Cooking utensil, control method and control device

Abstract

The invention relates to the technical field of kitchen appliances, and provides a cooking utensil, a control method and a control device.The cooking utensil comprises a cooking body, a hot water / steam generating device and a controller; the hot water / steam generating device is arranged on the cooking main body; the controller is connected with the cooking body and the hot water / steam generating device and used for controlling the hot water / steam generating device to provide hot water into the cooking body when the rice of the cooking body is in the soaking stage and controlling the hot water / steam generating device to provide steam into the cooking body when the rice of the cooking body is in the boiling stage. The electric rice cooker can shorten the cooking time, realize steam defoaming and prevent rice bubbles from overflowing, and has the characteristics of high cooking efficiency, safety, reliability and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a cooking appliance, a control method and a control device. Background Art

[0002] In the related art, in order to prevent the rice bubbles generated by steaming rice or cooking porridge in an electric rice cooker from overflowing, the methods commonly used include: (1) installing a steam valve or a similar exhaust mechanism on the lid of the rice cooker. Although this solution can alleviate the overflow of rice bubbles, it will still overflow when the amount of rice is large; (2) a vacuum device is provided on the lid of the rice cooker. When the pressure rise in the cooker body is detected, the vacuum device is started to quickly exhaust air. When negative pressure is formed in the cooker body, the rice bubbles burst quickly, thereby preventing overflow. However, after the rice soup enters the flow channel of the vacuum device, an adhesion layer is formed and it is difficult to clean. After being deteriorated for a long time, it will flow back into the cooker body with condensed water, affecting the safety of consumers. Summary of the invention

[0003] The present invention provides a cooking utensil, a control method and a control device, which can shorten the cooking time, realize steam defoaming, prevent rice bubbles from overflowing, and have the characteristics of high cooking efficiency, safety and reliability.

[0004] The present invention provides a cooking utensil, comprising:

[0005] Cooking subject;

[0006] A hot water / steam generating device, arranged on the cooking body;

[0007] The controller is connected to the cooking body and the hot water / steam generating device, respectively, and is used to control the hot water / steam generating device to provide hot water to the cooking body when the rice in the cooking body is in a soaking stage, and to control the hot water / steam generating device to provide steam to the cooking body when the rice in the cooking body is in a boiling stage.

[0008] According to a cooking appliance provided by the present invention, when the rice in the cooking body is in the gelatinization stage, the controller controls the hot water / steam generating device to provide steam into the cooking body.

[0009] According to a cooking utensil provided by the present invention, a hot water spray head and a steam spray head are arranged on the top of the cooking body, the steam spray head is located at the center of the cooking body, the hot water spray head is offset from the center of the cooking body, and the water outlet of the hot water spray head is located on the side wall of the hot water spray head;

[0010] The water inlet of the hot water spray head and the steam inlet of the steam spray head are respectively connected to the hot water / steam generating device.

[0011] According to a cooking appliance provided by the present invention, the hot water / steam generating device comprises:

[0012] A water tank, a water pumping device and a heating device are connected in sequence, and the heating device is respectively connected to the water inlet of the hot water nozzle and the steam inlet of the steam nozzle.

[0013] According to a cooking appliance provided by the present invention, the hot water / steam generating device further comprises:

[0014] The pressure relief valve is arranged between the water pumping device and the heating device, and the pressure relief valve is connected to the water tank via a pressure relief pipeline.

[0015] According to a cooking utensil provided by the present invention, an infrared temperature measuring head is provided in the cooking body, and the infrared temperature measuring head is connected to the controller and is used to detect the cooking temperature in the cooking body to determine the cooking stage.

[0016] According to a cooking utensil provided by the present invention, a weighing device is provided at the bottom of the cooking body, the weighing device is connected to the controller, the weighing device is used to detect the weight of cooked rice, and the controller is used to control the total amount of water injected into the hot water / steam generating device according to the detected weight of rice.

[0017] The present invention also provides a cooking appliance control method, comprising:

[0018] Get the cooking stage of the cooking appliance;

[0019] determining that the rice in the cooking utensil is in a soaking stage, and controlling a hot water / steam generating device of the cooking utensil to provide hot water into the cooking utensil;

[0020] It is determined that the rice in the cooking device is in a boiling stage, and a hot water / steam generating device of the cooking device is controlled to provide steam into the cooking device.

[0021] According to a control method of a cooking appliance provided by the present invention, the steps of determining that the rice in the cooking appliance is in a boiling stage and controlling a hot water / steam generating device of the cooking appliance to provide steam into the cooking appliance specifically include:

[0022] It is determined that the rice in the cooking device is in a boiling stage, and the hot water / steam generating device is controlled to intermittently provide steam to the cooking device at preset time intervals.

[0023] A cooking appliance control method according to the present invention further includes:

[0024] It is determined that the rice in the cooking vessel is in a gelatinization stage, and the hot water / steam generating device is controlled to provide steam into the cooking vessel.

[0025] A cooking appliance control method according to the present invention further includes:

[0026] In response to the cooking signal, obtaining the weight of rice cooked by the cooking device;

[0027] In the case where the meter weight meets the preset value, the total water injection amount, the hot water injection amount and the steam injection amount of the hot water / steam generating device are determined according to the meter weight;

[0028] Among them, the total amount of water injection and the amount of hot water injection are both positively correlated with the weight of rice.

[0029] According to a cooking appliance control method provided by the present invention, the steps of determining the total amount of water injected, the amount of hot water injected, and the amount of steam injected of the hot water / steam generating device according to the rice weight specifically include:

[0030] N 1 =K 1 M;

[0031] N 2 =K 2 M;

[0032] N 3 =N 1 -N 2 ;

[0033] Where, M is the weight per meter; N 1 is the total amount of water injected, K 1 is the total water injection coefficient; N 2 is the amount of hot water injected, K 2 is the hot water injection coefficient; N 3 is the steam injection amount;

[0034] And K 1 , K 2 Both are positively correlated with M, K 2 <K 1 .

[0035] A cooking appliance control method according to the present invention further includes:

[0036] When the rice weight does not meet a preset value, the cooking appliance is controlled to sound an alarm.

[0037] The present invention also provides a control device for a cooking appliance, comprising:

[0038] An acquisition module, used for acquiring a cooking stage of a cooking appliance;

[0039] The control module is used to determine that the rice in the cooking appliance is in a soaking stage, and control the hot water / steam generating device of the cooking appliance to provide hot water to the cooking appliance; determine that the rice in the cooking appliance is in a boiling stage, and control the hot water / steam generating device of the cooking appliance to provide steam to the cooking appliance.

[0040] The cooking utensil, control method and control device provided by the present invention can realize the two functions of hot water and steam supply by arranging a hot water / steam generating device on the cooking body, effectively simplifying the structure and reducing the cost; and in the cooking process, when the rice is in the soaking stage, hot water is provided to the cooking body by the hot water / steam generating device, which can omit the preheating stage of the traditional cooking process, so that the rice directly and quickly enters the water absorption stage, effectively shortening the cooking time; when the rice is in the boiling stage, steam is provided to the cooking body by the hot water / steam generating device, and the rice bubbles generated in the cooking process are impacted by the steam to achieve defoaming, effectively preventing the rice bubbles from overflowing, and has the characteristics of high cooking efficiency, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a schematic diagram of the structure of the cooking utensil provided by the present invention;

[0043] Figure 2 It is a structural schematic diagram of a pot cover provided by the present invention;

[0044] Figure 3 It is a structural schematic diagram of the hot water / steam generating device provided by the present invention;

[0045] Figure 4 It is a structural schematic diagram of the hot water spray head provided by the present invention;

[0046] Figure 5 It is a structural schematic diagram of the steam nozzle provided by the present invention;

[0047] Figure 6 It is one of the flow charts of the control method of the cooking appliance provided by the present invention;

[0048] Figure 7 This is the second flow chart of the control method of the cooking appliance provided by the present invention;

[0049] Figure 8This is the third flow chart of the control method of the cooking appliance provided by the present invention;

[0050] Fig. 9 It is a schematic diagram of the relationship between the water injection amount and the rice weight provided by the present invention;

[0051] Fig.10 It is a structural schematic diagram of the control device of the cooking appliance provided by the present invention.

[0052] Reference numerals:

[0053] 100: cooking body; 101: pot body; 102: pot cover; 103: inner pot;

[0054] 104: hot water nozzle; 1041: water inlet; 1042: water outlet;

[0055] 105: steam nozzle; 1051: seat body; 10511: steam inlet;

[0056] 10512: installation cavity; 1052: nozzle; 10521: steam flow channel;

[0057] 10522: steam outlet; 10523: transition channel;

[0058] 1053: valve core; 10531: reducing section; 10532: constant diameter section; 10533: connecting section;

[0059] 1054: elastic member; 1055: sealing ring; 1056: retaining ring; 106: lining;

[0060] 107: first steam discharge hole; 108: infrared temperature measuring head; 109: handle;

[0061] 200: hot water / steam generating device; 201: water tank; 202: water pumping device;

[0062] 203: heating device; 204: first pipeline; 205: second pipeline;

[0063] 206: third pipeline; 207: three-way solenoid valve; 208: pressure relief valve;

[0064] 209: pressure relief pipeline; 210: flow sensor; 211: temperature controller;

[0065] 300: acquisition module; 400: control module. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0068] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0069] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Combine the following Figure 1-Figure 10 The cooking appliance, control method and control device of the present invention are described.

[0072] According to an embodiment of the first aspect of the present invention, referring to Figure 1-Figure 3 As shown, the cooking device provided by the present invention mainly includes: a cooking body 100, a water adding device and a controller.

[0073] The cooking body 100 can cook food such as rice.

[0074] The water adding device may be a hot water / steam generating device 200. The hot water / steam generating device 200 is a functional part that can realize two functions of hot water and steam supply. The hot water / steam generating device 200 can be arranged inside or outside the cooking body 100. The hot water / steam generating device 200 can provide hot water and / or steam into the cooking body 100 to realize automatic water adding.

[0075] The controller is connected to the cooking body 100 and the hot water / steam generating device 200 respectively, and is used to control the hot water / steam generating device 200 to provide hot water into the cooking body 100 when the rice in the cooking body 100 is in the soaking stage, and to control the hot water / steam generating device 200 to provide steam into the cooking body 100 when the rice in the cooking body 100 is in the boiling stage.

[0076] Specifically, the cooking process of rice can generally be divided into a soaking stage, a preheating stage, a water absorption stage, a boiling stage, a gelatinization stage, and a heat preservation stage. When cooking rice and other foods, cooking utensils generally add cold water for soaking, and then heat the cold water to enter the preheating stage, which easily leads to a long cooking time and low cooking efficiency.

[0077] To this end, the present invention directly adds hot water during the soaking stage of the cooking process, which can omit the preheating stage of the traditional cooking process, allowing the rice to directly and quickly enter the water absorption stage, thereby effectively shortening the cooking time.

[0078] The cooking device provided in the embodiment of the present invention can realize the two functions of hot water and steam supply by arranging a hot water / steam generating device 200 on the cooking body 100, effectively simplifying the structure and reducing the cost; and during the cooking process, when the rice is in the soaking stage, hot water is provided into the cooking body 100 through the hot water / steam generating device 200, which can shorten the cooking time; when the rice is in the boiling stage, steam is provided into the cooking body 100 through the hot water / steam generating device 200, and the rice bubbles generated during the cooking process are impacted by the steam to achieve defoaming, effectively preventing the rice bubbles from overflowing, and has the characteristics of high cooking efficiency, safety and reliability.

[0079] In the related art, when a traditional electric rice cooker is cooking, due to the influence of gravity, the water in the cooker is mainly accumulated in the lower layer of the rice, which easily causes the rice to be stratified into soft and hard layers at the top and bottom, in the middle and at the outer edge, resulting in a poor taste of the rice.

[0080] To this end, when the rice in the cooking body 100 is in the gelatinization stage, the controller controls the hot water / steam generating device 200 to provide steam into the cooking body 100 .

[0081] The embodiment of the present invention replenishes water through steam during the gelatinization stage of rice, so that the humidity of the rice can be kept consistent at the top and bottom, in the middle and at the edges, thereby avoiding stratification of soft and hard rice, thereby ensuring the taste of the rice.

[0082] According to one embodiment of the present invention, referring to Figure 1 and Figure 2 As shown, the cooking body 100 mainly includes: a pot body 101, a pot cover 102 and an inner pot 103. The inner pot 103 is arranged inside the pot body 101 and is used to hold rice. An IH heater is provided at the bottom of the pot body 101 to heat the inner pot 103 for cooking. The pot cover 102 can be opened and closed on the pot body 101. When the pot cover 102 is covered on the pot body 101, the pot cover 102 and the inner pot 103 form a cooking cavity for cooking rice.

[0083] According to one embodiment of the present invention, a hot water nozzle 104 and a steam nozzle 105 are provided at the top of the cooking body 100, the steam nozzle 105 is located at the center of the cooking body 100, the hot water nozzle 104 deviates from the center of the cooking body 100, and the water outlet 1042 of the hot water nozzle 104 is located on the side wall of the hot water nozzle 104; the water inlet 1041 of the hot water nozzle 104 and the steam inlet 10511 of the steam nozzle 105 are respectively connected to the hot water / steam generating device 200.

[0084] The cooking utensil provided in the embodiment of the present invention can automatically spray hot water through the hot water nozzle 104 when the rice starts to soak during cooking, so that the rice skips the preheating stage and directly enters the water absorption stage, thereby shortening the cooking time; and during the cooking process, steam can be automatically added through the steam nozzle 105, further shortening the cooking time, thereby improving the cooking experience.

[0085] In a specific example, if Figure 2 As shown, an inner lining 106 is provided on the inner side of the pot cover 102, and a receiving cavity is provided between the inner lining 106 and the pot cover 102. The hot water / steam generating device 200 can be arranged in the receiving cavity, and the steam nozzle 105 is arranged at the center of the inner lining 106, so that the spray sprayed by the steam nozzle 105 can be evenly diffused, the defoaming ability is improved, and the soft and hard stratification of rice is reduced, thereby improving the cooking taste.

[0086] The hot water nozzle 104 is arranged offset from the center of the lining 106, that is, it is arranged close to one side wall of the inner pot 103, and the water outlet 1042 of the hot water nozzle 104 is located on the side wall of the hot water nozzle 104, facing the near wall of the inner pot 103. With this design, when the hot water nozzle 104 sprays hot water, the water flow sprayed from the water outlet 1042 can effectively impact the wall of the inner pot 103 at a close distance, and then flow down along the wall of the inner pot 103, thereby avoiding the water flow directly impacting the rice below and causing splashing, making the rice uneven, heating unevenly, and having a poor cooking taste.

[0087] According to one embodiment of the present invention, a first steam exhaust hole 107 is provided on the inner lining 106 of the pot cover 102, a steam flow path is provided in the accommodating cavity of the pot cover 102, and a second steam exhaust hole is provided on the outer side of the pot cover 102. The first steam exhaust hole 107 is connected to the second steam exhaust hole via the steam flow path for exhausting steam to maintain a stable pressure inside the cooking cavity.

[0088] In the related art, cooking utensils detect temperature through NTC temperature measuring probes, which can only detect the temperature around the probe. When rice is cooked, the probe is placed on the lid of the pot. The temperature can only be detected when the heat is gradually transferred to the lid. The temperature of the rice cannot be accurately detected, which affects the taste of the rice.

[0089] To this end, the cooking body 100 of the embodiment of the present invention is provided with an infrared temperature measuring head 108, which can be specifically arranged on the inner lining 106 of the pot cover 102. The infrared temperature measuring head 108 is connected to the controller and is used to detect the cooking temperature in the cooking body 100 to determine the cooking stage. By using the infrared temperature measuring head 108, the temperature of the rice can be detected in real time, and the temperature measurement is more accurate, thereby improving the taste of the rice.

[0090] Generally speaking, as cooking progresses, the temperature of the soaking stage, preheating stage, water absorption stage, boiling stage and gelatinization stage gradually increases, and the temperature is kept basically unchanged in the final insulation stage for insulation. Therefore, the cooking stage can be judged by detecting the cooking temperature.

[0091] According to one embodiment of the present invention, a weighing device is provided at the bottom of the pot body 101 of the cooking main body 100, and the weighing device is connected to the controller. The weighing device is used to detect the weight of the cooked rice, and the controller is used to control the total amount of water injected into the hot water / steam generating device 200 according to the detected weight of the rice. The weighing device can be a pressure sensor.

[0092] Specifically, during cooking, the whole weight M1 of the cooking utensil before adding rice and the whole weight M2 of the cooking utensil after adding rice can be detected, and the rice weight M=M2-M1.

[0093] The embodiment of the present invention detects the weight of rice through a weighing device and then automatically injects water to accurately control the rice-water ratio, thereby improving the degree of automation and the taste of the rice, and avoiding the problem of poor rice taste caused by traditional manual water addition.

[0094] According to one embodiment of the present invention, Figure 1 As shown, a rotatable handle 109 is provided on the pot body 101 to facilitate users to take and place cooking utensils.

[0095] According to one embodiment of the present invention, referring to Figure 3 As shown, the hot water / steam generating device 200 includes: a water tank 201, a pumping device 202 and a heating device 203 connected in sequence, and the heating device 203 is connected to the water inlet 1041 of the hot water nozzle 104 and the steam inlet 10511 of the steam nozzle 105 respectively.

[0096] Specifically, the water tank 201 is connected to the pumping device 202 through the first pipeline 204, the pumping device 202 is connected to the heating device 203 through the second pipeline 205, the heating device 203 is connected to the first valve port of the three-way solenoid valve 207 through the third pipeline 206, the second valve port of the three-way solenoid valve 207 is connected to the water inlet 1041 of the hot water nozzle 104, the third valve port of the three-way solenoid valve 207 is connected to the steam inlet 10511 of the steam nozzle 105, and the pumping device 202, the heating device 203 and the three-way solenoid valve 207 and other components are respectively connected to the controller.

[0097] When the hot water / steam generating device 200 is working, the water in the water tank 201 is pumped out through the pumping device 202 and sent to the heating device 203 for heating. According to cooking needs, hot water or steam is generated, and then sent to the hot water nozzle 104 or the steam nozzle 105 for spraying through the three-way solenoid valve 207.

[0098] According to one embodiment of the present invention, the hot water / steam generating device 200 further includes: a pressure relief valve 208 , which is disposed in the second pipeline 205 between the pumping device 202 and the heating device 203 , and is connected to the water tank 201 via a pressure relief pipeline 209 .

[0099] The embodiment of the present invention can play a role in protecting the waterway through the pressure relief valve 208. When the water pressure is too high, the pressure relief valve 208 opens, and part of the water can flow back from the pressure relief pipeline 209 to the water tank 201. On the one hand, it can protect the safety of the waterway, and on the other hand, it can save water and avoid external pollution.

[0100] In addition, a flow sensor 210 is provided in the first pipeline 204. The flow sensor 210 is connected to the controller. The water volume is detected by the flow sensor 210, and the water volume information is sent to the controller, so as to control the total amount of water injection.

[0101] In addition, the heating device 203 is provided with a temperature controller 211, which is connected to the controller and is used to control the heating temperature.

[0102] Therefore, the hot water / steam generating device 200 provided in the embodiment of the present invention is an integrated structure, which is compact and easy to install, and can realize both hot water and steam functions, and has the characteristics of simple structure, low cost, high reliability, etc.

[0103] According to one embodiment of the present invention, referring to Figure 4 As shown, the present invention also provides a hot water nozzle 104, and a water inlet 1041 and a water outlet 1042 are respectively provided at the upper and lower ends of the hot water nozzle 104, and the water inlet 1041 is connected to the heating device 203 via a three-way solenoid valve 207 and a third pipeline 206, and the water outlet 1042 is arranged on the side wall of the hot water nozzle 104.

[0104] Since the hot water nozzle 104 is arranged offset from the center of the inner pot 103, and the water outlet 1042 of the hot water nozzle 104 is of side design, that is, facing the near wall of the inner pot 103, with such a design, when the hot water nozzle 104 sprays hot water, the water flow sprayed from the water outlet 1042 can effectively impact the wall of the inner pot 103 at a close distance, and then flow down along the wall of the inner pot 103, thereby avoiding the water flow directly impacting the rice below and causing splashing, making the rice uneven, heating unevenly, and having a poor cooking taste.

[0105] According to one embodiment of the present invention, the inner end cross-sectional area of ​​the water outlet 1042 of the hot water nozzle 104 is smaller than the outer end cross-sectional area, and the water outlet 1042 is gradually expanded along the water outlet direction, so that the hot water is sprayed out in a fan-shaped form, which can reduce the impact force, avoid splashing on the one hand, and reduce noise on the other hand, thereby effectively improving the user experience.

[0106] According to one embodiment of the present invention, the water outlet 1042 of the hot water nozzle 104 is in the shape of an arc, and the arc angle can range from 5° to 180°, which can reduce the impact force of the sprayed water flow and make the water flow down along the wall of the inner pot 103, thereby ensuring that the rice is flat and heated evenly, and improving the cooking taste.

[0107] According to an embodiment of the present invention, the lower side wall of the hot water nozzle 104 can be evenly distributed with multiple water outlets 1042. Such a design can improve the water adding efficiency, thereby shortening the cooking time and improving the cooking efficiency.

[0108] According to one embodiment of the present invention, referring to Figure 5 As shown, the present invention further provides a steam spray head 105 , which mainly includes a seat body 1051 , a nozzle 1052 and a valve core 1053 .

[0109] Among them, the seat body 1051 is provided with a steam inlet 10511, and the steam inlet 10511 is connected to the heating device 203 via the three-way solenoid valve 207 and the third pipeline 206; the nozzle 1052 is arranged on the seat body 1051, and the nozzle 1052 is provided with a steam flow channel 10521; the valve core 1053 is movably arranged between the steam inlet 10511 and the steam flow channel 10521, and the valve core 1053 is suitable for switching between a first position and a second position. When the valve core 1053 moves to the first position, the valve core 1053 disconnects the flow path between the steam inlet 10511 and the steam flow channel 10521 and stops spraying. When the valve core 1053 moves to the second position, the valve core 1053 connects the flow path between the steam inlet 10511 and the steam flow channel 10521 to spray.

[0110] According to an embodiment of the present invention, the steam spray head 105 further includes an elastic member 1054, which is disposed in the steam flow channel 10521, and a first end of the elastic member 1054 is connected to the valve core 1053, and a second end of the elastic member 1054 is connected to the nozzle 1052. The elastic member 1054 may be a spring.

[0111] Only when the steam pressure at the steam inlet 10511 entering the steam nozzle 105 reaches a certain pressure, the valve core 1053 moves downward, squeezes the elastic part 1054, and opens the flow path. Such a design can ensure the atomization effect, improve the uniformity of steam injection, improve the defoaming ability, and reduce the soft and hard stratification of rice, thereby improving the cooking taste.

[0112] According to one embodiment of the present invention, a steam outlet 10522 is provided at one end of the steam flow channel 10521 away from the steam inlet 10511, and the inner end cross-sectional area of ​​the steam outlet 10522 is smaller than the outer end cross-sectional area, which can improve the steam diffusion, increase the contact area between the steam and the rice bubbles and the rice, improve the defoaming ability, and reduce the soft and hard stratification of the rice, thereby improving the cooking taste. For example, the steam outlet 10522 of the steam nozzle 105 can be conical, and the specific taper can be designed according to actual needs.

[0113] The steam spray head 105 provided by the present invention is described below with reference to a specific example. Figure 5 As shown, the steam spray head 105 mainly includes: a seat body 1051 , a nozzle 1052 and a valve core 1053 .

[0114] Among them, the upper and lower ends of the seat body 1051 are respectively provided with a steam inlet 10511 and an installation cavity 10512, part of the main body of the nozzle 1052 is threadedly connected in the installation cavity 10512, and a sealing ring 1055 is provided between the outer wall of the part of the main body of the nozzle 1052 and the inner wall of the installation cavity 10512 to improve the sealing performance.

[0115] The nozzle 1052 is provided with a steam flow channel 10521, a transition flow channel 10523 and a steam outlet 10522 in sequence. The cross-sectional area of ​​the steam flow channel 10521 is larger than the cross-sectional area of ​​the transition flow channel 10523. On the one hand, the injection pressure can be increased, thereby improving the atomization and diffusion effect. On the other hand, an installation step can be formed in the nozzle 1052, and a retaining spring 1056 is installed on the installation step. The upper end of the spring is connected to the valve core 1053, and the lower end of the spring is connected to the retaining spring 1056 to realize the assembly of the spring.

[0116] The valve core 1053 may be a sealing gasket, and the valve core 1053 includes: a variable diameter section 10531, a constant diameter section 10532 and a connecting section 10533. The variable diameter section 10531 gradually expands along the air intake direction, the constant diameter section 10532 is located at the bottom of the variable diameter section 10531 and can move up and down in the steam flow channel 10521 of the nozzle 1052, and a connecting section 10533 is provided at the bottom of the constant diameter section 10532, and the connecting section 10533 is connected to the upper end of the spring; and the seat body 1051 is provided with an inclined inner wall matched with the variable diameter section 10531, and a flow gap is provided between the steam flow channel 10521 of the nozzle 1052 and the constant diameter section 10532. Among them, the variable diameter section 10531 may be truncated cone-shaped.

[0117] The working principle of the steam spray head 105 of the embodiment of the present invention generally includes:

[0118] When the valve core 1053 is in the first position (initial position), the spring is in a compressed state, so that the reducing section 10531 of the valve core 1053 is in close contact with the inclined inner wall of the seat body 1051 to seal and disconnect the flow path; when the incoming steam pressure reaches a certain pressure, the spring continues to be compressed and moves to the second position. Under the action of pressure, the reducing section 10531 of the valve core 1053 is separated from the inclined inner wall of the seat body 1051, and the steam is ejected through the flow gap, steam flow channel 10521, transition flow channel 10523 and steam outlet 10522.

[0119] Therefore, the steam nozzle 105 provided in the embodiment of the present invention can prevent the outflow of low-pressure steam, ensure the steam atomization effect, improve the defoaming ability and reduce the soft and hard stratification of rice, thereby improving the cooking taste.

[0120] According to an embodiment of the second aspect of the present invention, referring to Figure 6 As shown, the present invention also provides a cooking appliance control method, which mainly includes the following steps:

[0121] S100, obtaining a cooking stage of a cooking utensil;

[0122] S200, determining that the rice in the cooking utensil is in a soaking stage, and controlling the hot water / steam generating device 200 of the cooking utensil to provide hot water into the cooking utensil;

[0123] S300: Determine that the rice in the cooking appliance is in a boiling stage, and control the hot water / steam generating device 200 of the cooking appliance to provide steam into the cooking appliance.

[0124] The control method of the cooking appliance provided by the embodiment of the present invention can effectively shorten the cooking time by providing hot water to the cooking body through the hot water / steam generating device 200 when the rice is in the soaking stage during the cooking process; and can effectively shorten the cooking time by providing steam to the cooking body through the hot water / steam generating device 200 when the rice is in the boiling stage, and utilize the steam to impact the rice bubbles generated during the cooking process to achieve defoaming, thereby effectively preventing the rice bubbles from overflowing, and has the characteristics of high cooking efficiency, safety and reliability.

[0125] According to one embodiment of the present invention, the step of determining that the rice in the cooking vessel is in a boiling stage, and controlling the hot water / steam generating device 200 of the cooking vessel to provide steam into the cooking vessel specifically includes: determining that the rice in the cooking vessel is in a boiling stage, and controlling the hot water / steam generating device to intermittently provide steam into the cooking vessel at preset time intervals.

[0126] Since the amount of steam is determined according to the weight of rice, it takes a certain amount of time for bubbles to be generated and overflow during the cooking process. If steam is continuously sprayed, insufficient steam will result. For this reason, the present invention can prevent the phenomenon that the bubbles generated subsequently during the boiling stage cannot be completely eliminated due to the premature use of steam by intermittently spraying steam, so that the steam amount can meet the defoaming requirements.

[0127] According to one embodiment of the present invention, referring to Figure 7 As shown, the control method of the cooking appliance of the present invention also includes the steps of:

[0128] S400: Determine that the rice in the cooking vessel is in the gelatinization stage, and control the hot water / steam generating device 200 to provide steam into the cooking vessel.

[0129] The embodiment of the present invention replenishes water through steam during the gelatinization stage of rice, so that the humidity of the rice can be kept consistent at the top and bottom, in the middle and at the edges, thereby avoiding stratification of soft and hard rice, thereby ensuring the taste of the rice.

[0130] According to one embodiment of the present invention, referring to Figure 8 As shown, the control method of the cooking appliance of the present invention also includes the steps of:

[0131] S001. In response to a cooking signal, obtaining the weight of rice cooked by the cooking utensil;

[0132] S002. When the weight per meter meets the preset value, determine the total amount of water injected into the hot water / steam generating device, the amount of hot water injected, and the amount of steam injected according to the weight per meter;

[0133] Among them, the total amount of water injected and the amount of hot water injected are positively correlated with the rice weight.

[0134] According to one embodiment of the present invention, the control method of the cooking appliance of the present invention further comprises the steps of:

[0135] S003. When the rice weight does not meet the preset value, the cooking appliance is controlled to sound an alarm, thereby improving safety.

[0136] For example, when a cooking signal is received, the rice weight M is first detected, and it is determined whether the rice weight M satisfies M min ≤M≤M max If the conditions are met, the total water injection amount, hot water injection amount and steam injection amount are calculated according to the preset rice-water ratio corresponding to the rice weight. If the conditions are not met, an alarm is issued to remind the user. min is the minimum amount of rice for cooking, which is generally measured by experiments and can be 0≤M min ≤50g; M max The maximum amount of rice that can be cooked, usually determined by the capacity of the cooking utensil.

[0137] According to one embodiment of the present invention, referring to Fig. 9 As shown, it shows the linear relationship between the water injection volume N and the meter weight M. The water injection volume N includes the total water injection volume N 1 、Hot water injection amount N 2 And the steam injection amount N 3 .

[0138] The steps of determining the total amount of water injected, the amount of hot water injected, and the amount of steam injected into the hot water / steam generating device according to the weight per meter specifically include:

[0139] N 1 =K 1 M;

[0140] N 2 =K 2 M;

[0141] N 3 =N 1 -N 2 ;

[0142] Where, M is the weight per meter; N 1 is the total amount of water injected, K 1 is the total water injection coefficient; N 2 is the amount of hot water injected, K 2 is the hot water injection coefficient; N 3 is the steam injection amount;

[0143] And K 1 , K 2 Both are positively correlated with M, K 2 <K 1 .

[0144] The more rice there is, the more water is injected, and accordingly, the more hot water is injected and the more steam is consumed, which can improve the defoaming ability and prevent violent boiling.

[0145] The embodiment of the present invention can calculate the total water injection amount, hot water injection amount and steam injection amount according to the preset rice-water ratio corresponding to the rice weight, thereby achieving precise control of the rice-water ratio, improving the defoaming ability and reducing the soft and hard stratification of rice, thereby improving the cooking taste.

[0146] For example, during the cooking process of the cooking utensil, the total amount of water injection, the amount of hot water injection and the amount of steam injection are first calculated according to the weight of the rice, and then hot water is sprayed through the hot water nozzle 104 to directly enter the water absorption stage. When entering the boiling stage, a part of steam is sprayed through the steam nozzle 105 to eliminate bubbles and prevent rice bubbles from overflowing. When entering the gelatinization stage, another part of steam is sprayed through the steam nozzle 105 to replenish water to avoid stratification of soft and hard rice and improve the taste of rice.

[0147] The control device of the cooking appliance provided by the present invention is described below. The control device of the cooking appliance described below and the control method of the cooking appliance described above can be referred to each other.

[0148] According to an embodiment of the third aspect of the present invention, referring to Fig.10 As shown, the present invention also provides a control device for a cooking appliance, which mainly includes: an acquisition module 300 and a control module 400. The acquisition module 300 is used to acquire the cooking stage of the cooking appliance; the control module 400 is used to determine that the rice in the cooking appliance is in the soaking stage, and control the hot water / steam generating device 200 of the cooking appliance to provide hot water to the cooking appliance; determine that the rice in the cooking appliance is in the boiling stage, and control the hot water / steam generating device 200 of the cooking appliance to provide steam to the cooking appliance.

[0149] The control device of the cooking appliance provided in the embodiment of the present invention can control the hot water / steam generating device 200 to provide hot water to the cooking body when the rice is in the soaking stage during the cooking process, so that the rice can skip the preheating stage and directly enter the water absorption stage, thereby effectively shortening the cooking time; when the rice is in the boiling stage, the control device can control the hot water / steam generating device 200 to provide steam to the cooking body, and use the steam to impact the rice bubbles generated during the cooking process to achieve defoaming, thereby effectively preventing the rice bubbles from overflowing, and has the characteristics of high cooking efficiency, safety and reliability.

[0150] According to an embodiment of the present invention, the control module is further used to determine that the rice in the cooking vessel is in the gelatinization stage, and control the hot water / steam generating device 200 to provide steam into the cooking vessel.

[0151] The control device of the cooking utensil provided in the embodiment of the present invention controls the hot water / steam generating device 200 to provide steam to replenish water in the cooking utensil when the rice is in the gelatinization stage during the cooking process. This can keep the humidity of the rice consistent at the top and bottom, in the middle and at the edges, avoid stratification of soft and hard rice, and thus ensure the taste of the rice.

[0152] Finally, it should be noted that the above embodiments 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 embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooking utensil, characterized in that: include: Cooking subject; A hot water / steam generating device, arranged on the cooking body; The controller is connected to the cooking body and the hot water / steam generating device, respectively, and is used to control the hot water / steam generating device to provide hot water to the cooking body when the rice in the cooking body is in a soaking stage, and to control the hot water / steam generating device to provide steam to the cooking body when the rice in the cooking body is in a boiling stage.

2. The cooking device according to claim 1, characterized in that: When the rice in the cooking body is in a gelatinization stage, the controller controls the hot water / steam generating device to provide steam into the cooking body.

3. The cooking device according to claim 1, characterized in that: A hot water spray head and a steam spray head are arranged on the top of the cooking body, the steam spray head is located at the center of the cooking body, the hot water spray head deviates from the center of the cooking body, and the water outlet of the hot water spray head is located on the side wall of the hot water spray head; The water inlet of the hot water spray head and the steam inlet of the steam spray head are respectively connected to the hot water / steam generating device.

4. The cooking device according to claim 3, characterized in that: The hot water / steam generating device comprises: A water tank, a water pumping device and a heating device are connected in sequence, and the heating device is respectively connected to the water inlet of the hot water nozzle and the steam inlet of the steam nozzle.

5. The cooking device according to claim 4, characterized in that: The hot water / steam generating device also includes: The pressure relief valve is arranged between the water pumping device and the heating device, and the pressure relief valve is connected to the water tank via a pressure relief pipeline.

6. The cooking device according to any one of claims 1 to 5, characterized in that: An infrared temperature measuring head is arranged in the cooking body, and the infrared temperature measuring head is connected to the controller and is used for detecting the cooking temperature in the cooking body to determine the cooking stage.

7. The cooking device according to any one of claims 1 to 5, characterized in that: A weighing device is provided at the bottom of the cooking body, and the weighing device is connected to the controller. The weighing device is used to detect the weight of the cooked rice, and the controller is used to control the total amount of water injected into the hot water / steam generating device according to the detected weight of the rice.

8. A method for controlling a cooking appliance, characterized in that: include: Get the cooking stage of the cooking appliance; determining that the rice in the cooking utensil is in a soaking stage, and controlling a hot water / steam generating device of the cooking utensil to provide hot water into the cooking utensil; It is determined that the rice in the cooking device is in a boiling stage, and a hot water / steam generating device of the cooking device is controlled to provide steam into the cooking device.

9. The cooking appliance control method according to claim 8, characterized in that: The step of determining that the rice in the cooking device is in a boiling stage and controlling the hot water / steam generating device of the cooking device to provide steam into the cooking device specifically comprises: It is determined that the rice in the cooking device is in a boiling stage, and the hot water / steam generating device is controlled to intermittently provide steam to the cooking device at preset time intervals.

10. The cooking appliance control method according to claim 8, characterized in that: Also includes: It is determined that the rice in the cooking vessel is in a gelatinization stage, and the hot water / steam generating device is controlled to provide steam into the cooking vessel.

11. The cooking appliance control method according to claim 8, characterized in that: Also includes: In response to the cooking signal, obtaining the weight of rice cooked by the cooking device; In the case where the meter weight meets the preset value, the total water injection amount, the hot water injection amount and the steam injection amount of the hot water / steam generating device are determined according to the meter weight; Among them, the total amount of water injection and the amount of hot water injection are both positively correlated with the rice weight.

12. The cooking appliance control method according to claim 11, characterized in that: The step of determining the total amount of water injected, the amount of hot water injected, and the amount of steam injected of the hot water / steam generating device according to the meter weight specifically comprises: N1=K1M; N2=K2M; N3 = N1 - N2; Wherein, M is the weight of rice; N1 is the total amount of water injected, K1 is the total amount of water injected coefficient; N2 is the amount of hot water injected, K2 is the hot water injection coefficient; N3 is the amount of steam injected; And K1 and K2 are both positively correlated with M, K2 <K1。 13. The cooking appliance control method according to claim 11, characterized in that: Also includes: When the rice weight does not meet a preset value, the cooking appliance is controlled to sound an alarm.

14. A control device for a cooking appliance, characterized in that: include: An acquisition module, used for acquiring a cooking stage of a cooking appliance; a control module, configured to determine that the rice in the cooking utensil is in a soaking stage, and control a hot water / steam generating device of the cooking utensil to provide hot water into the cooking utensil; It is determined that the rice in the cooking device is in a boiling stage, and a hot water / steam generating device of the cooking device is controlled to provide steam into the cooking device.

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