KR100321582B1 - Absorption air conditioner - Google Patents

Abstract

PURPOSE: An absorption air conditioner is provided to decrease the installation space by integrally forming an indoor unit with a body with simple structure, and to improve thermal efficiency by circulating high temperature steam and water sequentially. CONSTITUTION: An evaporator(3) is separated from an absorption air conditioner including a high temperature regenerator(4), a steam refrigerant separating container, a low temperature regenerator(5), an absorber(2), a condenser(8) in the upper part and a heating part in the lower part. Plural horizontal heat pipes are installed in the evaporator, and plate heat exchange fins are formed outside the heat pipes. Indoor air is passed through the heat pipes by flowing air with a blower fan without an additional indoor unit and a coolant circuit. A cooling/heating switching valve is installed in a connection pipe between the high temperature regenerator and a liquid heat exchanger(701), and inflow of liquid to the liquid heat exchanger is restricted by closing the switching valve in heating. Refrigerant steam is streamed into the condenser, and high temperature steam is flowed into the evaporator. Heating is performed with exchanging heat in the evaporator after flowing air by the blower fan.

Description

Absorption HVAC

[Technical field to be registered]

The present invention relates to an absorption type air conditioner using an aqueous solution such as lithium bromide as an absorbent liquid, and more particularly, a main body and an evaporator composed of a vertical cylindrical regenerator, an absorber, and a condenser, and an evaporator as an integrated unit. It is invented to perform simultaneously.

[Prior art]

Absorption air conditioner using aqueous solution such as lithium bromide absorbent liquid is composed of heating source and regenerator for regenerating absorbent liquid and generating refrigerant, solution pump for circulating solution, evaporator for evaporating refrigerant, refrigerant vapor evaporated from evaporator Absorber for absorbing the cold water circuit to discharge the evaporation heat from the evaporator to the cold water cooled in the evaporator to the indoor unit to supply cold air to the room, and the cooling tower 10 for emitting the absorption heat absorbed by the absorber to the outside Or a cooling device.

In order to reduce the size and efficiency of the above components, an outdoor heat exchanger, an absorber heat pipe, and a condenser heat pipe are connected in an annular order, and a cooling water circuit for circulating the cooling water with a cooling water pump, and a refrigerant in a low concentration absorption liquid by a heating source, A low temperature regenerator which separates the medium absorbent liquid into a high concentration absorbent liquid and a vapor refrigerant, and the condenser heat exchanger tube, a condenser and an evaporator heat pipe supplied with the high temperature steam refrigerant from each regenerator, and the liquefied refrigerant liquefied in the condenser An evaporator for evaporation under reduced pressure, an absorber installed in the evaporator and having the absorber heat pipe to absorb the vapor refrigerant evaporated in the fraud evaporator into the high concentration absorbent liquid supplied from the low temperature regenerator, and the low concentration absorbent liquid in the absorber to the high temperature regenerator. With a rotating solution pump Is an outdoor unit having an absorption circuit, a cold water pump for flowing cold water through the evaporator heat pipe, an outdoor controller for controlling the cooling water pump, the heating source, and the cooling water pump, a blower fan, and cold water from the evaporator heat pipe. It consists of an indoor heat exchanger supplied with a high temperature regenerator, a low temperature regenerator, an absorber, and an evaporator in the form of a bell, and installs a condenser connected to the cooling water circuit of the absorber at the upper part, and a burner part as a heating source at the lower part of the regenerator The main body of the air conditioner, which is equipped with a dome type boiler, was constructed.

In order to further miniaturize the above-mentioned absorption type air conditioner, it is necessary to reduce the size of the main body and the configuration which does not have to provide the cold and hot water circuit necessary for installing a conventional indoor unit.

[Problem to Solve Invention]

Although the large model of the above-mentioned absorption type air conditioner has been put into practical use, it is preferable to miniaturize from the viewpoint of the diversification of energy resources and to apply it to the home air conditioner. In the miniaturization, it is composed of a high temperature regenerator, a low temperature regenerator, an absorber, a condenser, and an evaporator. The main body of the vertical structure has the evaporator located at the outermost part to increase the diameter of the main body, there is unnecessary space in the condenser part, and the indoor unit must be installed separately, and the circulation water circuit and the cold water pump are supplied with cold water from the evaporator coil. There is a disadvantage to be installed.

The present invention is to minimize the unnecessary space, and to reduce the size of the main body to devise a device that does not require the hot and cold water circulation circuit and the hot and cold water pump according to the indoor unit installed in the small size, especially in the home, a very small absorption type air conditioner in the home.

[Means for solving the problem]

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention employ | adopted the following structures.

That is, first, a high temperature regenerator 4 for vaporizing the refrigerant in the low concentration absorbent liquid by the heating source and separating the medium absorbent liquid and the vapor refrigerant, and the high temperature regenerator 4 are contained, and the medium absorbent liquid contains the high concentration absorbent liquid and the vapor. An absorber containing a low temperature regenerator 5 separated by a refrigerant and a high concentration absorbent liquid containing the low temperature regenerator 5 and separated from the low temperature regenerator 5 by a tray device to absorb the refrigerant vaporized in the evaporation system 3 ( 2) The refrigerant condensed in the condenser 8 includes the absorber 2 and the heat pipe is connected in an annular shape to guide refrigerant vapor generated from the high temperature regenerator 4 and the low temperature regenerator 5 into the condenser 8. The condenser (8) condensing the refrigerant supplied from the low temperature regenerator (5) and the top of the evaporator (3) and the top of the annular evaporator (3) to the tray on the heat transfer tube to form a liquid film on the evaporator heat transfer tube to facilitate the evaporation of the refrigerant. ) The main body 11 having an annular condensation coil on the evaporator 3 and the evaporator 3 for receiving and evaporating the refrigerant condensed in the condenser 8 are separated from the main body 11. do.

The evaporator (3) is configured such that the refrigerant condensed in the condenser (8) flows into the evaporator tube (301) placed horizontally in the evaporator above the evaporator (3) and sequentially into the evaporator tube (301) in the downward direction. The evaporation tube 301 has a circular tube shape and has a plate-shaped heat exchange fin 302.

The inside of the evaporator 3 is connected to the inside of the absorber 2 by a pipe so that the vapor evaporated from the evaporator 3 enters the absorber 2 and has a structure in which it is absorbed in a high concentration of the absorption solution.

In addition, the evaporator (3) flows the air in the room by the blowing fan (303) and passes the plate-shaped heat exchange fin (302) outside the heat exchanger tube (3) cooled by the evaporation of the refrigerant to cool the air. It has a structure of cooling by flowing into the room.

Second, during the heating operation, the heating switching valve 902 installed at the inlet of the solution tube going to the low temperature regenerator 5 through the heat exchanger under the high temperature regenerator 4 is closed, and the hot steam generated in the high temperature regenerator 4 is closed. It is introduced into the evaporator (3) to introduce the indoor air to the heat exchange fins 302 installed outside the evaporator (3) to be supplied back to the room to perform the heating.

[Action]

<About claim 1>

The rare solution in the boiling unit under the high temperature regenerator 4 heated from the gas burner 414 which is a heating source under the absorption air conditioner main body boils to generate steam refrigerant, and the concentrated solution concentrated in the high temperature reclamation unit 5. Is sprayed outside the refrigerant vapor separator (501) surrounding the low temperature regenerator (4) to the outside through the solution heat exchanger (701), the heat source outside the refrigerant vapor separator (501) heated by a high temperature refrigerant vapor By regenerating again, it becomes a high concentration solution and flows into the absorber 2 having the annular absorbing coil 201 and is sprayed outside the coil of the absorber 2 so that the refrigerant evaporated in the evaporator 3 forms a liquid film outside the absorber coil. It is absorbed by the high concentration absorbent liquid and becomes a rare solution, which is collected under the absorber 2.

The collected rare solution is introduced into the boiler again through the solution heat exchanger 701 by the solution pump 7 connected to the lower part of the absorber 2 to have an absorption solution regeneration cycle.

The high temperature refrigerant vapor vaporized by the high temperature ashing machine (4) is condensed by the cooling water flowing into the condenser (8) consisting of an annular coil and flowing into the condenser coil, the generator refrigerant vapor in the low temperature regenerator (5) The condenser 8 flows into the low temperature regenerator 5 and the condenser 8 which is open.

The refrigerant condensed in the condenser 8 is stored in the refrigerant storage container 802 below the condenser 8, and the refrigerant in the refrigerant storage container 802 is installed separately from the main body 11 by the refrigerant supply valve 901. The refrigerant evaporated by flowing into the evaporator tube 301 under low pressure in the evaporator 3 and the evaporator heat exchanger tube opened is introduced into the absorber 2 into the evaporator 3 and the open-heated tube and sprayed outside the evaporation coil. Absorbed in high concentration solutions.

The evaporator heat exchanger tube 301 is cooled by evaporation of the refrigerant, and the air introduced from the indoor unit by the blower fan collides with a plate heat exchange fin 302 installed outside the evaporator heat exchanger tube. Cool it.

<About claim 2>

When the heating and cooling valve 902 is installed in the pipe connected to the solution heat exchanger in the high temperature regenerator during the heating operation, by contacting the cooling and heating switching valve during the heating operation to prevent the solution flow into the liquid heat exchanger 701, the heated refrigerant vapor is a solution It is separated from the refrigerant separator and flows into the condenser, and the hot steam is introduced into the evaporator through the refrigerant supply pipe, and the air introduced from the room is introduced into the room through the heat exchanger with the evaporator by the blower fan to heat the room. During implementation, the refrigerant condensed through heat exchange in the evaporator is re-introduced into the boiler by the solution pump to be reheated and the heating cycle is maintained.

1 is an external view of an absorption type heating and cooling device according to an embodiment of the present invention.

2 is a system diagram of the absorption air-conditioner

3 is a principle diagram of the absorption type heating and cooling device according to an embodiment of the present invention

4 is an operation diagram when the absorption type air conditioner is cooled in operation

5 is an operation diagram when the absorption type air conditioner is heated by heating.

* Description of the symbols for the main parts of the drawings *

A-Absorption Air Conditioning Unit

1-Regenerator 2-Absorber

3-Evaporator 4-High Temperature Regenerator

5-Low Temperature Regenerator 6-Indoor Unit

7-solution pump 8-condenser

9-Flow control valve 10-Cooling tower

11-Body 701-Solution Heat Exchanger

<About claim 1>

The structure of claim 1 is to allow the evaporator and the indoor unit to function as a single device. The installation of the indoor unit eliminates the need for a separate hot / cold water circulation pump and a cold / hot water circuit, and eliminates unnecessary space in the condenser. It is composed of a single unit, it is easy to configure the ultra-small absorption type air conditioner.

<About claim 2>

A heating / heating switching valve is installed in the piping of the solution heat exchanger from the high temperature regenerator to close the heating / heating switching valve during heating operation, and the heating operation is performed by flowing high temperature steam through the condenser to the evaporator for simple heating operation and high temperature steam. The heating efficiency can be increased by introducing a heating operation. In addition, in the conventional heating method of the absorption type cold and hot water heater, the solution of the high temperature regenerator is introduced into the absorber and the evaporator separated by the eliminator to heat the evaporator coil and circulate the hot water in the evaporator coil to perform the heating operation so that the evaporator coil is exposed by the solution. Although it was inevitable to be left to be contaminated, in the present invention, since only water or steam, which is a refrigerant, is introduced into the evaporator, the evaporator heat pipe is not contaminated by the solution, and there is no heat loss through the absorber. In the conventional heating method, the inlet and the outlet for introducing a high temperature solution into the absorber and the evaporator are in the same direction, so that the solution and the heating water flowing in the evaporator coil cross each other and heat exchange is not possible, and the circulation of the solution in the absorber and the evaporator is poor. As a result, the heating efficiency is lowered, but in the present invention, the high temperature steam and the refrigerant water are circulated sequentially to lower the thermal efficiency.

[Examples of the Invention]

An embodiment of the present invention will be described with reference to FIGS. 1 to 5.

As shown in the figure, the domestic absorption type air conditioner (A) has a rectangular appearance and the indoor unit and the outdoor unit are integrated, and the figure A is provided with a cooling tower fan to the outdoor side. In Figure B, the control box of the absorption air-conditioning unit protrudes on the front side to the indoor side and the opposite side to the outside side, the lower side slit is a passage for intake of indoor air, and the upper side is an outlet for discharging the cooling / heating air. The control box is equipped with a knob to control the output of the cooling and heating, and controls the combustion amount of the burner is configured to adjust the heating and cooling temperature by comparing the set value and the measured temperature.

The present invention is characterized in that the indoor unit and the outdoor unit is an integrated unit, as shown in FIG. 2, the interior of the domestic absorption type air conditioning system is composed of a cooling tower, a main body, and an evaporator.

2 shows an embodiment in which an absorption air conditioner is installed on a wall, and the air circulation plate 303 sucks air in the room, and exchanges heat with the evaporator to supply cold air (or hot air) to the room. Take form.

Cooling water circuit and outdoor unit controller. The gas burner 414, the high regeneration device 4, the low regeneration device 5, the condenser 8, the absorption liquid circuit which has the solution pump 7, the evaporator 3, and the cooling tower 10 are provided.

The lower part of the high temperature regenerator has a dome-shaped boiler 1, which is heated by combustion heat in the burner, and the upper part is composed of a blowout cylinder 401 having a cylindrical behavior. The high temperature regenerator is surrounded by the steam refrigerant separator 501, and serves as a heating part of the low temperature regenerator.

The vapor coolant separator is a structure included in the low temperature regenerator, the low temperature regenerator is surrounded by an absorber composed of an annular absorbing coil 201, and is separated by a cylindrical separator 502.

The absorber is constituted by the outer wall of the main body to constitute the main body.

The upper part of the main body has a condenser composed of an annular condenser coil 801 connected to an annular absorber coil.

A solution heat exchanger 701 is attached to the outer wall of the main body to increase the efficiency of the absorption type air conditioner.

The evaporator is connected to the refrigerant pipe 902 for introducing the refrigerant supplied from the condenser located on the upper side of the main body and is connected to the evaporator tube 301 of the evaporator. The outside of the evaporation tube 301 is connected to the plate heat exchange fin 302 and the longitudinal direction of the plate heat exchange fin 302 is provided perpendicular to the evaporation tube 302.

The indoor unit is configured to suck indoor air by the receiving fan 303 in parallel with the evaporator 3 and to supply air having undergone heat exchange to the room.

The annular coil of the absorber 2 is connected to the cooling water circuit and connected to the cooling tower 10 cooling water circuit.

The absorption air-conditioner is supplied to the burner 414 by supplying gas through the solenoid valves 411 and 412 and the gas proportional control valve 413, and the burner is a bunsen gas burner. The registered solution 1 is heated to heat the low concentration solution (58%) in the high temperature regenerator 5. During the heating operation, the solution in the low temperature regenerator 4 is heated so that the high temperature refrigerant vapor rises upward of the blowout container 401 long drawn on the high temperature regenerator 4 to heat the steam refrigerant separation tank 501 and take out the high temperature regenerator. It moves to the condenser 8 through the refrigerant increase period located between the passage steam refrigerant separator 501.

During the heating operation, the heating switching valve is opened so that the high-temperature medium concentration solution (60%) flows into the high temperature heat exchanger (5) and sprinkles the steam refrigerant separator (501) on the upper and the outside through an orifice on the upper part of the low temperature regenerator (5). And is regenerated by the heat source heated by the high temperature refrigerant vapor generated in the low temperature regenerator (4). Here, the generator refrigerant vapor moves to an open gap between the upper part of the low temperature regenerator (5) and the condenser (8), condenses, the solution is further concentrated, and this high concentration solution is passed through the low temperature solution heat exchanger (4) to the absorber (2) absorption coil. It is introduced into the upper portion 201 and sprinkled onto the absorber 2 by the tray device, and scattered on the absorption coil 201.

The refrigerant condensed in the condenser (8) is supplied to the evaporator by the refrigerant supply valve 901, flows into the heat transfer pipe 301 of the evaporator (3) long in the horizontal direction is provided with an evaporator heat transfer tube 301 adhesively from the top to the bottom ) To form a flow path that flows down.

The evaporator 3 usually evaporates the refrigerant at a low pressure of 6.0 mmHg to cool the evaporator display tube 301, and the evaporated refrigerant moves to the absorber 2 through the absorber 2 and the open tube, and is dispersed in the absorber coil. Absorbed in high concentration absorbing solution.

The low concentration absorbing solution absorbing the refrigerant enters the low temperature heat exchanger 702 by the solution pump 7, and the high concentration solution entering the absorber 2 through heat exchange with the high concentration solution introduced from the low temperature regenerator 5 lowers the temperature. Increasing the temperature of the low concentration solution flows into the high temperature heat exchanger (703), heat exchanges with the high temperature medium concentration solution flowing from the low temperature regenerator (4) flows into the low temperature regenerator (4) to form a solution cycle to continue the cooling operation .

The cooling water circuit connected to the annular heat pipes of the condenser (8) and the absorber (2) is connected to the cooling tower (10) with the cooling tower fan (10), the cooling water tank, the cooling water pump, the absorber heat pipe, and the condenser heat pipe in an annular order. In the heating operation, the cooling water pump is operated to radiate heat circulating and absorbing the cooling water to the outside.

In the heating operation, the air-conditioning valve 902 is closed in the pipe connected to the solution heat cooler in the low temperature regenerator 4 under the low temperature regenerator 4 to prevent the solution from entering the solution heat exchanger 701. The high temperature refrigerant vapor is separated from the solution refrigerant separator and flows into the condenser (8), and the refrigerant vapor is introduced into the evaporator (3) through the open refrigerant supply valve (901) of the refrigerant supply pipe and the evaporator heat pipe in the evaporator (3). Refrigerant condensed by heat exchange in the evaporator 3 while heating the air 301 and the air introduced from the inside is heated by introducing a heated air into the indoor unit through heat exchange with the evaporator 3 by a blower fan. Is reintroduced into the boiler by the solution pump, reheated and the heating cycle is maintained.

[Effects of the Invention]

By introducing indoor air into the blower fan, the heat exchanged air is introduced into the room through heat exchange with the evaporator heat exchanger tube 301, so that a separate indoor unit and a cold water circuit are not required.

And, without installing the heating tube in the air-conditioning unit is installed in the piping connected to the solution heat exchanger from the high temperature regenerator in the heating pipe, close the air-conditioning valve in the heating operation to prevent the solution from flowing into the solution heat exchanger The refrigerant vapor is separated from the solution refrigerant separator and flows into the condenser (8), and the hot steam is introduced into the evaporator (3) through the refrigerant supply pipe, and the air introduced from the room is transferred to the indoor unit through heat exchange with the evaporator by a blower fan. The hot air is introduced into the room to be heated.

Claims (2)

The evaporator is arranged in a vertical shape including a high temperature regenerator, a steam refrigerant separator, a low temperature regenerator, and an absorber, and is installed separately from the absorption type air-conditioning main body having a condenser and a heating part on the upper part, and the evaporator is a circular horizontal evaporator heat pipe. It is configured to open the inside of the evaporator by installing a plurality from the top to the bottom, the outside of the evaporator heat pipe installed a plate-shaped heat exchange fin, by introducing the air in the blower fan to the heat exchanged air through heat exchange with the evaporator heat pipe Absorbing air conditioning apparatus, characterized in that configured to flow into the room. The air conditioner according to claim 1, wherein a heating / heating switching valve is installed in the pipe connected to the solution heat exchanger in the high temperature regenerator without installing a separate heating tube, and the heating and closing valve is closed during heating operation to prevent the solution from flowing into the solution heat exchanger. The refrigerant vapor is separated from the solution refrigerant separator and flows into the condenser, and the hot steam flows into the evaporator through the refrigerant supply pipe, and the air introduced from the room is heated to the indoor unit through heat exchange with the evaporator by the blower fan. Absorbing air conditioning apparatus characterized in that the heating operation by flowing into.