JP2533932B2 - Air-cooled absorption type water heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air-cooled absorption type chiller-heater, and in particular, it is switched between three cycles of cooling in summer, direct heating in winter, and heat pump heating in winter. The present invention relates to an air-cooled absorption type cold / hot water machine having a pipeline switching valve suitable for.

[Prior Art] A conventional air-cooled absorption type chiller-heater is disclosed in, for example, Japanese Patent Laid-Open No. 62-21.
As described in 8771 publication, during heating, the solution pipe line that reciprocates the regenerator is shut off, and the refrigerant vapor system going to the condenser is shut off, and the heated steam from the regenerator is flown to the water heater, It was a cycle of heating and heating the heat medium of the indoor unit.

[Problems to be Solved by the Invention] Heating in the air-cooled absorption type chiller-heater of the above-mentioned conventional technology is
This is so-called direct heating, in which a water heater is provided and heat is exchanged with hot water circulating through the indoor unit on the load side, for example, an indoor fan coil unit, but energy saving has not been sufficiently taken into consideration.

If energy-saving operation is performed by a heat pump cycle, the heat pump cannot operate when the outside air temperature is 0 ° C. or less, and direct heating is indispensable.

The present invention has been made to solve the above-mentioned problems in the conventional art, and three cycles of cooling, direct heating, and heat pump heating are switched by operating a switching valve without newly adding a main component. Accordingly, it is an object of the present invention to provide an air-cooled absorption chiller-heater capable of stabilizing the cooling operation, saving energy in the heating operation by the heat pump cycle, and selecting the direct heating operation at an outside temperature of 0 ° C or less. It is what

[Means for Solving the Problems] In order to achieve the above object, a basic configuration of an air-cooled absorption type chiller-heater according to the present invention is a regenerator that heats and concentrates a dilute solution to separate a refrigerant vapor. , An air-cooled condenser for liquefying the refrigerant vapor generated in this regenerator, and an evaporator for evaporating the refrigerant by exchanging heat between the refrigerant liquid and the heat medium on the load side,
An air-cooled absorber that includes a refrigerant vapor generated in this evaporator, which absorbs the concentrated solution sent from the regenerator, and a solution piping system and a refrigerant piping system that operatively connect these devices. In the hot and cold water heater, the heat medium circulation system that supplies the heat medium to the load side is incorporated, and the heat medium heat exchanger that functions as an evaporator during cooling is connected to this heat medium heat exchanger via a refrigerant conduit, An air-cooling container that functions as an air-cooling absorber during cooling, a heat medium container that circulates a heat medium that returns from the load side, a pipe line that is provided in the heat medium circulation system and that bypasses the heat medium container, and a switching of the bypass pipe line A valve, a refrigerant spray pipe connected to the air cooling container and equipped with a refrigerant spray pump, a solution circulation system connected to the heat medium heat exchanger and the regenerator in a reciprocating manner, and the air cooling container during cooling. Melt from Switching of the dilute solution piping system provided between the air-cooled container and the solution pump so as to communicate with the regenerator through the pump and communicate with the regenerator through the solution pump from the heat medium heat exchanger during heat pump type heating A valve, and leads from the regenerator through the solution heat exchanger to the air-cooled container during cooling, so as to communicate with the heat medium heat exchanger through the solution heat exchanger from the regenerator during heat pump type heating, With a switching valve of the concentrated solution piping system provided in the spray pipe immediately before entering the air-cooled container of the concentrated solution piping system leading to the solution spray unit, by switching the switching valves, the heat medium heat exchanger is cooled. Evaporator, as an absorber during heat pump heating, the air-cooled container as an air-cooling absorber during cooling, as an air-cooling evaporator during heat pump heating, and as a heat medium container during cooling during heat pump heating As a condenser,
The heat pump cycle is configured so that each can function.

In addition, in the above description, a switching valve is provided in the middle of the pipeline for flowing the steam separated from the regenerator during cooling to the air-cooled condenser, and one of them is connected to the condenser of the heat pump cycle related to the heat medium container. A conduit for returning condensed condensed liquid from the condenser of the heat pump cycle to the regenerator during heating, and a conduit for returning to the container functioning as an air-cooling evaporator during heat-pump heating and an air-cooling absorber during cooling. A switching valve for switching between and is provided, and a shutoff valve is provided in each of the solution pipes that reciprocate between the air-cooled absorber and the regenerator during cooling, and the refrigerant is supplied only to the system connecting the condenser and the regenerator of the heat pump cycle. It is a cycle that circulates and heats.

[Operation] The operation of the above-described basic configuration will be described with reference to the reference numerals of FIGS. 1 to 3 described later in the embodiment.

FIG. 1 shows a cooling cycle of an air-cooled absorption type chiller / heater.

The refrigerant evaporated in the heat medium heat exchanger (evaporator during cooling) 1 is absorbed by the absorbing liquid in the air-cooled container (air-cooled absorber during cooling) 2, and is regenerated by the solution pump 7 via the solution heat exchanger 5. Sent to 4. The solution heated and concentrated in the regenerator 4 returns to the air-cooled container (air-cooled absorber) 2 via the heat exchanger 5.

The refrigerant that has been heated and separated by the regenerator 4 is cooled and condensed by the air-cooled condenser 3 and returns to the evaporator 1. The refrigerant again exchanges heat with the heat medium in the heat medium circulation system to evaporate and cools the room by the indoor fan coil unit 6 on the load side.

 FIG. 2 shows a direct heating cycle.

The refrigerant vapor heated in the regenerator 4 is sent to the heat medium container (water heater) 16 via the switching valve 12, where the heat medium from the indoor fan coil unit 6 is heated, and the refrigerant is condensed and regenerated. Return to container 4. At this time, the solution pump 7 and the refrigerant spray pump 8 are stopped, the solution cutoff valves 13 and 14 are fully closed, and the regenerator 4, the air-cooled condenser 3, the air-cooled container (air-cooled absorber) 2, the heat medium heat exchanger ( It is cut off from the evaporator 1.

In the present invention, a heat pump cycle as shown in FIG. 3 is configured in the air-cooling absorption type chiller-heater that constitutes such a cooling and heating cycle.

That is, the switching valves 10 and 11 are switched, the air cooling container (air cooling absorber during cooling) 2 is used as an air cooling evaporator, and the heat medium heat exchanger (evaporator during cooling) 1 is used as an absorber. Further, the air-cooled condenser 3 of FIG. 1 is closed by the switching valve 12,
The heat medium container (water heater for cooling) 16 is used as a condenser of the heat pump cycle. The refrigerant condensed here is returned to the air-cooled container (evaporator in FIG. 3) 2 by the switching valve 15. The heat medium thus heated by the heat medium container (condenser) 16 and the heat medium heat exchanger (absorber) 1 heats the room by the indoor fan coil unit 6.

[Embodiment] Each embodiment of the present invention will be described below with reference to FIGS. 1 to 12.

First, an embodiment having a basic configuration (first invention) of the present invention will be described with reference to FIGS.

FIG. 1 is a cooling cycle system diagram of an air-cooled absorption type chiller-heater according to an embodiment of the present invention, FIG. 2 is a direct heating cycle system diagram of the apparatus of FIG. 1, and FIG. 3 is FIG. It is a heat pump cycle system diagram of the apparatus of. In each figure, the same parts are designated by the same reference numerals. The arrow indicates the direction of the flow of the solution or the refrigerant, and the black side of the switching valve indicates closed.

In the figure, reference numeral 1 is a heat medium heat exchanger, which functions as an evaporator during cooling and as an absorber during heat pump heating. Two
Is an air-cooled container, which is connected to the heat medium heat exchanger 1 through a conduit 37 and functions as an air-cooled absorber during cooling and as an air-cooled evaporator during heat pump heating. 3 is an air-cooled condenser, 4 is a regenerator, and 4a is a heating furnace communicating with an external heat source. 5 is a solution heat exchanger, 6 is an indoor fan coil unit related to the indoor unit on the load side, 7 is a solution pump, 8 is a refrigerant spray pump provided in the refrigerant spray pipe 17, and 9 is a heat medium circulation system. It is a cold / hot water pump provided.

Reference numeral 10 is a switching valve of the concentrated solution piping system. The switching valve 10 is the air cooling container of the concentrated solution piping 18B leading from the regenerator 4 to the solution spray section of the air cooling container (air cooling absorber) 2 through the heat exchanger 5. (Air-cooled absorber) It is installed in the spray pipe 18C immediately before entering the (2). The other side of the switching valve 10 is connected to a pipe line 19B leading to the heat medium heat exchanger (evaporator) 1.

Reference numeral 11 is a switching valve of a dilute solution piping system, and this switching valve 11 is a regenerator 4 from an air cooling container (air cooling absorber) 2 via a solution pump 7.
The air-cooled container (air-cooled absorber) of the diluted solution pipe 18A leading to
2 and the solution pump 7. The other side of the switching valve 11 is connected to a pipe line 19A leading to the heat medium heat exchanger (evaporator) 1.

Reference numeral 13 is a solution cutoff valve provided in the concentrated solution pipe 18B coming out of the regenerator 4, and 14 is a solution cutoff valve provided in the dilute solution pipe 18A entering the regenerator 4.

Further, 12 is a switching valve, and this switching valve 12 is provided in a refrigerant vapor pipe 20 for flowing the vapor heated and separated in the regenerator 4 to the air-cooled condenser. The other of the switching valves 12 is connected to a refrigerant vapor pipe 21 leading to a heat medium container (water heater) 16.

Furthermore, 15 is a switching valve, and this switching valve 15 is a heat medium container.
The refrigerant pipe 35 communicating from 16 to the regenerator 4 and the refrigerant pipe 36 communicating from the heat medium container 16 to the air cooling container 2 are switched.

Reference numeral 16 denotes a heat medium container provided in the heat medium return pipe 24 of the heat medium circulation system, which functions as a water heater during cooling and a condenser during heat pump heating.

A switching valve 22 is provided in the heating medium return pipe 24 of the heating medium circulation system, and the other is connected to the heating medium bypass pipe 25. Further, 23 is a switching valve, and this switching valve 23 is provided in the heat medium supply pipe 26 of the heat medium circulation system, and the other is connected to the heat medium bypass pipe 27.

 The operation of the air-cooled absorption type chiller-heater of this embodiment will be described.

Here, the solution of the absorbent is a thylium bromide aqueous solution, the refrigerant is water, and the heat medium of the heat medium circulation system is water.

At the time of cooling in the summer shown in FIG. 1, the switching valve 10 is provided with the conduit 19B.
Side, the switching valve 11 closes the pipeline 19A side, and the switching valve 12 closes the refrigerant vapor pipe 21 side. Also, the solution shutoff valve 1
3, 14 are fully opened, and the switching valve 15 is closed on the refrigerant pipe lines 35, 36 side. In the heat medium circulation system, the switching valves 22 and 23 open the heat medium bypass pipe lines 25 and 27 side. The solution pump 7 operates and the refrigerant spray pump 8 stops.

In the cooling cycle of FIG. 1, the refrigerant evaporated in the heat medium heat exchanger (evaporator) 1 is sent to the air-cooled container (air-cooled absorber) 2 via the conduit 37 and is removed by the spray pipe 18C ( The absorbing solution) absorbs the diluted solution, and the diluted solution is sent to the regenerator 4 by the solution pump 7 via the diluted solution pipe 18A and the solution heat exchanger 5. The solution heated and concentrated in the regenerator 4 returns to the air-cooled container (air-cooled absorber) 2 from the spray pipe 18C via the concentrated solution pipe 18B and the solution heat exchanger 5.

On the other hand, the refrigerant that has been heated and separated in the regenerator 4 enters the air-cooled condenser 3 through the refrigerant vapor pipe 20, is air-cooled and condensed there, and the condensate passes through the pipe line 28 and the heat medium heat exchanger (evaporator). ) 1
Return to. Here, the refrigerant exchanges heat with the heat medium in the heat medium circulation system and evaporates again.

The heat medium (water) enters the heat medium heat exchanger (evaporator) 1 from the heat medium bypass pipe 25, is flash-cooled by the refrigerant, and passes through the heat medium bypass pipe 27 and the heat medium supply pipe 26 to produce an indoor fan. It is sent to the coil unit 6 to cool the room.

Next, during direct heating in winter as shown in Fig. 2, the switching valve 1
0 and 11 are fully opened, the switching valve 12 is closed on the air-cooled condenser 3 side, the solution shutoff valves 13 and 14 are fully closed, and the switching valve 15 is closed on the refrigerant pipe line 36 side. In the heat medium circulation system, the switching valves 22 and 23 close the heat medium bypass pipe lines 25 and 27.

Since the solution pump 7 and the refrigerant spray pump 8 are stopped and the solution shutoff valves 13 and 14 are fully closed as described above, the regenerator 4, the air-cooled condenser 3, the air-cooled container (air-cooled absorber) 2, the heat medium It is cut off from the heat exchanger (evaporator) 1.

The refrigerant vapor heated by the regenerator 4 is sent to the heat medium container (water heater) 16 via the switching valve 12 and the refrigerant vapor pipe 21. Here, the refrigerant vapor is the indoor fan coil unit 6
The heat medium (water) that has returned from the heat exchanger via the heat medium return pipe 24 is heated, and condensed from the refrigerant itself through the refrigerant pipe 35 to regenerator 4.
Return to. On the other hand, the heated heat medium is sent to the indoor fan coil unit 6 via the heat medium supply pipe line 26 to heat the room.

Next, at the time of heat pump heating shown in FIG. 3, the switching valves 10 and 11 close the air cooling container 2 side, the switching valve 12 closes the air cooling condenser 3 side, the solution shutoff valves 13 and 14 are fully closed, and switching is performed again. Valve 15
Closes the refrigerant line 35 side. In the heat medium circulation system, switching valve 2
2 and 23 close the heat medium bypass pipe lines 25 and 27. The solution pump 7 and the refrigerant spray pump 8 are operated.

At the time of heat pump type heating shown in FIG. 3, the air cooling container (air cooling absorber during cooling) 2 functions as an air cooling evaporator, and the heat medium heat exchanger (evaporator during cooling) 1 functions as an absorber. The air-cooled condenser 3 during cooling is closed by a switching valve 12, and the heat medium container (water heater during cooling) 16 functions as a condenser of the heat pump cycle.

The refrigerant evaporated in the air-cooled container (air-cooled evaporator) 2 is supplied to the conduit 37.
Is transferred to the heat medium heat exchanger (absorber) 1 and is absorbed by the solution supplied and removed by the conduit 19B, and the diluted solution is transferred from the conduit 19A to the diluting solution pipe 18A by the switching valve 11 and the solution pump 7. , Via the solution heat exchanger 5 to the regenerator 4. The solution heated and concentrated in the regenerator 4 returns to the heat medium heat exchanger (absorber) 1 via the concentrated solution pipe 18B and the solution heat exchanger 5 and the conduit 19B via the switching valve 10.

On the other hand, the refrigerant that has been heated and separated by the regenerator 4 enters the heat medium container (condenser) 16 through the switching valve 12 and the refrigerant vapor pipe 21, and returns to the heat medium return pipe 24 where the heat returned. The medium is heated, condensed and liquefied from the refrigerant itself, and returned to the air-cooled container (air-cooled evaporator) 2 through the refrigerant pipe 36.

The heat medium (water) in the heat medium circulation system is the heat medium container (condenser).
It is heated by the refrigerant vapor in 16 and is heated by the absorbing solution in the heat medium heat exchanger (absorber) 1 and is sent to the indoor fan coil unit 6 via the heat medium supply pipeline 26 to heat the room.

In this cycle, the air-cooled container (air-cooled evaporator) 2
In order to recirculate the above refrigerant, the refrigerant spray pump 8 of the refrigerant spray pipe 17 is operated.

According to this embodiment, in the air-cooled absorption refrigerator, three cycles of cooling, direct heating, and heat pump heating can be switched by operating the switching valve without newly adding main constituent elements. As a result, it is possible to selectively operate the air-cooled absorption type refrigerator and the heat pump cycle for energy saving and the operation at the outside air temperature of 0 ° C. or less during direct heating.

Next, another embodiment (second invention) of the present invention will be described with reference to FIGS. 4 to 6.

FIG. 4 is a cooling cycle system diagram of an air-cooling absorption type chiller / heater according to another embodiment of the present invention, FIG. 5 is a direct heating cycle system diagram of the apparatus of FIG. 4, and FIG. It is a heat pump cycle system diagram of the apparatus of the figure. In FIGS. 4, 5 and 6, the same reference numerals as those in FIGS. 1, 2 and 3 above are the same parts, and thus the description thereof will be omitted.

The embodiment shown in FIGS. 4, 5 and 6 is different from the embodiment shown in FIGS. 1, 2 and 3 above when the heat medium heat exchanger (evaporator) 1 is used as a shell during cooling in FIG. This is an AND-tube system, in which heat is exchanged inside and outside the tube, and the heat medium in the heat medium return pipe 24 is cooled by latent heat of vaporization. Therefore, the switching valves 22 and 2 in the heat medium circulation system in the cycle of the direct heating of the embodiment shown in FIG. 2 and the heat pump type heating of the embodiment shown in FIG.
3 becomes unnecessary in the cycle of the direct heating of the embodiment shown in FIG. 5 and the heat pump type heating of the embodiment shown in FIG.

That is, in the second invention, a switching valve is provided in the heat medium circulation system,
It does not have a heat medium bypass line. Heat medium container (water heater for cooling, condenser for heat pump heating)
The shell-and-tube heat exchanger is adopted for both 16 and the heat medium heat exchanger (evaporator during cooling, absorber during heat pump heating) 1A.

Here, when the load during cooling shown in Fig. 4 is small, the refrigerant that could not be completely evaporated in the heat medium heat exchanger (evaporator) 1A flows to the air cooling container (air cooling absorber) 2 as a refrigerant liquid and is re-cooled. Circulate.

According to the embodiments of FIGS. 4, 5 and 6, the same effect as that of the previous embodiment is expected.

Next, still another embodiment of the present invention (a modification of the second invention) will be described with reference to FIGS. 7 to 9.

FIG. 7 is a cooling cycle system diagram of an air-cooling absorption type chiller-heater according to still another embodiment of the present invention, FIG. 8 is a direct heating cycle system diagram of the apparatus of FIG. 7, and FIG. It is a heat pump cycle system diagram of the apparatus of FIG. In FIGS. 7, 8, and 9, the same reference numerals as those in FIGS. 1, 2, and 3 or FIGS.

The embodiment of FIGS. 7, 8 and 9 differs from the embodiment of FIGS. 4, 5 and 6 in that the heat medium container (water heater during cooling, condenser during heat pump heating) 16A is a shell and tube type. It is not a heat exchanger.

That is, in the heat medium container (water heater) 16A for direct heating shown in FIG. 8 and the heat medium container (condenser) 16A for heat pump type heating shown in FIG. 9, the heat medium circulation system is the heat medium return pipe line. The refrigerant vapor flowing from the regenerator 4 through the switching valve 12 and the refrigerant vapor pipe 21 is directly cooled and condensed by the heat transfer water (warm water) flowing in 24. On the other hand, the heat medium is heated and flows from the heat medium supply pipe line 26 to the indoor fan coil unit 6 to heat the inside of the room.

In the direct heating shown in FIG.
5. Returning to the regenerator 4 via the refrigerant pipe 35, and in the heat pump heating of FIG. 9, returning to the air cooling container (air cooling evaporator) 2 via the switching valve 15 and the refrigerant pipe 36.

According to the embodiments shown in FIGS. 7, 8 and 9, the same effects as those of the previous embodiments are expected, and the heat medium container (water heater during cooling and direct heating, condenser during heat pump heating) 16A There is an effect peculiar to the present embodiment that it has a simple structure.

Next, another embodiment (third invention) of the present invention will be described.
This will be described with reference to FIGS. 10 to 12.

FIG. 10 is a cooling cycle system diagram of an air-cooled absorption type chiller / heater according to still another embodiment of the present invention, FIG. 11 is a direct heating cycle system diagram of the device of FIG. 10, and FIG. FIG. 10 is a heat pump cycle system diagram of the apparatus in FIG. In FIGS. 10, 11, and 12, the same reference numerals as those in FIGS. 1, 2, and 3 above denote the same parts, and thus the description thereof will be omitted.

The embodiment of FIGS. 10, 11 and 12 differs from the previous embodiments in that the spray circulation passage of the heat medium heat exchanger (evaporator) 1 functioning as an evaporator during cooling shown in FIG. 29, 30 related to and the air-cooling container (air-cooling absorber during cooling) that functions as an air-cooling evaporator during heat pump heating shown in FIG.
The changeover valves 33 and 34 for changing over to the pipe lines 31 and 32 related to the second spray circulation flow path are provided.

At the time of cooling shown in FIG. 10, the switching valves 33 and 34 close the pipe lines 31 and 32 that communicate with the air-cooled container 2. by this,
Even when the load during cooling is small, the refrigerant liquid that could not be completely evaporated in the heat medium heat exchanger (evaporator) 1 is recycled by the refrigerant spray pump 8 via the pipe 29, the switching valves 33, 34, and the pipe 30. Circulating spray. Therefore, unlike the embodiment shown in FIG. 7, the cooling liquid is not sent to the air-cooled absorber as it is, and the cooling efficiency is not lowered.

At the time of direct heating shown in FIG. 11, the switching valves 33, 34 are fully opened, but the solution shutoff valves 13, 14 are the same as in the previous embodiment of FIG.
Is fully closed, the air-cooling condenser 3 side of the switching valve 12 and the air-cooling container 2 side of the switching valve 15 are closed, and the regenerator 4, the air-cooling condenser 3, and the air-cooling container are closed.
2, It is cut off from the heat medium heat exchanger (evaporator) 1.

Therefore, the same effect as that of the embodiment shown in FIG. 2 is expected.

During heat pump type heating shown in Fig. 12, switching valves 33, 3
Reference numeral 4 closes the pipelines 29 and 30 side, and switching valves 10 and 11 close the air cooling container 2 side.

Therefore, as in the previous embodiment of FIG. 3, the refrigerant in the air-cooled container (air-cooled evaporator) 2 is recirculated by the refrigerant spray pump 8 through the pipe 31, the switching valve 33, the switching valve 34, and the pipe 32. It

Thus, according to each of the embodiments shown in FIGS. 10, 11, and 12, the same effect as that of each of the previous embodiments is expected.

[Effects of the Invention] As described above, according to the present invention, three cycles of cooling, direct heating, and heat pump heating can be switched by operating the switching valve without newly adding main constituent elements. As a result, the cooling operation is stabilized, the heating operation is saved by the heat pump cycle, and the outside temperature is 0 ° C.
It is possible to provide an air-cooling absorption type chiller-heater capable of selecting each of the following direct heating operations.

[Brief description of drawings]

FIG. 1 is a cooling cycle system diagram of an air-cooled absorption type chiller-heater according to an embodiment of the present invention, FIG. 2 is a direct heating cycle system diagram of the apparatus of FIG. 1, and FIG. 3 is FIG. 5 is a heat pump cycle system diagram of the apparatus of FIG. 4, and FIG. 4 is a cooling cycle system diagram of an air-cooled absorption type chiller-heater according to another embodiment of the present invention.
FIG. 6 is a direct heating cycle system diagram of the apparatus of FIG. 4, FIG. 6 is a heat pump cycle system diagram of the apparatus of FIG. 4, and FIG.
FIG. 8 is a cooling cycle system diagram of an air-cooled absorption type chiller-heater according to still another embodiment of the present invention, FIG. 8 is a direct heating cycle system diagram of the apparatus of FIG. 7, and FIG. 9 is FIG. 10 is a heat pump cycle system diagram of the apparatus, FIG. 10 is a cooling cycle system diagram of an air-cooled absorption type chiller / heater according to still another embodiment of the present invention, FIG. 11 is a direct heating cycle system of the apparatus of FIG. FIG. 12 is a heat pump cycle system diagram of the apparatus of FIG. 1,1A: Heat medium heat exchanger, 2 ... Air-cooled container, 3 ... Air-cooled condenser, 4 ... Regenerator, 5 ... Solution heat exchanger, 6 ... Indoor fan coil unit, 7 ... Solution Pump, 8 …… Refrigerant spray pump, 10,11,12,15 …… Switching valve, 13,14 ……
Solution shut-off valve, 16, 16A ... Heat medium container, 17 ... Refrigerant spray piping, 18A ... Dilute solution piping, 18B ... Concentrated solution piping, 18
C ... Spray pipe, 19A, 19B ... Pipe line, 20,21 ... Refrigerant vapor pipe, 22,23 ... Switching valve, 24 ... Heat medium return pipe line, 26 ...
… Heat medium supply line, 25,27 …… Heat medium bypass line, 29,30,3
1,32 ... pipe, 33,34 ... switching valve, 35,36 ... refrigerant pipeline,
37 ... conduit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeyoshi Kurosawa 2-26, Kanamemachi, Toshima-ku, Tokyo (72) Inventor Yoshikazu Nagaoka 5-22-4 Kamisoshiya, Setagaya-ku, Tokyo Kamisoshiya Heights 302 (72) Inventor Shinichi Kanno 4-9-4-303 Takawashi, Habikino-shi, Osaka (72) Inventor Sadaju Takemoto 11-8, Toyonencho, Chikusa-ku, Nagoya-shi, Aichi (72) Toshiro Yoshii, 603 Kandachi-cho, Tsuchiura-shi, Ibaraki Address, Hitachi Tsuchiura Plant, Ltd. (72) Inventor, Tamio Shimizu, 603, Kamidate-cho, Tsuchiura-shi, Ibaraki Hitachi Ltd., Tsuchiura Plant

Claims (6)

(57) [Claims] 1. A regenerator that heats and dilutes a dilute solution to separate refrigerant vapor, an air-cooled condenser that liquefies the refrigerant vapor generated in the regenerator, and heat exchange of the refrigerant liquid with a heat medium on the load side. An evaporator that evaporates the refrigerant, an air-cooled absorber that absorbs the refrigerant vapor generated in the evaporator into the concentrated solution sent from the regenerator, and a solution piping system that operatively connects these devices. In an air-cooled absorption chiller-heater equipped with a refrigerant piping system, a heat-medium heat exchanger that functions as an evaporator during cooling and is incorporated into the heat-medium circulation system that supplies the heat medium to the load side, and this heat-medium heat exchange Connected to the cooling system via a refrigerant conduit, an air cooling container that functions as an air cooling absorber during cooling, a heat medium container that circulates the heat medium that returns from the load side, and a heat medium circulation system that is provided and bypasses the heat medium container. Pipe and the viper A switching valve of a gas line, a refrigerant spray pipe that is connected to the air-cooled container and includes a refrigerant spray pump, and a solution circulation system that reciprocally connects the heat medium heat exchanger and the regenerator, Provided between the air-cooled container and the solution pump so as to communicate with the regenerator through the solution pump from the air-cooled container during cooling, and communicate with the regenerator through the solution pump from the heat medium heat exchanger during heat pump type heating. And a switching valve for the diluted solution piping system, which leads from the regenerator to the air-cooled container via the solution heat exchanger during cooling, and from the regenerator to the heat medium heat exchanger during heat pump heating As described above, a concentrated solution piping system switching valve provided in the spray pipe of the concentrated solution piping system leading to the solution spray section of the air-cooled container immediately before entering the air-cooled container is provided. The heat medium heat exchanger is an evaporator during cooling, an absorber during heat pump heating, the air cooling container is an air cooling absorber during cooling, an air cooling evaporator during heat pump heating, and the heat medium container during cooling is heat pump heating. An air-cooled absorption type chiller-heater characterized by having a heat pump cycle configured to function as a condenser at times. 2. A regenerator that heats and concentrates a dilute solution to separate refrigerant vapor, an air-cooled condenser that liquefies the refrigerant vapor generated in this regenerator, and heat exchange of the refrigerant liquid with a heat medium on the load side. An evaporator that evaporates the refrigerant, an air-cooled absorber that absorbs the refrigerant vapor generated in the evaporator into the concentrated solution sent from the regenerator, and a solution piping system that operatively connects these devices. In an air-cooled absorption chiller-heater equipped with a refrigerant piping system, a heat-medium heat exchanger that functions as an evaporator during cooling and is incorporated into the heat-medium circulation system that supplies the heat medium to the load side, and this heat-medium heat exchange Connected to the air conditioner via a refrigerant conduit, an air cooling container that functions as an air cooling absorber during cooling, a heat medium container that circulates a heat medium that returns from the load side, and a refrigerant that is connected to the air cooling container and that has a refrigerant spray pump. With spray piping, A solution circulation system in which the heat medium heat exchanger and the regenerator are connected so as to be able to reciprocate, and the air is passed from the air cooling container to the regenerator through the solution pump during cooling, and the heat medium heat exchanger during heat pump heating. From the regenerator through the solution heat pump to the regenerator via the solution pump, and a diluting solution pipe switching valve provided between the air-cooling container and the solution pump. The spray pipe immediately before entering the air-cooled container of the concentrated solution piping system that communicates with the solution spray section of the air-cooled container so that the regenerator passes through the solution heat exchanger and the heat-medium heat exchanger during heating. And a switching valve of a concentrated solution piping system provided in, by switching each switching valve, the heat medium heat exchanger is an evaporator during cooling, as an absorber during heat pump heating, the air-cooled container. An air-cooled absorption type cold / hot water characterized in that a heat pump cycle is configured to function as an air-cooled absorber during cooling, an air-cooled evaporator during heat pump heating, and a heat medium container during cooling as a condenser during heat pump heating. Machine. 3. A regenerator that heats and dilutes a dilute solution to separate refrigerant vapor, an air-cooled condenser that liquefies the refrigerant vapor generated in this regenerator, and heat exchange of the refrigerant liquid with a heat medium on the load side. An evaporator that evaporates the refrigerant, an air-cooled absorber that absorbs the refrigerant vapor generated in the evaporator into the concentrated solution sent from the regenerator, and a solution piping system that operatively connects these devices. In an air-cooled absorption chiller-heater equipped with a refrigerant piping system, a heat-medium heat exchanger that functions as an evaporator during cooling and is incorporated into the heat-medium circulation system that supplies the heat medium to the load side, and this heat-medium heat exchange Connected to the air conditioner via a refrigerant conduit, an air cooling container that functions as an air cooling absorber during cooling, a heat medium container that circulates a heat medium that returns from the load side, and a refrigerant that is connected to the air cooling container and that has a refrigerant spray pump. With spray piping, A solution circulation system in which the heat medium heat exchanger and the regenerator are connected so as to be able to reciprocate, and the air is passed from the air cooling container to the regenerator through the solution pump during cooling, and the heat medium heat exchanger during heat pump heating. From the regenerator through the solution heat pump to the regenerator via the solution pump, and a diluting solution pipe switching valve provided between the air-cooling container and the solution pump. The spray pipe immediately before entering the air-cooled container of the concentrated solution piping system that communicates with the solution spray section of the air-cooled container so that the regenerator passes through the solution heat exchanger and the heat-medium heat exchanger during heating. A switching valve for the concentrated solution piping system provided in, a spray circulation channel for the heat medium heat exchanger, and a switching valve for switching the spray circulation channel for the air-cooled container, each switching By switching, the heat medium heat exchanger is an evaporator during cooling, as an absorber during heat pump heating, the air cooling container is an air cooling absorber during cooling, an air cooling evaporator during heat pump heating, and the heat medium container during cooling is Heat-pump type An air-cooled absorption type chiller-heater that has a heat pump cycle configured to function as a condenser during heating. 4. A switching valve according to any one of claims 1 to 3, wherein a switching valve is provided in the middle of a pipeline for flowing the steam separated from the regenerator to the air-cooled condenser during cooling. , A pipe for returning the condensed refrigerant liquid from the condenser of the heat pump cycle to the regenerator at the time of heating, as well as being connected to the pipe leading to the condenser of the heat pump cycle related to the heat medium container, and an air cooling absorber at the time of cooling A switching valve that switches between a pipe returning to a container functioning as an air-cooling evaporator during heating is provided, and a shut-off valve is provided in each solution pipe that reciprocates between the air-cooling absorber and the regenerator during cooling, and the heat pump cycle An air-cooled absorption chiller-heater characterized by comprising a cycle in which a refrigerant is circulated only in a system connecting a condenser and a regenerator to heat the same. 5. The heat medium heat exchanger according to any one of claims 1 to 3, which functions as an evaporator during cooling, and heat for circulating a heat medium returned from an indoor unit on the load side. The medium container is an air-cooled absorption type chiller-heater characterized by comprising a shell-and-tube heat exchanger. 6. The heat medium container according to claim 1, wherein a heat medium container for circulating a heat medium returned from the indoor unit on the load side is circulated through a switching valve at the time of heating with a heat pump. An air-cooled absorption type chiller-heater characterized in that it functions as a condenser that directly cools and condenses the refrigerant vapor flowing from the reactor.