KR0139752B1 - 1, 2 type common absorption heat pump - Google Patents

Abstract

The present invention relates to a cold / heating absorption type heat pump capable of realizing cooling and heating in one machine by operating a cooling cycle in summer, and operating as a heating cycle in winter, and a burner (1) for supplying heat; Two generator / absorber dual elements (2, 5) for supplying heat from the burner (1) to generate and supply steam refrigerant, or to absorb refrigerant and supply a rare solution; Two condenser / evaporator dual elements (3, 4) connected to said generator / absorber dual elements (2, 5) and condensing or evaporating a refrigerant; Cold and heating loads (7,8) communicating with the condenser / evaporator dual elements (3,4) and cooling or heating cold water; A solution pump (12) for supplying a solution from the low pressure side to the high pressure side of the generator / absorber dual element (2, 5); A refrigerant pump (14) for supplying refrigerant to the condenser / evaporator dual element (2,5) side; Circulating pumps 13 and 15 for circulating the cold and cooling water of the cold and heating loads 7 and 8; It is formed by valves 16 and 35 for selecting cold and heating to communicate or block the two condenser / evaporator dual elements. Therefore, high and low temperature heat can be selectively obtained by one machine as needed, so it can be combined with cold and heating, and it is efficient by using separate cycles suitable for each to obtain high / low temperature heat. Minimize the additional equipment required for conversion.

Description

1, 2 type common absorption heat pump

1 is a conventional heat pump schematic diagram, (a) is a schematic diagram of a heat pump system, and (b) is a schematic diagram of a heat pump main part.

2 is a cooling and heating system diagram of the present invention, (a) is a cooling circulation schematic. (b) is a heating circulation schematic.

3 is a general view of the heat pump of the present invention.

4 is a cross-sectional view of the generator / absorber combined device of the present invention.

5 is a cross-sectional view of a first condenser / evaporator of the present invention.

6 is a cross-sectional view of a second condenser / evaporator of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Burner or heat supply 2, 5: Generator / absorber dual element

3, 4: condenser / evaporator dual element 6: heat exchanger

7: cooling load or external heat source 8: heating load or cooling device

9: 3-way valve 10, 11: 4-way valve

12: solution pump 14: refrigerant pump

13, 15: circulation pump 16, 35a: valve

35: connection and 36: solution distributor

The present invention relates to an absorption type heat pump, and more particularly, to a type 1 or 2 combined absorption type heat pump that can be operated in a cooling cycle in summer and a heating cycle in winter to implement cooling and heating in one machine.

Generally, absorption heat pumps include one absorption heat pump and two absorption heat pumps.

The 1 type absorption heat pump is used for heating, hot water supply, drying, etc., and hot water temperature is about 40 ~ 100 ℃, and the high temperature heat source such as steam, high temperature water, and fuel is used as the driving heat source. It is about 1.6 ~ 1.8. On the other hand, two types of absorption heat pumps are used for evaporation, concentration and preheating of boiler feed water. The hot water temperature is 90 ~ 150 ℃, which is relatively high compared to the first type, while the driving heat source uses 90 ~ 110 ℃ medium temperature arrangement. The grade factor is about 0.5.

This is described in detail on pages 47 to 55 of the Advancement of Absorption Heat Pumps, published by Nippon Gas Business Newspaper.

Conventional type 1 and 2 combined absorption heat pumps have a first generator (A), a first condenser (B), and a second generator (C), which are the same as a cooling cycle in order to selectively operate cooling and heating with a single machine. ), The second condenser (D), the first absorber (E) and the first evaporator (F) were installed, and the second absorber (G) and the second evaporator (H) were installed again to operate the cooling and heating. .

However, the additional device for installing the second absorber (G) and the second evaporator (H) is additionally installed, and is operated at a higher pressure than the first absorber (E) and the first evaporator (F), thereby heating at a higher temperature. Hot water suitable for the The reason for installing the second absorber (G) and the second evaporator (H) is that in the case of a cooling cycle, the absorber (E) generally operates at the lowest pressure of the components of the cycle, so the temperature is low, and thus suitable for heating. Since it is difficult to obtain hot water at a high temperature, a second absorber G operating under a higher pressure than the first absorber E may be installed to obtain hot water at an appropriate temperature.

In this conventional cooling and heating combined absorption heat pump, as shown in (a) and (b) of FIG. 1, the diluted solution is supplied to the connection pipe 46 of the first generator (A) so that the connection pipe ( Steam flowing through the 12) generates a refrigerant by heat-exchanging with the rare solution, the refrigerant is supplied through the connecting pipe 10, the first refrigerant is generated, and then the intermediate concentration of the concentrated solution through the connecting pipe 34 Supplied to heat exchanger (58). The intermediate agricultural solution whose temperature has fallen through the primary heat exchanger (58) is supplied to the second generator (C) via the connecting pipe (36), and is heated by the heat condensed by the primary refrigerant in the connecting pipe (10) to the secondary. The refrigerant is generated, and the secondary refrigerant is condensed by the cooling water flowing through the connection pipe 50. The primary condensation refrigerant and the secondary condensation refrigerant are joined through the connecting pipe 28a and supplied to the second evaporator (H), at which time the valve 78 remains closed. The intermediate concentrated solution after the generation of the secondary refrigerant becomes the thickest concentrated solution and is supplied to the secondary heat exchanger 74 via the supply pipe 38a. In addition, a part of the liquid refrigerant supplied to the second evaporator (H) is circulated through the connecting pipe 60 by the pump 66, and the other part is supplied to the first evaporator (F) through the connecting pipe (28b). do. On the other hand, the highest concentration solution supplied to the second absorber (G) via the heat exchanger (74) is heated while circulating through the connecting pipe 60 to absorb the refrigerant supplied in the vapor form becomes an intermediate concentrated solution. In addition, when flowing through the connecting pipe 58 and absorbing the refrigerant vapor, the cooling water flowing inside the connecting pipe 158 becomes high temperature by the heat of absorption. The intermediate concentrated solution absorbing the refrigerant is supplied to the first absorber E through the third heat exchanger 76 along the connecting pipe 38b. The liquid refrigerant supplied from the second evaporator (H) to the first evaporator (F) through the connecting pipe (28b) flows over the connecting pipe (52), and by cold water flowing inside the connecting pipe (52). The gaseous refrigerant is supplied to the first absorber (E), and the intermediate agricultural liquid supplied to the first absorber (E) via the third heat exchanger (76) flows through the connecting pipe (68) to cool the refrigerant vapor. Absorption heat generated when absorbing heats the circulating fluid refrigerant inside the connection pipe 6 to evaporate, and the vapor refrigerant due to evaporation is supplied to the second evaporator (H). The intermediate agricultural solution becomes a rare solution after the refrigerant is absorbed. The intermediate tube solution is pumped through the connecting pipe 44 through the third, second, and first heat exchangers 76, 74, and 58 to the rare solution. It is supplied to the first generator A via 46. Therefore, the cooling water flowing through the connecting pipe 50 and the cooling water flowing through the connecting pipe 158 are heated and used to the required high temperature. In general, there is no second absorber (G), the second evaporator (H) and the connecting pipe 60 in the case of the dual utility cycle, hot water can be obtained through the connecting pipe (48, 50). However, the heat obtained from the connecting pipe 48 could not be obtained because the pressure of the first absorber E was low.

This conventional technique is based on a refrigeration cycle and the heat of absorption is required to obtain at a high temperature, and thus requires a second pressure absorber and a second evaporator of a higher pressure in addition to the low pressure absorber which is a characteristic of the cooling cycle. Due to the additional device combined with the evaporator, the system is complicated and part of the refrigerant generated for the operation of the high pressure second absorber and the second evaporator is used regardless of COP (Coefficient of Performance). The problem of lower C.O.P blood than the C.O.P heating of an ideal dual utility cycle has arisen.

Accordingly, the present invention is to solve the above problems, the object of the first is to allow the cooling and heating of one machine, and second; to minimize the additional equipment required for the conversion of the cycle, and third; there is a heat source In this case, it is to provide one or two common absorption heat pumps to add waste heat recovery and heater transformer function by heating operation.

A burner for supplying heat to achieve the above object; In order to supply heat from the burner to generate steam refrigerant or to supply refrigerant by absorbing the refrigerant, a plurality of connection tubes communicating with the burner are formed in the lower part, and the refrigerant vapor discharge connection tube and the solution are sequentially formed in the upper part. Two generator / absorber dual elements consisting of a supply tube, a solution distributor, a steam refrigerant generating tube and a concentrate solution tube; connected to the generator / absorber dual element and liquid refrigerant at the bottom to condense or evaporate the refrigerant. Form a connection pipe for the discharge, respectively, and a liquid refrigerant supply connection pipe on the upper side, a refrigerant steam connection pipe on the upper side, and a combustion gas connection pipe and a solution distributor and an external heat source water supply pipe from the top to the bottom. Two condenser / evaporator dual elements in series; Cold and heating loads in communication with the condenser / evaporator dual elements to cool or heat cold water; A solution pump for supplying a solution from the low pressure side to the high pressure side of the generator / absorber dual element; A refrigerant pump supplying refrigerant to the condenser / evaporator dual element to an evaporator side; A circulation pump for circulating cold water and cooling water of the cold and heating loads; One or two common absorption type heat pumps are provided, characterized in that the valve is configured to select between cooling and heating to communicate or block the two condenser / evaporator dual elements.

An embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 3 and 4, the generator / absorber dual elements 2, 5 form a plurality of connecting pipes 35 in communication with the burner 1 at the bottom, and sequentially discharge the refrigerant vapor from the top. Connecting pipe 18, connecting pipe for supplying rare solution (32, 29), solution distributor (36), connecting pipe for steam refrigerant generation (34, 30, 31, 27) and connecting pipe for discharge of agricultural liquid ( 33, 28).

When the generator / absorber dual element 2, 5 is a cooling cycle, the generator / absorber dual element 2 serves as a generator. That is, flame and exhaust gas pass through the connection pipe 35 in communication with the burner 1, and the connection pipes 31 and 34 are closed. At this time, the rare solution is supplied from the connecting pipe 32 and is heated while flowing around the connecting pipe 35 through the solution distributor 36 and the connecting pipes 34 and 31 to generate steam refrigerant, and the generated steam refrigerant. Exits into connector 18. In addition, the rare solution which generated the steam refrigerant turns into a concentrated solution and flows to the connecting pipe 33.

Meanwhile, the generator / absorber dual element 5 serves as an absorber. The burner 1 and the connection pipe 35 are separated, and the agricultural solution is supplied to the solution distributor 36 through the connection pipe 29. . At this time, the concentrated solution is evenly distributed on the connection pipes 27 and 30 through the solution distributor 36, and the refrigerant vapor is supplied from the connection pipe 24. The supplied coolant is absorbed by the concentrated solution flowing through the connection pipes 27 and 30, and the absorption heat generated at this time is absorbed by the cooling water flowing through the connection pipes 27 and 30. In addition, the concentrated solution absorbing the refrigerant flows into the connection pipe 28 as a rare solution.

In the case of a heating cycle, the generator / absorber dual element 2 acts as an absorber. At this time, the connection pipe 35 is cut off from the burner 1, and the cooling water passes through the connection pipes 31 and 34, and the rest of the connection pipe 35 operates in the same manner as the generator / absorber dual element 5 of the cooling cycle.

On the other hand, the generator / absorber dual element 5 acts as a generator. In this case, the connection section 35 is in communication with the burner 1, the connection pipes 27 and 30 are closed and the rest is operated in the same manner as the generator / absorber dual element 2 of the cooling cycle.

As shown in FIG. 5, the condenser / evaporator dual element 3 forms the liquid refrigerant discharge connection tubes 20 and 37 at the bottom, respectively, and the liquid refrigerant supply connection tube 21a at the top thereof. It forms a connection pipe for steam refrigerant on the upper side. In addition, the upper and lower connection pipes 23 and 25a for the combustion gas, the solution distributor 36, and the external heat source water supply pipes 17 and 19 are sequentially formed.

This condenser / evaporator dual element 3 has a condenser / evaporator dual element 3 acting as a condenser when it is a cooling cycle. At this time, the refrigerant vapor is supplied through the connecting pipe 18, the connecting pipes 23 and 25a are blocked, and cooling water is supplied to the connecting pipes 19 and 17. Therefore, the heat generated while condensing the steam refrigerant is removed, thereby condensing the steam refrigerant. At this time, the condensed liquid refrigerant flows through the connecting pipe 20, and the connecting pipe 21a is blocked by the valve 35.

On the other hand, in the case of a heating cycle, the condenser / evaporator dual element 3 serves as an evaporator. At this time, the connection pipe 20 is blocked by the valve 16, the combustion gas flows into the connection pipe (25a, 23). In addition, the valve 35 is opened, and the pump 14 is operated to supply liquid refrigerant through the connection pipe 21. At this time, the liquid refrigerant is evaporated by the heat exchange of the refrigerant by the combustion gas flowing through the connection pipe (25a, 23) and the external heat source water flowing through the connection pipe (19, 17). In addition, the liquid refrigerant that failed to evaporate is discharged through the connecting pipe 37, and the vaporized vapor is discharged through the connecting pipe 18.

As shown in FIG. 6, the condenser / evaporator dual element 3 forms a liquid refrigerant discharge conduit 21 and 36a at the lower side, and a liquid refrigerant supply connection tube 20 'at the upper side and the upper side. A steam refrigerant supply pipe 24 is formed to sequentially form a solution distributor 36 and a cold water connection pipe from the top to the bottom.

The condenser / evaporator dual element 4 serves as an evaporator when the condenser / evaporator dual element 4 is operated in a cooling operation. At this time, the liquid refrigerant is supplied through the connecting pipe 20a, and the supplied liquid refrigerant is evenly distributed on the connecting pipes 22 and 26 via the solution separator 36, and the inside of the connecting pipes 22 and 26 is distributed. The cold water passing through evaporates the liquid refrigerant by heating, and the vapor refrigerant flows through the connection pipe (24). In addition, the connection pipe 21 is blocked by the valve 35a, and the liquid refrigerant that failed to evaporate goes out through the heating pipe 36.

On the other hand, when the heating operation condenser / evaporator dual element (3) serves as a condenser. At this time, the connection pipe 21a is blocked by the valve 16, steam connection refrigerant is supplied to the connection pipe 24, the heat is taken to the cooling water through the connection pipe (22, 26) to condense. In addition, the condensation refrigerant flows through the connecting pipe (21).

In the present invention, as shown in FIG. 2 and FIG. 3, in the cooling cycle, the solution is circulated between the generator and the absorber, and the pump 12 supplies the solution from the low pressure side to the high pressure side. At this time, the refrigerant is absorbed by the absorber through the connection pipe 28, the pump 12, the heat exchanger 6, and the connection pipe 32, and the diluted rare solution is supplied to the high pressure generator through the heat exchanger 6. . In addition, the evaporative refrigerant is generated in the generator through the connection pipe 33, the heat exchanger 6 and the connection pipe 29, and the concentrated agricultural solution is supplied to the absorber via the heat exchanger (6).

Refrigerant circulation is condensed in the condenser (3) by the steam refrigerant from the generator through the connecting pipe (20), the valve (16) and the connecting pipe (20a) through the connecting pipe (18). It is fed to the evaporator in a state where the pressure is dropped through. The valve 35a shuts off during the cooling cycle. In addition, the liquid refrigerant is supplied to the evaporator through the connection pipe 21a, and the evaporated refrigerant evaporated is supplied to the absorber 5 through the connection pipe 36a.

The cold water circulation circulates through the circulation pump 13, the four-way valve 10, the supply pipes 26 and 22, the four-way valve 11, the cooling load 7, and the circulation pump 13. In addition, the four-way pump (10, 11) to operate the cooling water to circulate the closed loop including the cooling load (7) and the evaporator is cooled in the evaporator, so that the cooling action is made in the cooling load (7).

The circulation of the coolant flows into the pump 15, the connecting pipes 30 and 27, the three way valve 9, the connecting pipes 17 and 19, the four way valve 11, the heating load 8 and the pump 15. Circulate At this time, the three-way valve (9) and the four-way valve (10, 11) to operate the generator / absorber dual element (5), condenser / evaporator dual element (3) and the loops including the heating load so that the cooling water circulates The cycle is maintained by taking heat away from condensation and absorption and dissipating heat.

On the other hand, during the heating cycle, the solution circulation generates steam refrigerant in the generator (5), and then the concentrated solution passes through the heat exchanger (6) to the absorber (2) through the heat exchanger (6) by the pumping action of the pump (12). Supplied. In addition, the concentrated solution completes the absorption in the absorber 2 and becomes a rare solution and is supplied to the generator 5 through the connection pipe 33, the heat exchanger 6, and the connection pipe 29.

The refrigerant circulation closes the valve 16 to block the connection pipes 20 and 20a. In addition, the valve 35a is opened, the pump 14 is operated to supply the condenser 4 through the connecting tube 24 in a vapor state, and the condensed refrigerant is supplied to the evaporator 3. The refrigerant evaporated and supplied to the evaporator 3 is supplied to and absorbed by the absorber 2 through the connection pipe 18.

The heat source water circulation operates the valves 11, 10 to cause the heat source water to circulate in a closed loop comprising the condenser / evaporator dual element 3. The exhaust gas exiting the generator 5 then passes through the connecting tubes 25a and 23 of the condenser / evaporator dual element 3.

The hydrothermal circulation operates the valves 9, 10, 11 to circulate a closed loop comprising the generator / absorber dual element 2, the condenser / evaporator dual element 4 and the heating load 8 to ensure that Hot water is obtained.

As described above, the present invention can selectively obtain the heat of the high temperature and low temperature by one machine as needed, so that it can be combined with cold and heating, and in particular to obtain a high / low temperature heat, respectively. The use of cycles is efficient and minimizes the additional equipment required to convert cycles.

Claims (1)

A burner for supplying heat; In order to supply heat from the burner to generate steam refrigerant or to supply the refrigerant by absorbing the refrigerant, a plurality of connection tubes communicating with the burner are formed at the lower portion, and the refrigerant vapor discharge connection tube and the sequential order are disposed on the upper portion. Two generator / absorber dual elements consisting of a connector for supplying a solution, a connector for distributing a vapor, a refrigerant for generating a refrigerant refrigerant, and a connector for discharging the agricultural liquid; It is connected to the generator / absorber dual element to form a liquid refrigerant discharge connector in the bottom to form a condensation or evaporation of the refrigerant, and to form a liquid refrigerant supply connection pipe on the upper side and to form a refrigerant steam connection pipe on the upper side Two condenser / evaporator dual elements sequentially installed at a lower portion of the connection pipe for combustion gas, a solution distributor, and a connection pipe for supplying external heat source water; Cold and heating loads in communication with the condenser / evaporator dual elements to cool or heat cold water; A solution pump for supplying a solution from the low pressure side to the high pressure side of the generator / absorber dual element; A refrigerant pump supplying refrigerant to the condenser / evaporator dual element to an evaporator side; A circulation pump for circulating cold water and cooling water of the cold and heating loads; 1, 2 type common absorption type heat pump, characterized in that consisting of a valve for selecting the cooling, heating for communicating or blocking the two condenser / evaporator dual elements.