CN210014429U

CN210014429U - Constant temperature frequency conversion electric heating stove

Info

Publication number: CN210014429U
Application number: CN201920602677.0U
Authority: CN
Inventors: 王旭生
Original assignee: Hebei Tongguo Science And Technology Development Co Ltd
Current assignee: Hebei Tongguo Science And Technology Development Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-04
Anticipated expiration: 2029-04-29

Abstract

The utility model relates to the technical field of electric power heat supply auxiliary devices, in particular to a constant temperature variable frequency electric heating stove which can ensure that an electric heating rod is not directly contacted with water, reduce the requirement on water quality, reduce the generation of scale and reduce the heating effect on the electric heating rod; the furnace comprises a furnace body, an inner container, a plurality of groups of electric heating rods, a water inlet pipe and a water outlet pipe, wherein a furnace cover is detachably arranged at the top of the furnace body, and a water feeding pump is arranged on the water inlet pipe; still include the baffle, lower baffle, multiunit spiral heating pipe, fixing base on the multiunit, fixing base under the multiunit, scavenge pipe and sealing plug, be provided with fixed orifices and multiunit lower fixed orifices on the multiunit on going up the baffle and being provided with the multiunit down on the baffle down, fixed orifices and multiunit lower fixed orifices department are gone up to multiunit spiral heating pipe top and bottom difference fixed mounting on the multiunit, the first region on furnace body right side is provided with the scavenge hole, scavenge pipe left end and inner bag intercommunication, scavenge pipe right-hand member and the furnace body in right side wall fixed connection, the inside first region of inner bag is provided with temperature sensor.

Description

Constant temperature frequency conversion electric heating stove

Technical Field

The utility model relates to an electric power heat supply auxiliary device's technical field especially relates to a constant temperature frequency conversion electric heating stove.

Background

As is well known, a constant-temperature variable-frequency electric heating furnace is a heating device which is used in daily life, converts electric energy into heat energy, heats water, and meets the heating requirement through the circulating flow of the heated water in a heating pipeline, and is widely used in the field of electric heating; the existing constant-temperature variable-frequency electric heating furnace comprises a furnace body, an inner container, a plurality of groups of electric heating rods, a water inlet pipe and a water outlet pipe, wherein a fixed cavity is arranged in the furnace body, a mounting hole is formed in the top of the furnace body and communicated with the fixed cavity, a furnace cover is detachably arranged on the top of the furnace body, the inner container is arranged in the furnace body, the plurality of groups of electric heating rods are arranged in the inner container, the output end of the water inlet pipe and the input end of the water outlet pipe penetrate through the furnace body and are respectively communicated with the lower half area and the; when the existing constant-temperature variable-frequency electric heating furnace is used, a water feeding pump is electrified and started, water to be heated is continuously led into an inner container through a water inlet pipe under the action of the water feeding pump, a plurality of groups of electric heating rods are electrified, the water in the inner container is heated through the plurality of groups of electric heating rods, and when the temperature of the water rises and is continuously discharged through a water outlet pipe, the water can flow to different heating equipment so as to perform indoor heating; present constant temperature frequency conversion electric heating stove is used the discovery, and the electric heating stick is direct to heat water with water contact, and is higher to the requirement of quality of water, produces the adhesion of incrustation scale easily on the electric heating stick outer wall, influences the heating effect of electric heating stick.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can make the electrical heating stick not direct with water contact, reduce the requirement to quality of water, reduce the production of incrustation scale, reduce the constant temperature frequency conversion electric heating stove to the influence of electrical heating stick heating effect.

The utility model discloses a constant temperature variable frequency electric heating stove, including furnace body, inner bag, multiunit electrical heating rod, inlet tube and outlet pipe, be provided with fixed chamber in the furnace body to be provided with the installing port at the furnace body top, the installing port communicates with each other with fixed chamber, the furnace body top can be dismantled and be provided with the bell, the inner bag is installed inside the furnace body, inlet tube output end and outlet pipe input all pass the furnace body and communicate with the first region and the second region of inner bag respectively, be provided with the water feeding pump on the inlet tube; the upper baffle plate and the lower baffle plate are respectively transversely arranged in the upper half area and the lower half area of the liner, a plurality of groups of upper fixing holes and a plurality of groups of lower fixing holes are arranged on the upper baffle plate and the lower baffle plate, the plurality of groups of spiral heating pipes are all positioned between the upper baffle plate and the lower baffle plate, the top ends and the bottom ends of the plurality of groups of spiral heating pipes are respectively and fixedly arranged in the plurality of groups of upper fixing holes and the plurality of groups of lower fixing holes, the plurality of groups of upper fixing seats and the plurality of groups of lower fixing seats are respectively arranged at the bottom of the upper baffle plate and the top of the lower baffle plate, the top ends and the bottom ends of the plurality of groups of electric heating rods are respectively and fixedly arranged on the plurality of groups of upper fixing seats and the plurality of groups of lower fixing seats, the upper half area on the right side of the furnace body is provided with the ventilation holes, the, the sealing plug is arranged at the ventilation hole, and the upper half area inside the inner container is provided with a temperature sensor.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes locating plate, two sets of locating lever and fixed spring, two sets of locating lever left end and right-hand member are connected with furnace body right side wall and locating plate left side wall respectively, both ends are connected with sealing plug right-hand member and locating plate left side wall respectively about the fixed spring.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes gag lever post and stopper, locating plate central area is provided with spacing hole, the gag lever post left end passes spacing hole and is connected with the sealing plug, the stopper is installed at the gag lever post right-hand member.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes motor, transmission shaft and multiunit flabellum, the motor is installed in furnace body bottom central authorities region, the transmission shaft bottom is installed at motor top output to the transmission shaft top passes furnace body bottom and lower baffle central authorities region in proper order, and is provided with two sets of mechanical seal spare respectively with baffle contact department down in transmission shaft and furnace body bottom, the multiunit flabellum is all installed at transmission shaft first region, and the multiunit flabellum all is located the baffle and between the baffle down.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes arc cardboard and multiunit lower arc cardboard on bracing piece, multiunit lower support bar, the multiunit, bracing piece and multiunit lower support bar one end are connected with furnace body inner wall first region and second region respectively on the multiunit to the bracing piece is connected with arc cardboard and multiunit lower arc cardboard on the multiunit respectively to the bracing piece and the multiunit lower support bar other end on the multiunit, arc cardboard and multiunit lower arc cardboard contact with inner bag top and bottom respectively on the multiunit.

The utility model discloses a constant temperature frequency conversion electric heating stove, furnace body bottom central zone is provided with the multiunit louvre to be provided with the dust screen bottom the furnace body.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes spacing ring and multiunit dead lever, the spacing ring cover is established outside the scavenge pipe, multiunit dead lever both ends respectively with spacing ring and the internal right side wall connection of furnace.

The utility model discloses a constant temperature frequency conversion electric heating stove still includes backup pad and two sets of stiffener, the backup pad is installed in furnace body right side wall second region, upward water pump fixed mounting is in the backup pad, two sets of stiffener both ends are connected with furnace body right side wall bottom and backup pad bottom respectively.

Compared with the prior art, the beneficial effects of the utility model are that: a plurality of groups of electric heating rods are fixed between an upper clapboard and a lower clapboard, an upper water pump is electrified and started, water is led into an inner container through a water inlet pipe under the action of the upper water pump and enters a plurality of groups of spiral heating pipes, the plurality of groups of electric heating rods are electrified simultaneously, the plurality of groups of electric heating plates heat the air between the upper clapboard and the lower clapboard, hot air exchanges heat with the water in the plurality of groups of spiral heating pipes to raise the water temperature, the heated water enters an area above the upper clapboard to be converged and then is discharged into each heating device through a water outlet pipe to be circulated to be used in each heating device, so that the electric heating rods are not directly contacted with the water, the requirement on the water quality is reduced, the generation of scale is reduced, the heating effect on the electric heating rods is reduced, when the electric heating rods heat or do not heat and cool the air, the air can expand with heat and contract with cold, the sealing plugs can, reduce the damage that the pressure change caused whole, can pass through the temperature of the water after temperature sensor real-time supervision heating simultaneously, after the temperature reached the settlement temperature, can stop to circular telegram the electrical heating stick, when the temperature was less than the settlement temperature, circular telegram the electrical heating stick once more to can continue to utilize water.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of the connection of the drive shaft and the fan blade;

FIG. 4 is a schematic connection diagram of the upper fixing base, the lower fixing base and the electric heating rod;

in the drawings, the reference numbers: 1. a furnace body; 2. an inner container; 3. an electrical heating rod; 4. a water inlet pipe; 5. a water outlet pipe; 6. a furnace cover; 7. feeding a water pump; 8. an upper partition plate; 9. a lower partition plate; 10. a spiral heating pipe; 11. an upper fixed seat; 12. a lower fixed seat; 13. a ventilation tube; 14. a sealing plug; 15. a temperature sensor; 16. positioning a plate; 17. positioning a rod; 18. fixing the spring; 19. a limiting rod; 20. a limiting block; 21. a motor; 22. a drive shaft; 23. a fan blade; 24. a mechanical seal; 25. an upper support rod; 26. a lower support bar; 27. an upper arc-shaped clamping plate; 28. a lower arc-shaped clamping plate; 29. a dust screen; 30. a limiting ring; 31. fixing the rod; 32. a support plate; 33. a reinforcing rod.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses a constant temperature variable frequency electric heating stove, including furnace body 1, inner bag 2, multiunit electric heating rod 3, inlet tube 4 and outlet pipe 5, be provided with fixed chamber in the furnace body 1, and be provided with the installing port at furnace body 1 top, the installing port communicates with each other with fixed chamber, furnace cover 6 can be dismantled at furnace body 1 top, inner bag 2 is installed in furnace body 1, inlet tube 4 output and outlet pipe 5 input all pass through furnace body 1 and communicate with the lower half region and the upper half region of inner bag 2 respectively, be provided with water pump 7 on the inlet tube 4; the furnace body is characterized by further comprising an upper partition plate 8, a lower partition plate 9, a plurality of groups of spiral heating pipes 10, a plurality of groups of upper fixing seats 11, a plurality of groups of lower fixing seats 12, ventilation pipes 13 and a sealing plug 14, wherein the upper partition plate 8 and the lower partition plate 9 are respectively transversely arranged in the upper half area and the lower half area of the inner container 2, a plurality of groups of upper fixing holes and a plurality of groups of lower fixing holes are arranged on the upper partition plate 8 and the lower partition plate 9, the plurality of groups of spiral heating pipes 10 are respectively positioned between the upper partition plate 8 and the lower partition plate 9, the top ends and the bottom ends of the plurality of groups of spiral heating pipes 10 are respectively fixedly arranged in the plurality of groups of upper fixing holes and the plurality of groups of lower fixing holes, the plurality of groups of upper fixing seats 11 and the plurality of groups of lower fixing seats 12 are respectively arranged at the top end and the bottom end of the plurality of groups of electric, the right end of the air exchange tube 13 is fixedly connected with the right side wall in the furnace body 1, the sealing plug 14 is arranged at the air exchange hole, and the upper half area in the inner container 2 is provided with a temperature sensor 15; a plurality of groups of electric heating rods are fixed between an upper clapboard and a lower clapboard, an upper water pump is electrified and started, water is led into an inner container through a water inlet pipe under the action of the upper water pump and enters a plurality of groups of spiral heating pipes, the plurality of groups of electric heating rods are electrified simultaneously, the plurality of groups of electric heating plates heat the air between the upper clapboard and the lower clapboard, hot air exchanges heat with the water in the plurality of groups of spiral heating pipes to raise the water temperature, the heated water enters an area above the upper clapboard to be converged and then is discharged into each heating device through a water outlet pipe to be circulated to be used in each heating device, so that the electric heating rods are not directly contacted with the water, the requirement on the water quality is reduced, the generation of scale is reduced, the heating effect on the electric heating rods is reduced, when the electric heating rods heat or do not heat and cool the air, the air can expand with heat and contract with cold, the sealing plugs can, reduce the damage that the pressure change caused whole, can pass through the temperature of the water after temperature sensor real-time supervision heating simultaneously, after the temperature reached the settlement temperature, can stop to circular telegram the electrical heating stick, when the temperature was less than the settlement temperature, circular telegram the electrical heating stick once more to can continue to utilize water.

The utility model discloses a constant temperature frequency conversion electric heating stove, still include locating plate 16, two sets of locating levers 17 and fixed spring 18, two sets of locating levers 17 left end and right-hand member respectively with furnace body 1 right side wall and locating plate 16 left side wall connection, fixed spring 18 left and right ends respectively with sealing plug 14 right-hand member and locating plate 16 left side wall connection; can be through the position of two sets of locating levers fixed positioning plate to can make sealing plug and locating plate indirect connection through fixed spring, when leading to pressure to change because expend with heat and contract with cold in the inner bag, can make the sealing plug move left or right, tensile or compression fixed spring admits air or gassing through the scavenge hole, when the inner bag pressure drop resumes normally gradually, the sealing plug gets back to scavenge hole department under fixed spring's elastic force effect.

The utility model discloses a constant temperature frequency conversion electric heating stove, still include gag lever post 19 and stopper 20, locating plate 16 central area is provided with the spacing hole, and 19 left ends pass the spacing hole and are connected with sealing plug 14, and stopper 20 is installed at 19 right-hand members of gag lever post; when the sealing plug moves left and right, the left and right moving directions of the sealing plug can be conveniently limited through the left and right moving of the limiting rod at the limiting hole, and the limiting block can play a certain limiting role in the maximum degree of the left moving of the sealing plug.

The utility model discloses a constant temperature frequency conversion electric heating stove, still include motor 21, transmission shaft 22 and multiunit flabellum 23, motor 21 installs in furnace body 1 bottom central zone, the output of transmission shaft 22 bottom is installed at motor 21 top, and the transmission shaft 22 top passes furnace body 1 bottom and lower baffle 9 central zone in proper order, and is provided with two sets of mechanical seal 24 respectively at transmission shaft 22 and furnace body 1 bottom and lower baffle 9 contact department, multiunit flabellum 23 all installs in transmission shaft 22 first half area, and multiunit flabellum 23 all is located between upper baffle 8 and lower baffle 9; when heating water, with the motor circular telegram and start, the motor passes through the transmission shaft and drives the multiunit flabellum and rotate to can make the air in the furnace body flow, make the air temperature of each part in the furnace body similar, thereby can further improve the heating degree of consistency to water.

The utility model discloses a constant temperature frequency conversion electric heating stove, still include multiunit upper strut pole 25, multiunit lower strut pole 26, multiunit upper arc cardboard 27 and multiunit lower arc cardboard 28, multiunit upper strut pole 25 and multiunit lower strut pole 26 one end are connected with the first region and the second region of furnace body 1 inner wall respectively, and multiunit upper strut pole 25 and multiunit lower strut pole 26 other end are connected with multiunit upper arc cardboard 27 and multiunit lower arc cardboard 28 respectively, multiunit upper arc cardboard 27 and multiunit lower arc cardboard 28 contact with 2 tops of inner bag and bottoms respectively; the positions of the arc-shaped clamping plates and the positions of the arc-shaped clamping plates under the groups can be fixed by the groups of upper supporting rods and the groups of lower supporting rods, and the positions of the inner container in the furnace body are fixed by the groups of upper arc-shaped clamping plates and the groups of lower arc-shaped clamping plates.

The utility model discloses a constant temperature variable frequency electric heating stove, the central region of the bottom of the stove body 1 is provided with a plurality of groups of heat dissipation holes, and the bottom of the stove body 1 is provided with a dust screen 29; the heat that the motor gathered the production at the course of the work can be passed through the multiunit louvre and is gone out to can reduce the impurity in the air through the dust screen and get into in the furnace body.

The utility model discloses a constant temperature frequency conversion electric heating stove, still include spacing ring 30 and multiunit dead lever 31, spacing ring 30 cover is established outside scavenge pipe 13, multiunit dead lever 31 both ends are connected with spacing ring 30 and furnace body 1 inside right side wall respectively; the position of the limiting ring can be fixed through a plurality of groups of fixing rods, and the position of the ventilation pipe can be supported and limited to a certain extent through the limiting ring.

The utility model discloses a constant temperature variable frequency electric heating stove, still include backup pad 32 and two sets of stiffener 33, backup pad 32 is installed in the lower half region of furnace body 1 right side wall, and upper water pump 7 is fixedly installed on backup pad 32, and two ends of two sets of stiffener 33 are connected with furnace body 1 right side wall bottom and backup pad 32 bottom respectively; the position of the water pump can be conveniently supported and fixed through the supporting plate, and the position of the supporting plate can be fixed through the two groups of reinforcing rods.

The utility model discloses a constant temperature frequency conversion electric heating stove, it is at the during operation, fix multiunit electric heating rod between last baffle and lower baffle, switch on and start the water feeding pump, make water lead-in inner bag through the inlet tube under the effect of water feeding pump in, and enter multiunit spiral heating pipe, switch on multiunit electric heating rod simultaneously, multiunit electric heating plate heats the air between last baffle and lower baffle, hot-air carries out the heat exchange with the water in the multiunit spiral heating pipe, make the temperature rise, water after the intensification passes through entering upper baffle top region and joins the back and emits into through the outlet pipe, circulate to each heating equipment and use, thereby can make electric heating rod not direct with water contact, reduce the requirement to quality of water, reduce the production of incrustation scale, reduce the heating effect to electric heating rod, when electric heating rod heats the air or does not heat the cooling, can make the air take place expend with heat and contract with cold, the sealing plug can be taken down and ventilated through the ventilation pipe, the damage to the whole body caused by pressure change is reduced, meanwhile, the temperature of the heated water can be monitored in real time through the temperature sensor, when the water temperature reaches the set temperature, the electric heating rod can be stopped to be electrified, when the water temperature is lower than the set temperature, the electric heating rod is electrified again, so that the water can be continuously utilized, the position of the positioning plate can be fixed through two groups of positioning rods, the sealing plug can be indirectly connected with the positioning plate through the fixing spring, when the pressure in the inner container changes due to expansion caused by heat and contraction caused by cold, the sealing plug can move leftwards or rightwards, the fixing spring is stretched or compressed, air enters or exits through the ventilation hole, when the pressure drop in the inner container gradually returns to the ventilation hole under the elastic force of the fixing spring, when the sealing plug moves leftwards, the left and right moving direction of the sealing plug can be conveniently limited through the left and right moving of the limiting rod at the limiting hole, and the limiting block can play a certain limiting role in the maximum degree of the left moving of the sealing plug, when water is heated, the motor is electrified and started, the motor drives a plurality of groups of fan blades to rotate through the transmission shaft, so that the air in the furnace body can flow, the air temperature of each part in the furnace body is similar, the water heating uniformity can be further improved, the positions of a plurality of groups of upper arc-shaped clamping plates and a plurality of groups of lower arc-shaped clamping plates can be fixed through a plurality of groups of upper supporting rods and a plurality of groups of lower supporting rods, the positions of the inner container in the furnace body can be fixed through the plurality of groups of upper arc-shaped clamping plates and the plurality of groups of lower arc-shaped clamping plates, the heat generated, can fix the position of spacing ring through the multiunit dead lever to can play certain support and limited action to the position of breather pipe through the spacing ring, can conveniently support the position of fixed water pump through the backup pad, and can play certain fixed action to the position of backup pad through two sets of stiffeners.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A constant-temperature variable-frequency electric heating stove comprises a stove body (1), a liner (2), a plurality of groups of electric heating rods (3), a water inlet pipe (4) and a water outlet pipe (5), wherein a fixed cavity is arranged in the stove body (1), a mounting hole is formed in the top of the stove body (1) and communicated with the fixed cavity, a stove cover (6) is detachably arranged on the top of the stove body (1), the liner (2) is mounted inside the stove body (1), the output end of the water inlet pipe (4) and the input end of the water outlet pipe (5) penetrate through the stove body (1) and are respectively communicated with the lower half area and the upper half area of the liner (2), and a water feeding pump (7) is arranged on; the device is characterized by further comprising an upper partition plate (8), a lower partition plate (9), a plurality of groups of spiral heating pipes (10), a plurality of groups of upper fixing seats (11), a plurality of groups of lower fixing seats (12), a plurality of groups of ventilating pipes (13) and a sealing plug (14), wherein the upper partition plate (8) and the lower partition plate (9) are respectively and transversely arranged in the upper half area and the lower half area of the inner container (2), a plurality of groups of upper fixing holes and a plurality of groups of lower fixing holes are formed in the upper partition plate (8) and the lower partition plate (9), the plurality of groups of spiral heating pipes (10) are respectively arranged between the upper partition plate (8) and the lower partition plate (9), the top ends and the bottom ends of the plurality of groups of spiral heating pipes (10) are respectively and fixedly arranged in the plurality of groups of upper fixing holes and the plurality of groups of lower fixing holes, the plurality of groups of upper fixing seats (11) and the plurality of groups of lower fixing seats (12) are respectively arranged at the bottom of On the seat (12), the first half of the area on the right side of the furnace body (1) is provided with a ventilation hole, the left end of the ventilation pipe (13) is communicated with the inner container (2), the right end of the ventilation pipe (13) is fixedly connected with the inner right side wall of the furnace body (1), the sealing plug (14) is installed at the ventilation hole, and the first half of the area inside the inner container (2) is provided with a temperature sensor (15).

2. The constant-temperature variable-frequency electric heating stove as claimed in claim 1, further comprising a positioning plate (16), two sets of positioning rods (17) and a fixing spring (18), wherein the left end and the right end of each set of positioning rods (17) are respectively connected with the right side wall of the stove body (1) and the left side wall of the positioning plate (16), and the left end and the right end of the fixing spring (18) are respectively connected with the right end of the sealing plug (14) and the left side wall of the positioning plate (16).

3. The constant-temperature variable-frequency electric heating stove as claimed in claim 2, further comprising a limiting rod (19) and a limiting block (20), wherein a limiting hole is formed in the central area of the positioning plate (16), the left end of the limiting rod (19) penetrates through the limiting hole and is connected with the sealing plug (14), and the limiting block (20) is installed at the right end of the limiting rod (19).

4. The constant-temperature variable-frequency electric heating stove as claimed in claim 3, characterized by further comprising a motor (21), a transmission shaft (22) and a plurality of sets of blades (23), wherein the motor (21) is installed in the central region of the bottom in the stove body (1), the bottom end of the transmission shaft (22) is installed at the top output end of the motor (21), the top end of the transmission shaft (22) sequentially penetrates through the central regions of the bottom and the lower partition plate (9) of the stove body (1), two sets of mechanical sealing elements (24) are respectively arranged at the contact positions of the transmission shaft (22) and the bottom and the lower partition plate (9) of the stove body (1), the plurality of sets of blades (23) are all installed in the upper region of the transmission shaft (22), and the plurality of sets of blades (23) are all located between the upper.

5. The constant-temperature variable-frequency electric heating stove as claimed in claim 4, further comprising a plurality of groups of upper support rods (25), a plurality of groups of lower support rods (26), a plurality of groups of upper arc-shaped clamping plates (27) and a plurality of groups of lower arc-shaped clamping plates (28), wherein one ends of the plurality of groups of upper support rods (25) and the plurality of groups of lower support rods (26) are respectively connected with the upper half area and the lower half area of the inner wall of the stove body (1), the other ends of the plurality of groups of upper support rods (25) and the plurality of groups of lower support rods (26) are respectively connected with the plurality of groups of upper arc-shaped clamping plates (27) and the plurality of groups of lower arc-shaped clamping plates (28), and the plurality of groups of upper arc-shaped clamping plates (27.

6. A constant temperature frequency conversion electric heating stove as claimed in claim 5, characterized in that the central area of the bottom of the stove body (1) is provided with a plurality of groups of heat dissipation holes, and the bottom of the stove body (1) is provided with a dust screen (29).

7. The constant-temperature variable-frequency electric heating stove as claimed in claim 6, further comprising a limiting ring (30) and a plurality of groups of fixing rods (31), wherein the limiting ring (30) is sleeved outside the ventilating pipe (13), and two ends of the plurality of groups of fixing rods (31) are respectively connected with the limiting ring (30) and the inner right side wall of the stove body (1).

8. A constant temperature frequency conversion electric heating stove as claimed in claim 7, characterized by further comprising a support plate (32) and two sets of reinforcing rods (33), the support plate (32) is installed in the lower half area of the right side wall of the stove body (1), the water feeding pump (7) is fixedly installed on the support plate (32), and two ends of the two sets of reinforcing rods (33) are respectively connected with the bottom end of the right side wall of the stove body (1) and the bottom of the support plate (32).