CN1111269C - Solar water-heater refrigerator composite machine - Google Patents

Abstract

The compound machine of solar water heater and refrigerator belongs to the field of solar energy utilization and is used to supply hot water and make ice at the same time. The compound machine uses two water tanks controlled by timing valves. The device heats the adsorption cylinder of the refrigerator while heating the water in the water tank, and cools the adsorption cylinder with cold water at night. It meets the needs of the adsorption tube to absorb heat during the day and cool at night. The same collector is used to realize the continuous cycle of hot water produced during the day for use at night and ice made at night for use during the day. It organically combines the heat utilization and cold utilization of solar energy. The purpose of sustainable development of green refrigeration and heating has been realized.

Description

Solar Water Heater Refrigerator Composite Machine

The solar water heater and refrigerator compound machine belongs to the equipment used for simultaneously supplying hot water and cooling in the field of solar energy utilization.

Due to the global energy crisis, mankind seeks to explore new energy sources. Due to its unique cleanness and non-pollution and wide geographical distribution, solar energy has revealed the most eye-catching, most widely used, and scientifically related aspects of new energy utilization. The widest new chapter. Among them, solar water heaters have been generally accepted in my country's vast urban and rural areas. In terms of solar refrigeration, foreign countries continue to have research reports in this area, and some prototypes have been put on the market. However, in terms of practicality, solar refrigerators are structurally integrated with absorbers and heat collectors due to their low efficiency. The heat of heating the adsorber has to exchange heat with the outside at night in order to cool the adsorber, so that the adsorbent in the adsorber absorbs the refrigerant to produce evaporative refrigeration, which not only causes waste of energy, but also because it is difficult to solve the problem of high-efficiency vacuum collectors. The problem of heat dissipation at night limits its application in ice machines.

The purpose of the invention is to solve the shortcoming of low efficiency and waste of energy when only using solar water heaters and solar refrigerators. The solar water heater with mature technology is used to heat the absorber of the refrigeration refrigerator, and the same heat collector is used to realize the continuous circulation of hot water produced during the day for use at night, and ice made at night for use during the day, combining solar heat utilization with cooling The organic combination of utilization realizes the goal of sustainable development of green refrigeration and heating. Make one product have multiple uses, achieve the purpose of improving energy utilization and saving energy consumption.

The main content of the composite machine for solar water heater and refrigerator of the present invention is that the composite machine adopts two water tanks controlled by valve timing, separates the adsorber and the heat collector, and puts the adsorption cylinder as the adsorber in the upper hot water tank. While heating the water in the water tank with a high-efficiency vacuum collector, the adsorption cylinder is heated at the same time, and the hot water heated in the adsorption cylinder during the day is circulated to another insulated water tank for users to use hot water at night, and the cold water is circulated to the upper water tank for cooling at night In this way, the adsorption cylinder can absorb heat during the day and cool at night. At night, as the adsorption cylinder is cooled, the activated carbon in the adsorption cylinder begins to absorb the refrigerant in the evaporator, and the evaporative refrigeration process continues until the next morning. Since the refrigerator is equipped with a cooling liquid storage block, the refrigerator can maintain the cooling effect for a long time during the day .

Fig. 1 is the structural schematic diagram of the compound machine of solar water heater refrigerator of the present invention

Figure 2 is a schematic diagram of the structure of the adsorption cylinder

In the figure, 1 is the vacuum tube heat collector, 2 is the upper circulation pipeline, 3 is the lower circulation pipeline, 4 is the upper hot water tank, 5 is the lower hot water tank, 6 is the transparent fiber cover plate, 7 is the adsorption cylinder, 8 is a condenser, 9 and 15 are vacuum valves, 10 is a water supply tank, 11 and 12 are timing valves, 13 is a capillary throttle valve, 14 is a liquid reservoir, 16 is an evaporator, 17 is a refrigerator, 18, 19, 20 Is a valve, 21 is a bracket, 22 is an adsorbent activated carbon, 23 is a refrigerant methanol, 24 is an adsorption cylinder stainless steel shell, and 25 is a central empty pipe.

The concrete implementation of solar water heater refrigerator compound machine of the present invention:

The composite machine is composed of a vacuum tube heat collector 1, an upper circulation pipeline 2, a lower circulation pipeline 3, an upper hot water tank 4, a lower hot water tank 5, a transparent fiber cover plate 6, an adsorption cylinder 7, a condenser 8, a vacuum Valve 9,15, replenishing water tank 10, timing valve 11,12, capillary throttle valve 13, liquid reservoir 14, evaporator 16, refrigerator 17 etc. are formed.

The vacuum tube heat collector 1 is connected to the upper hot water tank 4 through the upper circulation pipeline 2 and the lower circulation pipeline 3, the transparent fiber cover plate 6 is covered on the upper hot water tank 4, and the upper hot water tank 4 is connected to the lower water tank 4 through a timing valve 11. The hot water tank 5 communicates, and the shell 24 of the adsorption cylinder 7 is made of stainless steel into a cylindrical shape, the middle of which inserts a central empty pipe 25 with metal mesh, and the central empty pipe 25 is fixed on the stainless steel shell 24 of the adsorption cylinder by welding. Put adsorbent activated carbon 22 and refrigerant methanol (or ammonia) 23 between the stainless steel shell 24 and the central empty pipe 25, the central empty pipe 25 communicates with the liquid reservoir 14 through the vacuum valve 9, and the central empty pipe 25 and the liquid storage Condenser 8 is installed on the outside of the pipeline connected by device 14, water replenishment tank 10 communicates with upper hot water tank 4 through timing valve 12, liquid reservoir 14 communicates with evaporator 16 in refrigerator 17 through vacuum valve 15, capillary throttle valve 13 In communication, a cold storage block with freezing liquid is housed in the refrigerator 17 .

In the morning, the sunlight irradiates the vacuum tube heat collector 1, and the heated water is stored in the upper hot water tank 4 through the upper circulation pipeline 2. With the increase of radiation, the temperature of the water in the upper hot water tank 4 continues to rise. At this time, the vacuum valve 15 is in the closed state. Since the vacuum tube heat collector 1 is used and the transparent fiber cover is added on the upper hot water tank 4, the heated water temperature can make the adsorbent activated carbon in the adsorption cylinder 7 immersed in the water tank 4 22 Analytic refrigerant methanol 23. At noon, the methanol vapor pressure in the adsorption cylinder 7 reaches the corresponding condensation pressure of the condenser 8, so the methanol vapor condenses into a liquid when passing through the condenser 8, enters the liquid reservoir 14, and then passes through the capillary throttle valve 13 to reduce the pressure After entering the evaporator 16, the temperature in the adsorption cylinder 7 reaches the highest value (80-100° C.) at about 3:00 p.m. and the temperature of the hot water in the hot water tank 4 is relatively stable, so that the analysis process is relatively sufficient. In the evening, the solar radiation disappears. At this time, the timing valve 11 is opened to allow the hot water in the upper hot water tank 4 to flow into the lower hot water tank 5 for use by the user. After the hot water in the upper hot water tank 4 is finished, the valve is closed. 11. Open the valve 12 to allow the cold water in the replenishing water tank 10 to flow into the upper hot water tank 4 to cool the adsorption cylinder 7 . Because the water temperature can be raised when cooling the adsorption cylinder 7, a bypass pipeline can be added through the valve 19 for the user to use warm water, so that the replenishing water tank 10 is communicated with the bypass pipeline to enhance the ability of the cooling adsorption cylinder. At midnight, the vacuum valve 15 is opened, and since the adsorption cylinder 7 is cooled, the adsorbent activated carbon 22 in the adsorption cylinder 7 begins to adsorb the refrigerant methanol 23 in the evaporator 16, and the liquid in the evaporator 16 boils due to the sudden drop in pressure, thus starting The process of evaporative cooling was initiated, which continued until the next morning. Because the cold storage block with refrigerating liquid is housed in the refrigerator 17, the refrigerator can be kept for a long time in the daytime for cooling effect. Close the vacuum valve 15, water valves 12 and 19, thereby completing a cycle of hot water supply and refrigeration. Before the operation of the system, the adsorption cylinder 7 equipped with adsorbent activated carbon 22 must be vacuumized and decomposed before it can be filled with refrigerant methanol 23. The central empty pipe 25 is the channel for refrigerant methanol desorption and adsorption.

During the specific implementation, the existing relatively mature solar vacuum tube collectors (including heat pipe type vacuum tube collectors) are used to design water heaters and adsorption ice-making systems. The adsorption ice maker and the water heater can be connected through pipelines, which ensures that the product can be put into the solar water heater market immediately when the product is sold, and an adsorption refrigerator system can be provided according to the needs of users. The present invention has the following products for users to choose from.

(1) 1m ² collector

This product can produce 60kg of hot water at 80-90℃ in summer, with a daily ice production of 4kg; in winter, it can produce 50kg of hot water at 70-80℃, with a daily ice production of 3kg. The product needs about 20kg of activated carbon and 6kg of methanol. The adsorption refrigerator has a volume of 120 liters. This product is suitable for a family of three.

(2) 2m ² collectors

This product can produce 100kg of hot water at 80-90℃ in summer, with a daily ice production capacity of 7kg; in winter, it can produce 90kg of hot water at 70-80℃, with a daily ice production capacity of 6kg. The product needs about 40kg of activated carbon and 12kg of methanol. The adsorption refrigerator has a volume of 180 liters. This product is suitable for families with a large population.

(3) 3m ² heat collector

This product can produce 150kg of hot water at 80-90℃ in summer, with a daily ice production capacity of 12kg; in winter, it can produce 120kg of hot water at 70-80℃, with a daily ice production capacity of 10kg. The product needs about 60kg of activated carbon and 18kg of methanol. The volume of the adsorption refrigerator is 240 liters, and the volume of the adsorption cylinder is about 120 liters. This product is suitable for small group use.

(4) Special products

In addition to the three products mentioned above, we can also design large-scale systems and solar water heaters and refrigerators for different purposes according to the special needs of users.

The solar water heater and refrigerator combination machine of the present invention uses a solar water heater with mature technology to heat the adsorption cylinder of the refrigeration refrigerator, and uses the same heat collector to realize the continuous cycle that the hot water produced during the day can be used at night, and the ice made at night can be used during the day. , organically combining the heat utilization and cold utilization of solar energy, realizing the multi-purpose function of one product, improving the energy conversion utilization rate, and benefiting energy saving and environmental protection due to the use of solar heating and fluorine-free ice making.

Claims (3)

1. A solar water heater and refrigerator combination machine is composed of a vacuum tube collector 1, an upper circulation pipeline 2, a lower circulation pipeline 3, an upper hot water tank 4, a lower hot water tank 5, a transparent fiber cover plate 6, and an adsorption cylinder 7 , condenser 8, vacuum valve 9, 15, make-up water tank 10, timing valve 11, 12, capillary throttle valve 13, liquid reservoir 14, evaporator 16, refrigerator 17 etc., is characterized in that: vacuum tube heat collector 1 The upper hot water tank 4 is communicated with the upper hot water tank 4 through the upper circulation pipeline 2 and the lower circulation pipeline 3 , the transparent fiber cover plate 6 is covered on the upper hot water tank 4 , and the upper hot water tank 4 is communicated with the lower hot water tank 5 through the timing valve 11 , the adsorption cylinder 7 is horizontally immersed in the upper hot water tank 4, supported by a bracket 21, the replenishment tank 10 communicates with the upper hot water tank 4 through a timing valve 12, and the liquid reservoir 14 communicates with the upper hot water tank 4 through a vacuum valve 15 and a capillary throttle valve 13. The evaporator 16 in the refrigerator 17 communicates. 2. The solar water heater and refrigerator complex machine according to claim 1, further characterized in that the shell 24 of the adsorption cylinder 7 is made of stainless steel into a cylindrical shape, and a central hollow pipe 25 with a metal mesh is inserted in the middle, and the central hollow pipe 25 is It is fixed on the stainless steel shell 24 by welding, and the adsorbent activated carbon 22 and refrigerant methanol or ammonia 23 are filled between the stainless steel shell 24 and the central empty pipe 25, and the central empty pipe 25 communicates with the liquid reservoir 14 through the vacuum valve 9. 3. The solar water heater and refrigerator combination machine according to claim 1 or 2, characterized in that a condenser 8 is installed outside the pipe connecting the central empty pipe 25 and the liquid reservoir 14, and the refrigerator 17 has a cold storage block for refrigerated liquid.

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