Water-cooling pressure cooking utensil

Abstract

The utility model discloses a water-cooling pressure cooking utensil which comprises a pot body and a pot cover, the pot cover is provided with a water-cooling cavity, the pot body or the pot cover is further provided with a water tank, the water tank is provided with a water outlet and a water return port, the water outlet is communicated with the water-cooling cavity through a water outlet channel, and the water return port is communicated with the water-cooling cavity through a water return channel. And the temperature measuring piece extends into the water outlet channel. The temperature measuring piece extends into the water outlet channel, namely the temperature measuring piece is located on the flowing path of the cooling liquid flowing to the water cooling cavity, on one hand, the temperature measuring piece can be in direct contact with the cooling liquid flowing out of the water outlet to measure the temperature in real time, the temperature of the cooling liquid about to enter the water cooling cavity can be accurately detected, and the temperature measuring accuracy is higher. On the other hand, the temperature measuring piece is arranged in the water outlet channel, when the water tank is detached from the pressure cooking utensil, the temperature measuring piece cannot be detached along with the water tank, frequent disconnection of circuit connection is not needed, and the sealing structure of the water tank cannot be affected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the kitchen appliance technical field, concretely relates to a water-cooled pressure cooking utensil. BACKGROUND

[0002] The pressure cooking utensil needs to be depressurized after completing pressure cooking, so that the air pressure in the pot is balanced with the atmosphere, and the cover can be safely opened. The traditional pressure cooking utensil is depressurized by exhaust, which not only has a slow depressurization speed, but also produces a large noise during the depressurization process, and the liquid in the pot is also sprayed out during the exhaust process, which contaminates the cover and affects the user experience.

[0003] In order to improve the depressurization efficiency, some pressure cooking utensils use water cooling to depressurize. The water cooling depressurization method has a faster depressurization speed and produces less noise during the depressurization process compared to exhaust depressurization, so it is increasingly used in pressure cooking utensils.

[0004] The cooking utensil using water cooling to depressurize is provided with a water tank on the pot cover or the pot body, and a cooling cavity is provided on the pot cover. After pressure cooking is completed, the cooling liquid in the water tank flows into the cooling cavity to cool the air in the pot, and the cooled cooling liquid flows back to the water tank, so that the cooling liquid circulates. However, after the cooling liquid exchanges heat with the high-temperature air, the temperature of the cooling liquid rises, which leads to a higher cooling efficiency of the cooling liquid during the first circulation between the water tank and the cooling cavity. As the temperature of the cooling liquid increases, the temperature difference between the cooling liquid and the air in the pot becomes smaller, which gradually reduces the efficiency of water cooling. This results in a long water cooling depressurization process, even ineffective water cooling, and the overall depressurization speed and efficiency are difficult to improve, which leads to poor user experience.

[0005] In addition, in order to meet the user's visual requirements, the water tank is generally made to be fully transparent or semi-transparent, which limits the selection of the water tank material. On the other hand, the cost, production stability and use stability of the water tank also need to be considered, and there are fewer water tank materials that meet these conditions. The temperature resistance of these materials is often not very high, which puts higher requirements on the water temperature in the water tank. The temperature of the cooling liquid during the cooling cycle may exceed the temperature limit of the water tank material.

[0006] In the prior art, the pressure cooking utensil does not monitor the water temperature of the water tank, and once the water temperature exceeds the safe temperature of the water tank, the water tank will be deformed or even leak and rupture. If a temperature measuring element is simply arranged in the water tank, on the one hand, the temperature measuring element cannot accurately detect the temperature of the cooling liquid entering the cooling cavity because the cooling liquid with a low temperature not entering the cooling cavity and the cooling liquid with a high temperature flowing back from the cooling cavity to the water tank are mixed in the water tank, resulting in a large error in temperature detection. On the other hand, in order to facilitate the user to supplement the cooling liquid, most models are designed to be detachable, so that frequent assembly and disassembly not only increase the difficulty of circuit connection of the temperature measuring element, but also seriously affect the stability of the circuit connection. Practical new type content

[0007] The utility model provides a water -cooled pressure cooking utensil to solve the problem that the pressure cooking utensil with water cooling function cannot detect the temperature of the cooling liquid in the water tank, resulting in that the temperature of the cooling liquid is increased during the circulation of the cooling liquid, the water cooling efficiency is gradually reduced, the service life of the water tank is affected by high temperature, the circuit connection of the temperature measuring element is difficult, and the temperature of the cooling liquid cannot be accurately detected.

[0008] The utility model adopts the technical scheme that:

[0009] A water -cooled pressure cooking utensil, including the pot body and the pot cover, the pot cover is provided with water -cooled cavity, the pot body or the pot cover is provided with water tank still, the water tank has the water outlet and the backwater, the water outlet is communicated with water -cooled cavity through the water outlet channel, the backwater is communicated with water -cooled cavity through the backwater channel, the water -cooled pressure cooking utensil still includes the temperature measuring element, and the temperature measuring element extends into the water outlet channel.

[0010] In the utility model, the temperature measuring element is arranged between the water -cooled cavity and the water outlet and extends into the water outlet channel, i.e. is located on the flow path of the cooling liquid flowing to the water -cooled cavity, so that the cooling liquid continuously flowing out of the water outlet can contact the temperature measuring element during the water cooling process, on the one hand, the temperature measuring element can directly contact the cooling liquid flowing out of the water outlet and measure the temperature in real time, so that the temperature of the cooling liquid about to enter the water -cooled cavity can be accurately detected, and the temperature measuring accuracy is higher. On the other hand, the temperature measuring element is arranged in the water outlet channel, when the water tank is detached from the pressure cooking utensil, the temperature measuring element will not be detached with the water tank, but is always kept inside the pressure cooking utensil, so that the position of the temperature measuring element is fixed, and the circuit connection does not need to be frequently disconnected, so that the connection is more stable. And the temperature measuring element will not directly contact the water tank, so as not to affect the sealing structure of the water tank.

[0011] By setting the temperature measuring piece, the temperature of the cooling liquid flowing to the water cooling cavity can be detected in real time, so that the water cooling efficiency and the temperature of the cooling liquid are more controllable. For example, when it is detected that the temperature of the cooling liquid flowing to the water cooling cavity is higher than the set temperature value, the cooling liquid is controlled to stop circulating, that is, the water cooling decompression is suspended, to avoid the temperature of the cooling liquid continuing to rise. At this time, the decompression can be continued by other ways such as natural decompression and exhaust decompression. For another example, a cooling device can also be arranged in the pressure cooking utensil. When it is detected that the temperature of the cooling liquid flowing to the water cooling cavity is higher than the set temperature value, the cooling device is controlled to cool the cooling liquid in the water tank, so that the water cooling decompression continues and the water cooling efficiency is maintained at a high level. At the same time, timely control of the temperature of the cooling liquid can also keep the temperature of the cooling liquid below the safe temperature of the water tank, reduce the risk of deformation or damage of the water tank at high temperature, and improve the service life of the water tank.

[0012] The water tank is detachably mounted on the pot body or the pot cover, and the pot body or the pot cover is provided with a water pumping seat in communication with the water outlet. Part of the water outlet channel is located in the water pumping seat, and the temperature measuring piece is arranged in the water pumping seat.

[0013] In the scheme, the water pumping seat is arranged on the pot cover or the pot body. When the water tank is detached, the water pumping seat is separated. When the water tank is installed in place, the water pumping seat is in abutting connection. The temperature measuring piece is arranged in the water pumping seat and extends into the water outlet channel. The temperature measuring piece can be integrated on the water pumping seat, so that the temperature measuring piece and the water pumping seat form an assembly and can be installed together on the pot cover or the pot body, thereby reducing the installation difficulty and making the structure of the pressure cooking utensil more compact.

[0014] The water pumping seat is provided with a sealing ring. The sealing ring is in abutting connection with the rim of the water outlet. The axial distance between the temperature measuring piece and the water outlet is greater than the axial distance between the sealing ring and the water outlet.

[0015] In the scheme, the temperature measuring piece is farther away from the water outlet than the sealing ring, so as to form an avoidance for the sealing cooperation between the sealing ring and the water outlet. During the dismounting and mounting of the water tank, the water tank does not directly contact the temperature measuring piece, so the temperature measuring piece does not affect the sealing between the water outlet of the water tank and the sealing ring. In the state that the water tank is detached, the temperature measuring piece does not protrude from the water pumping seat, so the user is less likely to touch the temperature measuring piece. Therefore, the temperature measuring piece is less affected by the external environment, has a reliable structure and good user experience.

[0016] The water pumping seat is also provided with a filter part. The filter part is provided with a filter hole. The filter part is located between the temperature measuring piece and the water outlet.

[0017] In the scheme, the filter is located between the water outlet and the temperature measuring member. On the one hand, the filter can filter the impurities of the particles flowing out of the water outlet, so that the impurities are blocked at the filter and cannot enter the water cooling cavity through the water outlet channel, thereby ensuring the cleanliness of the water cooling cavity. On the other hand, the plurality of filter holes can disperse the cooling liquid flowing out of the water outlet, so that the flow rate of the cooling liquid is relatively reduced and more dispersed after passing through the filter, thereby enabling the cooling liquid to fully contact the temperature measuring member and enabling the temperature measuring member to more accurately perceive the temperature of the cooling liquid, thereby improving the temperature measuring accuracy.

[0018] The water-cooled pressure cooking appliance further comprises a water pump, which is arranged in the water outlet channel and located downstream of the temperature measuring member in the flow direction of the cooling liquid. The water pump is configured to pump the cooling liquid in the water tank into the water cooling cavity through the water outlet channel.

[0019] In the scheme, the pumping of the water pump can accelerate the circulation speed of the cooling liquid between the water tank and the water cooling cavity, thereby improving the cooling efficiency. Meanwhile, the water pump is located downstream of the temperature measuring member, and the water pump has a reverse cutoff function. Therefore, during the water cooling process and after the water cooling is completed, the cooling liquid in the water cooling cavity and the steam formed after the cooling liquid is vaporized cannot flow reversely to the water outlet, but only flow back to the backwater outlet. In this way, the fluid can reliably flow between the water tank and the water cooling cavity, and the temperature measuring member is prevented from being affected by the steam, thereby preventing the temperature measurement from fluctuating and ensuring the temperature detection accuracy.

[0020] The water outlet is provided with a water outlet switch having a sealing portion. The sealing portion seals the water outlet, and the water outlet switch can move under the suction of the water pump to open the water outlet.

[0021] In the scheme, when the water tank is installed on the pressure cooking appliance, the sealing portion of the water outlet switch seals the water outlet, so that the water outlet is not in communication with the water cooling cavity. Only when the water pump is turned on, the water outlet switch is moved by the negative pressure generated by the operation of the water pump to open the water outlet. In this way, the water outlet remains in a normally closed state, and only when the water pump is working, that is, when the water cooling function is started, the water outlet is turned on, so that the cooling liquid in the water tank is always isolated from the outside world and is not easily contaminated. Meanwhile, when the water cooling is completed, the water pump stops working, and the water outlet is closed again, thereby preventing the cooling liquid in the water tank from continuously flowing into the water cooling cavity through the water outlet after the water cooling is completed.

[0022] The temperature measuring member has a detection probe. An axis of the detection probe is arranged in parallel with an axis of the water outlet, and a projection of the detection probe towards the water outlet is located in the water outlet. Alternatively, the axis of the detection probe is arranged at an angle with the axis of the water outlet.

[0023] In the scheme, the axis of the detection probe is parallel to the axis of the water outlet, and the projection of the detection probe towards the water outlet is located in the water outlet, so that the cooling liquid flowing out of the water outlet can directly flow towards the detection probe and contact the detection probe head-on, thus the contact effect of the two is better, and the contact is more sufficient, thereby helping to ensure the detection accuracy of the temperature measuring element.

[0024] If the axis of the detection probe is arranged at an angle with the axis of the water outlet, the contact effect of the detection probe and the cooling liquid can be ensured, and the detection probe can reduce the blocking of the cooling liquid, so that the cooling liquid maintains a high flow rate, thereby improving the water cooling circulation efficiency.

[0025] The pot cover has a connecting end, which is rotationally connected with the pot body, so that the pot cover can be flipped around the connecting end. The top surface of the pot cover is provided with a mounting recess, which extends to the connecting end, and the water tank is mounted in the mounting recess.

[0026] In the scheme, the mounting recess of the top surface of the pot cover extends to the edge of the connecting end of the pot cover, so that after the water tank is mounted at the mounting position, the top surface of the water tank constitutes part of the appearance surface of the top of the pot cover, and the side surface of the water tank constitutes part of the appearance surface of the side of the pot cover, so that the top surface and the side surface of the water tank are exposed to the pot cover and constitute the appearance surface of the pot cover. Therefore, when the water tank is taken out or put in, the user can simultaneously hold the side surface and the top surface of the water tank, and by applying force to the two mutually angled surfaces, the user can more conveniently apply force and the operation is more comfortable. In this way, the water tank can be easily taken out of or mounted at the mounting position, which facilitates the mounting and dismounting of the water tank. Moreover, based on the convenient holding, the height of the water tank can be reduced, so that the top surface of the water tank does not excessively protrude from the top surface of the pot cover, or even can be flush with the top surface of the pot cover. Thus, the height difference between the top surface of the water tank and the top surface of the pot cover is greatly reduced, the overall protrusion of the pot cover is reduced, the appearance and the appearance quality are improved, and the overall volume of the pot cover in the height direction is reduced, which is helpful for miniaturization.

[0027] In addition, the water tank is closer to the connecting end, so that the water tank is closer to the rotation center of the pot cover, and the force arm of the water tank and the rotation center of the pot cover is shorter. On the one hand, the structural gravity center of the pot cover is moved backward and is closer to the rotation center, so that the torsional force requirement of the torsional spring is small, the stress on the torsional spring is smaller, the torsional spring is not easy to break or be damaged, the service life of the torsional spring is improved, and the cost is saved. At the same time, since the gravity center of the pot cover is closer to the connecting end, the user can save more effort when operating the cover opening and closing.

[0028] The backwater channel is provided with an air vent valve, which includes a valve body and a valve core arranged in the valve body. The valve core can move under the negative pressure state of the backwater channel to connect the backwater channel with the atmosphere.

[0029] In the scheme, during the water cooling process, the valve core isolates the backwater channel from the outside atmosphere, and the cooling liquid in the water cooling cavity can flow back to the backwater outlet through the backwater channel, thereby completing the backflow of the cooling liquid. When the cooling liquid in the water cooling cavity is heated, steam is generated, and the air pressure in the water cooling cavity first increases (higher than the outside atmospheric pressure). After the water cooling is completed, the cooling liquid gradually cools down, and the condensation of the steam causes the air pressure to decrease (lower than the outside atmospheric pressure). At this time, the valve core can move under the negative pressure of the water cooling cavity, so that the backwater channel is connected with the outside, the gas exchange is realized, and the air pressure in the water cooling cavity and the outside atmosphere are balanced again. In this way, after the water cooling stage is completed, the flow of the cooling liquid between the water tank and the water cooling cavity can be stopped in time, so that the cooling liquid is not continuously heated in the water cooling cavity after the water cooling is completed, and the flow of the cooling liquid is started and stopped in time, so that the water cooling work can be reliably carried out, and a high water cooling effect can be maintained during the whole water cooling process.

[0030] The pot cover comprises a cover body and an inner cover located at the lower side of the cover body, the inner cover cooperates with the pot body to form a cooking cavity, the cover body is provided with a cooling piece, the water cooling cavity is located inside the cooling piece, the inner cover is provided with a through hole, and the cooling piece extends to the cooking cavity through the through hole.

[0031] In the scheme, after the water tank and the water cooling cavity are connected through the pipeline, in subsequent use, whether the user rotates the inner cover or removes the inner cover, the water cooling cavity will not be separated from the pot cover, and the relative position with the water tank is always fixed, and there is no relative movement between the two, so the position of the pipeline is also stable, and reliable connection is always maintained. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0033] Figure 1 It is a structure explosion view of the pot cover part structure under an embodiment of the present application;

[0034] Figure 2 It is a structure sectional view of the pot cover part structure under the new embodiment of the present application;

[0035] Figure 3 It is Figure 2 It is an enlarged view of area A in the middle;

[0036] Figure 4 It is a structure sectional view of the water pumping seat under an embodiment of the present application;

[0037] Figure 5 is a sectional view of the pot cover part structure under an embodiment of the present application;

[0038] Figure 6 is a sectional view of the air vent under an embodiment of the present application, wherein the arrow indicates the flow direction of the cooling liquid;

[0039] Figure 7 is a sectional view of the pot cover part structure under an embodiment of the present application;

[0040] Figure 8 is an exploded view of the pot cover under another embodiment of the present application.

[0041] Among them:

[0042] 1 pot cover; 11 connecting end; 12 cover body; 13 inner cover; 131 through hole; 14 mounting groove;

[0043] 2 water tank; 21 water outlet; 22 water return port; 23 water outlet switch; 231 sealing part; 232 elastic part; 24 water outlet channel; 25 water return switch;

[0044] 3 temperature measuring part; 31 detection probe; 32 sealing rubber ring;

[0045] 4 water pumping seat; 41 sealing ring; 42 filtering part; 43 opening;

[0046] 5 air vent; 51 valve body; 52 valve core;

[0047] 6 water pump;

[0048] 7 cooling part; 71 water cooling cavity. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner with reference to the accompanying drawings.

[0050] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0051] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] As shown in Figure 1 , Figure 2 , Figure 3 A water-cooled pressure cooking utensil, comprising a pot body and a pot cover 1, the pot cover 1 is provided with a water-cooled cavity 71, and the pot body or the pot cover 1 is further provided with a water tank 2, the water tank 2 has a water outlet 21 and a water return port 22, the water outlet 21 is communicated with the water-cooled cavity 71 through a water outlet channel 24, the water return port 22 is communicated with the water-cooled cavity 71 through a water return channel, and the water-cooled pressure cooking utensil further comprises a temperature measuring element 3, the temperature measuring element 3 extends into the water outlet channel 24.

[0055] It can be understood that, in a specific embodiment, the cooling liquid is water, and the user can directly add municipal tap water into the water tank 2 as the cooling liquid to save the use cost of the user. Of course, the cooling liquid can also be other liquid medium, which is not limited here.

[0056] It can be understood that when the water-cooled pressure reduction program is started, the cooling liquid in the water tank 2 flows out from the water outlet 21 under the action of the water pump 6 or the cooling liquid gravity, flows into the water-cooled cavity 71 through the water outlet channel 24, exchanges heat with the high-temperature air in the pot, and then flows to the water return port 22 through the water return channel, and then flows back to the water tank 2, so as to circulate.

[0057] In the utility model, temperature measuring part 3 is arranged between water cooling cavity 71 and water outlet 21 and extends into water outlet channel 24, that is, is located on the flow path of the cooling liquid flowing to water cooling cavity 71, therefore, in the water cooling process, the cooling liquid continuously flowing out of water outlet 21 can contact temperature measuring part 3, on the one hand, temperature measuring part 3 can directly contact the cooling liquid flowing out of water outlet 21 to measure the temperature in real time, so that the temperature of the cooling liquid about to enter water cooling cavity 71 can be accurately detected, and the influence of the cooling liquid with higher temperature flowing back in water tank 2 is avoided, so that the temperature measuring accuracy is higher. On the other hand, temperature measuring part 3 is arranged in water outlet channel 24, when water tank 2 is detached from the pressure cooking utensil, temperature measuring part 3 will not be detached together with water tank 2, but is always kept inside the pressure cooking utensil, so that the position of temperature measuring part 3 is fixed, and the circuit connection also does not need to be frequently disconnected, so that the connection is more stable. And temperature measuring part 3 will not directly contact water tank 2, so that the sealing structure of water tank 2 is not affected.

[0058] By arranging temperature measuring part 3, the temperature of the cooling liquid flowing to water cooling cavity 71 can be detected in real time, so that the water cooling efficiency and the temperature of the cooling liquid are more controllable, the temperature of the cooling liquid is kept below the safe temperature of water tank 2, the risk of deformation or damage of water tank 2 under high temperature is reduced, and the service life of water tank 2 is improved. However, it should be noted that the utility model only provides a temperature detection scheme of the cooling liquid, and does not limit the temperature control scheme. Specifically, in actual application, the pressure cooking utensil includes but is not limited to the following embodiments.

[0059] Embodiment 1: in this embodiment, when it is detected that the temperature of the cooling liquid flowing to water cooling cavity 71 is higher than the set temperature value, the control unit of the pressure cooking utensil controls the cooling liquid to stop circulating flow by stopping water pump 6 and the like, that is, the water cooling decompression is suspended, so as to avoid the temperature of the cooling liquid continuing to rise. At this time, other ways such as natural decompression and exhaust decompression can be used to continue decompression until the opening cover requirement is met, or the water cooling is started again after the temperature of the cooling liquid is reduced to the safe temperature.

[0060] Embodiment 2: in this embodiment, a cooling device is arranged inside the pressure cooking utensil, when it is detected that the temperature of the cooling liquid flowing to water cooling cavity 71 is higher than the set temperature value, the control unit of the pressure cooking utensil controls the cooling device to cool the cooling liquid in water tank 2, so that the water cooling decompression continues, and the water cooling efficiency is kept high.

[0061] It can be understood that the highest safe temperature value is reasonably set according to the temperature resistance value of the material of water tank 2 and the change of the temperature of the cooling liquid and the water cooling efficiency, and the highest safe temperature value should be lower than the temperature resistance value of the material of water tank 2.

[0062] As a preferred embodiment of the utility model, Figure 1 ,Figure 2 , Figure 3 As shown, the water tank 2 is detachably installed on the pot body or pot cover 1. The pot body or pot cover 1 is provided with a water pumping seat 4 that is connected to the water outlet 21. A part of the water outlet channel 24 is located inside the water pumping seat 4, and the temperature measuring element 3 is installed on the water pumping seat 4.

[0063] The water suction base 4 is installed on the lid 1 or the pot body. When the water tank 2 is removed, it separates from the water suction base 4; when the water tank 2 is installed, it connects with the water suction base 4. The temperature measuring element 3 is located inside the water suction base 4 and extends into the water outlet channel 24. It not only contacts the coolant flowing out of the outlet 21 to measure its temperature, but also allows the temperature measuring element 3 to be integrated into the water suction base 4, thus forming a component that can be installed together on the lid 1 or the pot body. This reduces installation difficulty and makes the structure of the pressure cooking appliance more compact.

[0064] Specifically, such as Figure 4 As shown, the wall of the water outlet channel 24 has an opening 43 for the detection probe 31 of the temperature measuring element 3 to extend into. The detection probe 31 extends into the water outlet channel 24 through the opening 43. A sealing ring 32 is provided at the opening 43, and the outer periphery of the detection probe 31 abuts against the sealing ring 32 for sealing.

[0065] Preferably, such as Figure 3 As shown, the water pump base 4 is equipped with a sealing ring 41, which abuts against the edge of the water outlet 21 for sealing. The axial distance between the temperature measuring element 3 and the water outlet 21 is greater than the axial distance between the sealing ring 41 and the water outlet 21.

[0066] The temperature sensing element 3 is further away from the water outlet 21 than the sealing ring 41, so that the temperature sensing element 3 does not protrude from the sealing ring 41. This avoids the sealing fit between the sealing ring 41 and the water outlet 21. During the disassembly and assembly of the water tank 2, the water tank 2 will not directly contact the temperature sensing element 3. Therefore, the temperature sensing element 3 will not affect the seal between the water outlet 21 of the water tank 2 and the sealing ring 41. At the same time, when the water tank 2 is removed, the temperature sensing element 3 will not protrude from the water pump seat 4, making it more difficult for the user to touch the temperature sensing element 3. Therefore, the temperature sensing element 3 is less affected by the external environment, has a reliable structure, and provides a good user experience.

[0067] Specifically, the sealing ring 41 abuts against the wall of the water tank 2 where the outlet 21 is located, so the axial distance between it and the outlet 21 is 0. Taking the embodiment shown in the figure as an example, the outlet 21 of the water tank 2 is opened on the bottom wall of the water tank 2 and is located above the temperature measuring element 3. The sealing ring 41 abuts against the bottom wall of the water tank 2 and seals it. The upper edge of the temperature measuring element 3 is lower than the upper edge of the sealing ring 41.

[0068] Preferably, such as Figure 3As shown, the water pumping seat 4 is further provided with a filter part 42, the filter part 42 is provided with filter holes, and the filter part 42 is located between the temperature measuring part 3 and the water outlet 21.

[0069] The filter part 42 is located between the water outlet 21 and the temperature measuring part 3. On the one hand, the filter part 42 can filter the impurities of the particles flowing out of the water outlet 21, so that the impurities are blocked at the filter part 42 and cannot enter the water cooling cavity 71 through the water outlet channel 24, thereby ensuring the cleanliness of the water cooling cavity 71. On the other hand, the plurality of filter holes can disperse the cooling liquid flowing out of the water outlet 21, so that the cooling liquid has a relatively reduced flow rate and is more dispersed after passing through the filter part 42, thereby being able to fully contact the temperature measuring part 3, so that the temperature measuring part 3 can more accurately perceive the temperature of the cooling liquid and improve the temperature measuring accuracy.

[0070] Specifically, as shown in Figure 1 , Figure 3 , the water pumping seat 4 is provided with a sealing ring 41 for abutting and sealing with the edge of the water outlet 21. The sealing ring 41 and the filter part 42 are integrally formed, so that the filter part 42 also has a flexible structure, thereby facilitating user cleaning and reducing the flow resistance of the cooling liquid, so that the cooling liquid flows smoothly.

[0071] In a preferred embodiment, as shown in Figure 2 , Figure 7 , the water-cooled pressure cooking appliance further comprises a water pump 6, the water pump 6 is arranged in the water outlet channel 24 and is located downstream of the temperature measuring part 3 along the flow direction of the cooling liquid. The water pump 6 is used to pump the cooling liquid in the water tank 2 into the water cooling cavity 71 through the water outlet channel 24.

[0072] The pumping of the water pump 6 can accelerate the circulation speed of the cooling liquid between the water tank 2 and the water cooling cavity 71, thereby improving the cooling efficiency. At the same time, the water pump 6 is located downstream of the temperature measuring part 3, that is, during the water cooling process, the cooling liquid in the water tank 2 enters the water outlet channel 24, first flows through the temperature measuring part 3, and then flows through the water pump 6. The water pump 6 has a reverse cutoff function, so that during the water cooling process and after the water cooling is completed, the cooling liquid in the water cooling cavity 71 and the steam formed after the cooling liquid vaporizes cannot flow reversely to the water outlet 21, but only flows back to the backwater outlet 22. In this way, the fluid can reliably flow between the water tank 2 and the water cooling cavity 71, and the temperature measuring part 3 is also prevented from being affected by the steam to cause fluctuations in temperature measurement, thereby ensuring the accuracy of temperature detection.

[0073] Further, as shown in Figure 3 , the water outlet 21 is provided with a water outlet switch 23, the water outlet switch 23 has a sealing part 231, the sealing part 231 seals the water outlet 21, and the water outlet switch 23 can move under the suction of the water pump 6 to open the water outlet 21.

[0074] As shown in Figure 3As shown, the water outlet switch 23 further comprises an elastic part 232.

[0075] When the water tank 2 is installed on the pressure cooking utensil, the sealing part 231 of the water outlet switch 23 seals the water outlet 21 so that it is not communicated with the water cooling cavity 71, only when the water pump 6 is started, the water outlet switch 23 is moved by the negative pressure generated by the working of the water pump 6, so that the sealing part 231 opens the water outlet 21.

[0076] Preferably, as shown in the drawings, Figure 5 As shown, the water return port 22 is provided with a water return switch 25, which can be opened by the fluid in the water return channel. So that the water return port 22 is also in a normally closed state, during the water cooling process, the cooling liquid in the water cooling cavity 71 continuously enters the water return channel, and then pushes the water return switch 25 to open the water return port 22, and when the pushing force of the fluid in the water cooling cavity 71 and the water return channel is insufficient to move the water return switch 25, the water return switch 25 will block the water return port 22, further ensuring that the cooling liquid in the water tank 2 is always isolated from the outside world and is not easily contaminated.

[0077] It should be noted that the arrangement of the temperature measuring part 3 is not limited in the utility model, in one embodiment, as shown in the drawings, Figure 3 As shown, the temperature measuring part 3 has a detection probe 31, the axis of the detection probe 31 is arranged in parallel with the axis of the water outlet 21, and the projection of the detection probe 31 towards the water outlet 21 is located in the water outlet 21.

[0078] The axis of the detection probe 31 is parallel to the axis of the water outlet 21, and the projection of the detection probe 31 towards the water outlet 21 is located in the water outlet 21, so that the cooling liquid flowing out of the water outlet 21 can directly flow towards the detection probe 31 and contact the detection probe 31, so that the contact effect of the two is better and the contact is more sufficient, thereby helping to ensure the detection accuracy of the temperature measuring part 3.

[0079] Specifically, as shown in the drawings, Figure 3 The detection probe 31 is coaxially arranged with the water outlet 21, so that the cooling liquid flowing out of the water outlet 21 can surround the detection probe 31 and fully contact the detection probe 31, thereby improving the detection accuracy.

[0080] In another embodiment, the axis of the detection probe 31 is arranged at an angle with the axis of the water outlet 21, on the basis of ensuring the contact of the detection probe 31 with the cooling liquid, the detection probe 31 reduces the obstruction to the cooling liquid, so that the cooling liquid maintains a high flow rate, thereby improving the water cooling circulation efficiency.

[0081] Specifically, the detection probe 31 can be inserted into the water outlet channel 24 transversely, so that the axis of the detection probe 31 is perpendicular to the axis of the water outlet 21. Of course, the detection probe 31 can also be inserted into the water outlet channel 24 at other angles, which is not limited herein.

[0082] The present application does not limit the setting position of the water tank 2, and as a preferred embodiment, as shown in Figure 2 , Figure 7 , Figure 8 The pot cover 1 has a connecting end 11, and the connecting end 11 is rotationally connected with the pot body, so that the pot cover 1 can be flipped around the connecting end 11. The top surface of the pot cover 1 is provided with a mounting recess 14, the mounting recess 14 extends to the connecting end 11, and the water tank 2 is mounted in the mounting recess 14.

[0083] The water tank 2 is arranged on the pot cover 1, so that the length of the pipeline between the water tank 2 and the water cooling cavity 71 is greatly shortened, which helps to improve the flow efficiency and circulation efficiency of the cooling liquid.

[0084] The mounting recess 14 of the top surface of the pot cover 1 extends to the edge of the connecting end 11 of the pot cover 1, so that after the water tank 2 is mounted on the mounting position, the top surface of the water tank 2 constitutes part of the appearance surface of the top of the pot cover 1, and the side surface of the water tank 2 constitutes part of the appearance surface of the side of the pot cover 1, so that the top surface and the side surface of the water tank 2 are exposed to the pot cover 1 and constitute the appearance surface of the pot cover 1. Therefore, when the water tank 2 is taken out or installed, the user can simultaneously grasp the side surface and the top surface of the water tank 2, and by applying force to the two mutually angled surfaces, the user can more conveniently apply force, and the operation is more comfortable. In this way, the water tank 2 can be easily taken out of or installed on the mounting position, which not only facilitates the mounting and dismounting of the water tank 2, but also helps to reduce the height of the water tank 2, so that the height of the water tank 2 can be appropriately reduced, so that the top surface of the water tank 2 does not excessively protrude from the top surface of the pot cover 1, or even can be flush with the top surface of the pot cover 1. Thus, the height difference between the top surface of the water tank 2 and the top surface of the pot cover 1 is greatly reduced, the overall prominence of the pot cover 1 is reduced, the appearance and appearance quality are improved, and the overall volume of the pot cover 1 in the height direction is reduced, which helps to miniaturize.

[0085] Preferably, the top surface of the water tank 2 is flush with the top surface of the face cover of the pot cover 1, so as to improve the appearance uniformity of the pot cover 1. Of course, the top surface of the water tank 2 can also be higher or lower than the top surface of the face cover.

[0086] In addition, the water tank 2 is closer to the connecting end 11, so that the water tank 2 is closer to the rotation center of the pot cover 1, and the force arm of the water tank 2 and the rotation center of the pot cover 1 is shorter. On the one hand, the structural gravity center of the pot cover 1 is moved backward and is closer to the rotation center, so that the torsional force demand of the torsional spring is small, the stress of the torsional spring is smaller, the torsional spring is not easy to break or damage, the service life of the torsional spring is improved, and the cost is saved. At the same time, since the gravity center of the pot cover 1 is closer to the connecting end 11, the user is more labor-saving when operating the opening and closing of the cover.

[0087] In another embodiment, the water tank 2 can also be arranged in the pot body, which is not limited here.

[0088] Preferably, as shown in Figure 1 、 Figure 6 The backwater channel is provided with an air valve 5, and the air valve 5 includes a valve body 51 and a valve core 52 arranged in the valve body 51. The valve core 52 can move in the negative pressure state of the backwater channel to make the backwater channel communicate with the atmosphere.

[0089] During water cooling, the cooling liquid in the water cooling cavity 71 will be heated and evaporated to form water vapor. After water cooling, the residual cooling liquid in the water cooling cavity 71 evaporates, the high-pressure steam in the pipeline starts to cool, the internal pressure starts to decrease, and finally becomes less than the atmospheric pressure. When it is less than the atmospheric pressure, the cooling liquid in the pipeline between the water outlet 21 of the water tank 2 and the water cooling cavity 71 will be pressed into the water cooling cavity 71 by the atmospheric pressure and be evaporated or even boiled for the second time. In this way, the cooling liquid in the water tank 2 will be heated by the hot steam formed by the residual cooling liquid in the water cooling cavity 71, which will affect the water cooling efficiency and even lose the water cooling effect. In addition, the noise of the residual cooling liquid boiling in the water cooling cavity 71 will last throughout the cooking process, which will affect the user experience.

[0090] In the water cooling process, the valve core 52 isolates the water return channel from the outside atmosphere, and the cooling liquid in the water cooling cavity 71 can return to the water return port 22 through the water return channel, so as to complete the return of the cooling liquid. When the cooling liquid in the water cooling cavity 71 is heated, steam is generated, and the air pressure in the water cooling cavity 71 first increases (higher than the outside atmospheric pressure). After the water cooling is completed, the cooling liquid gradually cools down, and the steam condenses to reduce the air pressure (lower than the outside atmospheric pressure). At this time, the valve core 52 can move under the negative pressure of the water cooling cavity 71, so that the water return channel is connected with the outside, the gas exchange is realized, and the air pressure in the water cooling cavity 71 and the outside atmosphere are balanced again. In this way, after the water cooling stage is completed, the flow of the cooling liquid between the water tank 2 and the water cooling cavity 71 can be stopped in time, so as to avoid that the cooling liquid continuously enters the water cooling cavity 71 under the action of the air pressure and is continuously heated after the water cooling is completed. The cooling liquid in the water cooling cavity 71 is continuously heated to generate steam or even boil for a long time to produce noise for a long time. The flow of the cooling liquid is ensured to start and stop in time, the water cooling work is ensured to be reliably performed, and a high water cooling effect is maintained during the whole water cooling process.

[0091] As a preferred embodiment, as shown in Figure 2 、 Figure 7 The pot cover 1 includes a cover body 12 and an inner cover 13 located at the lower side of the cover body 12. The inner cover 13 cooperates with the pot body to form a cooking cavity. The cover body 12 is provided with a cooling member 7, and the water cooling cavity 71 is located inside the cooling member 7. The inner cover 13 is provided with a through hole 131, and the cooling member 7 extends into the cooking cavity through the through hole 131.

[0092] The cooling member 7 is arranged on the cover body 12, and the water cooling cavity 71 is located inside the cooling member 7. The lower end of the cooling member 7 extends into the cooking cavity through the through hole 131 of the inner cover 13 to directly contact with the high-temperature gas in the cooking cavity, so as to cool the cooking cavity and achieve the purpose of rapid pressure relief. Since the cooling member 7 is arranged on the cover body 12, even if the inner cover 13 can rotate relative to the cover body 12, the cover body 12 will not move, thereby ensuring that the cooling member 7 and the water cooling pipeline connected with the cooling member 7 will not change position, and further ensuring that the water cooling pipeline and the water cooling cavity 71 maintain stable connection and sealing, and improving the connection reliability of the pipeline.

[0093] In addition, when the inner cover 13 is detached from the cover body 12, the cooling member 7 always remains on the cover body 12 and does not change position with the mounting and dismounting of the inner cover 13. On the one hand, the user does not need to connect the water cooling pipeline with the water cooling cavity 71 when mounting the inner cover 13, which reduces the mounting and dismounting efficiency and operation convenience of the inner cover 13 and improves the user experience. On the other hand, the water cooling pipeline can always be connected with the water cooling cavity 71, and the water cooling pipeline and the water cooling cavity 71 do not need to be connected frequently, thereby ensuring the connection and sealing, further reducing the risk of leakage of the water cooling liquid, and ensuring the water cooling efficiency.

[0094] In summary, after the water tank 2 and the water cooling cavity 71 are connected through the pipeline, in the subsequent use, no matter the user rotates the inner cover 13 or dismounts the inner cover 13, the water cooling cavity 71 will not be separated from the cover body 12 all the time, and the relative position with the water tank 2 is always fixed, and there is no relative movement between the two, so the position of the pipeline is also stable, and reliable connection is always maintained.

[0095] It should be noted that although the cooling member 7 is arranged on the cover body 12 in the utility model, the rotation and dismounting of the inner cover 13 will not affect the position of the cooling member 7 and the water cooling cavity 71. However, the utility model does not limit whether the inner cover 13 is rotatable, and whether the inner cover 13 is dismountable.

[0096] In other embodiments, the cooling member 7 can also be arranged on the inner cover 13, for example, the cooling member 7 is arranged on the upper side or the lower side of the inner cover 13, the water cooling cavity 71 is located inside the cooling member 7, or the cooling member 7 cooperates with the upper surface or the lower surface of the inner cover 13 to enclose the water cooling cavity 71.

[0097] The places not described in the utility model can be realized by adopting or referring to the existing technology.

[0098] Each embodiment in the specification adopts a progressive manner for description, and the same and similar parts between each embodiment can be referred to, and each embodiment mainly describes the difference from other embodiments.

[0099] The above only describes the embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the claim range of the utility model.

Claims

1. A water-cooled pressure cooking appliance comprising a pot body and a pot cover, wherein the pot cover is provided with a water-cooling cavity, characterized in that the pot body or the pot cover is further provided with a water tank, the water tank is provided with a water outlet and a water return outlet, the water outlet is communicated with the water-cooling cavity through a water outlet channel, the water return outlet is communicated with the water-cooling cavity through a water return channel, and the water-cooled pressure cooking appliance further comprises a temperature measuring member, the temperature measuring member extends into the water outlet channel.

2. The water-cooled pressure cooking appliance according to claim 1, characterized in that the water tank is detachably mounted on the pot body or the pot cover, the pot body or the pot cover is provided with a water pumping seat which is communicated with the water outlet, a part of the water outlet channel is located in the water pumping seat, and the temperature measuring member is arranged in the water pumping seat.

3. The water-cooled pressure cooking appliance according to claim 2, characterized in that the water pumping seat is provided with a sealing ring, the sealing ring abuts and seals with the mouth of the water outlet, and the axial distance between the temperature measuring member and the water outlet is greater than the axial distance between the sealing ring and the water outlet.

4. The water-cooled pressure cooking appliance according to claim 2, characterized in that the water pumping seat is further provided with a filter part, the filter part is provided with filter holes, and the filter part is located between the temperature measuring member and the water outlet.

5. The water-cooled pressure cooking appliance according to claim 1, characterized in that the water-cooled pressure cooking appliance further comprises a water pump, the water pump is arranged in the water outlet channel and is located downstream of the temperature measuring member along the flow direction of the cooling liquid, and the water pump is used for pumping the cooling liquid in the water tank into the water-cooling cavity through the water outlet channel.

6. The water-cooled pressure cooking appliance according to claim 5, characterized in that the water outlet is provided with a water outlet switch, the water outlet switch is provided with a sealing part, the sealing part seals the water outlet, and the water outlet switch can move under the suction of the water pump to open the water outlet by the sealing part.

7. The water-cooled pressure cooking appliance according to claim 1, characterized in that the temperature measuring member is provided with a detection probe, the axis of the detection probe is arranged in parallel with the axis of the water outlet, and the projection of the detection probe towards the water outlet is located in the water outlet; or the axis of the detection probe is arranged at an angle with the axis of the water outlet.

8. The water-cooled pressure cooking appliance according to claim 1, characterized in that the pot cover is provided with a connecting end, the connecting end is rotationally connected with the pot body so that the pot cover can be flipped around the connecting end, the top surface of the pot cover is provided with a mounting recess, the mounting recess extends to the connecting end, and the water tank is mounted in the mounting recess.

9. The water-cooled pressure cooking appliance according to claim 1, characterized in that the water return channel is provided with an air vent valve, the air vent valve comprises a valve body and a valve core arranged in the valve body, and the valve core can move under the negative pressure state of the water return channel to communicate the water return channel with the outside atmosphere.

10. The water-cooled pressure cooking appliance according to claim 1, characterized in that ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The pot cover comprises a cover body and an inner cover arranged at the lower side of the cover body, the inner cover and the pot body cooperate to form a cooking cavity, the cover body is provided with a cooling member, the water cooling cavity is arranged inside the cooling member, the inner cover is provided with a through hole, and the cooling member extends into the cooking cavity through the through hole.

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