Ventilation device for household cooking appliance and household cooking appliance

Abstract

The embodiment of the invention provides a ventilation device for a household cooking utensil, and the ventilation device comprises a channel assembly which is provided with a ventilation inlet and a ventilation outlet, the ventilation inlet is communicated with a cooking space of the household cooking utensil, and the ventilation outlet is communicated with the cooking space of the household cooking utensil. The ventilation outlet is communicated with the surrounding environment of the household cooking utensil; the fan is arranged to be used for driving gas in a cooking space of the household cooking utensil to flow through the channel assembly; and a sensor receiving device in which a sensor is arranged, the sensor receiving device forming a branch between the ventilation inlet and the ventilation outlet, the sensor receiving device being switchable between a first state, in which the sensor receiving device is electrically connected to the ventilation inlet, and a second state, in which the sensor receiving device is electrically connected to the ventilation inlet. In the first state, the sensor is kept isolated from the gas in the cooking space, and in the second state, the gas in the cooking space is allowed to flow through the sensor under the action of the fan.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a ventilation device for a household cooking appliance and a household cooking appliance. Background Art

[0002] In the ovens, steamers or steam ovens in the prior art, due to the high temperature and / or humidity during baking, grilling, steaming, etc., gas sensors, such as volatile organic compound sensors, which can be used to control the cooking process, are usually not placed inside the cavity of the oven or steam oven. Therefore, the placement and protection of such sensors are particularly important. The current ovens, steamers or steam ovens lack a sensor placement system that can be protected from the harsh environmental conditions in the cooking space, so as to accurately collect the required data. Summary of the invention

[0003] An object of the embodiments of the present application is to provide an improved ventilation device for a household cooking appliance and a household cooking appliance having a corresponding ventilation device, so as to at least partially improve or solve the defects in the prior art.

[0004] According to a first aspect of the present application, an embodiment of the present application provides a ventilation device for a household cooking appliance, wherein the ventilation device comprises:

[0005] a channel assembly having a ventilation inlet and a ventilation outlet, wherein the ventilation inlet is in communication with a cooking space of the household cooking appliance, and the ventilation outlet is in communication with an environment surrounding the household cooking appliance;

[0006] a fan configured to drive the gas in the cooking space of the household cooking appliance to flow through the channel assembly; and

[0007] a sensor receiving device in which a sensor is arranged, the sensor receiving device forming a branch between the ventilation inlet and the ventilation outlet,

[0008] The sensor receiving device is switchable between a first state and a second state.

[0009] In the first state, the sensor is kept isolated from the gas in the cooking space,

[0010] In the second state, the gas in the cooking space is allowed to flow through the sensor under the action of the fan.

[0011] The present application mainly includes the following technical concepts: a sensor with a protective housing is arranged in a ventilation channel assembly, so that the gas in the cooking space can selectively flow through the sensor or be isolated from the sensor. Thus, when the intelligent cooking process needs to be realized with the help of the signal detected by the sensor, such as information about the gas components generated by food in the gas, the passage in the sensor receiving device is opened. When the sensor is not needed for detection and / or the gas in the cooking space may cause damage to the sensor (for example, due to high temperature and high humidity in the cleaning process, etc.), the sensor is isolated from the gas.

[0012] According to an optional embodiment of the present application, the channel assembly is configured with a first ventilation channel and a second ventilation channel.

[0013] The first ventilation channel is connected to the suction side of the fan on one hand, and is connected to the cooking space via the ventilation inlet on the other hand.

[0014] The second ventilation passage is connected to the exhaust side of the fan on one hand, and communicates with the surrounding environment via the ventilation outlet on the other hand.

[0015] According to an optional embodiment of the present application, the sensor accommodating device includes a protective shell and a movable baffle, and the sensor is arranged in the internal space of the protective shell.

[0016] The protective housing is configured with a housing inlet communicating with the first ventilation channel and a housing outlet communicating with the suction side of the fan.

[0017] The movable baffle closes the housing inlet at a first position in the first state and releases the housing inlet at a second position in the second state.

[0018] According to an optional embodiment of the present application, the sensor accommodating device includes a driving device, and the driving device is configured to drive the movable baffle to move between the first position and the second position.

[0019] According to an optional embodiment of the present application, the driving device is configured as a crank slider mechanism driven by a motor.

[0020] According to an optional embodiment of the present application, the channel assembly includes a first shell element, a second shell element, and a spacing element arranged between the first shell element and the second shell element.

[0021] wherein the first ventilation channel is formed between the first shell element and the spacer element, and

[0022] The second ventilation channel is formed between the second shell element and the spacing element.

[0023] According to an optional embodiment of the present application, the ventilation inlet is configured on the first shell element.

[0024] According to an optional embodiment of the present application, the first shell element constitutes at least one of the boundary surfaces defining the cooking space.

[0025] According to an optional embodiment of the present application, the sensor includes a sensor for detecting gas components, in particular, a volatile organic compound sensor.

[0026] According to a first aspect of the present application, an embodiment of the present application provides a domestic cooking appliance, wherein the domestic cooking appliance has a ventilation device according to the first aspect of the present application.

[0027] According to an optional embodiment of the present application, the domestic cooking appliance has a control unit, which is configured to control the cooking process according to a sensor signal of a sensor in the sensor receiving device of the ventilation device.

[0028] Through certain embodiments of the present application, the following technical advantages can be achieved: protecting the sensors required for cooking from the harsh conditions in the cooking space, simply switching to the working state of the sensors to achieve intelligent automated cooking, and providing a simple and compact layout while achieving the above functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present application will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present application can be better understood. The accompanying drawings include:

[0030] Figure 1 A household cooking appliance according to the present application is shown in a perspective view.

[0031] Figure 2 , a domestic cooking appliance according to the present application is shown with the top cut away.

[0032] Figure 3 , a household cooking appliance according to the present application is shown with the door removed.

[0033] Figure 4 The ventilation device according to the present application is shown separately in a three-dimensional view.

[0034] Figure 5 The ventilation device according to the present application is shown in a cross-sectional view.

[0035] Figure 6 The sensor receiving device of the ventilation device according to the present application is shown separately in FIG.

[0036] Figure 7The sensor receiving device is shown in a cutaway manner in the closed state.

[0037] Figure 8 The sensor receiving device is shown in a cutaway manner in the open state.

[0038] Fig. 9 FIG. 2 schematically shows a gas flow path of the ventilation device according to the present application when the movable baffle is closed.

[0039] Fig.10 Schematically shows the gas flow path of the ventilation device according to the present application when the movable baffle is opened.

[0040] Fig.11 A simplified circuit diagram of the gas flow circuit of the ventilation device 10 is shown in FIG.

[0041] Fig.12 Schematic diagram of a system block diagram of a household cooking appliance 1 according to the present application is shown in FIG.

[0042] Reference numerals list

[0043] 1 household cooking appliance, 10 ventilation device, 100 sensor accommodating device, 110 sensor, 120 protective shell, 121 shell inlet, 122 shell outlet, 130 movable baffle, 140 driving device, 141 motor, 142 motor turntable, 143 connecting rod, 144 slide, 200 channel assembly, 210 first ventilation channel, 211 ventilation inlet, 220 second ventilation channel, 221 ventilation outlet, 230 first shell element, 240 second shell element, 250 spacing element, 300 fan, 20 cooking space, 30 control unit, 40 door body. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the scope of protection of the present application.

[0045] First, for ease of understanding, returning to the description in the background technology section, the ovens, steamers or steam ovens in the prior art lack a sensor placement system that can be protected from the harsh cooking environment in the cavity and thus accurately collect data.

[0046] In response to at least one of the above-mentioned technical problems or other possible technical problems, an exemplary embodiment of the present application provides a ventilation device for a household cooking appliance, wherein the ventilation device includes: a channel assembly, the channel assembly having a ventilation inlet and a ventilation outlet, wherein the ventilation inlet is connected to a cooking space of the household cooking appliance, and the ventilation outlet is connected to the surrounding environment of the household cooking appliance; a fan, the fan is configured to drive the gas in the cooking space of the household cooking appliance to flow through the channel assembly; and a sensor accommodating device arranged with a sensor, the sensor accommodating device constituting a branch between the ventilation inlet and the ventilation outlet, wherein the sensor accommodating device is capable of switching between a first state and a second state, in which, in the first state, the sensor is kept isolated from the gas in the cooking space, and in the second state, the gas in the cooking space is allowed to flow through the sensor under the action of the fan.

[0047] In order to better understand the present application, exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0048] exist Figure 1 A household cooking appliance 1 according to the present application is shown in a perspective view. Figure 2 , a household cooking appliance 1 according to the present application is shown with the top cut away, wherein the ventilation device 10 according to the present application can be seen. Here, the household cooking appliance 1 has a door body 40, and a cooking space 20 is formed by the closed door body 40 and the inner cavity of the household cooking appliance 1. Figure 3 4 shows a household cooking appliance 1 according to the present application with the door 40 removed, wherein the cooking space 20 thereof can be seen. Figure 2 As shown in the figure, the ventilation device 10 is arranged on the top of the domestic cooking appliance 1, but alternatively, it is also conceivable to arrange the ventilation device 10 at other positions of the domestic cooking appliance 1, preferably adjacent to the cooking space 20. Here, the domestic cooking appliance 1 can be a steam oven, a steam box or an oven, or other box-type appliances for cooking, such as steaming and / or baking food. Optionally, the domestic cooking appliance 1 is configured to bake and / or steam food placed in its cooking space 20.

[0049] exist Figure 4 The ventilation device 10 according to the present application is shown separately in a three-dimensional view. Figure 5 The ventilation device 10 according to the present application is shown in a cross-sectional view. Here, the ventilation device 10 is configured to discharge the gas in the cooking space 20 to the surrounding environment. Figure 4 and Figure 5As shown in , the ventilation device 10 includes a channel assembly 200, and the channel assembly 200 includes a first shell element 230 (here, a lower shell), a second shell element 240 (here, an upper shell), and a spacing element 250 (a partition plate) arranged therebetween. Thus, a first ventilation channel 210 is formed between the first shell element 230 and the spacing element 250, and a second ventilation channel 220 is formed between the second shell element 240 and the spacing element 250, that is, a double-layer channel structure with upper and lower air ducts is formed, for example, the first ventilation channel 210 is the lower air duct and the second ventilation channel 220 is the upper air duct. Here, the first ventilation channel 210 is connected to the cooking space 20 of the household cooking appliance 1, and the second ventilation channel 220 is connected to the surrounding environment of the household cooking appliance 1, thereby forming a passage between the cooking space 20 and the surrounding environment for ventilating the cooking space 20. According to the present application, the ventilation device 10 comprises a fan 300, in particular a centrifugal fan, which is arranged in series between the first ventilation channel 210 and the second ventilation channel 220 in terms of fluid technology (see Fig.11 Here, the suction side of the fan 300 is connected to the first ventilation channel 210, and the exhaust side of the fan 300 is connected to the second ventilation channel 220. Therefore, under the action of the fan 300, the gas in the cooking space 20 can be caused to flow to the fan 300 through the first ventilation channel 210, and then discharged to the surrounding environment through the second ventilation channel 220.

[0050] According to an optional embodiment, a ventilation inlet 211 is configured on the first shell element 230, and the ventilation inlet 211 is connected to the cooking space 20 of the household cooking appliance 1. Preferably, the first shell element 230 constitutes at least one of the boundary surfaces defining the cooking space 20, which is exemplarily the top plate of the cavity of the household cooking appliance 1, and the ventilation inlet 211 is configured on the top plate (see Figure 3 ). Thus, a simple and compact arrangement of the ventilation device 10 or the household cooking appliance 1 is achieved. Alternatively, it is also conceivable that the first shell element 230 constitutes any boundary surface of the cooking space 20, such as the left side wall, right side wall, rear side wall or bottom plate of the cavity, and / or one or more ventilation inlets 211 are constructed on any boundary surface of the cooking space 20. According to an optional embodiment, the ventilation outlet 221 is formed at the edge of the second shell element 240 and the spacer element 250 (see Figure 5 ), the ventilation outlet 221 is in communication with the surrounding environment of the household cooking appliance 1, and is used to discharge the gas flowing out through the channel assembly 200. Here, the ventilation outlet 221 is, for example, arranged on a side facing the door body 40. However, alternatively, it is also conceivable that one or more ventilation outlets 221 are arranged at any position where the household cooking appliance 1 is adjacent to the surrounding environment.

[0051] According to the present application, the ventilation device 10 further comprises a sensor receiving device 100, in which a sensor 110 is arranged (see Figure 7 and Figure 8 ), preferably a sensor for detecting gas components, especially a volatile organic compound sensor (VOC), or any other sensor suitable for the cooking process, such as a temperature sensor, a humidity sensor, a flow sensor, etc. Advantageously, the sensor 110, especially the volatile organic compound sensor, can detect the gas components generated by food in the gas, thereby judging the state of the food in the cooking process, such as the degree of doneness, overheating and carbonization, or the presence of harmful components, etc., and then adjusting the cooking process accordingly, such as controlling the temperature, steam volume, ventilation or air supply, etc.

[0052] exist Figure 6 The sensor receiving device 100 of the ventilation device 10 according to the present application is shown separately in FIG. Figure 7 FIG. 1 shows the sensor receiving device 100 in a closed state in a cutaway manner. Figure 8 , the sensor receiving device 100 is shown in section in the open state.

[0053] like Figures 6 to 8 As shown, the sensor receiving device 100 includes a protective housing 120, and the sensor 110 is arranged in the inner space of the protective housing 120. Here, the protective housing 120 is configured with a housing inlet 121 connected to the first ventilation channel 210 and a housing outlet 122 connected to the suction side of the fan 300. Figures 6 to 8 It can also be seen that a movable baffle 130 is arranged at the housing inlet 121, wherein the movable baffle 130 can be driven to move by a driving device 140, that is, in the closed position ( Figure 7 ) and the open position ( Figure 8 ). Here, the driving device 140 includes a motor 141 and a motor turntable 142 driven to rotate by the motor 141. A connecting rod 143 extends from the motor turntable 142, and the connecting rod 143 is slidably engaged in a slide groove 144 connected to the movable baffle 130. As a result, the rotational motion of the motor turntable 142 driven by the motor 141 can be converted into the linear motion of the movable baffle 130, thereby controlling the movement of the movable baffle 130 between the closed position and the open position.

[0054] exist Fig. 9Schematically shows the gas flow line of the ventilation device 10 according to the present application when the movable baffle 130 is closed. In the closed position of the movable baffle 130, the movable baffle 130 closes the shell inlet 121, thereby keeping the sensor 110 isolated from the gas in the cooking space 20. Here, the gas in the cooking space 20 is only discharged to the surrounding environment through the first ventilation channel 210, the fan 300 and the second ventilation channel 220 in sequence. In this way, the sensor 110 can be protected from damage without using the sensor 110 to detect the gas in the cooking space 20. For example, when the household cooking appliance 1 is cleaned at high temperature, the high-temperature steam temperature can reach 400-500°C. By using the movable baffle 130 to close the shell inlet 121, the sensor 110 can be prevented from being damaged due to high temperature or high humidity.

[0055] exist Fig.10 Schematically shows the gas flow line of the ventilation device 10 according to the present application when the movable baffle 130 is opened. At the open position of the movable baffle 130, the shell inlet 121 is released, so that the sensor accommodating device 100 or the protective shell 120 forms another branch for the gas in the cooking space 20 (shown as a dotted line). Due to the action of the fan 300, a negative pressure is formed at the shell outlet 122, so that part of the gas flowing through the first ventilation channel 210 is sucked through the protective shell 120, that is, through the sensor 110, especially the volatile organic compound sensor, so that the sensor 110 can detect the gas and obtain the required measurement parameters, such as the components in the gas. Afterwards, the gas flowing through the protective shell 120 is merged into the second ventilation channel 220 again through the shell outlet 122 and is discharged to the surrounding environment together with the gas therein.

[0056] exist Fig.11 , a simplified circuit diagram of a gas flow line of the ventilation device 10 is shown, wherein a gas flow branch flowing through the sensor receiving device 100 is shown by a dotted line.

[0057] exist Fig.12 The schematic diagram in FIG. 1 shows a system block diagram of a household cooking appliance 1 according to the present application. Fig.12As shown in , the household cooking appliance 1 includes a control unit 30, which is configured to control the cooking process of the household cooking appliance 1, such as baking / steaming temperature, time, etc., and / or control the ventilation device 10 according to the present application. According to a preferred embodiment, the control unit 30 is configured to control the cooking process according to the sensor signal of the sensor 110. Here, the control unit 30 can obtain the gas components generated by the food during the cooking process measured by the sensor 110, such as a volatile organic compound sensor, and analyze and evaluate them. Through analysis and evaluation, the control unit 30 can determine the state of the food during the cooking process, and then control / regulate the cooking process accordingly, so as to advantageously realize intelligent automated cooking and obtain the desired cooking products.

[0058] In the description of the embodiments of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0059] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in this disclosure can be understood according to the circumstances.

[0060] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative, not restrictive, unless otherwise stated. In specific implementations, multiple features may be combined with each other, depending on actual needs, where technically feasible. In particular, the features in different embodiments may also be combined with each other. Various replacements, changes, and modifications may also be conceived without departing from the spirit and scope of the present application.

Claims

1. A ventilation device (10) for a domestic cooking appliance (1), wherein: The ventilation device (10) comprises: A channel assembly (200), the channel assembly (200) having a ventilation inlet (211) and a ventilation outlet (221), wherein the ventilation inlet (211) is in communication with a cooking space (20) of the household cooking appliance (1), and the ventilation outlet (221) is in communication with a surrounding environment of the household cooking appliance (1); a fan (300), the fan (300) being configured to drive the gas in the cooking space (20) of the household cooking appliance (1) to flow through the channel assembly (200); and A sensor receiving device (100) having a sensor (110) arranged therein, the sensor receiving device (100) constituting a branch between the ventilation inlet (211) and the ventilation outlet (221), The sensor receiving device (100) is switchable between a first state and a second state. In the first state, the sensor (110) is kept isolated from the gas in the cooking space (20), In the second state, the gas in the cooking space (20) is allowed to flow through the sensor (110) under the action of the fan (300).

2. The ventilation device (10) according to claim 1, wherein: The channel assembly (200) is configured with a first ventilation channel (210) and a second ventilation channel (220). The first ventilation channel (210) is connected to the suction side of the fan (300) on one hand, and communicates with the cooking space (20) via the ventilation inlet (211) on the other hand. The second ventilation passage (220) is connected to the exhaust side of the fan (300) on the one hand, and is communicated with the surrounding environment via the ventilation outlet (221) on the other hand.

3. The ventilation device (10) according to claim 2, wherein: The sensor accommodating device (100) comprises a protective housing (120) and a movable baffle (130), wherein the sensor (110) is arranged in an internal space of the protective housing (120). The protective housing (120) is configured with a housing inlet (121) communicating with the first ventilation channel (210) and a housing outlet (122) communicating with the suction side of the fan (300). The movable baffle (130) closes the housing inlet (121) at a first position in the first state and releases the housing inlet (121) at a second position in the second state.

4. The ventilation device (10) according to claim 3, wherein: The sensor receiving device (100) comprises a driving device (140), wherein the driving device (140) is configured to drive the movable baffle (130) to move between the first position and the second position.

5. The ventilation device (10) according to claim 4, wherein: The driving device (140) is constructed as a crank slider mechanism driven by a motor (141).

6. The ventilation device (10) according to claim 2, wherein: The channel assembly (200) includes a first shell element (230), a second shell element (240), and a spacing element (250) arranged between the first shell element (230) and the second shell element (240). The first ventilation channel (210) is formed between the first shell element (230) and the spacer element (250), and The second ventilation channel (220) is formed between the second shell element (240) and the spacing element (250).

7. The ventilation device (10) according to claim 6, wherein: The ventilation inlet (211) is configured on the first shell element (230), and / or The first shell element (230) constitutes at least one of the boundary surfaces defining the cooking space (20).

8. The ventilation device (10) according to any one of claims 1 to 7, wherein: The sensor (110) comprises a sensor for detecting gas components, in particular a volatile organic compound sensor.

9. A household cooking appliance (1), wherein: The domestic cooking appliance (1) has a ventilation device (10) according to any one of claims 1 to 8.

10. The household cooking appliance (1) according to claim 9, wherein: The domestic cooking appliance (1) has a control unit (30) which is configured to control a cooking process in accordance with a sensor signal of a sensor (110) in a sensor receiving device (100) of the ventilation device (10).

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