JP6966927B2 - Temperature / humidity control cabinet - Google Patents

Description

The present invention relates to a temperature / humidity control cabinet such as a dough conditioner that matures, ferments, etc. the bread dough in a state where the temperature and humidity are adjusted before baking the bread dough.

Patent Document 1 discloses an invention of a temperature / humidity control cabinet for bread making, which performs thawing, aging and fermentation of bread dough. This temperature / humidity control cabinet for bread making has a storage room that houses trays in multiple stages, a temperature control means that controls the temperature of the storage room, a humidity control means that controls the humidity of the storage room, and air in the storage room. It is equipped with a circulation means that circulates to make the temperature and humidity uniform. In this temperature / humidity control cabinet for bread making, the air in the storage room is circulated by the circulation means in a state where the temperature and humidity are controlled by the temperature control means and the humidity control means, and the bread dough stored in the storage room is thawed and thawed. Aging and fermentation processes are being carried out.

Japanese Unexamined Patent Publication No. 2000-300155

In the above-mentioned temperature / humidity control cabinet for bread making of Patent Document 1, an ultrasonic humidifier is adopted as a humidity control means, and the ultrasonic humidifier is communicated with an inlet and a humidifier formed in a storage chamber. ing. The air in the storage room is sent from the inlet to the ultrasonic humidifier for humidification, and the humidified air is sent to the storage room from the humidification port to humidify the storage room. In this temperature / humidity control cabinet for bread making, a guide is provided at least one of the inflow port and the humidification port, and the flow rate of the humidified air to the accommodation chamber is changed by the swing of the guide, so that the inside of the accommodation chamber is changed. I try to control the humidity. However, in this temperature / humidity control cabinet for bread making, the humidity in the storage room may be higher than the set humidity, and there is a risk that the bread dough in the storage room cannot be fermented at an appropriate humidity. An object of the present invention is to provide a temperature / humidity control cabinet that can control the humidity inside the storage cabinet so as to have an appropriate humidity.

In order to solve the above problems, the present invention has a storage for storing stored items, a circulation fan for circulating air in the storage, a cooling device for cooling the inside of the storage, and heating for heating the inside of the storage. Based on the device, the humidifier that humidifies the inside of the storage, the temperature sensor that detects the temperature inside the storage, the humidity sensor that detects the humidity inside the storage, and the detection temperature of the temperature sensor and the detection humidity of the humidity sensor. It is a temperature / humidity control cabinet equipped with a cooling device, a heating device, and a control device for controlling the operation of the humidifier. It is equipped with a condenser that liquefies the product, an expansion means that expands the liquefied refrigerant liquefied by the condenser, and an evaporator that cools the storage by the heat of vaporization when the expanded liquefied humidity vapor is vaporized. Allows the rotation speed of the fan motor of the cooling fan to cool the humidifier to be changed, and the control device controls the operation of the heating device to control the temperature inside the storage to reach the set temperature. When the detected humidity of the humidity sensor is higher than the set humidity and exceeds the set dehumidification humidity, the dehumidification operation is performed while the fan motor rotation speed is higher than the rotation speed when cooling the storage. It provides a temperature / humidity control cabinet characterized by the fact that the above is performed.

In the temperature / humidity control cabinet configured as described above, when the control device controls the operation of the heating device to control the temperature inside the storage cabinet so that it becomes the set temperature, the detected humidity of the humidity sensor is higher than the set humidity. When the humidity exceeds the set dehumidification humidity, the dehumidification operation is executed in which the compressor is operated in a state where the rotation speed of the fan motor is rotated at a rotation speed higher than the rotation speed at which the storage is cooled. When the compressor is operated while the rotation speed of the fan motor is higher than the rotation speed when cooling the refrigerator, a large amount of refrigerant stays in the condenser and the high pressure side and low pressure side of the compressor are operated. The pressure difference between the two is reduced, and the amount of refrigerant circulated and supplied to the evaporator is reduced, so that dehumidification can be performed while cooling is suppressed.

In the temperature / humidity control cabinet configured as described above, when the lower limit humidity set lower than the set humidity is detected by the humidity sensor within a predetermined time after the dehumidification operation is started, the dehumidification operation is continued. It is preferable to control the humidification with a humidifier. In such a case, it was possible to prevent the inside of the storage from being excessively dehumidified by humidifying the inside of the storage with a humidifier while preventing the compressor from being stopped early in the dehumidification operation.

In the temperature / humidity control cabinet configured as described above, the heating device is operated when the humidity sensor detects the dehumidification humidity or higher and the detection temperature of the temperature sensor detects the minimum set lower limit temperature set lower than the set temperature. It is preferable to stop the execution of the dehumidifying operation in this state. In this case, the temperature control in the storage was prioritized over the dehumidification in the storage, and the temperature in the storage could be suppressed from becoming low.

It is a front view of the temperature and humidity control cabinet of this invention. It is a vertical sectional view along the left-right direction of the front part of FIG. It is a cross-sectional view of AA. It is a schematic diagram of the cooling device, the heating device and the humidifier of the greenhouse degree control cabinet. BB sectional view. It is a block diagram which shows the control device.

Hereinafter, an embodiment of the temperature / humidity control cabinet of the present invention will be described with reference to the accompanying drawings. The temperature / humidity control cabinet 10 of the present invention is called a dough conditioner, and each step of freezing (freezing), retarding (refrigerating), preheating and proofing (fermentation) is executed in order before baking the bread dough. be. In the temperature / humidity control cabinet 10, the temperature is controlled according to each step when each of the above steps is executed, and the humidity is controlled in addition to the temperature control in the preheating and proofing steps.

As shown in FIGS. 1 and 2, the temperature / humidity control cabinet 10 has a storage cabinet 12 for storing bread dough (stored items) in a portion of the housing 11 excluding the right side portion, and a machine room in the right portion of the housing 11. It is equipped with 13. As shown in FIG. 3, the front portion of the storage 12 is provided with a front opening 12a for loading and unloading a tray on which bread dough is placed, and the front opening 12a has a door 14 for opening and closing the door 14 that can be opened and closed freely. It is provided.

As shown in FIGS. 2 and 4, a partition plate 15 is provided on the right side portion and the bottom portion of the storage cabinet 12, and the right side portion and the bottom portion partitioned by the partition plate 15 of the storage cabinet 12 control the temperature and humidity. The duct passage 16 is used to send the adjusted air to the storage 12. The duct passage 16 includes a vertical duct passage 16a arranged on the right side of the storage 12 and a horizontal duct passage 16b arranged on the bottom of the storage 12. Further, the upper portion of the vertical duct passage 16a protrudes toward the machine room 13, and this portion accommodates the evaporator 25 of the cooling device 20 and the heater 31 of the heating device 30, which will be described later, to cool the air. It is a temperature control space 16c for heating.

As shown in FIGS. 2 and 4, a circulation fan 17 is attached to the upper part of the partition plate 15 arranged on the right side of the storage 12 and as shown by the arrow of the two-dot chain line in FIG. The air in the storage 12 is guided to the duct passage 16 by the circulation fan 17. The air guided to the duct passage 16 is cooled or heated in the temperature control space 16c to adjust the temperature, and is sent to the left side portion of the storage 12 through the vertical duct passage 16a and the horizontal duct passage 16b. There is.

As shown in FIGS. 4 and 5, a temperature sensor 18 and a humidity sensor 19 are arranged in the temperature control space 16c, and the temperature sensor 18 detects the temperature in the storage 12 and is a humidity sensor. Reference numeral 19 is for detecting the humidity in the storage 12.

As shown in FIGS. 2, 4 and 5, the evaporator 25 of the cooling device 20 for cooling the inside of the storage 12 is arranged in the temperature control space 16c. The cooling device 20 cools the air in the storage 12 passing through the temperature control space 16c to cool the inside of the storage 12. The cooling device 20 uses a well-known refrigerant circuit, and includes a compressor 21 for compressing the refrigerant, a condenser 22 for cooling the compressed refrigerant gas, a dryer 23 for removing water contained in the liquefied refrigerant, and liquefaction. A capillary tube (expansion means) 24 for expanding the refrigerant and an evaporator 25 for vaporizing the expanded liquefied refrigerant to cool the inside of the storage 12 are provided. The evaporator 25 is arranged in the temperature control space 16c of the duct passage 16, and the other parts are arranged in the machine room 13. In this cooling device 20, the refrigerant gas compressed by the compressor 21 is cooled by the condenser 22 to become a liquefied refrigerant, and the liquefied refrigerant is expanded by the capillary tube 24 through the dryer 23 and sent to the evaporator 25. , The air in the temperature control space 16c is cooled when vaporized by the evaporator 25. Further, the compressor 21 employs an inverter type motor and can control the rotation speed. Further, the condenser 22 is provided with a cooling fan 22a for cooling the refrigerant, and the cooling fan 22a employs an inverter type motor so that the rotation speed can be controlled. Although a capillary tube is used as the expansion means, the method is not limited to this, and an expansion valve such as an electronic expansion valve may be used.

As shown in FIGS. 2, 4 and 5, a heating device 30 for heating the inside of the storage 12 is provided in the temperature control space 16c. The heating device 30 heats the air in the storage 12 passing through the temperature control space 16c to heat the inside of the storage 12. The heating device 30 includes a heater 31 for heating the air in the temperature control space 16c, and a bracket 32 for attaching the heater 31 to the temperature control space 16c. The heater 31 is attached to the lower side of the evaporator 25 of the cooling device 20 by the bracket 32. The heater 31 uses a glass tube heater, and not only can efficiently heat the air in the temperature control space 16c by radiant heat, but also has a function as a defrost heater of the evaporator 25 arranged on the upper side. ..

As shown in FIGS. 2, 4 and 5, a humidifier 40 is arranged in the vertical duct passage 16a of the duct passage 16, and the humidifier 40 humidifies the inside of the storage 12. The humidifier 40 includes a spray nozzle 41 that sprays water in the form of a mist, a water supply pipe 42 that supplies water to the spray nozzle 41 from a water supply source such as water supply, and an air supply pipe 43 that supplies air to the spray nozzle 41. It is provided with an air compressor 44 that sends air to a spray nozzle in a pressurized state via a trachea 43. The water supply pipe 42 is connected to a water supply source such as water supply, and the water supply pipe 42 is interposed with a pressure reducing valve 42a and a water supply valve 42b. Further, a drainage pipe 45 is connected to the water supply pipe 42 downstream of the water supply valve 42b, and a drainage valve 45a is interposed in the drainage pipe 45.

The spray nozzle 41 is arranged at the rear portion of the vertical duct passage 16a at the same height as the lower portion of the temperature control space 16c. The spraying direction from the tip of the spray nozzle 41 is directed from the rear portion of the vertical duct passage 16a to the front, and is in a direction intersecting (orthogonal) with the air descending the vertical duct passage 16a by the circulation fan 17. When the water supply valve 42b is opened and the air compressor 44 is operated, water from the water supply pipe 42 and air from the air supply pipe 43 flow into the spray nozzle 41, and the water is sprayed from the spray nozzle 41 in the form of a mist. Further, when the water is not sprayed from the spray nozzle 41 in the form of a mist, the water remaining in the water supply pipe 42 is discharged from the drain pipe 45 by opening the drain valve 45a so that the water does not remain in the water supply pipe 42. It is designed to do.

As shown in FIG. 6, the temperature / humidity control cabinet 10 includes a control device 50, and the control device 50 includes a circulation fan 17, a temperature sensor 18, a humidity sensor 19, and a cooling device 20 (compressor 21, condenser 22). It is connected to the fan motor 22b), the heating device 30 (heater 31), and the humidifier 40 (water supply valve 42b, air compressor 44, and drain valve 45a). The control device 50 has a microcomputer (not shown), and the microcomputer includes a CPU, a RAM, a ROM, and a timer (all of which are not shown) connected via a bus. The control device 50 includes a fermentation program in which the bread dough in the storage 12 is sequentially executed in the ROM by each step of freezing (freezing), retarding (refrigerating), preheating, and proofing (fermentation). The temperature / humidity control cabinet 10 can selectively execute at least one of each step of freeze (freezing), retard (refrigerating), preheating and proofing (fermentation).

The fermentation program keeps the inside of the storage 12 at -5 ° C for 3 hours in the freeze process, keeps the inside of the storage 12 at 0 ° C to 2 ° C in the retard (refrigerate) process, and keeps the inside of the storage 12 at 0 ° C to 2 ° C in the preheating process. The inside is controlled to maintain a humidity of 75 to 80% at 15 ° C. to 18 ° C. for 2 hours, and to maintain a humidity of 75 to 85% at 28 ° C. to 35 ° C. for 1 hour in the proof (fermentation) step. In this fermentation program, the time required for the freeze (freezing) step, the preheating step and the proofing (fermentation) step is reduced from the time required from the start time of the freeze (freezing) step to the preset end time of the proof (fermentation) step. The remaining time is controlled to execute the retard (refrigerating) process. The temperature, humidity and time are just examples and can be changed depending on the type of bread dough used for fermentation.

The control when the fermentation program is executed will be described below. In the freeze (freezing) step, the control device 50 controls the operation of the cooling device 20 based on the detection temperature of the temperature sensor 18 to control the temperature inside the storage 12 so as to be −5 ° C. Cooling when the detection temperature of the temperature sensor 18 detects a set upper limit temperature higher than the set temperature of the storage 12 of -5 ° C (the set upper limit temperature is set, for example, 1 ° C higher than the set temperature, and the same applies hereinafter). The device 20 is operated, and the detection temperature of the temperature sensor 18 is set to be lower than the set temperature of the storage 12 of −5 ° C. ) Is detected, the operation of the cooling device 20 is stopped. When the cooling device 20 is operating, the air sent from the inside of the storage 12 to the temperature control space 16c of the duct passage 16 by the circulation fan 17 is cooled by exchanging heat with the evaporator 25. As shown by the arrow of the two-dot chain line in FIG. 4, the cooled air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is cooled by the cooled air. Will be done.

After 3 hours have passed from the start of the freeze (freezing) process, the control device 50 executes the retard (refrigerating) process. In the retard (refrigerating) step, the control device 50 controls the operation of the cooling device 20 based on the detection temperature of the temperature sensor 18 to control the temperature inside the storage 12 so as to be 2 ° C. When the detection temperature of the temperature sensor 18 detects a set upper limit temperature higher than the set temperature of the storage 12 of 2 ° C, the cooling device 20 is operated, and the detection temperature of the temperature sensor 18 is 2 ° C which is the set temperature of the storage 12. When a lower set lower limit temperature is detected, the operation of the cooling device 20 is stopped. When the cooling device 20 is operating, the air sent from the inside of the storage 12 to the temperature control space 16c of the duct passage 16 by the circulation fan 17 is cooled by exchanging heat with the evaporator 25. As shown by the arrow of the two-dot chain line in FIG. 4, the cooled air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is cooled by the cooled air. Will be done.

When a predetermined time has elapsed from the start of the retard (refrigerating) process, the control device 50 executes the preheating process. In the preheating step, the control device 50 controls the operation of the cooling device 20 or the heater 31 based on the detected temperature of the temperature sensor 18, so that the temperature inside the storage 12 is controlled to 18 ° C. and the humidity is controlled. By controlling the operation of the humidifier 40 based on the detected humidity of the sensor 19, the humidity inside the storage 12 is controlled to be 85%. In an environment where the room temperature is higher than the set temperature of 18 ° C, the cooling device 20 is operated when the detection temperature of the temperature sensor 18 detects a set upper limit temperature higher than the set temperature of the storage 12 of 18 ° C. It is controlled so that the operation of the cooling device 20 is stopped when the detection temperature of the temperature sensor 18 detects a set lower limit temperature lower than the set temperature of the storage 12 of 18 ° C. When the cooling device 20 is operating, the air sent from the inside of the storage 12 to the temperature control space 16c of the duct passage 16 by the circulation fan 17 is cooled by exchanging heat with the evaporator 25. As shown by the arrow of the two-dot chain line in FIG. 4, the cooled air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is cooled by the cooled air. Will be done.

On the other hand, in an environment where the room temperature is lower than the set temperature of 18 ° C, the heater 31 is operated when the detection temperature of the temperature sensor 18 detects a set lower limit temperature lower than the set temperature of the storage 12 of 18 ° C. When the detection temperature of the temperature sensor 18 detects a set upper limit temperature higher than the set temperature of the storage 12 of 18 ° C., the operation of the heater 31 is controlled to be stopped. When the heater 31 is operated, the air sent from the inside of the storage 12 to the temperature control space 16c of the duct passage 16 by the circulation fan 17 is heated by the heater 31. As shown by the arrow of the two-dot chain line in FIG. 4, the heated air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is warmed by the heated air. Be done.

Further, in the preheating step, the control device 50 not only controls the temperature described above but also controls the humidity in the storage 12 so as to be 75%. When the control device 50 detects a set lower limit humidity whose detection humidity by the humidity sensor 19 is lower than 75% (the set lower limit humidity is set, for example, 5% lower than the set humidity, and the same applies hereinafter), the humidifier 40 humidifies the humidity. When the humidity sensor 19 detects a set upper limit humidity higher than 75% (the set upper limit humidity is set, for example, 5% higher than the set humidity, and the same applies hereinafter), humidification by the humidifier 40 is performed. It is controlled to stop. When water is sprayed from the spray nozzle 41 in the form of a mist, the air sent from the storage 12 to the duct passage 16 by the circulation fan 17 is the water sprayed from the spray nozzle 41 in the vertical duct passage 16a. It is vaporized and humidified, and as shown by the arrow of the two-point chain line in FIG. 4, the humidified air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is inside. It is humidified by the humidified air.

Further, in the preheating step, the operation of the heating device 30 is controlled based on the detected temperature of the temperature sensor 18, the temperature is controlled so that the temperature inside the storage 12 becomes 18 ° C. as a predetermined set temperature, and the humidity sensor 19 is used. When the operation of the humidifier 40 is controlled based on the detected humidity of and the humidity is controlled so that the inside of the storage 12 becomes 75% as a predetermined set humidity, the detected humidity of the humidity sensor 19 is the set humidity. When the humidity exceeds the dehumidification humidity set higher than 75% (the dehumidification humidity is set, for example, 10% higher than the set humidity, and the same applies hereinafter), the control device 50 controls the fan of the cooling fan 22a of the condenser 22. The dehumidifying operation for operating the compressor 21 is executed in a state where the rotation speed of the motor 22b is rotated at a rotation speed higher than the rotation speed at which the storage 12 is cooled. The dehumidifying humidity is set higher than the above setting upper limit humidity. When the compressor 21 is operated in a state where the rotation speed of the fan motor 22b of the cooling fan 22a of the condenser 22 is rotated at a rotation speed higher than the rotation speed at which the storage 12 is cooled, a large amount of refrigerant is generated in the condenser 22. The pressure difference between the high pressure side and the low pressure side of the compressor 21 is reduced, and the amount of the refrigerant circulated and supplied to the evaporator 25 is reduced, so that dehumidification can be performed while cooling is suppressed. When the amount of refrigerant circulated and supplied to the evaporator 25 is suppressed and vaporized, the temperature of the air sent from the storage 12 to the temperature control space 16c by the circulation fan 17 is suppressed by the evaporator 25. Dehumidified with. The air dehumidified by the evaporator 25 is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the dehumidified air circulates in the storage 12.

Further, although the humidity in the storage 12 is lowered by executing the dehumidifying operation, the humidity in the storage 12 is 75%, which is the set humidity, within 3 minutes as a predetermined time from the start of the dehumidifying operation. May also be low. When the set lower limit humidity set lower than the set humidity is detected by the humidity sensor 19, the control device 50 controls the humidifier 40 to humidify while the dehumidification is continued by the dehumidification operation. By doing so, while preventing the compressor 21 from being stopped early in the dehumidifying operation, the inside of the storage 12 is humidified by the humidifier 40 so that the inside of the storage 12 is not excessively dehumidified. be able to.

Further, the humidity sensor 19 detects the dehumidification humidity or higher, and the detection temperature of the temperature sensor 18 is set to be lower than the set temperature of 18 ° C. The same applies hereinafter), the dehumidifying operation is stopped while the heater 31 of the heating device 30 is operated. By doing so, it is possible to give priority to temperature control over dehumidification in the storage 12 and suppress the temperature in the storage 12 from becoming low. The minimum set lower limit temperature is set lower than the set lower limit temperature.

Two hours after the start of the preheating step, the control device 50 executes the fermentation (hoiro) step. In the proofing (fermentation) step, the control device 50 controls the operation of the heater 31 based on the detection temperature of the temperature sensor 18, so that the temperature inside the storage 12 is controlled to 35 ° C., and the humidity sensor By controlling the operation of the humidifier 40 based on the detected humidity of 19, the humidity inside the storage 12 is controlled to be 85%.

When the detection temperature of the temperature sensor 18 detects a set lower limit temperature lower than the set temperature of the storage 12 of 35 ° C, the heater 31 is controlled to operate, and the detection temperature of the temperature sensor 18 is the set temperature of the storage 12. When a set upper limit temperature higher than a certain 35 ° C. is detected, the operation of the heater 31 is controlled to be stopped. When the heater 31 is operated, the air sent from the inside of the storage 12 to the temperature control space 16c of the duct passage 16 by the circulation fan 17 is heated by the heater 31. As shown by the arrow of the two-dot chain line in FIG. 4, the heated air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is warmed by the heated air. Be done.

Further, the control device 50 not only controls the temperature but also controls the humidity in the storage 12 so as to be 85%. When the control device 50 detects a set lower limit humidity whose detection humidity by the humidity sensor 19 is lower than 85%, the humidifier 40 controls to humidify the humidity, and when the control device 50 detects a set upper limit humidity whose detection humidity by the humidity sensor 19 is higher than 85%. It is controlled to stop the humidification by the humidifier 40. When water is sprayed from the spray nozzle 41 in the form of a mist, the air sent from the storage 12 to the duct passage 16 by the circulation fan 17 is the water sprayed from the spray nozzle 41 in the vertical duct passage 16a. It is vaporized and humidified, and as shown by the arrow of the two-point chain line in FIG. 4, the humidified air is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the inside of the storage 12 is inside. It is humidified by the humidified air.

Further, in the humidification step, the operation of the heating device 30 is controlled based on the detection temperature of the temperature sensor 18, and the temperature inside the storage 12 is controlled to be 35 ° C. as a predetermined set temperature. When the operation of the humidifier 40 is controlled based on the detected humidity of the humidity sensor 19 and the humidity is controlled so that the humidity inside the storage 12 becomes 85% as a predetermined set humidity, the detected humidity of the humidity sensor 19 is controlled. When the humidity becomes higher than the set humidity of 85% and is equal to or higher than the set dehumidification humidity, the control device 50 rotates the rotation speed of the fan motor 22b of the cooling fan 22a of the condenser 22 higher than the rotation speed when cooling the storage 12. A dehumidifying operation is performed in which the compressor 21 is operated in a state of being rotated by a number. The dehumidifying humidity is set higher than the above setting upper limit humidity. When the compressor 21 is operated in a state where the rotation speed of the fan motor 22b of the cooling fan 22a of the condenser 22 is rotated at a rotation speed higher than the rotation speed at which the storage 12 is cooled, a large amount of refrigerant is generated in the condenser 22. The pressure difference between the high pressure side and the low pressure side of the compressor 21 is reduced, and the amount of the refrigerant circulated and supplied to the evaporator 25 is reduced, so that dehumidification can be performed while cooling is suppressed. The air dehumidified by the evaporator 25 is sent to the storage 12 again through the vertical duct passage 16a and the horizontal duct passage 16b, and the dehumidified air circulates in the storage 12.

Further, although the humidity in the storage 12 is lowered by executing the dehumidifying operation, the humidity in the storage 12 is 85%, which is the set humidity, within 3 minutes as a predetermined time from the start of the dehumidifying operation. May also be low. When the set lower limit humidity set lower than the set humidity is detected by the humidity sensor 19, the control device 50 controls the humidifier 40 to humidify while the dehumidification is continued by the dehumidification operation. By doing so, while preventing the compressor 21 from being stopped early in the dehumidifying operation, the inside of the storage 12 is humidified by the humidifier 40 so that the inside of the storage 12 is not excessively dehumidified. be able to.

Further, when the humidity sensor 19 detects the dehumidified humidity or higher and the detected temperature of the temperature sensor 18 detects the minimum set lower limit temperature set lower than the set temperature of 35 ° C., the heater 31 of the heating device 30 is operated. The execution of the dehumidifying operation is stopped in the state. By doing so, it is possible to give priority to temperature control over dehumidification in the storage 12 and suppress the temperature in the storage 12 from becoming low. One hour after starting the proofing (fermentation) process, the control device 50 ends the fermentation program.

In the temperature / humidity control cabinet 10 configured as described above, the operation of the heater 31 is controlled when the preheating step and the proof (condensation) step are executed, and the temperature inside the storage cabinet 12 is controlled so as to reach the set temperature. When the detected humidity of the humidity sensor 19 becomes higher than the set humidity and exceeds the set dehumidifying humidity, the rotation speed of the fan motor 22b of the cooling fan 22a of the condenser 22 is higher than the rotation speed when cooling the storage 12. A dehumidifying operation is performed in which the compressor 21 is operated in a state of being rotated by a number. When the compressor 21 is operated in a state where the rotation speed of the fan motor 22b of the cooling fan 22a of the condenser 22 is rotated at a rotation speed higher than the rotation speed when cooling the storage 12, the compressor 22 has many rotations. The refrigerant stays and the pressure difference between the high pressure side and the low pressure side of the compressor 21 decreases, and the amount of the refrigerant circulated and supplied to the evaporator 25 decreases, so that dehumidification can be performed while cooling is suppressed.

Further, when the humidity sensor 19 detects a set lower limit humidity lower than the set humidity within 3 minutes from the start of the dehumidification operation, the humidifier 40 is used to humidify the dehumidification while the dehumidification operation is continued. It is controlled to. By doing so, while preventing the compressor 21 from being stopped early in the dehumidifying operation, the inside of the storage 12 is humidified by the humidifier 40 so that the inside of the storage 12 is not excessively dehumidified. I was able to.

Further, when the humidity sensor 19 detects the dehumidification humidity or higher and the detection temperature of the temperature sensor 18 detects the minimum set lower limit temperature set lower than the set temperature, the dehumidification is performed with the heater 31 of the heating device 30 activated. The execution of the operation is stopped. By doing so, it was possible to give priority to temperature control over dehumidification in the storage 12 and suppress the temperature in the storage 12 from becoming low.

In this embodiment, the circulation fan 17 is continuously operated when the temperature control (and humidity control) is executed in each process in the storage 12, but the humidity is controlled in the storage 12. Occasionally, the circulation fan 17 may be operated intermittently so that the compressor 21 does not turn on and off as much as possible even for a short time during the dehumidifying operation. Similarly, by making the rotation speed of the circulation fan 17 changeable and controlling the rotation speed of the circulation fan 17, it is possible to prevent the compressor 21 from turning on and off as much as possible even for a short time during the dehumidifying operation. Furthermore, when the process changes (from the retard (refrigerating) process to the preheating process, from the preheating process to the proofing (fermentation) process), or when the door 14 is opened, the heating inside the storage 12 is prioritized and dehumidification is not performed. It may be controlled to.

10 ... Temperature / humidity control cabinet, 12 ... Cooking cabinet, 17 ... Circulation fan, 18 ... Temperature sensor, 18A ... Dehumidifying temperature sensor, 19 ... Humidity sensor, 20 ... Cooling device, 21 ... Compressor, 22 ... Condenser, 22a ... Cooling fan, 22b ... Fan motor, 24 ... Expansion means (capillary tube), 25 ... Evaporator, 30 ... Heating device, 40 ... Humidifier, 50 ... Control device.

Claims (3)

A storage for storing things and a storage
A circulation fan that circulates the air in the storage,
A cooling device that cools the inside of the storage, and
A heating device that heats the inside of the storage, and
A humidifier that humidifies the inside of the storage, and
A temperature sensor that detects the temperature inside the storage, and
A humidity sensor that detects the humidity inside the storage, and
A temperature / humidity control cabinet provided with a control device for controlling the operation of the cooling device, the heating device, and the humidifier based on the detected temperature of the temperature sensor and the detected humidity of the humidity sensor.
The cooling device includes a compressor that pumps the refrigerant, a condenser that cools and liquefies the refrigerant pumped by the compressor, an expansion means that expands the liquefied refrigerant liquefied by the condenser, and the expansion means. It is equipped with an evaporator that cools the storage by the heat of vaporization when the liquefied refrigerant is vaporized, and the condenser makes it possible to change the rotation speed of the fan motor of the cooling fan that cools the refrigerant.
When the control device controls the operation of the heating device to control the temperature inside the storage to a set temperature, when the detected humidity of the humidity sensor becomes higher than the set humidity and equal to or higher than the set dehumidifying humidity. A temperature / humidity control cabinet characterized in that a dehumidifying operation for operating the compressor is executed in a state where the rotation speed of the fan motor is rotated at a rotation speed higher than the rotation speed at which the storage is cooled. In the temperature / humidity control cabinet according to claim 1,
When the set lower limit humidity lower than the set humidity is detected by the humidity sensor within a predetermined time after the execution of the dehumidification operation is started,
A temperature / humidity control cabinet characterized in that the humidification is controlled by the humidifier while dehumidification is continued by the dehumidification operation. In the temperature / humidity control cabinet according to claim 1 or 2.
When the humidity sensor detects the dehumidification humidity or higher and the detection temperature of the temperature sensor detects the minimum set lower limit temperature set lower than the set temperature.
A temperature / humidity control cabinet characterized in that the execution of the dehumidifying operation is stopped while the heating device is operated.

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