JP2960805B2 - Regenerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption-type cold / hot storage system comprising a dilute solution introduction passage for introducing a dilute solution into a vessel, and a gas-liquid separator at a regenerator outlet from which a regenerated regenerate solution is discharged. It relates to a regenerator of a water machine.

[0002]

2. Description of the Related Art In a regenerator, a dilute solution is introduced into a regenerator through a dilute solution introduction path, and a heating / boiling operation as a concentration operation of the dilute solution is performed in the regenerator. Then, the generated vapor and concentrated solution are transferred to a gas-liquid separator provided at the outlet of the regenerator, where they undergo a separation operation and are sent to subsequent devices. By the way, the heating operation of the dilute solution in such a regenerator has hitherto been performed by an apparatus system having a furnace tube configuration.

[0003]

However, in this configuration, since the furnace tube type is employed, the amount of liquid retained is large, the size of the equipment cannot be reduced, the absorption refrigerator is slow to start, and the weight of the equipment is heavy. There were problems such as becoming. As a result, it was difficult to reduce the size and weight of the entire absorption chiller / heater due to the regenerator factors. Therefore, an object of the present invention is to provide a regenerator capable of reducing the size and weight of an absorption chiller / heater and shortening the rise time thereof.

[0004]

To achieve this object, a regenerator according to the present invention is characterized by a heating / boiling system for heating and boiling the dilute solution in the regenerator by a once-through system. Provide a communication return path through which the solution separated by the liquid separator is led from the gas-liquid separator to the dilute solution introduction path, and prevent the solution from flowing from the dilute solution introduction path to the gas-liquid separator in this communication return path. To have a check valve
The operation and effect are as follows.

[0005]

In other words, in the regenerator of the present invention, the heating and boiling of the dilute solution are performed by a once-through system. That is, for example, in the regenerator, a coiled tube provided with a heating means outside is arranged, and the dilute solution is heated and boiled while flowing through the coiled tube from the lower part to the upper part,
It is a mixed state of the concentrated solution and the vapor. Then, the gas is sent to a gas-liquid separator provided at the outlet of the regenerator, where separation is performed. Here, in a normal operation state in which the dilute solution is constantly supplied to the regenerator, the check valve of the present application is kept closed, and the vapor and the concentrated solution are respectively supplied to a predetermined device (double-effect absorption). In a chilled water heater, the steam is transferred to a low temperature regenerator and the solution to a high temperature solution heat exchanger. On the other hand, if the supply of the dilute solution to the regenerator is interrupted for some reason, the check valve provided in the dilute solution introduction path is opened, and the dilute solution introduction path is connected from the gas-liquid separator via the communication return path. Solution is supplied to the
The problem of empty cooking of the regenerator is avoided.

[0006]

Therefore, in the regenerator of this configuration,
Since the heating and concentration of the dilute solution is performed by the once-through method, the regenerator itself can be reduced in size, and the absorption type chiller / heater employing the regenerator can be reduced in size and weight.
As a result, it is possible to reduce material costs, reduce costs, and the like in the absorption chiller / heater. Further, since the flow-through method is adopted, the rise time of the regenerator is shortened (what conventionally took 30 minutes is started in about 10 minutes). In addition, it is possible to reduce costs by reducing the amount of retained liquid (lithium bromide solution 2,000 yen / kg).

[0007]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a system configuration of an absorption type chiller / heater 1 employing the regenerator of the present invention, and FIGS. 2 and 3 show a plan view and a cross-sectional view of a high temperature regenerator 2. The schematic configuration of the absorption type water heater / heater 1 will be described with reference to FIG. The absorption chiller / heater 1 is a so-called double-effect absorption chiller / heater. An evaporator 6 for performing heat exchange with a cooling system, an absorber 7 for absorbing water vapor from the evaporator 6 into an absorbent, a solution circulation pump 8, a low-temperature solution heat exchanger 9, a high-temperature solution heat exchanger 10, and the like are provided. It is configured. The high-temperature regenerator 2 has a gas-liquid separator 11 at the regenerator outlet 2a, and has a so-called once-through heating / boiling system for dilute solution regeneration. This heating
First, a schematic configuration of the boiling system will be described. This involves winding a dilute solution passage tube 12 into a coil as shown in FIGS. 1 and 3, attaching fins 13 to the tube 12, and boiling while the dilute solution flows through the tube 12 from bottom to top. It is configured as follows.

Further, the gas-liquid separator 11 has an inflow check valve 11b in the liquid inflow section 11a, and has a level switch 11c therein. The vapor side 11d is connected to the vapor path 3a of the low temperature regenerator, and the solution side 11e is connected via the high temperature solution heat exchanger 10 to the solution section 3b of the low temperature regenerator. The gas-liquid separator 1 is provided between the gas-liquid separator 11 and the dilute solution introduction path 14.
A communication return path 15 through which the solution separated by 1 is guided to the dilute solution introduction path 14 is provided, and the solution is further transmitted from the dilute solution introduction path 14 to the gas-liquid separator 11 via the communication return path 15. A check valve 16 is provided to prevent flow.

Hereinafter, a high-temperature regenerator 2 will be described with reference to FIGS.
Will be described in more detail. This means that the coil-shaped passage tube 12 into which the dilute solution flows in and out flows through the combustion section 17.
, And a plurality of fins 13 are provided in the passage tube 12. The air a required for combustion is sucked from outside the machine by the air fan 18, reaches the burner 20 via the machine outermost peripheral portion 19, is burned and heated in the combustion chamber 17, and is heated in the peripheral portion of the passage pipe 12. After heat exchange, the gas is exhausted from the exhaust path 21 (A-B-C-D-
E).

Hereinafter, the operating state of the regenerator according to the present invention will be described. In the regenerator, the dilute solution is heated while flowing through the inside of the passage tube 12 from the lower portion to the upper portion, and boils to form steam and
It becomes a thick solution. Then, the vapor and the boiling liquid are transferred to the gas-liquid separator 11 in a mixed state. In a normal operation state in which the dilute solution is sequentially supplied to the high-temperature regenerator 2 by the solution circulation pump 8, the check valve 16 is kept closed. The solution is processed by the regenerator and sent to the gas-liquid separator 11, where the vapor and the concentrated solution are respectively supplied to a predetermined device (in a double-effect absorption chiller / heater, the steam passes through the steam passage 3a of the low-temperature regenerator). , The solution is transferred to the hot solution heat exchanger 10). On the other hand, if the supply of the dilute solution to the high-temperature regenerator 2 is interrupted for some reason, the check valve 16 provided in the dilute solution introduction path 14 is opened, and the communication return path 15 from the gas-liquid separator 11 is disconnected. The supply of the solution to the dilute solution introduction path 14 is performed via this, and the problem of the idle cooking of the high-temperature regenerator 2 is avoided.

[Alternative Embodiment] In the above-described embodiment, an example is shown in which the regenerator of the present invention is applied to the high-temperature regenerator 2 of the double effect absorption chiller / heater. Can also be used for absorption type water heaters.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a diagram showing the configuration of an absorption chiller / heater equipped with a regenerator according to the present application.

FIG. 2 is a plan view of a regenerator.

FIG. 3 is a sectional view of a regenerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Absorption chiller / heater 2 Regenerator 2a Regenerator outlet 14 Dilute solution introduction path 15 Communication return path 16 Check valve

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F25B 15/00 303 F25B 33/00

Claims (1)

(57) [Claims] A dilute solution introduction path (14) for introducing a dilute solution into a vessel, and a gas-liquid separator (11) at a regenerator outlet (2a) from which a regenerated regenerate solution is led out. A regenerator for an absorption chiller / heater (1), comprising a heating / boiling system for heating and boiling the dilute solution in the regenerator in a flow-through system, and separating the dilute solution with the gas-liquid separator (11). A communication return path (15) is provided for guiding the discharged solution from the gas-liquid separator (11) to the dilute solution introduction path (14), and the communication return path (15) is provided.
The gas-liquid separator (1) from the dilute solution introduction path (14).
A regenerator with a check valve (16) that prevents the solution from advancing to 1).