KR100931462B1 - Absorption Refrigeration Unit - Google Patents

Abstract

Provided is an absorption refrigeration apparatus configured to increase heating capacity and heating operation of a high temperature regenerator simply and inexpensively.

A plurality of high temperature regenerators 1w · 1 are provided to increase the heating capacity. The absorption liquid 1aw * 1cw and the refrigerant vapor 1bw of the high temperature regenerator 1w of the front end are provided to the high temperature regenerator 1 of the next stage, and are connected in series. The free fall H is set on the liquid surface of the absorption liquid 1aw * 1cw of the high temperature regenerator 1w and the liquid surface of the absorption liquid 1a * 1c of the high temperature regenerator 1. The heating capacity β of the high temperature regenerator 1w is made small, and the heating capacity α of the high temperature regenerator 1 is made large. The range by the proportional control area Y exceeding the front end operation / stop area X of the front end regenerator 1w and the proportional control area exceeding the run / stop control area X of the next stage regenerator 1 ( Supply heating control is performed in series with Y). When the heating amount increase reaches the maximum value of 100% of the heating capacity of the shear regenerator 1w, heating is started by the proportional control region Y of the next stage regenerator 1, and the heating amount of the shear regenerator 1w is started. Is reduced by the heating amount of the next stage operation / stop region X, and then the proportional control region Y of the preceding stage regenerator 1 and the proportional control region Y of the next stage regenerator 1 are supplied in series. Heating control is performed.

Proportional control area, regenerator, supply heating control, high temperature regenerator, run / stop control area

Description

Absorption Refrigeration Unit {ABSORBED REFRIGERATOR}

The present invention is an apparatus for cooling cold water or warming warm water by an absorption type refrigeration function (in the present invention, referred to as an absorption type refrigeration unit), and in particular, an absorption type refrigeration apparatus having a large heat capacity supplied to such a heat load. It is about.

As an absorption type refrigeration function, for example, an absorption type refrigerator apparatus using an absorption liquid such as lithium bromide and a lithium bromide solution in which a refrigerant is mixed with water is well known, and a cold water supply type absorption type which obtains a configuration for cooling cold water by a general heat capacity. As a refrigerator apparatus, the structure (hereinafter, referred to as a first conventional technology) of the absorption type refrigerator apparatus 100 as shown in FIG. 7 is disclosed by the patent document 1 described later.

In addition, in the case of this first prior art configuration, there are no pipelines 18 and 19 and open / close valves V5 and V6 indicated by dotted lines, and there is no (hot water inlet) (hot water outlet), and reference numeral 22a is cold water. It is made of bay.

In addition, in each figure demonstrated below, the part shown with the same code | symbol is a part which has the same function as the part of the same code | symbol demonstrated by all the drawings.

In the configuration of FIG. 7, first, the circulation system of the absorbent liquid will be described based on the low concentration of the absorbent liquid 5a stored at the bottom of the absorber 5, and the absorbent liquid 5a is connected by the pump 13 to the conduit. It enters into the high temperature regenerator 1 via (9), and is stored as an absorption liquid 1a. Since the high temperature regenerator 1 is heated by a heater 31 such as a burner, the refrigerant contained in the absorbent liquid 1a evaporates, and the medium temperature absorbent liquid 1c and the refrigerant vapor 1b that have become a high temperature are evaporated. Are separated.

The heater 31 adjusts and supplies the fuel 31a supplied from the fuel supply port and the air amount from the blower 31b to the flow rate adjustment valve V21, that is, the fuel control valve V21. The igniter 31c is ignited and configured to perform heating.

The high temperature absorbent liquid 1c enters the high temperature side heat exchanger 7 from the pipe line 10, heats the absorber liquid 5a through the pipe line 9, and radiates heat, and after the temperature decreases, the pipe line Via (10), it enters the low temperature regenerator (2). In the low temperature regenerator 2, since the refrigerant vapor 1b sent from the conduit 14 heats the heat radiating tube 2A, the refrigerant contained in the absorbing liquid 1c evaporates to obtain a high temperature. It is separated into a high concentration of absorbing liquid 2a and refrigerant vapor 2c.

The high temperature absorbent liquid 2a enters the low temperature side heat exchanger 6 from the conduit 11, heats the absorbed liquid 5a through the conduit 9, and heats it, and after it has become mid temperature, the conduit 11 It spreads through the absorber 5 as an absorbing liquid 5b. Since the cooling tube 5A in the absorber 5 is cooled by the cooling water 23a supplied from the conduit 23, the scattered absorbing liquid 5b is adjacent when it flows down along the cooling tube 5A. It absorbs the refrigerant vapor 4b which comes in from the evaporator 4, and dilutes, returns to the absorbent liquid 5a whose density | concentration is low at low temperature, and repeats the absorption liquid circulation that one week of absorption liquid is complete | finished.

Next, the circulation system of the coolant will be described based on the coolant vapor 4b entering the absorber 5, and the coolant vapor 4b is dispersed in the absorber 5 as described in the circulation system of the absorbent liquid described above. Is absorbed into the absorbent liquid 5b, enters the absorbent liquid 5a, and becomes the refrigerant vapor 1b in the high temperature regenerator 1. The refrigerant vapor 1b enters the heat radiating tube 2A of the low temperature regenerator 2 via the conduit 14, heats the absorbent liquid 1c of medium concentration, heats it, and condenses it into the refrigerant liquid 2b. After that, it enters the bottom of the condenser 3 via 14 A of pipelines.

In the condenser 3, the refrigerant vapor 2c coming from the adjacent low temperature regenerator 2 is cooled by the cooling water 23a through the cooling pipe 3A in the condenser 3, and condensed. 3a). The low temperature coolant liquid 3a joins the coolant liquid 2b, enters the evaporator 4 from the conduit 15, is stored at the bottom of the evaporator 4, and becomes the coolant liquid 4a.

The low temperature coolant liquid 4a is dispersed by the pump 20 in the evaporator 4 from the conduit 16 and cools the cold water 22a passing through the heat exchange tube 4A in the evaporator 4. During this cooling, the coolant liquid 4a absorbs heat from the cold water 22a to become the coolant vapor 4b, and then returns to the adjacent absorber 5 to perform a coolant circulation in which the round of coolant is finished. To repeat.

The cold water is based on the temperature t1 at the inlet side of the cold water 22a detected by the temperature detector TD1 and the temperature t2 at the outlet side of the cold water 22a detected by the temperature detector TD2. In order to control 22a to the required temperature, the fuel control valve V21 is configured to control the heating amount of the heater 31 of the high temperature regenerator 1.

In addition, when starting the operation of the apparatus, the opening / closing valve V4 is opened and the pump is opened so that the amount of the absorbing liquid 1a in the high temperature regenerator 1 is insufficient and the high temperature regenerator 1 is not operated in a state where there is little water. By operating the 20, the refrigerant liquid 4a stored at the bottom of the evaporator 4 is pumped by the pump 13 together with the absorbent liquid 5a stored at the bottom of the absorber 1. ) Into.

In the above-described configuration of the absorption type refrigeration apparatus 100 according to the prior art, only the cold water 22a is configured to be supplied. However, instead of the cooling operation for supplying the cold water 22a, the cold water 22a is supplied. The structure (hereinafter referred to as a second conventional technology) of the cold / cold water switching supply type absorption type refrigeration apparatus 100 which enables the heating operation to be changed to hot water 22a and also supplied is disclosed by the patent document 1 described later. have.

In addition, when the absorption refrigeration apparatus 100 is used for an air conditioner, since said cooling operation is mainly used for cooling, it is also called cooling operation, and since said heating operation is mainly used for heating, heating operation Although it is also called, the use of cold water and hot water may be used for applications other than air-conditioning, for example, cooling and warming of articles in industrial production, cooling and warming of commodities, and the like. Including a use, it is called "cooling operation" and "heating operation."

And in the case of the structure of the absorption type refrigeration apparatus 100 of the cold / hot water switching supply type by the 2nd prior art, as shown with the dotted line in FIG. 7, the pipeline 18 and the pipeline 19, and the opening-closing valve V5 are shown. ) And on-off valve V6, and when performing the cooling operation similar to the above-described first conventional technology, when the on-off valve V5 and the on-off valve V6 are closed, and the above-mentioned heating operation is performed, It is comprised so that opening / closing valve V5 and opening / closing valve V6 may be performed.

That is, the opening / closing valve V5 and the opening / closing valve V6 are opened, and the refrigerant vapor 1b separated by evaporation from the high temperature regenerator 1 and the absorbent liquid 1c of medium concentration are connected to the pipe line 18 and the pipe line 19. To the side, directly to the absorber 5, and stops the flow of the cooling water 23a, and operates only the high temperature regenerator 1 without using the low temperature regenerator 2 and the condenser 3. As a result, the hot water 22a passing through the heat exchange tube 4A in the evaporator 4 is heated while performing the absorption liquid circulation and the refrigerant circulation.

Then, based on the temperature t1 at the inlet side of the hot water 22a detected by the temperature detector TD1 and the temperature t2 at the outlet side of the hot water 22a detected by the temperature detector TD2, the hot water ( In order to control 22a) to a required temperature, the fuel control valve V21 is configured to control the heating amount of the heater 31 of the high temperature regenerator 1.

Therefore, the structure of the said 1st prior art and the 2nd prior art is based on the refrigerant | coolant vapor 1b evaporated by the high temperature regenerator 1, and it is based on the cold water 22a and the hot water 22a, ie, the heat load. The heat supply is performed, and the heat capacity of the heat supply, that is, the heat capacity with respect to the heat load, is determined by the heating capacity α of the high temperature regenerator 1 for evaporating the refrigerant vapor 1b.

Moreover, in addition to the structure of the absorption type refrigeration apparatus 100 by the above-mentioned 1st prior art and the 2nd prior art, of the absorption refrigeration apparatus 100 provided with the 2nd low temperature regenerator, the condenser etc. which make industrial wastewater etc. a heat source water. The structure (henceforth 3rd prior art) is disclosed by patent document 2 mentioned later.

By the way, in the structure of the said 1st prior art thru | or 3rd prior art, in the operation | movement after starting the high temperature regenerator 1 and raising the absorption liquid 1a to a required temperature, the heating amount of the heater 31 is made into a heat load. Although the fuel control valve V21 is controlled so as to correspond, an accident due to incomplete combustion or the like of the fuel gas 31a in the heater 31 is likely to occur in the range where the heating amount is small. Up to about 25% of the heating amount α of the heating capacity α of the regenerator 1 cannot be controlled to be proportional to the heat load.

For this reason, for example, in the range where the heating amount is about 25% or less of the heating capacity α, the ignition is performed in a state where the valve opening degree γ of the fuel control valve V21 of the heater 31 is set to about 25%. And fire extinguishing are repeated at very short time intervals (controlled as "run / stop heating" in the present invention) (controlled as "run / stop control" in the present invention).

Then, as shown in Fig. 9, the upper limit of the area to be heated by the operation / stop control, that is, the operation / stop control area X is set as the proportional control start point Y1, and the proportional control corresponding to the heat load more than that is made. The area Y is configured.

In addition, in the absorption type refrigeration apparatus 100 according to the first conventional technique to the third conventional technique, the control portion 30 is provided as a part for performing the control process for each operation operation as described above. For example, the structure similar to the control part 30 of FIG. 8 is well-known, In FIG. 8, the control part 30 is a processing controller by a microcomputer, for example, a commercially available CPU board (CPU / It is a control unit composed mainly of B).

And the detection signal which detected the temperature of each part, the detection signal which detected the opening / closing state of each open / close valve and control valve, the valve opening degree, the operation signal of each pump, etc., from the input operation part 36, for example, a keyboard, By inputting control data, setting data, and the like from the input / output port 30A, each data temporarily stored in the working memory 33 and the control processing flow stored in advance in the processing memory 32. Necessary calculation based on a program, reference value data such as a predetermined temperature value and a predetermined time value previously stored in the data memory 34, time value data such as an elapsed time and a predetermined time, etc. Each control signal obtained by performing a process or the like is output from the input / output port 30A to each control portion, and is written from the contents of the stored data stored in the working memory 33 or the like. That a display portion 37, for example, be configured to display to give a display by the liquid crystal display.

In the configurations of the first to third prior arts described above, in order to increase the heat capacity of the heat supply to the heat load, it is necessary to increase the heat capacity for heating the absorption liquid 1a of the high temperature regenerator 1, A constitution (hereinafter referred to as a fourth conventional technique) in which the heating constitution is improved to improve the effective heating amount of the heater 31 of the regenerator 1 is attempted, and is disclosed by later patent documents 3 and 4. .

[Patent Document 1] Japanese Unexamined Patent Publication No. 6-88654

[Patent Document 2] Japanese Patent Application Laid-Open No. 11-281185

[Patent Document 3] Japanese Patent Application Laid-Open No. 9-14791

[Patent Document 4] Japanese Unexamined Patent Publication No. 10-169903

When it is necessary to increase the heating capacity (alpha) of the high temperature regenerator 1 by the enlargement of the target facility etc. which install the absorption type refrigeration apparatus 100 of said 1st prior art thru | or the 3rd prior art. In addition, the improvement by the structure of the said 4th prior art mentioned above has the problem that the structure of an apparatus becomes complicated, the development investment is large, and a device cannot be provided in a simple and inexpensive structure.

In addition, the large size of the structure of the high temperature regenerator 1 in these prior arts as it is is large, the area | region of said operation / stop control area | region X becomes large, and fuel cost is not economical, The height of 1) becomes large too much, and it is necessary to make the building structure of a setting place into a high structure, and the problem that a demand target is restricted arises.

In addition, during the change of the heating amount for supplying heat to cold water or hot water, the above-mentioned fluctuation of the heating amount by the operation / stop control area X occurs, which causes a problem of disrupting the heat supply.

For this reason, there is a problem that it is expected to provide a large heat capacity type absorption refrigeration apparatus without such a problem.

The present invention is directed to an absorption refrigeration apparatus that heats cold water or hot water on the basis of refrigerant vapor evaporated from an absorption liquid by a high temperature regenerator of an absorption refrigerator as described above.

A first configuration for providing heat capacity increasing means for providing a plurality of said high temperature regenerators in order to increase the heat capacity of said heat supply;

In the above first configuration,

2nd structure which provides the serial connection means which connects a plurality of said high temperature regenerators in series by the structure which gives the said absorption liquid of the said high temperature regenerator of the front end, and said refrigerant vapor to the said high temperature regenerator of a next stage. and,

In said 1st structure or said 2nd structure,

The flow of the absorbent liquid is arranged by setting a drop in which the liquid surface level of the absorbent liquid in the above-described high temperature regenerator at the front end is higher than the liquid surface level of the absorbent liquid in the next high temperature regenerator. 3rd structure which provides free fall arrangement means to make easy,

In any one of said 3rd structure from said 1st structure,

By reducing the heating capacity of the above-described high temperature regenerator at the front end and increasing the heating capacity of the above-mentioned high temperature regenerator at the next stage, the transition from the increase in heating of the above-mentioned high temperature regenerator at the front end to the increase in heating of the above-mentioned high temperature regenerator at the next stage is achieved. A fourth configuration for providing a heat capacity difference means for facilitating,

In the control of the heating amount for performing said heat supply in any one of said 4th structure from said 1st structure, ie, supply heating control,

The range of heating amount by the above-mentioned high temperature regenerator of the front end, that is, the run / stop control area in the front end regenerator, that is, the proportional control area exceeding the front end operation / stop area, and the above-mentioned high temperature regenerator, The above-mentioned shear operation / switching operation is performed by serializing the range of the heating amount by the operation / stop control region in the next stage regenerator, that is, the proportional control region exceeding the next stage operation / stop region. A fifth configuration for providing an operation / stop area variation eliminating means for eliminating fluctuations in the heating amount caused by the stop region and the next stage operation / stop region;

In the above fifth configuration,

When the increase in the heating amount by the above-described high temperature regenerator reaches the maximum value of the heating capacity of the above-described shear regenerator, the heating is started by the heating amount of the above proportional control region of the next stage regenerator; The amount of heating by one shear regenerator is reduced by the amount of heating corresponding to the heating capacity of the next run / stop region, so as to suppress the increase of the above-mentioned supply heating amount accompanying heating by the next stage regenerator. A surge suppression means for performing a supply heating control;

The supply heating control described above is performed by serially heating the increase of the heating amount of the above-described reduction by the above proportional control region of the shear regenerator and the heating increasing by the above proportional control region of the next stage regenerator. According to a sixth structure for providing a series proportional increase means for performing the above-described problems, the above-mentioned problem is solved.

According to the present invention, since a plurality of high temperature regenerators are provided and the heat capacity of the heat supply to the heat load is increased, the heat capacity can be increased by using the existing high temperature regenerator as it is. There is a feature that can provide a large heat capacity type absorption refrigeration apparatus simply and inexpensively without change.

In addition, the absorption liquid and the refrigerant vapor of the high temperature regenerator at the front end are applied to the high temperature regenerator at the next stage, and the drop is set so that the surface level of the absorbent liquid at the high temperature regenerator at the previous stage is higher than the surface level of the absorbent liquid at the next high temperature regenerator. As a result, since the direction of the flow of the absorbent liquid and the refrigerant vapor is determined, there is a feature that the flow of the absorbent liquid and the refrigerant vapor with respect to the cold / hot water function can be performed stably.

Further, the heat capacity of the high temperature regenerator at the front end is made small, and the heat capacity of the high temperature regenerator at the next step is increased, so that the range of heating amount by the proportional control region exceeding the operation / stop control area of the high temperature regenerator at the front end and the high temperature regenerator at the next stage are increased. Since the supply heating amount is controlled in series with the range of the heating amount by the proportional control region exceeding the operation / stop control region of?, The heating amount by each operation / stop control region of each of the high temperature regenerators of the front end and the next stage is controlled. There is a feature that the variation of can be eliminated.

Further, in series as described above, after the heating amount by the high temperature regenerator at the front end is reduced by the heating amount corresponding to the heating capacity of the operation / stop control region at the next stage, the proportional control of the high temperature regenerator at the front end is reduced. Since the heating to increase again by the heating amount and the heating by the proportional control region of the high temperature regenerator of the next stage are serialized, the sudden increase in the heating amount by the overlapping portion of the heating capacity of the next stage operation / stop control region is eliminated. At the same time, there are features such as energy saving operation of the apparatus.

The structure which makes the best form for implementing this invention is demonstrated by Example 1-Example 3 etc. of FIG. In addition, in the structure of FIGS. 1-6, the part shown with the code | symbol same as the structure of FIG. 7-9 is a part which has the same function as the part of the same code | symbol demonstrated by FIG. 7-9, and the control part 30 Is configured using the control unit 30 of FIG.

Example 1

1 to 3, the first embodiment will be described. In addition, the first embodiment is the above-described configuration of the first prior art, that is, the absorption type refrigeration apparatus 100 of the cold water supply type, or the above-mentioned configuration of the second prior art, that is, the absorption type refrigeration of the cold / hot water switching supply type. Since the apparatus 100 is configured by applying the present invention, when it is applied to the above-described configuration of the first prior art, the conduit 18, the conduit 19, the on-off valve V5 and the on-off valve V6 are It is assumed that these components are provided when they are applied to the configuration of the second prior art as described above.

And the structure of this Example 1 differs from the structure of said 1st prior art, or the structure of a 2nd prior art is the following location. That is, in Fig. 1, first, as a plurality of high temperature regenerators, for example, by installing the high temperature regenerator 1w at the front end and the high temperature regenerator 1 at the next stage, the heat capacity of the heat supply to cold water or hot water That is, it is the location which increased the heat capacity with respect to heat load.

Secondly, in order to connect the plurality of high temperature regenerators in series, the high temperature regenerator of the front end is applied to give the absorbing liquid 1aw and the refrigerant vapor 1bw of the high temperature regenerator 1w at the front end to the high temperature regenerator 1 at the next stage. 1w of absorbent liquid (1aw * 1cw) is led from the pipeline (10w) to the portion of the absorbent liquid (1a) of the high temperature regenerator 1 of the next stage, and the refrigerant vapor (1bw) of the high temperature regenerator (1w) of the front stage is connected to the pipeline. It is a location configured to guide the portion of the refrigerant vapor 1b of the high temperature regenerator 1 of the next stage in 14w.

Third, in order to facilitate the flow of the absorbent liquid, the liquid surface level of the absorbent liquid 1aw in the high temperature regenerator 1w of the front end is higher than the liquid surface level of the absorbent liquid 1a in the high temperature regenerator 1 of the next stage. It is a location which sets and arrange | positioned a falling fall, for example, falling fall H.

Fourthly, as shown in Figs. 1 and 2, in order to facilitate the transition from the increase in heating amount of the heating amount of the high temperature regenerator 1w in the front end to the increase in heating amount in the heating amount of the high temperature regenerator 1 in the next stage, The heat capacity β of the high-temperature regenerator 1w is made small, and the heat capacity α of the next-generation high temperature regenerator 1 is made large, for example, as shown in FIG. Is a position configured to be 1/2 of the heat capacity α of the high temperature regenerator 1 of the next stage.

In addition, in this invention, as for heating amount, as for FIG. 2, the heating amount (%) with respect to the heating capacity (beta) of the high temperature regenerator 1w of the front end, and the heating of the high temperature regenerator 1 of the next stage is shown. It means to increase the heating amount (%) with respect to the capacity (alpha). Specifically, in the high temperature regenerator 1w at the stage, the valve opening degree η of the fuel control valve V21w is increased, and In the high temperature regenerator 1 of the next stage, the valve opening degree γ of the fuel control valve V21 is increased.

In addition, the high temperature regenerator 1 of the next stage is the same structure as the high temperature regenerator 1 in the structure of the 1st prior art and the 2nd prior art demonstrated by FIG. 7, and is each of the high temperature regenerator 1w of the front end. The structure of a part is a structure which has the same function of each part of the high temperature regenerator 1, as described by adding the letter w to the end of the code | symbol same as the code | symbol of each part of the high temperature regenerator 1, and the capacity of each component part. It is comprised by making small.

Fifth, as shown in FIG. 3, the range of heating amount by the proportional control area Y exceeding the operation / stop control area X in the high temperature regenerator 1w at the front end, and the high temperature regenerator 1 of the next stage. The high temperature regenerator (1w) at the front end is formed by performing a series heating operation in which heat is supplied by serializing the range of the heating amount by the proportional control region (Y) exceeding the run / stop control region (X) in Is a location configured to eliminate variations in the amount of heating by the run / stop control area X in the step C) and the run / stop control area X in the high temperature regenerator 1 of the next stage.

3, the numerical value which shows the% value of each heating amount is the value described in the ◆ remarks of FIG.

Here, the configuration for performing the series heating operation described above, as shown in Fig. 3, the start / stop control region (1) of the high temperature regenerator 1 of the next stage is set to the proportional control start point Y1 of the high temperature regenerator 1w at the front end. From the starting point of X), that is, the combined position where the position of the heating amount O% coincides, the position of the heating amount O% of the high temperature regenerator 1 of the next stage is changed to the proportional control region Y of the high temperature regenerator 1w of the front end. ), And the proportional control start point Y1 of the next-generation high temperature regenerator 1 is the highest point of the proportional control region Y of the high-temperature regenerator 1w at the front end, that is, the amount of heating. Combination in the range until it matches 100% is possible.

Further, in such a combined state, since the heating by the high temperature regenerator 1w at the front end and the heating by the high temperature regenerator 1 at the next stage overlap in the range of the overlapping portion δ, the transfer of the series heating operation is performed. Between the point Φ, ie, the point shifted to the proportional control start point Y1 of the high temperature regenerator 1 of the next stage, to the point of 100% of the heating amount of the high temperature regenerator 1w in the previous stage, the heating amount is rapidly increased. , Such as the substantial heating increase ε in FIG. 3, results in heating characteristics having portions of very different shapes.

Therefore, as needed, as a structure which correct | amends the superposition of the heating amount in this overlap part (delta), for example, at the transition point (Φ), the heating amount (%) of the high temperature regenerator 1w of the front end is changed. After reducing the heating capacity of the operation / stop control region X of the high temperature regenerator 1 of the next stage, that is, the heating amount corresponding to 25% of the heating amount of the high temperature regenerator 1 of the next stage, The operation amount of the next-generation high temperature regenerator 1 is increased after the heating amount is increased only by the heating amount (%) of the high temperature regenerator 1w at the front end until the point corresponding to 100% of the heating amount of the regenerator 1w. The heating amount may be increased by the heating amount (%) of the stop control region X.

If such a correction is made, the proportional control start point Y1 of the high temperature regenerator 1 of the next stage is extended like the heating increase amount ω after the correction in FIG. You can do it.

Example 2

Hereinafter, Embodiment 2 will be described with reference to FIG. The point at which the configuration of the second embodiment is different from the configuration of the above-described first embodiment shifts the transition point Φ described in the first embodiment in the direction of increasing heat, and the proportional control start point of the high temperature regenerator 1 of the next stage. (Y1) is a location configured to coincide with the highest point of the proportional control region Y of the high temperature regenerator 1w at the front end, that is, the heating amount 100%.

Therefore, the substantial heating increase amount ε is as shown in Fig. 4, and the sudden increase in the heating amount at the time of transition becomes only the heating amount of the overlapping portion δ, but the overlapping amount of the heating amount in the overlapping portion δ For example, the configuration of correcting the value may be performed in the same manner as in the first embodiment, and the heating increase amount ω after the correction is similarly extended to the proportional control start point Y1 of the high temperature regenerator 1 of the next stage. The total heating capacity can be increased to (α + β).

Example 3

5, 6, and 8, the third embodiment will be described. The configuration of the third embodiment is configured such that the transition configuration of the series heating operation is the same as that of the second embodiment described above, and the control unit 30 corrects the heating amount of the overlapping portion δ.

5, the numerical value which shows the% value of each heating amount is the value described in the ◆ remarks of FIG.

Here, when the control part 30 of FIG. 8 demonstrates operation | movement until it transfers to the heating operation by [heating characteristic of a series heating operation] of FIG. 5, first, the high temperature regenerator 1w of the front end and the next stage | paragraph will be explained. Operation of the high temperature regenerator 1 is started, and the temperature detectors T1 and T1w of each high temperature regenerator are brought to a predetermined temperature, for example, 100 ° C, and the liquid surface detectors E1 and E1w of the respective high temperature regenerators. As a result, the liquid surface of the absorbent liquids 1c and 1cw is maintained at a predetermined level, and the absorbent liquids 1c and 1cw are allowed to flow to the downstream side, respectively, by the pressure difference between the respective parts, and after starting is completed. 6 is configured to perform normal control processing based on the control processing flow in FIG.

Then, the control unit 30 is proportional to the detection data of each part acquired in the working memory 33 and the high temperature regenerator 1w of the previous stage stored in advance in the data memory 34 and the high temperature regenerator 1 of the next stage. Based on each data such as the control start point Y1 and the like, the program of the control processing flow of FIG. 6 stored in advance in the processing memory 32 is configured to perform a necessary operation.

Hereinafter, the control processing flow of FIG. 6 will be described. This control process flow is comprised as a subroutine of the main process flow which performs the control process of the whole apparatus, for example, For example, the data signal of the completion of said starting, or the input operation part 36 The operation by the control processing flow of FIG. 6 is performed by making the data signal which operated the predetermined | prescribed operation key provided in this as "normal operation transition data".

In addition, the "heating amount data" made into the heating operation | movement is the data of the setting temperature value set by the input operation part 36 as the target temperature with respect to cold water 22a or hot water 22a of FIG. It is determined experimentally in advance corresponding to the set temperature value and the present temperature of the cold water 22a or the hot water 22a, that is, the temperature difference of the temperature t2 of the temperature detector TD2, and stored in advance in the data memory 34. It consists of data containing the data of a heating amount.

Specifically, in the control processing flow of FIG.

◆ At step SP1, operation data is acquired and the process proceeds to the next step SP2.

◆ In step SP2, it is determined whether the operation data is "normal operation transition data". When it is "normal operation shift data", it shifts to next step SP3, and when it does not, it shifts to the predetermined step part of a main processing flow.

◆ At step SP3, the "heating amount data" is acquired and the process proceeds to the next step SP4.

◆ In step SP4, the heating amount is set to the heating amount of the proportional control start point Y1 of the high temperature regenerator 1w in the previous stage, and the flow advances to the next step SP5.

◆ At step SP5, it is determined whether the heating amount and the temperature t2 of the temperature detector TD2 are the values of the "heating amount data", that is, the target values. When the target value is reached, the process proceeds to the predetermined step location of the main processing flow, and when otherwise, the process proceeds to the next step SP6.

After that, the process proceeds to Step SP1 every predetermined time, for example, every 10 seconds. The same applies to steps SP7, SP11, SP14, and SP16.

◆ At step SP6, the heating amount is set to the heating amount of the proportional control region Y of the high temperature regenerator 1w at the front end, and the flow proceeds to the next step SP7.

Here, in this step, when it comes back, it is assumed that processing is performed to increase the heating amount of the proportional control region Y each time.

◆ In step SP7, the same processing as in step SP5 is performed, and when the target value is reached, the process proceeds to a predetermined step location of the main processing flow, and when otherwise, the process proceeds to the next step SP8.

In step SP8, it is determined whether the heating amount reaches the maximum value of the proportional control region Y of the high temperature regenerator 1w at the front end, that is, 100%. When it reaches 100%, it moves to next step SP9, and when it does not, it moves to step SP6.

◆ In step SP9, the heating amount is the heating amount of the proportional control start point Y1 of the high temperature regenerator 1 of the next stage, and the predetermined reduction amount, that is, the heating amount of the high temperature regenerator 1w of the preceding stage, is adjusted. After the heating amount corresponding to the heating capacity of the operation / stop control region X of the high temperature regenerator 1 is reduced, the process proceeds to the next step SP10.

◆ In step SP10, the heating amount is set to the heating amount of the proportional control region Y of the high temperature regenerator 1w in the front stage, and the flow proceeds to the next step SP11 in the same manner as in step SP6.

Here, in this step, when it comes back, it will process so that the heating amount of the proportional control area Y may increase every time.

◆ In step SP11, the same processing as in step SP5 is performed, and when the target value is reached, the process proceeds to a predetermined step location of the main processing flow; otherwise, the process proceeds to the next step SP12.

◆ In step SP12, the same processing as in step SP8 is performed, and when it reaches 100%, the process proceeds to the next step SP13. Otherwise, the process proceeds to step SP10.

◆ In step SP13, after making heating amount into the heating amount of the proportional control start point Y1 of the high temperature regenerator 1 of the next stage, it transfers to the next step SP14.

◆ In step SP14, the same processing as in step SP5 is performed, and when the target value is reached, the process proceeds to a predetermined step location of the main processing flow, and when otherwise, the process proceeds to the next step SP15.

◆ At step SP15, the heating amount is the heating amount of the proportional control region Y of the high temperature regenerator 1 of the next stage, and the flow proceeds to the next step SP16.

Here, in this step, when it comes back, it is assumed that processing is performed to increase the heating amount of the proportional control region Y each time.

◆ In step SP16, the same processing as in step SP5 is performed, and when the target value is reached, the process proceeds to a predetermined step location of the main processing flow, and when otherwise, the process proceeds to the next step SP17.

In addition, after passing through step SP18, when it comes to this step and moves to the predetermined step location of a main process flow, it will process so that the display performed in step SP18 may be cancelled.

In step SP17, it is determined whether the heating amount reaches the maximum value of the proportional control region Y of the high temperature regenerator 1 of the next stage, that is, 100%. When it reaches 100%, it will transfer to next step SP18, otherwise, it will transfer to step SP15.

◆ In step SP18, for example, the display portion 37 shown in Fig. 8 is displayed to indicate that the heating amount is at the highest operating state, and then the flow advances to the next step SP15.

Therefore, as shown in Fig. 5, since the operation part by the "run / stop control area | region X" of the high temperature regenerator 1 of the next stage is eliminated, the fluctuation of the heating amount by this run / stop operation disappears, When the range of "run / stop control area | region X" (25%) of the high temperature regenerator 1w of the front end makes the whole heating capacity (alpha + (beta)), ie, this heating capacity whole, with one high temperature regenerator Compared with this, it is substantially reduced in the range of 8.3% which is 1/3, and the fluctuation | variation of the heating amount by the said operation / stop operation by this reduction also disappears.

Here, in the case where the configuration for providing a plurality of high temperature regenerators is, for example, three or more high temperature regenerators, the configuration and operation of each high temperature regeneration period are the high temperature regenerators 1w of the front end in the above-described first embodiment. ) And the high temperature regenerator 1 of the next stage, in order to be connected in series and sequentially, and to perform a series heating operation similar to FIGS. 5 and 6 over all the high temperature regenerators.

That is, to summarize the configuration of the above-described embodiments 1 to 3, in general, first, the refrigerant vapor evaporated from the absorbent liquid 1a by the high temperature regenerator of the absorption chiller, for example, the high temperature regenerator 1. In the absorption type refrigerating device 100, which supplies heat to cold water 22a, hot water 22a, 24a, or both based on (1b),

In order to increase the heat capacity of the heat supply, a plurality of the above-mentioned high temperature regenerators, for example, a high temperature regenerator 1w of the heating capacity β and a heat capacity increasing the high temperature regenerator 1 of the heating capacity α are provided. It constitutes the above-mentioned 1st structure which provided a means.

Second, in the first configuration described above,

The above-described high temperature regenerator, for example, the absorption liquid 1aw of the high temperature regenerator 1w and the refrigerant vapor 1bw, for example, by the pipe lines 14w and 10w, The configuration given to one high temperature regenerator, for example, the high temperature regenerator 1, constitutes the above-described second configuration in which the serial connection means for connecting the plurality of high temperature regenerators in series is provided.

In addition, thirdly, in the first configuration or the second configuration described above,

In the above-described high temperature regenerator, for example, the liquid surface level of the absorption liquid 1a in the high temperature regenerator 1w, the above-mentioned high temperature regenerator, for example, the high temperature regenerator 1, The above-described third configuration is provided in which a free fall arrangement means for facilitating the flow of the above-mentioned absorbent liquid is provided by setting and arranging a free fall, for example, a free fall H that is higher than the liquid surface level of the above-described absorbent liquid 1a. It will be doing.

And fourth, in any one of the above-mentioned 3rd structures from said 1st structure,

The heating capacity of the above-described high temperature regenerator at the front end, for example, the heating capacity β of the high temperature regenerator 1w is made small, and the heat capacity of the above-mentioned high temperature regenerator at the next stage, for example, the heating capacity of the high temperature regenerator 1 By increasing (α), from the increase in heating of the above-described high temperature regenerator, for example, the high temperature regenerator 1w, to the increase in heating of the above-described high temperature regenerator, for example, the high temperature regenerator 1, The fourth configuration described above provided a heat capacity difference means that facilitates the transition.

Fifth, in the control of the heating amount for performing the above heat supply in any one of the above-described fourth configurations from the above-described first configuration, that is, in the supply heating control,

By the above-mentioned high temperature regenerator 1w of the front end, ie, the run / stop control area X in the front end regenerator 1w, ie, the proportional control area Y exceeding the front end run / stop area X. Exceeds the range of heating amount and the above-mentioned high temperature regenerator 1 of the next stage, that is, the run / stop control region X, that is, the next stage run / stop region X in the next stage regenerator 1. By supplying the above-described supply heating control by serializing the range of the heating amount by one proportional control region Y, the heating amount by the above shear operation / stop region X and the subsequent stage operation / stop region X. The fifth configuration described above provided with a driving / stopping area variation eliminating means for eliminating the variation of.

And sixth, in addition to the fifth configuration described above,

When the increase in the heating amount by the shear high temperature regenerator 1w reaches a maximum value of 100% of the heating capacity of the shear regenerator 1w, the above proportional control region Y of the next stage regenerator 1 is described. The heating amount by the heating amount of the above) is started, and the heating amount by the shear regenerator 1w is reduced by the heating amount corresponding to the heating capacity of the operation / stop region X described above. However, a surge suppression means for performing the above-described supply heating control so as to suppress the surge of the above-described supply heating amount accompanying the heating by the regenerator 1;

Heating to increase the amount of heating that has been reduced by the proportional control region Y of the shear regenerator 1w described above, and to the proportional control region Y of the next stage regenerator 1 described above. The sixth structure described above is provided in which a series proportional increase means for performing the above-described supply heating control by serializing the heating to be increased by series is provided.

[Modification implementation]

The present invention includes the following modifications.

(1) Embodiments 1 to 3 or a configuration in which three or more high temperature regenerators are provided.

The heating capacity of the high temperature regenerator of the front end and the heating capacity of the high temperature regenerator of the next stage are changed so that it may become the same heating capacity.

(2) Embodiments 1 to 3 or a configuration in which three or more high temperature regenerators are provided.

The heating capacity of the high temperature regenerator at the front end is made large, and the heating capacity of the high temperature regenerator at the next stage is made small, or the heating capacity of the high temperature regenerator at the previous stage and the high temperature regenerator of the next stage is made equal. In this case, although the range of the operation / stop control region of the high temperature regenerator at the front end cannot be sufficiently reduced from the total heating capacity, the effect that the heating capacity can be increased by using the existing high temperature regenerator is obtained.

(3) The plurality of high temperature regenerators are changed to be connected in parallel to increase the heating capacity.

(4) The structure of Example 1-Example 3 and said (1)-(3) is applied to the structure of the said 4th prior art, and is comprised.

(5) In the constitution of Examples 1 to 3 and the above (1) to (4), a conduit for supplying the absorbent liquid 1cw of the high temperature regenerator 1 at the front end to the high temperature regenerator 1 of the next stage ( The connection position of 10w) is changed to the appropriate location of the absorption liquid 1a of the high temperature regenerator 1 of the next stage like the pipeline 10wx shown by the dotted line in FIG.

(6) In the configuration of Examples 1 to 3 and (1) to (5) above, in the proportional control region Y of the high temperature regenerator 1w at the front end after the transition in Figs. The increase in heating is changed so that the high temperature regenerator 1 of the next stage is increased after being proportionally controlled once, as shown by the point A shown by a thick dotted line in FIG.

In addition, in the case of the structure of FIG. 5, this * A point can be moved to the point corresponding to 75% of heating amount of the high temperature regenerator 1 of the next stage.

Industrial availability

As described above, the present invention can perform the heating capacity of the high temperature regenerator in the absorption refrigerating device in a simple and inexpensive configuration, and is applicable to each operation / stop control region of the high temperature regenerator in the front stage and the high temperature regenerator in the next stage. Since it is possible to control the supply of the heating amount to the heat load by proportional control that eliminates the heating fluctuation caused by the heating fluctuation, it is possible to use the absorption refrigeration apparatus, for example, the apparatus, for example, the air conditioner, the manufacturing apparatus of the product, the display apparatus of the product. Also in this, the same effect can be exhibited.

1 to 6 show an embodiment of the present invention, and FIGS. 7 to 9 show the prior art, and the contents of each drawing are as follows.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of the entirety of the first to third embodiments.

Fig. 2 is an operational characteristic diagram of main parts of the first to third embodiments;

3 is an operation characteristic view of main parts of the first embodiment;

4 is an operation characteristic view of main parts of a second embodiment;

5 is an operation characteristic view of main parts of a third embodiment;

6 is a control processing flow of Embodiment 3;

Figure 7 is a block diagram of the whole prior art.

Fig. 8 is a block diagram showing main parts of a third embodiment and the prior art.

9 is an operation characteristic diagram of the main part of the prior art;

<Explanation of symbols for main parts of the drawings>

1, 1w: high temperature regenerator

1a, 1aw, 1c, 1cw, 2a, 5a, 5b: absorbent liquid

1b, 1bw, 2c, 4b: refrigerant vapor

2, low temperature regenerator

2A: heat sink

2b, 3a, 4a,: refrigerant liquid

3: condenser

3A, 5A: cooling tube

4: evaporator

4A: Heat Exchanger Tube

5: absorber

6: low temperature side heat exchanger

7: high temperature side heat exchanger

9, 10, 10w, 10wx, 11, 14, 14A, 14w, 15, 16, 17, 18, 19, 23, 23a: pipeline

13, 20: pump

21: entrance pipeline

22: outlet pipe

22a: cold water, hot water

23a: cooling water

30: control unit

30A: I / O port

31, 31w: heater

31a, 31aw: fuel

31b, 31bw: blower

31c, 31cw: Igniter

32: processing memory

33: working memory

34: memory for data

35: clock circuit

36: input operation part

37: display part

100: absorption refrigeration unit

E1, Elw: Liquid Surface Detectors

H: free fall

T1, T1w, TD1, TD2: Temperature Detector

t1, t2: temperature

V4, V5, V6: open valve

V21, V21w: Flow control valve, fuel control valve

X: Run / Stop Control Area

Y: proportional control area

Y1: Proportional control start point

α, β: heating capacity

γ, η: valve opening

Φ: transition point

Claims (11)

delete It is an absorption refrigeration apparatus that heats the cold water or the hot water based on the refrigerant vapor evaporated from the absorption liquid by the high temperature regenerator of the absorption refrigerator, In order to increase the heat capacity of the heat supply, a plurality of the high temperature regenerators heated by fuel are provided, A plurality of said high temperature regenerators are connected in series by the structure which gives the said absorption liquid of the said high temperature regenerator of the front end, and the said refrigerant vapor to the said high temperature regenerator of a next stage. 3. The flow of the absorbent liquid according to claim 2, wherein a drop is set so that the liquid surface level of the absorbent liquid in the high temperature regenerator at the front end is set higher than the liquid surface level of the absorbent liquid in the high temperature regenerator at the next stage. Absorption refrigeration apparatus, characterized in that easy. 3. The method according to claim 2, wherein the heating capacity of the high temperature regenerator at the front end is made small and the heating capacity of the high temperature regenerator at the next step is increased, thereby increasing the heating capacity of the high temperature regenerator at the front end to increasing the heating capacity of the high temperature regenerator at the next stage. Absorption refrigeration apparatus characterized in that the transition is easy. 4. The method according to claim 3, wherein the heating capacity of the high temperature regenerator at the front end is made small and the heating capacity of the high temperature regenerator at the next step is increased, thereby increasing the heating capacity of the high temperature regenerator at the front end to increasing the heating capacity of the high temperature regenerator at the next stage. Absorption refrigeration apparatus characterized in that the transition is easy. The control unit according to claim 2, further comprising a control unit for controlling the heating amount (hereinafter referred to as supply heating control) for performing the heat supply, wherein the control unit includes: The range of the heating amount by the proportional control region exceeding the operation / stop control region (hereinafter referred to as the shear operation / stop region) in the high temperature regenerator (hereinafter referred to as the shear regenerator) at the front end, and the next high temperature The supply heating control is carried out by serializing a range of heating amount by a proportional control region exceeding an operation / stop control region (hereinafter referred to as a next stage operation / stop region) in a regenerator (hereinafter referred to as a next stage regenerator). The absorption refrigeration apparatus is performed by eliminating fluctuations in the heating amount caused by the front end operation / stop region and the next stage operation / stop region. The control unit according to claim 3, further comprising a control unit that controls the amount of heating for performing the heat supply (hereinafter referred to as supply heating control), wherein the control unit includes: The range of the heating amount by the proportional control area exceeding the operation / stop control area (hereinafter referred to as the shear operation / stop area) in the high temperature regenerator (hereinafter referred to as the shear regenerator) at the front end, and the above-mentioned stage The supply heating control by serializing a range of heating amount by a proportional control region exceeding an operation / stop control region (hereinafter referred to as a next stage operation / stop region) in a high temperature regenerator (hereinafter, referred to as a next stage regenerator). The absorption refrigeration apparatus according to claim 1, wherein variation in the heating amount caused by the front end operation / stop region and the next stage operation / stop region is eliminated. The method of claim 6, wherein the control unit, When the increase in the heating amount by the shear regenerator reaches a maximum value of the heating capacity of the shear regenerator, the heating is started by the heating amount of the proportional control region of the next stage regenerator, and the heating by the shear regenerator is performed. By reducing the amount by a heating amount corresponding to the heating capacity of the next stage operation / stop region, the supply heating control is performed so as to suppress a sudden increase in the supply heating amount accompanying heating by the next stage regenerator, The supply heating control is performed by serially heating the heating which reduces the reduced heating amount by the proportional control region of the shear regenerator and the heating increasing by the proportional control region of the next stage regenerator. Absorption refrigeration unit. The control unit according to claim 4, further comprising a control unit for controlling the heating amount (hereinafter referred to as supply heating control) for performing the heat supply, wherein the control unit includes: The range of the heating amount by the proportional control area exceeding the operation / stop control area (hereinafter referred to as the shear operation / stop area) in the high temperature regenerator (hereinafter referred to as the shear regenerator) at the front end, and the above-mentioned stage The supply heating control by serializing a range of heating amount by a proportional control region exceeding an operation / stop control region (hereinafter referred to as a next stage operation / stop region) in a high temperature regenerator (hereinafter, referred to as a next stage regenerator). The absorption refrigeration apparatus according to claim 1, wherein variation in the heating amount caused by the front end operation / stop region and the next stage operation / stop region is eliminated. The method of claim 7, wherein the control unit, When the increase in the heating amount by the shear regenerator reaches a maximum value of the heating capacity of the shear regenerator, the heating is started by the heating amount of the proportional control region of the next stage regenerator, and the heating by the shear regenerator is performed. By reducing the amount by a heating amount corresponding to the heating capacity of the next stage operation / stop region, the supply heating control is performed so as to suppress a sudden increase in the supply heating amount accompanying heating by the next stage regenerator, The supply heating control is performed by serially heating the heating which reduces the reduced heating amount by the proportional control region of the shear regenerator and the heating increasing by the proportional control region of the next stage regenerator. Absorption refrigeration unit. The method of claim 9, wherein the control unit, When the increase in the heating amount by the shear regenerator reaches a maximum value of the heating capacity of the shear regenerator, the heating is started by the heating amount of the proportional control region of the next stage regenerator, and the heating by the shear regenerator is performed. By reducing the amount by a heating amount corresponding to the heating capacity of the next stage operation / stop region, the supply heating control is performed so as to suppress a sudden increase in the supply heating amount accompanying heating by the next stage regenerator, The supply heating control is performed by serially heating the heating which reduces the reduced heating amount by the proportional control region of the shear regenerator and the heating increasing by the proportional control region of the next stage regenerator. Absorption refrigeration unit.

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