Method, device, heat pump baking room and storage medium for determining motor phase sequence

Abstract

The present application discloses a method for determining the phase sequence of motors. The heat pump baking room includes: a baking room body and a heat pump unit; the baking room body includes: a fresh air damper and a moisture exhaust damper; the heat pump unit includes: a first motor and a second motor; the first motor is connected to the fresh air damper to drive the opening and closing of the fresh air damper; the second motor is connected to the moisture exhaust damper to drive the opening and closing of the moisture exhaust damper; the method includes: when the heat pump unit is operating, controlling the relays of the first motor and the second motor to perform multiple different suction combinations; obtaining the dry bulb temperature and the external environment temperature in the baking room body for each suction combination; determining the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry bulb temperatures and external environment temperatures. In this way, the phase sequence of the motor can be adjusted to the correct phase sequence even when the heat pump unit is not shut down, ensuring the baking quality of the materials. The present application also discloses a device for determining the phase sequence of motors, a heat pump baking room, and a storage medium.

Description

Technical Field

[0001] This application relates to the technical field of drying, for example, to a method, a device, a heat pump baking room, and a storage medium for determining the phase sequence of a motor. Background Art

[0002] A baking room is used for baking substances such as crops. During the baking process, humidity control is particularly important. Usually, the method of controlling the opening and closing of the fresh air valve and the moisture exhaust valve is adopted to realize the fresh air intake and moisture exhaust control of the baking room. Since the fresh air valve and the moisture exhaust valve used by the heat pump unit and the baking room body are generally not produced by the same company. At the same time, the two are also in different construction stages during the construction of the baking room. Usually, the baking room body is first built in place, and then the heat pump unit is installed. Or, during the energy-saving transformation of an old coal-fired baking room, the fresh air exhaust and moisture exhaust valves are already on the original baking room body, and there is a certain degree of uncertainty in the linkage control between the heat pump unit control system and the fresh air valve and the moisture exhaust valve. Problems such as incorrect phase sequence of the valve driving motor and reverse jamming of the air door are likely to occur, resulting in problems such as the air door not opening, affecting the normal use of the baking room.

[0003] The related art discloses a phase sequence adjustment device, including: a three-phase power input terminal, a three-phase power output terminal, a phase sequence identification unit, and a switch control unit; the three-phase power input terminal is connected to the three-phase power output terminal, the phase sequence identification unit is connected to the three-phase power input terminal, and the phase sequence identification unit is used to identify the phase sequence of the three-phase power input terminal; the switch control unit includes a control module and a switch module, the control module is connected to the phase sequence identification unit, the switch module includes a first switch group and a second switch group, the first switch group is connected between the three-phase power input terminal and the three-phase power output terminal in a positive phase sequence connection method, and the second switch group is connected between the three-phase power input terminal and the three-phase power output terminal in a reverse phase sequence connection method; the control module is used to control the first switch group to be in a connected state and the second switch group to be in a disconnected state when the phase sequence identification unit identifies that the three-phase power input terminal is in a positive phase sequence, and control the first switch group to be in a disconnected state and the second switch group to be in a connected state when the phase sequence identification unit identifies that the three-phase power input terminal is in a reverse phase sequence.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the above device, when the phase sequence adjustment device is connected between the three-phase power supply and the equipment, the three-phase power output terminal can be connected to the three-phase power connection terminal of the equipment in a preset phase sequence connection method as needed, so that the three-phase power connection terminal of the equipment is in a preset phase sequence. However, it is not applicable to the determination of the phase sequence corresponding to the baking room air valve switch.

[0006] Moreover, for a curing barn, to solve the above problems, usually after the start of flue-curing and the actual use of the heat pump unit, manual inspection is relied on to check the opening and closing conditions of the fresh air and moisture exhaust valves. If the fresh air valve or the moisture exhaust valve cannot be opened normally, the baking process unit can only be powered off, and after manually adjusting the phase sequence of the corresponding valve drive motor, the baking can be restarted.

[0007] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0008] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a comprehensive review nor is it intended to identify key / important elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0009] Embodiments of the present disclosure provide a method, apparatus, heat pump curing barn, and storage medium for determining the phase sequence of a motor to ensure the baking quality of materials when adjusting the phase sequence of the motor.

[0010] In some embodiments, the heat pump curing barn includes: a curing barn body and a heat pump unit; the curing barn body includes: a fresh air valve and a moisture exhaust valve; the heat pump unit includes: a first motor and a second motor; the first motor is connected to the fresh air valve to drive the opening and closing of the fresh air valve; the second motor is connected to the moisture exhaust valve to drive the opening and closing of the moisture exhaust valve; the method includes: controlling the relays of the first motor and the second motor to perform multiple different suction combinations when the heat pump unit is running; obtaining the dry-bulb temperature inside the curing barn body and the external environment temperature for each suction combination; and determining the target phase sequence of the first motor and the second motor based on multiple sets of corresponding dry-bulb temperatures and external environment temperatures.

[0011] In some embodiments, the apparatus includes: a processor and a memory storing program instructions, and the processor is configured to execute the aforementioned method for determining the phase sequence of a motor when running the program instructions.

[0012] In some embodiments, the heat pump curing barn includes: a curing barn body, the curing barn body includes: a fresh air valve and a moisture exhaust valve; a heat pump unit, the heat pump unit includes: a first motor and a second motor; the first motor is connected to the fresh air valve to drive the opening and closing of the fresh air valve; the second motor is connected to the moisture exhaust valve to drive the opening and closing of the moisture exhaust valve; and the aforementioned apparatus for determining the phase sequence of a motor is installed in the curing barn body.

[0013] In some embodiments, the storage medium stores program instructions that, when running, execute the aforementioned method for determining the phase sequence of the motor.

[0014] The method, apparatus, heat pump baking room, and storage medium for determining the phase sequence of the motor provided by the embodiments of the present disclosure can achieve the following technical effects:

[0015] First, control the relays of the first motor and the second motor to perform multiple different suction combinations to control the opening and closing of the fresh air valve and the moisture exhaust valve. When the relay performs each suction combination, obtain the corresponding dry bulb temperature and the external ambient temperature. The opening and closing states of the fresh air valve and the moisture exhaust valve will affect the dry bulb temperature. Then, based on multiple groups of corresponding dry bulb temperatures and external ambient temperatures, the suction combination when the fresh air valve and the moisture exhaust valve are both open can be determined, that is, the target phase sequence of the first motor and the second motor can be determined. In this way, the phase sequence of the motor can be adjusted to the correct phase sequence even when the heat pump unit is not shut down, without interrupting the baking process, ensuring the baking quality of the materials. Moreover, there is no need for manual inspection and confirmation, avoiding the situation of missed inspection, and further ensuring the control accuracy of the humidity in the baking room.

[0016] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0018] Figure 1 is a schematic structural diagram of the heat pump baking room provided by the embodiments of the present disclosure;

[0019] Figure 2 is a schematic diagram of a method for determining the phase sequence of a motor provided by the embodiments of the present disclosure;

[0020] Figure 3 is a schematic diagram of another method for determining the phase sequence of a motor provided by the embodiments of the present disclosure;

[0021] Figure 4 is a schematic diagram of another method for determining the phase sequence of a motor provided by the embodiments of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of the relays of the first motor and the second motor provided by the embodiments of the present disclosure;

[0023] Figure 6 is a schematic diagram of an apparatus for determining the phase sequence of a motor provided by the embodiments of the present disclosure;

[0024] Figure 7 It is a schematic diagram of another device provided by an embodiment of the present disclosure for determining the phase sequence of a motor;

[0025] Figure 8 It is a schematic diagram of a heat pump baking room provided by an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1. Outdoor unit; 2. Indoor heat exchange unit; 3. Heating chamber; 4. Loading chamber; 5. Circulation fan; 6. Fresh air damper; 7. Moisture exhaust damper; 8. Moisture exhaust air duct; 9. Air outlet; 10. Air return opening; 11. Tobacco rack; 12. Tobacco leaves; 13. Upper shelf dry bulb temperature sensor; 14. Upper shelf wet bulb temperature sensor; 15. Lower shelf dry bulb temperature sensor; 16. Lower shelf wet bulb temperature sensor; 17. First motor; 171. First relay; 172. Second relay; 18. Second motor; 181. Third relay; 182. Fourth relay. Detailed implementation manners

[0028] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be elaborated in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other instances, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0029] In the specification, claims and above-mentioned drawings of the embodiments of the present disclosure, the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] Unless otherwise specified, the term "plurality" means two or more.

[0031] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0032] The term "and / or" is a description of the associated relationship of objects and indicates that there can be three relationships. For example, A and / or B means: A or B, or, A and B these three relationships.

[0033] The term "corresponding" may refer to an association relationship or a binding relationship. That A corresponds to B means there is an association relationship or a binding relationship between A and B.

[0034] Combined Figure 1 As shown, an embodiment of the present disclosure provides a heat pump curing barn, including: a heat pump unit and a curing barn body.

[0035] The heat pump unit includes: an outdoor unit 1 and an indoor heat exchange unit 2. The outdoor unit 1 is communicated with the indoor heat exchange unit 2. The indoor heat exchange unit 2 is arranged inside the curing barn body. The refrigerant circulates between the outdoor unit 1 and the indoor heat exchange unit 2. The refrigerant flows into the indoor heat exchange unit 2 and provides heat to the curing barn body.

[0036] The curing barn body includes: a heating chamber 3 and a loading chamber 4. A circulation fan 5 is arranged inside the heating chamber 3. The indoor heat exchange unit 2 is arranged inside the heating chamber 3 and is located below the circulation fan 5. A fresh air inlet is provided on the side wall of the heating chamber 3, and the position of the fresh air inlet is lower than the position of the indoor heat exchange unit 2. A fresh air valve 6 is arranged at the fresh air inlet. A moisture exhaust outlet is also provided on the side wall of the heating chamber 3, and the moisture exhaust outlet is arranged near the bottom of the heating chamber 3. A moisture exhaust valve 7 is arranged at the moisture exhaust outlet. A moisture exhaust duct 8 is constructed inside the heating chamber 3, and the outlet of the moisture exhaust duct 8 corresponds to the moisture exhaust valve 7.

[0037] The first motor is connected to the fresh air valve 6 to drive the opening and closing of the fresh air valve 6. The second motor is connected to the moisture exhaust valve 7 to drive the opening and closing of the moisture exhaust valve 7. Both the first motor and the second motor correspond to multiple relays.

[0038] An air outlet 9 is provided on the heating chamber 3, and the position of the air outlet 9 is higher than the position of the circulation fan 5. The air outlet 9 is communicated with the top of the loading chamber 4. A return air inlet 10 is also provided on the heating chamber 3, and the position of the return air inlet 10 is close to the inlet of the moisture exhaust duct 8. Both the return air inlet 10 and the inlet of the moisture exhaust duct 8 are communicated with the bottom of the loading chamber 4.

[0039] The loading chamber 4 is filled with materials to be baked. For example, if the materials to be baked are tobacco leaves 12, then multiple layers of tobacco racks 11 are arranged inside the loading chamber 4, and the tobacco leaves 12 are suspended on the tobacco racks 11. Another example is that if the materials to be baked are fresh flowers, then multiple layers of trays are arranged inside the loading chamber 4, and the fresh flowers are placed in the trays.

[0040] The interior of the loading chamber 4 is divided into multiple areas, and a wet bulb temperature sensor and a dry bulb temperature sensor are arranged in pairs in each area. For example, the interior of the loading chamber 4 is divided into an upper area and a middle and lower area. An upper shed wet bulb temperature sensor 14 and an upper shed dry bulb temperature sensor 13 are arranged in the upper area; a lower shed wet bulb temperature sensor 16 and a lower shed dry bulb temperature sensor 15 are arranged in the middle and lower area.

[0041] Optionally, the heat pump curing barn is an air source heat pump curing barn.

[0042] The curing barn body further includes: a controller. The controller is communicatively connected to the outdoor unit 1 and the circulation fan 5 to control the start and stop of the outdoor unit 1 and the circulation fan 5. The controller is also communicatively connected to the dry bulb temperature sensor and the wet bulb temperature sensor to obtain the parameters detected by the sensors. The controller is also connected to the first motor and the second motor to control the opening and closing states of the fresh air damper 6 and the moisture exhaust damper 7.

[0043] Combined Figure 2 As shown, the embodiment of the present disclosure provides a method for determining the phase sequence of a motor, including:

[0044] S201, when the heat pump unit is operating, the controller controls the relays of the first motor and the second motor to perform multiple different suction combinations.

[0045] S202, the controller obtains the dry bulb temperature inside the curing barn body and the external environment temperature at each suction combination.

[0046] S203, the controller determines the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry bulb temperatures and external environment temperatures.

[0047] The controller controls the operation of the heat pump unit. Specifically, it controls the compressor and the circulation fan to start. The temperature inside the curing barn body continuously rises. The controller controls the relays corresponding to the first motor and the relays corresponding to the second motor to perform multiple different suction combinations. Specifically, the first motor corresponds to multiple relays, and the second motor also corresponds to multiple relays. Therefore, here, performing multiple different suction combinations means: each time, controlling one relay corresponding to the first motor to suck in, and at the same time controlling one relay corresponding to the second motor to suck in, thereby forming a suction combination. Only the correct suction combination can control the fresh air damper and the moisture exhaust damper to open. Each suction combination is different. When the relay performs each suction combination, the dry bulb temperature inside the curing barn body (loading chamber) is obtained through the dry bulb temperature sensor, and the external environment temperature is obtained through the temperature sensor arranged in the external environment. Since the relay is controlled to perform multiple different suction combinations, multiple groups of corresponding dry bulb temperatures and external environment temperatures can be obtained. The opening and closing of the fresh air damper and the moisture exhaust damper will affect the dry bulb temperature. Therefore, according to multiple groups of corresponding dry bulb temperatures and external environment temperatures, the target phase sequence of the first motor and the second motor is determined. When the first motor and the second motor are in the target phase sequence, the fresh air damper and the moisture exhaust damper can be controlled to open and close simultaneously.

[0048] In the embodiments of the present disclosure, first, the relays of the first motor and the second motor are controlled to perform multiple different suction combinations to control the opening and closing of the fresh air damper and the dehumidification damper. When the relay performs each suction combination, the corresponding dry bulb temperature and the external environment temperature are obtained. The opening and closing states of the fresh air damper and the dehumidification damper will affect the dry bulb temperature. Then, based on multiple groups of corresponding dry bulb temperatures and external environment temperatures, the suction combination in which the fresh air damper and the dehumidification damper are simultaneously opened can be determined, that is, the target phase sequence of the first motor and the second motor can be determined. In this way, when the heat pump unit is not shut down, the phase sequence of the motor can also be adjusted to the correct phase sequence without interrupting the baking process, ensuring the baking quality of the material. Moreover, there is no need for manual inspection and confirmation, avoiding the situation of missed inspection, and thus ensuring the control accuracy of the humidity in the baking room.

[0049] Combined with Figure 3 As shown, the embodiments of the present disclosure provide another method for determining the phase sequence of a motor, including:

[0050] S301, the controller controls the compressor and the circulation fan to start.

[0051] S302, the controller controls one relay corresponding to the first motor to be suctioned, and one relay corresponding to the second motor to be suctioned; wherein, in the case of controlling the suction combination of the two relays, all other relays are in the off state.

[0052] S303, until the multiple relays corresponding to the first motor and the multiple relays corresponding to the second motor complete non-repetitive suction combinations.

[0053] S304, the controller obtains the dry bulb temperature and the external environment temperature in the baking room body when each suction combination is performed.

[0054] S305, the controller determines the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry bulb temperatures and external environment temperatures.

[0055] First, control the compressor and the circulation fan to start to control the operation of the heat pump unit. Then, control one relay corresponding to the first motor to close, and at the same time control one relay corresponding to the second motor to close, so as to perform a closing combination. After a preset time duration, obtain the dry-bulb temperature and the external environment temperature. Then, control the currently closed relay corresponding to the first motor to continue to close, control the currently closed relay corresponding to the second motor to open, and other relays corresponding to the second motor to close; or, control the currently closed relay corresponding to the second motor to continue to close, control the currently closed relay corresponding to the first motor to open, and other relays corresponding to the first motor to close; or, control the currently closed relay corresponding to the first motor and the currently closed relay corresponding to the second motor to open, and control other relays corresponding to the first motor and other relays corresponding to the second motor to close. Thus, perform a second closing combination. After a preset time duration, obtain the dry-bulb temperature and the external environment temperature again. Repeat this multiple times, and the relays performing each closing combination do not repeat. Until all closing combinations of all relays corresponding to the first motor and all relays corresponding to the second motor are completed. Moreover, when controlling two relays to close, all other relays are in the open state. When controlling the relays to perform each closing combination, obtain the dry-bulb temperature and the external environment temperature inside the baking room body, so as to obtain multiple groups of corresponding dry-bulb temperatures and external environment temperatures. According to the multiple groups of corresponding dry-bulb temperatures and external environment temperatures, determine the target phase sequence of the first motor and the second motor. In this way, by controlling the relays corresponding to the first motor and the second motor to perform non-repeating closing combinations, determine the target phase sequence that can control the fresh air damper and the moisture exhaust damper to open and close simultaneously.

[0056] Combined with Figure 4 As shown, the embodiment of the present disclosure provides another method for determining the phase sequence of a motor, including:

[0057] S401, the controller controls the compressor and the circulation fan to start.

[0058] S402, the controller controls one relay corresponding to the first motor to close and one relay corresponding to the second motor to close; wherein, when controlling the closing combination of the two relays, all other relays are in the open state.

[0059] S403, until multiple relays corresponding to the first motor and multiple relays corresponding to the second motor complete non-repeating closing combinations.

[0060] S404, the controller obtains the dry-bulb temperature and the external environment temperature inside the baking room body when performing each closing combination.

[0061] S405, the controller calculates the temperature difference between each group of corresponding dry-bulb temperature and external environment temperature.

[0062] At S406, the controller determines the target phase sequences of the first motor and the second motor based on multiple temperature differences.

[0063] After obtaining multiple sets of corresponding dry-bulb temperatures and external ambient temperatures, calculate the temperature differences between the corresponding dry-bulb temperature and external ambient temperature for each set, thereby obtaining multiple temperature differences.

[0064] Damp discharge in the baking room requires the fresh air damper and the damp discharge damper to cooperate in opening and closing to achieve the discharge of high-humidity air inside the baking room body and introduce low-temperature and dry air from the outside for replacement.

[0065] When the relays of the first motor and the second motor perform different suction combinations, there will be four results in the actual performance of the two dampers:

[0066] ① Fresh air damper open + damp discharge damper open: At this time, both dampers are open, and low-temperature and dry fresh air can be smoothly introduced into the baking room body, and high-temperature and high-humidity air is discharged outside the baking room body. At this time, the ventilation volume is the largest, corresponding to the largest temperature drop inside the baking room body, that is, the largest temperature difference.

[0067] ② Fresh air damper closed + damp discharge damper open: At this time, the fresh air damper is not opened, and low-temperature and dry air from the outside cannot be smoothly introduced. After part of the high-temperature and high-humidity air inside the baking room body is discharged. Due to the lack of fresh air introduction to form a negative pressure, the ventilation volume is limited. The temperature drop inside the baking room body is in a non-maximum state, that is, the temperature difference is not the largest.

[0068] ③ Fresh air damper open + damp discharge damper closed: At this time, the damp discharge damper is not opened, and the inside of the baking room body is basically in a positive pressure state under the action of the circulation fan. Although the fresh air damper is in the open state, the static pressure inside the baking room body is higher than the air pressure inside and outside the baking room body, and basically no low-temperature and dry air from the outside enters. Therefore, the temperature drop inside the baking room body is in a non-maximum state, that is, the temperature difference is not the largest.

[0069] ④ Fresh air damper closed + damp discharge damper closed: Both dampers are in the closed state, and there is basically no air exchange inside and outside the baking room body, and basically no temperature drop occurs inside the baking room body.

[0070] Based on the above, determine the largest temperature difference among the calculated multiple temperature differences. When the temperature difference is the largest, the fresh air damper and the damp discharge damper are opened simultaneously. Therefore, determine the relay suction combination of the first motor and the second motor corresponding to the largest temperature difference value as the target phase sequence.

[0071] Optionally, after controlling the operation of the heat pump unit and before controlling the relay of the first motor and the second motor to perform each closing combination, the controller controls the temperature inside the baking room to rise to a preset temperature. In this way, the temperature conditions are the same when the relay performs each closing combination, and the temperature approaches the normal operating temperature of the heat pump baking room. Ensure that when the relay performs different closing combinations, the temperature differences can be distinguished to facilitate determining the target phase sequence.

[0072] Optionally, after obtaining the dry-bulb temperature inside the baking room and the external environment temperature each time, and before controlling the relay of the first motor and the second motor to perform the next closing combination, the controller controls all the relays to be in the off state. That is, after each closing combination is executed, the fresh air damper and the moisture exhaust damper are controlled to be closed. In this way, the baking room body does not exchange air with the external environment. Thus, before each new closing combination is executed, the baking environment inside the baking room body tends to be consistent, which is convenient for accurately determining the target phase sequence.

[0073] The following will illustrate the specific implementation process of the method for determining the motor phase sequence provided in this embodiment:

[0074] As Figure 5 shown, the first motor 17 corresponds to the first relay 171 and the second relay 172, and the second motor 18 corresponds to the third relay 181 and the fourth relay 182.

[0075] After the heat pump unit is installed in place in the baking room body and the wiring harnesses are connected to the fresh air damper and the moisture exhaust damper of the baking room body, the heat pump unit is powered on and started. Then the following motor phase sequence determination program is executed:

[0076] ① Control the outdoor unit compressor and the circulation fan to start running. Control the first relay, the second relay, the third relay, and the fourth relay to be in the off state, thereby controlling the fresh air damper and the moisture exhaust damper to close.

[0077] Control the baking room to rise to the preset temperature T0. Then control the first relay and the third relay to close. After continuously performing the moisture exhaust operation for a preset duration t0, record the dry-bulb temperature Tg1 inside the baking room body and the external environment temperature Ta1 at this time. Then the temperature difference ΔT1=(Tg1 - Ta1). Then control the first relay and the third relay to open, and restore the fresh air damper and the moisture exhaust damper to the state before the heat pump unit is started, that is, control the fresh air damper and the moisture exhaust damper to close.

[0078] ② Control the heat pump unit to reheat the baking chamber body to the preset temperature T0. Then control the first relay and the fourth relay to close. After continuously performing the moisture exhaust operation for the preset duration t0, record the dry-bulb temperature Tg2 of the baking chamber and the external environment temperature Ta2 at this time, then the temperature difference ΔT2 = (Tg2 - Ta2). Then control the first relay and the fourth relay to open, so that the fresh air valve and the moisture exhaust valve return to the state before the heat pump unit is turned on, that is, control the fresh air valve and the moisture exhaust valve to close.

[0079] ③ Control the heat pump unit to reheat the baking chamber body to the preset temperature T0. Then control the second relay and the fourth relay to close. After continuously performing the moisture exhaust operation for the preset duration t0, record the dry-bulb temperature Tg3 of the baking chamber and the external environment temperature Ta3 at this time, then the temperature difference ΔT3 = (Tg3 - Ta3). Then control the second relay and the fourth relay to open, so that the fresh air valve and the moisture exhaust valve return to the state before the heat pump unit is turned on, that is, control the fresh air valve and the moisture exhaust valve to close.

[0080] ④ Control the heat pump unit to reheat the baking chamber body to the preset temperature T0. Then control the second relay and the third relay to close. After continuously performing the moisture exhaust operation for the preset duration t0, record the dry-bulb temperature Tg4 of the baking chamber and the external environment temperature Ta4 at this time, then the temperature difference ΔT4 = (Tg4 - Ta4). Then control the second relay and the third relay to open, so that the fresh air valve and the moisture exhaust valve return to the state before the heat pump unit is turned on, that is, control the fresh air valve and the moisture exhaust valve to close.

[0081] After performing the above steps ① to ④, control the outdoor unit compressor and the circulation fan to stop running. Take the relay closing combination corresponding to the maximum of ΔT1, ΔT2, ΔT3, and ΔT4 as the correct phase sequence for controlling the fresh air valve and the moisture exhaust valve, that is, the target phase sequence. Store the target phase sequence in the controller, and the stored target phase sequence can be used for subsequent baking of materials.

[0082] Combined with Figure 6 As shown, the embodiment of the present disclosure provides a device 60 for determining the phase sequence of a motor, including: a control module 61, an acquisition module 62, and a determination module 63. The control module 61 is configured to control the relays of the first motor and the second motor to perform multiple different closing combinations when the heat pump unit is running. The acquisition module 62 is configured to acquire the dry-bulb temperature in the baking chamber body and the external environment temperature at each closing combination. The determination module 63 is configured to determine the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry-bulb temperatures and external environment temperatures.

[0083] By using the device for determining the phase sequence of a motor provided in the embodiments of the present disclosure, the relays of the first motor and the second motor are first controlled to perform multiple different suction combinations to control the opening and closing of the fresh air damper and the dehumidifying air damper. When the relay performs each suction combination, the corresponding dry bulb temperature and the external ambient temperature are obtained. The opening and closing states of the fresh air damper and the dehumidifying air damper will affect the dry bulb temperature. Then, based on multiple sets of corresponding dry bulb temperatures and external ambient temperatures, the suction combination when the fresh air damper and the dehumidifying air damper are opened simultaneously can be determined, that is, the target phase sequence of the first motor and the second motor can be determined. In this way, the phase sequence of the motor can be adjusted to the correct phase sequence without stopping the heat pump unit, without interrupting the baking process, and ensuring the baking quality of the material. Moreover, there is no need for manual inspection and confirmation, avoiding the situation of missed inspection, and further ensuring the control accuracy of the humidity in the baking room.

[0084] As shown in Figure 7 FIG. 5, an embodiment of the present disclosure provides a device 70 for determining the phase sequence of a motor, including a processor 71 and a memory 72. Optionally, the device may further include a communication interface 73 and a bus 74. Among them, the processor 71, the communication interface 73, and the memory 72 can complete mutual communication through the bus 74. The communication interface 73 can be used for information transmission. The processor 71 can call the logical instructions in the memory 72 to execute the method for determining the phase sequence of the motor in the above embodiments.

[0085] In addition, when the logical instructions in the above-mentioned memory 72 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0086] The memory 72, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 71 executes functional applications and data processing by running the program instructions / modules stored in the memory 72, that is, implements the method for determining the phase sequence of the motor in the above embodiments.

[0087] The memory 72 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 72 may include a high-speed random access memory and may also include a non-volatile memory.

[0088] As shown in Figure 8As shown in the figure, an embodiment of the present disclosure provides a heat pump baking room 80, including: a baking room body, and the device 60(70) for determining the motor phase sequence described above. The device 60(70) for determining the motor phase sequence is installed on the baking room body. The installation relationship described here not only includes being placed inside the product, but also includes the installation connection with other components of the product, including but not limited to physical connection, electrical connection, or signal transmission connection, etc. Those skilled in the art can understand that the device 60(70) for determining the motor phase sequence can be adapted to a feasible product body, and thus other feasible embodiments can be realized.

[0089] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are set to execute the method for determining the motor phase sequence described above.

[0090] The above computer-readable storage medium can be a transient computer-readable storage medium or a non-transient computer-readable storage medium.

[0091] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The foregoing storage medium can be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, etc., which are various media that can store program codes, or it can also be a transient storage medium.

[0092] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only for describing the embodiments and do not limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to also include the plural forms. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations of one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups of these. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, or apparatus that includes the element. Herein, what each embodiment focuses on may be the differences from other embodiments, and the same or similar parts among the embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method parts disclosed in the embodiments, the relevant parts may refer to the description of the method parts.

[0093] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner may depend on the specific application and design constraints of the technical solution. The technical personnel can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The technical personnel can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0094] In the embodiments disclosed in this article, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the various functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0095] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to the embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions marked in the block can occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks can also occur in a different order than that disclosed in the description. Sometimes, there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. Each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for determining the phase sequence of a motor, which is applied to a heat pump baking room, and the heat pump baking room includes: Roasting chamber body and heat pump unit; The roasting chamber body includes: a fresh air damper and a moisture exhaust damper; the heat pump unit includes: a first motor and a second motor; the first motor is connected to the fresh air damper to drive the opening and closing of the fresh air damper; the second motor is connected to the moisture exhaust damper to drive the opening and closing of the moisture exhaust damper; characterized in that, The method includes: When the heat pump unit is operating, controlling the relays of the first motor and the second motor to perform multiple different closing combinations; Obtaining the dry bulb temperature and the external environment temperature in the roasting chamber body for each closing combination; Determining the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry bulb temperatures and external environment temperatures; The determining the target phase sequence of the first motor and the second motor according to multiple groups of corresponding dry bulb temperatures and external environment temperatures includes: calculating the temperature difference between each group of corresponding dry bulb temperatures and external environment temperatures; determining the target phase sequence of the first motor and the second motor according to multiple temperature differences; the determining the target phase sequence of the first motor and the second motor according to multiple temperature differences includes: determining the maximum temperature difference among the calculated multiple temperature differences; determining the closing combination of the relay of the first motor and the relay of the second motor corresponding to the maximum temperature difference as the target phase sequence.

2. The method according to claim 1, characterized in that, The heat pump unit includes: a compressor and a circulation fan; The operation of the heat pump unit includes: Starting the compressor; and, Starting the circulation fan.

3. The method according to claim 1, characterized in that The first motor and the second motor respectively correspond to multiple relays; The controlling the relays of the first motor and the second motor to perform multiple different closing combinations includes: Controlling one relay corresponding to the first motor to close and one relay corresponding to the second motor to close; Until the multiple relays corresponding to the first motor and the multiple relays corresponding to the second motor perform non-repeating closing combinations; Wherein, when controlling the closing combination of two relays, all other relays are in the open state.

4. The method according to any one of claims 1 to 3, characterized in that, After the heat pump unit operates and before controlling the relays of the first motor and the second motor to perform each closing combination, the method further includes: Controlling the roasting chamber body to heat up to a preset temperature.

5. The method according to any one of claims 1 to 3, characterized in that After each obtaining the dry bulb temperature and the external environment temperature in the roasting chamber body and before controlling the relays of the first motor and the second motor to perform the next closing combination, the method further includes: Controlling all relays to be in the open state.

6. A device for determining the phase sequence of a motor, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the method for determining the motor phase sequence according to any one of claims 1 to 5 when running the program instructions.

7. A heat pump curing barn, characterized in that, Including: A roasting chamber body, the roasting chamber body includes: a fresh air damper and a moisture exhaust damper; A heat pump unit, the heat pump unit includes: a first motor and a second motor; the first motor is connected to the fresh air damper to drive the opening and closing of the fresh air damper; the second motor is connected to the moisture exhaust damper to drive the opening and closing of the moisture exhaust damper; and, The device for determining the phase sequence of the motor as claimed in claim 6 is installed on the baking room body.

8. A storage medium stores program instructions, characterized in that, When the program instructions are running, they execute the method for determining the phase sequence of the motor as claimed in any one of claims 1 to 5.

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