CN212489049U - Improved cold-warm type electric heating dining table capable of enlarging table top - Google Patents

Abstract

Can enlarge cool warm type electric heat dining table of desktop after the improvement, characterized by: a central heating ring and an outer heating ring which are wound by multilayer insulated electric heating wires are arranged inside a central desktop, a panel of the central desktop is arranged on the heating ring, a bottom plate of the central desktop is arranged below the heating ring, a frame heating ring is arranged on the frame of the central desktop, a central shaft sleeve which enables the desktop to rotate as an axis is arranged in the center of the bottom surface of the central desktop, an anti-overshoot central shaft of a fixed foot rest is inserted in the central shaft sleeve, an adjusting nut which eliminates the shake of the central desktop is arranged below a bearing, the bottom surface of the central desktop and a rotating wheel at the top end of the fixed foot rest form a sliding surface to enable the central desktop to become a rotatable turntable, an electric fan is arranged in the center of a lower beam of the fixed foot rest, the heater and the conducting slip ring are connected with the leakage-proof plug through wires, and the movable foot rest is provided with two male plates and two female plates which are connected into a round movable table top which is arranged on the movable foot rest.

Description

Improved cold-warm type electric heating dining table capable of enlarging table top

Technical Field

The utility model relates to a dining table especially relates to multi-functional electric heat dining table.

Background

My earlier application has been a cold warm type can enlarge multi-functional electric heat dining table patent of carousel and desktop, application number: 201821670945.4 it is found that there is still a defect in the dining table, the dining table uses more locking screws of butterfly hand, the locking screws are locked in the connection between the fixed foot rest and the movable foot rest, the locking screws are locked in the connection between the sliding sleeve and the sliding beam, the locking screws are locked in the connection between the central shaft sleeve and the central shaft, the locking screws of the movable butterfly hand have no anti-falling function, the locking screws are loosened and left in the screw holes to wait for use when they are not used at ordinary times, the locking screws are used only when the dining table is enlarged in holidays, the locking screws are loosened and not used frequently, the locking screws of the dining table are lost frequently to be insufficient, the locking screws are found everywhere when the dining table is enlarged, because the locking screws are movable and have no anti-falling function, the dining table will be lost due to vibration when moving, the locking screws are easy to be twisted by active children and played to enable the dining table to lack the locking screws, the locking screws are important for normal use of the dining table, if the foot rest lacks the locking screws, the movable foot rest cannot be locked with the fixed foot rest, the expanded movable table top cannot be used due to shaking, if the sliding sleeve lacks the locking screws, the sliding sleeve cannot be locked with the sliding beam, the expanded turntable swings indefinitely, soup or a dish placed on the turntable overflows, if the central shaft sleeve lacks the locking screws, the central shaft sleeve and the central shaft cannot be locked, shaking of the table top cannot be eliminated, so that the dining table needs to be used for supplementing the lost locking screws by means of backing up the locking screws, and the normal use of the dining table is maintained, and troubles are caused; when the dining table is a metal panel, if the dining table is heated, the edge frame of the table top can not be heated, the temperature difference between the table top and the edge frame is too large, so that the table top is raised and deformed, which is caused by the expansion and contraction of metal, the temperature difference between the table top and the edge frame is larger, the central rising and deformation of the table top is higher, a dish or tableware placed on the table top can easily slide out of the table top and fall to the ground due to the unevenness of the table top, so when the temperature of the table top is adjusted to be higher, people are prevented from being injured by sliding the dish or the tableware on the ground, the potential safety hazard of the dining table still exists, the temperature difference between the table top and the edge frame is reduced, but the temperature of the edge frame cannot be as high as that of the table top, people sitting around the dining table can be scalded if the temperature of the edge frame is too high, according to the use experience, the temperature of the frame is proper at about 65 ℃, the temperature can not scald people, the ice-cold feeling of the frame can be avoided, and the thermal deformation of the table top can be reduced; the central shaft of the dining table foot rest is not provided with a limiting device, and the adjusting thread section of the central shaft is too long, so that some people who do not know about adjustment can screw threads fully when adjusting and eliminating table top shake, and as a result, the central table top is pulled out or deformed due to over adjustment; the middle top foot of the dining table is movably inserted, after the middle top foot is detached from the arc-shaped plate, the middle top foot and the arc-shaped plate are not stored continuously, but are stored separately, the arc-shaped plate and the middle top foot are used when the dining table top is enlarged during holiday dinner gathering each year, and the middle top foot is lost easily in the storage process.

Disclosure of Invention

To the defect that exists, the utility model provides a cold warm type electric heat dining table that can enlarge the desktop after improving, this dining table uses anti-drop locking screw, the unable expansion that causes because of locking screw drops is used movable desktop problem, this dining table heats the dining table frame, make the frame no longer ice-cold reduce the difference in temperature of desktop and frame simultaneously, the heat altered shape that makes the desktop reaches the minimum, reduce the potential safety hazard that dish or tableware dropped ground, this dining table uses and prevents overrating center pin, prevent to pull out the desktop deformation because of excessively adjusting when adjusting the elimination table shake, this dining table will fold the shrink of top foot and fold and lose in the below transport that prevents of arc.

The technical measures of the utility model are that: can enlarge cool warm type electric heat dining table of desktop after the improvement, characterized by: a central heating ring 3 and an outer heating ring 4 which are wound by multilayer insulated electric heating wires 2 are arranged inside a central desktop 1, a panel 5 of the central desktop is arranged on the heating ring, a bottom plate 6 of the central desktop is arranged under the heating ring, the central heating ring and the outer heating ring are connected with a multi-probe temperature controller 7 and a temperature protective tube 8, the central heating ring and the outer heating ring are connected with an on-off switch 9 on the bottom surface of the central desktop, a frame heating ring 10 is wound on the frame of the central desktop, the frame heating is connected with a temperature control switch, an electrical appliance socket 11 for supplying power to desktop electrical appliances is arranged outside the bottom surface of the central desktop, conducting slide rings 12 for preventing winding are connected with conducting wires of the central heating ring, the outer heating ring, the frame heating wire, the temperature controller and the electrical appliance socket, a central shaft sleeve 13 which enables the desktop to become an axis to rotate is arranged in the center of the bottom surface of the central desktop, and an anti-overshoot central shaft, an anti-falling locking screw I16 of a shaft and a sleeve is arranged outside the shaft sleeve to lock the central shaft sleeve and the central shaft into a whole, a spring 17 for preventing the shaft from descending is sleeved outside the upper end of the over-adjusting preventing central shaft, a wire-winding preventing conductive slip ring is sleeved outside the spring, a bearing 18 which is in isolated rotation with a foot rest is sleeved outside the lower end of the over-adjusting preventing central shaft, an adjusting nut 19 for eliminating the shaking of a central desktop is screwed below the bearing, the bottom surface of the central desktop and a rotating wheel 20 at the top end of the fixed foot rest form a sliding surface to enable the central desktop to become a rotatable rotating disk, a rotation stopping needle 21 on the fixed foot rest is inserted into a rotation stopping hole of the central desktop to prevent the central desktop from rotating, an upper beam 22 of the fixed foot rest is welded to enable the foot rest to be fixed into a cross-shaped tension rod 23, holes are respectively formed in the ends of the upper beam and the lower beam 24, an anti-falling locking screw II 25 is arranged outside each hole, an electric fan 29 is arranged at the center of a lower beam of a fixed foot stand, an overheating protector 30, a heat insulation layer and a heater 31 are arranged outside the electric fan, wires of the electric fan, the overheating protector, the heater and a conductive slip ring are connected with an anti-creeping plug 32, a movable table top 33 is arranged at the upper end of the movable foot stand, hook feet 35 at two ends of a male plate 34 of the movable table top are inserted into hollow pipes of the movable foot stand to form fixed connection with the movable foot stand, clamping feet 36 at two ends of the male plate extend into clamping plates 38 at two ends of a mother plate 37 and are firmly clamped by the clamping plates to connect four arc plates into a circular movable table top frame on the movable foot stand, and the male plate of the movable table top and a folding top foot 39.

The cooling and heating type electric heating dining table can be shared by cooling and heating, and can also be single-cooling or single-heating type electric heating dining tables, wherein the electric fan and the heater are simultaneously installed on the cooling and heating shared electric heating dining table, only the electric fan is installed on the single-cooling electric heating dining table, and only the heater is installed on the single-heating electric heating dining table.

The center desktop is a rotary disc which can be rotated manually or electrically when the dining table is enlarged, the center desktop can be provided with an invisible induction cooker or a heating furnace at the center of the desktop, the center desktop is a plate formed by combining a bottom plate and a panel, one of the center desktop is provided with a plurality of layers of insulated electric heating wires, heat insulating materials, sliding sleeves and sliding beams, the other center desktop is oppositely overlapped to seal the electric heating wires, the heat insulating materials, the sliding sleeves and the sliding beams inside, the bottom plate can be a wood plate or plastic or metal materials or organic glass or composite materials, and the panel can be stainless steel or glass or wood plate or marble or jade or ceramic or aluminum plate or copper plate or iron plate or composite materials.

The multilayer insulated electric heating wire can be an inner layer of fluoroplastic, an outer layer of glass fiber or the inner layer of fluoroplastic, an intermediate layer of glass fiber and the outer layer of fluoroplastic, and the glass fiber pipe cannot shrink or fracture in high and low temperature changes, so that the insulation strength is effectively improved.

The central heating ring and the outer heating rings are spiral heating rings which are wound by multilayer insulated electric heating wires at certain intervals, and are wound into a plurality of heating rings according to the size of a dining table, the inner heating rings are surrounded by the outer heating rings, and each heating ring is connected with an on-off switch.

The multi-probe temperature controller can be one temperature controller with a plurality of probes for temperature control, or two or more temperature controllers with segmented temperature control, and can be mechanical or electronic type or microcomputer type or frequency conversion type.

When the rotation stopping needle on the fixed foot stand is inserted into the rotation stopping hole, the central table top cannot rotate, and when the rotation stopping needle exits the rotation stopping hole, the central table top can rotate randomly.

When the table top does not need to be enlarged, each movable foot stand is respectively retracted and combined with the fixed foot stand to form a foot stand, the movable upper beam and the movable lower beam are hidden in the hollow tube of the fixed foot stand and are not exposed, and the foot stands can be folded together in a left-right rotating mode.

The screw head of the screw is V-shaped hollow, when the screw is screwed in and pushed against the movable beam, the center of the screw head is hollow, the thread at the end of the screw can be compressed, when the screw is withdrawn, the screw can not be withdrawn after being withdrawn to a certain distance due to the fact that the thread of the screw head is compressed, and therefore locking and loosening of the movable beam can be guaranteed without dropping the screw.

The anti-overshoot central shaft is characterized in that the lower end of the shaft is provided with an overlong thread section or the thread section is provided with a limiting bump to prevent overshoot.

The middle top leg is a movable leg which can be inserted, and the middle top leg is arranged on the movable table top of the outermost grid no matter how many grids of the dining table are enlarged.

The movable table top can be heated and temperature-adjusted or not, the movable table top is erected on the movable foot rest by jointing four arc plates and firmly clamping the clamping legs, wherein two arc plates are male plates, two arc plates are female plates, the two male plates are arranged at the front and the rear of the movable table top during installation, and the two female plates are arranged at the left and the right of the movable table top.

The electric heating wire can be a carbon fiber electric heating wire or other electric heating wires.

The electric fan is an air-conditioning fan or an air conditioner.

The warmer can be a heating pipe, a heating sheet or a heating wire, and can be arranged outside the electric fan or on four columns of the foot rest.

When the anti-creeping plug is installed in the line of a user, the anti-creeping plug is not needed in the electric heating dining table.

Drawings

Fig. 1 is a schematic view of the overall structure of a cool and warm type electric heating dining table which can enlarge the table top after improvement.

Fig. 2 is a top view of fig. 1.

Figure 3 is a front view of a central desktop.

Fig. 4 is a schematic view after the movable table top is removed and the movable foot stool is contracted.

Fig. 5 is a sectional view of the fixed and retracted movable stands and the cooler and warmer.

Fig. 6 is a schematic view of the fixed foot stand and the movable foot stand pulled out.

Fig. 7 is a top view of the stand with the electric fan and the heater removed and fixed in a cross shape by the stretching rod.

Fig. 8 is a stretching rod mounted on the foot rest.

Fig. 9 is a sectional view of the anti-drop locking screw.

Fig. 10 is a schematic view of the overshoot preventing center axis.

Fig. 11 is a schematic illustration of a male plate.

Fig. 12 is a schematic diagram of a motherboard.

In the figure: 1 central desktop, 2 multilayer insulated electric heating wires, 3 central heating rings, 4 outer heating rings, 5 panels, 6 bottom plates, 7 multi-probe temperature controllers, 8 temperature protective tubes, 9 on-off switches, 10 frame heating rings, 11 electrical sockets, 12 conductive slip rings, 13 central shaft sleeves, 14 fixed foot rests, 15 anti-overshoot central shafts, 16 anti-drop locking screws I, 17 springs, 18 bearings, 19 adjusting nuts, 20 rotating wheels, 21 anti-drop pins, 22 upper beams, 23 rods, 24 lower beams, 25 anti-drop locking screws II, 26 movable foot rests, 27 movable upper beams, 28 movable lower beams, 29 electric fans, 30 overheat protectors, 31, 32 anti-leakage plugs of a warmer, 33 movable desktops, 34 male plates, 35 hook pins, 36 clamp pins, 37 mother boards, 38 clamp boards and 39 folding top pins.

Detailed Description

The best mode of the following combined with the attached drawings is that a dining table foot rest is welded and manufactured by square stainless steel pipes, a central shaft mounting hole is arranged in the center of an upper beam of the foot rest, a mounting hole of a cooling and heating device is arranged on a lower beam of the foot rest, a swinging stretching rod is welded on one side of a cross beam of the foot rest, a stretching rod hook hole is arranged on the other side of the foot rest, the head of the stretching rod is provided with a stretching rod hook hole which hooks the other side of the foot rest so that the foot rest is fixed into a cross shape, a heat insulation material is laid on a bottom plate of a central desktop, an aluminum foil reflection film is arranged on the heat insulation material, a plurality of layers of insulating electric heating wires are arranged on the aluminum foil reflection film, the plurality of layers of insulating electric heating wires are spirally wound into a central heating ring at equal intervals, after the central heating ring is wound, an outer heating ring is wound, heating ring wires are fixed by a staple, the wire lengths of the inner heating ring and the outer heating ring are equal to ensure that the power is, in order to avoid scalding hands caused by overhigh temperature of the frame, the lead wires of the central heating ring and the outer heating ring are connected with a multi-probe temperature controller, the probe and a temperature protective tube of the temperature controller are tightly attached to an electric heating wire, a temperature control switch is tightly attached to the frame heating ring and fixed by a screw, the lead wire of the temperature control switch is connected with the frame heating ring, a stainless steel panel welded with the frame is opposite to a bottom plate to seal the electric heating wire and a heat insulating material inside, the panel and the bottom plate are fixed into a complete central desktop by the screw, an on-off switch of the heating ring is arranged on the bottom surface of the central desktop, an electric socket for an electric appliance of the desktop is arranged outside, the lead wires of the central heating ring, the outer heating ring and the frame heating ring are connected with the on-off switch on the bottom surface of the central desktop, the lead wire of the on-off switch is connected with an output wire of the temperature controller, a, note that, the bottom plate must not be drilled, the rotation stopping needle can be inserted into the rotation stopping hole, the central shaft is sleeved into the central hole of the upper beam of the fixed foot rest, the spring is sleeved at the upper end of the central shaft, the central shaft which is propped by the spring cannot descend due to the fact that the shaft pin is inserted into the spring, the conductive slip ring which is used for avoiding winding is sleeved outside the spring and is fixed on the upper beam through the screw, the bearing is sleeved at the lower end of the central shaft, an adjusting nut which eliminates shaking of the table top is screwed up, the bearing has the effect that the central shaft and the adjusting nut rotate to be isolated from the foot rest, and the bottom surface of the central table top and a rotating wheel at the top end of the fixed foot rest: the central desktop is pulled downwards to fix the foot rest to push upwards until four rotating wheels at the upper ends of four columns of the foot rest cling to the bottom surface of the central desktop so as to eliminate the shaking of the desktop, the fixing foot rest is opened into a cross shape by hands, the hook head of the opening rod is hooked into the hook hole at the other side, the opening rod fixes the foot rests at two sides into the cross foot rest, if the foot rest is rotated left and right to fold for carrying, the opening rod is withdrawn from the hook hole, the opening rod is left on the other side foot rest, the central desktop is installed on the fixing foot rest, the central shaft is inserted into the central shaft sleeve at the bottom of the central desktop and the anti-falling locking screw is screwed so as to connect the central desktop and the fixing foot rest into a whole, the adjusting nut for eliminating the shaking of the desktop is screwed so that the fixing foot rest pushes upwards, the central desktop is pulled downwards until the rotating wheels cling to the bottom surface of the central desktop and eliminate the shaking of the desktop, the, screwing down screws to lock the anti-rotation needle, pulling out the movable foot stand, installing a movable desktop on the movable foot stand, installing two male plates at the front and the back, inserting hooked feet at two ends of the male plates into left and right hollow pipes of the movable foot stand to enable the male plates to be erected on the movable foot stand, erecting two male plates on four columns of the movable foot stand in tandem, installing two mother plates at the left and the right, splicing the male plates at two ends by holding one mother plate with hands, when two ends of the mother plate are butted with two ends of the male plates, the clamping feet at two ends of the male plates extend into the bottoms of the two heads of the mother plate and supporting the mother plate by the clamping feet at two ends, screwing down butterfly-shaped clamping plate nuts of the mother plate to clamp the clamping feet of the male plates tightly, firmly connecting the male plates and the other male plates together, splicing the four arc-shaped plates to form a circular movable desktop erected on the hollow pipes of the movable foot stand, because the movable foot stand cannot extend to the outer edge of the movable desktop and has, the supporting points are arranged at the two ends, the gravity center is arranged in the middle of the arc-shaped plate, if the arc-shaped plate inclines outwards when the movable table is used for placing articles with overweight, therefore, the middle of the arc-shaped plate is provided with a folding top foot for preventing the arc-shaped plate from inclining outwards, the hook foot of the male plate is inserted into the hollow pipe of the movable foot rest to ensure that the movable table and the movable foot rest are connected and fixed, the movable table top is supported by the folding top foot and the movable foot rest together, the folding top foot ensures that the bearing capacity of the movable table top is increased and the inclination of the arc-shaped plate can be prevented, the movable table top is supported by eight feet instead of four feet, so that the movable table can bear heavy weight, after the movable table top is installed, then the clearance between the turntable and the movable table top is adjusted to be proper, the movable upper beam and the movable lower beam of the movable foot rest are locked into a whole with the fixed foot rest by screwing the anti-falling locking screws II of the upper beam and the lower beam of the fixed foot rest, and the anti-falling principle of the anti-falling screws is as follows: the screw thread head of the screw is V-shaped hollow, when the screw is screwed in and pushed against a hard object, the screw thread at the V-shaped head end is compressed, when the screw is screwed out, the screw can not be screwed out again because the V-shaped head end is compressed, the screw can not be screwed out by using pliers, the screw can not fall off and be lost due to vibration when the dining table moves, a child can not twist out and play, the electric fan is installed and adjusted according to the above steps, the inner table top and the outer table top do not shake, the rotating disc rotates stably and noiselessly, the electric appliance socket and the conducting wires of each heating ring are connected with the conducting slip ring, the cooling and heating device is assembled after the dining table is assembled, the insulating plate ring is installed in the cylinder welded with the installation hole, the electric fan is fixed in the insulating plate ring of the cylinder by using the screw, the metal of the motor shell of the electric fan can not contact with the cylinder to prevent the electric leakage of the electric fan from being transmitted to the cylinder, the method comprises the steps of enclosing a cylinder by a square board, fixing the board on the cylinder by screws, coating a thermal insulation material on the board, coating an aluminum foil reflecting plate on the thermal insulation material, fixing the aluminum foil reflecting plate and the thermal insulation material on the board by screws, paying attention to the fact that the screws cannot penetrate through the board to prevent static electricity generated by a heating wire from being transmitted to the cylinder, winding a plurality of layers of insulated carbon fiber heating wires on the aluminum foil reflecting plate back and forth to form a heater, fixing the heating wire on the aluminum foil reflecting plate by a staple bolt, tightly attaching and fixing a probe of a temperature controller to the heating wire, installing a shield outside the heating wire, installing a speed regulator, a temperature controller and an anti-falling switch on the shield, connecting a lead of an electric fan with the speed regulator, connecting the heating wire with the temperature controller, connecting the temperature controller and a lead of the speed regulator with the anti-falling switch, connecting the anti-, the screws penetrate through the mounting holes of the foot rest lower cross beam and the mounting holes of the cooling and heating device, the nuts are screwed to fix the cooling and heating device on the foot rest lower cross beam, the cooling and heating device is formed by using an electric fan and a carbon fiber electric heating wire, the appearance volume is small, the cooling and heating device is mounted at the center of the dining table foot rest lower cross beam and cannot prevent people from having meals, the conducting slip ring and the lead of the cooling and heating device are connected with the anti-leakage plug, the anti-leakage plug is plugged into the power supply, the on-off switches of the inner heating ring, the outer heating ring and the frame heating ring are opened to simultaneously heat the central heating ring, the outer heating ring, the frame and the inner heating ring, the outer heating ring and the frame are opened, the temperature of the table top is changed by adjusting the temperature controller, when the outer heating ring is closed, only the central heating ring is heated, when the central heating ring is closed, only the outer heating ring and the frame are heated, when the inner heating ring, the, the table top is relatively flat, the dish is not easy to slide out of the table top and fall on the ground, the frame has no ice-cold feeling, the central heating ring is closed when the electromagnetic oven is arranged on the table top to eat a hot pot, the heat of the table top is prevented from baking the electromagnetic oven, the electric energy can be saved, the electric heating warming function is closed after the electric heating warming function is normal, the electric fan is opened to ensure that the electric fan is operated, the electric fan blows to the bottom surface of the table, the air is blocked by the bottom surface of the table to spread to the periphery, each person sitting beside the table feels cool, the fan only blows to the person and cannot blow to the table top, the dish and the electric heating warming function of the table top are not cooled by the fan, the electric fan is closed after the electric fan is operated normally, the heater is opened to adjust the temperature of the temperature adjusting switch, the heater is closed after the normal operation, each function is opened according to the needs to make, when the movable table top is not needed, the movable table top is detached, and the folding top leg is folded under the arc-shaped plate and is placed in a wooden box together with the arc-shaped plate to be dustproof or hung on a wall without occupying the ground.

Claims (8)

1. Can enlarge cool warm type electric heat dining table of desktop after the improvement, characterized by: a central heating ring (3) and an outer heating ring (4) which are wound by multilayer insulated electric heating wires (2) are arranged inside a central desktop (1), a panel (5) of the central desktop is arranged on the heating ring, a bottom plate (6) of the central desktop is arranged under the heating ring, the central heating ring and the outer heating ring are connected with a multi-probe temperature controller (7) and a temperature protective tube (8), the central heating ring and the outer heating ring are connected with an on-off switch (9) on the bottom surface of the central desktop, a frame heating ring (10) is wound on the frame of the central desktop, the frame heating is connected with a temperature control switch in a heating way, an electric appliance socket (11) for electric use of desktop is arranged outside the bottom surface of the central desktop, conducting slide rings (12) for preventing winding are connected with conducting wires of the central heating ring, the outer heating ring, the frame heating wire, the temperature controller and the electric appliance socket, a central shaft sleeve (13) for enabling the desktop to become an, an anti-overshoot central shaft (15) of a fixed foot rest (14) is inserted in the central shaft sleeve, an anti-drop locking screw I (16) of a shaft and a sleeve is arranged outside the shaft sleeve to lock the central shaft sleeve and the central shaft into a whole, a spring (17) for preventing the shaft from descending is sleeved outside the upper end of the anti-overshoot central shaft, a wire winding conductive slip ring is sleeved outside the spring, a bearing (18) which is isolated from the foot rest and rotates is sleeved at the lower end of the anti-overshoot central shaft, an adjusting nut (19) for eliminating the shaking of a central table top is screwed below the bearing, the bottom surface of the central table top and a rotating wheel (20) at the top end of the fixed foot rest form a sliding surface to change the central table top into a rotatable rotating disc, a rotation stopping pin (21) on the fixed foot rest is inserted into a rotation stopping hole of the central table top to prevent the central table top from rotating, an upper beam (22, the outer side of each hole is provided with a second anti-drop locking screw (25), the movable upper beam (27) and the movable lower beam (28) of the movable foot stool (26) are penetrated through the upper hole and the lower hole, the movable upper beam and the movable lower beam are locked with the fixed foot stool by the second anti-drop locking screw, the center of the lower beam of the fixed foot stool is provided with an electric fan (29), an overheat protector (30), a heat-insulating layer and a heater (31) are arranged outside the electric fan, leads of the electric fan, the overheat protector, the heater and a conductive slip ring are connected with a leakage-proof plug (32), the upper end of the movable foot stool is provided with a movable table top (33), hook feet (35) at two ends of a male plate (34) of the movable table top are inserted into hollow pipes of the movable foot stool to form fixed connection with the movable foot stool, clamp feet (36) at two ends of the male plate extend into clamp plates (38) at two ends of the movable, the folding top feet (39) of the male board and the female board of the movable table top are propped against the ground to prevent the arc shape from inclining outwards.

2. The improved cooling-heating electric heating table with the enlarged table top as claimed in claim 1, wherein the cooling-heating electric heating table is common cooling-heating table or single cooling-heating electric heating table, the common cooling-heating table is provided with both an electric fan and a heater, the single cooling electric heating table is provided with only an electric fan, and the single heating electric heating table is provided with only a heater.

3. The improved cooling and heating type electric heating dining table with the enlarged table top as claimed in claim 1, wherein the center table top is a rotatable turntable which can be operated manually or electrically, the center table top can be installed with an invisible induction cooker or heating furnace at the center of the table top, the center table top is a plate which is composed of a bottom plate and a face plate, one of the bottom plate and the face plate is installed with a plurality of layers of insulated electric heating wires and heat insulating materials and sliding sleeves and sliding beams, the other one is oppositely overlapped to enclose the electric heating wires and heat insulating materials and sliding sleeves and sliding beams, the bottom plate can be a wood plate or a plastic or a metal material or an organic glass or a composite material, and the face plate can be a stainless steel or glass or marble or jade or a ceramic or an aluminum plate or an iron plate or a composite material.

4. The improved cooling and heating type electric heating dining table with the enlarged table top as claimed in claim 1, wherein the multi-probe temperature controller can be one temperature controller with multiple probes, or two or more temperature controllers with segmented temperature control, and can be mechanical or electronic, or microcomputer or frequency conversion type.

5. A cool-warm type electric heating dining table with an enlarged table top as claimed in claim 1, wherein said center axis is prevented from being overshot, and said lower end of the axis is provided with a screw section for preventing the screw section from being overlong or with a plurality of limit protrusions for preventing the screw section from being overshot.

6. The improved cooling and heating type electric heating dining table with the enlarged table top as claimed in claim 1, wherein the movable table top can be heated and temperature-adjusted or not, the movable table top is erected on the movable foot supports by jointing four arc-shaped plates and clamping the clamping feet, two of the movable table top are male plates and two of the movable table top are female plates, the two male plates are installed at the front and the two female plates are installed at the rear and the left and the right.

7. The improved cooling and heating type electric heating dining table with the enlarged table top as claimed in claim 1, wherein the electric fan is an air-conditioning fan or an air conditioner.

8. The improved cooling and heating type electric heating dining table with the enlarged table top as claimed in claim 1, wherein the heater is a heating tube, a heating plate or a heating wire, and is installed outside the electric fan or on four columns of the stand.

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