CN113812838A

CN113812838A - Cooking utensil

Info

Publication number: CN113812838A
Application number: CN202111303358.8A
Authority: CN
Inventors: 尚凯锋; 廖四清; 曾令华; 张肃; 肖坤; 卢耀汕; 区永东; 阚望
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2021-12-21
Anticipated expiration: 2041-11-05
Also published as: CN113812838B

Abstract

The invention discloses a cooking appliance, comprising: the cooker comprises a cooker body, an inner pot, a heating device, a heat conduction ring, a water cooling assembly and a refrigerating assembly, wherein the inner pot is arranged in the cooker body; the heating device is arranged in the cooker body; the heat conduction ring is sleeved outside the inner pot and provided with a water flow channel, and the water flow channel is provided with a water outlet facing the inner pot; the water cooling assembly comprises a liquid storage tank and a first water pump, and the first water pump is used for conveying liquid in the liquid storage tank to the water flow channel; the refrigerating system comprises a first loop and a second loop which can be independently switched on and off, the first loop is provided with a first evaporator used for providing cold for the heat conducting ring, and the second loop is provided with a second evaporator used for exchanging heat with liquid of the liquid storage tank. The first evaporator provides cold energy for the inner pot through the heat conduction ring, the water cooling assembly sprays water to the outer surface of the inner pot, the temperature of the inner pot can be reduced, the overload operation of a refrigeration system is avoided, and the reliability of the refrigeration system is improved.

Description

Cooking utensil

Technical Field

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

Background

In the related art, many cooking appliances do not have a cooling function. On the one hand, if need cool down after the culinary art is accomplished, then need put into the refrigerator with food or drink, and the interior pot temperature after the culinary art is higher, and it is more troublesome again to trade other splendid attire utensils, needs the refrigerated function of rapid cooling under this scene. On the other hand, when the reserved cooking function is used, the reserved time can be over 12 hours generally, and in hot summer, food placed in an electric cooker or a pressure cooker is easy to deteriorate and decay, the nutritional value and the taste are influenced, and even the food is not suitable for eating, and the refrigeration and preservation functions are needed in the scene. The existing cooking utensil with the refrigerating function has poor heat exchange effect and low refrigerating efficiency.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the cooking utensil provided by the invention has a refrigeration function, can enhance the heat exchange effect and improves the refrigeration efficiency.

A cooking appliance according to an embodiment of a first aspect of the present invention includes: the cooker comprises a cooker body, an inner pot, a heating device, a heat conduction ring, a water cooling assembly and a refrigerating assembly, wherein the inner pot is arranged in the cooker body; the heating device is arranged in the cooker body and used for heating the inner pot; the heat conduction ring is arranged above the heating device and sleeved outside the inner pot, and is provided with a water flow channel which is provided with a water outlet facing the inner pot; the water cooling assembly comprises a liquid storage tank and a first water pump, and the first water pump is used for conveying liquid in the liquid storage tank to the water flow channel; the refrigeration system comprises a first loop and a second loop which can be independently switched on and off, the first loop is provided with a first evaporator used for providing cold for the heat conduction ring, and the second loop is provided with a second evaporator used for exchanging heat with the liquid of the liquid storage tank.

According to the cooking utensil provided by the embodiment of the invention, at least the following beneficial effects are achieved: the first evaporator provides cold energy for the inner pot through the heat conduction ring, the water cooling assembly sprays water to the outer surface of the inner pot, the temperature of the inner pot can be quickly reduced, the overload operation of a refrigerating system is avoided, and the reliability of the refrigerating system is improved. And moreover, the second evaporator exchanges heat with the liquid of the water cooling assembly, so that the heat exchange efficiency can be accelerated.

According to some embodiments of the invention, the refrigeration system further comprises a compressor, a first on-off valve, a second on-off valve, a first throttling device, a second throttling device and a condenser, wherein the inlet of the first evaporator and the inlet of the second evaporator are both communicated with the outlet of the condenser, the first throttling device is arranged on a pipeline between the inlet of the first evaporator and the outlet of the condenser, and the second throttling device is arranged on a pipeline between the inlet of the second evaporator and the outlet of the condenser; the outlet of the first evaporator and the outlet of the second evaporator are communicated with the air suction port of the compressor, the first on-off valve is arranged on a pipeline between the outlet of the first evaporator and the air suction port of the compressor, and the second on-off valve is arranged on a pipeline between the outlet of the second evaporator and the air suction port of the compressor.

According to some embodiments of the invention, the compressor is a single-cylinder double suction compressor, the outlet of the first evaporator is communicated with the first suction port of the single-cylinder double suction compressor, and the outlet of the second evaporator is communicated with the second suction port of the single-cylinder double suction compressor.

According to some embodiments of the present invention, the compressor is a two-cylinder independent suction compressor with at least one cylinder being unloaded, and the outlet of the first evaporator and the outlet of the second evaporator are respectively communicated with the suction ports of the two cylinders.

According to some embodiments of the invention, the second evaporator is disposed outside the tank, the second evaporator being a liquid-to-liquid heat exchanger water cooled heat exchanger.

According to some embodiments of the invention, the second evaporator is disposed within the tank, the second evaporator being a liquid-to-liquid surface heat exchanger.

According to some embodiments of the invention, the reservoir is provided with an insulation layer.

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

According to some embodiments of the invention, the water cooling assembly comprises a second water pump, and the second water pump is arranged on the water return pipeline.

According to some embodiments of the invention, the cooking appliance further comprises a fan, 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.

According to some embodiments of the invention, the first evaporator is provided on an outer side surface of the heat transfer ring or is composed of an inner refrigerant channel of the heat transfer ring.

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 a cooking appliance according to a first embodiment of the invention;

FIG. 2 is a schematic view of the assembly of the inner pan, heating device and heat conducting ring shown in FIG. 1;

FIG. 3 is a cross-sectional view of the heating apparatus shown in FIG. 2;

FIG. 4 is a top view of the heat transfer ring shown in FIG. 2;

FIG. 5 is a schematic view of an embodiment of the heat transfer ring shown in FIG. 2;

FIG. 6 is a schematic view of another embodiment of the thermally conductive ring shown in FIG. 2;

FIG. 7 is a schematic view of another embodiment of the thermally conductive ring shown in FIG. 2;

FIG. 8 is a schematic view of another embodiment of the thermally conductive ring shown in FIG. 2;

fig. 9 is a schematic view of a cooking appliance according to a second embodiment of the present invention;

fig. 10 is a schematic view of a cooking appliance according to a third embodiment of the present invention;

fig. 11 is a schematic view of a cooking appliance according to a fourth embodiment of the present invention.

Reference numerals:

101. a pot body; 102. an inner pot; 103. a heating device; 104. a heat conducting ring; 105. a liquid storage tank; 106. a first water pump; 107. a water supply pipeline; 108. a water return pipe; 109. a compressor; 110. a condenser; 111. a first evaporator; 112. a first throttling device; 113. a second evaporator; 114. a second throttling device; 115. a first on-off valve; 116. a second on-off valve; 117. a fan; 118. an air inlet; 119. an air outlet; 120. a second water pump;

201. a water flow channel; 202. a water inlet; 203. a water outlet; 204. a liquid collecting part; 205. a water collecting port;

301. a temperature sensor;

501. a diversion trench;

701. a first flow passage; 702. a second flow passage;

901. a first air intake port; 902. a second air inlet.

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 heat 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 volumetric refrigeration scheme generally adopts the structures of a compressor, a condenser, an evaporator, a four-way valve, a one-way valve capillary tube assembly and the like, and enables the evaporator to be close to an inner pot of the electric cooker so as to transfer cold energy.

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 refrigeration assembly has the problems of oil cracking and the like. 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 11, how the cooking appliance of the present invention solves the above-mentioned problems will be described.

Referring to fig. 1, a cooking appliance according to a first embodiment of the present invention includes: the pot comprises a pot body 101, an inner pot 102, a heating device 103, a heat conduction ring 104, a water cooling assembly and a refrigerating 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, it can be appreciated that the heating device 103 is positioned 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.

Referring to fig. 1, it can be understood that the water cooling assembly includes a liquid storage tank 105, a first water pump 106 and a water supply pipeline 107, and the liquid storage tank 105, the first water pump 106 and the water supply pipeline 107 are all disposed in the pot body 101. The first water pump 106 may be disposed outside the tank 105 and serves to feed the liquid in the tank 105 to the water supply pipe 107. Of course, in other embodiments, the first water pump 106 is disposed in the tank 105, and the liquid in the tank 105 can be pumped as well.

In addition, the heat conduction ring 104 is disposed above the heating device 103, and the heat conduction ring 104 is sleeved outside the inner pot 102, the heat conduction ring 104 is provided with a water flow channel 201, wherein, as shown in fig. 2, it can be understood that the water flow channel 201 is provided with a water inlet 202 and a water outlet 203, the water inlet 202 is located at the upper portion of the heat conduction ring 104, the water outlet 203 is disposed towards the inner pot 102, the liquid flowing out from the water supply pipeline 107 is conveyed into the water flow channel 201 through the water inlet 202, and flows to the outer surface of the inner pot 102 from the water outlet 203, so that the cold energy is transmitted to the inner pot 102, and then the food in the inner pot 102 is cooled, thereby playing a role of rapid cooling. Namely, the water cooling assembly is used for providing water flow to the water flow channel 201 to cool the inner pot 102 by water cooling.

Meanwhile, as the liquid is directly contacted with the outer surface of 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 and the inner pan 102 in the related technology is solved.

Referring to fig. 1 and 2, it can be understood that the water cooling assembly further comprises a liquid collecting part 204, the liquid collecting part 204 is located below the inner pot 102 and is used for receiving liquid sprayed by the liquid spraying piece to prevent the environment in the pot body 101 from being polluted, and meanwhile, the liquid collecting part 204 is provided with a water collecting port 205 communicated with the liquid storage tank 105. Specifically, the water cooling assembly further includes a water return pipe 108, one end of the water return pipe 108 is communicated with the liquid storage tank 105, and the other end of the water return pipe 108 is communicated with a water collection port 205 of the liquid collection portion 204.

The first water pump 106 conveys the liquid in the liquid storage tank 105 to the heat conducting ring 104 through the water supply pipeline 107, the liquid is sprayed to the outer wall surface of the inner pot 102 along the water flow channel 201 and then flows downwards to enter the liquid collecting part 204, then flows out from the water collecting port 205 of the liquid collecting part 204 and flows back to the liquid storage tank 105 through the water return pipeline 108, the circulation of the liquid is completed, the utilization rate of the liquid is improved, the frequency of supplementing the liquid is reduced, and the energy-saving and environment-friendly effects are achieved.

Although the water return pipe 108 is provided, there may still be a problem of insufficient water return power, as shown in fig. 1, it can be understood that the water cooling assembly according to the embodiment of the present invention further includes a second water pump 120, and the second water pump 120 is provided on the water return pipe 108, and if the water return power is insufficient, the second water pump 120 may be started to assist water return.

It is understood that the liquid collecting part 204 may be a part belonging to the heating device 103, i.e. a part where the heating device 103 itself is formed with a groove shape. Referring to fig. 3, it will be appreciated that the heating device 103 is a substantially hemispherical bowl-like structure that allows a volume of water to be stored within the heating device 103. The central axis of the heating device 103 is provided with a boss with a certain height, and the boss is provided with a temperature sensor 301 for detecting the temperature of the inner pot 102. The bottom of the heating unit 103 is provided with a drain tank and a drain port (i.e., a water collection port 205), which allows water in the heating unit 103 to be easily drained. 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 trap 204 may be provided as a separate element in the heating device 103.

It will be appreciated that the liquid storage tank 105 may be configured to be removably connected to the body 101, i.e., the liquid storage tank 105 may be removed from the side or from above the body 101, and then the liquid storage tank 105 may be removed for refilling, facilitating the operation.

The liquid in the tank 105 may be water or other non-toxic liquid.

Referring to fig. 1, it can be understood that the refrigeration system includes a compressor 109, a condenser 110, a first evaporator 111, a second evaporator 113, a first on-off valve 115, a second on-off valve 116, a first throttling device 112, and a second throttling device 114 connected to each other, and the compressor 109, the condenser 110, the first throttling device 112, the first evaporator 111, and the first on-off valve 115 are connected in sequence to form a first circuit. The compressor 109, the condenser 110, the second throttling device 114, the second evaporator 113, and the second cut-off valve 116 are sequentially connected to form a second loop, that is, the first evaporator 111 and the second evaporator 113 are arranged in parallel, so that the first evaporator 111 and the second evaporator 113 can respectively and independently operate without affecting each other, and both can also simultaneously operate.

Specifically, the first throttling device 112 is disposed on a pipeline between an inlet of the first evaporator 111 and an outlet of the condenser 110, and the second throttling device 114 is disposed on a pipeline between an inlet of the second evaporator 113 and an outlet of the condenser 110, so that the condensate from the condenser 110 is further depressurized and cooled to become a low-temperature and low-pressure liquid refrigerant, and then enters the first evaporator 111 and the second evaporator 113, respectively. The common throttling devices include a manual throttling valve, a floating ball throttling valve, a thermal expansion valve or a capillary tube and the like.

The first on-off valve 115 is arranged on a pipeline between the outlet of the first evaporator 111 and the suction port of the compressor 109, the second on-off valve 116 is arranged on a pipeline between the outlet of the second evaporator 113 and the suction port of the compressor 109, namely, the first on-off valve 115 is arranged on a first return pipe, and the second on-off valve 116 is arranged on a second return pipe, and is used for respectively controlling the on-off of the first loop and the second loop, so that the first evaporator 111 and the second evaporator 113 work independently or simultaneously.

It should be noted that the first on-off valve 115 may be disposed at other positions of the first circuit, as long as the on-off of the first circuit can be controlled and the normal operation of the second circuit is not affected. For example, the first on-off valve 115 may be disposed on a pipe between an inlet of the first evaporator 111 and an outlet of the condenser 110. Similarly, the second cut-off valve 116 may be disposed at other positions of the second circuit.

The first evaporator 111 is used for providing cold energy for the heat conduction ring 104, so as to refrigerate the inner pot 102, and can cool the inner pot 102 or realize refrigeration and fresh keeping. And the second evaporator 113 is disposed in the liquid storage tank 105, and is configured to exchange heat with the liquid in the liquid storage tank 105, so that the temperature of the liquid in the liquid storage tank 105 is lowered, and the cooling efficiency of the water cooling assembly is improved. The second evaporator 113 may be a coil, a bent pipe, or other heat exchanger, or other micro heat exchanger, and is a heat exchanger in which the media of the main circulation (inner circulation) and the auxiliary circulation (outer circulation) are both liquid, that is, a liquid-liquid surface heat exchanger.

It will be appreciated that the second evaporator 113 may also be located outside of the tank 105, in contact with the tank 105 for heat transfer. For example, the second evaporator 113 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 105 in a large area, thereby achieving heat exchange.

It is understood that the refrigeration system may further include two compressors 109 and two condensers 110 to form two completely independent circulation systems to control the refrigeration functions of the first evaporator 111 and the second evaporator 113.

The cooking utensil provided by the embodiment of the invention has multiple practical functions, for example, the water cooling component can be only opened, the refrigerating system can be closed, and water cooling is independently carried out through the water cooling component.

The water cooling assembly and the first loop of the refrigeration system can be opened, so that the water cooling assembly and the first evaporator 111 cool the inner pan 102 at the same time, the temperature of the inner pan 102 can be rapidly reduced in a water cooling mode through the combination of the water cooling assembly and the refrigeration system, the refrigeration system does not need to be cooled for a long time, the overload operation of the compressor 109 is avoided, and the reliability of the refrigeration system is improved. Moreover, a water film is formed between the inner pan 102 and the heat conduction ring 104 to fill the air gap between the inner pan 102 and the heat conduction ring 104, so that the heat exchange effect can be enhanced, and the refrigeration efficiency is improved.

The water cooling assembly can also be turned on and the second loop of the refrigeration system opened. Because the second evaporator 113 is not in contact with the inner pan 102 and is not sleeved on the periphery of the inner pan 102, the cold energy generated by the second evaporator 113 has little influence on the inner pan 102. Furthermore, when the heating device 103 heats the food in the inner pan 102, the second loop of the refrigeration system can be simultaneously opened, the heating influence on the food is small, the cold energy can be stored in the liquid storage tank 105, after the heating is finished and the refrigeration is needed, the water cooling assembly is opened, the cooled liquid is conveyed to the heat conduction ring 104 through the first water pump 106, the liquid is sprayed to the outer wall surface of the inner pan 102 along the water flow channel 201, the food in the inner pan 102 is immediately cooled down quickly, and the refrigeration and the freshness preservation of the food are realized. Therefore, the cooking appliance of the embodiment of the invention improves the cooling capacity for the water cooling assembly through the refrigerating system, and then sprays the cooled liquid to the inner pot 102 through the water cooling assembly, 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 users is reduced.

The water cooling assembly can be started and the first loop and the second loop of the refrigeration system can be opened. In the process of heating food, a second loop of the refrigerating system is firstly opened, and cold energy can be stored in the liquid storage tank 105; after heating and when refrigeration is needed, the water cooling assembly is started to carry out water cooling; the first loop of the refrigeration system is opened, the water cooling assembly is matched, the water film formed between the inner pan 102 and the heat conducting ring 104 is utilized to fill the air gap between the inner pan 102 and the heat conducting ring 104, the heat exchange effect can be enhanced, and therefore the refrigeration efficiency is improved.

It should be noted that the above functions are only used for exemplary illustration, and are not to be construed as a limitation to the cooking appliance of the embodiment of the present invention, and other functions may be developed according to the need, and in the above exemplary functions, the working sequence of each component may also be adjusted according to the actual situation to accomplish different control methods.

It will be appreciated that the outer surface of the tank 105 may be provided with an insulating layer to reduce heat loss from the liquid in the tank 105, reduce energy consumption of the refrigeration system, save energy, and reduce the operating time of the refrigeration system, i.e., reduce the operating time of the compressor 109.

Referring to fig. 1, it can be understood that the cooking appliance further includes a blower 117, the pot body 101 is provided with an air inlet 118, an air outlet 119 and an air duct, the air duct is provided inside the pot body 101, the air inlet 118 is provided at a side of the pot body 101, the air outlet 119 is located below the condenser 110, the air duct of the pot body 101 communicates with the air inlet 118 and the air outlet 119, the blower 117 and the condenser 110 are provided in the air duct, and the blower 117 is mounted at a lower portion of the cooking appliance. The air inlet 118 is used as an inlet for cooling air, so that the cooling air can enter the air duct from the air inlet 118 and flow along the air duct, when passing through the condenser 110, the heat of the condenser 110 is taken away, the heat exchange of the condenser 110 is accelerated, and the hot air obtained after the heat exchange is driven by the fan 117 is discharged from the air outlet 119.

It is understood that in other embodiments, the air outlet 119 may be disposed at the side of the pot body 101, and the air inlet 118 may be disposed below the condenser 110.

Referring to fig. 2, it will be appreciated that the first evaporator 111 includes an evaporator coil, the interior of the heat transfer ring 104 forming the conduit of the evaporator coil, i.e., the evaporator coil is disposed within the interior of the heat transfer ring 104, the evaporator coil being comprised of the internal refrigerant passages of the heat transfer ring 104. Through the design of integral type for cooking utensil's whole more convenient assembly does not need to make the body of evaporator coil alone moreover, and whole manufacturing cost is lower, and is bigger with refrigerant and heat-conducting ring 104's heat transfer area, and the heat transfer is more abundant, thereby improves heat exchange efficiency.

It is understood that the first evaporator 111 may also be disposed outside the heat conductive ring 104 in contact with the heat conductive ring 104 for heat transfer. For example, the first evaporator 111 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 outer side of the heat conduction ring 104 in a large area, so as to achieve heat exchange.

Referring to fig. 4 and 5, it can be understood that the water inlet 202 may be disposed at an upper portion of the heat conducting ring 104, the water flow channel 201 is annular, and a plurality of water outlets 203 are disposed on the water flow channel 201, and the plurality of water outlets 203 are communicated with the water flow channel 201 and disposed along a circumferential direction of the inner pot 102. For example, the number of the water outlets 203 is set to be greater than or equal to 6, the water outlets 203 are arranged in the height range of the upper part 1/4 of the inner pot 102, and the plurality of water outlets 203 are arranged in the circumferential direction around the inner pot 102, so that the sprayed liquid can cool more area of the inner pot 102, the cooling efficiency is improved, and the cooling is more uniform.

Referring to fig. 6, it can be understood that, based on the solution shown in fig. 5, the inner side wall of the heat conduction ring 104 is provided with a diversion trench 501, the diversion trench 501 is located on one side of the heat conduction ring 104 close to the inner pan 102, the diversion trench 501 is located below the water outlet 203, and one end of the diversion trench 501 is communicated with the water outlet 203. Namely, below each water outlet 203, the inner wall of the heat-conducting ring 104 is provided with a flow guide groove 501 from top to bottom along the vertical direction, the flow guide groove 501 is groove-shaped, the width of the flow guide groove 501 is not more than the width or diameter of the water outlet 203, and the depth of the flow guide groove 501 is less than the distance between the outer wall of the evaporator coil and the inner wall of the heat-conducting ring 104. Through setting up guiding gutter 501, the liquid of being convenient for can flow down from top to bottom, then moves to guiding gutter 501's both sides under the capillary action to form the water film, thereby can increase the area that forms the water film between pot 102 and the heat conduction ring 104 in, further reduce the air gap between pot 102 and the heat conduction ring 104 in, further strengthen the heat transfer, improve refrigeration efficiency.

Referring to FIG. 7, it is to be understood that the water inlet 202 may also be disposed at a lower portion of the heat conductive ring 104. The water flow channel 201 includes a first flow channel 701 and a second flow channel 702, the first flow channel 701 is a straight line segment and is arranged along the up-down direction, that is, along the axial direction of the heat conduction ring 104, and the water inlet 202 is located at the lower end of the first flow channel 701. The second flow channel 702 is an annular segment and is arranged along the axial direction of the heat conduction ring 104, the second flow channel 702 is arranged at the upper part of the heat conduction ring 104, and the water outlet 203 of the water flow channel 201 is communicated with the second flow channel 702.

Referring to fig. 7, it can be understood that, by arranging the water inlet 202 at the lower part of the heat conduction ring 104 and making the solution flow upwards along the first flow passage 701, and during the flow of the first flow passage 701, the solution passes through the multiple turns of the evaporator coil, so that the solution can exchange heat with the refrigerant in the evaporator coil, the temperature of the solution flowing out from the water outlet 203 is lower, the cooling rate is increased after the solution contacts with the outer surface of the inner pan 102, and the cooling effect is enhanced.

Referring to fig. 8, it can be understood that, based on the scheme shown in fig. 7, the inner side wall of the heat conduction ring 104 is provided with the flow guide groove 501, the flow guide groove 501 and the first flow channel 701 are respectively arranged on two opposite sides of the evaporator coil, and the flow guide groove 501 not only enables the solution to migrate to two sides of the flow guide groove 501, so as to form a water film, thereby increasing the area of the water film formed between the inner pan 102 and the heat conduction ring 104, further reducing the air gap between the inner pan 102 and the heat conduction ring 104, but also can quickly transfer the cold energy of the evaporator coil to the inner pan 102, further enhancing heat exchange, and improving the refrigeration efficiency.

Referring to fig. 9, it can be understood that, compared with the solution of the first embodiment, the cooking appliance of the second embodiment of the present invention is mainly different in that the compressor 109 adopted by the refrigeration system is a single-cylinder double-suction compressor. An outlet of the first evaporator 111 communicates with the first suction port 901 of the compressor 109, an outlet of the second evaporator 113 communicates with the second suction port 902 of the compressor 109, the first on-off valve 115 is provided on a corresponding pipe between the outlet of the first evaporator 111 and the first suction port 901 of the compressor 109, and the second on-off valve 116 is provided on a corresponding pipe between the outlet of the second evaporator 113 and the second suction port 902 of the compressor 109.

Referring to fig. 10, it can be understood that the cooking appliance of the third embodiment of the present invention is different from the first embodiment in that the refrigeration system uses a compressor 109 which is a two-cylinder independent suction compressor with a cylinder capable of unloading, and a detachable gas cylinder is used to replace the function of the on-off valve. The refrigerant outlet of the first evaporator 111 communicates with the suction port of the compressor 109, and the refrigerant outlet of the second evaporator 113 communicates with the other suction port of the compressor 109. Of course, the positions of the first evaporator 111 and the second evaporator 113 communicating with the suction port of the compressor 109 may be interchanged, or both cylinders may be unloaded.

It will be appreciated that by unloading the de-loadable cylinders, keeping only the second evaporator 113 solely cooling the tank 105, allows the food to be prepared with a certain amount of chilled water before the cooling starts. After the food cooking is finished, the unloadable air cylinder is opened to load the food, so that the first evaporator 111 and the second evaporator 113 are cooled simultaneously. The first water pump 106 and the second water pump 120 are started simultaneously, so that the chilled water of the liquid storage tank 105 passes through the water flow channel 201 of the heat conduction ring 104, and is sprayed to the joint surface gap between the inner pot 102 and the first evaporator 111, on one hand, the inner pot 102 is directly cooled by the chilled water, on the other hand, the chilled water forms a water film in the joint surface gap between the inner pot 102 and the first evaporator 111, an air layer in the gap is filled, the heat exchange effect between the first evaporator 111 and the inner pot 102 is enhanced, and the quick refrigeration effect is realized.

Referring to fig. 11, it can be understood that the cooking appliance according to the fourth embodiment of the present invention is different from the first embodiment mainly in that the second evaporator 113 used in the refrigeration system is a liquid-liquid type heat exchanger, such as a micro plate heat exchanger. The liquid-liquid type heat exchanger is provided with a first heat exchange channel (not shown in the figure) and a second heat exchange channel (not shown in the figure), the first heat exchange channel and the second heat exchange channel realize heat exchange, the first heat exchange channel is communicated with the compressor 109 and the condenser 110, and the second heat exchange channel is communicated with the liquid storage tank 105.

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;

the heat conduction ring is arranged above the heating device and sleeved outside the inner pot, and is provided with a water flow channel which is provided with a water outlet facing the inner pot;

the water cooling assembly comprises a liquid storage tank and a first water pump, and the first water pump is used for conveying liquid in the liquid storage tank to the water flow channel;

the refrigeration system comprises a first loop and a second loop which can be independently switched on and off, wherein the first loop is provided with a first evaporator used for providing cold for the heat conduction ring, and the second loop is provided with a second evaporator used for exchanging heat with liquid of the liquid storage tank.

2. The cooking appliance of claim 1, wherein the refrigeration system further comprises a compressor, a first on-off valve, a second on-off valve, a first throttling device, a second throttling device, and a condenser, wherein the inlet of the first evaporator and the inlet of the second evaporator are both in communication with the outlet of the condenser, the first throttling device is disposed in the conduit between the inlet of the first evaporator and the outlet of the condenser, and the second throttling device is disposed in the conduit between the inlet of the second evaporator and the outlet of the condenser; the outlet of the first evaporator and the outlet of the second evaporator are communicated with the air suction port of the compressor, the first on-off valve is arranged on a pipeline between the outlet of the first evaporator and the air suction port of the compressor, and the second on-off valve is arranged on a pipeline between the outlet of the second evaporator and the air suction port of the compressor.

3. The cooking appliance of claim 2, wherein the compressor is a single cylinder dual suction compressor, the outlet of the first evaporator is in communication with the first suction port of the single cylinder dual suction compressor, and the outlet of the second evaporator is in communication with the second suction port of the single cylinder dual suction compressor.

4. The cooking appliance of claim 2, wherein said compressor is a two-cylinder independent suction compressor having at least one cylinder which is unloadable, and wherein the outlet of said first evaporator and the outlet of said second evaporator are in communication with the suction ports of said two cylinders, respectively.

5. The cooking appliance of claim 1, wherein the second evaporator is disposed outside of the tank, the second evaporator being a liquid-to-liquid heat exchanger.

6. The cooking appliance of claim 1, wherein the second evaporator is disposed within the tank, the second evaporator being a liquid-to-liquid surface heat exchanger.

7. The cooking appliance of claim 1, wherein the reservoir is provided with an insulating layer.

8. The cooking appliance according to claim 1, wherein the water cooling assembly further comprises a liquid collecting part for receiving liquid, the liquid collecting part is located below the inner pot, the liquid collecting part is provided with a water collecting opening, and the water collecting opening is communicated with the liquid storage tank through a water return pipeline.

9. The cooking appliance according to claim 8, wherein the water cooling assembly comprises a second water pump, and the second water pump is arranged on the water return pipeline.

10. The cooking appliance according to claim 2, 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.

11. The cooking appliance of claim 1, wherein the first evaporator is disposed on an outer side surface of the heat conductive ring or is comprised of an inner refrigerant channel of the heat conductive ring.