KR20200090687A - An Electric Expanding Valve Type of a Controller for Refrigerating and Cooling - Google Patents

Abstract

The present invention relates to a freezing and cooling controller of an electronic expansion valve structure, which can adjust freezing or cooling conditions to be suitable for various situations by an operation controller for adjusting an operation and a main controller for setting a condition. The freezing and cooling controller of an electronic expansion valve structure of the present invention comprises: a parameter operation module (11) for adjusting an operational state of an electronic expansion valve (131); a parameter analysis module (12) for analyzing detection information detected from a multi-channel temperature sensor (141) and a section pressure sensor (142) detected from the electronic expansion valve (131) and a module connected to the same and having a refrigerant flowing therein; and a feedback module (15) for providing a feedback of the operational state in accordance with a parameter to an operating parameter in real time.

Description

An Electric Expanding Valve Type of a Controller for Refrigerating and Cooling

The present invention relates to a controller for refrigeration and refrigeration of an electronic expansion valve structure, and an electronic expansion valve capable of adjusting refrigeration or refrigeration conditions to suit a variety of situations by an operation controller that specifically controls operation and a main controller that sets conditions. It relates to a controller for refrigeration and refrigeration of the structure.

The flow rate of the refrigerant in the refrigeration or refrigeration system can be controlled mechanically or electronically, and the electronic valve determines the opening and closing of the expansion valve based on information detected at the evaporator outlet refrigerant. Such an electronic expansion valve can be designed with a proportional control structure, and has an advantage of having excellent response characteristics to a refrigerant flow rate, but has a disadvantage of limited application. For example, such an electronic control valve is difficult to apply to a refrigeration system of a refrigeration tower. A refrigerated or refrigerated tower vehicle may have a compressor or condenser operated by an independent cooling engine, or may have a cooler basically installed in the vehicle. The refrigeration system of a refrigeration tower vehicle has a disadvantage that it is difficult to use the advantages of an electronic control valve because it works in conjunction with the engine of the vehicle. However, when the refrigeration system of such a refrigeration tower vehicle is electrically operated by a driving means such as a motor, an electronic control valve may be applied.

WO 2002/14724 discloses an electric switching valve that can be applied to a refrigeration or cooling system according to the high performance of a refrigerator. In addition, Patent Publication No. 10-2005-0099799 discloses a control method of an electromagnetic expansion valve in a refrigeration cycle that determines a change value of the opening degree of an electromagnetic expansion valve in consideration of both the suction superheat of the compressor and the discharge temperature of the compressor.

Known electronic expansion control valves applied to refrigeration or refrigeration systems operate based on information detected from evaporators or compressors. However, it is advantageous that the flow of the refrigerant is determined according to the temperature distribution of the freezing space, and the operation of the electromagnetic expansion valve needs to be determined based on information detected in the freezing space. In addition, the operation of the electromagnetic expansion valve needs to be related to the operation of the compressor or condenser based on temperature or pressure information detected in real time. Therefore, the manufacture of the electromagnetic expansion valve needs to be precisely regulated in relation to the overall operating structure of the refrigeration or refrigeration system, and a control means capable of regulating it needs to be made. However, the prior art does not disclose such a control structure.

The present invention is intended to solve the problems of the prior art and has the following objects.

Prior art 1: WO 2002/14724 (Saginomiya Seisakusho, Ltd. released on February 21, 2002) Electric solenoid valve and refrigeration cycle device for freezer and refrigerator Prior Art 2: Patent Publication No. 10-2005-0099799 (LG Electronics Co., Ltd., published on October 17, 2005) Electronic expansion valve control method of refrigeration cycle device

The object of the present invention is an electronic expansion valve structure including an electronic expansion valve, an operation controller that controls the operation of a compressor and a condenser, and a main controller that sets operating conditions, so that the refrigeration or refrigeration can be precisely controlled according to a predetermined condition. And a refrigeration controller.

According to a preferred embodiment of the present invention, the controller for refrigeration and refrigeration of the electromagnetic expansion valve structure includes: a parameter operation module for adjusting an operating state of the electromagnetic expansion valve; A parameter analysis module that analyzes the detection information detected from the multi-channel temperature sensor and the section pressure sensor detected from the electronic expansion valve and a module through which the refrigerant flows; And a feedback module that feedbacks the operating state according to the parameter to the operating parameter in real time.

According to another suitable embodiment of the present invention, the operation control of the electromagnetic expansion valve comprises: a flow rate adjustment unit that adjusts the opening and closing level; A pressure regulating unit that regulates the internal pressure; And a temperature control unit flowing to the evaporator.

According to another suitable embodiment of the present invention, the parameter operation module is connected to the parameter analysis module in a slave structure to perform data communication in a can communication form, and coolant in real time based on the operation data transmitted from the parameter operation module. Regulates the flow of

The controller for the refrigeration and refrigeration of the electronic expansion valve structure according to the present invention allows the power consumption efficiency of 10% or more to be improved by being applied to a refrigeration or refrigeration vehicle. The controller according to the present invention can be applied to various refrigeration or refrigeration systems by being composed of a main controller connected through an operation controller and can communication, and can be easily applied to an already installed refrigeration or refrigeration system. With this structure, it can be linked to various types of temperature sensors or recorders, and it is possible to design a convenient interface structure connected to various screens. In addition, the application of a refrigeration or refrigeration algorithm for motor, valve driving, or output of sensor information is performed efficiently.

Figure 1 shows an embodiment of a controller for refrigeration and refrigeration of the electromagnetic expansion valve structure according to the present invention.
Figure 2 shows an embodiment of a refrigeration or refrigeration system to which the controller according to the present invention is applied.
3 shows an embodiment of a structure in which the electromagnetic expansion valve is controlled by the controller according to the present invention.
4 shows an embodiment of a structure in which a controller according to the present invention is operated.

Hereinafter, the present invention will be described in detail with reference to the embodiments presented in the accompanying drawings, but the embodiments are intended for a clear understanding of the present invention and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, and are not described repeatedly unless necessary for understanding of the invention, and well-known components are briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment.

Figure 1 shows an embodiment of a controller for refrigeration and refrigeration of the electromagnetic expansion valve structure according to the present invention.

Referring to FIG. 1, the controller for refrigeration and refrigeration of the electromagnetic expansion valve structure includes a parameter operation module 11 for adjusting the operation state of the electronic expansion valve 131; A parameter analysis module 12 that analyzes detection information detected from the multi-channel temperature sensor 141 and the section pressure sensor 142 detected from the electronic expansion valve 131 and a module through which the refrigerant flows; And a feedback module 15 that feedbacks the operating state according to the parameter to the operating parameter in real time.

The controller for refrigeration or refrigeration may be applied to a refrigeration vehicle or a similar refrigeration system, but is not limited thereto, and may be applied to various refrigeration or refrigeration systems. The efficiency of the cooling system can be determined based on heat exchange due to liquefaction and vaporization of the refrigerant in the refrigeration system and by appropriately controlling the flow and phase change of the refrigerant. The flow and phase change of the refrigerant can be induced by controlling the operation of the electromagnetic expansion valve 131, compressor 132, condenser, evaporator or similar module. And the operation of the cooling module 13 can be controlled by a parameter operation module. The parameter actuation module 11 can include various hardware or software that can control the level of operation of each device, component or element of the cooling module 13. And the parameter operation module 11 may form a controller together with the parameter analysis module 12. The flow and phase change of the refrigerant can be determined by temperature, pressure, flow velocity, flow direction, environmental conditions or similar parameters in different flow spaces. The parameter actuation module 11 can adjust the cooling module 13 based on these parameters. The parameters for operation may be variously set according to the structure of the parameter operation module 11, and may be set by the parameter analysis module 12. In addition, the parameter analysis module 12 may determine the level of change of the parameter value according to the operation of each component of the cooling module 13 and the parameter value according to the automatic level. And the parameter data is transmitted to the parameter operation module 11, and the parameter operation module 11 can operate each component of the cooling module 13 based on the parameter data. Detection means 14 such as a multi-channel temperature sensor 141 or a section pressure sensor 142 may be disposed at various locations in the refrigerant's flow space. Detection information detected by the detection means 14 may be transmitted to the parameter analysis module 12, and may also be transmitted to the feedback module 15. The parameter analysis module 12 may analyze the operation efficiency by analyzing the detection information transmitted to the detection means 14 and based on this, generate parameter data or modify the generated parameter data to perform parameter operation module (11). And the parameter operation module 11 controls the operation of the cooling module 13 based on this, and a state according to the operation can be transmitted to the feedback module 15. Along with this, the detection information by the detection means 14 of the operation state according to the parameter data may be transmitted to the feedback module 15. The feedback module 15 may match each operation level and parameter value of the cooling module 13 and transmit the parameter value to the parameter operation module 11, and the parameter operation module 11 may match parameter data. The operation of the cooling module 13 can be adjusted as much as possible. In order to control the operation of the cooling module 13 based on the parameter values, each configuration needs to be precisely adjusted, for example, the expansion valve can be an electronic expansion valve 131. A plurality of multi-channel temperature sensors 141 may be disposed at different locations in the refrigeration or refrigeration space, and the temperature distribution curve of the refrigeration or refrigeration space from the temperature changes at different locations detected by the multi-channel temperature sensor 141 may be Can be made. And based on the temperature distribution curve, the parameter operation module 11 can precisely control the operation of the electromagnetic expansion valve 131 to correspond to the parameter data. The electromagnetic expansion valve 131 may be driven by a solenoid method or a step motor method, but is not limited thereto.

2 shows an embodiment of a system for refrigeration or refrigeration to which a controller according to the present invention is applied.

Referring to FIG. 2, the controller may consist of a main controller 21 and a slave controller 22, and the main controller 21 and the slave controller 22 may communicate data by a communication method such as CAN communication. It can be connected to enable communication. The main controller 21 includes the parameter analysis module 12 described above, and the slave controller 22 can include the parameter operation module 11. The main controller 21 may be disposed in, for example, a driver's seat in which a driver of a refrigerator vehicle is located, or may be disposed in various locations convenient for operation separate from the freezing space. The main controller 21 may include a display unit, a print unit or a storage unit. In addition, the slave controller 22 may include an operation program, elements, and components for controlling the operation of the compressor 23, the condenser 24, the expansion valve unit 25, and the evaporator forming the cooling module. The refrigerant may be compressed in the compressor 23 and flow to the expansion valve unit 25 via the condenser 24. In addition, the cooling level of the refrigeration or cooling space may be determined by the amount of refrigerant evaporated by evaporation from the expansion valve 25 to the evaporator 26. In addition, a condenser fan driven by one driving motor 241 may be disposed in the condenser 24 and a two driving motor 261 for driving the evaporation fan may be disposed in the evaporator 26. A plurality of temperature sensors (TS1, TS2, TS3) are disposed inside the evaporator 26 or the evaporator space in which the evaporator 26 is installed, and a flow temperature sensor (TS4) or a pressure sensor (TP) in the flow path of the refrigerant. Can be placed. Temperature sensors TS1, TS2, TS3, TS4, or pressure sensors TP are arranged at various locations to detect the flow of refrigerant and provide feedback to the slave controller 22. The operation of the expansion valve unit 25 can be controlled by the slave controller 22. The slave controller 22 may directly connect to the refrigeration module and operate the cooling module based on parameter data and feedback values. Accordingly, it is possible to operate the cooling module based on the information detected in real time, and for example, the superheat or supercooling may be precisely controlled to be performed at a predetermined value. In addition, the operation of the expansion valve unit 25 is precisely controlled based on the real-time detection information so that the freezing space is frozen under predetermined conditions. For example, the operation of the expansion valve unit 25 is precisely controlled based on real-time detection information so that the refrigeration space is frozen according to predetermined conditions.

3 shows an embodiment of a structure in which the electromagnetic expansion valve is controlled by the controller according to the present invention.

Referring to Figure 3, the electromagnetic expansion valve 131 is formed inside the valve body 33 orifice 38 to induce the flow of the refrigerant; Adjustment means 31 for controlling the opening and closing level of the orifice 38 while being moved up and down by driving of a driving means 32 such as, for example, a step motor; And a buffer pad having an expansion/contraction path 381 that is disposed on the orifice 38 so that the path diameter expands or contracts according to the pressure of the flow refrigerant.

When the refrigerant in the liquid state flows into the orifice 38 through the inlet 34, the adjusting means 31 is moved into the orifice 38 by the operation of the driving means 32 according to the state of the freezing space. The level of opening and closing can be adjusted. The expansion and contraction path 381 may be expanded or contracted according to the amount of refrigerant discharged by opening/closing control, thereby allowing the refrigerant to be guided to the outlet 36 at a constant pressure. The outlet 36 may be made of a linear tube structure, and the discharge control means 37 whose length is adjusted according to the pressure of the refrigerant discharged at the end of the outlet 36 may be combined. For example, when the amount of the refrigerant is large and the pressure is high due to this, the flow distance of the refrigerant may be increased while moving in the discharge direction. Accordingly, the influence of temperature change on the inside of the orifice 38 according to vaporization of the refrigerant in the freezing space can be reduced. The discharge adjusting means 37 may have elastic means whose length changes according to pressure. Refrigerant flowing into the inside of the electromagnetic expansion valve 131, which is provided with detection means (S1, S2) for detecting temperature and pressure, respectively, at the inlet 34 through which the refrigerant flows in and the outlet 36 through which the refrigerant is discharged, The temperature and pressure of the discharged refrigerant may be detected and transmitted to the valve control unit 35.

The valve control unit 35 includes a flow rate adjustment unit 351 for operating the driving means M under the control of the parameter operation module 11; A pressure regulating unit 352 that maintains the internal pressure at a predetermined level; And a temperature control unit 353 that maintains the internal temperature of the orifice 38 at a predetermined level. In the process of the refrigerant being evaporated, the valve control unit 35 may operate each configuration so that a predetermined condition is maintained, and the state of the refrigerant flowing into the inside of the electric expansion valve 131 and the refrigerant discharged is detected. It can be detected by means S1 and S2 and transmitted to the parameter actuation module 11. The parameter operation module 11 can adjust the operation of the valve control unit 35 based on the feedback refrigerant state information. In this way, the operation state of the electromagnetic expansion valve 131 is detected in real time by the parameter operation module 11, and the operation is controlled so that the refrigeration or refrigeration system is efficiently operated.

4 shows an embodiment of a structure in which a controller according to the present invention is operated.

Referring to FIG. 4, while the operation of the operation module 41 is controlled by the slave controller 22, the operation state is detected by the detection module 42 and fed back to the slave controller 22. In addition, the detection information detected by the detection module 42 may be transmitted to the main controller 21 via the flow map unit 43. The operation module 41 includes a motor drive unit 411 for operation of the electromagnetic expansion valve; A clutch drive unit 412 for the operation of the compressor; And it may include a fan drive unit 413 for driving the fan of the condenser or evaporator. The operation of each drive unit of the slave controller 22 can be operated based on the operation data generated by the operation data unit 45, and the detection information detected and feedback from the detection module 42 is fed back to the operation data. By comparison, the operation of each drive unit can be adjusted. In addition, information detected by the detection module 42 may be transmitted to the main controller 21 via the flow map unit 43. The flow map unit 43 may form a flow map of the refrigerant from detection information detected at various locations. Temperature and pressure can be detected at different locations in the flow path of the refrigerant, and a flow map can be formed based on the temperature and pressure detected at different locations. The flow map may have a function of finding conditions that can reduce power consumption while efficiently refrigerating the freezing space during the flow of the refrigerant. In addition, while maintaining the superheat or supercooling at an appropriate level, the electronic expansion valve has a function of exploring the operating conditions of the cooling module according to the vaporization conditions of the refrigerant. As described above, the flow map unit 43 generates flow maps for temperature and pressure conditions in different flow paths of the refrigerant and may be transmitted to the main controller 21. The main controller 21 sends the flow map to the optimization data unit 44 so that the optimum operating parameters are searched and the optimized operating data is generated accordingly. And the optimized operation data is transmitted to the operation data unit 45 of the slave controller 22, based on which the operation of the operation module 41 can be adjusted. If the operation process is then fed back, optimization data is generated again, and the operation data can be corrected.

The controller for refrigeration and refrigeration of the electronic expansion valve structure according to the present invention can control the operation of the operation module 41 in various ways and is not limited to the presented embodiments.

The controller for the refrigeration and refrigeration of the electronic expansion valve structure according to the present invention allows the power consumption efficiency of 10% or more to be improved by being applied to a refrigeration or refrigeration vehicle. The controller according to the present invention can be applied to various refrigeration or refrigeration systems by being composed of a main controller connected through an operation controller and can communication, and can be easily applied to an already installed refrigeration or refrigeration system. With this structure, it can be linked to various types of temperature sensors or recorders, and it is possible to design a convenient interface structure connected to various screens. In addition, the application of a refrigeration or refrigeration algorithm for motor, valve driving, or output of sensor information is performed efficiently.

The present invention has been described in detail with reference to the presented embodiments, but those skilled in the art will be able to make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modified and modified inventions, but is limited by the appended claims.

11: Parameter operation module 12: Parameter analysis module
13: cooling module 14: detection means
15: feedback module 21: main controller
22: slave controller 23: compressor
24: condenser 25: expansion valve unit
26: evaporator 31: control means
32: drive means 33: valve body
34: inlet 35: valve control unit
36: outlet 37: exhaust control means
38: Orifice 41: Operating module
42: detection module 43: flow map unit
44: optimization data unit 45: operating data unit
131: electronic expansion valve 132: compressor
141: multi-channel temperature sensor 142: section pressure sensor
241, 261: 1, 2 drive motors 351: Flow control unit
352: pressure regulating unit 353: temperature regulating unit
381: stretch path 411: motor drive unit
412: clutch drive unit 413: fan drive unit
M: Driving means S1, S2: Detection means
TP: pressure sensor TS1, TS2, TS3: temperature sensor
TS4: flow temperature sensor

Claims (1)

A parameter operation module 11 for adjusting the operation state of the electromagnetic expansion valve 131;
A parameter analysis module 12 that analyzes detection information detected from the multi-channel temperature sensor 141 and the section pressure sensor 142 detected from the electronic expansion valve 131 and a module through which the refrigerant flows; And
And a feedback module 15 that feedbacks the operation state of the electromagnetic expansion valve 131 according to the parameters to the operation parameters in real time,
The multi-channel temperature sensor 141 is disposed at different locations in the refrigeration or refrigeration space to create a temperature distribution curve of the refrigeration or refrigeration space from temperature changes at different locations, and based on the temperature distribution curve, the electromagnetic expansion valve 131 ) To control the operation,
The operation control of the electromagnetic expansion valve 131 is operated inside the valve body 33 of the electromagnetic expansion valve 131 to operate the driving means 32 to adjust the opening and closing level of the orifice 38 that induces the flow of refrigerant. A flow rate adjusting unit 351; A pressure regulating unit 352 for regulating the internal pressure; And a temperature control unit 353 that maintains the internal temperature of the orifice 38 at a predetermined level,
The parameter operation module 11 is connected to the parameter analysis module 12 in a slave structure to perform data communication in the form of can communication, and the refrigerant flows in real time based on the operation data transmitted from the parameter operation module 11. Refrigeration and refrigeration controller of the electronic expansion valve structure, characterized in that to control.

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