Pet feeder

Abstract

SOLUTION: To provide a pet feeding tool comprising: a housing; a food tray; a food cover; and a drive mechanism, in which, in the housing, there are provided a thermal conductive sheet, a temperature adjusting structure and a heat sink, the temperature adjusting structure includes a semiconductor cooling sheet and a control module, the semiconductor cooling sheet comprises first and second surfaces which face each other, the first surface being connected to the thermal conductive sheet, the second surface adhering to the heat sink, the control module being used for controlling cooling or heating of the first surface of the semiconductor cooling sheet, the food tray being connected into the housing and being connected to the thermal conductive sheet, the food tray having at least two food putting openings, the food cover being attached to an upper part of the food tray, the food tray having a window hole connected to the food putting openings, the drive mechanism being used for driving and rotating the food cover or the food tray.EFFECT: A pet feeding tool comprises a simplified structure, in which temperature control can be relatively precisely performed, and by rotation of a food cover of the tool, selective feeding can be achieved.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the technical field of pet supplies, and more particularly to pet feeders. [Background technology]

[0002] Pet feeders have become a common item for feeding pets, and with the constant development of pet food, the variety of pet food is also increasing. Pet food is mainly divided into two types: wet food and dry food. Due to the economy and convenience of dry food, most pets currently eat dry food. However, feeding dry food for extended periods of time can lead to pets becoming underhydrated, which is detrimental to their health. Therefore, feeding wet food can provide pets with more comprehensive nutrition, and sufficient hydration is also beneficial to their health. However, because wet food is prone to deterioration, storing wet food in a feeder for long periods of time is a concern for many pet owners.

[0003] Currently available feeders typically use frozen blue ice to keep wet food fresh, but this method only lasts a short time. On the one hand, the blue ice must be frozen and then removed and placed back into the feeder every day, making operation cumbersome and requiring significant maintenance time. On the other hand, the use of frozen blue ice can easily cause localized low temperatures in some wet foods, and if the temperature is too low, it can easily cause indigestion, diarrhea, flatulence, and other problems in pets. Summary of the Invention [Problem to be solved by the invention]

[0004] The purpose of the embodiments of the present invention is to provide a pet feeder that solves the technical problems of conventional feeders that use frozen blue ice to maintain freshness, which makes operation cumbersome and makes it easy for the temperature of some wet foods to become too low. [Means for solving the problem]

[0005] In order to achieve the above object, the technical means adopted by the present invention comprises a housing, a food tray, a food cover, and a drive mechanism, a thermally conductive sheet, a temperature adjustment structure, and a heat sink are provided within the housing, the temperature adjustment structure includes a semiconductor cooling sheet and a control module, the semiconductor cooling sheet has a first surface and a second surface arranged opposite to each other, the first surface is connected to the thermally conductive sheet, and the second surface is closely attached to the heat sink, and the control module is used to control the cooling or heating of the first surface of the semiconductor cooling sheet; the food tray is connected to the inside of the housing and to the thermally conductive sheet, the food tray is provided with at least two food containers, and each of the food containers is used to place an item to be kept fresh; The food cover is placed over the food tray, and the food tray is provided with a window communicating with the food container, The object of the present invention is to provide a pet feeder in which the drive mechanism is provided within the housing, and the drive end of the drive mechanism is connected to the food tray, or the drive end of the drive mechanism is connected to the food cover.

[0006] Preferably, the control module comprises: a driver chip electrically connected to the semiconductor cooling sheet; a controller electrically connected to the driving chip and controlling the forward and reverse conduction of the semiconductor cooling sheet by the driving chip; a power source electrically connected to the driver chip.

[0007] Preferably, the thermally conductive sheet, the semiconductor cooling sheet, and the heat sink are located on the same plane.

[0008] Preferably, the drive mechanism comprises: a driving member provided within the housing and having the driving end; a transmission assembly disposed within the housing and transmission-connected between the food dish and the drive member; The food tray is disposed at a distance from the thermally conductive sheet.

[0009] Preferably, the transmission assembly comprises: a rotating shaft disposed within the housing along the axial direction of the housing, the rotating shaft having a first end provided within the housing and a second end passing through the food tray and connected to the food tray; a first worm wheel coaxially mounted on a first end of the rotary shaft; a first worm disposed on one side of the rotation shaft, extending in a direction perpendicular to the axis of the rotation shaft, and meshing with the first worm wheel; a second worm wheel coaxially mounted on the first worm; and a second worm that meshes with the second worm wheel and whose extending direction is perpendicular to the axis of the first worm and the axial direction of the rotation shaft, and one end of the second worm remote from the second worm wheel is coaxially connected to the driving end of the driving member.

[0010] Preferably, the food dish comprises: a main body portion provided with the food bowl and having a connection through-hole through which the second end of the rotating shaft is inserted; at least one insertion portion connected to the main body portion, extending in the direction of the rotation axis, and arranged to surround the connection through-hole; An insertion slot into which the insertion portion is inserted is provided on the outer peripheral wall of the rotary shaft.

[0011] Preferably, the pet feeder further comprises a middle frame and a first insulating member; The inner frame is disposed on a side of the food tray facing the housing, a first accommodating cavity is formed between the inner frame and the housing, the heat sink and the semiconductor cooling sheet are both disposed within the first accommodating cavity, and the thermally conductive sheet protrudes from the inner frame and is connected to the food tray; The first heat insulating member is disposed within the first accommodating cavity, and the drive mechanism is disposed on the first heat insulating member.

[0012] Preferably, the heat sink comprises: a conductive substrate closely attached to the second surface of the semiconductor cooling sheet; heat dissipation fins extending outward from the conductive substrate; and a cooling fan used to force air over the heat dissipation fins.

[0013] Preferably, the cooling fan includes a fan wheel, the housing has an air inlet and an air outlet, the air inlet being arranged parallel to the axis of the fan wheel, and the air outlet being arranged at an angle to the fan wheel.

[0014] Preferably, the thermally conductive sheet is a connection portion connected to the first surface of the semiconductor cooling sheet; and a bent portion extending from one end of the connecting portion in a direction away from the semiconductor cooling sheet and adapted to fit snugly against the food tray.

[0015] Preferably, the pet feeder further comprises a bracket and a second insulating member; the bracket is provided in the housing, and the heat sink, the semiconductor cooling sheet, and the thermally conductive sheet are arranged on the bracket in this order; The second heat insulating member is provided between the thermally conductive sheet and the heat sink, and is further attached to the semiconductor cooling sheet.

[0016] Preferably, the pet feeder further comprises a thermally conductive block and a third insulating member; the thermally conductive block is provided between the semiconductor cooling sheet and the thermally conductive sheet, The third heat insulating member covers the thermally conductive block and is located between the semiconductor cooling sheet and the thermally conductive sheet.

[0017] Preferably, the bracket includes a bottom plate, at least two first side plates, and at least two second side plates; the bottom plate is disposed between the second heat insulating member and the third heat insulating member, and the bottom plate is provided with a through-hole through which the semiconductor cooling sheet passes and contacts the thermally conductive block; the at least two first side plates are provided on a side of the bottom plate facing the heat sink and are surrounded to form a second accommodating cavity, in which the heat sink and a second insulating member are disposed; The at least two second side plates are provided on the side of the bottom plate facing the thermally conductive sheet and are surrounded to form a third accommodating cavity, in which the thermally conductive block is arranged, and a third insulating member is attached to the at least two side plates. [Effects of the Invention]

[0018] The beneficial effects of the cooling mechanism provided by the present invention are as follows:

[0019] First, the control module controls the heating or cooling of the semiconductor cooling sheet, allowing the wet food to be heated or cooled, solving the technical problem of the complicated operation caused by using frozen blue ice to preserve freshness. The operation is simple, and it can prevent the temperature of the wet food from being too high in some places or too low in others, resulting in a relatively good freshness preservation effect.

[0020] Next, the feed tray or food cover is rotated using a drive mechanism, and since the feed tray is provided with a plurality of feed containers, a specific feed container can be selectively made to correspond to the window, thereby achieving the purpose of selective feeding. [Brief explanation of the drawings]

[0021] In order to more clearly explain the technical means in the embodiments of the present invention, the following will briefly explain using the drawings necessary for explaining the embodiments or the prior art. Of course, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without performing any creative work. [Figure 1] 1 is a schematic diagram of the three-dimensional structure of a pet feeder provided according to an embodiment of the present invention; [Figure 2] 1 is an exploded structural diagram of a pet feeder provided by an embodiment of the present invention; FIG. [Figure 3] 1 is a schematic diagram of the three-dimensional structure of a driving member and a transmission assembly provided according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of the three-dimensional structure of a food dish provided by an embodiment of the present invention; [Figure 5] 1 is a schematic diagram of the three-dimensional structure of a middle frame provided in an embodiment of the present invention; [Figure 6] 1 is a schematic diagram of the three-dimensional structure of a thermally conductive sheet, a semiconductor cooling sheet, a heat sink, a bracket, a first insulating member, and a second insulating member provided in an embodiment of the present invention. [Figure 7] 1 is an exploded structural schematic diagram of a thermally conductive sheet, a semiconductor cooling sheet, a heat sink, a bracket, a first insulating member, and a second insulating member provided in an embodiment of the present invention. [Figure 8] 1 is a cross-sectional structural schematic diagram of a thermally conductive sheet, a semiconductor cooling sheet, a heat sink, a bracket, a first insulating member, and a second insulating member provided according to an embodiment of the present invention. [Figure 9] 1 is a circuit principle diagram of a temperature adjustment structure provided by an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the technical problem to be solved, the technical means and the beneficial effects of the present invention clearer and more understandable, the present invention will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to interpret the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is described as being "fixed" or "disposed" on another component, it may be directly on the other component or indirectly on the other component. When a component is described as being "connected" to another component, it may be directly or indirectly connected to the other component.

[0024] It should be noted that the orientations or positional relationships indicated by terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of the present invention, and do not indicate or imply that the devices or components shown necessarily have a specific orientation or are constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be understood to indicate or imply relative importance or the number of technical features indicated. Thus, a feature qualified by "first" or "second" can explicitly or implicitly include one or more of said features. In describing the present invention, "plurality" means two or more, unless otherwise specified.

[0026] 1 and 2, a pet feeder according to an embodiment of the present invention will be described. The pet feeder can hold wet food and maintain the freshness of the wet food. Of course, dry food can also be held in the pet feeder, and is not limited thereto. The pet feeder includes a housing 2, a food tray 3, a food cover 4, and a drive mechanism 5.

[0027] 7, the housing 2 has a hollow columnar structure, and the housing 2 is provided with a thermally conductive sheet 11, a temperature regulating structure 12, and a heat sink 13. The temperature regulating structure 12 includes a semiconductor cooling sheet 121 and a control module 122, which are connected to each other via a line. The semiconductor cooling sheet 121 has a first surface and a second surface arranged opposite each other. The first surface of the semiconductor cooling sheet 121 is connected to the surface of the thermally conductive sheet 11 so that the cold or heat generated by the semiconductor cooling sheet 121 can be transferred via the thermally conductive sheet 11. The second surface of the semiconductor cooling sheet 121 is tightly attached to the surface of the heat sink 13 so that the heat generated by the semiconductor cooling sheet 121 can be transferred via the heat sink 13. The control module 122 is used to control the cooling or heating of the first surface of the semiconductor cooling sheet 121.

[0028] The food tray 3 is connected to the inside of the housing 2 and also to the thermally conductive sheet 11. The food tray 3 is provided with at least two food containers 31, and wet food to be kept fresh is placed in each of the food containers 31. The food cover 4 is provided with windows 41 that communicate with the food containers 31, and when one food container 31 corresponds to a window 41, the pet can conveniently eat the wet food in the food container 31 through the window 41.

[0029] The driving mechanism 5 is provided in the housing 2, and the driving end of the driving mechanism 5 is connected to the food tray 3, i.e., the driving mechanism 5 can rotate the food tray 3, or the driving end of the driving mechanism 5 is connected to the food cover 4, i.e., the driving mechanism 5 can rotate the food cover 4. The operating principle is as follows.

[0030] The semiconductor cooling sheet 121, also known as a thermoelectric semiconductor cooling sheet 1211, begins cooling or heating when power is applied. The control module 122 controls the heating or cooling of the first surface of the semiconductor cooling sheet 121. When cooling is required, the control module 122 controls the first surface of the semiconductor cooling sheet 121 to cool. When heating is required, the control module 122 controls the first surface of the semiconductor cooling sheet 121 to heat. This allows the heating function to be achieved without the need for an additional heating structure. The overall structure is relatively simple, and the amount of cooling or heat generated by the semiconductor cooling sheet 121 is transferred to the food tray 3 via the thermally conductive sheet 11. This maintains the temperature of the wet food in the food tray 3 within a certain range, preventing areas of the wet food being too hot or too cold, thereby achieving a better freshness-preserving effect. Here, the semiconductor cooling sheet 121 in this embodiment can maintain a temperature within 10 degrees.

[0031] Since wet food is placed in each food container 31, when the food tray 3 rotates, the wet food placed therein is also rotated, and when one of the food containers 31 corresponds to the window 41, the pet can easily eat the wet food in the food container 31. Since wet food is placed in each food container 31, after the wet food in one food container 31 is finished, the food tray 3 continues to rotate until the next food container 31 corresponds to the window 41. In other words, the relative rotation between the food tray 3 and the food cover 4 allows a specific food container 31 to be selectively aligned with the window 41, thereby achieving the purpose of selective feeding. It can also be seen that since the food tray 3 moves but the food cover 4 does not, the pet can eat the wet food in the food container 31 without changing position.

[0032] Of course, in other embodiments, when the food cover 4 rotates, the food tray 3 does not rotate, and the window 41 is driven to correspond to a specific food container 31, allowing the pet to easily eat the wet food in the food container 31 through the window 41, so long as the purpose of selective feeding can be achieved, the present invention is not limited thereto. Therefore, when the food cover 4 moves but the food tray 3 does not move, it can be understood that the food cover 4 itself is lighter than the food tray 3 because it does not hold any food. With this design, the driving force required for the drive mechanism 5 is reduced.

[0033] The pet feeder provided by the present invention has the following beneficial effects compared to the prior art:

[0034] First, the control module 122 controls the heating or cooling of the first surface of the semiconductor cooling sheet 121, which has a simple structure and does not require any additional heating structure to complete the heating function, making it possible to heat or cool wet food. This solves the technical problem of the complicated operation caused by using frozen blue ice to preserve freshness, is easy to operate, and can prevent the temperature of wet food from being too high in some places or too low in others, resulting in a relatively good effect of preserving freshness.

[0035] Next, the feed tray 3 or the food cover 4 is rotated using a drive mechanism 5, and since the feed tray 3 is provided with a plurality of feed containers 31, a specific feed container 31 can be selectively made to correspond to the window 41, thereby achieving the purpose of selective feeding.

[0036] The semiconductor cooling sheet 121 in this embodiment utilizes the Peltier effect of semiconductor materials. When DC power passes through two galvanic couples made of different semiconductor materials connected in series, heat absorption and dissipation occur at both ends of the galvanic couple, thereby achieving the purpose of cooling or heating. The control module 122 in this embodiment controls the switching time of the semiconductor cooling sheet 121 between cooling and heating by switching and timing. The thermally conductive sheet 11 has a fan-shaped structure and is made of aluminum, which is inexpensive and has good thermal and cold conduction properties.

[0037] In one embodiment of the present invention, also referring to Figure 9, the control module 122 includes a driver chip 1221, a controller 1222, and a power supply 1223, wherein the driver chip 1221 is electrically connected to the semiconductor cooling sheet 121, the controller 1222 is electrically connected to the driver chip 1221, and the controller 1222 controls the forward and reverse conduction of the semiconductor cooling sheet 121 through the driver chip 1221, and the power supply 1223 is electrically connected to the driver chip 1221 and is used to supply power to the driver chip 1221.

[0038] Here, the controller 1222 is electrically connected to the driver chip 1221 via the first control line 123 and the second control line 124. The driver chip 1221 is electrically connected to the semiconductor cooling sheet 121 via the first output line 125 and the second output line 126. The driver chip 1221 is supplied with power by the power supply 1223 and controls the output signals of the first control line 123, the second control line 124, the first output line 125, and the second output line 126. The controller 1222 changes the port states of the first control line 123 and the second control line 124 to change the positive or negative polarity of the output. For example, when the controller 1222 controls the first control line 123 to 1 and the second control line 124 to 0, the output of the first output line 125 is positive and the output of the second output line 126 is negative. At this time, the semiconductor cooling sheet 121 operates in a cooling state. That is, the surface of the semiconductor cooling sheet 121 facing the thermally conductive member 11 is the cold surface. Conversely, when the controller 1222 controls the first control line 123 to 0 and the second control line 124 to 1, the output of the first output line 125 becomes negative and the output of the second output line 126 becomes positive, and the semiconductor cooling sheet 121 operates in a heated state. That is, the surface of the semiconductor cooling sheet 121 facing the thermally conductive member 11 is the hot surface.

[0039] In one embodiment of the present invention, referring to FIG. 7 , the thermally conductive sheet 11, the semiconductor cooling sheet 121, and the heat sink 13 are located on the same plane. In this embodiment, when the housing is placed on the ground or a desk, the plane is horizontal, and the thermally conductive sheet 11, the semiconductor cooling sheet 12, and the heat sink 13 can be sequentially arranged on the same straight line. Of course, the thermally conductive sheet 11, the semiconductor cooling sheet 121, and the heat sink 13 may be arranged in a curved line as long as they can be tightly attached. Therefore, the three components overlap one another along the height of the housing 2, which prevents the three components from accumulating due to gravity and thus heat accumulation, and also prevents the overall thickness of the feeder from increasing.

[0040] 2 and 3 , in one embodiment of the present invention, the drive mechanism 5 includes a drive member 51 and a transmission assembly 6. The drive member 51 is disposed within the housing 2 and has the aforementioned drive end connected to the bait tray 3 to rotate the bait tray 3 relative to the housing 2. The transmission assembly 6 is disposed within the housing 2 and is transmission-connected between the bait tray 3 and the drive member 51, allowing the transmission assembly 6 to stably rotate the bait tray 3. Specifically, the drive member 51 may be a drive motor, and the output end of the drive motor is transmission-connected to the transmission assembly 6, thereby driving the bait tray 3 to rotate. Because the movement of the drive member 51 is transmitted via the transmission assembly 6, a smaller drive member 51 can be used, which can reduce costs to a certain extent.

[0041] Furthermore, the food tray 3 is spaced apart from the thermally conductive sheet 11, i.e., the food tray 3 is spaced apart from the thermally conductive sheet 11. In this embodiment, the space is 0.5 mm to 1.5 mm. In specific applications, the space between the food tray 3 and the thermally conductive sheet 11 is 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm. The space between the food tray 3 and the thermally conductive sheet 11 prevents the movement of the food tray 3 from being transferred to the thermally conductive sheet 11 during rotation, which could cause friction and deformation of the thermally conductive sheet 11. At the same time, it also prevents the gap between the food tray 3 and the thermally conductive sheet 11 from being too large, which could prevent cooling from being transferred to the food tray 3.

[0042] Furthermore, in this embodiment, the transmission assembly 6 is a worm gear transmission device, enabling power transmission between two staggered shafts without occupying the feeder's vertical size. Specifically, the transmission assembly 6 includes a rotating shaft 61, a first worm wheel 62, a first worm 63, a second worm wheel 64, and a second worm 65. The rotating shaft 61 is disposed within the housing 2 along the axial direction of the housing. A first end of the rotating shaft 61 is connected to the housing 2, and a second end of the rotating shaft 61 passes through the feed tray 3. The first worm wheel 62 is coaxially mounted on the first end of the rotating shaft 61. A worm wheel can be formed by providing tooth grooves on the outer circumferential surface of the rotating shaft 61. In other words, the rotating shaft 61 and the first worm wheel 62 are integrally molded. Of course, the worm wheel and the rotating shaft 61 can also be directly and detachably configured as separate components, facilitating replacement.

[0043] The first worm 63 is disposed on one side of the rotating shaft 61 and extends in a direction perpendicular to the axis of the rotating shaft 61. The first worm 63 transmits power while meshing with the first worm wheel 62. The second worm wheel 64 is coaxially mounted on the first worm 63. The second worm 65 extends in a direction perpendicular to the axis of the first worm 63 and the axis of the rotating shaft 61. The second worm 65 meshes with the second worm wheel 64. One end of the second worm 65 remote from the second worm wheel 64 is coaxially connected to the driving end of the driving member 51. When the driving end of the driving member 51 rotates, the second worm 65 is driven to rotate, and the second worm 65 drives the second worm wheel 64 to rotate. Because the second worm wheel 64 is fitted to the first worm 63, it rotates the first worm 63, and the rotation of the first worm 63 rotates the first worm wheel 62 meshing with the first worm 63. Because the first worm wheel 62 is arranged on the rotating shaft 61, the rotating shaft 61 is rotated, which in turn rotates the feed tray 3. By using the first worm wheel 62, the first worm 63, the second worm 65, and the second worm wheel 64, i.e., by using two-stage transmission, the rotation speed of the rotating shaft 61 can be reduced. On the other hand, by using the first worm 63 provided on one side of the rotating shaft 61, an increase in the overall thickness of the feeder can be avoided.

[0044] Of course, in other embodiments, the transmission assembly 6 may include only the rotating shaft 61, the first worm wheel 62, and the first worm 63, and the end of the first worm 63 may be connected to the driving end of the driving member 51. In other words, it is sufficient to achieve a single-stage transmission.

[0045] Furthermore, to achieve the purpose of scheduled feeding, the pet feeder further includes a control panel (not shown) and a circuit board (not shown). The circuit board is located at one end of the rotating shaft 61 that penetrates the food tray 3, and the control panel is located on the side of the circuit board away from the rotating shaft 61 and is electrically connected to the circuit board. The control panel is provided with an operation button. The operation button may be a timing button. For example, after setting the rotation time, the circuit board can control the driving member 51 to rotate periodically to achieve automatic feeding.

[0046] One end of the rotating shaft 61 protrudes from the food dish 3 but does not penetrate the food cover 4. To facilitate operation of the control panel and to prevent erroneous operation when a pet is eating wet food, a protective cover 9 is provided on the food cover 4 at a position corresponding to the control panel, and this protective cover 9 is detachably connected to the food cover 4, so that the control panel can be easily operated with the protective cover 9 removed.

[0047] 4 and 5 , in another embodiment of the present invention, the food dish 3 includes a main body 32 and at least one insert portion 33, the main body 32 is provided with at least two food containers 31, the main body 32 is provided with a connecting through-hole 34 through which the second end of the rotating shaft 61 passes, and the at least two food containers 31 are arranged around the connecting through-hole 34. That is, the connecting through-hole 34 is located at the center of the main body 32. Each insert portion 33 is connected to the main body 32 and extends toward the rotating shaft 61, and the at least one insert portion 33 is arranged around the connecting through-hole 34, and the rotating shaft 61 is provided on its outer peripheral wall with an insert slot 610 into which the insert portion 33 is inserted, and the food dish 3 and the rotating shaft 61 are connected by inserting the insert portion 33 into the insert slot 610.

[0048] In certain applications, the number of the at least one plug portion 33 may be one or more, but for a more stable connection, the number of the plug portion 33 may be more than one. Of course, in other embodiments, the food dish 3 may have a plug slot and the rotating shaft 61 may have a plug portion, and the connection between the food dish 3 and the rotating shaft 61 may be realized by the cooperation of the plug portion and the plug slot.

[0049] 2 and 7, in another embodiment of the present invention, the pet feeder further includes a middle frame 7 and a first insulating member 8, the middle frame 7 is disposed on the side of the food tray 3 facing the housing 2, a first receiving cavity is formed between the middle frame 7 and the housing 2, and the heat sink 13 and the semiconductor cooling sheet 121 are both disposed in the first receiving cavity. Here, the thermally conductive sheet 11 protrudes from the middle frame 7 and is disposed at a distance from the food tray 3, so that the cold or heat of the semiconductor cooling sheet 121 is transferred to the food tray 3, and the wet food in the food tray 3 is kept fresh.

[0050] The first insulating member 8 is disposed in the first storage cavity, and the transmission assembly 6 is disposed in the first insulating member 8 and connected to the food tray 3 through the middle frame 7. The first insulating member 8 is used to block contact between the room temperature air in the first storage cavity and the food tray 3, and to make the area of ​​the food tray 3 an independent low-temperature area.

[0051] Specifically, in this embodiment, first insulating member 8 is made of EPS (expanded polystyrene), a material with advantages such as light weight, low thermal conductivity, and low water absorption, thereby effectively preventing room-temperature air in third housing cavity from being transmitted to thermally conductive sheet 11 via inner frame 7 and affecting the freshness of food items in food tray 3. First insulating member 8 is provided with a mounting groove 81, within which drive mechanism 5 is attached. Mounting groove 81 is a recessed groove, and housing 2 is provided with a support frame 21, which is positioned corresponding to mounting groove 81, and drive mechanism 5 is attached to support frame 21.

[0052] 5, the inner frame 7 includes a mounting portion 71, which is a plate-shaped structure, and an extending portion 72 extending horizontally from one side of the mounting portion 71. The thermally conductive sheet 11 and the food tray 3 are disposed in this order within the mounting portion 71. The extending portion 72 and the mounting portion 71 form a storage space surrounding the semiconductor cooling sheet 121 and the heat sink 13. The mounting portion 71 is provided with a through-hole for passing the thermally conductive sheet 11 therethrough. That is, the thermally conductive sheet 11 is disposed within the mounting portion 71 through the through-hole, thereby transmitting the cooling or heat generated by the semiconductor cooling sheet 121 to the food tray 3. By disposing the food tray on the mounting portion 71 and disposing the semiconductor cooling sheet 121 and the heat sink 13 on one side of the mounting portion 71, it is possible to avoid increasing the overall thickness of the pet feeder to a certain extent.

[0053] 6 to 8, in another embodiment of the present invention, the heat sink 13 includes a conductive substrate 130, heat dissipation fins 131, and a cooling fan 132. The conductive substrate 130 contacts the second surface of the semiconductor cooling sheet 121, and the heat dissipation fins 131 extend outward from the conductive substrate 130, where "outward" refers to the direction away from the conductive substrate 130. The cooling fan 132 blows air onto the heat dissipation fins 131 from directly in front to create airflow between the heat dissipation fins 131, thereby quickly dissipating heat from the heat dissipation fins 131 and achieving a rapid heat dissipation effect. The heat dissipation fins 131 may be an aluminum heat equalizer tube or plate, and the configuration and structure thereof are not limited.

[0054] In one embodiment of the present invention, referring to FIG. 2 , the cooling fan 132 includes a fan wheel (not shown), the housing 2 has an air inlet 22 and an air outlet 23, the air inlet 22 is arranged parallel to the fan wheel of the cooling fan 132, the air outlet 23 is arranged at an angle to the fan wheel, and the cooling fan 132 is an axial fan that can push air along the air inlet 22 and discharge the air from the air outlet 23 around the housing 2.

[0055] 7, in another embodiment of the present invention, the thermally conductive sheet 11 includes a connecting portion 110 and a bending portion 111, the connecting portion 110 is connected to a first surface of the semiconductor cooling sheet 121, the bending portion 111 extends from one end of the connecting portion 110 in a direction away from the semiconductor cooling sheet 121, and the bending portion 111 is used to contact the item to be kept fresh. Here, in this embodiment, the connecting portion 110 has a sheet-like structure, an end face of the connecting portion 110 is connected to the surface of the semiconductor cooling sheet 121, and the bending portion 111 also has a sheet-like structure, and the bending portion 111 is used to connect to the food tray 3 of the pet feeder. According to the bent portion 111, the bent portion 111 comes into surface contact with the object to be kept fresh, thereby increasing the contact area between the thermally conductive sheet 11 and the object to be kept fresh, and the small-volume semiconductor cooling sheet 121 can cool and keep fresh a wide area of ​​the object to be kept fresh, achieving uniform cooling of the object to be kept fresh, and also allowing the object to be kept fresh to be placed on one side of the semiconductor cooling sheet 121, thereby avoiding an increase in the height of the entire cooling mechanism.

[0056] Specifically, the bent portion 111 in this embodiment is a semicircular sheet-like structure. Of course, the bent portion 111 may be disk-shaped, and may be selected according to specific needs.

[0057] 7 and 8, in another embodiment of the present invention, the pet feeder further includes a bracket 14 and a second insulating member 151. The bracket 14 is installed within the housing 2, and the heat sink 13, semiconductor cooling sheet 121, and thermally conductive sheet 11 are sequentially arranged on the bracket 14, providing support for the heat sink 13, temperature regulating structure 12, and thermally conductive sheet 11, improving overall integration for cooling items that need to be kept fresh. To avoid contact between the thermally conductive sheet 11 and the heat sink 13 and to prevent external room-temperature air from affecting the semiconductor cooling sheet 121, the second insulating member 151 is installed on one side of the bracket 14 and is located between the thermally conductive sheet 11 and the heat sink 13. The second insulating member 151 is further fitted over the semiconductor cooling sheet 121.

[0058] Specifically, in this embodiment, the second insulating member 151 is made of EPS (expanded polystyrene), which has advantages such as light weight, low thermal conductivity, and low water absorption, thereby effectively blocking contact between the external room temperature air and the semiconductor cooling sheet 121. The second insulating member 151 is provided with first through holes 1510, which allow the semiconductor cooling sheet 121 to pass through and contact the thermally conductive sheet 11 and the heat sink 13, respectively. That is, the semiconductor cooling sheet 121 is attached to the second insulating member 151 through the first through holes 1510.

[0059] 7 and 8, in another embodiment of the present invention, the pet feeder further includes a thermally conductive block 16 and a third insulating member 152, and the thermally conductive block 16 is disposed between the semiconductor cooling sheet 121 and the thermally conductive sheet 11 to increase the rate of cooling and transfer low temperature to the thermally conductive sheet 11. In order to prevent the thermally conductive block 16 and the semiconductor cooling sheet 121 from being affected by external room temperature air on the side of the thermally conductive sheet 11, the third insulating member 152 is attached to the thermally conductive block 16 and is disposed between the semiconductor cooling sheet 121 and the thermally conductive sheet 11, thereby blocking the influence of external air on the thermally conductive block 16 and the semiconductor cooling sheet 121.

[0060] Specifically, in this embodiment, the thermally conductive block 16 is made of aluminum, which is low-cost and has excellent thermal conductivity, and the third insulating member 152 is made of expanded polystyrene (EPS), which has advantages such as light weight, low thermal conductivity, and low water absorption, thereby effectively insulating the semiconductor cooling sheet 121 and the thermally conductive sheet 11 from contact with the external room-temperature air. A thermally conductive adhesive is provided between the semiconductor cooling sheet 121 and the thermally conductive sheet 11 to facilitate heat conduction. The third insulating member 152 is provided with a second through-hole 1520, through which the thermally conductive block 16 passes to contact the semiconductor cooling sheet 121 and the thermally conductive sheet 11, respectively. That is, the thermally conductive block 16 is attached to the third insulating member 152 through the second through-hole 1520.

[0061] 7 and 8, in another embodiment of the present invention, the bracket 14 includes a bottom plate 141, at least two first side plates 142, and at least two second side plates 143. Here, the bottom plate 141 is disposed between a second heat insulating member 151 and a third heat insulating member 152, and the bottom plate 141 is provided with through-holes 1410 through which the semiconductor cooling sheet 121 passes and contacts the thermally conductive block 16. The at least two first side plates 142 are disposed on the side of the bottom plate 141 facing the heat sink 13, and are surrounded to form a second accommodating cavity, in which the heat sink 13 and the second heat insulating member 151 are disposed.

[0062] At least two second side plates 143 are provided on the side of the bottom plate 141 facing the thermally conductive sheet 11 and are surrounded to form a third accommodating cavity, in which a thermally conductive block 16 is disposed, and a third heat insulating member 152 is fitted to the at least two second side plates 143. That is, the second side plates 143 are inserted through the second through-holes 1520 of the third heat insulating member 152. The thermally conductive sheet 11 and the heat sink 13 may be separated by the bottom plate 141 to prevent contact between the thermally conductive sheet 11 and the heat sink 13. The first side plate 142 may support the heat sink 13 and the second heat insulating member 151, and the second side plate 143 may be used to support the thermally conductive block 16 and the thermally conductive sheet 11. The bracket 14 can integrate the heat sink 13, the thermally conductive sheet 11, and the semiconductor cooling sheet 121, so that it can cool items that need to be kept fresh in different containers, and has a high degree of integration.

[0063] The above are only preferred embodiments of the present invention, and the present invention is not limited thereto. As long as they fall within the spirit and principle of the present invention, all modifications, equivalent replacements, improvements, etc., made thereto should be included within the protection scope of the present invention. [Explanation of symbols]

[0064] 11 thermally conductive sheet, 110 connection portion, 111 bending portion, 12 temperature adjustment structure, 121 semiconductor cooling sheet, 122 control module, 1221 driving chip, 1222 controller, 1223 power supply, 123 first control line, 124 second control line, 125 first output line, 126 second output line, 13 heat sink, 130 conductive substrate, 131 heat dissipation fin, 132 cooling fan, 14 bracket, 141 bottom plate, 1410 through hole, 142 first side plate, 143 second side plate, 151 second heat insulating member, 1510 first through hole, 152 third heat insulating member, 1520 second through hole, 16 thermally conductive block, 2 housing, 21 support frame, 22 air inlet, 23 air outlet, 3 food dish, 31 food container, 32 main body, 33 insertion part, 34 connection through hole, 4 food covers, 41 teller windows, 5 drive mechanism, 51 drive member, 6 Transmission assembly, 61 Rotating shaft, 610 Insertion slot, 62 First worm wheel, 63 First worm, 64 Second worm wheel, 65 Second worm, 7 middle frame, 71 mounting portion, 72 extension portion, 8 first heat insulating member, 81 mounting groove, 9 Protective cover.

Claims

1. A pet feeder comprising a housing, a food tray, a food cover, and a drive mechanism, a thermally conductive sheet, a temperature adjustment structure, and a heat sink are provided within the housing, the temperature adjustment structure includes a semiconductor cooling sheet and a control module, the semiconductor cooling sheet has a first surface and a second surface arranged opposite to each other, the first surface is connected to the thermally conductive sheet, and the second surface is closely attached to the heat sink, and the control module is used to control the cooling or heating of the first surface of the semiconductor cooling sheet; the food tray is connected to the inside of the housing and to the thermally conductive sheet, the food tray is provided with at least two food containers, and each of the food containers is used to place an item to be kept fresh; The food cover is placed over the food tray, and the food tray is provided with a window communicating with the food container, The drive mechanism is provided in the housing, and a drive end of the drive mechanism is connected to the food tray or a drive end of the drive mechanism is connected to the food cover; The drive mechanism includes: a driving member provided within the housing and having the driving end; a transmission assembly disposed within the housing and transmission-connected between the food dish and the drive member; The food tray is disposed at a distance from the thermally conductive sheet; The heating element further includes a bracket, a second heat insulating member, a thermally conductive block, and a third heat insulating member; the bracket is provided in the housing, and the heat sink, the semiconductor cooling sheet, and the thermally conductive sheet are arranged on the bracket in this order; the second heat insulating member is provided between the thermally conductive sheet and the heat sink, and is further attached to the semiconductor cooling sheet; the thermally conductive block is provided between the semiconductor cooling sheet and the thermally conductive sheet, the third heat insulating member is attached to the thermally conductive block and is located between the semiconductor cooling sheet and the thermally conductive sheet; The bracket includes a bottom plate, at least two first side plates, and at least two second side plates; the bottom plate is disposed between the second heat insulating member and the third heat insulating member, and the bottom plate is provided with a through-hole through which the semiconductor cooling sheet passes and contacts the thermally conductive block; the at least two first side plates are provided on a side of the bottom plate facing the heat sink and are surrounded to form a second accommodating cavity, and the heat sink and a second insulating member are disposed in the second accommodating cavity; A pet feeder characterized in that the at least two second side panels are provided on the side of the bottom panel facing the thermally conductive sheet and are surrounded to form a third storage cavity, the thermally conductive block is arranged within the third storage cavity, and a third insulating member is attached to the at least two second side panels.

2. The control module a driver chip electrically connected to the semiconductor cooling sheet; a controller electrically connected to the driving chip and controlling the forward and reverse conduction of the semiconductor cooling sheet by the driving chip; 10. The pet feeder of claim 1, further comprising: a power source electrically connected to the driver chip.

3. 2. The pet feeder according to claim 1, wherein the thermally conductive sheet, the semiconductor cooling sheet, and the heat sink are located on the same plane.

4. The transmission assembly includes: a rotating shaft disposed within the housing along an axial direction of the housing, the rotating shaft having a first end provided within the housing and a second end passing through the food tray and connected to the food tray; a first worm wheel coaxially mounted on a first end of the rotary shaft; a first worm disposed on one side of the rotation shaft, extending in a direction perpendicular to the axis of the rotation shaft, and meshing with the first worm wheel; a second worm wheel coaxially mounted on the first worm; The pet feeder of claim 3, further comprising: a second worm that meshes with the second worm wheel and whose extension direction is perpendicular to the axis of the first worm and the axial direction of the rotation shaft, and one end of the second worm that is remote from the second worm wheel is coaxially connected to the drive end of the drive member.

5. The feeding dish is a main body portion provided with the food bowl and having a connection through-hole through which the second end of the rotating shaft is inserted; at least one insertion portion connected to the main body portion, extending in the direction of the rotation axis, and arranged to surround the connection through-hole; 5. The pet feeder according to claim 4, wherein an insertion slot into which the insertion portion is inserted is provided on an outer peripheral wall of the rotary shaft.

6. Further comprising a middle frame and a first insulating member; The inner frame is disposed on a side of the food tray facing the housing, a first accommodating cavity is formed between the inner frame and the housing, the heat sink and the semiconductor cooling sheet are both disposed within the first accommodating cavity, and the thermally conductive sheet protrudes from the inner frame and is connected to the food tray; The pet feeder of any one of claims 1 to 5, characterized in that the first insulating member is disposed within the first accommodating cavity, and the drive mechanism is disposed in the first insulating member.

7. The heat sink is a conductive substrate closely adhering to the second surface of the semiconductor cooling sheet; heat dissipation fins extending outward from the conductive substrate; 6. The pet feeder of claim 1, further comprising a cooling fan used to circulate air over the heat dissipation fins.

8. 8. The pet feeder of claim 7, wherein the cooling fan includes a fan wheel, the housing has an air inlet and an air outlet, the air inlet being arranged parallel to the axis of the fan wheel, and the air outlet being arranged at an angle to the fan wheel.

9. The thermally conductive sheet is a connection portion connected to the first surface of the semiconductor cooling sheet; The pet feeder according to any one of claims 1 to 5, further comprising a bent portion extending from one end of the connection portion in a direction away from the semiconductor cooling sheet.

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