Steaming oven

Abstract

The utility model belongs to the technical field of household appliances, and discloses a steaming oven, in the utility model, a cooling mechanism for cooling a liner cavity and an inner liner are mutually independent, so that the inner liner and the cooling mechanism can be firstly assembled respectively in the process of producing the steaming oven, then the cooling mechanism and the inner liner are assembled together, the whole process is time-saving and labor-saving, and the production efficiency is improved. Therefore, the production efficiency can be improved. Moreover, the circulating fan is used for realizing internal circulation of air in the container cavity, and the evaporator is in direct contact with the airflow when the airflow flows through the refrigeration cavity, so that the airflow is cooled, the heat exchange efficiency is high, the cooling speed is high, and the use experience of a user can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a steam oven. Background Art

[0002] As a household appliance that combines an oven and a steamer into one, a steam oven has multiple cooking functions such as baking, steaming, and microwave. In addition to cooking food, users sometimes also need to keep the food fresh after cooking. For this reason, the steam ovens in the prior art generally also have an integrated preservation function. Specifically, in the prior art, an evaporation tube is generally wound around the outer side of the inner tank of the steam oven. The evaporation tube is used to cool the cavity of the inner tank, thereby meeting the user's preservation needs. For the steam ovens in the prior art, on the one hand, during the production process of the steam oven, the manufacturer needs to assemble the evaporation tube simultaneously during the assembly of the inner tank. The whole process is time-consuming and labor-intensive, resulting in low production efficiency. On the other hand, the heat exchange efficiency between the evaporation tube and the cavity is low, resulting in a slow cooling rate, which in turn affects the user's experience.

[0003] Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] The utility model aims to provide a steam oven to solve the problem that the production efficiency of the steam oven is low and the cooling speed is slow due to the low heat exchange efficiency between the evaporation tube and the gallbladder cavity, thereby affecting the user experience.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Steam oven, comprising:

[0007] An inner liner has a cavity formed therein, and an air inlet and an air outlet are arranged on the wall of the inner liner; and

[0008] The cooling mechanism includes a mounting cover, a refrigeration system and a circulating fan. The mounting cover is arranged on the outside of the inner tank and surrounds the outer periphery of the air inlet and the air outlet. The mounting cover and the inner tank form a refrigeration cavity. The evaporator of the refrigeration system and the blades of the circulating fan are both mounted on the mounting cover and are both located in the refrigeration cavity. The circulating fan can circulate the air in the tank cavity between the tank cavity and the refrigeration cavity through the air inlet and the air outlet.

[0009] Preferably, the steam oven further comprises a heater, and the heater is installed in the refrigeration cavity.

[0010] Preferably, a first temperature sensor is disposed in the bile cavity, and a second temperature sensor is disposed in the refrigeration cavity.

[0011] Preferably, the refrigeration system includes a condenser, which is arranged on the outside of the mounting cover and connected to the evaporator. The steam oven also includes an air duct, which is arranged on the outside of the inner tank, one end of the air duct is connected to the outside, and the other end of the air duct is connected to the air inlet of the condenser.

[0012] Preferably, a water outlet is provided at the bottom of the mounting cover, one end of the water outlet is connected to the refrigeration cavity, and the other end of the water outlet is connected to the outside.

[0013] Preferably, the circulating fan includes a plurality of blades, and the plurality of blades are evenly arranged around the axis of the mounting cover. The inner wall of the inner tank is formed with a sinker, and the sinker protrudes toward the inner side of the inner tank and is coaxially arranged with the mounting cover. The mounting cover and the sinker surround and form the refrigeration chamber. The sinker includes a first plate portion and a second plate portion. The axis of the first plate portion coincides with the axis of the mounting cover, and the diameter of the cross-section of the first plate portion gradually decreases from a side close to the mounting cover to a side away from the mounting cover. The second plate portion is formed on a side of the first plate portion away from the mounting cover and is directly opposite to the circulating fan. The air outlet is arranged on the first plate portion, and the air inlet is arranged on the second plate portion.

[0014] Preferably, the liner comprises a body and a ventilation hood, the body is provided with a through hole, the ventilation hood is arranged at the periphery of the through hole and is located on the inner side of the body, the mounting cover is arranged at the periphery of the through hole and is located on the outer side of the body, and the ventilation hood forms the sink;

[0015] The main body is provided with an installation groove, which surrounds the outer periphery of the through hole. The sinking platform also includes a third plate portion, which is located on a side of the first plate portion away from the second plate portion. The third plate portion is sunk into the installation groove, and the third plate portion is in contact with the groove wall of the installation groove along a side of the second plate portion radially away from the axis of the installation cover.

[0016] Preferably, the outer side of the main body and the side of the mounting cover facing away from the ventilation cover are covered with thermal insulation cotton.

[0017] Preferably, a boss is protruding from the outer side of the bladder wall, and the mounting cover is buckled on the outer periphery of the boss.

[0018] Preferably, a first heat-insulating silicone pad is pressed and defined between the boss and the mounting cover.

[0019] Beneficial effects of the utility model:

[0020] In the utility model, the cooling mechanism and the inner tank for cooling the chamber are independent of each other. Therefore, in the process of producing the steam oven, the inner tank and the cooling mechanism can be assembled separately first, and then the cooling mechanism and the inner tank can be assembled together. The whole process saves time and effort, thereby improving production efficiency. Moreover, in the utility model, the circulating fan is used to realize the internal circulation of the air in the chamber, and the evaporator is in direct contact with the airflow when the airflow flows through the refrigeration chamber, thereby cooling it. The heat exchange efficiency is high and the cooling speed is fast, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of the steam oven in the embodiment of the utility model;

[0022] Figure 2 It is an exploded view of the steam oven in the embodiment of the utility model;

[0023] Figure 3 is a cross-sectional view of the steam oven in the embodiment of the utility model along the longitudinal section of the first plate portion;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0025] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle;

[0027] Figure 7 yes Figure 3 A partial enlarged view of point D in the middle;

[0028] Figure 8 It is a structural schematic diagram of the ventilation hood in the embodiment of the utility model;

[0029] Fig. 9 It is a schematic diagram of the structure of the cooling mechanism in the embodiment of the utility model;

[0030] Fig.10 This is the second structural schematic diagram of the steam oven in the embodiment of the utility model.

[0031] In the figure:

[0032] 1. Inner liner; 11. Gallbladder cavity; 111. First temperature sensor; 12. Main body; 121. Perforation; 122. Mounting groove; 123. Boss; 124. Second thermal insulation cotton; 125. Third thermal insulation cotton; 13. Ventilation hood; 131. First plate; 13111. Air outlet; 132. Second plate; 1321. Air inlet; 13211. First air inlet; 13212. Second air inlet; 133. Third plate; 14. First thermal insulation silicone pad; 15. Panel; 151. Third air inlet; 16. Opening; 17. Flanging; 18. Thermal insulation silicone ring;

[0033] 2. Cooling mechanism; 21. Mounting cover; 211. Refrigeration chamber; 2111. Second temperature sensor; 212. Water outlet; 213. First thermal insulation cotton; 22. Refrigeration system; 221. Evaporator; 222. Condenser; 2221. Air inlet; 23. Circulating fan; 231. Blades; 232. Driving module; 24. Mounting frame; 25. Second thermal insulation silicone pad;

[0034] 3. Heater;

[0035] 4. Wind duct; 41. Wind path. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] See also Figures 1 to 10 The present embodiment provides a steam oven, which includes an inner tank 1 and a cooling mechanism 2. The inner tank 1 is provided with a tank cavity 11. The inner tank wall of the inner tank 1 is provided with an air inlet 1321 and an air outlet. The cooling mechanism 2 includes a mounting cover 21, a refrigeration system 22 and a circulation fan 23. The mounting cover 21 is provided on the outer side of the inner tank 1 and surrounds the outer periphery of the air inlet 1321 and the air outlet. The mounting cover 21 and the inner tank 1 are configured to form a refrigeration cavity 211. The evaporator 22 of the refrigeration system 22 is provided with a cooling device 23. The blades 21 and the circulating fan 231 are both installed on the mounting cover 21 and are both located in the refrigeration chamber 211. The circulating fan 23 can circulate the air in the gallbladder chamber 11 between the gallbladder chamber 11 and the refrigeration chamber 211 through the air inlet 1321 and the air outlet. That is, in this embodiment, the air in the gallbladder chamber 11 is circulated internally by the circulating fan 23, and the refrigeration system 22 is used to cool the air flowing through the refrigeration chamber 211, thereby reducing the temperature in the gallbladder chamber 11.

[0041] Specifically, the circulating fan 23 can inhale the air in the gallbladder cavity 11 into the refrigeration cavity 211 through the air inlet 1321, and the evaporator 221 of the refrigeration system 22 can cool the airflow entering the refrigeration cavity 211 through the air inlet 1321, and the circulating fan 23 can also send the air in the refrigeration cavity 211 into the gallbladder cavity 11 through the air outlet, thereby realizing the internal circulation of the air in the gallbladder cavity 11, and the circulating fan 23 sends the cooled air into the gallbladder cavity 11 through the air outlet, thereby cooling the gallbladder cavity 11 of the inner tank 1, thereby meeting the user's preservation needs. Since the evaporator 221 directly contacts the circulating airflow during the internal circulation of the air in the gallbladder cavity 11, thereby cooling the airflow, the heat exchange efficiency between the evaporator 221 and the airflow is high, thereby increasing the cooling speed, thereby improving the user's experience.

[0042] Moreover, based on the content mentioned above, the cooling mechanism 2 and the inner pot 1 in this embodiment are independent of each other. Therefore, in the process of producing the steam oven, the inner pot 1 and the cooling mechanism 2 can be assembled separately first, and then the mounting cover 21 of the cooling mechanism 2 can be installed to the corresponding position on the outside of the inner pot 1. The whole process saves time and labor, thereby improving production efficiency.

[0043] Based on the above, the cooling mechanism 2 and the inner tank 1 for cooling the gallbladder cavity 11 are independent of each other. Therefore, in the process of producing the steam oven, the inner tank 1 and the cooling mechanism 2 can be assembled separately, and then the cooling mechanism 2 and the inner tank 1 can be assembled together. The whole process saves time and effort, thereby improving production efficiency. Moreover, in this embodiment, the circulating fan 23 is used to realize the internal circulation of the air in the gallbladder cavity 11, and the evaporator 221 is directly in contact with the airflow when the airflow flows through the refrigeration cavity 211, thereby cooling it. The heat exchange efficiency is high and the cooling speed is fast, thereby improving the user experience.

[0044] Exemplarily, in this embodiment, the circulating fan 23 includes a plurality of blades 231, and the plurality of blades 231 are evenly arranged around the axis of the mounting cover 21. A sink is formed on the wall of the inner tank 1, and the sink is convexly arranged toward the inner side of the inner tank 1 and is coaxially arranged with the mounting cover 21. The mounting cover 21 and the sink form a refrigeration chamber 211. The sink includes a first plate portion 131 and a second plate portion 132. The axis of the first plate portion 131 coincides with the axis of the mounting cover 21, and the diameter of the cross section of the first plate portion 131 gradually decreases from a side close to the mounting cover 21 to a side away from the mounting cover 21. The second plate portion 132 is formed on a side of the first plate portion 131 away from the mounting cover 21 and is directly opposite to the circulating fan 23. The air outlet is arranged on the first plate portion 131. The air inlet 1321 is arranged on the second plate portion 132. When the circulating fan 23 is working, a plurality of blades 231 rotate around the axis of the mounting cover 21, thereby sucking the air in the gallbladder cavity 11 into the refrigeration cavity 211 through the air inlet 1321. At the same time, during the rotation of the blades 231, under the action of centrifugal force, the air flow can be thrown out from between two adjacent blades 231 and can return to the gallbladder cavity 11 through the air outlet. In this embodiment, the air inlet 1321 is directly opposite to the plurality of blades 231, and the air outlet is located on the flow path of the air flow thrown out between two adjacent blades 231, thereby ensuring that the circulating fan 23 can smoothly circulate the air in the gallbladder cavity 11 between the gallbladder cavity 11 and the refrigeration cavity 211.

[0045] It is worth noting that, in the present embodiment, the air inlet 1321 includes a plurality of first air inlet holes 13211 and a plurality of second air inlet holes 13212, wherein the first air inlet holes 13211 are strip holes and extend in a direction perpendicular to the axial direction of the mounting cover 21, and the plurality of first air inlet holes 13211 are evenly arranged around the axis of the mounting cover 21, while the plurality of second air inlet holes 13212 are evenly arranged in the area surrounded by the plurality of first air inlet holes 13211, thereby ensuring that the circulating fan 23 can smoothly and quickly suck the air in the gallbladder cavity 11 into the refrigeration cavity 211. In addition, the air outlet includes a plurality of air outlet holes 13111, and the plurality of air outlet holes 13111 are evenly arranged around the axis of the mounting cover 21, thereby ensuring that the airflow thrown out from between any two adjacent blades 231 can smoothly and quickly return to the gallbladder cavity 11.

[0046] Based on the above, this embodiment can increase the speed at which the air in the gallbladder cavity 11 circulates between the gallbladder cavity 11 and the refrigeration cavity 211 , thereby further increasing the cooling speed, and further improving the user experience.

[0047] Furthermore, the inner liner 1 includes a main body 12 and a ventilation hood 13. A through hole 121 is opened on the main body 12. The ventilation hood 13 is covered on the outer periphery of the through hole 121 and is located on the inner side of the main body 12. The ventilation hood 13 forms the sinking platform mentioned above. The mounting cover 21 is covered on the outer periphery of the through hole 121 and is located on the outer side of the main body 12. Based on the above, the manufacturer can first produce the ventilation hood 13 with the air inlet 1321 and the air outlet and the main body 12 separately, and then assemble the ventilation hood 13 and the main body 12 to form the inner liner 1. The whole process saves time and labor, thereby further improving production efficiency.

[0048] In addition, a mounting groove 122 is provided on the main body 12, and the mounting groove 122 surrounds the outer periphery of the through hole 121, and the sinker also includes a third plate portion 133. In other words, the ventilation hood 13 includes not only the first plate portion 131 and the second plate portion 132, but also a third plate portion 133. The third plate portion 133 is located on the side of the first plate portion 131 away from the second plate portion 132, and the third plate portion 133 is sunk into the mounting groove 122, and the third plate portion 133 is in contact with the groove wall of the mounting groove 122 along the radial side of the second plate portion 132 away from the axis of the mounting hood 21, that is, the side wall of the mounting groove 122 can position the ventilation hood 13, thereby ensuring that the installation position of the ventilation hood 13 is accurate.

[0049] It is understandable that the ventilation hood 13 can be fixedly connected to the main body 12 by bonding, bolting, riveting, etc., and this is not specifically limited in the present embodiment.

[0050] Furthermore, a boss 123 is protruding from the outer side of the gallbladder wall, and the mounting cover 21 is buckled on the outer periphery of the boss 123. Specifically, the boss 123 is formed on the main body 12, and the boss 123 can provide positioning for the installation of the mounting cover 21, thereby facilitating the assembly of the mounting cover 21, that is, this embodiment can facilitate the assembly of the cooling mechanism 2, thereby further improving production efficiency.

[0051] It can be understood that in this embodiment, the mounting cover 21 is screwed to the boss 123. Of course, in other optional embodiments, the mounting cover 21 can also be fixedly connected to the boss 123 by other means such as bonding or riveting, and this embodiment does not make specific limitations on this.

[0052] It is worth mentioning that a first thermal insulation silicone pad 14 is pressed and limited between the boss 123 and the mounting cover 21. On the one hand, the first thermal insulation silicone pad 14 plays a sealing role between the boss 123 and the mounting cover 21, and on the other hand, it can also reduce the heat exchange between the air in the refrigeration chamber 211 and the outside air, thereby improving the heat exchange efficiency between the evaporator 221 and the airflow flowing through the refrigeration chamber 211, and further improving the cooling speed.

[0053] Further, it can be understood that, in addition to the plurality of blades 231, the circulating fan 23 also includes a driving module 232, which is used to drive the plurality of blades 231 to rotate, and the driving module 232 is installed on the mounting frame 24, and the mounting frame 24 is fixedly connected to the side of the mounting cover 21 away from the ventilation cover 13, and a second thermal insulation silicone pad 25 is pressed and limited between the mounting cover 21 and the mounting frame 24. The second thermal insulation silicone pad 25 can prevent the air in the refrigeration chamber 211 from exchanging heat with the outside air through the mounting frame 24, thereby further improving the heat exchange efficiency between the evaporator 221 and the airflow flowing through the refrigeration chamber 211, and further improving the cooling rate.

[0054] In addition, the outer side of the main body 12 and the side of the mounting cover 21 facing away from the ventilation hood 13 are covered with thermal insulation cotton. Specifically, the side of the mounting cover 21 facing away from the ventilation hood 13 is covered with a first thermal insulation cotton 213, and the first thermal insulation cotton 213 surrounds the outer periphery of the mounting frame 24. The outer side of the main body 12 is covered with a second thermal insulation cotton 124 and a third thermal insulation cotton 125, wherein the second thermal insulation cotton 124 is covered on the outer side of a side of the main body 12 with a perforation 121 and surrounds the outer periphery of the first thermal insulation cotton 213, and the third thermal insulation cotton 125 is covered on the outer side of the other sides of the main body 12. This embodiment can further avoid heat exchange between the air in the refrigeration chamber 211 and the outside air by covering the outer side of the main body 12 and the side of the mounting cover 21 facing away from the ventilation hood 13 with thermal insulation cotton, thereby further improving the heat exchange efficiency between the evaporator 221 and the airflow flowing through the refrigeration chamber 211.

[0055] Furthermore, the steam oven also includes a heater 3, and the refrigeration cavity 211 is equipped with a heater 3, that is, the heater 3 used to heat the gallbladder cavity 11 in this embodiment, so as to realize the baking function, is also integrated in the refrigeration cavity 211. When the user needs to bake food, the circulating fan 23 can suck the air in the gallbladder cavity 11 into the refrigeration cavity 211 through the air inlet 1321. At this time, the refrigeration cavity 211 is used as a heating cavity, and the heater 3 can heat the airflow entering the refrigeration cavity 211 through the air inlet 1321, and the circulating fan 23 can also send the air in the refrigeration cavity 211 into the gallbladder cavity 11 through the air outlet, so as to realize the internal circulation of the air in the gallbladder cavity 11, and the circulating fan 23 sends the heated air into the gallbladder cavity 11 through the air outlet, so as to heat the gallbladder cavity 11 of the inner tank 1, thereby realizing the baking of the food in the inner tank 1. Since the heater 3 directly contacts the circulating air flow during the internal circulation of the air in the gallbladder cavity 11, thereby heating the air flow, the heat exchange efficiency between the heater 3 and the air flow is relatively high, thereby increasing the heating speed and further improving the user experience.

[0056] It is worth noting that during the operation of the evaporator 221, condensation will occur on the outer wall of the evaporator 221. After the refrigeration system 22 stops working, the temperature in the refrigeration chamber 211 will gradually rise. At this time, the ice on the outer wall of the evaporator 221 will melt to form water. In this embodiment, a water outlet 212 is provided at the bottom of the mounting cover 21, one end of the water outlet 212 is connected to the refrigeration chamber 211, and the other end of the water outlet 212 is connected to the outside world, so that the water formed on the outer wall of the evaporator 221 can be discharged in time, thereby avoiding affecting the subsequent operation of the cooling mechanism 2 and / or the heater 3.

[0057] In addition, in addition to the evaporator 221, the refrigeration system 22 also includes a condenser 222, which is arranged on the outside of the mounting cover 21 and is connected to the evaporator 221. In the present embodiment, the steam oven also includes an air duct 4, which is arranged on the outside of the inner tank 1. One end of the air duct 4 is connected to the outside, and the other end of the air duct 4 is connected to the air inlet 2221 of the condenser 222. An air path 41 is formed inside the air duct 4, and the outside air can flow along the air path 41 to the condenser 222, thereby enabling the condenser 222 to work normally.

[0058] Based on the above, in this embodiment, a panel 15 is installed on the inner tank 1, and a third air inlet hole 151 is provided on the panel 15. The third air inlet hole 151 is connected to the upstream end of the air duct 4, and the downstream end of the air duct 4 is connected to the air inlet 2221 of the condenser 222.

[0059] Furthermore, the opening 16 of the inner pot 1 is folded toward the outside of the inner pot 1 to form a flange 17. It can be understood that the opening 16 of the inner pot 1 is used for the user to put in or take out food. The panel 15 abuts against one side of the flange 17 along the opening direction of the opening 16, and is sleeved on the outer periphery of the inner pot 1. The outer periphery of the flange 17 is sleeved with an insulating silicone ring 18, and the insulating silicone ring 18 is pressed and confined between the panel 15 and the flange 17. On the one hand, the insulating silicone ring 18 plays a sealing role, and on the other hand, it can further reduce the heat exchange between the air in the refrigeration chamber 211 and the outside air.

[0060] In addition, in the present embodiment, a first temperature sensor 111 is provided in the bile cavity 11, and a second temperature sensor 2111 is provided in the refrigeration cavity 211. The first temperature sensor 111 is used to detect the temperature in the bile cavity 11, and the second temperature sensor 2111 is used to detect the temperature in the refrigeration cavity 211. The present embodiment detects the temperatures in the refrigeration cavity 211 and the bile cavity 11, and can control the refrigeration system 22 to start or stop working according to the detection results, so as to accurately control the temperature in the bile cavity 11 within the temperature range required for preservation, thereby improving the preservation effect, thereby further improving the user experience.

[0061] Based on the above, in this embodiment, the temperature control method of the inner pot 1 of the steam oven 1 includes:

[0062] The circulation fan 23 continues to work;

[0063] After receiving the fresh-keeping instruction from the user, the temperature detection module detects the temperature of the bile cavity 11 and the refrigeration cavity 211. After each first preset time, the controller collects the detection data T1 and T2 of the temperature detection module, where T1 is the temperature of the bile cavity 11 and T2 is the temperature of the refrigeration cavity 211;

[0064] If any one of T1 and T2 is greater than the first preset temperature, the steam oven sends a first warning signal;

[0065] If T1 and T2 are both less than or equal to the first preset temperature, the controller controls the refrigeration system 22 to start working;

[0066] During the period when T1 exceeds the preset target temperature, if T2 is less than or equal to the second preset temperature, the refrigeration system 22 stops working, and the circulation fan 23 continues to work; if T2 is greater than or equal to the third preset temperature, the refrigeration system 22 restarts working, wherein the third preset temperature is greater than the second preset temperature, and the time interval from stopping working to restarting working of the refrigeration system 22 needs to be greater than the second preset time;

[0067] When T1 decreases to the target temperature, the refrigeration system 22 stops working. If T1 rises back to a temperature greater than or equal to the fourth preset temperature, the refrigeration system 22 starts working again.

[0068] If the refrigeration system 22 continuously operates for more than the third preset time, the controller forces the refrigeration system 22 to shut down for a fourth preset time;

[0069] If the controller does not collect T1 and / or T2, or T1 and / or T2 exceeds the preset range, the steam oven sends a second warning signal, and the refrigeration system 22 works according to the preset mode;

[0070] In the preset mode, after the refrigeration system 22 works for a fifth preset time, it stops working for a sixth preset time and then starts working again.

[0071] It can be understood that the temperature detection module includes a first temperature sensor 111 and a second temperature sensor 2111. Both the first sensor and the second sensor can be selected as temperature control probes or thermocouple sensors, etc., and there is no specific limitation on this in the present embodiment.

[0072] The first preset time, second preset time, third preset time, fourth preset time, fifth preset time, sixth preset time, first preset temperature, second preset temperature, third preset temperature, fourth preset temperature, target temperature, preset value and preset range mentioned above can be set according to actual conditions, and this embodiment does not impose any specific restrictions on this.

[0073] Exemplarily, this embodiment is explained by taking the first preset time of 5 seconds, the second preset time of 5 minutes, the third preset time of 4 hours, the fourth preset time of 10 minutes, the fifth preset time of 30 minutes, the sixth preset time of 10 minutes, the first preset temperature of 43°C, the second preset temperature of -10°C, the third preset temperature of -5°C, the fourth preset temperature of 10°C, and the target temperature of 5°C as an example. In addition, the preset value is 5°C. When T1 is greater than 250°C or less than -15°C, it means that T1 exceeds the preset range, and the same is true for T2.

[0074] Specifically, in this embodiment, the circulating fan 23 works continuously, thereby continuously realizing the internal circulation of the air in the bile cavity 11, so as to facilitate the subsequent rapid cooling of the bile cavity 11. When the controller receives the fresh-keeping instruction issued by the user, the first temperature sensor 111 and the second temperature sensor 2111 start working at the same time. Every 5 seconds, the controller collects the detection data of the first temperature sensor 111 and the second temperature sensor 2111, wherein the detection data of the first temperature sensor 111 is T1, and the detection data of the second temperature sensor 2111 is T2. If T1 and / or T2 are greater than or equal to T1, the controller will collect the detection data of the first temperature sensor 111 and the second temperature sensor 2111. If the temperature of the steam oven 11 is greater than 43°C, it means that the temperature in the gallbladder cavity 11 and the refrigeration cavity 211 is too high. If the refrigeration system 22 starts working at this time, on the one hand, the high temperature will affect the service life of the evaporator 221. On the other hand, serious condensation will occur on the outer wall of the evaporator 221, which will cause a serious water accumulation problem in the refrigeration cavity 211 when the temperature rises later, thereby affecting the subsequent normal operation of the steam oven. Therefore, if T1 and / or T2 is greater than 43°C, the steam oven will send a first warning signal to remind the user to open the door of the steam oven, so as to naturally cool down the gallbladder cavity 11 and the refrigeration cavity 211. After the gallbladder cavity 11 and the refrigeration cavity 211 are naturally cooled to T1 and T2 are both less than or equal to 43°C, the controller controls the refrigeration system 22 to start working.

[0075] It can be understood that in this embodiment, the steam oven sends a first warning signal to the user by displaying "The temperature in the cavity is too high, please try again after cooling" on its display screen. Of course, in other optional embodiments, the steam oven may also send a first warning signal to the user by lighting an indicator light or voice broadcasting or other methods, and this is not specifically limited in this embodiment.

[0076] After the refrigeration system 22 starts working, during the period when T1 exceeds the target temperature by 5°C: if T2 is less than or equal to -10°C, the refrigeration system 22 stops working, while the circulating fan 23 continues to work and uses the temperature difference between T1 and T2 to continue to cool the gallbladder cavity 11, thereby achieving the purpose of energy saving and consumption reduction; if T2 is greater than or equal to -5°C, the refrigeration system 22 restarts working to ensure that T1 can be effectively reduced to the target temperature, wherein the time interval from stopping working to restarting working of the refrigeration system 22 must be greater than 5 minutes, so as to avoid affecting the service life of the refrigeration system 22 due to frequent start and stop.

[0077] When T1 drops to 5°C, the temperature in the gallbladder cavity 11 is within the temperature range required for freshness preservation, and the refrigeration system 22 stops working. After a period of time, the temperature in the gallbladder cavity 11 will rise again. If it rises to greater than or equal to 10°C, the refrigeration system 22 starts working again, thereby continuing to cool the gallbladder cavity 11 to avoid a reduction in the freshness preservation effect due to an excessive rise in the temperature in the gallbladder cavity 11. Afterwards, the controller continues to control the refrigeration system 22 to stop or start working in the manner described above.

[0078] If the refrigeration system 22 works continuously for more than 4 hours, the controller will force the refrigeration system 22 to shut down for 10 minutes to prevent the refrigeration system 22 from working for a long time and affecting its service life.

[0079] In addition, during the above working process, if the controller does not collect T1 and / or T2, or T1 and / or T2 exceed the preset range, it means that the first temperature sensor 111 and / or the second temperature sensor 2111 is damaged. At this time, the steam oven sends a second alarm signal to prompt the user to contact after-sales maintenance.

[0080] It can be understood that in this embodiment, the steam oven sends a second warning signal to the user by displaying "Temperature sensor abnormality, please contact after-sales maintenance" on its display screen. Of course, in other optional embodiments, the steam oven may also send a second warning signal to the user by lighting an indicator light or voice broadcasting or other methods, and this is not specifically limited in this embodiment.

[0081] If the steam oven sends out the second warning signal, the refrigeration system 22 will work according to the preset mode. In the preset mode, the refrigeration system 22 stops working for 10 minutes after working for every 30 minutes, and then starts working again, thereby ensuring that the steam oven can still keep food fresh.

[0082] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A steam oven, characterized in that: include: An inner liner (1) having a liner cavity (11) formed therein, wherein an air inlet (1321) and an air outlet are arranged on the liner wall of the inner liner (1); and A cooling mechanism (2) comprises a mounting cover (21), a refrigeration system (22) and a circulation fan (23); the mounting cover (21) is arranged on the outside of the inner tank (1) and surrounds the outer periphery of the air inlet (1321) and the air outlet; the mounting cover (21) and the inner tank (1) form a refrigeration cavity (211); the evaporator (221) of the refrigeration system (22) and the blades (231) of the circulation fan (23) are both mounted on the mounting cover (21) and are both located in the refrigeration cavity (211); the circulation fan (23) can cause the air in the tank cavity (11) to circulate between the tank cavity (11) and the refrigeration cavity (211) through the air inlet (1321) and the air outlet.

2. The steam oven according to claim 1, characterized in that: The steam oven further comprises a heater (3), and the heater (3) is installed in the refrigeration cavity (211).

3. The steam oven according to claim 1, characterized in that: A first temperature sensor (111) is arranged in the bile cavity (11), and a second temperature sensor (2111) is arranged in the refrigeration cavity (211).

4. The steam oven according to claim 1, characterized in that: The refrigeration system (22) comprises a condenser (222), wherein the condenser (222) is arranged on the outside of the mounting cover (21) and is connected to the evaporator (221); the steam oven further comprises an air duct (4), wherein the air duct (4) is arranged on the outside of the inner container (1), wherein one end of the air duct (4) is connected to the outside, and the other end of the air duct (4) is connected to the air inlet (2221) of the condenser (222).

5. The steam oven according to claim 1, characterized in that: A water outlet (212) is provided at the bottom of the installation cover (21), one end of the water outlet (212) is in communication with the refrigeration cavity (211), and the other end of the water outlet (212) is in communication with the outside.

6. The steam oven according to claim 1, characterized in that: The circulating fan (23) comprises a plurality of blades (231), wherein the plurality of blades (231) are evenly arranged around the axis of the mounting cover (21); a sink is formed on the wall of the inner tank, the sink is convexly arranged toward the inner side of the inner tank (1) and is coaxially arranged with the mounting cover (21); the mounting cover (21) and the sink form the refrigeration chamber (211); the sink comprises a first plate portion (131) and a second plate portion (132); the axis of the first plate portion (131) is aligned with the axis of the mounting cover (21); The axis of the mounting cover (21) coincides, and the diameter of the cross section of the first plate portion (131) gradually decreases from a side close to the mounting cover (21) to a side away from the mounting cover (21); the second plate portion (132) is formed on a side of the first plate portion (131) away from the mounting cover (21) and is directly opposite to the circulation fan (23); the air outlet is arranged on the first plate portion (131), and the air inlet (1321) is arranged on the second plate portion (132).

7. The steam oven according to claim 6, characterized in that: The inner container (1) comprises a body (12) and a ventilation cover (13); the body (12) is provided with a through hole (121); the ventilation cover (13) is arranged on the outer periphery of the through hole (121) and is located on the inner side of the body (12); the mounting cover (21) is arranged on the outer periphery of the through hole (121) and is located on the outer side of the body (12); the ventilation cover (13) forms the sink; The main body (12) is provided with a mounting groove (122), and the mounting groove (122) surrounds the outer periphery of the through hole (121). The sinking platform also includes a third plate portion (133), and the third plate portion (133) is located on a side of the first plate portion (131) away from the second plate portion (132). The third plate portion (133) sinks into the mounting groove (122), and the third plate portion (133) is in contact with the groove wall of the mounting groove (122) along the radial direction of the second plate portion (132) away from the axis of the mounting cover (21).

8. The steam oven according to claim 7, characterized in that: The outer side of the body (12) and the side of the installation cover (21) facing away from the ventilation cover (13) are both covered with thermal insulation cotton.

9. The steam oven according to claim 1, characterized in that: A boss (123) is protrudingly provided on the outer side of the gallbladder wall, and the mounting cover (21) is buckled on the outer periphery of the boss (123).

10. The steam oven according to claim 9, characterized in that: A first heat-insulating silica gel pad (14) is pressed and defined between the boss (123) and the mounting cover (21).

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