ESER, Bakioğlu (Manisa Organize Sanayi Bölgesi, Cumhuriyet Cad. No:1, Manisa, TR)
| REQUIREMENTS 1- The invention is a cooling system having independent operating several cooling circuits (13,14,15). The invention involves a cooler (1 ) with energy saving and environment friendly multi-cooling circuits with an electronic thermostat developed in order to cover the cooling demand with less energy consumption ensuring the operation of one or more of the cooling circuits (13,14,15) based on the required cooling load with the temperature values transferred from the heat sensors (8,22,30,12) located inside the electronic thermostat/thermostat (11), the cooling cabin (10) and on the evaporators (6,20,28), and the features of each cooling circuit (13,14,15) are characterized as follows; • That fact that it covers the utilization of the cooling agent R600a, which provides the cooling cycle inside the compressor (2,16,24), condenser (4,18,26), expansion device (5,19,27), evaporator (6,20,28), return pipe (9,23,31) located inside each cooling circuit (13,14,15); 2- complying with the Requirement 1 , that it is a cooler (1) containing energy saving and environment friendly multi-cooling circuits with an electronic thermostat; characterized with the feature that it is designed in following manner: based on demand in order to minimize the volume covered by the cooling circuit parts placed on the cooler and reduce the materials, production and operations costs, the condensers (4,18,26) and/or evaporators (6,20,28) of the circuits may be connected successively and a single condenser fan (3,17,27) and a single evaporator fan (7,21 ,29) may be used. |
Technical Area:
This invention is related with an energy saving and environment friendly cooling system used for long-term storage of foods and similar products preventing their spoilage or presentation of products to the customers in the required consumption heat.
Known Status:
Through the development of our today's technology, all our daily works are done by means of electrical and electronic devices. For example coolers, washing machines, electrical water heaters, electrical ovens, machinery used in the industry etc. This condition is continuously increasing the electricity utilization and consequently the need for electric power. The limited quantity of energy supply despite to the increasing demand results in increase of the energy prices. Therefore the demand to energy saving devices capable to perform the same function with less energy is increasing more and more every passing day.
On the other side, the harmful gases released by the humans during the industrialization process are harming the ozone layer and causing to globular heating and are causing to unfavorable conditions for the life on earth.
A cooler oriented to this aim includes an evaporator in which the cooling liquid evaporates taking heat from the inside of the cabin being cooled. The suction pipe and cooling liquid in gas phase is sucked from the evaporator to the compressor and is pressed to the condenser by the pressure and heat raised by the compressor. Inside the condenser, the cooling liquid in gas phase condensates releasing heat to the atmosphere. The cooling liquid, which enters in liquid phase into the evaporator passing through the expansion device, where its speed is controlled reducing its heat and pressure, thus the cycle continues. In order to increase the effectiveness of the heat transfer, fans ensuring the air flow from the surfaces of the condenser and evaporator may be used.
The utilization of a multi-cooling circuit for the cooling of a cooling cabin without being separated by means of any separator developed for the long term storage of foods and similar products without spoilage or presentation of products to the customers in the required consumption heat is known in the technique. During these applications the time necessary to reach the required cabin-inside temperatures is reduced, but the power consumption increases.
CFC (chlorofluorocarbon) containing cooling agents have found years long common areas of utilization, due to the fact that they are not inflammable and non-toxic, and their cheapness. However, their utilization is prohibited by means of the Montreal Protocol entered into force after detection that CFCs are harmful for the ozone layer. In order to explain the harm caused to the ozone layer by the cooling liquids; in this respect the cooling liquid R600a has found a common area of utilization, because of its quite lower ODP and GWP values compared to its equivalents in the same application area. Further due to its most negative feature compared to its equivalents, the utilization of more than 150 gr of the cooling agent R600a in one single cooling circuit for home or commercial type coolers is prohibited by safety norms.
The cooling capacity of the compressor and quantity of the used cooling liquid to be used is increased as well as the cooling load of the cooler increases. This situation increases the demand for systems, which are reducing the release of harmful gases to the environment and further reducing the power consumption.
Together with increase of the sensitivity to the environment, the increasing demand for CFC-free coolers resulted in the fact that compressor manufacturers have intensified themselves to compressors operating with environment friendly cooling agents. To this extent, high COP values have been obtained in compressors operating particularly with the cooling agent R600a. Besides the common utilization of the cooling agent R600a, the recent status of cooling systems using R600a is, that one R600a has to be used for every volume. Its multi-utilization for cabins with single volume does not exist. Objective of the Invention:
The objective of this inventions is cooling of a cooling cabin, without being separated by means of any separation and developed for the long-term storage of foods and similar products preventing their spoilage or presentation of products to the customers in the required consumption heat, by means of several independent cooling circuits, and ensuring reduction of the enterprise costs by means of saving from the electrical power required for cooling.
Another objective of this invention is to provide an environment friendly cooling system not harmful to the ozone layer and ineffective on the globular warming, depending on the low ODP and GWP values of the cooling agent R600a.
A further objective of this invention is to increase the cooling capacity through using the R600a, which utilization more than 150 gr in one single cooling circuit for home or commercial type coolers is prohibited, in several independent multi-cooling circuits.
A further objective of this invention is to ensure that the activation and deactivation of the cooling circuits at the same time or at different times based on the required temperature using an electronic thermostat and a heat sensor inside the cooling system.
For this objective the invention subject object consists from an energy saving and environment friendly cooling system with an electronic thermostat. Features of subject cooling systems are;
Multi-cooling circuits consisting each from a cooling circuit, compressor, condenser fan, condenser, expansion device, evaporator fan, evaporator, return-pipe An environment friendly cooling agent R600a in each cooling circuit Electronic thermostat, Heat sensor
Explanation of the Figures:
Enclosed figures have been created in order to constitute a model for a cooler involving an energy saving and environment friendly multi-cooling system with an electronic thermostat.
These figures are;
Figure 1 , Front view of a cooler involving an energy saving and environment friendly multi-cooling circuit with an electronic thermostat.
Figure 2, Front view of a multi-evaporator system characterized by being designed with evaporators connected to each other on which air is blown by one evaporator fan.
Figure 3, Front view of a condenser system characterize by being designed with condensers connected to each other on which air is blown by one condenser fan.
Reference Numbers of the Parts seen on the Figure:
The parts shown on the figures are numbered and their equivalents are mentioned. Accordingly;
1- A cooler involving energy saving and environment friendly multi cooling circuits with an electronic thermostat 2- First cooling circuit's compressor
3- First cooling circuit's condenser fan
4- First cooling circuit's condenser
5- First cooling circuit's expansion device
6- First cooling circuit's evaporator 7- First cooling circuit's evaporator fan
8- First cooling circuit's sensor
9- First cooling circuit's return-pipe 10-Cooling cabin 11 -Electronic thermostat/thermostat
12-Cabin sensor
13-First cooling circuit
14-Second cooling circuit 5 15-X... cooling circuit
16-Second cooling circuit's compressor
17-Second cooling circuit's condenser fan
18-Second cooling circuit's condenser
19-Second cooling circuit's expansion device I O 20-Second cooling circuit's evaporator
21 -Second cooling circuit's evaporator fan
22-Second cooling circuit's sensor
23-Second cooling circuit's pipe
24-X... cooling circuit's compressor 15 25-X... cooling circuit's condenser fan
26-X... cooling circuit's condenser
27-X ... cooling circuit's expansion device
28-X ... cooling circuit's evaporator
29-X ... cooling circuit's evaporator fan 0 30-X ... cooling circuit's sensor
31 -X ... cooling circuit's return-pipe
Detailed Explanation of the Invention: 5 In figure - 1 , a representative application manner of a cooling system (1) involving an energy saving and environment friendly multi-cooling circuit with an electronic thermostat is given. A cooler (1 ) involving an energy saving and environment friendly multi-circuit with an electronic thermostat as mentioned in accordance with this figure, is constituted in each cooling circuit (13,14,15) by a compressor (2,16,24), a 0 condenser fan (3,17,25), a condenser (4,18,26), an expansion device (5,19,27), an evaporator (6,20,28), an evaporator fan (7,21 ,29), a return pipe (9,23,31 ), and an electronic thermostat/thermostat (11 ) controlling the activation and deactivation of these, heat sensors (8,22,30,12) transferring the temperatures of the cooler cabin- inside (10) and the evaporator (6,20,28), a cooling cabin (10), a cooling circuit (13), a second cooling circuit (14), and parts of the x ... cooling circuit (15) and the cooling agent R600a.
In order to be valid for each cooling circuit (13,14,15), regarding the operation of the circuits, the cooling agent RδOOa's temperature and pressure is increased by the first cooling circuit's compressor (2) of the first cooling circuits (13), and is pressed into the first cooling circuit condenser (4) in gas phase. The cooling agent R600a, which exits in expanded condition from condenser (4) of the first cooling circuit being cooled down by the condenser fan (3) of the first cooling circuit, ensuring the air flow in order to increase the heat transfer effectiveness, enters into the expansion device (5) of the first cooling circuit. After its pressure and temperature is reduced the R600a goes from the expansion device (5) of the first cooling circuit to the evaporator (6) of the first cooling circuit. The air sucked with the evaporator fan (7) of the first cooling circuit from the cooling cabin (10) grazing the surface of the evaporator (6) of the first cooling circuit provides heat to the R600a flowing through the evaporator (6) of the first cooling circuit and thus the evaporation of the R600a is ensured. The cabin (10) air being cooled by providing heat to the first cooling circuit's evaporator (6) is pressed to the cooling cabin (10) through the pressing line of first cooling circuit's evaporator fan (7). The R600a being heated up in the evaporator (6) of the first cooling circuit and passing over in gas phase turns through the return pipe (9) of the first cooling circuit to the compressor (2) of the first circuit and thus the cooling cycle continues.
Through the operation of the second cooling circuit (14), the heat and pressure of the cooling agent R600a is raised by compressor (16) of the second cooling circuit and is pressed is gas phase to the condenser (18) of the second cooling circuit. The cooling agent R600a, being cooled down by the condenser fan (17) of the second cooling circuit and exiting expanded from the condenser (18) of the second cooling circuit, in order to increase the heat transfer effectiveness, enters from here into the expansion device (19) of the second cooling circuit. After its pressure and temperature is reduced in the expansion device (19) of the second cooling device, the R600a enters into the evaporator (20) of the second cooling circuit. The air sucked with the evaporator fan (21) of the second cooling circuit from the cooling cabin (10) grazes the surface of the evaporator (20) of the second cooling circuit and provides heat to the R600a flowing through the evaporator (20) of the second cooling circuit, and thus the evaporation of the R600a is ensured. The cooling cabin (10) air being cooled down by providing heat to the evaporator (20) of the second cooling circuit is pressed over the pressing line of the evaporator fan (20) of the second cooling circuit into the cooling cabin (10). The R600a passing in gas phase by being heated up in the evaporator (20) of the second cooling circuit, returns to the compressor (16) of the second cooling circuit through the return pipe (23) of the second cooling circuit, and thus the cooling cycle continues.
Through the operation of the cooling circuit (15) of the X... cooling circuit, the temperature and pressure of the cooling agent R600a is raised and is pressed in gas phase to the condenser (24) of the X .... cooling circuit. The cooling agent R600a exiting expanded from the condenser (26) of the X... cooling circuit being cooled down with the condenser fan (25) of the X... cooling circuit providing air flow in order to increase the heat transfer effectiveness enters from here to the expansion device
(27) of the X... cooling circuit. The R600a enters into the evaporator (28) of the X... cooling circuit after its pressure and heat is reduced in the expansion device (27) of the X... cooling circuit. The air sucked with the evaporator fan (29) of the X... cooling circuit from the cooling cabin (10) grazes the surface of the evaporator (28) of the X... cooling circuit and provides heat to the R600a flowing through the evaporator
(28) of the X... cooling circuit and thus the evaporation of the R600a is ensured. The cooling cabin (10) air being cooled down through providing heat to the evaporator (29) of the X... cooling circuit is pressed into the cooling cabin (10) through the pressing line of the evaporator fan (29) of the X... cooling circuit. The R600a heated up in the evaporator (28) of the X... cooling circuit and passing into gas phase returns to the compressor (24) of the X... cooling circuit through the return pipe (31) of the X... cooling circuit, and thus the cooling cycle continues.
The activation and deactivation of each cooling circuit (13,14,15) is controlled in accordance with the cooling load of the cooling cabin (10) by the heat sensors (8,22,30) located inside the cooling cabin and placed on the evaporator (6,20,28) and/or on various points and the cabin sensor (12) and the electronic thermostat/thermostat (11). Thus the independent operating cooling circuits (13,14,15) are active at the required time and as long as required, and ensures that the required cooling load is covered by minimum energy consumption.
Based on demand, in order to minimize the volume covered by the cooling circuit parts placed on the cooler and reduce the materials, production and operations costs, the condensers (4,18,26) and/or evaporators (6,20,28) of the circuits may be connected successively and a single condenser fan (3,17,27) and a single evaporator fan (7,21 ,29) may be used.
Specialized person of the sector will be able to appreciate and estimate that it is possible to make many modifications regarding this invention namely "a cooler involving energy saving and environment friendly multi-cooling circuits with an electronic thermostat", without giving up from the technical features of the product and without separation its elements. Accordingly, this invention has to be interpreted based on enclosed requirements.
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