Control device, refrigeration device, control method, and program

Abstract

To provide a control device, a refrigeration device having the control device, a control method, and a program, capable of performing rotation number control of a fan motor of the refrigeration device at a relatively low cost.SOLUTION: A control device according to the disclosure includes: a storage part for storing setting information regarding a rotation state of a fan motor set for each operation state of a refrigeration device having the fan motor, and a setting information table including a setting information set configured with the setting information regarding a rotation speed of the fan; and a signal generation part for generating a control signal for rotating the fan motor based on the setting information set.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a control device that controls the rotation of a fan of a refrigeration device, a refrigeration device having the control device, a control method, and a program. [Background technology]

[0002] A freezer or refrigerator showcase has multiple fan motors for various purposes, such as cooling the interior of the showcase or cooling the condenser in the cooling unit. The fan motors rotate the fans depending on the operating status of the showcase, such as cooling or defrosting.

[0003] For example, in the technology disclosed in Patent Document 1, a plurality of operation control modes for operating a fan motor are prepared, and the fan is operated in an appropriate operation control mode selected by a mode selection unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5766000 Summary of the Invention [Problem to be solved by the invention]

[0005] For the purpose of saving energy, doors may be retrofitted to existing showcases in stores, etc. In such cases, it is necessary to reduce the fan's airflow compared to before the doors were installed.

[0006] The technology disclosed in Patent Document 1 does not take into consideration changing the rotation speed of the fan motor. Furthermore, if the rotation speed of a fan motor cannot be changed, reducing the fan's airflow requires replacing it with a different fan with a different twist angle, which takes a lot of time and effort. For this reason, there is a demand for adopting a fan motor with a variable rotation speed when designing a showcase.

[0007] However, when fan motors with variable rotation speeds are used in a showcase, the rotation speeds of the multiple fan motors must be controlled in accordance with the operating conditions, which complicates the control.

[0008] The present disclosure aims to provide a control device that can easily control the rotation speed of a fan motor in a refrigeration device such as a showcase, a refrigeration device having the control device, a control method, and a program. [Means for solving the problem]

[0009] A control device according to one aspect of the present disclosure includes a memory unit that stores a setting information table including a setting information set configured for each operating state of a refrigeration device having a fan motor, the setting information set being configured to include setting information regarding the rotation state of the fan motor and setting information regarding the rotation speed of the fan motor, and a signal generation unit that generates a control signal to rotate the fan motor based on the setting information set.

[0010] A refrigeration device according to one aspect of the present disclosure includes a fan motor, a memory unit that stores a setting information table including a setting information set configured for each operating state, the setting information set being configured to include setting information regarding the rotation state of the fan motor and setting information regarding the rotation speed of the fan motor, and a signal generation unit that generates a control signal to rotate the fan motor based on the setting information set.

[0011] A control method according to one aspect of the present disclosure is a control method executed by a processor of a control device that controls the rotation of a fan motor of a refrigeration device, in which the processor reads a setting information table including a setting information set configured for each operating state of the refrigeration device, the setting information set being composed of setting information regarding the rotation state of the fan motor and setting information regarding the rotation speed of the fan motor, and controls the rotation of the fan motor based on the setting information regarding the rotation state and the rotation speed included in the setting information set corresponding to the current operating state.

[0012] A program according to one aspect of the present disclosure is a program executed by a processor of a control device that controls the rotation of a fan motor of a refrigeration device, and causes the processor to execute a process of reading a setting information table including a setting information set configured for each operating state of the refrigeration device, the setting information set being composed of setting information regarding the rotation state of the fan motor and setting information regarding the rotation speed of the fan motor, and controlling the rotation of the fan motor based on the setting information regarding the rotation state and the rotation speed included in the setting information set corresponding to the current operating state. [Effects of the Invention]

[0013] According to the present invention, the rotation speed of a fan motor in a refrigeration device such as a showcase can be easily controlled. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of a showcase; [Figure 2] A vertical cross-sectional view showing the overall structure of the showcase [Figure 3] A block diagram showing an example of the functional configuration of a control device that controls a fan motor. [Figure 4] A diagram for explaining a setting information table corresponding to one fan motor. [Figure 5] FIG. 10 is a diagram showing an example of the appearance of a reception unit. [Figure 6] FIG. 1 is a schematic diagram illustrating a plurality of control outputs provided by an output unit; [Figure 7] Flowchart for explaining an example of the operation of the control device [Figure 8] FIG. 1 is a diagram showing an example of a hardware configuration that realizes at least a part of the functional configuration of a control device by a program, and its peripheral configuration. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, each embodiment of the present disclosure will be described in detail with reference to the drawings. However, detailed descriptions of well-known matters and redundant descriptions of substantially identical configurations may be omitted. Furthermore, the following description and the referenced drawings are provided to enable those skilled in the art to understand the present disclosure and are not intended to limit the scope of the claims of the present disclosure.

[0016] [Overall configuration of refrigeration equipment] The configuration of a showcase 200 as an example of a refrigeration device of the present disclosure will be described. Fig. 1 is a perspective view showing the overall configuration of the showcase 200. Fig. 2 is a vertical cross-sectional view showing the overall configuration of the showcase 200.

[0017] The refrigeration device of the present disclosure is not limited to the showcase 200 exemplified in FIGS. 1 and 2, but may be, for example, a refrigerator or a freezer.

[0018] The showcase 200 includes a main case 201. A display room 203 for displaying products is provided in the upper part of the main case 201. A machine room 204 is provided below the display room 203. Note that the refrigeration device of the present disclosure is not limited to this, and for example, the machine room may be provided in the upper part of the refrigeration device. Furthermore, the components included in the machine room may be located away from the refrigeration device.

[0019] An opening 203a is provided in the front of the display room 203. Shelves 203c are installed in multiple levels vertically in the opening 203a, and a deck pan 203b is attached to the bottom. Inside the display room 203, products are displayed on the shelves 203c and deck pan 203b.

[0020] The showcase 200 includes a condenser 205a, a condenser fan motor 205b, an evaporator 205c, an evaporator fan motor 205d, a compressor 205e, and an electrical box 205f. The electrical box 205f houses a control unit and various electrical components that control the condenser 205a, the condenser fan motor 205b, the evaporator 205c, the evaporator fan motor 205d, the compressor 205e, and other components to cool the display chamber 203. Note that the refrigeration device of the present disclosure is not limited to this, and for example, components included in the cooling unit may be located away from the refrigeration device.

[0021] In this way, the showcase 200 has a plurality of fan motors. Note that the showcase of the present disclosure is not limited to the above-mentioned condenser fan motor 205b and evaporator fan motor, and may further have other fan motors.

[0022] At the bottom of the showcase 200, a drain pan 206 is provided for storing condensed water and defrosted water generated in the display chamber 203 and the evaporator 205c.

[0023] The condenser 205a, the condenser fan motor 205b, and the drain pan 206 are disposed in the machine room 204. The compressor 205e and the electrical box 205f are housed in a box-shaped case 20 and are disposed on the upper surface 201b of the main body case 201 in a unitized state.

[0024] The evaporator 205c is disposed inside a rear duct 201a formed in the main body case 201 behind the display chamber 203. The rear duct 201a forms part of an air passage that continues to a cool air outlet on the ceiling of the display chamber 203. The evaporator fan is disposed inside the air passage. Air that flows into the evaporator 205c when the evaporator fan is activated is cooled by the evaporator 205c and discharged from the cool air outlet into the display chamber 203. As the cool air circulates inside the display chamber 203, the products displayed in the display chamber are cooled.

[0025] The showcase 200 can be operated in various operating states. Examples of operating states include cooling operation and defrosting operation. Cooling operation is a normal operating state in which the interior of the display room 203 is cooled to a set temperature. Defrosting operation is an operating state in which, for example, cooling operation is stopped, and in some cases, a heater is attached to the evaporator, and electricity is applied to raise the temperature of the evaporator, melting and removing any frost that has accumulated. The refrigeration device of the present disclosure is not limited to these operating states and may be capable of transitioning to other operating states.

[0026] Furthermore, the showcase 200 may be configured to be able to set an energy saving mode in addition to the above operating states. When the energy saving mode is on, the showcase 200 operates in such a way that less power is consumed than when the energy saving mode is off, even in the same operating state.

[0027] [Control device 10] Next, the configuration of the control device 10 that controls the rotation of the fan motor 210 possessed by the showcase 200 will be described. In the following description, the fan motor 210 refers to at least one of the multiple fan motors possessed by the showcase 200. In this embodiment, the fan motor 210 is preferably a DC motor whose rotation speed can be controlled by a control signal, but it may also be an AC motor whose rotation speed cannot be controlled. The multiple fan motors 210 possessed by the showcase 200 may be a mixture of DC motors and AC motors.

[0028] In the embodiment described below, an example will be described in which the control device 10 controls the operation of the fan motor 210 of the showcase 200. However, the control device of the present disclosure may be configured to be able to control the operation of the showcase 200 as a refrigeration device in addition to controlling the operation of the fan motor 210.

[0029] 3 is a block diagram showing an example of the functional configuration of the control device 10 that controls the fan motor 210. The control device 10 includes a storage unit 11, a receiving unit 12, a signal generating unit 13, and an output unit 14.

[0030] 3, the storage unit 11, the reception unit 12, the signal generation unit 13, and the output unit 14 are illustrated as being included in a single device, but the present disclosure is not limited to this. For example, each functional configuration may be installed in a different location and connected to each other so as to be able to communicate with each other, thereby realizing the functions of the control device 10.

[0031] The control device 10 is a computer or includes a computer. At least a part of the functional configuration of the control device 10 is realized by a processor of the computer executing a program. A specific example of the configuration of a computer that can realize the functional configuration of the control device 10 will be described later.

[0032] The storage unit 11 stores various information necessary for the operation of the control device 10. In particular, the storage unit 11 stores a setting information table including a setting information set configured for each operating state of the showcase 200, the setting information being related to the rotation state of the fan motor 210 and the setting information related to the rotation speed of the fan motor 210.

[0033] FIG. 4 is a diagram illustrating a setting information table corresponding to one fan motor 210. In FIG. 4, "cooling" and "defrosting" indicate the operating states of the showcase 200. Note that the operating states shown in FIG. 4 are merely examples, and there may be operating states other than "cooling" and "defrosting." In FIG. 4, "time period 1," "time period 2," etc. indicate time periods to which the settings are applied. "Time period 1" corresponds, for example, to part of the morning (8:00 to 12:00), and "time period 2" corresponds, for example, to part of the afternoon (12:00 to 18:00). In the example shown in FIG. 4, only "time period 1" and "time period 2" are illustrated, but the number of time periods included in the setting information table may be more than three. For example, a "time period 3" corresponding to nighttime (18:00 to 24:00) may be included, and a "time period 4" corresponding to late night (24:00 to 4:00 the next morning) may also be included. The above-mentioned time periods are merely examples, and in reality, "time period 1" and "time period 2" may correspond to time periods different from those in the above example. 4, settings are made for each time period, but the present disclosure is not limited to this, and settings may be made for each more detailed operating state within one operating state, for example. As a specific example, settings may be made for each detailed operating state, such as "defrosting" or "draining water" within the operating state "defrosting."

[0034] "Energy saving mode" in Fig. 4 indicates a flag indicating whether the energy saving mode of the showcase 200 is on or off. In Fig. 4, "00" is a flag indicating that the energy saving mode is off, and "01" is a flag indicating that the energy saving mode is on.

[0035] The setting information table includes multiple setting information sets, each set for each operating state and time period, including setting information related to the rotation state of the fan motor 210 (hereinafter referred to as state information) and setting information related to the rotation speed of the fan motor 210 (hereinafter referred to as rotation speed information). In the example shown in Fig. 4, "ON" or "OFF" is the state information, and "Up", "Nor", "Dn", and "Off" are the rotation speed information.

[0036] The status information "ON" is a flag indicating that the fan motor 210 is rotated in the corresponding operating state and in the corresponding time period. The status information "OFF" is a flag indicating that the fan motor 210 is not rotated in the corresponding operating state and in the corresponding time period.

[0037] Furthermore, the rotation speed information "Nor" is a flag indicating that the fan motor 210 is to rotate at a predetermined reference speed. The rotation speed information "Up" is a flag indicating that the fan motor 210 is to rotate at a speed higher than the reference speed. The rotation speed information "Dn" is a flag indicating that the fan motor 210 is to rotate at a speed lower than the reference speed. The rotation speed information "Off" is a flag indicating the rotation speed when the fan motor 210 is not to rotate.

[0038] In this way, the setting information table includes multiple setting information sets, each consisting of status information and rotation speed information, set for each operating state and each time period. In Fig. 4, "ON (Up)", "ON (Nor)", "ON (Dn)", "OFF (Off)", etc. correspond to the setting information sets.

[0039] The setting information table also includes identifiers that identify combinations of setting information sets for multiple operating states and multiple time periods. In Fig. 4, "oEF0", "oEF1", etc. are identifiers. The combinations corresponding to the identifiers "oEF0" and "oEF1" each include a combination of setting information sets when the energy saving mode is on and a combination of setting information sets when the energy saving mode is off.

[0040] 4, each of the identifiers "oEF0" and "oEF1" is an identifier indicating a combination of a setting information set corresponding to time zone 1, time zone 2, etc. in the operating state "cooling" and time zone 1, time zone 2, etc. in the operating state "defrosting" when the energy saving mode is off, and a setting information set corresponding to time zone 1, time zone 2, etc. in the operating state "cooling" and time zone 1, time zone 2, etc. in the operating state "defrosting" when the energy saving mode is on. Note that the above-mentioned example is merely an example, and in the present disclosure, the combinations indicated by the identifiers are not limited to the above-mentioned example.

[0041] The identifier is used when the reception unit 12 receives the user's selection. In other words, by inputting the identifier via the reception unit 12, the user can simultaneously set the rotation state of the fan motor 210 in different operating states, different time periods, and different energy-saving modes.

[0042] The setting information table described above is set by a user or a manufacturer of the showcase 200 or the control device 10 for each fan motor 210 that the showcase 200 has, for example, when the showcase 200 is installed, and is stored in the storage unit 11. That is, the storage unit 11 stores a setting information table for each fan motor 210 that the showcase 200 has. As described above, the showcase 200 has multiple fan motors 210, and therefore the storage unit 11 stores a setting information table corresponding to each fan motor 210.

[0043] Furthermore, in case the environment of the showcase 200 changes, such as when a door is installed later on the showcase 200, the user may be allowed to add a new setting information table at any time.

[0044] Alternatively, if the multiple fan motors 210 possessed by the showcase 200 can be grouped according to their installation locations or uses, a setting information table corresponding to each group may be stored. In this embodiment, the showcase 200 has multiple groups (hereinafter referred to as fan motor groups) each consisting of fan motors with different installation locations or uses, and the storage unit 11 stores a setting information table for each of the multiple fan motor groups.

[0045] Returning to the explanation of Fig. 3, the reception unit 12 receives input operations from the user to the control device 10. Fig. 5 is a diagram showing an example of the appearance of the reception unit 12. As shown in Fig. 5, the reception unit 12 has a display unit 121 and an operation unit 122.

[0046] In this embodiment, the reception unit 12 also serves as an operation panel that receives operation commands for the showcase 200. In the example shown in FIG. 5, the display unit 121 is a four-digit seven-segment display that can display simple letters, symbols, or numbers. In the example shown in FIG. 5, the operation unit 122 includes four buttons: "lighting," "display switching," "settings," and "operation switching." The "lighting" button also serves as a button that receives operation in the downward direction, and the "display switching" button also serves as a button that receives operation in the upward direction. By operating these buttons, the user can control the operation of the entire showcase 200 (temperature setting, lighting setting, operation mode switching, etc.) and set the fan motor 210.

[0047] The reception unit 12 may be arranged on the surface of the showcase 200, on a wall surface of a control room or the like of a store in which the showcase 200 is installed, or on the surface of the control device 10 installed in the control room. Alternatively, the reception unit 12 may be, for example, a software operation device displayed on a display screen. In this case, the reception unit 12 is an image displayed on the display screen of a tablet terminal or PC (Personal Computer) owned by the user, and can accept operations when the user operates an operation unit 122 in the reception unit 12 with their hands or an operation device such as a mouse.

[0048] Returning to the explanation of Fig. 3, for the fan motor group selected by the user, the signal generating unit 13 generates a control signal for controlling the rotation of the fan motors 210 included in the fan motor group based on the identifier input by the user.

[0049] The output unit 14 outputs a control signal to the fan motor 210 of the showcase 200. The output unit 14 may output a control signal for each fan motor group configured by a plurality of fan motors of the showcase 200. In other words, the output unit 14 may output a control signal controlled for each fan group having different installation positions, uses, etc. in the showcase 200 to the fan motors 210 of each fan motor group.

[0050] FIG. 6 is a schematic diagram for explaining a plurality of control outputs that the output unit 14 has.

[0051] In the example shown in Fig. 6, the output unit 14 has three types of output systems that output control signals to one fan motor 210 or one fan group. In the example shown in Fig. 6, one output system is provided for each type, but in the present disclosure, multiple output systems may be provided for each type. In this specification, the output systems provided by the output unit 14 are referred to as control outputs.

[0052] In Figure 6, the control output shown as "AC relay output" controls the operating state of fan motor 210, i.e., on or off, by switching the output or non-output of the main power supply (AC voltage) by turning the relay on or off. The AC voltage output from "AC relay output" is input directly if fan motor 210 is an AC motor, and is converted to DC voltage by a DC power supply and then input if fan motor 210 is a DC motor. This controls the on / off of fan motor 210.

[0053] Similarly to the "AC relay output," the control output designated "DC voltage output" outputs a control signal that controls the on / off of the fan motor 210. The DC voltage output from the "DC voltage output" controls the on / off of a separately provided DC voltage drive relay. By switching the on / off of the DC voltage drive relay, the output or non-output of the AC voltage that is the power source for the fan motor 210 is switched, thereby controlling the operating state of the fan motor 210, i.e., on / off. The AC voltage output from the DC voltage drive relay is input directly if the fan motor 210 is an AC motor, or is converted into a DC output by a DC power supply and then input if the fan motor 210 is a DC motor.

[0054] On the other hand, the control output indicated as "speed control signal output" outputs a control signal for controlling the rotation speed of a DC motor, of which the rotation speed (rotational speed) is controllable, among the fan motors 210 of the showcase 200. The fan motor 210 receives a PWM signal output from the "speed control signal output" and is supplied with an operating voltage from a power supply for the fan motor 210 that is separately provided. This controls the rotation speed (rotational speed) of the fan motor 210 to a desired rotation speed. Note that although a PWM signal is output from the "speed control signal output" in FIG. 6, the present disclosure is not limited to this.

[0055] 6, the output unit 14 has a control output for controlling the operating state (i.e., on or off) of the fan motor 210 and a control output for controlling the number of rotations (rotation speed), which are independent of each other. Then, based on the setting information table, the signal generating unit 13 controls a motor whose rotation speed cannot be controlled using a control output that controls only on or off, and for a DC motor whose rotation speed can be controlled, it controls the operating state to on or off using a speed control signal output, and operates at a desired rotation speed based on the setting information table depending on the operating state of the showcase. Therefore, by setting the same identifier to different control outputs, it is possible to perform approximately the same motor control regardless of the type of motor (DC motor or AC motor).

[0056] 6 shows an example in which the output unit 14 has three control outputs for one fan motor 210 or one fan motor group, but the present disclosure is not limited to this. The control output that outputs a control signal for controlling the operating state may be, for example, either an "AC relay output" or a "DC voltage output."

[0057] [Control device operation] The operation of the control device 10 will be described below. Fig. 7 is a flowchart for explaining an example of the operation of the control device 10. In Fig. 7, below each step, an example of an operation accepted by the operation unit 122 for moving from that step to the next step is shown. Also, in Fig. 7, to the right of each step, an example of a display by the display unit 121 corresponding to that step is shown.

[0058] The initial state of the display unit 121 is to display the temperature inside the display room 203 of the showcase 200. In the example shown in Fig. 7, the display unit 121 displays "-25" °C.

[0059] In this state, by pressing and holding the "setting" button on the operation unit 122, the control device 10 transitions to a setting mode in step S1, in which various settings of the showcase 200 are made. Also, in step S1, the control device 10 accepts the selection of various settings via the operation unit 122. At this time, the display unit 121 displays the setting symbol that is first displayed when transitioning to the setting mode. FIG. 7 shows an example of the display of "rYO1", which indicates the setting of AC relay output 1.

[0060] The control output to be set is selected by operating the up and down buttons of the operation unit 122 (the "display switching" button and the "lighting" button).

[0061] In step S2, the reception unit 12 receives an operation to select the control output to be set. At this time, the display unit 121 displays a symbol indicating the selected control output. Fig. 7 shows an example of a display when "dCo2", which is a symbol indicating the setting of DC voltage output 2 among the control outputs, is selected.

[0062] The control output to be set is determined by operating the setting button of the operation unit 122.

[0063] In the processing up to step S2, a control output is selected, and thereby a fan motor group to be controlled to which a control signal is output is specified.

[0064] In step S3, the control device 10 transitions to a state in which it accepts the selection of an identifier set in the setting information table. At this time, the display unit 121 displays "oEF○" (numbers inside the circle) indicating the identifier of the current setting. Fig. 7 shows an example of the display when "oEF1" is set.

[0065] The identifier is selected by operating the up and down buttons of the operation unit 122 (the "display switching" button and the "lighting" button).

[0066] In step S4, the accepting unit 12 accepts an operation to determine an identifier. Fig. 7 shows an example of a display when "oEF2" is selected.

[0067] The identifier is determined by operating the setting button on the operation unit 122.

[0068] By the processing of steps S4 and S5, an identifier to be referenced when controlling the rotation of the control target fan motor group is specified from among the plurality of identifiers included in the setting information table.

[0069] In step S6, the signal generating unit 13 generates a control signal for the fan motor group to be controlled based on the selected identifier, and the output unit 14 outputs the generated control signal using the selected control output. As a result, the rotation of the fan motor group of the showcase 200 is controlled based on the setting information table.

[0070] After step S6, in step S7, the display unit 121 returns the display to the control output display of step S2.

[0071] In this embodiment, the selection and determination of the control output in steps S1-S3 and the selection and determination of the identifier in steps S4-S6 are performed by the user operating a simple operation unit 122 consisting of four buttons while looking at a display unit 121 that can display information on a four-digit seven-segment display as shown in Fig. 7. For this reason, even when the state of the showcase changes after installation, for example, when an additional door is installed later, and it becomes necessary to change the rotation speed or operating state of the fan motors, the user can control the rotation of multiple fan motor groups with a relatively small amount of operation while looking at a relatively small amount of information.

[0072] 7, the explanation of the energy saving mode of the showcase 200 is omitted. The energy saving mode selection is provided as a separate setting value, and the operating state can be changed in combination with this setting value. Alternatively, the signal generating unit 13 may acquire information from the showcase 200 as to whether or not it is operating in the energy saving mode, and in the control signal generating step of step S6, the signal generating unit 13 may refer to the setting information table and generate a control signal according to whether or not the energy saving mode is in operation.

[0073] <Actions and Effects> The control device 10 according to an embodiment of the present disclosure includes a memory unit 11 that stores a setting information table including a setting information set that is configured for each operating state of a showcase 200 (refrigeration device) having a fan motor 210, and that is composed of setting information regarding the rotation state of the fan motor 210 and setting information regarding the rotation speed of the fan motor 210, and a signal generation unit 13 that generates a control signal to rotate the fan motor 210 based on the setting information set.

[0074] With this configuration, when the showcase 200 has multiple fan motors 210, the user does not need to set the rotation state and rotation speed one by one for each fan motor 210. Therefore, the rotation control of the multiple fan motors 210 of the showcase 200 can be performed easily with little effort.

[0075] As a result, when the structure of an installed showcase 200 is changed, for example, by adding a door to the installed showcase 200, the rotation control of the fan motor 210 can be easily changed to match the changed structure.

[0076] In the control device 10 according to the embodiment of the present disclosure, the setting information table includes different setting information sets for each operating state and each time period.

[0077] This makes it possible to easily control the rotation of the fan motor 210 with little effort, depending not only on the operating state of the showcase 200 but also on the time of day.

[0078] In the control device 10 according to the embodiment of the present disclosure, the setting information table includes identifiers that identify combinations of setting information sets for a plurality of operating states and a plurality of time periods.

[0079] With this configuration, a combination of setting information sets for a plurality of operating states and a plurality of time periods can be identified by the identifier.

[0080] The control device 10 according to the embodiment of the present disclosure further includes a receiving unit 12 that receives a selection of an identifier, and a signal generating unit 13 generates a control signal based on a combination of setting information sets corresponding to the selected identifier.

[0081] This allows the user to control the rotation of the fan motor 210 corresponding to multiple operating states and multiple time periods by selecting an identifier once, which allows the user to control the rotation of the multiple fan motors 210 in the showcase 200 with less effort.

[0082] In the control device 10 according to the embodiment of the present disclosure, the setting information table includes setting information corresponding to each of a plurality of fan motors, or the setting information set includes setting information corresponding to each of a fan group made up of a plurality of fans.

[0083] With this configuration, for example, when the multiple fan motors 210 are configured as either DC motors or AC motors, one setting information table can be used to control the rotation of either the DC motor or the AC motor for the fan motor 210. As a result, even if an AC motor used in an installed showcase 200 is replaced with a DC motor with similar capacity, the rotation of the fan motor can be controlled without the need to update the setting information table.

[0084] Furthermore, when the showcase 200 has a plurality of fan motors 210 or a plurality of fan groups, the rotation of each of the fan motors 210 or fan motor groups can be reliably controlled.

[0085] The control device 10 according to the embodiment of the present disclosure further includes an output unit 14 that outputs a control signal to each fan motor 210 or each fan motor group. This makes it possible to output a control signal to each fan motor 210 or each fan motor group to be controlled with a simple structure.

[0086] [Example of control device hardware configuration] 8 is a diagram showing an example of a hardware configuration in which at least a part of the functional configuration of the control device 10 is realized by a program, and its peripheral configuration. The control device 10 has a microcomputer. The microcomputer includes a CPU (Central Processing Unit) as an arithmetic device, and a FROM (Flash Read Only Memory) and an SRAM (Static Random Access Memory) as main storage devices. The CPU can realize at least a part of the functional configuration of the control device 10 described above, for example, by loading a program stored in the FROM into the SRAM and executing it.

[0087] The microcomputer is connected to each of the control outputs mentioned above, allowing the CPU to control the output destination via each control output.

[0088] <Modification> The above-described embodiment is merely one application example of the present disclosure, and the present disclosure may include various other modifications without departing from the scope of the claims.

[0089] In the above-described embodiment, the showcase 200 as a refrigeration device and the control device 10 that controls the rotation of the fan motor 210 or the fan group are configured separately. However, the present disclosure is not limited to this, and for example, the control device that controls the rotation of the fan motor or the fan group may be incorporated into the refrigeration device. [Industrial Applicability]

[0090] The present invention is useful for a control device that controls the rotation of a fan in a refrigeration device. [Explanation of symbols]

[0091] 10 Control device 11 Storage section 12 Reception 121 Display section 122 Operation section 13 Signal generation unit 14 Output section 20 cases 200 Showcase 210 Fan Motor

Claims

1. a storage unit that stores a setting information table including setting information sets configured for each operating state of a refrigeration device having a fan motor, the setting information sets being configured with setting information related to the rotation state of the fan motor and setting information related to the rotation speed of the fan motor; a signal generating unit that generates a control signal for rotating the fan motor based on the setting information set; A control device comprising:

2. The setting information table includes different setting information sets for each operating state and each time zone. The control device according to claim 1 .

3. The setting information table includes an identifier that identifies a combination of the setting information sets for the plurality of driving states and the plurality of time periods. The control device according to claim 2 .

4. a reception unit that receives the selection of the identifier, the signal generation unit generates the control signal based on a combination of the setting information sets corresponding to the selected identifiers. The control device according to claim 3 .

5. the setting information table includes the setting information corresponding to each of the plurality of fan motors; The control device according to claim 1 .

6. the setting information set includes the setting information corresponding to each of the fan groups configured by the plurality of fan motors, The control device according to claim 1 .

7. an output unit that outputs the control signal for each of the fan motors or each of the fan groups; The control device according to claim 6.

8. A fan motor and a storage unit that stores a setting information table including setting information sets configured for each operating state, the setting information being configured to relate to the rotation state of the fan motor and the rotation speed of the fan motor; a signal generating unit that generates a control signal for rotating the fan motor based on the setting information set; A refrigeration device comprising:

9. A control method executed by a processor of a control device that controls the rotation of a fan motor of a refrigeration device, comprising: The processor: reading a setting information table including setting information sets each configured for each operating state of the refrigeration device, the setting information sets being configured with setting information relating to the rotation state of the fan motor and setting information relating to the rotation speed of the fan motor; controlling the rotation of the fan motor based on the setting information regarding the rotation state and the rotation speed included in the setting information set corresponding to the current operating state; Control method.

10. A program executed by a processor of a control device that controls the rotation of a fan motor of a refrigeration device, reading a setting information table including setting information sets each configured for each operating state of the refrigeration device, the setting information sets being configured with setting information relating to the rotation state of the fan motor and setting information relating to the rotation speed of the fan motor; controlling the rotation of the fan motor based on the setting information regarding the rotation state and the rotation speed included in the setting information set corresponding to the current operating state; A program that causes the processor to execute a process.

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