KR100836287B1 - Multi refrigerating system - Google Patents

Abstract

A multi-function refrigerating system is provided to facilitate installation by connecting a plurality of refrigerators to an outdoor unit through a screw scheme using a flexible refrigerant pipe. A multi-function refrigerating system comprises a plurality of refrigerators(20,30,40) including a plurality of evaporation units, an outdoor unit(10) including a compressor, a plurality of refrigerant pipes including a supply pipe(51) and a return pipe(52), a pipe connection part(60) and a communication control device. The pipe connection part includes the refrigerant pipes, which are installed between the refrigerators and the outdoor unit. The pipe connection part allows refrigerant to be transferred to a selected refrigerator. The pipe connection part includes a connection member which is installed between the refrigerant pipes.

Description

Compound Refrigeration System {MULTI REFRIGERATING SYSTEM}

1 is a view showing a composite refrigeration system disclosed in Korean Laid-Open Patent Publication No. 2005-0077605.

2 is a view showing the kimchi refrigerator disclosed in US Patent No. 6,615,607.

3 is a view showing a wine cellar disclosed in Korean Utility Model Registration No. 0380906.

4 shows an example of a combined refrigeration system according to the invention.

5 is a view showing an example of a refrigeration cycle constituting a complex refrigeration system according to the present invention.

6 is a view showing an example of connecting the refrigerant pipe of the composite refrigeration system according to the present invention.

7 is a view showing another example of connecting the refrigerant pipe of the composite refrigeration system according to the present invention.

8 is a view showing an example of a circuit diagram of a communication control device for controlling a complex refrigeration system according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: outdoor unit 20: kimchi refrigerator

30: wine refrigerator 40: refrigerator

50: refrigerant pipe 60: pipe connection

The present invention relates to a complex refrigeration system in which a plurality of refrigerators are connected to an outdoor unit including a compressor by a refrigerant pipe, and more particularly to a complex refrigeration system in which refrigerants are circulated between the plurality of refrigerators and the outdoor unit and control signals can be transmitted to each other. It is about.

1 is a view showing a composite refrigeration system disclosed in Korean Laid-Open Patent Publication No. 2005-0077605, wherein the combined refrigeration system includes a refrigerator main body 111 and an outdoor unit 151 of a plurality of refrigerators. The outdoor unit 151 may include a compressor 152, an accumulator 154, a condenser 153, a fan 156, and the compressor 152 may include a variable compressor 153a and a constant speed compressor 153b. have. Each refrigerator includes an indoor unit 141 and an expansion device 44, and the indoor unit 141 includes an evaporator 143 and a fan 145 in the circulation passage 123. A refrigerant distributor 157 and a refrigerant collection tube 158 are provided between the outdoor unit 151 and the indoor unit 111. The refrigerant compressed by the compressor 152 is supplied to the expansion device 144 and the evaporator 143 of each of the refrigerator main body 111 through the refrigerant condenser 155, and through the refrigerant distributor 157. Via 158, returning to compressor 152 through accumulator 154, which allows gaseous refrigerant to be supplied to compressor 152, forms a refrigeration cycle. In addition, Japanese Patent Laid-Open No. H11-063775 discloses an example of a control method of such a refrigeration system. As described above, the cooling method by circulating cold air using the evaporator 143 and the fan 145 is called an indirect cooling method.

On the other hand, there are refrigerators that refrigerate certain deposits, such as kimchi refrigerators and wine cellars, which are appropriate storage temperatures (eg kimchi or kimchi). -0 ° C, wine -15 ° C) is designed to maintain the temperature in the furnace.

FIG. 2 is a view illustrating a kimchi refrigerator disclosed in US Patent No. 6,615,607. The kimchi refrigerator includes a cooling chamber 220, a refrigerant pipe 222, a heater 223, and a cooling chamber 220 surrounding the cooling chamber 220. The compressor 241 and the condenser 242 are placed on the lower portion of the, and the cooling chamber 220 is directly cooled by using the refrigerant pipe 222. This cooling method is called direct cooling method.

3 is a view showing the wine cellar disclosed in Korea Utility Model Publication No. 0380906, the wine cellar is located in the lower part of the storage compartment 307, the shelf on which the wine is placed 372, the storage compartment 307, including a compressor, etc. The apparatus room 304 and the storage room 307 are located above the temperature control unit 310 to control the temperature inside the storage room 307.

An object of the present invention is to provide a complex refrigeration system that is easy to install a refrigerant pipe in which refrigerant is circulated between a plurality of refrigerators and outdoor units.

Another object of the present invention is to provide a complex refrigeration system in which communication control signals are effectively transmitted between a plurality of refrigerators and outdoor units.

The combined refrigeration system of the present invention includes a plurality of refrigerators including a plurality of evaporators, an outdoor unit including a compressor to form a refrigeration cycle together with the evaporators, a flexible refrigerant pipe installed between the refrigerator and the outdoor unit, and the refrigerant to the selected refrigerators. Pipe connections connected to supply; And a communication control device for receiving operation state data of the refrigerators or the outdoor unit, and thus controlling the operations of the refrigerators, the outdoor unit, and the refrigerant distribution means.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view showing an example of a compound refrigeration system according to the present invention, the compound refrigeration system includes one outdoor unit 10, kimchi refrigerator 20, wine cellar 30, refrigerator 40, the refrigerant is The outdoor unit 10 and the kimchi refrigerator 20, the wine cellar 30, and the refrigerator 40 are circulated through the refrigerant pipe 50 and the pipe connecting part 60 made of a flexible material, and a communication control signal is transmitted to the communication line 80. Through it is also transmitted between the outdoor unit 10 and the kimchi refrigerator 20, the wine cellar 30, the refrigerator 40.

5 is a view showing an example of a refrigeration cycle constituting a complex refrigeration system according to the present invention, the outdoor unit 10 includes an accumulator 11, a compressor 12, a condenser 13 along the flow of the refrigerant. The condenser 13 may further include a fan 14, and the accumulator 11 serves to allow the refrigerant in the gas phase to enter the compressor 12. The refrigerant exiting the condenser 13 enters the pipe connection 60 through the supply refrigerant pipe 51, and passes through the pipe connection 60 to one of the kimchi refrigerator 20, the wine cellar 30, and the refrigerator 40. Supplied. This supply is controlled by valves 71, 72, 73. The refrigerant that has passed through one of the kimchi refrigerator 20, the wine cellar 30, and the refrigerator 40 is recovered to the accumulator 11 through a recovery refrigerant pipe 52 and a pipe connection 60. The pipe connection part 60 may be actually provided, but may be understood as a virtual space in which the supply refrigerant pipe 51, the recovery refrigerant pipe 52, and / or the valves 71, 72, and 73 are located. It may be located on the side). On the other hand, the valves 71, 72, 73 may be located on the outdoor unit 10 and / or the refrigerator side according to the control units 15, 28, 38, 48 responsible for the control. The kimchi refrigerator 20, the wine cellar 30, and the refrigerator 40 are respectively connected to the outdoor unit 10 through the supply refrigerant pipe 51 and the recovery refrigerant pipe 52.

Kimchi refrigerator 20 is provided with an evaporator 21, the wine refrigerator 30 is provided with an evaporator 31 and a fan 32, the refrigerator 40 is the evaporator (41A, 41B) and the fan (42A, 42B) ). The refrigerator 40 includes a freezing compartment 43 and a refrigerating compartment 44, in which an evaporator 41A is used for freezing the freezer compartment 43 and an evaporator 41B is used for refrigerating the refrigerating compartment 44. In addition, the refrigerating chamber 40 includes a heater 45 in the freezer compartment 43 and a valve 46 for controlling the supply of refrigerant to the freezer compartment 43 and the refrigerating compartment 44 for defrosting. It is apparent to those skilled in the art that the present invention is not limited to a refrigerator equipped with a kimchi refrigerator, a wine refrigerator, a freezer and a refrigerating chamber, provided that refrigeration or freezing is possible without departing from the basic spirit of the present invention.

In addition, the kimchi refrigerator 20, the wine cellar 30, and the refrigerator 40 are each provided with temperature sensors 27, 37, 47A, and 47B for measuring the temperature. Meanwhile, control units 15, 28, 38, and 48 for controlling the operation of the outdoor unit 10, the kimchi refrigerator 20, the wine cellar 30 and the refrigerator 40, and transmission lines for transmitting and receiving signals therebetween. 81 and the receiving line 82 are provided along the refrigerant supply pipe 51 and the refrigerant recovery pipe 52. The control unit 15, 28, 38, 48 may be provided in each of the refrigerators and the outdoor unit, may be provided in any one or at least one of them, various modifications to the configuration and operation of the control unit is possible, It is explained in detail below. The temperature sensors 27, 37, 47A, 47B are generally located in the air, but may be located in the evaporator or in the evaporator. The compressor 12 may be provided in plural, may be of variable capacity, and the condenser 13 may also be provided in plural.

Therefore, in the case of cooling the freezer compartment 43, the compressor 12 is operated, the refrigerant is supplied to the evaporator 41A via the condenser 13, the supply refrigerant pipe 51, and the recovery refrigerant pipe 52, The refrigerant is circulated through the accumulator 11 to the compressor 12. At this time, the valve 73 is opened, the valves 71 and 72 are closed, and the valve 46 is operated so that the refrigerant is directed to the evaporator 41A. Fan 47A and fan 14 can also be operated together. When the temperature measured by the temperature sensor 47A becomes equal to or less than the set value (for example, -18 ° C), the supply of the refrigerant to the evaporator 41A is stopped.

In the case of cooling the refrigerating compartment 44, the valve 46 is operated so that the refrigerant is directed to the evaporator 41B, and when the temperature measured by the temperature sensor 47B is lower than or equal to the set value (e.g., 3 ° C), The refrigerant supply to the evaporator 41B is stopped.

In the case of cooling the kimchi refrigerator 20, by opening the valve 71 and closing the valves 72 and 73, the refrigerant is supplied to the evaporator 21, and the temperature measured by the temperature sensor 27 is When the set value is lower than the set value (eg 0 ° C.), the refrigerant supply to the evaporator 27 is stopped.

In the case of cooling the wine refrigerator 20, by opening the valve 72 and closing the valves 71 and 73, the refrigerant is supplied to the evaporator 31, and the temperature measured by the temperature sensor 37 is When the set value is lower than the set value (eg 15 ° C.), the refrigerant supply to the evaporator 37 is stopped. The fan 32 may be operated together with the supply of the coolant.

Cooling of each refrigerator may be sequentially performed as described above, but in a state in which a plurality of refrigerators are already operated, when the temperature in the refrigerator measured by the temperature sensors 27, 37, 47A, and 47B is equal to or higher than a set value, Various methods may be used, such as an operation may be performed in a form of supplying a refrigerant to a refrigerator.

6 is a view showing an example of connecting the refrigerant pipe of the complex refrigeration system according to the present invention, the outdoor unit 10, the kimchi refrigerator 20, the wine refrigerator 30, the refrigerator (40) which are located indoors and outdoors so that the refrigerant circulates Coolant pipe 50 of a flexible material is installed between the), a plurality of such refrigerant pipe 50 is installed as necessary, the female screw portion (53a) rotatably installed at one end of the refrigerant pipe (50) is And a male screw portion 53b formed on the other outer peripheral surface of the refrigerant pipe 50 to be engaged with the female screw portion 53a. The female screw portion 53a of the one refrigerant pipe 50 and the other refrigerant pipe 50 are provided. The male screw portion 53b is assembled and connected to communicate with each other.

At this time, the female screw portion 53a and the male screw portion 53b may be formed of a material different from that of the flexible refrigerant pipe 50, and a separate sealing member (not shown) may be inserted to prevent the refrigerant from leaking therebetween. Can be.

Of course, as the refrigerant pipe 50 is formed of a flexible material, it is not preferable that the high-pressure refrigerant flows, but each refrigerator 20, 30, 40 does not operate at the same time, only one by one configured to operate selectively to low pressure Suitable for use

7 is a view showing another example of connecting the refrigerant pipe of the composite refrigeration system according to the present invention, the connecting member 54 is screw assembly between the refrigerant pipes 50 to connect the two refrigerant pipes (50) Connected in a way.

In more detail, male threads 50a having threads are formed on the outer peripheral surfaces of both ends of the refrigerant pipe 50, and the connecting members 54 are rotatable with female threads 54b and 54c at both ends of the connecting pipe 54a, respectively. The male screw portion 50a of the refrigerant pipe 50 and the female screw portions 54b and 54c of the connecting member 54 are installed to engage with each other.

At this time, one female threaded portion 54b of the connecting member 54 is assembled to the male threaded portion 50a of one refrigerant pipe 50, and at the same time, the coupling member 54 is connected to the male threaded portion 50a of the other refrigerant pipe 50. The other side female threaded portion 54c is assembled, and a sealing member (not shown) to prevent the refrigerant from leaking between the male threaded portion 50a of the refrigerant pipe 50 and the female threaded portions 54b and 54c of the connecting member 54. Is installed.

Of course, the refrigerant pipe 50 and the connection pipe (54a) is formed of a flexible material can be easily bent or bent can be installed in a desired position, it may be installed to cover the heat insulator (not shown).

8 is a view showing an example of a circuit diagram of a communication control device for controlling a complex refrigeration system according to the present invention, the outdoor unit control means 15, kimchi refrigerator control means 28, wine refrigerator control means 38, refrigerator control means 48, a communication line 80 or a power line (not shown) through which signals are transmitted is installed along the refrigerant pipe 50.

In more detail, the outdoor unit control means 15 includes the compressor 11 and the outdoor unit controller 15a for generating a control signal for controlling the operation of the valves 71, 72, and 73, and the transmission stage of the outdoor unit controller 15a ( Transmission buffer 15b for inverter buffering and outputting transmission data output from Tx), and receiving terminal Rx of outdoor unit controller 15a by inverter buffering transmission data transmitted from a plurality of refrigerators 20, 30 and 40. It includes a receiving buffer unit 15c to transfer to.

In addition, the kimchi refrigerator control means 28, the wine refrigerator control means 38, the refrigerator control means 48 are all refrigerator control units 28a, 38a, 48a for controlling the operation of the components of each refrigerator, outdoor unit control Each refrigerator transmitter 28b, 38b, 48b and refrigerator receivers 28c, 38c, 48c for transmitting and receiving the transmission data with the means 15 are separately provided, and each refrigerator receiver 28c, 38c, 48c controls the outdoor unit. The same circuit configuration for receiving the transmission data output from the means 15 and delivering it to the respective refrigerator control units 28a, 38a, 48a, and each refrigerator transmission unit 28c, 38c, 48c is a respective refrigerator control unit ( In the same circuit configuration, the inverter transmits buffered transmission data output from 28a, 38a, and 48a to the outdoor unit control means 15.

At this time, each refrigerator communication unit 16, 17, 18 is installed to transmit data even if the wiring is shorted between the outdoor unit control means 15 and the respective refrigerator control means 28, 38, 48, each refrigerator The communication units 16, 17, and 18 negate the outputs of the transmission data transmission units described later by the neighboring refrigerator communication units 16, 17, and 18 in order to detect the communication state of the neighboring refrigerator communication units 16, 17, and 18, respectively. Of each of the refrigerator control means 28, 38, and 48 corresponding to the outputs of the negative logical sum operators NOR1, NOR2, and NOR3, the negative logical sum operators NOR1, NOR2, and NOR3, and the state of the outdoor unit transmitter / receiver. When the wiring of one of the photo couplers PC1, PC4, PC7 and the refrigerator control means 28, 38, 48 controlling the current flow in the output stage is shorted, the other refrigerator control means 28, 38, 48 and the outdoor unit Respective communication holding units 16a, 17a, 18 for enabling data communication of the control means 15; a), photocouplers (PC3, PC6, PC9) for transmitting the state of the transmitting end of the corresponding refrigerator control means (28, 38, 48) to the receiving end of the outdoor unit control means (15) as transmission data, the refrigerator control And a photocoupler (PC2, PC5, PC8) which detects the current flow at the output of the means (28, 38, 48) and transmits it to the communication holding parts (28, 38, 48).

As described above, operation state data such as outdoor temperature, refrigerant pressure, internal temperature, high humidity, and the like are provided between the outdoor unit control unit 15, the kimchi refrigerator control unit 28, the wine refrigerator control unit 38, and the refrigerator control unit 48. And, it is configured to transmit all the control signals for controlling the operation of the various components, such signals are transmitted through the communication line 80 and the power line wired along one side of the refrigerant pipe 50, or to be transmitted through wireless communication. The outdoor unit 10 and the plurality of refrigerators 20, 30, and 40 may be separately provided with power lines, and may be separately supplied with power.

In the following, various aspects of the claimable invention are described. The following description forms part of a detailed description of the invention and is directed to examples of a method of operating a complex refrigeration system according to the present invention or a technical idea of the present invention which can be appreciated from various points of view. It should be understood as a minimum description and not as a boundary limiting the present invention.

The complex refrigeration system according to the present invention configured as described above has an advantage of easy installation, repair, inspection, cleaning, etc., because the refrigerant pipe of the flexible material is connected between the plurality of refrigerators and the outdoor unit by a screw type.

In addition, the present invention transmits a communication control signal between the plurality of refrigerators and the outdoor unit by wired / wireless, even if the wire is disconnected, the signal is transmitted, by installing a communication line or power line along with the refrigerant along the refrigerant pipe to reduce the installation length In addition, external damage can be prevented, which increases the operational reliability.

Claims (9)

A plurality of refrigerators including a plurality of evaporators; An outdoor unit comprising a compressor for forming a refrigeration cycle with the evaporators; A pipe connection portion including a plurality of flexible refrigerant pipes installed between the refrigerator and the outdoor unit and connected to supply the refrigerant to the selected refrigerator; And, And a communication control device configured to receive operation state data of the refrigerators or the outdoor unit, adjust the refrigerators and the outdoor unit according to the operation state data, and control a refrigerant supply operation of the pipe connection unit. The pipe connection unit comprises a; connecting means installed between the refrigerant pipes to communicate the refrigerant pipes with each other. The method of claim 1, The pipe connection unit is installed in the refrigerant pipes, a plurality of opening and closing valves for opening and closing the refrigerant pipes; complex refrigeration system comprising a. delete The method according to claim 1 or 2, The connecting means may include a male screw thread having a thread formed at an outer diameter of one end of the refrigerant pipe; And a female screw part rotatably installed at the other end of the refrigerant pipes and having a thread formed in the inner diameter thereof. The method of claim 1, The connecting means includes a male threaded portion formed with threads at outer diameters of both ends of the refrigerant pipes; A connector tube bent to connect between refrigerant tubes; And, And a female screw part rotatably installed at both ends of the connection pipe and having a thread formed at an inner diameter thereof. The method of claim 1, The communication control apparatus includes a wire for transferring driving state data or electric power between the refrigerators and the outdoor unit. The method of claim 6, The electric wire is a composite refrigeration system, characterized in that installed along the refrigerant pipe. A plurality of refrigerators including a plurality of evaporators; An outdoor unit comprising a compressor for forming a refrigeration cycle with the evaporators; A pipe connection portion including a plurality of flexible refrigerant pipes installed between the refrigerator and the outdoor unit and connected to supply the refrigerant to the selected refrigerator; And, And a communication control device configured to receive operation state data of the refrigerators or the outdoor unit, adjust the refrigerators and the outdoor unit according to the operation state data, and control a refrigerant supply operation of the pipe connection unit. The communication control apparatus includes: a plurality of refrigerator control means installed in a plurality of refrigerators, controlling operation of each refrigerator according to operation state data of each refrigerator or outdoor unit, and outputting operation state data of each refrigerator; And, An outdoor unit control unit installed in the outdoor unit and controlling the operation of the compressor of the outdoor unit and the refrigerant supply operation of the pipe connection unit according to the operation state data of each refrigerator or outdoor unit, and outputting the operation state data of the outdoor unit. Composite refrigeration system. The method of claim 8, The refrigerator control means includes a plurality of refrigerator transceivers that transmit operation state data of each refrigerator and receive operation state data of the other refrigerators and the outdoor unit. The outdoor unit control means includes a outdoor unit transceiver for transmitting the operation state data of the outdoor unit, and receives the operation state data of the refrigerator; complex refrigeration system comprising a.

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