Low-temperature slow cooking machine

Abstract

The utility model discloses a low-temperature slow cooking machine which comprises a shell, a hot water outlet is formed in the outer surface of the shell, a hot water inlet is formed in the bottom surface of the shell, a circulating heating device and a control circuit board are fixedly arranged in the shell, the circulating heating device comprises a heating boiler and a circulating pump, and the heating boiler is connected with the control circuit board. A water inlet of the heating boiler is connected with the hot water inlet through a water inlet pipe, a water outlet of the heating boiler is connected with an inlet of the circulating pump through a communicating pipe, and an outlet of the circulating pump is connected with the hot water outlet through a water outlet pipe. Therefore, the heating boiler and the circulating pump are arranged in the shell of the low-temperature slow cooking machine, a sealed circulating system is formed by water circulation, the possibility of electric leakage is reduced, and safety is improved. Particularly, the circulating pump can provide larger and stable circulating flow, the efficiency is high, and the low-temperature slow-boiling water temperature in the container can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a low-temperature slow cooking machine. Background Art

[0002] A low-temperature slow cooker is a new type of kitchen appliance that cooks food slowly at low temperatures. Compared with traditional high-temperature cooking methods, a low-temperature slow cooker can cook food more gently and stably, avoiding problems such as overcooked taste and nutritional loss that may occur when food is cooked at high temperatures.

[0003] To improve the safety of low-temperature slow cookers, Chinese utility model patent CN209153047 U discloses a safe and reliable slow cooker. The heating element is mounted on a water circulation assembly. The water circulation assembly has an internal water inlet channel, and the inner wall of the heating element and the outer wall of the hollow cylinder form a water outlet channel. The heating element heats the water in the water circulation assembly. The water inlet and outlet are located at the lower end of the water circulation assembly, eliminating the need for openings in the outer shell, thus preventing short circuits in the power cord of the heating element. This solution has the following drawbacks:

[0004] First, the stirring force of the stirring device is used to drive the water into the water inlet and out of the water outlet. The hot water circulation flow is small and the efficiency is low.

[0005] Second, the stirring device is arranged above the heating element, and a sealing ring is arranged between the two for sealing. The sealing ring is prone to aging under the high temperature of long-term operation, which is prone to water leakage and malfunction. Utility Model Content

[0006] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a low-temperature slow cooking machine to solve the safety problems existing in the prior art.

[0007] To this end, the present application provides a low-temperature slow cooker, comprising a housing, a hot water outlet being provided on the outer surface of the housing, a hot water inlet being provided on the bottom surface of the housing, a circulating heating device and a control circuit board being fixedly provided in the housing, the circulating heating device comprising:

[0008] A heating boiler, wherein the water inlet of the heating boiler is connected to the hot water inlet through a water inlet pipe;

[0009] A circulation pump, wherein the water outlet of the heating boiler is connected to the inlet of the circulation pump through a connecting pipe, and the outlet of the circulation pump is connected to the hot water outlet through a water outlet pipe.

[0010] Based on the above technical solution, this application adopts a heating boiler for heating and a circulating pump for hot water circulation, forming a sealed circulation system inside the shell, reducing the possibility of leakage and increasing safety. Among them, the circulating pump can provide a larger and more stable circulation flow and high efficiency.

[0011] In the above technical solution, preferably, the circulating pump and the heating boiler are fixed to a base and a bracket, respectively, with the base fixed to the lower portion of the housing; a sleeve is provided at the center of the top surface of the base, the lower portion of the circulating pump is inserted into the sleeve and fixed therein, and a plurality of fixing posts are provided surrounding the sleeve; the bracket includes a connecting plate and a vertical plate, the connecting plate being fixed to the fixing posts, the vertical plate being vertically arranged and fixed to the top surface of the connecting plate, the heating boiler being fixed to the vertical plate, and the inlet of the circulating pump extending through the top surface of the connecting plate and connected to the water inlet of the heating boiler. In this implementation, the fixing structure of the circulating pump and the heating boiler is optimized, resulting in a compact structure and strong stability.

[0012] In the above technical solution, preferably, the vertical plate is eccentrically positioned relative to the connecting plate, a frame is provided at the outer edge of the vertical plate, and two retaining plates are provided on the inner side of the vertical plate, the two retaining plates being arranged in an upper and lower position relative to each other. The heating boiler is placed within the frame and secured thereto by the two retaining plates. This structure facilitates repair and replacement of the heating boiler, reducing maintenance costs.

[0013] In the above technical solution, preferably, a countersunk hole is provided on the bottom surface of the housing, a temperature sensor is fixedly mounted on the base, and the probe of the temperature sensor is positioned through the countersunk hole, with the lower end of the probe located above the bottom surface of the base. This approach changes the traditional design of placing the temperature sensor inside the housing, and directly detects the water temperature within the container, allowing for precise control of slow cooking of food.

[0014] In the above technical solution, preferably, the shell includes a lower shell and an upper shell, the upper shell is fixed to the top of the lower shell, the hot water outlet is arranged on the outer surface of the lower shell, the hot water inlet is arranged on the bottom surface of the lower shell, the circulation heating device is arranged in the lower shell, and the control circuit board is arranged in the upper shell.

[0015] In the above technical solution, preferably, the lower portion of the upper shell is formed by a relative combination of a first half body and a second half body. This detachable design facilitates wiring and maintenance.

[0016] In the above technical solution, preferably, two horizontally arranged struts are provided on the inner side of the first half, and two corresponding fixing holes are provided on the outer side of the upper end of the vertical plate, through which screws are passed to secure the upper end of the heating boiler to the first half. This approach allows for effective fixing of the bracket and a simple fixing structure.

[0017] In the above technical solution, preferably, a positioning ring is provided around the fixing hole, and the end of the pillar is inserted into the positioning ring. With the positioning ring structure, positioning can be performed first during assembly, which facilitates assembly.

[0018] In the above technical solution, preferably, a low water level mark and a high water level mark are provided on the outer surface of the lower shell, and the hot water outlet is located below the low water level mark.

[0019] As can be seen from the above technical solutions, the low-temperature slow cooking machine provided by the present invention solves the problem of small hot water circulation flow and low efficiency in the prior art. Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this application, the heating boiler and circulation pump are built into the housing of the slow cooker, forming a sealed water circulation system, reducing the possibility of electrical leakage and increasing safety. In particular, the circulation pump can provide a larger and more stable circulation flow rate, with high efficiency, and can ensure the temperature of the slow cooking water in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction and description of the drawings required for the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some of the embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0022] Figure 1 A schematic diagram of a low-temperature slow cooker provided by the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the low-temperature slow cooker in use;

[0024] Figure 3 This is a schematic diagram of the circulating heating device in the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the circulation heating device shown;

[0026] Figure 5This is a schematic diagram of the upper shell of the present invention after the second half is hidden;

[0027] Figure 6 This is a schematic diagram of the structure of the bracket in the utility model;

[0028] Figure 7 for Figure 6 Schematic diagram of the bracket shown looking upward. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] In order to provide a clearer explanation and description of the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0031] It should be noted that the directional words such as "inside, outside", "front, back" and "left, right" in this article are expressed based on the product usage status. Obviously, the use of the corresponding directional words does not constitute a limitation on the scope of protection of this scheme.

[0032] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a low-temperature slow cooking machine provided by the utility model. Figure 2 for Figure 1 Schematic diagram of the low-temperature slow cooker in use.

[0033] like Figure 1 、 Figure 2 As shown, the present invention provides a low-temperature slow cooker, comprising a lower shell 10 and an upper shell 20, wherein the upper shell 20 is fixed to the top of the lower shell 10. The lower shell 10 and the upper shell 20 constitute the shell in the present application, and the shell can also adopt an integrated structure.

[0034] The lower housing 10 is provided with a low water level indicator (MIN) and a high water level indicator (MAX) on its outer surface, indicating the maximum and minimum water levels within the container 30 during use. A hot water outlet 11 is also provided on its outer surface, located below the low water level indicator (MIN). A hot water inlet 12 is located on its bottom surface. A circulating heating device is housed within the lower housing 10, circulating hot water. A control circuit board is housed within the upper housing 20, controlling the operation of the circulating heating device and maintaining constant temperature circulation of hot water.

[0035] In the present application, the lower shell 10 and the upper shell 20 are both cylindrical in shape.

[0036] like Figure 2 As shown, when using the present invention, the lower housing 10 of the slow cooker is placed within a container 30. Purified water (indicated by the dashed line in the figure) is added to the container 30, with the water level being between the maximum and minimum levels. The slow cooker operates, circulating and heating the water in the container to a set temperature. Food 40 is then added for slow cooking. The slow cooker continuously circulates and heats the water in the container 30, maintaining a constant temperature between 50°C and 80°C, for example, 62°C.

[0037] like Figure 3 、 Figure 4 As shown, the circulating heating device includes a heating boiler 51 and a circulating pump 52. The heating boiler 51 is used to heat the water therein. The water inlet 511 of the heating boiler 51 is connected to the hot water inlet 12 on the bottom surface of the lower shell 10 through a water inlet pipe 512. The water outlet 513 of the heating boiler 51 is connected to the inlet of the circulating pump 52 through a connecting pipe 514. The outlet of the circulating pump 52 is connected to the hot water outlet 11 on the lower shell 10 through a water outlet pipe 515.

[0038] The circulation pump 52 is fixed to a base 53, which is fixed to the lower portion of the lower housing 10. The base 53 can be a split structure or embedded in the bottom of the inner cavity of the lower housing 10. Specifically, a sleeve 531 is provided at the center of the top surface of the base 53. The lower portion of the circulation pump 52 is inserted into the sleeve 531 and fixed. A plurality of fixing columns 532 are arranged around the sleeve 531.

[0039] The bracket 54 includes a connecting plate 541 and a vertical plate 542. The connecting plate 541 is fixed on the fixing column 532. The vertical plate 542 is vertically arranged and fixed on the top surface of the connecting plate 541. The inlet of the circulating pump 52 passes through the top surface of the connecting plate 541 and is connected to the water inlet 511 of the heating boiler 51 through the connecting pipe 512.

[0040] The vertical plate 542 is eccentrically arranged relative to the connecting plate 541. A frame 543 is provided at the outer edge of the vertical plate 542. Two clamping plates 544 are provided on the inner side of the vertical plate 542. The two clamping plates 544 are arranged opposite to each other up and down. The heating boiler 51 is placed in the frame 543 and is fixed by the two clamping plates 544.

[0041] A temperature sensor 55 is also mounted on the base 53. The probe of the temperature sensor 55 extends through a countersunk hole 13 on the bottom of the lower housing 10, with the lower end of the probe positioned above the bottom of the base 53. This prevents the probe of the temperature sensor 55 from protruding from the bottom of the lower housing 10, preventing it from colliding with and causing damage to the bottom of the container. The temperature sensor 55 is connected to a control board, which controls the heating temperature of the heating boiler 51 based on the detection signal from the temperature sensor 55.

[0042] In the present application, the heating boiler 51 is an electric heating boiler.

[0043] like Figure 1 、 Figure 5 As shown, in the present application, the lower portion of the upper shell 20 is composed of a first half body 211 and a second half body 212 which are relatively combined. One of the half bodies can be removed for wiring and repair, which is convenient for maintenance.

[0044] Two horizontally arranged struts 213 are provided on the inner side of the first half 211. Two corresponding fixing holes 516 are provided on the outer side of the upper end of the vertical plate 54. Screws pass through the fixing holes 516 to secure the upper end of the heating boiler 51 to the first half 211. A locating ring 517 is provided around the fixing holes 516, and the ends of the struts 213 are inserted into the locating ring 517. This ensures a secure and stable fixation of the heating boiler 51. Furthermore, the fixing structure is simple, making assembly easy.

[0045] Based on the description of the above specific embodiments, the low-temperature slow cooker and the low-temperature slow cooker provided by the present invention have the following advantages compared with the prior art:

[0046] First, the machine utilizes a boiler for heating and a water pump for water circulation. This eliminates the need for a water tank inside the machine, eliminating the need for water to enclose the heater. This reduces direct contact, minimizing the potential for electrical leakage in the water and increasing safety. When water and the heater are in less contact, the chance of bacterial growth is reduced, resulting in a more hygienic environment.

[0047] Second, the water tank is eliminated to reduce failures caused by water leakage, reduce the failure rate and extend the service life.

[0048] Third, the use of built-in boiler heating reduces safety requirements and makes the structure simpler, thus reducing costs.

[0049] Fourth, while achieving the same function, the structure is simpler and the heating efficiency is higher. Among them, the circulation pump can provide a larger and more stable circulation flow, with high efficiency, which can ensure the low temperature and slow cooking of water in the container.

[0050] Fifth, the built-in boiler heating makes the water temperature more uniform compared to the traditional heating tube heating method, and will not cause the water temperature to be higher next to the heating tube and lower farther away.

[0051] Finally, it should be noted that the terms "comprise," "include," or any other variations thereof, as used herein, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0052] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any structural changes with the same or similar technical solutions as the present invention fall within the scope of protection of the present invention.

Claims

1. A low-temperature slow cooker, comprising a housing, a hot water outlet on the outer surface of the housing, a hot water inlet on the bottom surface of the housing, a circulating heating device and a control circuit board fixedly disposed in the housing, characterized in that: The circulating heating device comprises: A heating boiler, wherein the water inlet of the heating boiler is connected to the hot water inlet through a water inlet pipe; A circulation pump, wherein the water outlet of the heating boiler is connected to the inlet of the circulation pump through a connecting pipe, and the outlet of the circulation pump is connected to the hot water outlet through a water outlet pipe.

2. The low temperature slow cooking machine according to claim 1, characterized in that: The circulating pump and the heating boiler are fixed on a base and a bracket respectively; the base is fixed to the lower part of the shell, a sleeve is provided at the center of the top surface of the base, the lower part of the circulating pump is inserted into the sleeve and fixed, and a plurality of fixing columns are provided around the sleeve; The bracket includes a connecting plate and a vertical plate, the connecting plate is fixed on the fixing column, the vertical plate is vertically arranged and fixed on the top surface of the connecting plate, the heating boiler is fixed on the vertical plate, and the inlet of the circulating pump passes through the top surface of the connecting plate and is connected to the water inlet of the heating boiler.

3. The low temperature slow cooking machine according to claim 2, characterized in that: The vertical plate is eccentrically arranged relative to the connecting disk, a frame is provided at the outer edge of the vertical plate, two clamping plates are provided on the inner side surface of the vertical plate, the two clamping plates are arranged opposite to each other up and down, and the heating boiler is placed in the frame and fixed by the two clamping plates.

4. The low temperature slow cooking machine according to claim 2, characterized in that: A countersunk hole is provided on the bottom surface of the shell, a temperature sensor is fixed on the base, and a probe of the temperature sensor is arranged through the countersunk hole, and the lower end of the probe of the temperature sensor is located above the bottom surface of the base.

5. The low temperature slow cooking machine according to claim 2, characterized in that: The shell includes a lower shell and an upper shell, the upper shell is fixed to the top of the lower shell, the hot water outlet is arranged on the outer surface of the lower shell, the hot water inlet is arranged on the bottom surface of the lower shell, the circulation heating device is arranged in the lower shell, and the control circuit board is arranged in the upper shell.

6. The low temperature slow cooking machine according to claim 5, characterized in that: The lower portion of the upper shell is formed by relatively combining a first half body and a second half body.

7. The low temperature slow cooking machine according to claim 6, characterized in that: Two horizontally arranged pillars are provided on the inner side surface of the first half body, and two corresponding fixing holes are provided on the outer side surface of the upper end of the vertical plate. Screws are passed through the fixing holes to fix the upper end of the heating boiler to the first half body.

8. The low temperature slow cooking machine according to claim 7, characterized in that: A positioning ring is provided around the fixing hole, and the end of the pillar is inserted into the positioning ring.

9. The low temperature slow cooking machine according to claim 5, characterized in that: A low water level mark and a high water level mark are provided on the outer surface of the lower shell, and the hot water outlet is located below the low water level mark.

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