Humidity detection device and cooking utensil

Abstract

The invention discloses a humidity detection device which comprises a heat conductor, a first part of the heat conductor exchanges heat with a first area, a second part of the heat conductor exchanges heat with a second area, and the temperature of the first area is different from that of the second area; the first temperature sensor is used for detecting the temperature of the heat conductor; the second temperature sensor is used for detecting the temperature of the first area; and the processor is used for calculating the humidity of the first area according to the temperatures detected by the first temperature sensor and the second temperature sensor. The invention further discloses the cooking utensil with the humidity detection device. The device has the beneficial effects that the device can be applied in a high-temperature environment, the moisture retention detection result is high in accuracy, the price is low, and the cost is saved.

Description

Technical Field

[0001] The invention relates to a humidity detection device and a cooking utensil, belonging to the technical field of kitchen appliances. Background Art

[0002] At present, in the field of kitchen appliance technology, the humidity in the cavity of the cooking utensil has a significant impact on the cooking quality of food. In order to achieve the control of the humidity in the cavity, it is necessary to first detect the humidity in the cavity, and then adjust it according to the humidity detection structure to meet the cooking requirements. However, in actual application, the internal environment of the cavity is a high-temperature environment. The accuracy of common humidity sensors in high-temperature environments cannot be guaranteed, and they cannot even work normally at high temperatures, so they cannot accurately detect the humidity in the cavity. There are also some methods in the existing technology that use conductivity, infrared sensors, ultrasonic detectors, oxygen sensors, etc. to measure the humidity in the oven, but the cost of these detection devices is relatively high. Summary of the invention

[0003] The present invention provides a humidity detection device and a cooking utensil to solve the above technical problems.

[0004] The present invention is achieved through the following technical solutions.

[0005] A humidity detection device, comprising:

[0006] A heat conductor, wherein a first portion of the heat conductor exchanges heat with a first region, and a second portion of the heat conductor exchanges heat with a second region, and a temperature of the first region is different from a temperature of the second region;

[0007] A first temperature sensor, used to detect the temperature of the heat conductor;

[0008] a second temperature sensor, used to detect the temperature of the first area;

[0009] The processor calculates the humidity of the first area according to the temperatures detected by the first temperature sensor and the second temperature sensor.

[0010] As a further improvement of the present invention, the temperature of the first region is greater than the temperature of the second region.

[0011] As a further improvement of the present invention, the humidity detection device forms a first flow path and passes through the first area, and the gas flows along the first flow path.

[0012] As a further improvement of the present invention, the humidity detection device is formed with a second flow path, the second flow path is connected with the first flow path and passes through the second area, and the gas flows along the first flow path and flows to the second flow path.

[0013] As a further improvement of the present invention, the humidity detection device is formed with a second flow path, the second flow path passes through the second area, and the cooling medium flows along the second flow path.

[0014] As a further improvement of the present invention, a first cooling medium guiding mechanism is provided on the second flow path for guiding the cooling medium to flow along the second flow path.

[0015] As a further improvement of the present invention, the humidity detection device also includes a cavity and a first heat dissipation channel located outside the cavity, the first flow path is at least partially formed in the cavity, the second flow path is formed in the first heat dissipation channel, and the first cooling medium guiding mechanism is arranged in the first heat dissipation channel.

[0016] As a further improvement of the present invention, the second flow path is connected to the first flow path, and the gas flows along the first flow path and flows to the second flow path.

[0017] As a further improvement of the present invention, the humidity detection device forms a third flow path, along which the cooling medium flows, the third flow path intersects with the first flow path, and the cooling medium flowing along the third flow path and the gas flowing along the first flow path perform direct or indirect heat exchange.

[0018] As a further improvement of the present invention, the second flow path and the third flow path are arranged independently of each other.

[0019] As a further improvement of the present invention, the heat conductor passes through the third flow path, and the heat conductor is wrapped with a heat insulating member that isolates the heat conductor from gas and / or cooling medium inside the third flow path.

[0020] As a further improvement of the present invention, a first cooling medium guiding mechanism is provided on the second flow path for guiding the cooling medium to flow along the second flow path, and a second cooling medium guiding mechanism is provided on the third flow path for guiding the cooling medium to flow along the third flow path.

[0021] As a further improvement of the present invention, the humidity detection device also includes a cavity, a first heat dissipation channel and a second heat dissipation channel, the first heat dissipation channel and the second heat dissipation channel are located outside the cavity, the first flow path is at least partially formed in the cavity, the second flow path is formed in the first heat dissipation channel, the first cooling medium guiding mechanism is arranged in the first heat dissipation channel, the third flow path is formed in the second heat dissipation channel, and the second cooling medium guiding mechanism is arranged in the second heat dissipation channel.

[0022] As a further improvement of the present invention, the downstream end of the second flow path is connected to the upstream end of the third flow path, and a first cooling medium guiding mechanism is provided on the second flow path or the third flow path or at the connection between the second flow path and the third flow path, for guiding the cooling medium to flow along the second flow path and the third flow path.

[0023] As a further improvement of the present invention, the humidity monitoring device also includes a cavity, a first heat dissipation channel, and a second heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel are located outside the cavity, the downstream end of the first heat dissipation channel is connected to the upstream end of the second heat dissipation channel, the first flow path is at least partially formed in the cavity, the third flow path is formed in the second heat dissipation channel, the second flow path is formed in the first heat dissipation channel, and the first cooling medium guiding mechanism is arranged at the connection between the first heat dissipation channel and the second heat dissipation channel.

[0024] As a further improvement of the present invention, the humidity detection device further includes a third temperature sensor for detecting the temperature of the second part or the temperature of the second area.

[0025] As a further improvement of the present invention, the humidity detection device also includes a third temperature sensor and a fourth temperature sensor, the heat conductor also includes a third part whose two ends respectively transfer heat to the first part and the second part, the first temperature sensor is used to detect the temperature at the connection point between the third part and the first part, the third temperature sensor is used to detect the temperature at the connection point between the third part and the second part, and the fourth temperature sensor is used to detect the temperature of the first part.

[0026] As a further improvement of the present invention, the third portion of the heat conductor is wrapped with a heat insulating member, and the heat insulating member isolates the third portion from the gas and / or cooling medium and / or heat conductor outside the heat conductor.

[0027] As a further improvement of the present invention, the second portion of the heat conductor is provided with a heat dissipation structure.

[0028] A cooking utensil comprises the humidity detection device.

[0029] Beneficial effects of the present invention:

[0030] By transferring heat through a heat conductor and following the law of conservation of heat, the heat transfer coefficient of the gas is obtained by detecting the temperature, and then the steam ratio is obtained through the heat transfer coefficient to indirectly calculate the humidity. The invention can be applied in a high temperature environment and can ensure the accuracy of the humidity detection result in a high temperature environment. The temperature sensor used in the humidity detection of the present invention is low in price and can achieve the purpose of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0032] Figure 1 It is a schematic diagram of the heat dissipation state of the heat conductor;

[0033] Figure 2 is a schematic cross-sectional view of a heat conductor;

[0034] Figure 3 It is a schematic diagram of the explosion of the heat conductor;

[0035] Figure 4 A schematic diagram of a first implementation method of humidity detection;

[0036] Figure 5 is a schematic diagram of a second implementation method of humidity detection;

[0037] Figure 6 is a schematic diagram of a third implementation method of humidity detection;

[0038] Figure 7 A schematic diagram of a first path setting of a humidity detection device;

[0039] Figure 8 A schematic diagram of a second path setting of a humidity detection device;

[0040] Fig. 9 It is a schematic diagram of the structural composition of the humidity detection device under the second path setting;

[0041] Fig.10 A schematic diagram of a third path setting of a humidity detection device;

[0042] Fig.11 It is a schematic diagram of the structural composition of the humidity detection device under the third path setting;

[0043] Fig.12 A schematic diagram of a fourth path setting of a humidity detection device;

[0044] Fig.13 It is a schematic diagram of the structural composition of the humidity detection device under the fourth path setting;

[0045] Fig.14 is a schematic diagram of a first heat dissipation structure of a heat conductor;

[0046] Fig.15 Schematic diagram of the second heat dissipation structure of the heat conductor. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0048] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0049] The humidity detection device of this embodiment transfers heat through a heat conductor and follows the law of conservation of heat, obtains the heat transfer coefficient of the gas by detecting the temperature, and then obtains the steam ratio through the heat transfer coefficient to indirectly calculate the humidity. Compared with using a humidity sensor to directly detect humidity, it can be used in a high temperature environment and ensure the accuracy of the detection results in a high temperature environment. In addition, compared with detecting humidity by infrared, ultrasonic, oxygen sensing and other methods, the detection element used in this embodiment is a temperature sensor, which is relatively low in cost and has more application value.

[0050] A humidity detection device, referring to Figure 1 , Figure 4 , including a heat conductor 1, a first temperature sensor a1, a second temperature sensor a2, and a processor (not shown in the figure). The heat conductor 1 has a first portion 11 and a second portion 12, the first portion 11 can exchange heat with the first region p1, the second portion 12 can exchange heat with the second region p2, the first region p1 and the second region p2 have different temperatures, so that heat is transferred from the first portion 11 to the second portion 12 along the heat conductor, or from the second portion 12 to the first portion 11 along the heat conductor 1.

[0051] In the first implementation mode of humidity detection, refer to Figure 4 The first temperature sensor a1 is used to detect the temperature of the heat conductor 1, and the second temperature sensor a2 is used to detect the temperature of the first area p1. The processor can calculate the humidity of the first area p1 according to the temperatures detected by the first temperature sensor a1 and the second temperature sensor a2.

[0052] The heat transferred between the first region p1 and the first part 11 of the heat conductor 1 is the same as the heat transferred between the first part 11 and the second part 12 of the heat conductor 1, and the same as the heat transferred between the second part 12 and the second region p2. When the temperature of the second region p2 can be determined and the heat transfer coefficient of the heat conductor 1 is known, the heat transfer coefficient of the first region p1 can be calculated. Since the steam-air heat transfer coefficient is determined by the proportion of steam, the air humidity of the first region p1 can be calculated.

[0053] In practical application, the humidity of the first region p1 can be calculated using a humidity calculation function H=f(T1, T2), where H is the humidity of the first region p1, T1 is the temperature of the heat conductor 1, and T2 is the temperature of the first region p1.

[0054] In the second implementation method of humidity detection, refer to Figure 5 Combined with Figure 1 The humidity detection device further includes a third temperature sensor a3. The first temperature sensor a1 is used to detect the temperature of the heat conductor 1, the second temperature sensor a2 is used to detect the temperature of the first area p1, and the third temperature sensor a3 is used to detect the temperature of the second part 12 or the temperature of the second area p2.

[0055] The heat transferred between the first region p1 and the first part 11 of the heat conductor 1 is the same as the heat transferred between the first part 11 and the second part 12 of the heat conductor 1, and the same as the heat transferred between the second part 12 and the second region p2. When the temperature of the second region p2 can be determined and the heat transfer coefficient of the heat conductor 1 is known, the heat transfer coefficient of the first region p1 can be calculated. Since the steam-air heat transfer coefficient is determined by the proportion of steam, the air humidity of the first region p1 can be calculated.

[0056] Compared with the first implementation method of humidity detection, a third temperature sensor a3 is added to detect the temperature of the second part 12 or the second area p2. This implementation method is more suitable for situations where there are uncertainties in the ambient temperature of the second area p2, or the ambient temperature of the second area p2 changes in different application environments, different application time periods, etc. In addition, compared with the first implementation method, the deviation caused by the ambient temperature of the second area p2 is eliminated by direct detection, so that the detection result is more accurate.

[0057] In actual application, the humidity of the first area p1 can be calculated using the humidity calculation function H=f(T1, T2, T3), where H is the temperature of the first area p1, T1 is the temperature of the heat conductor 1, T2 is the temperature of the first area p1, and T3 is the temperature of the second area p2 or the second part 12.

[0058] In the third embodiment of humidity detection, refer to Figure 6 Combined with Figure 1The humidity detection device further includes a third temperature sensor a3 and a fourth temperature sensor a4. The heat conductor 1 further includes a third portion 13. The two ends of the third portion 13 respectively conduct heat transfer with the first portion 11 and the second portion 12. The first temperature sensor a1 is used to detect the temperature at the connection point between the third portion 13 and the first portion 11, the third temperature sensor a3 is used to detect the temperature at the connection point between the third portion 13 and the second portion 12, and the fourth temperature sensor a4 is used to detect the temperature of the first portion 11.

[0059] Compared with the first two humidity detection implementations, the result of calculating humidity is more accurate. The calculation principle of this implementation is as follows:

[0060] When the temperatures of the first region p1 and the second region p2 are different and the heat conductor 1 only exchanges heat with the first region p1 and the second region p2, heat is transferred from the first region p1 to the second region p2 or from the second region p2 to the first region p1 through the heat conductor 1. According to the law of conservation of energy, Q 1 =Q 2 , Q 1 is the heat transferred between the first region p1 and the first portion 11, Q 2 is the heat transferred by the third part 13 of the heat conductor 1; that is, α×A 1 ×(T2-T1)=λ×1 / L×A 2 ×(T3-T4), α is the heat transfer coefficient of the air in the first region p1, λ is the thermal conductivity of the heat conductor 1, A 1 is the area where heat exchange occurs between the first portion 11 and the first region p1, A 2 is the cross-sectional area of ​​the third portion 13, L is the length of the third portion 13, T1 is the temperature detected by the first temperature sensor a1, T2 is the temperature detected by the second temperature sensor a2, T3 is the temperature detected by the third temperature sensor a3, and T4 is the temperature detected by the fourth temperature sensor a4, wherein λ, A 1 , A 2 , L are determined values, and the values ​​of (T3-T4) and (T2-T1) can be used to calculate α, thereby calculating the humidity of the first area p1.

[0061] In practical application, the humidity of the first area p1 may be calculated using a humidity calculation function H=f(T1, T2, T3, T4).

[0062] In the third implementation mode of humidity detection, the third portion 13 of the heat conductor 1 is wrapped with a heat insulating member 14, which isolates the third portion 13 from the gas and / or cooling medium and / or heat conductor outside the heat conductor 1, so that no heat loss occurs during heat transfer between the first area p1 and the second area p2 through the heat conductor 1, thereby ensuring the accuracy of the calculated humidity. The heat insulating member 14 can be made of heat insulating materials such as heat insulating rubber.

[0063] In this embodiment, the temperature of the first area p1 is greater than the temperature of the second area p2, that is, heat is transferred from the first area p1 to the heat conductor 1, and then transferred from the heat conductor 1 to the second area p2. The humidity detection device of this embodiment is suitable for use in cooking utensils. The first area p1 can be set in the inner cavity of the cooking utensils, and the second area p2 can be set outside the inner cavity of the cooking utensils, such as in a heat dissipation environment. The humidity in the inner cavity can be calculated more accurately through the humidity detection device of this embodiment.

[0064] In this implementation case, refer to Figure 1-Figure 3 The heat conductor 1 is provided with a mounting hole 15, and the mounting hole 15 forms an opening 16 on the surface of the heat conductor 1. At least one temperature measuring resistor 17 is arranged in the mounting hole 15, and the temperature measuring resistor 17 is connected to a circuit 171, which is led out of the heat conductor 1 through the opening 16 of the mounting hole 15.

[0065] A protective housing 18 is provided outside the temperature measuring resistor 17, and the protective housing 18 plays a role of limiting protection for the temperature measuring resistor 17 to ensure its function of detecting temperature. The protective housing 18 includes at least two split structures 181, which are assembled to form a complete protective housing 18. At least one split structure 181 is provided with a receiving groove to form an assembly space for accommodating the temperature measuring resistor 17. During assembly, the temperature measuring resistor 17 is first embedded in the receiving groove, and then the split structures 181 are assembled into the protective housing 18, so that the assembly of the temperature measuring resistor 17 is more convenient.

[0066] The heat conductor 1 is provided with a buckle structure 191 passed by the circuit 171 at the opening 16 of the mounting hole 15, and an elastic member 192 is provided in the mounting hole 15. The two ends of the elastic member 192 are supported on the buckle structure 191 and the protective shell 18 respectively, which can prevent the protective shell 18 from axial displacement along the mounting hole 15, and play a good positioning role for the protective shell 18 and the temperature measuring resistor 17. In addition, the protective shell 18 can be made of a rigid material with good temperature resistance and heat conductivity, such as thermal conductive ceramics (silicon nitride, etc.). On the one hand, the protective shell 18 can play a good protective role for the temperature measuring resistor 17, and on the other hand, the sufficient rigidity prevents the protective shell 18 from being deformed under the elastic force of the elastic member 192. In addition, the elastic member 192 can be a spring, and is sleeved outside the circuit 171.

[0067] The heat conductor 1 is provided with a locking structure 131 on the surface of the third part 13, and the inner surface of the thermal insulation 14 is provided with a locking groove that is engaged with the locking structure 131, or the heat conductor 1 is provided with a locking groove on the surface of the third part 13, and the inner surface of the thermal insulation 14 is provided with a locking structure that is engaged with the locking groove, which can avoid relative misalignment between the thermal insulation 14 and the heat conductor 1, thereby ensuring that the thermal insulation 14 can completely wrap the third part 13, so as to prevent heat transfer damage and cause inaccurate detection results.

[0068] The surface of the first part 11 is provided with a hydrophobic coating to prevent steam from condensing in this part, thereby avoiding affecting the humidity measurement. Alternatively, the surface of the first part 11 is set as a curved surface so that condensed water can quickly flow around, thereby avoiding affecting the humidity measurement.

[0069] In the first implementation mode of humidity detection, one temperature measuring resistor 17 is provided to form a first temperature sensor a1.

[0070] In the second implementation mode of humidity detection, if the third temperature sensor a3 detects the temperature of the second part 12, two temperature measuring resistors 17 are set in the mounting hole 15, one of the temperature measuring resistors 17 corresponds to the second part 12 of the heat conductor 1 at the position of the mounting hole 15, that is, the third temperature sensor a3 is formed, and the other temperature measuring resistor 17 forms the first temperature sensor a1. If the third temperature sensor a3 detects the temperature of the second area p2, a temperature measuring resistor 17 is set in the mounting hole 15, that is, the first temperature sensor a1 is formed.

[0071] In the third implementation mode of humidity detection, three temperature measuring resistors 17 are arranged in the mounting hole 15, and the positions of the three temperature measuring resistors 17 in the mounting hole 15 correspond to the connection between the third part 13 and the first part 11, the connection between the third part 13 and the second part 12, and the first part 11, respectively. That is, the first temperature sensor a1, the third temperature sensor a3, and the fourth temperature sensor a4 are formed respectively.

[0072] The heat conductor 1 of this embodiment is provided with a heat dissipation structure in its second portion 12 , and the heat dissipation structure can increase the heat exchange area between the second portion 12 and the second region p2 of the heat conductor 1 , thereby enhancing the heat dissipation effect of the second portion 12 .

[0073] In the first embodiment of the heat dissipation structure, refer to Fig.14 The heat dissipation structure includes a plurality of heat dissipation fins 121 arranged at intervals from each other, and the heat dissipation fins 121 are connected to the heat conductor 1. In the second embodiment of the heat dissipation structure, refer to Fig.15The heat dissipation structure includes a plurality of heat dissipation rings 122 spaced apart from each other, and the heat dissipation rings 122 are sleeved on the heat conductor 1. The heat dissipation fins 121 or the heat dissipation rings 122 can be fixedly connected to the heat conductor 1 by welding or fasteners, or can be set as an integral structure with the heat conductor 1.

[0074] The heat-conducting structure of this embodiment case arranges a temperature measuring resistor 17 in the heat conductor 1 so that the temperature measuring resistor 17 can realize real-time monitoring of the temperature of the heat conductor 1 more accurately. The position of the temperature measuring resistor 17 in the heat conductor 1 can be limited by setting a limit structure so that the temperature measuring resistor 17 can detect the temperature of the heat conductor 1 at the correct position, thereby ensuring that the humidity detection function can be realized and the accuracy of the humidity detection can be ensured.

[0075] The humidity detection device of this embodiment case refers to Figure 7 A first flow path r1 is formed, and the first flow path r1 passes through the first area p1. The gas flows along the first flow path r1 and exchanges heat with the heat conductor 1 when passing through the first area p1, transferring the heat to the first part 11 of the heat conductor 1. The heat is transferred to the second area p2 through the heat conductor 1 for heat dissipation.

[0076] In the implementation mode of the first path setting, the humidity detection device refers to Figure 7 , the humidity detection device is formed with a second flow path r2, the second flow path r2 is connected with the first flow path r1, and the second flow path r2 passes through the second area p2, the gas flows along the first flow path r1 and flows to the second flow path r2, that is, the gas is discharged along the first flow path r1 and the second flow path r2 to dissipate heat, the temperature of the gas gradually decreases, and when it flows to the second area p2, the second part 12 of the heat conductor 1 can be cooled down. In this embodiment, the humidity detection device does not rely on other cold sources, but dissipates heat by self-heating. In this embodiment, the humidity detection device does not rely on other cold sources, but dissipates heat by self-heating. In this embodiment in which the first flow path r1 and the second flow path r1 are connected, the cost of heat dissipation is relatively low, but the temperature difference between the first part 11 and the second part 12 of the heat conductor 1 is small, and the accuracy of humidity detection is relatively low.

[0077] The heat conductor 1 passes through the first flow path r1, and the heat insulation 14 wraps the third part 13 to isolate the heat conductor 1 from the gas and / or cooling medium, avoiding the heat conductor 1 from losing heat when transferring heat from the first part 11 to the second part 12, thereby ensuring the accuracy of the detection.

[0078] In the implementation mode of the second path setting, the humidity detection device refers to Figure 8The humidity detection device forms a second flow path r2, the second flow path r2 passes through the second area p2, and the cooling medium flows along the second flow path r2.

[0079] In the second embodiment, a first cooling medium guiding mechanism c1 is provided on the second flow path r2, and the first cooling medium guiding structure is used to guide the cooling medium to flow along the second flow path r2, and the cooling medium flows through the second area p2, and cools down the second part 12 of the heat conductor 1. The cooling medium can be a gas or a liquid, that is, the second flow path r2 can perform air cooling or water cooling on the second part 12 of the heat conductor 1, and correspondingly, the first cooling medium guiding mechanism c1 is set as a fan or a pump. In this embodiment, the humidity detection device relies on the first cooling guiding structure to cool down the second part 12 by guiding the cooling medium, and dissipates heat in a forced heat dissipation manner.

[0080] In the second embodiment, the first flow path r1 and the second flow path r2 are in communication, that is, the gas flows along the first flow path r1 and flows to the second flow path r2.

[0081] The heat conductor 1 passes through the first flow path r1, and the heat insulation 14 wraps the third part 13 to isolate the heat conductor 1 from the gas and / or cooling medium, avoiding the heat conductor 1 from losing heat when transferring heat from the first part 11 to the second part 12, thereby ensuring the accuracy of the detection.

[0082] Based on the implementation method of the second path setting, refer to Figure 8 , Fig. 9The humidity detection device of this embodiment case structurally comprises a cavity 2 and a first heat dissipation channel 31, wherein the first flow path r1 is at least partially formed in the cavity 2, the second flow path r2 is formed in the first heat dissipation channel 31, and the first cooling medium guiding mechanism c1 is arranged in the first heat dissipation channel 31. When the first cooling medium guiding mechanism is started, it can guide the cooling medium to flow along the second flow path r2, and flow through the second area p2 to cool the second part 12 of the heat conductor 1, so that the heat in the cavity 2 is transferred to the first heat dissipation channel through the heat conductor 1 for forced heat dissipation. A part of the heat conductor 1 is in the cavity 2, and another part is outside the cavity 2, and the first part 11 of the heat conductor 1 is located in the cavity 2, the part of the first flow path r1 located in the cavity 2 flows through the first area p1, so that the gas flowing through the first area p1 and the first part 11 of the heat conductor 1 are heat exchanged, the part of the first flow path r1 located outside the cavity 2 can discharge the gas in the cavity 2 and dissipate heat, and the second part 12 of the heat conductor 1 is located in the first heat dissipation channel 31 outside the cavity 2 and exchanges heat with the second area p2. The first cooling medium guiding mechanism c1 can be set at the upstream of the first heat dissipation channel relative to the heat conductor 1, and can also be set at the downstream of the first heat dissipation channel relative to the heat conductor 1. Compared with the situation where no cooling medium flows in both the first flow path r1 and the second flow path r2, the cooling medium flows in the second flow path r2 and the cooling medium does not flow in the first flow path r1, so that the temperature difference between the first part 11 and the second part 12 is increased, so that the heat conduction effect of the heat conductor 1 is more obvious, thereby improving the accuracy of humidity detection, and the cost is also low. In addition, the first flow path r1 and the second flow path r2 are set to be independent of each other, that is, the gas flows along the first flow path r1 and does not flow to the second flow path r2. A third flow path r3 is also set, and the third flow path r3 intersects with the first flow path r1 so that the gas can flow from the third flow path r3 to the first flow path r1.

[0083] The heat conductor 1 passes through the first flow path r1, and the heat insulation 14 wraps the third part 13 to isolate the heat conductor 1 from the gas and / or cooling medium, avoiding the heat conductor 1 from losing heat when transferring heat from the first part 11 to the second part 12, thereby ensuring the accuracy of the detection.

[0084] Based on the path setting, the structure includes a cavity 2, a second heat dissipation channel 32, and a cooling channel. The second heat dissipation channel 32 and the cooling channel are located outside the cavity 2, the second heat dissipation channel 32 and the cavity 2 are connected, the first flow path r1 is at least partially formed in the cavity 2, the second flow path r2 is formed in the second heat dissipation channel 32, the first cooling medium guiding mechanism c1 is arranged in the cooling channel, and the third flow path r3 is formed in the second heat dissipation channel 32. The gas in the cavity 2 flows along the first flow path r1 through the first area p1 and the first part 11 for heat exchange, and the gas flows into the second heat dissipation channel 32 for heat dissipation and discharge. The first cooling medium guiding mechanism c1 guides the cooling medium to flow in the cooling channel, and heat exchanges through the second area p2 and the second part 12 to achieve the effect of heat dissipation. Compared with the situation where no cooling medium flows in the first flow path r1 and the second flow path r2, there is cooling medium flowing in the second flow path r2 and no cooling medium flows in the first flow path r1, so that the temperature difference between the first part 11 and the second part 12 is increased, so that the heat conduction effect of the heat conductor 1 is more obvious, thereby improving the accuracy of humidity detection. At the same time, compared with the situation where the first flow path r1 and the second flow path r2 are connected, the cavity 2 and the cooling channel are not connected, that is, the first flow path r1 and the second flow path r2 are not connected, so that the temperature difference between the first part 11 and the second part 12 is further increased, so that the heat conduction effect of the heat conductor 1 is further enhanced, thereby further improving the accuracy of humidity detection. The second heat dissipation channel 32 usually needs to be provided with a second cooling medium guiding mechanism c2 to guide the cooling medium into the second heat dissipation channel 32, and the second cooling medium guiding mechanism c2 cannot guide the cooling medium into the cooling channel because the first flow path r1 and the second flow path r2 are not connected. Therefore, the setting of the first cooling medium guiding mechanism c1 increases the cost. Since the cavity 2 and the cooling channel are not connected, that is, the first flow path r1 and the second flow path r2 are not connected, the oil smoke carried in the gas will not enter the cooling channel, thereby affecting the second part, so that the second part is prevented from being contaminated with oil and affecting the heat dissipation effect. Furthermore, when the r2 cooling medium is introduced into the second flow path, the temperature difference between the first part 11 and the second part 12 is increased, thereby improving the accuracy of humidity detection, but the heat dissipation cost will be relatively increased.

[0085] In the implementation mode of the humidity detection device in the third path setting, refer to Fig.10, the humidity detection device is formed with a third flow path r3 on the basis of the first flow path r1 and the second flow path r2. The third flow path r3 intersects with the first flow path r1, the gas flows along the third flow path r3, and flows to the first flow path r1, passes through the first area p1 and the first part 11 of the heat conductor 1 for heat exchange, the cooling medium flows along the second flow path r2, passes through the second area p2 and the second part 12 of the heat conductor 1 for heat exchange, the cooling medium flows along the first flow path r1, and directly or indirectly exchanges heat with the gas flowing into the first flow path r1, the cooling medium of the second flow path r2 and the first flow path r1 can be gas or liquid, that is, the second flow path r2 and the first flow path r1 can perform air cooling or water cooling on the heat conductor 1. In this embodiment, the heat conductor 1 is cooled and cooled by the cooling medium of the second flow path r2 and the cooling medium of the first flow path r1, and the heat is dissipated in a dual cold source cooling and forced heat dissipation manner, thereby further improving the heat dissipation effect.

[0086] In the third embodiment, the second flow path r2 and the first flow path r1 are independently arranged, that is, the cooling medium of the second flow path r2 and the cooling medium of the first flow path r1 do not exchange heat, and the second flow path r2 and the first flow path r1 independently dissipate heat for the heat conductor 1, so that the heat dissipation effect of both can achieve the best effect.

[0087] In the third embodiment, the heat conductor 1 passes through the first flow path r1, and the thermal insulation 14 wraps the third part 13 to isolate the heat conductor 1 from the gas and / or cooling medium, thereby preventing the heat conductor 1 from losing heat when transferring heat from the first part 11 to the second part 12, thereby ensuring the accuracy of the detection.

[0088] In the third embodiment, the second flow path r2 is provided with a first cooling medium guiding mechanism c1, which guides the cooling medium to flow along the second flow path r2. If air cooling is adopted, the first cooling medium guiding mechanism c1 is set as a fan, and if water cooling is adopted, the first cooling medium guiding mechanism c1 is set as a pump. The first flow path r1 is provided with a second cooling medium guiding mechanism c2, which guides the cooling medium to flow along the first flow path r1, and can also be set as a fan or a pump.

[0089] Based on the implementation method of the third path setting, refer to Fig.10 , Fig.11The humidity detection device of this embodiment includes a cavity 2, a first heat dissipation channel 31, and a second heat dissipation channel 32 in terms of structural composition, wherein the first heat dissipation channel 31 and the second heat dissipation channel 32 are located outside the cavity 2, and the first heat dissipation channel 31 and the second heat dissipation channel 32 are independently arranged, and the heat conductor 1 passes through the second heat dissipation channel 32. The first flow path r1 is at least partially formed in the cavity 2, the second flow path r2 is formed in the first heat dissipation channel 31, the first cooling medium guiding mechanism c1 is arranged in the first heat dissipation channel 31, the first cooling medium guiding mechanism c1 can be arranged at the upstream of the first heat dissipation channel 31 relative to the heat conductor 1, and can also be arranged at the downstream of the first heat dissipation channel 31 relative to the heat conductor 1, the first flow path r1 is formed in the second heat dissipation channel 32, the second cooling medium guiding mechanism c2 is arranged in the second heat dissipation channel 32, the second cooling medium guiding mechanism c2 can be arranged at the upstream of the second heat dissipation channel 32 relative to the heat conductor 1, and can also be arranged at the downstream of the second heat dissipation channel 32 relative to the heat conductor 1.

[0090] In this embodiment, the first part 11 of the heat conductor 1 does not enter the cavity 2, thereby preventing the smoke from affecting the first part 11. At the same time, the first heat dissipation channel 31 and the second heat dissipation channel 32 are independently arranged, that is, the first flow path r1 and the second flow path r2 are independent of each other and not connected, so that the temperature difference between the first part 11 and the second part 12 of the heat conductor 1 is large, and the humidity detection result is more accurate, but the heat dissipation cost is relatively high.

[0091] The cavity 2 is provided with a connecting pipe 22 connecting the cavity 2 and the second heat dissipation channel 32, so that the gas in the cavity 2 can flow into the second heat dissipation channel 32 through the connecting pipe 22, that is, the third flow path r3 is partially formed in the cavity 2 and can intersect with the first flow path r1.

[0092] In the fourth embodiment of the humidity detection device, refer to Fig.12 The humidity monitoring device is formed with a first flow path r1, a second flow path r2, and a third flow path r3. The third flow path r3 intersects with the first flow path r1, the gas flows along the third flow path r3, and flows to the first flow path r1, passes through the first area p1 and the first part 11 of the heat conductor 1 to perform heat exchange, the cooling medium flows along the second flow path r2, passes through the second area p2 and the second part 12 of the heat conductor 1 to perform heat exchange, and the cooling medium flows along the first flow path r1, and performs direct or indirect heat exchange with the gas flowing into the first flow path r1.

[0093] The heat conductor 1 passes through the first flow path r1, and the heat insulation 14 wraps the third part 13 to isolate the heat conductor 1 from the gas and / or cooling medium, avoiding the heat conductor 1 from losing heat when transferring heat from the first part 11 to the second part 12, thereby ensuring the accuracy of the detection.

[0094] Different from the third embodiment, in this embodiment, the downstream end of the second flow path r2 is connected to the upstream end of the first flow path r1, and a first cooling medium guiding mechanism c1 is provided on the second flow path r2 or the first flow path r1 or at the connection point between the second flow path r2 and the first flow path r1, to guide the cooling medium to flow along the second flow path r2 and the first flow path r1, and to cool and dissipate the second part 12 and the first part 11 of the heat conductor 1 in sequence. In this embodiment, only the first cooling medium guiding mechanism c1 is used to guide the cooling medium, and the connection between the second flow path r2 and the first flow path r1 also makes the overall path setting more streamlined; and after the cooling medium cools and dissipates the second part 12 of the heat conductor 1, the remaining cooling medium cools and dissipates the first part 11 of the heat conductor 1, which can save energy consumption.

[0095] Based on the implementation method of the fourth path setting, refer to Fig.12 , Fig.13 The humidity detection device of this embodiment case structurally comprises a cavity 2, a first heat dissipation channel 31, and a second heat dissipation channel 32. The first heat dissipation channel 31 and the second heat dissipation channel 32 are located outside the cavity 2, the downstream end of the first heat dissipation channel 31 is connected to the upstream end of the second heat dissipation channel 32, the third flow path r3 is at least partially formed in the cavity 2, the first flow path r1 is formed in the second heat dissipation channel 32, the second flow path r2 is formed in the first heat dissipation channel 31, and the first cooling medium guiding mechanism c1 is arranged at the connection between the first heat dissipation channel 31 and the second heat dissipation channel 32.

[0096] In this embodiment, the first portion 11 of the heat conductor 1 does not enter the cavity 2, thereby preventing the influence of oil smoke on the first portion 11. At the same time, the first heat dissipation channel 31 is connected to the second heat dissipation channel 32, that is, the first flow path r1 is connected to the second flow path r2, so that the temperature difference between the first portion 11 and the second portion 12 of the heat conductor 1 is small, the humidity detection accuracy is low, but the heat dissipation cost is relatively low.

[0097] The cavity 2 is provided with a connecting pipe 22 connecting the cavity 2 and the second heat dissipation channel 32, so that the gas in the cavity 2 can flow into the second heat dissipation channel 32 through the connecting pipe 22, that is, the third flow path r3 is partially formed in the cavity 2 and can intersect with the first flow path r1.

[0098] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A humidity detection device, characterized in that: include: A heat conductor, wherein a first portion of the heat conductor exchanges heat with a first region, and a second portion of the heat conductor exchanges heat with a second region, and a temperature of the first region is different from a temperature of the second region; A first temperature sensor, used to detect the temperature of the heat conductor; a second temperature sensor, used to detect the temperature of the first area; The processor calculates the humidity of the first area according to the temperatures detected by the first temperature sensor and the second temperature sensor.

2. The humidity detection device according to claim 1, characterized in that: The temperature of the first region is greater than the temperature of the second region.

3. The humidity detection device according to claim 2, characterized in that: The humidity detection device is formed with a first flow path and passes through the first area, and the gas flows along the first flow path.

4. The humidity detection device according to claim 3, characterized in that: The humidity detection device is formed with a second flow path, the second flow path is connected to the first flow path and passes through the second area, and the gas flows along the first flow path and flows to the second flow path.

5. The humidity detection device according to claim 3, characterized in that: The humidity detection device is formed with a second flow path, the second flow path passes through the second area, and the cooling medium flows along the second flow path.

6. The humidity detection device according to claim 5, characterized in that: The second flow path is provided with a first cooling medium guiding mechanism for guiding the cooling medium to flow along the second flow path.

7. The humidity detection device according to claim 6, characterized in that: The humidity detection device also includes a cavity, a first heat dissipation channel outside the cavity, the first flow path is at least partially formed in the cavity, the second flow path is formed in the first heat dissipation channel, and the first cooling medium guiding mechanism is arranged in the first heat dissipation channel.

8. The humidity detection device according to claim 5, characterized in that: The second flow path is in communication with the first flow path, and the gas flows along the first flow path and flows to the second flow path.

9. The humidity detection device according to claims 5-8, characterized in that: The humidity detection device forms a third flow path, the cooling medium flows along the first flow path, the third flow path intersects with the first flow path, and the cooling medium flowing along the first flow path and the gas flowing along the third flow path perform direct or indirect heat exchange.

10. The humidity detection device according to claim 9, characterized in that: The second flow path and the first flow path are provided independently of each other.

11. The humidity detection device according to claim 10, characterized in that: The second flow path is provided with a first cooling medium guiding mechanism for guiding the cooling medium to flow along the second flow path, and the first flow path is provided with a second cooling medium guiding mechanism for guiding the cooling medium to flow along the first flow path.

12. The humidity detection device according to claim 11, characterized in that: The humidity detection device also includes a cavity, a first heat dissipation channel and a second heat dissipation channel, the first heat dissipation channel and the second heat dissipation channel are located outside the cavity, the third flow path is at least partially formed in the cavity, the second flow path is formed in the first heat dissipation channel, the first cooling medium guiding mechanism is arranged in the first heat dissipation channel, the first flow path is formed in the second heat dissipation channel, and the second cooling medium guiding mechanism is arranged in the second heat dissipation channel.

13. The humidity detection device according to claim 9, characterized in that: The downstream end of the second flow path is connected to the upstream end of the first flow path, and a first cooling medium guiding mechanism is provided on the second flow path or the first flow path or at the connection between the second flow path and the first flow path, for guiding the cooling medium to flow along the second flow path and the first flow path.

14. The humidity detection device according to claim 13, characterized in that: The humidity monitoring device also includes a cavity, a first heat dissipation channel, and a second heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel are located outside the cavity. The downstream end of the first heat dissipation channel is connected to the upstream end of the second heat dissipation channel. The third flow path is at least partially formed in the cavity. The first flow path is formed in the second heat dissipation channel. The second flow path is formed in the first heat dissipation channel. The first cooling medium guiding mechanism is arranged at the connection between the first heat dissipation channel and the second heat dissipation channel.

15. The humidity detection device according to claim 1, characterized in that: The humidity detection device further includes a third temperature sensor for detecting the temperature of the second portion or the temperature of the second area.

16. The humidity detection device according to claim 1, characterized in that: The humidity detection device also includes a third temperature sensor and a fourth temperature sensor. The heat conductor also includes a third part whose two ends respectively transfer heat to the first part and the second part. The first temperature sensor is used to detect the temperature at the connection point between the third part and the first part, the third temperature sensor is used to detect the temperature at the connection point between the third part and the second part, and the fourth temperature sensor is used to detect the temperature of the first part.

17. The humidity detection device according to claim 16, characterized in that: The third part of the heat conductor is wrapped with a heat insulating member, and the heat insulating member isolates the third part from the gas and / or cooling medium and / or heat conductor outside the heat conductor.

18. The humidity detection device according to any one of claims 1-8 and 5-17, characterized in that: The second part of the heat conductor is provided with a heat dissipation structure.

19. The humidity detection device according to any one of claims 1-8 and 5-17, characterized in that: At least one temperature measuring resistor is disposed in the heat conductor, and a limiting structure is disposed in the heat conductor, wherein the limiting structure is used to limit the position of the temperature measuring resistor in the heat conductor.

20. A cooking utensil, characterized in that: It comprises a humidity detection device as described in any one of claims 1-19.

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