CN212211435U - Heating unit and refrigerating and freezing device with same - Google Patents
Heating unit and refrigerating and freezing device with same Download PDFInfo
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- CN212211435U CN212211435U CN202020468269.3U CN202020468269U CN212211435U CN 212211435 U CN212211435 U CN 212211435U CN 202020468269 U CN202020468269 U CN 202020468269U CN 212211435 U CN212211435 U CN 212211435U
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Abstract
The utility model provides a heating unit and have this heating unit's cold-stored refrigeration device. The heating unit comprises a cylinder body for placing the object to be treated and an electromagnetic wave generating circuit. At least one part of the electromagnetic wave generating circuit is arranged in the cylinder or reaches the cylinder so as to generate electromagnetic waves in the cylinder to heat the object to be processed. The electromagnetic wave generating circuit comprises an electromagnetic wave generating module for generating an electromagnetic wave signal and a power supply module for providing electric energy for the electromagnetic wave generating module. The heating unit further comprises at least one cooling fan, and the cooling fan is set to at least generate airflow which passes through the electromagnetic wave generation module and then passes through the power supply module, so that the structure compactness is improved, the occupied space is reduced, and the cooling efficiency of the electromagnetic wave generation module and the power supply module is improved on the whole.
Description
Technical Field
The utility model relates to a food processing field especially relates to an electromagnetic wave heating unit and have this heating unit's cold-stored refrigeration device.
Background
During the freezing process, the quality of the food is maintained, however, the frozen food needs to be heated before processing or eating. In order to facilitate a user to freeze and heat food, the related art generally defrosts food by providing an electromagnetic wave heating unit in a refrigerator or the like.
However, the electromagnetic wave generating circuit of the heating unit generates more heat in the working process, which not only causes the temperature fluctuation of the storage chamber and affects the preservation quality of the food materials in the storage chamber, but also reduces the working efficiency of the electromagnetic wave generating circuit, and if the electromagnetic wave generating circuit is in a high-temperature state for a long time, the service life of the electric device can be seriously reduced.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to overcome at least one technical drawback of the prior art and to provide an electromagnetic wave heating unit.
The utility model discloses a further purpose of first aspect reduces the energy consumption.
The utility model discloses another further purpose of first aspect is to improve the radiating efficiency.
It is an object of the second aspect of the present invention to provide a refrigerating and freezing apparatus having an electromagnetic wave heating unit.
According to a first aspect of the present invention, there is provided a heating unit, comprising:
the cylinder is used for placing an object to be treated; and
an electromagnetic wave generating circuit, at least a part of which is arranged in the cylinder or reaches the cylinder, so as to generate electromagnetic waves in the cylinder to heat the object to be processed; wherein the electromagnetic wave generating circuit includes:
an electromagnetic wave generation module configured to generate an electromagnetic wave signal; and
a power supply module configured to supply electric energy to the electromagnetic wave generation module; and the heating unit further comprises:
and the heat dissipation fan is arranged to at least generate airflow which passes through the electromagnetic wave generation module and then the power supply module.
Optionally, the at least one heat dissipation fan is configured to adjust a rotation speed thereof according to the output power of the electromagnetic wave generation module and the electromagnetic wave absorption rate of the object to be processed.
Optionally, the electromagnetic wave generating circuit further includes:
the radiation unit is arranged in the cylinder and is electrically connected with the electromagnetic wave generation module so as to generate electromagnetic waves in the cylinder; and
and the bidirectional coupler is connected between the radiation unit and the electromagnetic wave generation module in series and is used for detecting a forward power signal output by the electromagnetic wave generation module and a reverse power signal returned to the electromagnetic wave generation module so as to further obtain the electromagnetic wave absorption rate of the object to be processed.
Optionally, a heat conducting glue is disposed on a surface of the power supply module on an air supply path of the at least one cooling fan.
Optionally, the heating unit further comprises:
the radiating fins are arranged to be thermally connected with the electromagnetic wave generation module and comprise a plurality of rib plates which are arranged in parallel at intervals; wherein
The at least one heat dissipation fan is arranged on one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and is used for sucking gas from one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and blowing the gas out along the plurality of rib plates; and is
The extending directions of the plurality of ribbed plates are set to be parallel to the direction of the electromagnetic wave generation module close to the power supply module.
Optionally, the plurality of rib plates form an accommodating space recessed toward a direction close to the electromagnetic wave generation module, and the at least one cooling fan is disposed in the accommodating space; and is
The projection of the at least one cooling fan in the imaginary plane parallel to the plurality of ribs completely falls into at least one of the ribs, and a space is left between the lateral edge of the completely falling at least one rib close to the electromagnetic wave generation module and the lateral edge of the completely falling at least one rib far away from the electromagnetic wave generation module.
According to a second aspect of the present invention, there is provided a refrigerating and freezing apparatus, comprising:
a case defining at least one storage compartment; and
a heating unit according to any one of the above; wherein
The barrel is arranged in one storage room, and the electromagnetic wave generation module and the power supply module are arranged on the outer side of the heat insulation layer of the box body.
Optionally, the refrigeration and freezing apparatus further comprises:
a housing configured to house the electromagnetic wave generation module, the power supply module, and the at least one heat dissipation fan; and is
The housing is provided with a plurality of heat dissipation vents for the at least one heat dissipation fan to suck air and blow out the heat-exchanged air.
Optionally, the heating unit further comprises:
the radiating fins are arranged to be thermally connected with the electromagnetic wave generation module and comprise a plurality of rib plates which are arranged in parallel at intervals; wherein
The at least one heat dissipation fan is arranged on one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and is used for sucking gas from one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and blowing the gas out along the plurality of rib plates; and is
And a space is reserved between the radiating fin and the housing.
Optionally, the electromagnetic wave generation module and the power supply module are arranged above the heat insulation layer and are arranged at intervals in the transverse direction; and is
The plurality of rib plates extend along the transverse direction, and openings for air to flow in are formed in the parts of the plurality of rib plates, which are positioned on the front side of the at least one cooling fan, and the at least one cooling fan is also arranged to suck air from the openings.
The utility model discloses a make radiator fan produce earlier via the electromagnetic wave at least and take place the module via the air current of power module again, improved compact structure nature, reduced occupation space, improved the radiating efficiency of electromagnetic wave emergence module and power module on the whole.
Further, the utility model discloses output according to the electromagnetic wave takes place the module and the electromagnetic wave absorption rate of pending thing adjusts radiator fan's rotational speed, compare in the rotational speed according to the electromagnetic wave takes place the temperature regulation radiator fan of module, need not to set up extra temperature sensing device, can reflect the heat that the electromagnetic wave takes place the module and produce more accurately, when the realization takes place the abundant heat dissipation of module and power module to the electromagnetic wave, the energy waste and the noise pollution of having avoided unexpected, user experience has been improved.
Further, the utility model discloses set up radiating fin into and take place the module thermal connection with the electromagnetic wave, make radiator fan fall into at least one floor completely and take place the module and keep away from the side direction edge that the module took place with the electromagnetic wave that is close to of this at least one floor and all leave the interval with the projection in the hypothetical plane that is on a parallel with a plurality of floors, can improve radiator fan's intake to quick, evenly take away the heat on the radiating fin, further improved the radiating efficiency that the module took place for the electromagnetic wave.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic exploded view of a refrigeration and freezing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a heating unit of one embodiment of the present invention;
FIG. 3 is a schematic block diagram of the controller of FIG. 2;
fig. 4 is a schematic structural view of the electromagnetic wave generating module of fig. 2;
FIG. 5 is a schematic partial cross-sectional view of the refrigeration freezer of FIG. 1 taken along a vertical plane;
FIG. 6 is a schematic enlarged view of region A in FIG. 5;
FIG. 7 is a schematic partial cross-sectional view of the refrigeration freezer of FIG. 1 taken along a horizontal plane;
figure 8 is a schematic partial isometric view of the refrigeration freezer of figure 1;
FIG. 9 is a schematic partial cross-sectional view of the refrigerated freezer of FIG. 1 taken along another vertical plane;
fig. 10 is a schematic flow chart of a control method for a heating unit according to an embodiment of the present invention;
fig. 11 is a detailed flowchart of a control method for a heating unit according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic exploded view of a refrigeration and freezing apparatus 200 according to an embodiment of the present invention; fig. 2 is a schematic structural view of the heating unit 100 according to an embodiment of the present invention. Referring to fig. 1 and 2, the refrigerating and freezing apparatus 200 may include a cabinet 210 defining at least one storage compartment, at least one door body for opening and closing the at least one storage compartment, a heating unit 100, and a controller. In the present invention, the refrigerating and freezing device 200 can be a device having a refrigerating or freezing function, such as a refrigerator, a freezer, and a wine cabinet.
The cabinet 210 may include an inner container defining at least one storage compartment, an outer container, and an insulation layer disposed between the inner container and the outer container.
The heating unit 100 may include a cylinder 110, a door, and an electromagnetic wave generating circuit, which are disposed in one storage compartment of the cabinet 210.
Specifically, the drum 110 may define a heating chamber for placing the object 170 to be processed, and a front wall thereof may be opened with an access opening for accessing the object 170 to be processed.
The door body may be mounted to the barrel 110 by any suitable means, such as a sliding rail, a hinge, etc., for opening and closing the access opening.
The electromagnetic wave generating circuit may be at least partially disposed in the cylinder 110 or reach the cylinder 110 to generate electromagnetic waves in the cylinder 110 to heat the object 170.
The cylinder 110 and the door body can be respectively provided with electromagnetic shielding characteristics, so that the door body is in conductive connection with the cylinder 110 in a closed state to prevent electromagnetic leakage.
Fig. 3 is a schematic block diagram of the controller 140 of fig. 2. Referring to fig. 3, the controller 140 may include a processing unit 141 and a storage unit 142. Wherein the storage unit 142 stores a computer program 143, and the computer program 143 is used for implementing the control method according to the embodiment of the present invention when being executed by the processing unit 141.
The electromagnetic wave generation module 120 may be configured to generate an electromagnetic wave signal. Fig. 4 is a schematic structural diagram of the electromagnetic wave generation module 120 in fig. 2. Referring to fig. 4, in some embodiments, the electromagnetic wave generation module 120 may include a frequency source 121, a power amplifier 122, and a processing unit 123.
The power supply module 180 may be electrically connected to the electromagnetic wave generating module 120 to provide electric energy for the electromagnetic wave generating module 120, so that the electromagnetic wave generating module 120 generates an electromagnetic wave signal.
The radiation antenna 150 may be disposed in the cylinder 110 and electrically connected to the electromagnetic wave generating module 120 to generate electromagnetic waves with corresponding frequencies according to the electromagnetic wave signals to heat the object 170 to be processed in the cylinder 110.
The matching module 160 may be connected in series between the electromagnetic wave generating module 120 and the radiation antenna 150, and may be configured to adjust a load impedance of the electromagnetic wave generating module 120 by adjusting its own impedance, so as to implement load matching and improve heating efficiency.
In some further embodiments, the cylinder 110 may be made of metal to act as a receiver pole for the radiating antenna 150. In this embodiment, the barrel 110 itself is the electromagnetic shielding feature of the barrel 110.
In still further embodiments, the electromagnetic wave generating circuit further comprises a receiving plate disposed opposite the radiation antenna 150 and electrically connected to the electromagnetic wave generating module 120. In this embodiment, the inner wall of the cylinder 110 may be coated with a metal coating or attached with a metal mesh or the like as an electromagnetic shielding feature of the cylinder 110.
In particular, the heating unit 100 may further include at least one heat dissipation fan for dissipating heat of the electromagnetic wave generation module 120 and the power supply module 180. In the present invention, the number of the heat dissipation fans 230 may be one, two, or more than two.
The utility model discloses a radiator fan 230 takes place module 120 and power module 180 heat dissipation for the electromagnetic wave simultaneously to the realization takes place module 120 and power module 180's high-efficient cooling to the electromagnetic wave, improves compact structure nature, reduces occupation space.
In some embodiments, the power supply module 180 may be disposed downstream of the electromagnetic wave generation module 120. That is, the heat dissipation fan 230 at least generates an airflow passing through the electromagnetic wave generation module 120 and then the power supply module 180, so as to further improve the structural compactness and reduce the occupied space while achieving efficient cooling of the electromagnetic wave generation module 120 and the power supply module 180.
Figure 5 is a schematic partial cross-sectional view of the refrigeration freezer of figure 1 taken along a vertical plane. Referring to fig. 5, the electromagnetic wave generating module 120 and the power supply module 180 may be disposed outside the heat insulating layer of the box 210 to reduce the influence of heat generated by the electromagnetic wave generating circuit on the storage compartment of the box 210, thereby improving the preservation quality of food materials in the storage compartment.
The electromagnetic wave generation module 120 and the power supply module 180 may be disposed in the storage compartment and outside the heating chamber of the cylinder 110.
For the convenience of understanding of the present invention, the present invention will be described below by taking as an example that the number of the heat dissipation fans 230 is one and the electromagnetic wave generation module 120 and the power supply module 180 are disposed outside the heat insulation layer of the box 210.
In some embodiments, a surface of the power module 180 on the air blowing path of the heat dissipation fan 230 may be provided with a heat conductive paste (not shown) to improve the heat dissipation efficiency of the power module 180.
Figure 7 is a schematic partial cross-sectional view of the refrigerated freezer of figure 1 taken along a horizontal plane. Referring to fig. 5 and 7, the heating unit 100 may further include a heat radiation fin 240 thermally connected to the electromagnetic wave generating module 120.
The heat dissipation fins 240 may include a plurality of ribs arranged in parallel and at intervals to increase the heat dissipation area of the electromagnetic wave generation module 120, thereby increasing the heat dissipation efficiency of the electromagnetic wave generation module 120.
The heat dissipation fins 240 may further include a base plate integrally formed with a plurality of ribs for thermal connection with the electromagnetic wave generating module 120.
The heat dissipation fan 230 may be disposed on a side of the heat dissipation fin 240 away from the electromagnetic wave generating module 120. And the heat dissipation fan 230 may be configured to suck air from a side thereof away from the electromagnetic wave generation module 120 and blow the air out along the plurality of ribs, so as to reduce an occupied space of the electromagnetic wave generation module 120, the power supply module 180, and the heat dissipation fan 230 in an axial direction of the heat dissipation fan 230 while ensuring a heat dissipation effect.
The extending direction of the plurality of ribs may be set to be parallel to the direction in which the electromagnetic wave generating module 120 approaches the power supply module 180, so that the airflow after heat exchange with the electromagnetic wave generating module 120 flows through the power supply module 180 and takes away heat generated by the power supply module 180.
The plurality of ribs may form an accommodating space recessed toward the direction close to the electromagnetic wave generating module 120, and the heat dissipation fan 230 may be disposed in the accommodating space.
The projection of the heat dissipation fan 230 in the imaginary plane parallel to the plurality of ribs can completely fall into at least one rib, and a space is left between the projection and the lateral edge of the completely fallen at least one rib close to the electromagnetic wave generating module 120, so as to increase the air intake of the heat dissipation fan 230, quickly and uniformly take away the heat on the heat dissipation fins 240, and further increase the heat dissipation efficiency of the electromagnetic wave generating module 120.
Fig. 8 is a schematic partial isometric view of the refrigeration freezer 200 shown in fig. 1. Referring to fig. 8, the refrigerating and freezing apparatus 200 may further include a housing 220. The housing 220 may be configured to cover the electromagnetic wave generation module 120, the power supply module 180, and the heat dissipation fan 230, so as to improve the safety of the refrigeration and freezing apparatus 200, prevent the electromagnetic wave generation module 120, the power supply module 180, and the heat dissipation fan 230 from depositing dust, and prolong the service life.
The casing 220 may be provided with a plurality of heat dissipation vents for the heat dissipation fan 230 to suck air and blow out the heat-exchanged air.
The plurality of heat dissipation vents may be divided into a plurality of intake ports 221a and a plurality of exhaust ports 221 b. The plurality of air inlets 221a may be distributed at front and rear circumferential side plates of the housing 220. The plurality of air outlets 221b may be distributed on two lateral circumferential side plates of the casing 220, that is, the heat dissipation fan 230 sucks air from the front and rear sides of the casing 220 and blows out the heat-exchanged air to the lateral sides of the casing 220.
The heat dissipation fins 240 may be spaced apart from the housing 220 to reduce wind resistance, increase the amount of air supplied to the heat dissipation fan 230, and further increase heat dissipation efficiency.
The access openings of the storage compartments of the case 210 may be all forward openings 241. The electromagnetic wave generation module 120 and the power supply module may be disposed above the heat insulation layer and spaced apart in a lateral direction to further reduce wind resistance.
Referring to fig. 7, the plurality of ribs may extend in the transverse direction, and a portion of the plurality of ribs located at the front side of the heat dissipation fan 230 may be provided with an opening 241 for air to flow in, and the heat dissipation fan 230 may be further configured to suck air from the opening 241, so as to further increase the air intake of the heat dissipation fan 230.
Fig. 6 is a schematic enlarged view of the region a in fig. 5. Referring to fig. 6 and 8, the casing 220 is provided with a plurality of liquid guiding portions 222 extending inwardly and upwardly from the lower peripheries of the plurality of heat dissipating vents, respectively, i.e., one liquid guiding portion 222 extending inwardly and upwardly from the lower periphery of each heat dissipating vent, so as to prevent liquid from entering the casing 220 and damaging the electric devices in the casing 220.
The upper edge of each liquid guiding portion 222 may be lower than the upper edge of the corresponding heat dissipation vent to reduce wind resistance and improve heat dissipation efficiency.
Figure 9 is a schematic partial cross-sectional view of the refrigerated freezer of figure 1 taken along another vertical plane. Referring to fig. 6, 8 and 9, the refrigerating and freezing device 200 may further include a circuit box 250 fixedly coupled to the case 210. The components covered by the cover 220 may be disposed in the circuit box 250 to facilitate assembly of the whole device.
In some embodiments, the outer case of the case 210 may be formed with a mounting opening 241 penetrating the outer case in a thickness direction, and the circuit box 250 may be mounted to the mounting opening 241.
One circumferential side plate of the circuit box 250 may include an inclined section 254 extending obliquely outward from bottom to top, and the electrical connection line of the electromagnetic wave generating module 120 may be disposed to electrically connect with the electrical devices in the cylinder 110 through the inclined section 254, to secure the structural strength of the circuit box 250, and to facilitate the electrical connection of the electrical devices.
In some embodiments, two annular ribs 251 are formed at the periphery of the circuit box 250 extending upward. The cover 220 can be clamped between two annular ribs 251 to achieve a good seal.
Specifically, each liquid guide portion 222 may be formed with a first liquid guide surface 222a and a second liquid guide surface 222 b. The first fluid guide surface 222a may be provided to extend inward and protrude outward from a lower periphery of one heat dissipation vent. The second liquid guiding surface 222b may be provided to extend inward from an upper end of the first liquid guiding surface 222a and protrude outward to guide the liquid thereon into the water storage groove formed between the two annular ribs 251, prevent the liquid from entering the interior of the housing 220, and prevent the liquid from dropping or splashing to the outside of the outer annular ribs 251.
The outer annular ribs 251 may be provided with at least one drain 252 to drain the liquid between the two annular ribs 251.
The annular rib 251 located at the inner side may be provided with a trim portion 253 extending outward and bent downward. The housing 220 is correspondingly formed with a bayonet, and the fastening portion 253 may be configured to be fastened with the bayonet, so as to improve stability of the housing 220.
In some embodiments, the cover 220 may further include a fixing portion for fixing and connecting with the outer case of the box 210, so as to further improve the stability of the cover 220.
It should be noted that, in the electric circuit system of the refrigerating and freezing apparatus 200, other electric devices except the electromagnetic wave generating circuit may be disposed outside the heat insulating layer of the box 210 as needed, and may be accommodated in the circuit box 250 according to any of the foregoing embodiments and covered with the cover 220 according to any of the foregoing embodiments, so as to prevent damage to the electric devices due to dust and liquid.
In some embodiments, the processing unit 141 may be configured to obtain the forward power signal output by the electromagnetic wave generating module 120 and the reverse power signal returned to the electromagnetic wave generating module 120 when the electromagnetic wave generating module 120 is in operation, calculate the electromagnetic wave absorption rate of the object to be processed 170 according to the forward power signal and the reverse power signal, and adjust the rotation speed of the heat dissipation fan 230 according to the power value of the forward power signal (i.e., the output power of the electromagnetic wave generating module 120) and the electromagnetic wave absorption rate.
A bidirectional coupler 130 may be connected in series between the electromagnetic wave generating module 120 and the radiation antenna 150 to monitor a forward power signal output by the electromagnetic wave generating module 120 and a reverse power signal returned to the electromagnetic wave generating module 120.
The utility model discloses the rotational speed of radiator fan 230 is adjusted to the electromagnetic wave absorption rate according to the output of electromagnetic wave generation module 120 and pending thing 170, compare in the rotational speed of temperature regulation radiator fan 230 according to electromagnetic wave generation module 120, need not to set up extra temperature sensing device, can reflect the heat that electromagnetic wave generation module 120 produced more accurately, when the realization takes place module 120 and power module 180's abundant radiating to the electromagnetic wave, the energy waste and the noise pollution of having avoided the unexpected, user experience has been improved.
In some further embodiments, the processing unit 141 may be configured to match the rotation speed of the heat dissipation fan 230 according to a preset rotation speed comparison relationship according to the power value of the forward power signal and the electromagnetic wave absorption rate. Wherein, the rotating speed contrast relation records the power values in different ranges and the rotating speeds corresponding to the electromagnetic wave absorption rates in different ranges.
Under the condition that the power value of the forward power signal is the same, the rotation speed of the heat dissipation fan 230 may be negatively correlated with the average value of the electromagnetic wave absorption rates in different ranges; under the condition of the same electromagnetic wave absorption rate, the rotation speed of the cooling fan 230 may be positively correlated with the average value of the power values in different ranges, so as to efficiently and energy-efficiently cool the electromagnetic wave generating module 120.
The comparison relationship of the rotation speed can also be a formula which records different power values, electromagnetic wave absorption rates and rotation speeds.
The processing unit 141 may be further configured to obtain the temperature of the processing unit 123 of the electromagnetic wave generation module 120 in real time when the electromagnetic wave generation module 120 is operated, and control the frequency source 121 and the power amplifier 122 to stop operating when the temperature of the processing unit 123 is greater than or equal to a preset temperature threshold value, so as to ensure the service life of the processing unit 123.
The processing unit 141 may be further configured to control the heat dissipation fan 230 to operate at the rated speed for a first preset time and then stop operating after the frequency source 121 and the power amplifier 122 are controlled to stop operating, so as to quickly dissipate heat in the enclosure 220 and avoid heat accumulation.
Fig. 10 is a schematic flow chart of a control method for the heating unit 100 according to an embodiment of the present invention. Referring to fig. 10, the control method for the heating unit 100 according to the present invention executed by the controller 140 of any of the above embodiments may include the following steps:
step S1002: a forward power signal output by the electromagnetic wave generation module 120 and a reverse power signal returned to the electromagnetic wave generation module 120 are acquired.
Step S1004: the electromagnetic wave absorption rate of the object to be processed 170 is calculated from the forward power signal and the reverse power signal.
Step S1006: the rotation speed of the heat dissipation fan 230 is adjusted according to the power value of the forward power signal and the electromagnetic wave absorption rate.
The utility model discloses the rotational speed of radiator fan 230 is adjusted to the electromagnetic wave absorption rate according to the output of electromagnetic wave generation module 120 and pending thing 170, compare in the rotational speed of temperature regulation radiator fan 230 according to electromagnetic wave generation module 120, need not to set up extra temperature sensing device, can reflect the heat that electromagnetic wave generation module 120 produced more accurately, when the realization takes place module 120 and power module 180's abundant radiating to the electromagnetic wave, the energy waste and the noise pollution of having avoided the unexpected, user experience has been improved.
Fig. 11 is a detailed flowchart of a control method for the heating unit 100 according to an embodiment of the present invention. Referring to fig. 11, the control method for the heating unit 100 of the present invention may include the following steps:
step S1102: the temperature of the processing unit of the electromagnetic wave generation module 120 is acquired.
Step S1104: it is determined whether the temperature of the processing unit 123 of the electromagnetic wave generation module 120 itself is greater than or equal to a preset temperature threshold. If yes, go to step S1106; if not, go to step S1108.
Step S1106: the frequency source 121 and the power amplifier 122 are controlled to stop working, and the heat dissipation fan 230 works at the rated rotation speed for a first preset time and stops working after the first preset time, so as to ensure the service life of the processing unit 123 and avoid heat accumulation in the housing 220.
Step S1108: a forward power signal output by the electromagnetic wave generation module 120 and a reverse power signal returned to the electromagnetic wave generation module 120 are acquired. In this step, the forward power signal and the reverse power signal may be monitored by the bidirectional coupler 130 connected in series between the electromagnetic wave generation module 120 and the radiation antenna 150. Step S1110 is executed.
Step S1110: the electromagnetic wave absorption rate of the object to be processed 170 is calculated from the forward power signal and the reverse power signal. Step S1112 is executed.
Step S1112: the rotation speed of the heat dissipation fan 230 is matched according to the power value of the forward power signal and the electromagnetic wave absorption rate according to a preset rotation speed comparison relationship. Wherein, under the condition that the power value of the forward power signal is the same, the rotation speed of the cooling fan 230 may be negatively correlated with the average value of the electromagnetic wave absorption rates in different ranges; under the condition of the same electromagnetic wave absorption rate, the rotation speed of the cooling fan 230 may be positively correlated with the average value of the power values in different ranges, so as to efficiently and energy-efficiently cool the electromagnetic wave generating module 120. The process returns to step S1102.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A heating unit, comprising:
the cylinder is used for placing an object to be treated; and
an electromagnetic wave generating circuit, at least a part of which is arranged in the cylinder or reaches the cylinder, so as to generate electromagnetic waves in the cylinder to heat the object to be processed; wherein the electromagnetic wave generating circuit includes:
an electromagnetic wave generation module configured to generate an electromagnetic wave signal; and
a power supply module configured to supply electric energy to the electromagnetic wave generation module; and the heating unit further comprises:
and the heat dissipation fan is arranged to at least generate airflow which passes through the electromagnetic wave generation module and then the power supply module.
2. The heating unit of claim 1,
the at least one cooling fan is configured to adjust the rotating speed of the electromagnetic wave generating module according to the output power of the electromagnetic wave generating module and the electromagnetic wave absorption rate of the object to be processed.
3. The heating unit of claim 2, wherein the electromagnetic wave generating circuit further comprises:
the radiation unit is arranged in the cylinder and is electrically connected with the electromagnetic wave generation module so as to generate electromagnetic waves in the cylinder; and
and the bidirectional coupler is connected between the radiation unit and the electromagnetic wave generation module in series and is used for detecting a forward power signal output by the electromagnetic wave generation module and a reverse power signal returned to the electromagnetic wave generation module so as to further obtain the electromagnetic wave absorption rate of the object to be processed.
4. The heating unit of claim 1,
and heat-conducting glue is arranged on the surface of the power supply module, which is positioned on the air supply path of the at least one cooling fan.
5. The heating unit of claim 1, further comprising:
the radiating fins are arranged to be thermally connected with the electromagnetic wave generation module and comprise a plurality of rib plates which are arranged in parallel at intervals; wherein
The at least one heat dissipation fan is arranged on one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and is used for sucking gas from one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and blowing the gas out along the plurality of rib plates; and is
The extending directions of the plurality of ribbed plates are set to be parallel to the direction of the electromagnetic wave generation module close to the power supply module.
6. The heating unit of claim 5,
the plurality of rib plates form an accommodating space which is concave towards the direction close to the electromagnetic wave generation module, and the at least one cooling fan is arranged in the accommodating space; and is
The projection of the at least one cooling fan in the imaginary plane parallel to the plurality of ribs completely falls into at least one of the ribs, and a space is left between the lateral edge of the completely falling at least one rib close to the electromagnetic wave generation module and the lateral edge of the completely falling at least one rib far away from the electromagnetic wave generation module.
7. A refrigeration freezer apparatus, comprising:
a case defining at least one storage compartment; and
a heating unit according to any one of claims 1-4; wherein
The barrel is arranged in one storage room, and the electromagnetic wave generation module and the power supply module are arranged on the outer side of the heat insulation layer of the box body.
8. A refrigerator-freezer according to claim 7, further comprising:
a housing configured to house the electromagnetic wave generation module, the power supply module, and the at least one heat dissipation fan; and is
The housing is provided with a plurality of heat dissipation vents for the at least one heat dissipation fan to suck air and blow out the heat-exchanged air.
9. A refrigerator-freezer according to claim 8, wherein the heating unit further comprises:
the radiating fins are arranged to be thermally connected with the electromagnetic wave generation module and comprise a plurality of rib plates which are arranged in parallel at intervals; wherein
The at least one heat dissipation fan is arranged on one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and is used for sucking gas from one side of the heat dissipation fins, which is far away from the electromagnetic wave generation module, and blowing the gas out along the plurality of rib plates; and is
And a space is reserved between the radiating fin and the housing.
10. A refrigerator-freezer according to claim 9,
the electromagnetic wave generation module and the power supply module are arranged above the heat insulation layer and are arranged at intervals in the transverse direction; and is
The plurality of rib plates extend along the transverse direction, and openings for air to flow in are formed in the parts of the plurality of rib plates, which are positioned on the front side of the at least one cooling fan, and the at least one cooling fan is also arranged to suck air from the openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020468269.3U CN212211435U (en) | 2020-04-02 | 2020-04-02 | Heating unit and refrigerating and freezing device with same |
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| CN202020468269.3U CN212211435U (en) | 2020-04-02 | 2020-04-02 | Heating unit and refrigerating and freezing device with same |
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| CN212211435U true CN212211435U (en) | 2020-12-22 |
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| CN202020468269.3U Active CN212211435U (en) | 2020-04-02 | 2020-04-02 | Heating unit and refrigerating and freezing device with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021164648A1 (en) * | 2020-02-18 | 2021-08-26 | 青岛海尔电冰箱有限公司 | Control method for heating unit, heating unit, and refrigerating and freezing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021164648A1 (en) * | 2020-02-18 | 2021-08-26 | 青岛海尔电冰箱有限公司 | Control method for heating unit, heating unit, and refrigerating and freezing apparatus |
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