WO2019035109A1

WO2019035109A1 - Energy-saving referigerator which controllable by internet of things iot

Info

Publication number: WO2019035109A1
Application number: PCT/ID2017/000003
Authority: WO
Inventors: Bangkit Dadang R SUHERMAN
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-16
Filing date: 2017-09-20
Publication date: 2019-02-21
Anticipated expiration: 2020-02-16

Abstract

A referigerator using liquid latent heat which is able to absorb and distribute low temperature produced by evaporator even when compressor is off. The ability of said liquid to become low temperature absorbent to distribute temperature even when compressor is off shall result produce efficiency in electric consumption. This saves electric energy consumption up to 80.5% than current referigerator. Present invention is also equipped with sensor and thermostat with availability to adjust upper limit and lower limit of, temperature on said referigerator. The refrigerator is also equipped with Internet of Things (loT) technology to ease user in adjusting it remotely. The refrigerator can be used to freeze and store meats, fishes, ice creams, medicines and vaccins which require low temperature, and other goods.

Description

ENERGY-SAVING REFERIGERATOR WHICH CONTROLLABLE BY INTERNET OF

THINGS IOT

Technical Field of Invention

Present invention relates to a referigerator utilized to freeze and cool down foods, meats, fishes, and any goods need to be frozen.

Present invention relates to an effort in energy saving of referigerator using liquid absorbent and low-temp container mounted on wall of the referigerator, also evaporator that located on the referigerator .

Background of Invention

Present referigerator is solely based on cooling process produced by evaporator and resulted in fluid compressor system inside of said referigerator and cooling storage chamber. This process is disclosed in US Patent Application No. 188964.

The system used in referigerator and cooling storage chamber affects to high electric consumption due to said compressor machine keeps running to produce expected low temperature, meanwhile said compressor machine stops running temporarily for couple of minutes depends on temperature gap set up by thermostat .

In present invention, electric consumption can be reduced up to 80.5% by using liquid storage technology and low temperature spreader with predetermined upper limit and lower limit using thermostat controlled by Internet of Things (IoT) . When temperature of evaporator and liquid absorbent reach the lower limit of the set point value, thus IoT commands thermostat to disconnect electric current to compressor machine, such that said compressor machine stops running for a longer time than present referigerator; temperature of evaporator and liquid absorbent increase up to upper limit of the set point value thus thermostat reconnects electric current to compressor machine and compressor machine runs again. This produces lower electric consumption than present referigerator .

Present referigerator system is unable- to make said compressor machine stops running for a longer time and can only stand for couple of minutes, due to temperature of referigerator and cooling storage chamber increases shortly, such that its electric consumption becomes higher than present invention..

Present invention saves energy of referigerator and cooling storage chamber by disposing liquid absorbent and low temperature energy storage. This liquid functions to absorb and store low temperature energy produced by the system inside of refigerator and cooling storage chamber, which is able to replace a function of evaporator to cool down and freeze referigerator and cooling storage chamber. This liquid existance results in a longer time for incremental increase in temperature inside of referigerator, such that compressor idles for longer time.

One case, present invention is compared to vaccin storage according to GB Patent Application No. 1313154.5 and 1313633.8, it has different system. Those three use liquid medium, but different in basic system, type also role of the liquid.

- In vaccin referigerator according to GB Patent Application No. 1313154.5 and GB 1313633.8, its core system is fluid reservoir based cooling system. Meanwhile, present invention utilizes compressor configuration, condensor, evaporator pipes and temperature absorbent liquid.

Liquid used in referigerator referring to GB Patent Application No. 1313154.5 and GB 1313633.8y is ordinary water, mainly functions to distribute temperature inside the machine and becomes a temperature exchanging medium. Whereas the liquid acts as low temperature absorbent according to present invention and functions to maintain and distribute said low temperature energy flow inside of referigerator .

Temperature can be achieved by vaccin storage according to GB Patent Application No. 1313154.5 and 1313633.8 is around 4°C. This temperature is an ideal temperature to store vaccins. It is different in present invention with ability to reach -20 °C. Users of present invention can set upper limit and lower limit of temperature according to user requirement through an Internet of Things (IoT) system.

The Objectives of using the said vaccin storage is limited to store vaccins and bloods. It becomes impossible to store other products like foods or meats in bulk volume due to it's 12,5% by whole storage dimension. This happens due to cooling system of referigerator according to GB Patent Application No. 1313154.5 and 1313633.8 requires a spacious head space and fluid reservoir to flow water, even bigger than its storage. While present invention, its cooling system does not require big space, simply around 17% of total referigerator' s volume, such that capable to cool down goods like foods, meats, or other i

bigger products than vaccins and bloods.

Summary of Invention

Main object of present invention is to save energy up to 80.5% from referigerator by disposing specific liquid that functions as absorbent and low temperature energy storage, which is produced by system and evaporator that located inside of said referigerator and cooling storage chamber.

One object of present invention is to provide a referigerator to cool down and freeze room therein, consists of: — A liquid (10) that functions to absorb, store and distribute low energy temperature inside of referigerator .

- Polyurethane insulation wall (1) with 2.75 inch thickness and 43 kg/meter cubic density that becomes outermost wall of referigerator that attached to liquid box (2) .

- Liquid box (2) with double functions to absorb temperature and distribute low temperature and attached to Interior of referigerator (3) .

- Evaporator pipes (4) that are attached to spots inside of referigerator (3) and to both sides of liquid box (2) . - Sensors of thermostat (5) that are controlled by IoT and located on liquid box (2) and evaporator pipes (4) thus function to detect temperature of evaporator (4) and liquid (10) inside of liquid box (2) .

- Sensor of thermostat (6) that is controlled by IoT and located on condensor (7) thus functions to early detect any failure of referigerator machine system.

- Technology Internet of Things (IoT) (8) that functions to adjust thermostat (9) .

In this embodiment, preferably volume proportion according to Claim 1 is 17% liquid by total volume of referigerator .

More preferably said trapezoid liquid box is intercorelated one each other by evaporator pipe. Most preferably in this embodiment, liquid box is made of alumunium aloy plate (1100) with 0.0315 inch thick.

Brief Description of Drawings

To further describe present invention, these are explanation of figures to explain functions and benefits according to present invention.

Figure 1 shows a position and system of conventional and commercially available referigerator .

Figure 2 shows a position of liquid, evaporator, sensor of thermostat and Internet of Things (IoT) according to present invention.

Figure 3 shows a more detailed shape and position of liquid box and evaporator.

Figure 4 shows a location for sensor of pipes thermostat and liquid (10) .

Figure 5 shows one example of display by thermostat as expected by user of said referigerator .

Figure 6 shows a flow and process to produce a specific liquid (10) . Detailed Description

To obtain optimum results according to present invention, providing liquid (10) in amout of 17% by referigerator capacity on wall inside of referigerator , which is packed into alumunium plate box (1100) with 0.0315 inch thick of said plate. Also the evaporator pipes location which is made of copper with 0.375 inch diameter while length of epavorator pipe is adjusted to capacity of said compressor machine, as shown in figure, so that electric consumption can be reduced around 80.5%.

This energy- saving referigerator mechanism is as folllow, evaporator pipes receive cooling gas compression from circulation of said compressor machine and cools down referigerator chamber as well as the liquid (10) . For initial usage of said cooling machine, it takes time up to 30 hours to achieve predetermined lower limit temperature forf evaporator and liquid, i.e. -20°C. When this state is reached, thermostat will automatically disconnect electric current to compressor.

After compressor is off, liquid (10) will distribute said low temperature energy produced by evaporator pipes when said compressor was on. Liquid (10) will maintain temperature of referigerator chamber until predetermined highest temperature of 1°C for up to 124 hours. Highest temperature according to present invention is yet lower than lowest temperature of present commercially available refigerator.

During 124 hours, temperature of evaporator and liquid increases to predetermined upper, limit. Thermostat then connects electric current to compressor machine, such that the system reruns to cool down evaporator pipes and liquid (10) until they achieve -20 °C for 30 hours.

After temperature of evaporator and liquid achieves predetermined lower limit, thermostat disconnects electric current to compressor machine, and the system stops running, so on, such that electric consumption of freezing machine or freezer box can be reduced up to 80.5% by following calculation: Duration of running system: 30 hours Duration of idle system: 124 hours

Total duration: 154 hours

Percentage of running system: 30/154 X 100 = 19,5%

Percentage of idle system: 124/154X 100 = 80.5%

Such that we gain saving in percentage of 80.5%

Allocation of liquid and evaporator to save energy of referigerator and cooling storage chamber is as follow:

• Providing liquid storage in box shape according to referigeratpr storage box and cooling storage chamber made of alumunium aloy plate (1100) with 0.0315 inch thick.

· Providing a path or slit on outer wall made of alumunium plate with outer diameter from evaporator pipe, cyclic such that there are 7 paths of evaporator pipes on the wall of the referigerator .

• Providing an opening on upper part of said alumunium box with thread which is adjusted to a lid of said opening and that functions to input the liquid into alumunium plate box.

• Providing an opening on lower side of alumunium box with similar dimension on upper part that functions to waste or expel said liquid from alumunium box.

· Installing evaporator pipes on available paths or slits, then connecting to capillar pipe on tip of uppermost row of evaporator pipes, and connecting to sucktion pipe from said compressor machine on lowermost row of evaporator pipes.

• Closing upper part of said alumunium box with a PVC plate to be closure as well as insulator such that there is no low temperature that breaches .

• Installing a digital thermostat into the system.

• Locating the tip of the sensor of the thermostat on the evaporator and liquid.

· Filling insulation room to be 70 milimeter thick and 43 kg/m cubic dense.

• Adjusting lower limit of low temperature of the thermostat, such that once it reaches said predetermined lower limit temperature, thermostat will disconnect electric current to compressor machine, so that said compressor machine stops.

• Adjusting temperature gap of the thermostat, such that when temperature of liquid (10) and evaporator pipes has been increased and achieved predetermined upper limit, thermostat then reconnects electric current to compressor machine; thus said compressor machine runs to decrease temperature of evaporator pipes and liquid (10) .

• Referigerator and cooling storage chamber energy saving are ready to utilize.

An advantege of present invention is, user of present invention gains energy saving up to 80.5%.

Present invention is also equipped with Internet of Things (IoT) technology so user can turn on-off and supervise remotely said machine using a smartphone or Internet of Things site according to present invention. With this technology, user . with records of temperature fluctuation is able to configure the set point in order for turning on and turning off the refrigerator remotely, determine temperature setpoint remotely, and submit warranty request online once any problem occures in said machine to present invention during warranty period. Additional IoT Technology of present invention increases efficiency in remotely supervision also detects any failure in this invention through temperature data recordings which is provided regulerly.

Claims

1. An energy- saving referigerator that is used to freeze and cool down chambers inside thereof, wherein it includes:

- A liquid (10) that functions to absorb, store and distribute low temperature energy inside of referigerator . - Polyurethane insulation wall (1) with 2.75 inch thick and

43 kg/meter cubic dense that becomes outermost wall of referigerator that attached to liquid box (2) .

- Evaporator pipes (4) that are attached to spots inside of referigerator (3) and to both sides of liquid box (2) .

- Sensors of thermostat (5) that are controlled by IoT and located on liquid box (2) and evaporator pipes (4) thus function to detect temperature of evaporator (4) and liquid (10) inside of liquid box (2) .

2. A referigerator according to claim 1, wherein said volume liquid (10) is 17% by volume of chambers of referigerator .

3. A referigerator according to claim 1, wherein liquid box (2) is in form of trapezium, intercorelated one each other and provided evaporator pipe inbetween.

4. A referigerator according to Claim 3, wherein liquid box (2) is filled by liquid (10) as low temperature absorbent from evaorator pipe and functions to distribute low temperature into referigerator chamber when compressor is on or off status.

5. A referigerator according to Claim 3, wherein said liquid box (2) is made of alumunium aloy plate (1100) with 0.0315 inch thick.

6. A referigerator according to claim 1, wherein said evaporator pipes (4) are located on and attached to both sides of liquid box (2) .

7. A referigerator according to claim 1, wherein said sensor of thermostat (6) that mounted on condensor (7) functions to provide early alarm to user by sending a note displayed on user's smartphone once abnormal temperature incremental of condensor as a sign of system failure occures .

8. A liquid (10) according to claim 1 as a specific liquid is made of specific material and composition.

9. A specific liquid (10) according to claim 8 consists of 7 chemical substances and water as solvent media with specific composition.

10. A specific liquid (10) according to claim 8 used in referigerator contains: -CH₂-COOH, C₃₅H₄₉0₂₉, CH₂CH₂OH, Ba(OH)_2i C₇H₁₂N₂0₄, NaCl, H₂0, and CH₂OH.

11. A specific liquid (10) according to claim 8 until claim 10, wherein said composition for each chemical substance is:

- -CH₂-COOH: 0.3 - 0.9%

- C₃₅H₄₉0₂9_: 0.3 - 0.9%

- CH₂CH₂OH: 0.3 - 0.9%

- CH₂OH: 0.3 - 0.9%

- Ba (OH) 2 : 0.01 - 0.06%

- C₇H₁₂N₂0_4: 0.1 - 0.5%

- NaCl: 1.5 - 2.95%

- H₂0: 89.2 - 94.8%

12. A specific liquid (10) according to claim 8 until claim 11, wherein its procedure is as follow:

- Heating H₂0 up to 80°C;

- Introducing -CH₂-C00H, C₃5H₄₉0₂9, CH₂CH₂OH, and CH₂OH simultaneously, then stirring with minimum 1500 rounds per minute by a mixer for 5 minutes;

- Mixing NaCl with stirred for 5 minutes. - Introducing Ba(OH)₂ and C₇H_{12 2}O₄ with stirred for 20 minutes total time of mixing.

- Standing still said liquid for 12 hours, so it is ready- to use .

13. A specific liquid (10) according to claim 2, in addition to present invention, it is available to use for another purpose, i.e ice cube replacement that packed inside a box and plastic bottle or plastic wrap to store bloods, mother milks, vaccins, meats, fishes and other usage required low temperature .