CN101476794A

CN101476794A - Internally heating absorption type refrigeration system

Info

Publication number: CN101476794A
Application number: CNA2007103055097A
Authority: CN
Inventors: 张爱民; 郭庆松; 刘春伟
Original assignee: HEBEI PRIME ELECTRIC CO Ltd
Current assignee: HEBEI PRIME ELECTRIC CO Ltd
Priority date: 2007-12-22
Filing date: 2007-12-22
Publication date: 2009-07-08

Abstract

The invention provides an internal heating absorption refrigeration system, which mainly comprises an absorption refrigeration generator, wherein the generator consists of a U-type concentrated solution pipe which is led out from the lower end of a liquid storage device, a bubble pump pipe which is welded to the rise end of the U-type concentrated solution pipe, as well as a dilute solution pipe of which the lower end coats the concentrated solution pipe and the upper end is connected with a rectifier; a heating jacket which is parallel to the concentrated solution pipe and the bubble pump pipe, has an sealed upper end and an opened lower end and is welded to the wall of the dilute solution pipe is arranged between the outer wall of the concentrated solution pipe and the inner wall of the dilute solution pipe; and an internal generator heating device consisting of a heating device is arranged in the heating jacket. The system has the characteristics of high conversion efficiency, good refrigeration performance, energy conservation, high efficiency and the like, and is widely applied to various absorption refrigeration systems.

Description

The absorption system of inner heating

Technical field the present invention relates to absorption-diffusion type Refrigeration Technique, particularly relates to a kind of absorption system of inner heating.

In the technical background prior art, in the absorption-diffusion type refrigeration system, the bushing type generator that is used for vaporized refrigerant, all adopting electrothermal device or combustible gas etc., is the concentrated solution heating through generator outer tube wall, weak solution and concentrated solution tube wall, and the concentrated solution temperature is raise, the airlift pump that produces bubble and pass through in the generator is vaporized, is evaporated, the realization ammonia separates with weak solution, and the ammonia after the evaporation by the circulation and the power conversion of rectifier, condenser and evaporimeter, reaches the refrigeration purpose again.This heater places the mode of heating outside the generator cavity, not only environment is discharged suitable used heat, form certain thermal losses, and the heat of generator is given in conduction, also heat-conducting block, generator outer tube wall, weak solution and concentrated solution tube wall need be passed through, heat concentrated solution could be acted at last.This heat exchange pattern layer of structure is too much, and thermal resistance is bigger, also has suitable thermal losses.This shows, can by change energy consumption that the generator mode of heating improves absorptions-diffusion type refrigeration system greatly, defective such as conversion efficiency is lower, refrigerating capacity is little, research and develop that a kind of conversion efficiency height, refrigeration performance are good, the absorption-diffusion type refrigeration system of efficient energy-saving, make sorption type refrigerating technology be able to extensive use.

The purpose of the absorption system research and development of goal of the invention inner heating of the present invention, provide a kind of no multilayer thermal-conduction resistance, do not have a large amount of waste heat discharges, toggle speed is fast, the energy-saving and environmental protection type absorption system of low cost of manufacture is to enlarge the range of application of sorption type refrigerating technology.

Description of drawings Fig. 1 is the absorption system structural representation of the inner heating of PTC pottery

Fig. 2 is the local enlarged diagram of absorption system generator of the inner heating of PTC pottery

Fig. 3 is the absorption system structural representation of the inner heating of electrothermal tube

Fig. 4 is the local enlarged diagram of the absorption system generator of the inner heating of electrothermal tube

Among the figure: 1-reservoir; 2-concentrated solution pipe; 3-bubble pump line; 4-rectifier

5-weak solution pipe; 6-heating jacket; 7-heater element

The technical scheme of the absorption system of technical scheme inner heating of the present invention mainly comprises: The absorption system of inner heating, the U-shaped concentrated solution pipe 2 by draw reservoir 1 lower end is welded in U The bubble pump line 3 that type concentrated solution pipe rises and holds, the lower end is coated in concentrated solution pipe, upper end and links to each other with rectifier 4 The generator of the absorption refrigeration that forms of weak solution pipe 5; Between concentrated solution pipe outer wall and the weak solution inside pipe wall, Be provided be parallel to concentrated solution pipe and bubble pump line, upper end closed, the lower end is uncovered and be welded in the weak solution tube wall Heating jacket 6, the generator inner heating device that heater element 7 consists of is housed in the heating jacket.

The heater element of absorption system can adopt the PTC ceramic heater, also the electrothermal tube that can adopt resistance wire to turn to.

The beneficial effect of the absorption system of beneficial effect inner heating of the present invention:

1, reduces the discharging of multilayer thermal-conduction resistance and used heat, can reduce heat energy loss significantly;

2, improve the toggle speed of system and the sensitivity of temperature control, improved the refrigeration performance of refrigerator;

3, simplify the structure of generator, reduced material consumption and manufacturing cost;

4, reduced the volume of generator heat-insulation layer, for the Compact Design and the miniaturization of structure provides condition;

5, cut down the consumption of energy, reduce waste heat discharge, be more suitable for the production of the products for civilian use such as refrigerator, air-conditioning.

Embodiment 1: be the absorption system of the inner heating of PTC pottery, as shown in Figure 1.Concentrated solution from reservoir comes out by the heating of electrothermal device to the concentrated solution tube wall, starts concentrated solution rapidly, and a part of ammonia is separated out from solution, forms bubble and pushes fluid column to the vaporization of bubble pump line, evaporation, and the realization ammonia separates with weak solution.When ammonia steam that is evaporated from airlift pump and steam rise, a large amount of steam are separated out from the ammonia steam, coagulate for the globule flows back to generator the liquid that dilution is flowed out from airlift pump, by the difference in height of generator top and absorber, arrive the absorber upper end by the weak solution return duct.Weak solution is flowed downward by absorber upper end, contact with the hydrogen that comes out from reservoir, ammonia gaseous mixture, absorbs ammonia wherein, and solution concentration is increased, and flows into reservoir after going out absorber, again through solution heat exchanger inflow generator.Ammonia after the evaporation by the circulation of rectifier, condenser and evaporimeter, reaches the refrigeration purpose again.Meanwhile, the weak solution return duct that fits in the concentrated solution pipe is passed to the concentrated solution of being come out by reservoir with heat, improves the concentrated solution temperature that enters generator, prepares heating vaporization once more, evaporation.By electrothermal device directly is arranged at the weak solution tube chamber, can reduce the part thermal-conduction resistance, not only can increase the evaporation capacity of solution, improve refrigeration performance, and can significantly cut down the consumption of energy and manufacturing cost, can be widely used in absorption various refrigeration system.

Embodiment 2: the local enlarged diagram of absorption system generator that is the inner heating of PTC pottery.

Embodiment 3: the absorption system structural representation that is the inner heating of heating tube.

Embodiment 4: the local enlarged diagram of absorption system generator that is the inner heating of heating tube.

Claims

1, the absorption system of inner heating of the present invention, mainly comprise: the U type concentrated solution pipe of drawing by the reservoir lower end, be welded in the bubble pump line that U type concentrated solution pipe rises and holds, the lower end is coated on the concentrated solution pipe, the generator of the absorption refrigeration that the weak solution pipe that the upper end links to each other with rectifier is formed, it is characterized in that: between concentrated solution pipe outer wall and the weak solution inside pipe wall, be provided with and be parallel to concentrated solution pipe and bubble pump line, upper end closed, the lower end is uncovered and be welded in the heating jacket of weak solution tube wall, and the generator inner heating device that heater element constitutes is housed in the heating jacket.

2, by the described inner absorption system that heats of claim 1, it is characterized in that: the openend of heating jacket is welded in the knee that the weak solution tube wall turns to generator, and heating jacket places the weak solution tube chamber of concentrated solution pipe or concentrated solution pipe and bubble pump line outer wall.

3, by the absorption system of the described inner heating of claim 1, it is characterized in that: the heater element in the heating jacket can adopt the PTC ceramic heater, also the electrothermal tube that can adopt resistance wire to turn to.