A multi-functional steam oven and integrated stove

Abstract

This utility model relates to a multifunctional steam oven and integrated stove, including an inner liner with an air inlet and an air outlet, both of which are openable and closable. A first distance is provided between the two to prevent mixing of the airflow from the air inlet and the airflow from the air outlet. The oven also includes a first air duct outside the inner liner and a first heat exchanger disposed within the first air duct. The air outlet end of the first air duct is fluidly connected to the air inlet, and the air inlet end is fluidly connected to the air outlet. The first heat exchanger has at least two states: in a first state, it absorbs heat from inside the first air duct; in a second state, it releases heat into the first air duct. Compared with existing technologies, this utility model can achieve a variety of other functions in addition to basic cooking functions.

Description

Technical Field

[0001] This utility model relates to the field of cooking devices, and in particular to a multi-functional steam oven and integrated stove. Background Technology

[0002] Steam ovens generally only have cooking functions, such as Chinese invention patents with application number CN202510050790.2 (publication number CN119791465A) and application number CN202411422871.2 (publication number CN119111988A). However, existing cooking devices still have the following problems: (1) The internal temperature of the inner pot is too high after cooking, and opening the door directly poses a risk of scalding the user; (2) The internal temperature of the inner pot is low at the beginning of cooking, and it takes a long time to preheat the inner pot, thus affecting the cooking efficiency; (3) If the cooked food is left in the inner pot for a long time, it will cool down and affect the cooking quality.

[0003] Furthermore, modern kitchens typically store food in refrigerators or freezers, then remove the ingredients and place them in the inner pot before cooking, which is relatively cumbersome. Additionally, cooking frozen food requires thawing it before placing it in the inner pot, which is also inconvenient. Therefore, the functionality of existing steam ovens needs further improvement.

[0004] Furthermore, an integrated cooktop is an integrated appliance that combines a cooktop (such as a gas stove) with a cooking device, as exemplified by Chinese invention patent CN202510217054.1 (publication number CN119914912A). Integrated cooktops not only integrate multiple cooking functions but also facilitate the full utilization of kitchen space, thus gaining increasing popularity among users in recent years. Summary of the Invention

[0005] The first technical problem this invention aims to solve is to provide a multi-functional steam oven that can prevent the internal temperature of the inner cavity from becoming too high after cooking, in contrast to existing technologies.

[0006] The second technical problem to be solved by this utility model is to provide a multi-functional steam oven with a food preservation function, which is in contrast to the prior art.

[0007] The third technical problem to be solved by this utility model is to provide a multi-functional steam oven with an inner cavity preheating function, which is in contrast to the prior art.

[0008] The fourth technical problem to be solved by this utility model is to provide a multi-functional steam oven with defrosting function, which is in contrast to the prior art.

[0009] The fifth technical problem to be solved by this utility model is to provide a multi-functional steam oven with heat preservation function, which is in contrast to the prior art.

[0010] The sixth technical problem to be solved by this utility model is to provide an integrated stove with the above-mentioned multifunctional steam oven, which is in contrast to the prior art.

[0011] The technical solution adopted by this utility model to solve at least one of the above-mentioned technical problems is as follows: a multi-functional steam oven, including an inner cavity, characterized in that the inner cavity has an air inlet and an air outlet, both of which can be opened and closed, and there is a first distance between them to prevent the airflow from the air inlet from mixing with the airflow from the air outlet.

[0012] It also includes a first air duct located outside the inner liner and a first heat exchanger installed in the first air duct, wherein the air outlet of the first air duct is in fluid communication with the air inlet, and the air inlet is in fluid communication with the air outlet.

[0013] Furthermore, the aforementioned first heat exchanger has at least two states: in the first state, the first heat exchanger can absorb heat from the inside of the first air duct; in the second state, the first heat exchanger can release heat into the inside of the first air duct.

[0014] Furthermore, it also includes a circulating fan, whose circulating impeller is mounted on the inner surface of the first side wall of the inner liner and is a double-sided impeller. The air inlet is located on the first side wall of the inner liner and faces the circulating impeller, while the air outlet is offset from the circulating impeller. When both the air inlet and outlet are open and the circulating fan is operating, a negative pressure is created at the air inlet, accelerating the airflow in the first air duct into the inner liner. This allows the first heat exchanger, in its first state, to accelerate the cooling rate inside the inner liner, and the second heat exchanger, in its second state, to accelerate the heating rate inside the inner liner.

[0015] Furthermore, the air inlet and air outlet are respectively located on the side walls of different sides of the inner liner. This better prevents the airflow from the air inlet from mixing with the airflow from the air outlet.

[0016] Furthermore, the top wall of the inner liner is provided with an openable and closable exhaust port, while the height of the air inlet is higher than that of the air outlet. Thus, when cooking is finished, the exhaust port is open, both the air inlet and outlet are open, and the first heat exchanger is in its first state. The cold air entering the inner liner through the air inlet tends to sink, guiding some of the hot air from top to bottom to the air outlet, and some of the hot air from bottom to top to the exhaust port. By venting the existing hot air in the inner liner and guiding it into the first air duct, the cooling rate of the inner liner is accelerated. When heating is required inside the inner liner (for preheating before cooking, thawing frozen food, or keeping cooked food warm), the exhaust port is closed, both the air inlet and outlet are open, and the first heat exchanger is in its second state. The hot air entering the inner liner through the air inlet tends to rise, thereby disturbing the existing cold air inside the inner liner and drawing it into the first air duct, accelerating the heating rate of the inner liner.

[0017] Furthermore, a first fan for cooling the first heat exchanger is also provided in the first air duct, and the airflow direction of the first fan is consistent with the airflow direction in the first air duct. By configuring the first fan, cooling of the first heat exchanger can be achieved on the one hand, and the airflow speed in the first air duct can be accelerated on the other hand, thereby improving the cooling or heating efficiency of the inner tank.

[0018] Furthermore, it also includes a heat exchange system comprising a compressor, a reversing valve, a second heat exchanger, and a throttling valve. The reversing valve has a first port, a second port, a third port, and a fourth port. The first port is fluidly connected to the compressor's outlet; the second port is fluidly connected to the second interface of the second heat exchanger; the third port is fluidly connected to the compressor's suction port; and the fourth port is fluidly connected to the first interface of the first heat exchanger. The third interface of the first heat exchanger is fluidly connected to one end of the throttling valve, and the other end of the throttling valve is fluidly connected to the fourth interface of the second heat exchanger.

[0019] Furthermore, in the first state described above, the refrigerant flows out of the compressor outlet, sequentially through the reversing valve, the second heat exchanger, and the expansion valve into the first heat exchanger, and then sequentially flows back to the compressor in the reverse direction. In the second state described above, the reversing valve is reversed, and the refrigerant flows out of the compressor outlet, sequentially through the reversing valve, the first heat exchanger, and the expansion valve into the second heat exchanger, and then sequentially flows back to the compressor in the reverse direction. Thus, in the first state, the first heat exchanger exchanges heat with the airflow in the first air duct, causing the temperature inside the first air duct to decrease, thereby cooling the interior of the inner liner. In the second state, the first heat exchanger exchanges heat with the airflow in the first air duct, causing the temperature inside the first air duct to increase, thereby heating the interior of the inner liner.

[0020] Furthermore, the heat exchange system is located below the inner cavity. This allows for full utilization of the internal installation space of the multi-functional steam oven, achieving a rational layout of the internal space.

[0021] Furthermore, the outer surface of the inner pot is covered with a layer of insulating cotton. On the one hand, this can prevent the high temperature inside the inner pot from being transferred outward during cooking, thus affecting cooking efficiency, and also prevent the high temperature from affecting the performance and lifespan of the internal electronic components; on the other hand, it can improve the cooling effect of the inner pot when it is cooling down, and improve the heating effect of the inner pot when it is heating up.

[0022] Furthermore, the inner pot is equipped with at least one of the following: a temperature sensor for detecting the internal temperature of the inner pot, a humidity sensor for detecting the internal humidity of the inner pot, or an image sensor for detecting the shape of food placed inside the inner pot. This allows for monitoring of the internal state of the inner pot, improving cooking efficiency or food preservation.

[0023] The technical solution adopted to further solve the sixth technical problem mentioned above is: an integrated stove, including the multi-functional steam oven as described above.

[0024] Compared with the prior art, the advantages of this utility model are as follows: A first air duct is provided outside the inner cavity, so that the gas in the inner cavity enters the first air duct through the air outlet, and then flows back into the inner cavity through the air inlet, realizing airflow circulation between the first air duct and the interior of the inner cavity. Furthermore, a first heat exchanger is provided in the first air duct, which can absorb heat from the interior of the first air duct in a first state and release heat to the first air duct in a second state. Therefore, the multi-functional steam oven of this utility model can achieve the following working modes:

[0025] In the first working mode, both the air inlet and outlet are closed, and the multi-functional steam oven performs ordinary cooking functions (such as steaming, baking, or steam-baking).

[0026] In the second operating mode, both the air inlet and outlet are open, and the first heat exchanger operates in the first state. At this time, the internal temperature of the inner liner decreases, which can be used for food preservation or cooling after cooking. Furthermore, when it is necessary to cook the food preserved in the inner liner, simply switch the operating mode from the second to the first mode; operation is convenient.

[0027] In the third working mode, both the air inlet and outlet are open, the first heat exchanger is working and in the second state. At this time, the internal temperature of the inner pot rises, which can be used to preheat the inner pot before cooking, to defrost frozen food, or to keep food warm after cooking.

[0028] As can be seen from the above, the multifunctional steam oven of this utility model has a variety of other functions in addition to the cooking function. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the multifunctional steam oven in this embodiment of the present invention. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] An integrated cooktop includes a cooktop (not shown) and a multi-functional steam oven disposed below the cooktop. Figure 1 As shown, the multi-functional steam oven includes a housing 100 and an inner liner 1 disposed in the housing 100. The inner liner 1 has an air inlet 11 and an air outlet 12, both of which can be opened and closed, and there is a first distance between them to prevent the airflow from the air inlet 11 from mixing with the airflow from the air outlet 12.

[0033] Furthermore, it also includes a first air duct 2 located outside the inner liner 1 and a first heat exchanger 3 disposed within the first air duct 2, wherein the air outlet of the first air duct 2 is in fluid communication with the air inlet 11, and the air inlet is in fluid communication with the air outlet 12. Moreover, the first heat exchanger 3 has at least two states: in the first state, the first heat exchanger 3 can absorb heat from the interior of the first air duct 2; in the second state, the first heat exchanger 3 can release heat into the interior of the first air duct 2.

[0034] As can be seen from the above, a first air duct 2 is provided outside the inner liner 1 in this utility model. Thus, the gas in the inner liner 1 enters the first air duct 2 through the air outlet 12, and then flows back into the inner liner 1 through the air inlet 11, realizing airflow circulation between the first air duct 2 and the interior of the inner liner 1. Furthermore, a first heat exchanger 3 is provided in the first air duct 2. In its first state, the first heat exchanger 3 can absorb heat from inside the first air duct 2, and in its second state, it can release heat to the first air duct 2. Therefore, the multi-functional steam oven of this utility model can achieve the following working modes:

[0035] In the first working mode, both the air inlet 11 and the air outlet 12 are closed, and the multi-functional steam oven realizes ordinary cooking functions (such as steaming, baking, or steam-baking functions, etc.).

[0036] In the second operating mode, both the air inlet 11 and the air outlet 12 are open, and the first heat exchanger 3 operates in the first state. At this time, the internal temperature of the inner liner 1 decreases, which can be used for food preservation or cooling of the inner liner 1 after cooking. Furthermore, when it is necessary to cook the food preserved in the inner liner 1, simply switch the operating mode from the second operating mode to the first operating mode, making operation convenient.

[0037] In the third working mode, both the air inlet 11 and the air outlet 12 are open, the first heat exchanger 3 is working and in the second state. At this time, the internal temperature of the inner pot 1 rises, which can be used to preheat the inner pot 1 before cooking, to thaw frozen food, or to keep food warm after cooking.

[0038] As can be seen from the above, the multifunctional steam oven of this utility model has a variety of other functions in addition to the cooking function.

[0039] In this embodiment, an air inlet valve 111 is provided on the air inlet 11 to control the opening and closing of the air inlet 11. At the same time, an air outlet valve 121 is provided on the air outlet 12 to control the opening and closing of the air outlet 12.

[0040] Furthermore, it also includes a circulating fan (not shown), whose circulating impeller is mounted on the inner surface of the first sidewall of the inner liner 1 and is a double-sided impeller. The air inlet 11 is opened on the first sidewall of the inner liner 1 and is opposite to the circulating impeller, while the air outlet 12 is offset from the circulating impeller. When both the air inlet 11 and the air outlet 12 are open and the circulating fan is operating, a negative pressure is formed at the air inlet 11, accelerating the airflow in the first air duct 2 into the inner liner 1. This accelerates the cooling rate inside the inner liner 1 when the first heat exchanger 3 is in the first state, and accelerates the heating rate inside the inner liner 1 when the second heat exchanger 6 is in the second state. In this embodiment, the first sidewall is specifically the rear sidewall of the inner liner 1, and the circulating impeller is vertically mounted on the inner surface of the rear sidewall in the left-right direction.

[0041] Preferably, the air inlet 11 and air outlet 12 are respectively located on the side walls of different sides of the inner liner 1, thereby better preventing the airflow from the air inlet 11 from mixing with the airflow from the air outlet 12. Specifically, in this embodiment, the air inlet 11 is located on the rear side wall of the inner liner 1, while the air outlet 12 is located on the right side wall of the inner liner 1. Furthermore, an openable and closable exhaust port 13 is provided on the top wall of the inner liner 1, and the opening height of the air inlet 11 is higher than that of the air outlet 12. When cooking is finished, the exhaust port 13 is open, both the air inlet 11 and the air outlet 12 are open, and the first heat exchanger 3 is in the first state. The cold air entering the inner liner 1 through the air inlet 11 has a downward tendency, guiding some of the hot air from top to bottom to the air outlet 12, and guiding some of the hot air from bottom to top to the exhaust port 13. By exhausting the original hot air in the inner liner 1 and introducing it into the first air duct 2, the cooling speed inside the inner liner 1 is accelerated. When the inner liner 1 needs to be heated (for preheating the inner liner 1 before cooking, thawing frozen food, or keeping cooked food warm), the exhaust port 13 is closed, the air inlet 11 and the air outlet 12 are both open, and the first heat exchanger 3 is in the second state. The hot air entering the inner liner 1 through the air inlet 11 has an upward trend, which disturbs the original cold air inside the inner liner 1. The air outlet 12 enters the first air duct 2, accelerating the heating rate inside the inner liner 1.

[0042] Furthermore, the first air duct 2 is also equipped with a first fan 33 for dissipating heat from the first heat exchanger 3, and the airflow direction of the first fan 33 is consistent with the airflow direction in the first air duct 2. By configuring the first fan 33, heat dissipation of the first heat exchanger 3 can be achieved on the one hand, and the airflow speed in the first air duct 2 can be accelerated on the other hand, thereby improving the cooling efficiency or heating efficiency of the inner liner 1.

[0043] Furthermore, it also includes a heat exchange system comprising a compressor 4, a reversing valve 5, a second heat exchanger 6, and a throttling valve 7. The reversing valve 5 has a first valve port 51, a second valve port 52, a third valve port 53, and a fourth valve port 54. Specifically, the first valve port 51 is fluidly connected to the outlet 41 of the compressor 4; the second valve port 52 is fluidly connected to the second interface 61 of the second heat exchanger 6; the third valve port 53 is fluidly connected to the suction port 42 of the compressor 4; and the fourth valve port 54 is fluidly connected to the first interface 31 of the first heat exchanger 6. The third interface 32 of the first heat exchanger 6 is fluidly connected to one end of the throttling valve 7, and the other end of the throttling valve 7 is fluidly connected to the fourth interface 62 of the second heat exchanger 6.

[0044] Furthermore, in the first state described above, the refrigerant flows out of the outlet 41 of the compressor 4, sequentially through the reversing valve 5, the second heat exchanger 6, and the throttle valve 7 into the first heat exchanger 3, and then sequentially flows back into the compressor 4 in the reverse direction. In the second state described above, the reversing valve 5 reverses, and the refrigerant flows out of the outlet 41 of the compressor 4, sequentially through the reversing valve 5, the first heat exchanger 3, and the throttle valve 7 into the second heat exchanger 6, and then sequentially flows back into the compressor 4 in the reverse direction. Thus, in the first state, the first heat exchanger 3 exchanges heat with the airflow in the first air duct 2, thereby lowering the internal temperature of the first air duct 2 and thus cooling the interior of the inner liner 1. In the second state, the first heat exchanger 3 exchanges heat with the airflow in the first air duct 2, thereby raising the internal temperature of the first air duct 2 and thus raising the internal temperature of the inner liner 1. In this embodiment, the first heat exchanger 3 is specifically an evaporator, and the second heat exchanger 6 is specifically a condenser. Furthermore, a second fan 63 for heat dissipation is provided on one side of the condenser.

[0045] In this embodiment, preferably, the heat exchange system is located below the inner liner 1. This allows for full utilization of the internal installation space of the multi-functional steam oven, achieving a reasonable layout of the internal space. Furthermore, the outer surface of the inner liner 1 is covered with an insulation layer (not shown). This prevents the high internal temperature of the inner liner 1 from transferring outwards during cooking, thus avoiding impact on cooking efficiency, and also prevents high temperatures from affecting the performance and lifespan of internal electronic components. On the other hand, it enhances the cooling effect of the inner liner 1 when it is cooling down, and enhances the heating effect when it is heating up.

[0046] In addition, in this embodiment, a temperature sensor 8, a humidity sensor 9, and an image sensor 10 are respectively installed in the inner pot 1. The temperature sensor 8 is used to detect the internal temperature of the inner pot 1, the humidity sensor 9 is used to detect the internal humidity of the inner pot 1, and the image sensor 10 detects the shape of the food in the inner pot 1. This allows for monitoring of the internal state of the inner pot 1, improving the cooking efficiency of food or the preservation effect of ingredients.

[0047] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A multifunction steam oven comprising an inner container (1), characterized in that, The inner liner (1) has an air inlet (11) and an air outlet (12), both of which can be opened and closed, and there is a first distance between them to prevent the airflow from the air inlet (11) from mixing with the airflow from the air outlet (12). It also includes a first air duct (2) located outside the inner liner (1) and a first heat exchanger (3) located in the first air duct (2), wherein the air outlet of the first air duct (2) is in fluid communication with the air inlet (11), and the air inlet is in fluid communication with the air outlet (12). Furthermore, the first heat exchanger (3) has at least two states: in the first state, the first heat exchanger (3) can absorb heat from the inside of the first air duct (2); in the second state, the first heat exchanger (3) can release heat into the inside of the first air duct (2).

2. The multi-functional steam oven according to claim 1, wherein It also includes a circulating fan, the circulating impeller of which is installed on the inner surface of the first side wall of the inner liner (1) and is a double-sided impeller. The air inlet (11) is opened on the first side wall of the inner liner (1) and is opposite to the circulating impeller, while the air outlet (12) is offset from the circulating impeller.

3. The multifunction steam oven according to claim 1 or 2, characterized by, The air inlet (11) and air outlet (12) are respectively located on the side walls of the inner liner (1).

4. The multifunction steam oven according to claim 1 or 2, characterized by, The inner liner (1) has an openable and closable exhaust port (13) on its top wall, and the opening height of the air inlet (11) is higher than that of the air outlet (12).

5. The multifunction steam oven according to claim 1 or 2, wherein The first air duct (2) is also provided with a first fan (33) for dissipating heat from the first heat exchanger (3), and the airflow direction of the first fan (33) is consistent with the airflow direction in the first air duct (2).

6. The multifunction steam oven according to claim 1 or 2, characterized by, It also includes a heat exchange system comprising a compressor (4), a reversing valve (5), a second heat exchanger (6), and a throttle valve (7). The reversing valve (5) has a first valve port (51), a second valve port (52), a third valve port (53), and a fourth valve port (54). The first valve port (51) is fluidly connected to the outlet (41) of the compressor (4), the second valve port (52) is fluidly connected to the second interface (61) of the second heat exchanger (6), the third valve port (53) is fluidly connected to the suction port (42) of the compressor (4), and the fourth valve port (54) is fluidly connected to the first interface (31) of the first heat exchanger (3). The third interface (32) of the first heat exchanger (3) is fluidly connected to one end of the throttle valve (7), and the other end of the throttle valve (7) is fluidly connected to the fourth interface (62) of the second heat exchanger (6). Furthermore, in the first state described above, the refrigerant flows out from the outlet (41) of the compressor (4) and flows into the first heat exchanger (3) in sequence through the reversing valve (5), the second heat exchanger (6), and the throttle valve (7), and then flows back to the compressor (4) in reverse order; in the second state described above, the reversing valve (5) is reversed, and the refrigerant flows out from the outlet (41) of the compressor (4) and flows into the second heat exchanger (6) in sequence through the reversing valve (5), the first heat exchanger (3), and the throttle valve (7), and then flows back to the compressor (4) in reverse order.

7. The multi-functional steam oven according to claim 6, wherein The heat exchange system is located below the inner liner (1).

8. The multifunction steam oven according to claim 1 or 2, characterized by, The outer surface of the inner liner (1) is covered with a layer of heat-insulating cotton.

9. The multifunction steam oven according to claim 1 or 2, wherein The inner liner (1) is equipped with at least one of the following: a temperature sensor (8) for detecting the internal temperature of the inner liner (1), a humidity sensor (9) for detecting the internal humidity of the inner liner (1), or an image sensor (10) for detecting the shape of food placed in the inner liner (1).

10. An integrated hob, characterized in that Including the multi-functional steam oven as described in any one of claims 1 to 9.

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