump type bathtub water heating and cooling device is characterized in that one side of each of the eight heat exchangers is connected via piping via each expansion mechanism for each of the eight heat exchangers.

The fourth object of the invention is to use eight units as in the eighth invention, change the piping of the outdoor unit, and transfer heat to the outside by cooling the hot water in the bathtub. The configuration is the same except that the discharge operation is no longer possible, and in order to achieve this objective, the configuration of the fourth invention is that the compressor is equipped with eight heat exchangers, a bathtub heat exchanger, an outdoor heat exchanger, and a hot water storage tank heat exchanger. The male side of the exchanger is connected to a valve, and the piping is connected to the bathtub heat exchanger and the hot water tank heat exchanger, which become an outgoing pipe or a returning pipe by controlling the valve, and the piping, which becomes a returning pipe by controlling the valve. The piping is connected to the piping of the outdoor heat exchanger through a valve switching mechanism provided with the piping, and the other side metal of each of the eight heat exchangers is connected to the piping of the outdoor heat exchanger, and each of the expansion mechanisms for each of the eight heat exchangers is connected to the piping of the outdoor heat exchanger. A heat pump type bathtub water heating and cooling device connected to piping.

Each embodiment of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a schematic layout diagram of each device forming the first basic form of the present invention, and FIG. 2 is a schematic layout diagram of each device forming the second basic form of the present invention. is an outdoor unit, lB) is a bathtub unit, (1) is a compressor, (3
) is an outdoor heat exchanger, flash is a valve switching mechanism, and (2) is an expansion mechanism, which are housed in the outdoor unit (4).
2) is a bathtub heat exchanger housed in the auxiliary hot water storage tank (6);
(6) is a bathtub, which connects the inside of the bathtub (8) and the inside of the hot water storage tank (5) with piping and a pump P) to circulate water. In addition, (7) is the hot water temperature control of the bathtub (6), (
8) is the city water delivery pipe.

Figure 2 shows a hot water tank unit l[])f: attached to the equipment in Figure 1, consisting of a hot water tank (9) and a hot water tank heat exchanger (4) housed therein, Ql is the hot water tank (9) is the hot water piping, and (9) is the valve switching mechanism. In addition, electric heater,
Gas heaters are attached to the hot water storage tank unit (10) and the bathtub unit (H1) as needed, and can initially be used as a heating source for hot water supplied into the bathtub (6).

The outline of the basic circuit of the present invention is as described above, including the compressor (1), valve switching mechanism (3), expansion mechanism (Y), bathtub heat exchanger (2) of each unit, and outdoor heat exchanger (2). exchanger 1
3), the refrigerant circuit configuration between each heat exchanger of the hot water tank heat exchanger 14) is as follows.

FIG. 8 is an example of the refrigerant circuit configuration of the first invention, (1)
is the compressor, ■) is the bathtub unit and the bathtub heat exchanger (2),
The bathtub (6) and pump P) are accommodated as described above, and the bath (3)
) is an outdoor heat exchanger, and ttn, +13 is a connection from the discharge port (1a) of the compressor (1) to the bathtub heat exchanger (2).
), an outgoing pipe that sends refrigerant to the outdoor heat exchanger 131, Qfl, Q
η is an electromagnetic on-off valve, which is installed in the outgoing pipe (Ill, aa, respectively), Q41, as is an electromagnetic on-off valve, which is installed in the outgoing pipe (Ill, aa), and Q41, as
) Return pipes that return refrigerant from the outdoor heat exchanger (3) to the inlet (1b) of , these are the outgoing pipes [111, U] each having n on-off valves αe and aη, and the return pipe (141, (Is) having n on-off valves αe and aη, respectively, and the valve switching mechanism (X+) is configured with Switching mechanism (xl)
Outbound pipe (company), Q2+ and return pipe G41. [lS are connected to the - side (compressor t1) side of the bathtub heat exchanger (2) and the outdoor heat exchanger +3) and @, respectively.

Therefore, the fins and @ are expansion valves that reduce the pressure of the flows to the bathtub heat exchanger (2) and the outdoor heat exchanger 13), respectively.
υ is 7. Bathtub heat exchanger (2), outdoor heat exchanger 13)
A check valve is provided in parallel with the expansion valve fin, (c) and the expansion mechanism (Yt
) and (Y2), respectively, on the other side (compression a 11) of the bathtub heat exchanger (2) and the outdoor heat exchanger (3).
and the opposite side) (goods), (c) connected to the expander'Il
The downstream sides of l (Yt) and (Yz) are connected by piping.

As shown in FIG. 8, various operations are performed by controlling the opening and closing of the on-off valves atp, aη, fill, and Co., Ltd. of the valve switching mechanism (Xl).

First, the hot water in the bathtub (6), which uses air as its heat source, is heated.
For heating operation with reheating, the valve switching mechanism (X open/close valve aω, (21) is opened, and the refrigerant is transferred from the compressor (1) to the bathtub heat exchanger (2) and the expansion mechanism (Yl). , (Y2) to the outdoor heat exchanger 13) and the compressor (1), and is expanded by the expansion mechanism (Y2) to heat the hot water in the bathtub (6).

- For cooling operation to rapidly cool the hot water in the bathtub (6), the on-off valves aη and αω of the valve switching mechanism (X+) are opened, and the compressor (1
), Outdoor heat exchanger 1: (), Expansion mechanism (Y2), (
The hot water in the bathtub (1) is expanded by the expansion mechanism (Y+) in a cycle of the bathtub heat exchanger (2), and the compressor (1) to cool the hot water in the bathtub (1).

In addition, when frost forms on the outdoor heat exchanger (3), the defrost operation is of course carried out in the cooling operation, and when there is hot water remaining in the bathtub (6), rapid defrost is carried out. Ru.

In addition, since the hot water in the bath [fi+] is forcibly circulated by the pump (P), the pump P) must be operated when heating and cooling the hot water in the bathtub (6). Since all of the dormitory examples shown in FIG. 8 are the same when equipped with pumps, the explanation will be omitted below.

Figure 4 shows an example of the refrigerant circuit configuration of the second invention, in which a hot water storage tank heat exchanger (4) is installed in addition to the bathtub heat exchanger (2) and outdoor heat exchanger (3) shown in Figure 8. It was established by
For this reason, the difference from the configuration in FIG. 8 is that the outgoing pipe a31t has an on-off valve αB for the hot water storage tank heat exchanger (4) and is added to form a valve switching mechanism (X2), and the expansion mechanism is different. . Although (6) is a hot water tank unit, an example is shown in which the arrangement structure of the hot water tank heat exchanger (4) is different from that shown in FIG.

Sunanonmo, bathtub heat exchanger (2), outdoor heat exchanger 13)
The expansion mechanisms of the hot water storage tank heat exchanger (4) are as follows. , @, ni) are expansion valves that reduce the pressure of the flow to the bathtub heat exchanger (2), outdoor heat exchanger (3), and hot water tank heat exchanger (4), respectively. (υ, □□□ are check valves that block the flow n to each of the heat exchangers and do not reduce the pressure in the opposite direction, and the expansion valve surface, @.

(2) are provided in parallel with each other, (to), (goods),
C (51 is an electromagnetic on-off valve, 7n is the expansion valve,
(to), ni) and the check valve parallel to this (to), @, (to)
The expansion mechanisms (Zl) and (
Z2) and (Zs), which are the other side of the bathtub heat exchanger (2), the outdoor heat exchanger 131, and the hot water tank heat exchanger (4) (the side opposite to the compressor (1)). (Foundation) l(
2511 (to), and each expansion mechanism (Zl
), (Z2), and (Z3) are connected in parallel through piping (4ω) on the downstream side.

Figure 4 shows the configuration as described above, and the valve switching mechanism (x2).
, (181, f1!11, (2G) and the opening/closing valves ci, c+jun, and C151 of each expansion mechanism (Zl), (z2), (Zs) are controlled to open and close, and the following operations are performed.

That is, the heating and cooling operation of the hot water in the bathtub (6), and the defrosting operation of the outdoor heat exchanger +3) are performed in the same manner as in Figure 8. n1 The operation that is added to the operation in Figure 8 is to release heat to the hot water storage tank (9). During cooling operation of hot water in the bathtub (6), the on-off valves aS, aω and (to), (to) are opened, and the compressor (1), hot water tank heat exchanger (4), expansion mechanism (Ys), ( A cooling operation is performed in a cycle of the bathtub heat exchanger (2), the compressor (1), and the bathtub heat exchanger (2). At this time, the hot water tank heat exchanger (4) is heated,
In addition, when there is hot water left in the bathtub (6), this heat is recovered to efficiently heat the hot water in the hot water tank (91), and the hot water in the hot water tank (9) is used for hot water supply such as supplying hot water to the bathtub (9). Available.

FIG. 5 shows an example of the refrigerant circuit configuration according to the eighth invention, and the difference from the configuration shown in FIG.
) is connected to the return pipe aω having an on-off valve (211) together with the outgoing pipe (13) having an on-off valve of 0 seconds.

By adding the above configuration, the following operation is performed in addition to the operation shown in FIG. 4.

First, to heat the hot water in the hot water tank (9) using air as a heat source, open the on-off valves αη, 12 kai (to), (to), and turn on the compressor (1) and hot water tank heat exchanger (4). , expansion mechanism (Z2),
(Zl), the outdoor heat exchanger 13), and the compressor (1) cycle, heating operation of the hot water in the hot water storage tank (9) using the hot water in the bathtub (6) as a heat source is performed by the on-off valve aω. , r21
1, ci, and ca are opened, and the cycle of compressor (1), hot water tank heat exchanger (4), expansion mechanism (Zl), (Z3), bathtub heat exchanger (2), and compressor (1) is performed. Heating operation is performed.

In addition, the rapid heating operation of the hot water in the bathtub (6), which is used as the hot water t-heat source in the hot water storage tank (9), is performed using the on-off valves Q61, (211, (2
), (to), 1 compressor 11), bathtub heat exchanger (
2), expansion mechanism (Zl), (Zs), hot water tank heat exchanger (
4) Rapid heating operation is performed in the cycle of the compressor (1).

Next, all the exhaust heat of the remaining hot water in the bathtub (6) is recovered and stored (14).
- To heat the hot water in the hot water tank (9), press the on-off valve, 191. □
□□, C (5) is opened, and the cycle of compressor (1), hot water tank heat exchanger (4), valve mechanism (Ya), (Y+), bathtub heat exchanger (2), compressor 11) Heating operation is performed in the same manner as in the example in Figure 4, but if the temperature of the storage tank (9) is high, the heating operation is performed from the outdoor heat exchanger 13) to prevent the compressor (1) motor from overheating. It is possible to switch to operation that releases heat. Moreover, the heat source of the hot water storage tank (9) can also be set to defrost operation.

Next, FIG. 6 shows an example of the refrigerant circuit configuration according to the fourth invention, and the differences from the configuration shown in FIG. 5 (eighth invention example) are as follows.
The outgoing pipe 0 having the on-off valve 0η to the outdoor heat exchanger (3) in Fig. 5 is omitted, the other configuration is the same, and the air (outdoor heat exchanger (3)) is 5 except that the cooling operation of the hot water in the heat releasing bathtub (6) and the defrosting operation by cooling the hot water of the hot water storage mf91 were no longer possible.
The same operation as in the illustrated example is possible.

That is, heating or reheating the hot water in the bathtub (6) using air as a heat source, and the outdoor heat exchanger (3) in the first invention.
) A bathtub (6) that absorbs heat in the hot water tank (9) instead of absorbing heat in the hot water tank (9)
The hot water in the bathtub (6) is cooled, and the hot water tank (6) is used as a heat source.
9) Heating the hot water and, if there is any remaining hot water in the bathtub (6), an operation that recovers this heat to the hot water in the hot water storage tank (9);
It is possible to rapidly heat the hot water in the bathtub (6) using the hot water in 9) as a heat source.

Above, the first to fourth invention examples have been explained with reference to FIGS. 8 to 6, respectively, and these operating conditions (f-shown in Table 1).

Above, the embodiments of the first to fourth inventions have been explained based on FIGS. 8 to 6, but the first to fourth inventions are not limited to these embodiments. Instead, an example of changing the design of Tanesaki can be considered, as explained below.

First, the fourth to sixth inventions are examples of the second to fourth inventions.
In the figure, a bathtub heat exchanger (2), an outdoor heat exchanger (3)
), the other side of each heat exchanger (the side opposite to the compressor (1)) of the hot water storage MI heat exchanger (4) is connected to each expansion mechanism (zl)l(z2L(
Although an example has been described in which the elements are connected in parallel via z8), the same effect can be obtained even if the elements are connected in series instead of in parallel.

For example, to explain this with respect to Figure 7, this is the 6th
This is an example in which the example of parallel connection of each heat exchanger in the figure is changed to series connection. Valve exchange mechanism (X4) between the compressor (1) and each heat exchanger
) are exactly the same, except that a hot water tank heat exchanger (4) is interposed between the bathtub heat exchanger (2) and the outdoor heat exchanger (3) and connected in series, and in this case, each heat exchanger The expansion mechanism between them is different. That is, the expansion at! (
Zt), (Z2), and (Zs) have the same configuration, and the expansion mechanisms for each heat exchanger have been changed to common expansion mechanisms for the two heat exchangers (Wl) and (W2). There is. To explain this, +411, (transfer).

0J, (Foundation) is an expansion valve, (453, (Trans)I, (4
71, I is a check valve and the expansion valve 41i + IAZ
The function of this expansion mechanism is the same as the sixth
In the diagram, the function to reduce the pressure of the refrigerant entering each heat exchanger (
expansion valve), and a function to block the flow in that direction and allow flow from each heat exchanger (a check valve is installed in parallel with the expansion valve),
It is configured with a function (on/off valve) that blocks the flow to each heat exchanger in series with this, but in this example, it is configured with a function (on/off valve) that blocks the flow to the heat exchanger (2). Expansion valve (1) and check valve (1), function to reduce pressure of flow to hot water storage 'M heat exchanger (4) (expansion valve (3) and check valve (1)), and bathtub heat exchanger (2) and a function (on/off valve) that allows water to flow between the hot water storage tank heat exchanger (4) without reducing the pressure. The expansion mechanism (W2) has the same structure, and the return Hae on-off valve (211
It is provided through.

In Fig. 7, the operating conditions are as follows: First, when the hot water tank heat exchanger (4) is not used to heat or reheat the bathtub groove, the expansion mechanisms 0 on both sides of the heat exchanger (4)
Open the on-off valve (491) of (W2), on-off valve [Co., Ltd.]
is closed, the pump (PJ) of the bathtub unit is operated, and the pump (P) of the hot water tank unit 10 is stopped, and the compressor (1), the bathtub heat exchanger (2), the on-off valve, Hot water tank heat exchanger (4), expansion valve (W2) of expansion mechanism (W2)
Depressurize with c), evaporate with outdoor heat exchanger (3), compressor (1)
When the outdoor heat exchanger +3) is not used, the expansion mechanism (Wt), (W2)
The on-off valves (4ω, - are both closed, the pressure is reduced by the expansion valve (turn) of the compressor (1), the bathtub heat exchanger (2), and the expansion mechanism ae1 compressor (
In the cycle 1), the bathtub groove is heated, reheated, and rapid heating operation is performed.

The heat exchangers that are not used in this way are each expansion mechanism (wl).

(W2) opening/closing valve 9. The heat exchange between the hot water tank heat exchanger (4) and the bathtub heat exchanger (2) is carried out by opening and closing ω as appropriate to simply pass or not allow the refrigerant to pass through.
- Operations such as cooling the bathtub groove, heating the stored hot water, and recovering heat from the remaining hot water in the bathtub groove to the hot water storage tank are performed in the same way as in FIG. 6.

Furthermore, in the series connection of each heat exchanger, a return pipe (1
In the example in which 8 is provided, 6 and 9 are provided, but by providing appropriate outgoing pipes and return pipes on both sides of the heat exchanger (4), the same configuration can be obtained in the example in Fig. 4 and the example in Fig. 5. Nor. Also, the seventh
Expanding the idea in the figure, it is possible to connect eight heat exchangers in series, the bathtub heat exchanger (2), the hot water tank heat exchanger (4), and the outdoor heat exchanger (3), in a different order from the above. Needless to say.

In addition, in the examples shown in FIGS. 4 to 6, each expansion mechanism is arranged so as to reduce the pressure on the side entering each heat exchanger, but it is arranged so that the pressure is reduced on the side exiting from each heat exchanger. Needless to say, the same effect can be achieved even if the expansion mechanism is arranged in any direction, and various examples can be considered as the expansion mechanism.Furthermore, if an electric expansion valve with a pressure reduction function and an opening/closing function is used, the configuration will be even better. Simplified.

Next, as for the valve switching mechanism, in the examples shown in Figs. The configuration is simpler. Figure 8 shows this.This Figure 8 shows an example of a design change of the valve switching mechanism (x4) of the M6 example, and includes a four-way valve (SVl), a three-way valve (SV2), and an electromagnetic type. It goes without saying that on-off valves (SV3) and (8'%'4) are provided, and by controlling each 'JP, an operating state similar to that shown in FIG. 6 can be obtained. In other figures 8 to 5, the same operating conditions can be obtained by appropriately installing four-way valves and three-way valves.The point is that the valve switching mechanism is controlled by valves and piping that become outgoing or incoming pipes by valve control. Needless to say, it is better to configure it.

In addition, although the examples in FIGS. 1 and 2 show the bathtub heat exchanger (2) housed in the auxiliary hot water storage tank (5), a double pipe heat exchanger or a bath pH heat exchanger There are various methods such as storing (2) in a bathtub (6).

In addition to the above, design changes of type 4 can be considered, but they are included in the scope of the present invention as long as they do not depart from the purpose of the present invention.

The example of the present invention is as described above, and in the invention M1, when the temperature of the hot water in the bathtub is too high, it is possible to perform a cooling operation that releases heat to the air without increasing the water level. When heating is required, it is possible to perform operations such as reheating without heating using air as a heat source or adding hot water.Furthermore, it is possible to defrost the outdoor heat exchanger and use this heat if there is residual hot water in the bathtub. When defrosting operation is possible using the power and resource saving and effective use of energy, and according to the invention of Kiyo No. 1, the invention of No. 2 to No. 4 can be carried out without changing the basic circuit as explained above. It is characterized by a configuration in which the device can be easily added or made with only a few changes.

In the second invention, in addition to the tenth invention, the bathtub groove is cooled by releasing heat to the hot water storage tank, the bathtub groove is used as a heat source to heat the stored hot water, and when there is residual hot water in the bathtub, This heat can be recovered to the stored hot water, and by heating the stored hot water, it can be used as a hot water supply device for bathtubs, kitchens, etc.

Further, in the eighth invention, in addition to the second invention, there is a rapid heating operation of the bathtub groove using hot water in the hot water storage tank as a heat source, a heating operation of the stored hot water seed hot water using air as a heat source, and a heating operation using the heat of the hot water storage tank. Rapid defrost operation of the outdoor heat exchanger becomes possible.

Further, in the fourth invention, the cooling operation of the bathtub groove that releases heat to the air and the defrosting of the outdoor heat exchanger using the hot water storage tank #8 are not possible, but are possible in the eighth invention.

As described above, the present invention provides remarkable practical effects, such as making it possible to perform multi-purpose operation for bathtub grooves at a low total cost by effectively utilizing energy while conserving resources and energy.

[Brief explanation of drawings]

FIG. 1 is a schematic layout diagram of each device forming the first basic form of the present invention, FIG. 2 is a schematic layout diagram of each device forming the second basic form of the present invention, and FIGS. Examples of the refrigerant circuit configuration of each of the first to fourth inventions, FIGS. 7 and 8 are design changes from FIG. FIG. 3 is a diagram showing the configuration. 25 - G... Compressor, 2... Bathtub heat exchanger, 8... Outdoor heat exchanger, 4... Hot water storage m heat exchanger, Xl-X4...
Valve switching mechanism, Yl, Y2, zl''-Z3, Wl, w2m Expansion mechanism Patent applicant Daikin Industries, Ltd. Agent Patent attorney Ryuzo Kagawa 26-Continued from page 1 ■Int, C1,' Identification symbol Internal organization Number // F
25 B 13100 Z -6934-3L■ Departure
Author: Kiyoshi Furuya 100 @ Chi-no-2, Otaniga Factory, Okamoto-cho, Kusatsu City Shigeru C, C-, Daikin Industries, Ltd.

Claims (1)

[Claims] 11> The compressor (1) is provided with a valve on the n-'f: n- side of each of the bathtub heat exchangers (2,) and the outdoor heat exchanger (3). The pipes are connected via a valve switching mechanism (Xl) with each pipe of each heat exchanger that becomes an outgoing pipe or a returning pipe by the valve control, and the other side of each heat exchanger is connected to the pipe of each heat exchanger that becomes an outgoing pipe or a returning pipe. A heat pump type bathtub water heating and cooling device connected through expansion mechanisms (Yl) and (Y2). (Smell) The compressor (1) is connected to the n- side of each of the B heat exchangers, the bathtub heat exchanger (2), the outdoor heat exchanger (3), and the hot water tank heat exchanger (4), with a valve. Each pipe of the bathtub heat exchanger (2) and the outdoor heat exchanger (3) becomes an outgoing pipe or a returning pipe by controlling the valve, and the hot water tank heat exchanger (4) becomes an outgoing pipe by controlling the valve. ) piping and a valve switching mechanism (
x2), and the other side of each of the eight heat exchangers is connected via piping through each expander* (Zl), (Z2) + (Za) for each of the eight heat exchangers. A pump-type bathtub water heating and cooling device. 13) The compressor (1) has n-side plates and valves for each of the eight heat exchangers: the bathtub heat exchanger (2), the outdoor heat exchanger (3), and the hot water tank heat exchanger (4). The pipes of the eight heat exchangers are connected to each other via a valve switching mechanism (Xs), which is provided with the pipes of the eight heat exchangers that become outgoing pipes or returning pipes according to the valve control.
on the other side of each of the eight heat exchangers, each expander*(Zl), (Zl) for each of the eight heat exchangers. (z3) Heat pump type % type % (4) Compressor (1), bathtub heat exchanger (2), outdoor heat exchanger +3) and hot water tank heat exchanger (4) The n- side of each of the eight heat exchangers is connected to a valve and each piping with the bathtub heat exchanger (2) and the hot water storage tank heat exchanger (4), which become outgoing or incoming pipes by controlling the valves. and the piping of the outdoor heat exchanger (3) which becomes a return pipe under the control of the valve, and the piping is connected to each other via the next valve switching mechanism (x4), and the other side of each of the eight heat exchangers is connected to the other side of each of the eight heat exchangers, A heat pump type bathtub water heating and cooling device which is connected via piping through each of the expansion mechanisms (Zl), (Z2), and (Za) for each of the eight heat exchangers.