CN113331669A

CN113331669A - Cooking utensil

Info

Publication number: CN113331669A
Application number: CN202110637092.4A
Authority: CN
Inventors: 曾令华; 廖四清; 尚凯锋; 张肃; 肖坤
Original assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-09-03

Abstract

The invention discloses a cooking appliance, which comprises a cooker body, an inner pot, a heating device, a refrigerating system and a cooling system, wherein the cooker body is provided with a cooking cavity; the inner pot is arranged in the pot body; the heating device is arranged in the cooker body and used for heating the inner pot; the cooling system comprises a liquid storage box, a first liquid pump and a liquid spraying part, liquid in the liquid storage box exchanges heat with the refrigeration system, the first liquid pump is used for conveying liquid in the liquid storage box to the liquid spraying part, and the liquid spraying part is used for spraying the liquid to the outer side wall of the inner pot. The cooling system is used for providing cooling capacity, the cooling system is used for spraying cooling liquid to the inner pot, cooling is achieved, the heating and refrigerating processes can be carried out simultaneously, the whole cooking process is shortened, the waiting time of a user is reduced, and meanwhile the cooling system is used for cooling the inner pot. No air gap is formed between the inner pot and the refrigerated liquid, and the heat exchange efficiency is improved.

Description

Cooking utensil

Technical Field

The invention relates to the technical field of household appliances, in particular to a cooking appliance.

Background

In the related art, many cooking appliances have no refrigeration function, and the electric cooker can reduce the sugar degree of rice after being added with the refrigeration function and is used for preparing ice-feeling mung bean paste and the like. The cooking utensil with the refrigerating function can start to refrigerate only after the food is heated, so that the final time consumption is long. In addition, the inner pot is a movable part which can be taken out, namely the inner pot and the evaporator can be separated, so that an air gap exists between the inner pot and the evaporator, poor heat exchange is caused, and the heat exchange efficiency is improved.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a cooking appliance which can shorten the whole cooking process, reduce the waiting time of a user and improve the heat exchange efficiency.

The cooking appliance comprises a cooker body, an inner pot, a heating device, a refrigerating system and a cooling system; the inner pot is arranged in the pot body; the heating device is arranged in the cooker body and used for heating the inner pot; the cooling system comprises a liquid storage box, a first liquid pump and a liquid spraying part, liquid in the liquid storage box exchanges heat with the refrigeration system, the first liquid pump is used for conveying liquid in the liquid storage box to the liquid spraying part, and the liquid spraying part is used for spraying the liquid to the outer side wall of the inner pot.

According to the cooking utensil provided by the embodiment of the invention, at least the following beneficial effects are achieved: the cooling system is used for providing cooling capacity, and then the cooling system is used for spraying cooling liquid to the inner pot, so that cooling is realized, the heating and refrigerating processes can be carried out simultaneously, the whole cooking process is shortened, and the waiting time of a user is reduced. Meanwhile, no air gap is formed between the inner pot and the refrigerated liquid, so that the heat exchange efficiency is improved.

According to some embodiments of the invention, the cooling system further comprises a liquid collecting part for receiving liquid, the liquid collecting part is positioned below the inner pot, and the liquid collecting part is provided with a water collecting opening communicated with the liquid storage tank.

According to the cooking appliance provided by the embodiment of the invention, the refrigerating system comprises the compressor, the condenser and the evaporator which are communicated with each other, and the evaporator provides cold energy for the liquid storage box.

According to the cooking appliance provided by the embodiment of the invention, the evaporator is provided with the first heat exchange channel and the second heat exchange channel, the first heat exchange channel and the second heat exchange channel realize heat exchange, the first heat exchange channel is communicated with the refrigerating system, the second heat exchange channel is communicated with the liquid storage box, the cooling system comprises the second liquid pump, and the second liquid pump is used for conveying liquid in the liquid storage box to the second heat exchange channel.

According to the cooking appliance provided by the embodiment of the invention, the second liquid pump is a submersible pump and is arranged in the liquid storage tank.

According to the cooking appliance provided by the embodiment of the invention, the cooking appliance further comprises a fan, the cooker body is provided with an air duct, an air inlet and an air outlet, the air duct is communicated with the air inlet and the air outlet, and the fan and the condenser are arranged in the air duct.

According to the cooking appliance, at least part of the evaporator is positioned in the liquid storage box.

According to the cooking utensil provided by the embodiment of the invention, the liquid storage box is provided with the water inlet, and the evaporator is positioned beside the water inlet.

According to the cooking appliance provided by the embodiment of the invention, the cooking appliance further comprises a magnetic isolation plate, and the magnetic isolation plate is arranged between the heating device and the compressor.

According to the cooking utensil of the embodiment of the invention, the liquid spraying part is provided with the liquid spraying opening, and the ratio of the flow cross-sectional area of the water collecting opening to the flow cross-sectional area of the liquid spraying opening is greater than or equal to 5.

According to the cooking appliance provided by the embodiment of the invention, the liquid storage box is provided with the water inlet, the first liquid pump is a submersible pump, and the first liquid pump is arranged at the bottom of the liquid storage box and is arranged on one side of the liquid storage box far away from the water inlet.

According to the cooking utensil provided by the embodiment of the invention, the liquid spraying part is a sleeve ring arranged on the outer side of the inner pot, the sleeve ring is provided with an annular channel and a plurality of liquid spraying ports, the annular channel is communicated with the liquid storage tank, and the plurality of liquid spraying ports are communicated with the annular channel and are arranged along the circumferential direction of the inner pot.

According to the cooking appliance provided by the embodiment of the invention, the cooling system comprises a stirring mechanism, and the stirring mechanism is arranged in the liquid storage tank.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic view of some embodiments of a cooking appliance according to embodiments of the present invention;

FIG. 2 is a schematic view of further embodiments of a cooking appliance according to embodiments of the present invention;

FIG. 3 is a schematic view showing the connection of the liquid collecting part, the inner pan and the liquid ejecting member according to the embodiment of the present invention;

FIG. 4 is a schematic view of FIG. 3 with the inner pan omitted;

FIG. 5 is a schematic view of the structure of the liquid ejecting member shown in FIG. 3;

FIG. 6 is a bottom view of the spray member shown in FIG. 5;

fig. 7 is a sectional view a-a shown in fig. 6.

Reference numerals:

101. a pot body; 102. an inner pot; 103. a heating device; 104. a compressor; 105. a condenser; 106. an evaporator; 107. a throttling device; 108. a liquid storage tank; 109. a first liquid pump; 110. a liquid spraying member; 111. a fan; 112. an air inlet; 113. an air outlet; 114. a liquid collecting part; 115. a first connecting pipe; 116. a second connecting pipe; 117. a water inlet;

201. a plate heat exchanger; 202. a second liquid pump;

301. a water collecting port; 302. a collar; 303. an annular channel; 304. a water collecting tank; 305. a drainage channel;

401. a liquid spraying port; 402. a flow guiding rib;

501. an annular body; 502. an annular projection; 503. a water inlet part; 504. a communicating portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The cooking utensil refers to a device capable of converting electric energy into heat energy, such as an electric cooker, a pressure cooker and the like.

Electric rice cookers, also known as electric cookers and electric rice cookers. The electric cooker converts electric energy into heat energy, has various operation functions of steaming, boiling, stewing and the like on food, and is convenient to use, safe and reliable. The multifunctional cooking machine can cook food, can preserve heat, is clean and sanitary to use, has no pollution, saves time and labor, and is one of indispensable tools for modernization of housework.

Pressure cookers are also called pressure cookers and pressure cookers, and are also cookers for converting electric energy into internal energy. The physical phenomenon that the boiling point of liquid under higher air pressure can be improved is utilized to exert pressure on water, so that the water can reach higher temperature without boiling, and the efficiency of stewing food is accelerated.

In order to make the cooking utensil have the function of cold storage and fresh keeping, in the related art, some cooking utensils have a refrigerating device arranged in a pot body, the refrigerating device adopts a semiconductor refrigerating scheme, and the semiconductor refrigerating is a solid refrigerating mode and is realized by directly transferring heat in the movement of holes and electrons. The working principle of semiconductor refrigeration is based on the peltier effect. The semiconductor thermocouple is composed of an N-type semiconductor and a P-type semiconductor. The N-type semiconductor has excess electrons and a negative temperature difference potential. The P-type semiconductor has insufficient electrons and has positive temperature difference potential; when electrons travel from the P-type to the N-type through the junction, the temperature of the junction decreases, the energy thereof necessarily increases, and the increased energy corresponds to the energy consumed by the junction. Conversely, as electrons flow from the N-type to the P-type material, the temperature of the junction increases. Because the semiconductor refrigeration has no mechanical rotating part, no refrigerant is needed, no noise, no pollution, high reliability, long service life, reverse heating by current, easy constant temperature control and the like, the prior cooking utensil adopts more technical schemes of semiconductor refrigeration.

However, the refrigerating capacity of the semiconductor refrigeration is relatively small, and if the scheme of the semiconductor refrigeration is used for the cooking appliances such as the electric rice cooker, the temperature is reduced from high temperature, the cooling time is long, and the practicability is not high. Accordingly, in the related art, a volume type cooling scheme is used in a cooking appliance such as an electric cooker. The positive displacement refrigeration scheme generally adopts the structures such as a compressor, a condenser, an evaporator, a four-way valve, a one-way valve capillary tube assembly and the like.

The refrigeration working process is as follows: the compressor compresses refrigerant into high-temperature high-pressure liquid, the high-temperature high-pressure liquid is sent to the condenser to release heat, the high-temperature high-pressure liquid is subjected to pressure reduction and throttling through the expansion valve (capillary tube), the high-temperature high-pressure liquid enters the evaporator, the high-temperature high-pressure liquid is evaporated and absorbed in the evaporator to become superheated steam, the superheated steam returns to the compressor, the cold energy of the evaporator is transferred to the inner pot of the cooking utensil, and the reciprocating circulation is carried out, so that the purpose of cooling food in the inner pot is achieved.

In the related art, the solution of the positive displacement refrigeration has a plurality of problems to be solved. For example, on one hand, the evaporator is in close contact with the inner pot of the electric cooker, and the inner pot can generate high temperature during cooking (especially in a coil electromagnetic heating mode), and the high temperature is transmitted to the evaporator, so that the oil product cracking and other problems occur in a refrigeration system. On the other hand, because interior pot can load and unload, and the lateral wall of interior pot is vertical upwards to extend from the bottom of a boiler, consequently, has the air gap between interior pot and the evaporimeter, causes the heat transfer effect poor, and refrigeration efficiency is low.

Meanwhile, both the semiconductor refrigeration scheme and the volumetric refrigeration scheme need to wait until the food is heated, so that the refrigeration can be started, and the final time consumption is long.

Referring to fig. 1 to 7, a cooking appliance according to an embodiment of the present invention will be described to solve the above-described problems.

Referring to fig. 1 and 2, a cooking appliance of an embodiment of the present invention includes a pot body 101, an inner pot 102, a heating device 103, a refrigerating system, and a cooling system.

The inner pot 102 is used for loading food and is disposed inside the pot body 101. The heating device 103 is arranged in the pot body 101 and used for heating the inner pot 102. Referring to fig. 1 to 2, it can be appreciated that the heating device 103 is located below the inner pan 102 to facilitate heating of the bottom of the inner pan 102. It should be noted that the heating device 103 may also be located at the side of the inner pot 102 to facilitate heating the sidewall of the inner pot 102; or the heating device 103 is in a semi-surrounding structure and simultaneously heats the bottom and the side wall of the inner pot 102.

It is understood that the heating device 103 may be an electric hot plate. The electric heating plate is an aluminum alloy disc with an embedded power generation heat pipe, the inner pot 102 is placed on the electric heating plate, heat is generated by electrifying the electric heating plate and then is transmitted to the inner pot 102, the electric heating plate directly heats the inner pot 102 for placing food, and the electric heating plate is high in efficiency, time-saving and power-saving.

It can be understood that heating device 103 can also be an electromagnetic coil, and the metal inner container of the pot body is directly surrounded by three-dimensional heating by switching on alternating current through the electromagnetic coil, so that the speed is higher, and the food heating is more uniform.

The refrigeration system comprises a compressor 104, a condenser 105, an evaporator 106 and a throttling device 107 which are communicated with each other; the cooling system comprises a liquid storage box 108, a first liquid pump 109 and a liquid spraying part 110, the liquid storage box 108 is used for exchanging heat with the cooling system, the first liquid pump 109 is used for conveying liquid in the liquid storage box 108 to the liquid spraying part 110, the liquid spraying part 110 is used for spraying the liquid to the outer side wall of the inner pot 102, therefore, cold energy is transmitted to the inner pot 102, food in the inner pot 102 is cooled, the effect of quickly cooling down is achieved, the cooling system continuously keeps refrigeration, and refrigeration and freshness preservation of the food can be achieved.

It should be noted that the refrigeration system may also use a semiconductor refrigeration method to provide cooling energy to the liquid storage box 108.

In the related art, the evaporator 106 is in contact with or relatively close to the inner pan 102, and the heating process of food is affected by simultaneously starting the refrigeration system during heating, so that the refrigeration system must be started after heating is completed, the time required by the whole cooking process is prolonged, a user needs to wait for a longer time, the power consumption is high, and the user experience is poor.

In the cooking appliance of the embodiment of the present invention, the evaporator 106 of the refrigeration system is not in contact with the inner pan 102, and is not sleeved on the outer periphery of the inner pan 102, so that the influence of the cold energy generated by the evaporator 106 on the inner pan 102 is small. Furthermore, when the heating device 103 heats the food in the inner pot 102, the refrigeration system can be simultaneously started, the heating influence on the food is small, the cold energy can be stored in the liquid storage tank 108, after the heating is finished and the refrigeration is needed, the cooling system is started, the cooled liquid is conveyed to the liquid spraying part 110 through the first liquid pump 109, the cooled liquid is sprayed out to the outer side wall of the inner pot 102, the food in the inner pot 102 is immediately cooled down and cooled down rapidly, and the refrigeration and the fresh keeping of the food are realized.

Therefore, the cooking appliance of the embodiment of the invention provides the cooling capacity for the cooling system through the refrigerating system, and then sprays the cooling liquid to the inner pot 102 through the cooling system, so that the processes of cooling, heating and refrigerating can be simultaneously carried out, the whole cooking process is shortened, and the waiting time of a user is reduced.

Meanwhile, as the cooling liquid directly contacts with the inner pan 102, the heat transfer effect is greatly improved, and the problem of poor heat transfer caused by the air gap between the evaporator 106 and the inner pan 102 in the related art is solved.

It should be noted that the liquid in the liquid storage tank 108 may be water, or may be other non-toxic liquid. The liquid in the liquid tank 108 is set as a coolant in the following description.

It is understood that the liquid storage tank 108 may be provided with a liquid injection port and a liquid discharge port, and the cooking appliance may output the liquid level information to the user through a screen or a visual liquid level meter. And divides the maximum level and the minimum level, and the user can fill the liquid storage tank 108 with the cooling liquid or discharge the cooling liquid after knowing the liquid levels.

Since cooking appliances such as electric cookers are small home appliances and have a small internal space, a refrigeration system must be designed in a compact size.

It is understood that the compressor 104 may be selected as the rotary rotor compressor 104 because the rotary compressor 104 has a simple structure and facilitates a compact design. Specifically, the motor of the compressor 104 does not need to convert the rotation of the rotor into the reciprocating motion of the piston, but directly drives the rotary piston to rotate to complete the compression of the refrigerant. Because the piston rotates, the compression work is smooth, stable and balanced. In addition, the rotary air compressor has no clearance volume and no interference of re-expansion gas, so that the rotary air compressor has the advantages of high compression efficiency, few parts, small volume, light weight, good balance performance, low noise, complete protection measures, low power consumption and the like.

It is understood that the compressor 104 may alternatively be a horizontal compressor 104. Because the vertical compressor 104 is high, the horizontal compressor 104 can reduce the height occupied space.

It will be appreciated that the condenser 105 may alternatively be a microchannel heat exchanger, which has a smaller volume and may have a greater amount of heat exchange at the same volume than a tube and fin heat exchanger. The micro-channel heat exchanger is a heat exchanger with the channel equivalent diameter of 10-1000 mu m. The heat exchanger has tens of fine flow channels in the flat tube, and the fine flow channels are connected to the circular headers at both ends of the flat tube. The header is internally provided with a baffle plate to divide the heat exchanger flow passage into a plurality of flows. Compared with the conventional heat exchanger, the micro-channel heat exchanger is small in size, large in heat exchange coefficient, high in heat exchange efficiency, capable of meeting higher energy efficiency standards, excellent in pressure resistance, capable of refrigerating by using CO2 as a working medium and meeting the requirement of environmental protection.

It will be appreciated that the restriction device 107 may alternatively be a capillary tube or a restriction spool, which has the advantages of low cost, small footprint, etc. The capillary tube generally refers to a thin tube having an inner diameter of 1 mm or less, and is called a capillary tube because the tube diameter is thin like hair. The throttling short pipe is a thin pipe section with the length and the inner diameter ratio of 3-20 and the inner diameter of less than 2mm, and is a constant-section throttling element like a capillary. The method has the advantages of low cost, high reliability, easy maintenance and replacement, no need of an inspection valve additionally arranged for judging the flow direction of the refrigerant in a heat pump system, and the like.

It is understood that the material of the evaporator 106 may be a metal material such as aluminum or copper having good thermal conductivity. Aluminum or copper has good thermal conductivity but poor magnetic conductivity. Because part cooking utensil adopts the electromagnetic heating mode, and the heating device 103 of cooking utensil is provided with electromagnetic heating coil, and the material of evaporimeter 106 uses aluminium or copper, can make evaporimeter 106 keep good heat transfer performance simultaneously, avoids producing induction current and produces the induction heating effect, avoids evaporimeter 106 to receive the influence of high temperature, the oil cracking scheduling problem appears.

It can be understood that the cooking utensil further comprises a magnetic isolation plate (not shown in the figure), the magnetic isolation plate is located between the heating device 103 and the compressor 104, and the area of the magnetic isolation plate is enough to shield the whole heating device 103 and isolate an electromagnetic vortex generated by an electromagnetic coil in the heating device 103, so that the compressor 104 and other components are prevented from generating an induction heating effect and being heated and damaged. For example, the magnetic shield may be disposed 1cm to 3cm below the heating device 103. The magnetic shield may also be disposed at an upper portion or a side portion of the compressor 104.

It will be appreciated that the first liquid pump 109 is a submersible pump and is disposed in the tank 108. The first liquid pump 109 is disposed in the liquid storage tank 108, so that the additional occupied space can be reduced.

It will be appreciated that the cooling system includes a stirring mechanism (not shown) disposed in the liquid storage tank 108, which can stir the liquid in the liquid storage tank 108, thereby reducing the temperature difference between the liquid in different positions of the liquid storage tank 108, and thus increasing the heat exchange capacity of the evaporator 106.

Referring to fig. 1, it will be appreciated that the evaporator 106 is disposed in the tank 108 and that at least a portion of the evaporator 106 is located in the liquid in the tank 108. The cold quantity at the refrigerant side of the evaporator 106 can be efficiently transmitted to the liquid, so that the cooling liquid can be efficiently prepared, the cooling liquid can be prepared during the cooking of food, and the time is saved. Meanwhile, the evaporator 106 is immersed in the liquid storage box 108, so that the extra occupied space of the evaporator 106 is reduced, the whole occupied space of the cooking appliance is reduced, and the miniaturization design is realized.

It will be appreciated that the evaporator 106 may also be disposed outside of the tank 108 in contact with the tank 108 for heat transfer. For example, the evaporator 106 is one of a circular tube type heat exchanger coil, a square tube type heat exchanger coil, or a microchannel flat tube, and is wound or attached to the outside of the liquid storage tank 108 in a large area, thereby achieving heat exchange.

It is understood that the evaporator 106 is provided with a first heat exchange channel and a second heat exchange channel, the first heat exchange channel and the second heat exchange channel realize heat exchange, the first heat exchange channel is communicated with the refrigeration system, the second heat exchange channel is communicated with the liquid storage box 108, the cooling system comprises a second liquid pump 202, and the second liquid pump 202 is used for conveying the liquid in the liquid storage box 108 to the second heat exchange channel.

For example, referring to fig. 2, it will be appreciated that the evaporator 106 includes a plate heat exchanger 201. The plate heat exchanger 201 is a high efficiency heat exchanger formed by stacking a series of corrugated metal sheets. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger 201 is an ideal device for exchanging heat between liquid and liquid, and between liquid and gas. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Under the condition of the same pressure loss, the heat transfer coefficient of the heat exchanger is 3-5 times higher than that of the tubular heat exchanger, the occupied area of the heat exchanger is one third of that of the tubular heat exchanger, and the heat recovery rate can reach more than 90 percent.

Referring to fig. 2, it can be understood that the plate heat exchanger 201 is provided with a first port, a second port, a third port and a fourth port, the first port is communicated with the throttling device 107, and the second port is communicated with the compressor 104 to realize refrigerant circulation. The third interface communicates with the tank 108, the fourth interface communicates with a second liquid pump 202, and the second liquid pump 202 is configured to convey liquid in the tank 108 to the plate heat exchanger 201. The liquid in the liquid storage tank 108 and the refrigerant of the refrigeration system realize heat exchange in the plate heat exchanger 201, the cold energy of the refrigeration system is transferred to the liquid in the liquid storage tank 108, and then the first liquid pump 109 conveys the cooled liquid in the liquid storage tank 108 to the cooling pipe to cool the food in the inner pot 102.

It will be appreciated that the second liquid pump 202 is a submersible pump and is disposed in the tank 108. The second liquid pump 202 is disposed in the liquid storage tank 108, so that the additional occupied space can be reduced.

Referring to fig. 1 and 2, it can be understood that the cooking appliance further includes a fan 111, the pot body 101 is provided with an air inlet 112, an air outlet 113 and an air duct, the air duct is arranged inside the pot body 101, the air outlet 113 is arranged at the side of the pot body 101, the air inlet 112 is located below the condenser 105, the air duct of the pot body 101 is communicated with the air inlet 112 and the air outlet 113, and the fan 111 and the condenser 105 are arranged in the air duct. The air inlet 112 is used as an inlet of cooling air, so that the cooling air can enter the air duct from the air inlet 112 and flow along the air duct, when passing through the condenser 105, the heat of the condenser 105 is taken away, the heat exchange of the condenser 105 is accelerated, and hot air obtained after the heat exchange is driven by the fan 111 is discharged from the air outlet 113.

Referring to fig. 1 and 2, it can be understood that the cooling system further includes a liquid collecting part 114, the liquid collecting part 114 is located below the inner pot 102 and is used for receiving the liquid sprayed from the liquid spraying piece 110 and preventing the environment in the pot body 101 from being polluted, and meanwhile, referring to fig. 3, the liquid collecting part 114 is provided with a water collecting port 301 communicated with the liquid storage tank 108.

Specifically, the cooling system further includes a first connection pipe 115 and a second connection pipe 116, one end of the first connection pipe 115 is communicated with the first liquid pump 109, the other end of the first connection pipe 115 is communicated with the liquid spraying member 110, one end of the second connection pipe 116 is communicated with the liquid storage tank 108, and the other end of the second connection pipe 116 is communicated with the water collection port 301 of the liquid collection portion 114.

The first liquid pump 109 conveys the cooling liquid in the liquid storage tank 108 to the liquid spraying part 110 through the first connecting pipe 115, the cooling liquid flows downwards after being sprayed to the outer wall surface of the inner pot 102, enters the liquid collecting part 114, flows out from the water collecting port 301 of the liquid collecting part 114 and flows back to the liquid storage tank 108 through the second connecting pipe 116, the circulation of the cooling liquid is completed, the utilization rate of the cooling liquid is improved, the frequency of supplementing the cooling liquid is reduced, the cold carried by the cooling liquid is recycled, and the energy-saving and environment-friendly effects are achieved.

It will be appreciated that the liquid trap 114 may be part of the heating means 103, i.e. the heating means 103 itself is formed with a trough-shaped portion. The liquid collecting portion 114 may be provided as a separate member on the heating device 103. Of course, the waterproof structure provided on the heating device 103 is well known to those skilled in the art and will not be described herein.

The liquid collecting unit 114 may collect the collected coolant by a structure such as a funnel, and may not necessarily pass through the second connection pipe 116.

Referring to fig. 1, it can be understood that the reservoir 108 is provided with a water inlet 117, and the water inlet 117 is communicated with the second connection pipe 116, i.e., the recovered cooling liquid is introduced into the reservoir 108 through the water inlet 117. The evaporator 106 is located within the tank 108 and the evaporator 106 is located adjacent to the inlet 117. Therefore, the cooling liquid flowing in from the water inlet 117 passes through the evaporator 106 or flows by the evaporator 106, so that the evaporator 106 can exchange heat with the recovered cooling liquid, and the cooling speed of the cooling liquid is increased.

Referring to fig. 1, it will be appreciated that the first liquid pump 109 is a submersible pump, the water inlet 117 is disposed at the top of the tank 108, the first liquid pump 109 is disposed at the bottom of the tank 108, and the first liquid pump 109 is disposed at a side of the tank 108 remote from the water inlet 117. The water inlet 117 is provided at the top of the tank 108, and the first liquid pump 109 is provided at the bottom of the tank 108 such that the distance between the first liquid pump 109 and the water inlet 117 in the height direction (i.e., the up-down direction shown in fig. 1) is maximized. The first liquid pump 109 is disposed on a side of the tank 108 away from the water inlet 117, for example, in fig. 1, the water inlet 117 is disposed at a position on the far left side of the tank 108, and the first liquid pump 109 is disposed at a position on the right side of the tank 108, so that the distance between the first liquid pump 109 and the water inlet 117 in the left-right direction in fig. 1 is maximized.

Therefore, through setting up water inlet 117 at the top of liquid reserve tank 108, first liquid pump 109 sets up in the bottom of liquid reserve tank 108, and first liquid pump 109 sets up the one side of keeping away from water inlet 117 at liquid reserve tank 108, make first liquid pump 109 and water inlet 117's distance the biggest, and then make the coolant liquid flow in from water inlet 117, to being pumped away by first liquid pump 109, the longest distance has been passed through, make obtaining abundant heat transfer of coolant liquid, guaranteed to satisfy the demands from hydrojet 110 spun coolant liquid temperature, improve heat exchange efficiency.

Referring to fig. 3 to 7, it can be understood that the spray member 110 may be provided as a collar 302, the collar 302 being disposed outside the inner pan 102, and the collar 302 being provided with an annular channel 303 and a plurality of spray ports 401, the annular channel 303 communicating with the reservoir 108, the plurality of spray ports 401 communicating with the annular channel 303 and being disposed along the circumferential direction of the inner pan 102. For example, the number of the liquid ejecting ports 401 is set to be 6 or more, the liquid ejecting ports 401 are arranged in the height range of the upper portion 1/4 of the inner pot 102, and the plurality of liquid ejecting ports 401 are arranged in the circumferential direction around the inner container.

It is understood that liquid ejection member 110 may be provided as a nozzle.

The cooling liquid in the liquid storage tank 108 enters the annular channel 303 and is sprayed out from the plurality of liquid spraying ports 401, and due to the fact that the plurality of liquid spraying ports are arranged along the circumferential direction of the inner pot 102, more areas of the inner pot 102 can be cooled by the sprayed cooling liquid, and meanwhile, the cooling is more uniform.

It will be appreciated that the flow of liquid down from the water collection opening 301 is dependent solely on gravity, and that bubbles tend to form at the water collection opening 301, creating resistance. By setting the flow cross-sectional area of the water collection port 301 to be equal to or larger than the sum of the flow cross-sectional areas of the plurality of liquid discharge ports 401, it is possible to ensure that the coolant flows out smoothly from the water collection port 301. Experiments prove that the ratio of the flow cross-sectional area of the water collecting port 301 to the flow cross-sectional area of the liquid spraying ports 401 is greater than or equal to 5, namely the flow cross-sectional area of the water collecting port 301 is more than 5 times of the sum of the flow cross-sectional areas of all the liquid spraying ports 401, so that the water return efficiency can be remarkably improved, the liquid is prevented from accumulating and overflowing, and the liquid in the liquid storage tank 108 is prevented from being insufficient.

Referring to fig. 4, it can be understood that a plurality of flow guiding ribs 402 are disposed on the circumferential wall of the liquid collecting portion 114, the plurality of flow guiding ribs 402 are disposed along the circumferential direction of the inner pan 102, and a flow guiding channel is formed between two adjacent flow guiding ribs 402, and guides the falling coolant to flow along a predetermined direction and collect towards the water collecting port 301, so as to flow back into the liquid storage tank 108 more intensively.

Referring to fig. 3 and 4, it can be understood that a water collection groove 304 is provided at the bottom of the liquid collection part 114, and the water collection groove 304 is annular, so that the cooling liquid flowing from the side wall surface of the inner pan 102 is collected in the water collection groove 304, and then flows out from the water collection port 301 to return to the reservoir 108. Through setting up catchment groove 304, can be so that the coolant liquid of collection more concentrate, improve recycle rate, the coolant liquid gets back to in the liquid reserve tank 108 with the velocity of flow faster simultaneously.

Referring to fig. 3 and 4, it can be understood that the bottom of the liquid collecting part 114 is further provided with a drain channel 305, the water collecting port 301 is communicated with the drain channel 305, and the drain channel 305 is obliquely provided. The inclined arrangement allows the coolant to be guided to flow out more largely than the horizontal arrangement, and reduces the coolant remaining in the sump portion 114.

Referring to fig. 5 to 7, it can be understood that the collar 302 includes an annular body 501, an annular protrusion 502 is provided on the annular body 501, the annular protrusion 502 protrudes from the annular body 501 toward the inner side of the annular body 501, and the annular channel 303 and the plurality of liquid ejection ports 401 are provided on the annular protrusion 502. It can be understood that, in order to provide the annular channel 303, the collar 302 needs to have a sufficient thickness, and by providing the annular channel 303 on the annular protrusion 502, only the portion where the annular protrusion 502 is located can be thickened, and not all thickening is needed, so that the material is saved and the cost is reduced. The plurality of liquid spray ports 401 are arranged on the annular protrusion 502, and the annular protrusion 502 protrudes out of the annular body 501 towards the inner side of the annular body 501, so that the liquid spray ports 401 are closer to the inner pot 102, and the loss of cooling liquid is reduced.

Referring to fig. 5, it can be understood that the collar 302 further includes a water inlet portion 503 and a communicating portion 504, the water inlet portion 503 is provided with a water inlet channel, the communicating portion 504 is provided with a communicating channel, the water inlet channel is communicated with the liquid storage tank 108 through the first connecting pipe 115, and the communicating channel is communicated with the water inlet channel and the annular channel 303. The first liquid pump 109 delivers the cooling liquid to the water inlet channel, enters the annular channel 303 after passing through the communication channel, flows along the annular channel 303, delivers the cooling liquid to each liquid jet port 401, and finally jets the cooling liquid to the inner pan 102.

The use method of the cooking appliance according to the embodiment of the invention is described below with the user preparing ice-feeling green bean paste with an electric cooker.

When the electric cooker starts to heat the mung bean paste, the compressor 104 is started to prepare cold water, the compressor 104 is not closed until the water temperature reaches 5 ℃, the liquid storage tank 108 is prevented from being broken by freezing water, the first liquid pump 109 is closed in the process, and all water is reserved in the liquid storage tank 108. And the agitation mechanism is turned on, reducing the temperature difference of the water at different locations in the reservoir 108.

After the mung bean paste is heated, the first liquid pump 109 and the compressor 104 are started to operate, cooling water in the liquid storage tank 108 is conveyed to the liquid spraying part 110 by the first liquid pump 109, the cooling water is sprayed to the outer wall surface of the inner pot 102 to cool the inner pot 102, and the temperature of the mung bean paste is gradually cooled. In this process, the cold energy on the refrigerant side of the evaporator 106 is transferred to the water, which is then transferred to the mung bean paste in the inner pot 102. The refrigeration system is turned off until the temperature sensor of the electric cooker detects that the temperature of the inner pot 102 is lower than 18 ℃. The ice-feeling mung bean paste is manufactured, and due to the high refrigerating efficiency, the refrigerating time consumption can be greatly reduced (more than 30 minutes can be reduced compared with a scheme that the evaporator 106 is directly wound around the inner pot 102), the waiting time of a user is reduced, the power consumption is saved, and the user experience is better.

The above usage is merely for illustration, and steps, steps sequence, parameters and the like can be adjusted according to actual situations, and are not to be construed as limiting the scope of the present invention.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Cooking appliance, characterized in that it comprises:

a pot body;

the inner pot is arranged in the pot body;

the heating device is arranged in the cooker body and used for heating the inner pot;

a refrigeration system;

cooling system, cooling system includes liquid reserve tank, first liquid pump and hydrojet spare, the liquid of liquid reserve tank with the refrigerating system heat transfer, first liquid pump be used for with liquid in the liquid reserve tank is carried hydrojet spare, hydrojet spare is used for spouting liquid extremely the lateral wall of interior pot.

2. The cooking appliance of claim 1, wherein the cooling system further comprises a liquid collection portion for receiving liquid, the liquid collection portion being located below the inner pan, the liquid collection portion being provided with a water collection port communicating with the liquid storage tank.

3. The cooking appliance according to claim 1 or 2, wherein the refrigeration system comprises a compressor, a condenser and an evaporator in communication with each other, the evaporator providing refrigeration to the reservoir.

4. The cooking appliance of claim 3, wherein the evaporator is provided with a first heat exchange channel and a second heat exchange channel, the first heat exchange channel and the second heat exchange channel are in heat exchange, the first heat exchange channel is in communication with the refrigeration system, the second heat exchange channel is in communication with the tank, and the cooling system comprises a second liquid pump for delivering liquid in the tank to the second heat exchange channel.

5. The cooking appliance of claim 4, wherein the second liquid pump is a submersible pump and is disposed in the reservoir tank.

6. The cooking appliance according to claim 3, further comprising a fan, wherein the pot body is provided with an air duct, an air inlet and an air outlet, the air duct is communicated with the air inlet and the air outlet, and the fan and the condenser are arranged in the air duct.

7. The cooking appliance of claim 3, wherein at least a portion of the evaporator is located in the liquid of the reservoir.

8. The cooking appliance of claim 7, wherein the reservoir is provided with a water inlet and the evaporator is located adjacent the water inlet.

9. The cooking appliance of claim 3, further comprising a magnetic shield disposed between the heating device and the compressor.

10. The cooking appliance according to claim 2, wherein said spouting member is provided with a spouting port, and a ratio of a flow cross-sectional area of said water collecting port to a flow cross-sectional area of said spouting port is 5 or more.

11. The cooking appliance of claim 1, wherein the reservoir is provided with a water inlet, the first liquid pump is a submersible pump, and the first liquid pump is provided at a bottom of the reservoir and on a side of the reservoir remote from the water inlet.

12. The cooking utensil of claim 1 wherein the liquid spray member is a collar disposed outside the inner pan, the collar having an annular channel and a plurality of liquid spray ports, the annular channel communicating with the liquid storage tank and the plurality of liquid spray ports communicating with the annular channel and disposed circumferentially of the inner pan.

13. The cooking appliance of claim 1, wherein the cooling system includes a stirring mechanism disposed in the tank.