Strong-blast gas range

Abstract

The application discloses a strong-blast gas stove, comprising a nozzle and an ejector, and an upper air box for defining primary air is further formed, the outlet of the nozzle is located in the upper air box, and the top end of the upper air box and the inlet of the ejector are in communication, and the bottom end of the upper air box is in communication with air inlet passage and air inlet power equipment to provide primary air for the ejector. The strong-blast gas stove can adjust the rotating speed of the air blower according to the size of gas inlet, accurately provide the primary air amount, and through the setting of the upper air box, the primary air amount is limited, the burner is accurately combusted, the primary air amount is fully combusted, and the excess air coefficient is low, so that the strong-blast gas stove has high thermal efficiency and less smoke generated by combustion, and the technical problems of large smoke amount and low thermal efficiency of the atmospheric gas stove in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of gas stove technology, and in particular to a powerful blower gas stove. Background Technology

[0002] like Figure 1 As shown, the atmospheric gas stove in the related technology includes a bottom shell 200a and a panel 300a. The panel 300a is located on the bottom shell 200a and together with the bottom shell 200a defines a receiving cavity. A nozzle seat 400a is provided in the receiving cavity. An outer nozzle 410a and an inner nozzle 420a are respectively provided on the nozzle seat 400a, which pass upward through the liquid collection tray 500a and are located on the panel 300a. An outer gas inlet pipe 210a and an inner gas inlet pipe 220a are also provided in the receiving cavity. The outer nozzle 410a is connected to the main gas outlet of the stop valve 230a through the outer gas inlet pipe 210a, and the inner nozzle 420a is connected to the auxiliary gas outlet of the stop valve 230a through the inner gas inlet pipe 220a.

[0003] A burner 100a is mounted on an ejector 600a. The burner 100a includes an outer flame cap 110a and an inner flame cap 120a located at the center of the outer flame cap 110a. The ejector 600a includes an outer ejector tube 610a and an inner ejector tube 620a. A mixing chamber is formed between the burner 100a and the ejector 600a. Gas is ejected from the outer nozzle 410a and ejected through the outer ejector tube 610a, drawing in surrounding air for thorough mixing (commonly known as primary air), and then burns at the outlet of the outer flame cap 110a. The inner nozzle 420a is connected to the inner flame cap 120a via the inner ejector tube 620a. Gas is ejected from the inner nozzle 420a, drawing in some air, and then burns at the outlet of the inner flame cap 120a.

[0004] The aforementioned atmospheric gas stove uses natural draft, meaning that the primary air introduced at the ejector 600a is provided by the surrounding atmosphere. This can lead to a shortage of primary air, resulting in a large amount of secondary air being added during combustion at the burner. This results in a higher air coefficient (actual air consumption / theoretical air consumption), leading to increased flue gas emissions and impacting the indoor environment. Furthermore, the excessive amount of ambient temperature secondary air introduced lowers the temperature of the flue gas produced during combustion, thus reducing the overall thermal efficiency of the gas stove.

[0005] Therefore, the above-mentioned prior art has at least the following technical problems: the amount of flue gas produced by atmospheric gas stoves in the prior art is large and the thermal efficiency is low. Summary of the Invention

[0006] This application provides a powerful forced-draft gas stove, which solves the technical problem of large flue gas volume and low thermal efficiency in existing atmospheric gas stoves.

[0007] To solve the above-mentioned technical problems, this application provides a forced-draft gas stove, including a nozzle and an ejector. The forced-draft gas stove also has an upper air box for limiting primary air. The outlet of the nozzle is located in the upper air box, and the top of the upper air box is connected to the inlet of the ejector. The bottom of the upper air box is connected to an air intake power device through an air intake channel to provide primary air to the ejector.

[0008] Furthermore, the upper air box includes:

[0009] The upper air box cover is annular, with its top opening sealed around the outer peripheral wall of the ejector and its peripheral wall surrounding the nozzle outlet and ejector inlet. The bottom opening of the upper air box is attached to the upper surface of the panel, thereby forming the upper air box that defines the primary air.

[0010] Furthermore, the high-pressure gas stove includes a control panel with a liquid collection tray on it, and the upper air box includes:

[0011] The upper air box cover is annular, with its top opening sealed around the outer peripheral wall of the ejector and its peripheral wall surrounding the nozzle outlet and ejector inlet. The bottom opening of the upper air box is attached to the upper surface of the liquid collection tray, thereby forming the upper air box that limits the primary air.

[0012] Furthermore, the nozzle is mounted on a nozzle holder, the nozzle holder including a nozzle plate and nozzle feet supporting the nozzle plate, and the air intake channel including:

[0013] The lower air box is disposed on the bottom surface of the nozzle plate, and an air inlet is provided on the side of the lower air box, which is connected to the air intake power equipment.

[0014] At least one air outlet for the lower air box is provided on the nozzle plate, and an air outlet for the liquid collection tray is provided on the liquid collection tray, which is aligned with and connected to the air outlet for the lower air box. The lower air box is connected to the upper air box in sequence through the air outlet for the lower air box and the air outlet for the liquid collection tray, thereby forming the air intake channel that provides air to the upper air box.

[0015] Furthermore, the high-pressure gas stove also includes:

[0016] An air guide hood is provided at each air outlet of the lower air box. The inlet of the air guide hood is connected to the corresponding air outlet of the liquid collection tray. The outlet of the air guide hood is rotatably arranged along the inner circumferential wall of the liquid collection tray and stops on one side of the nozzle and ejector inlet, thereby guiding the air in the lower air box to spiral into the ejector in one direction.

[0017] Furthermore, the nozzle includes an outer nozzle and an inner nozzle, and the ejector includes an ejector body, an outer ejector tube, and an inner ejector tube. The outer ejector tube is disposed on the lower surface of the ejector body, and the inner ejector tube extends vertically through the central axis of the ejector body. The upper air box cover is fixed between the ejector and the liquid collection tray through the lower small flame connecting seat and the upper small flame connecting seat.

[0018] The bottom end of the lower small flame connector is sleeved on the inner nozzle, the top end of the lower small flame connector extends vertically upward into the inner ejector tube, and the outer peripheral wall of the top end of the lower small flame connector is provided with external threads.

[0019] The upper small flame connector is located inside the inner ejector tube. The inner circumferential wall of the upper small flame connector is provided with an internal thread. The upper small flame connector and the lower small flame connector are tightened by the external thread and the internal thread, thereby fixing the ejector and the upper air box cover.

[0020] Furthermore, the lower small flame connector and the upper small flame connector are hollow and connected to each other to connect the inner nozzle and the upper small flame connector, so that the inner flame cap provided on the upper small flame connector can obtain gas.

[0021] At least one air inlet is provided on the outer peripheral wall at the bottom of the lower small flame connector. The air inlet is connected to the inner nozzle and the upper air box inside the lower small flame connector, so that the inner nozzle receives primary air, thereby allowing the inner flame cap on the upper small flame connector to receive air.

[0022] Furthermore, the high-pressure gas stove is also equipped with an upper air intake channel, through which the gas stove obtains primary air.

[0023] Furthermore, the high-pressure gas stove also includes a bottom shell, which is located below the panel and together with the bottom shell defines an accommodating cavity. The upper air box cover includes a first annular surface at the upper end and a second annular surface at the lower end. The inner diameter of the second annular surface is larger than that of the first annular surface, and the top end of the second annular surface is integrally connected to the bottom end of the first annular surface. The bottom end of the second annular surface is provided with an upper air box cover foot that supports the second annular surface.

[0024] The liquid holding tray includes a base mounted on the panel and a tray body mounted on the base. The tray body includes a bottom surface of the tray body and a peripheral wall of the tray body connected to the bottom surface of the tray body. The top opening of the peripheral wall of the tray body is folded outward and extends downward to form a folded edge. A first annular gap is formed between the folded edge and the peripheral wall of the liquid holding tray.

[0025] The folded edge is fitted with the inner wall of the first annular surface with a clearance, and a second annular gap is formed between the folded edge and the second annular surface. An upper air inlet is provided on the folded edge to connect the first annular gap and the second annular gap.

[0026] The upper air box cover bracket is placed on the base of the liquid collection tray, and the open second annular surface forms an upper air inlet gap between the liquid collection tray and the base of the liquid collection tray to allow air to enter.

[0027] The upper air inlet gap, the second annular gap, the upper air inlet, the first annular gap, and the receiving cavity are connected in sequence to form the upper air inlet channel.

[0028] Furthermore, the high-pressure gas stove also includes a burner, which includes an outer flame cap, which is an infrared combustion plate. The infrared combustion plate is annular and includes a combustion plate body that performs combustion. The combustion plate body is fixed to the combustion plate fixing ring by a combustion plate pressure ring.

[0029] The infrared combustion plate also includes an inner ring positioning ring, which includes an inner ring positioning ring body for inserting into the center of the infrared combustion plate and fitting with the inner peripheral wall of the infrared combustion plate. The inner ring positioning ring body overlaps with the combustion plate fixing ring to completely cover the inner ring wall of the combustion plate body.

[0030] The top surface of the inner positioning ring body is provided with an outwardly folded edge that extends to the combustion plate body to cover the gap between the combustion plate body and the inner positioning ring body, thereby preventing air leakage from the inner peripheral wall of the combustion plate body.

[0031] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0032] (1) The forced-draft gas stove of the present invention can adjust the speed of the blower according to the amount of gas intake to accurately provide the primary air volume. By setting the upper air box to limit the primary air volume, the burner can ensure accurate combustion, which can achieve complete combustion and has a low excess air coefficient. As a result, the forced-draft gas stove of the present invention has high thermal efficiency and produces less smoke. In addition, the primary air is confined in the upper air box and does not overflow, which also reduces heat loss. Therefore, the forced-draft gas stove of the present invention effectively solves the technical problem of large smoke volume and low thermal efficiency of atmospheric gas stoves in the prior art.

[0033] (2) The forced-air gas stove of the present invention achieves precise supply of primary air by adding an upper air box cover, a blower and a lower air box. The upper air box cover is set between the ejector and the liquid tray, the blower is set inside the bottom shell of the gas stove and the lower air box is set on the nozzle seat. It does not require to destroy the original structure and assembly relationship of the upper air intake gas stove, and the modification cost is low and it is easy to promote. On the contrary, if an additional blower system unrelated to the traditional stove is added to the ejector to form primary air replenishment, the modification is too big, which will greatly increase the modification difficulty and modification cost, and it will be difficult to promote.

[0034] (3) The lower air box is equipped with two lower air box inlets, which are located on both sides of the lower air box to match the placement of the blower, making it highly practical.

[0035] (4) By setting up an air guide hood, the air in the lower air box is guided to spiral into the ejector in one direction (clockwise or counterclockwise). The rotating air absorbs the heat transferred downward during combustion and quickly enters the ejector, so that the heat returns to the heating zone. On the one hand, it reduces the heat transfer from the heating zone to the non-heating zone and reduces the temperature rise of the non-heating zone. On the other hand, it reduces the heat loss in the heating zone and further improves the thermal efficiency.

[0036] (5) The upper air box cover is stabilized between the ejector and the liquid tray through the upper small flame connecting seat and the lower small flame connecting seat. At the same time, the inner nozzle, upper air box and inner flame cover are connected through the upper small flame connecting seat and the lower small flame connecting seat without changing the original structure and assembly relationship of the upper air intake gas stove.

[0037] (6) The high-pressure gas stove has an upper air intake channel above the panel. The high-pressure gas stove obtains primary air through the upper air intake channel and can restore the upper air intake when necessary.

[0038] (7) The infrared combustion plate is also equipped with an inner positioning ring, which can prevent the gas in the mixing chamber from escaping and also position the combustion plate body on the combustion plate fixing ring.

[0039] In summary, the forced draft gas stove of the present invention has the advantages of high thermal efficiency and less smoke produced during combustion. In addition, the forced draft gas stove of the present invention can be directly modified based on the existing top-intake atmospheric gas stove without damaging the structure and assembly relationship of the original top-intake gas stove, which has low modification cost and is easy to promote. Attached Figure Description

[0040] Figure 1 This is an exploded structural diagram of an atmospheric gas stove in related technologies;

[0041] Figure 2 This is a schematic diagram of the overall structure of a forced-air gas stove according to one embodiment of the present invention;

[0042] Figure 3 This is an exploded structural diagram of a forced-air gas stove according to one embodiment of the present invention;

[0043] Figure 4 This is a cross-sectional view of a forced-air gas stove according to an embodiment of the present invention;

[0044] Figure 5 yes Figure 3 Enlarged view of the middle section structure;

[0045] Figure 6 This is a schematic diagram of the structure of the upper wind box cover according to one embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the ejector according to one embodiment of the present invention;

[0047] Figure 8 This is a schematic diagram of another embodiment of the present invention in which the upper wind box cover and the ejector are integrally set;

[0048] Figure 9 This is a schematic diagram of the nozzle seat according to one embodiment of the present invention;

[0049] Figure 10 This is a schematic diagram of the nozzle seat according to another embodiment of the present invention;

[0050] Figure 11 This is a schematic diagram of the structure of an air guide cover according to an embodiment of the present invention;

[0051] Figure 12 This is a schematic diagram of the structure of the air guide cover and nozzle seat according to an embodiment of the present invention;

[0052] Figure 13 This is a schematic diagram of the structure of the air guide cover, nozzle seat, and liquid tray in accordance with an embodiment of the present invention;

[0053] Figure 14 This is a schematic diagram of the structure of the lower small fire connecting seat according to an embodiment of the present invention;

[0054] Figure 15 This is a schematic diagram of the upper small fire connecting seat according to an embodiment of the present invention;

[0055] Figure 16 This is an exploded view of the structure of a forced-air gas stove according to another embodiment of the present invention;

[0056] Figure 17 yes Figure 16 Enlarged schematic diagram of the middle section structure;

[0057] Figure 18 This is a schematic diagram of the upper windbox cover according to another embodiment of the present invention;

[0058] Figure 19 This is an exploded view of the liquid-holding tray according to another embodiment of the present invention;

[0059] Figure 20 This is a schematic diagram of the structure of the air guide cover, nozzle seat, and liquid tray in another embodiment of the present invention.

[0060] Figure 21This is a partial structural cross-sectional view (excluding the burner) of a forced-draft gas stove according to another embodiment of the present invention;

[0061] Figure 22 This is a partial structural cross-sectional view (including burner and sheet metal outer burner cap) of a forced-draft gas stove according to another embodiment of the present invention.

[0062] Figure 23 This is a partial structural cross-sectional view (including burner and infrared combustion plate) of a forced-draft gas stove according to another embodiment of the present invention.

[0063] Figure 24 yes Figure 23 Enlarged view of the mid-infrared combustion plate;

[0064] Figure 25 yes Figure 22 Exploded view of the mid-infrared combustion plate. Detailed Implementation

[0065] This application provides a powerful forced-draft gas stove, which solves the technical problem of large flue gas volume and low thermal efficiency in existing atmospheric gas stoves.

[0066] To address the aforementioned technical problems, the overall approach of the technical solution provided in this application is as follows:

[0067] The forced-draft gas stove of this invention can adjust the blower speed according to the amount of gas intake to accurately provide the primary air volume. By setting an upper air box to limit this primary air volume, it ensures precise combustion of the burner, achieving both complete combustion and a low excess air coefficient. As a result, the forced-draft gas stove of this invention has high thermal efficiency and produces less smoke. In addition, the primary air is confined within the upper air box and does not overflow, which also reduces heat loss. Therefore, the forced-draft gas stove of this invention effectively solves the technical problems of large smoke volume and low thermal efficiency in atmospheric gas stoves in the prior art.

[0068] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of this application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0069] In the embodiments of this application, the direction facing the bottom of the pot when the gas stove is in use is defined as the upper direction (or top), and the direction facing the panel cabinet or the ground is defined as the lower direction (or bottom).

[0070] Please see Figures 2-3This invention discloses a forced-draft gas stove, which, compared to the aforementioned atmospheric top-intake gas stoves, further includes an upper air box for limiting primary air intake. All nozzles are located within this upper air box, and the upper end of the upper air box is connected to the ejector inlet. The lower end of the upper air box is connected to a blower 1000 (air intake power equipment) via an air intake channel. The blower 1000 supplies air to the upper air box through the air intake channel, and the upper air box provides primary air to the ejector 600. The blower 1000 is disposed within a cavity defined by the panel 300 and the bottom shell.

[0071] Specifically, the upper air box is used to limit the primary air, meaning that all the primary air supplied by the blower 1000 is contained within the upper air box and does not overflow, thereby ensuring that the amount of primary air is accurately supplied to the ejector 600. The aforementioned nozzle includes at least one outer nozzle 410 and at least one inner nozzle 420. For example, in some embodiments of this application, a forced-draft gas stove includes two outer nozzles 410 and one inner nozzle 420, such as... Figure 3 As shown.

[0072] It should be noted that the ejector 600 includes an ejector body 650, an outer ejector tube 610, and an inner ejector tube. The aforementioned ejector inlet includes an outer ejector tube inlet and an inner ejector tube inlet. The outer ejector tube inlet and the outer nozzle 410 correspond to and are connected to each other, and the inner ejector tube inlet and the inner nozzle 420 correspond to and are connected to each other to introduce gas and air respectively. In addition, the outlets of the outer ejector tube 610 and the inner ejector tube are both connected to the ejector body 650.

[0073] It should be noted that the inner ejector tube of the ejector 600 can be a straight tube type inner ejector tube 620 that runs vertically through the central axis of the ejector body 650, such as... Figure 1 , 7 As shown; it can also be a rotating inner ejector tube that is rotatably mounted on the bottom surface of the ejector body 650, just like the outer ejector tube 610.

[0074] The containment cavity is equipped with an external gas inlet pipe 210 and an internal gas inlet pipe 220. The inlet of the external nozzle 410 is connected to the main outlet of the stopcock valve 230 via the external gas inlet pipe 210, and the inlet of the internal nozzle 420 is connected to the auxiliary outlet of the stopcock valve 230 via the internal gas inlet pipe 220. Gas is ejected from the external nozzle 410 and ejected through the external ejector pipe 610, drawing air from the upper air box into the mixing chamber for thorough mixing, and then burning at the outlet of the external burner cap 110. Gas is ejected from the internal nozzle 420, drawing air from the upper air box through the internal ejector pipe, and then burning at the outlet of the internal burner cap 120.

[0075] In summary, the forced-draft gas stove of the present invention can adjust the speed of the blower (1000 RPM) according to the amount of gas intake, precisely providing the primary air volume. Furthermore, by limiting this primary air volume through the upper air box, the burner (100) ensures precise combustion, achieving both complete combustion and a low excess air coefficient. This results in high thermal efficiency and low smoke production in the forced-draft gas stove of the present invention. Additionally, the primary air is confined within the upper air box, preventing overflow and reducing heat loss. Therefore, the forced-draft gas stove of the present invention effectively solves the technical problems of large smoke volume and low thermal efficiency in existing atmospheric gas stoves.

[0076] Furthermore, it should be noted that since the forced-draft gas stove of this invention precisely provides the primary air volume, the stopcock valve used in this gas stove also needs to meet the requirement of precise adjustment to accurately provide the gas volume, thereby ensuring complete combustion of the burner and a low excess air coefficient. For example, the stopcock valve developed by the applicant and described in patent application number 202210233252.3 (invention title: stopcock valve and gas stove containing the same) can meet this requirement, but since this stopcock valve is not within the scope of protection of this invention, it will not be described further here. Of course, any other stopcock valve that can achieve this function and is adaptable can also be used in the forced-draft gas stove of this invention, and is not limited here.

[0077] Of course, in order to achieve accurate gas supply, the gas pressure also needs to be kept stable. Therefore, the gas inlet pipe of a forced-draft gas stove must be equipped with a pressure regulating valve. Setting up a pressure regulating valve is existing technology and is not within the scope of protection claimed in the embodiments of this invention, so it will not be elaborated here.

[0078] Please see Figures 2-4 In some embodiments, the upper air box includes an upper air box cover 810, which is annular, preferably circular. The top opening 811 of the upper air box cover 810 is sealed around the outer peripheral wall of the ejector 600, and the bottom opening 812 of the upper air box is sealed on the upper surface of the liquid tray 500 or the panel 100 (when there is no liquid tray 500). The outer nozzle 410 and the inner nozzle 420 pass through the liquid tray 500. The peripheral wall of the upper air box cover 810 surrounds the outer nozzle 410, the inner nozzle 420, the inlet of the outer ejector tube 610, and the inlet of the inner ejector tube, thereby forming an upper air box that defines the primary air.

[0079] Specifically, the upper windbox cover 810 and the ejector 600 can be detachably configured as two independent components, which are then assembled during use, such as... Figure 6 , 7As shown. Of course, the upper windbox cover 810 and the ejector 600 can also be integrally formed as one component, that is, the top opening 811 of the upper windbox cover 810 is fixed to the outer peripheral wall of the ejector 600, as shown. Figure 8 As shown.

[0080] Please see Figure 3 In some embodiments, the liquid tray 500 includes a base 510 mounted on the mounting hole 110 of the panel 100. The base 510 is provided with a tray body 520. The annular wall of the tray body 520 extends upward. The bottom surface of the tray body 520 has a through hole for the outer nozzle 410 and the inner nozzle 420 to pass through. The upper air box cover 810 covers the tray body 520 and is fitted with the annular wall of the tray body 520 with a gap, thereby enclosing and forming an upper air box.

[0081] Please see Figure 9 , 10 In some embodiments, the nozzle seat 400 includes a nozzle plate 450 and a nozzle foot 460 supporting the nozzle plate 450. The air intake channel includes a lower air box 470 disposed on the bottom surface of the nozzle plate 450. A lower air box inlet 471 is provided on the side of the lower air box 470 and is connected to the blower 1000. A lower air box outlet 472 is provided on the nozzle plate 450 and is connected to the lower air box 470. A liquid tray 500 outlet 511 is provided on the disc 520 and is connected to the lower air box outlet 472. The lower air box 470 is connected to the upper air box through the liquid tray 500 outlet 511, thereby forming an air intake channel for the upper air box and supplementing the upper air box with air.

[0082] Specifically, the existing nozzle plate 450 has sufficient space on its bottom surface to accommodate the lower air box 470. The location, shape, and size of the lower air box 470 and its outlet 472 are all compatible with the existing structure of the nozzle holder 400, eliminating the need to alter the original structure and reducing modification costs. The air box 470 can be made relatively large, and correspondingly, the lower air box outlet 472 on the nozzle plate 450 can also be relatively large. Figure 9 As shown, a pair of lower air box outlets 472 are symmetrically arranged on the nozzle plate 450 along the line connecting the centers of the ignition needle 430 and the probe 480. This allows for smoother air intake into the upper air box, enabling the blower 1000 to operate at a lower speed, thus reducing its noise. Of course, as... Figure 10 As shown, the volume of the lower air box 470 can also be set to be smaller. In this case, the nozzle plate 450 is provided with a lower air box outlet 472 only on the side where the lower air box 470 is located.

[0083] Please see Figure 10In some embodiments, the lower air box 470 is provided with two lower air box inlets 471, which are located on both sides of the lower air box 470 to adapt to the placement position of the blower 1000. The lower air box inlet 471 that is easy to connect with the blower 1000 is put into use, while the other is blocked, so as to simultaneously adapt to the left and right blowers 1000 of the gas stove.

[0084] In summary, the forced-air gas stove of this invention achieves precise primary air supply by adding an upper air box cover 810, a blower 1000, and a lower air box 470. The upper air box cover 810 is located between the ejector 600 and the liquid collection tray 500, the blower 1000 is located inside the bottom shell 200 of the gas stove, and the lower air box 470 is located on the nozzle seat 400. This does not require damaging the original structure and assembly relationship of the upper air intake gas stove, resulting in low modification costs and easy promotion. Conversely, if an additional blower system unrelated to traditional stoves is added to the ejector 600 to form primary air replenishment, the modification would be too large, greatly increasing the difficulty and cost of modification, making it difficult to promote.

[0085] An ideal gas stove should have a high temperature in the heating zone (burner) and high heat transfer efficiency to the bottom of the pot; while the temperature in non-heating zones (such as the countertop, knobs, and inside the stove) should be less affected by the heating zone and should be lower.

[0086] To further improve thermal efficiency and reduce temperature rise in unheated areas, please refer to [link / reference]. Figure 3 , Figures 11-13 In some embodiments, an air guide hood 820 is provided for each air outlet 472 of the gas stove.

[0087] The air guide hood 820 is located inside the upper air box, which has a circular cross-sectional shape. The side wall of the air guide hood is fixed to the plate body 520 of the liquid collection tray 500 by the air guide hood screws 821. The inlet 821 of the air guide hood is connected to the air outlet 472 of the lower air box and the air outlet 511 of the liquid collection tray 500. The air guide hood 820 is spirally arranged along the inner peripheral wall of the plate body 520, and the outlet 822 of the air guide hood is located on one side of the inlet of the outer nozzle 410 and the outer ejector tube 610, so as to guide the air in the lower air box 470 into the ejector 600 in one direction (clockwise or counterclockwise). The rotating air absorbs the heat transferred downward during combustion of the burner 100 and quickly enters the ejector 600, so that the heat returns to the heating zone. On the one hand, it reduces the heat transfer from the heating zone to the non-heating zone, reducing the temperature rise of the non-heating zone. On the other hand, it reduces the heat loss in the heating zone, further improving the thermal efficiency.

[0088] The location and shape of the air guide cover 820 should be adapted to the original structure of the nozzle seat 400 and the ejector 600, avoiding or matching the structures of the ignition needle 430, probe 480, temperature probe on the nozzle seat and the outer ejector tube 610 and inner ejector tube on the ejector 600, so as not to change the original structure and assembly relationship of the gas stove.

[0089] The location, shape, and size of the air guide hood 820 must be adapted to the original structure of the liquid tray 500 and the ejector 600. Therefore, its shape is not very regular. In order to guide the quick and accurate installation of the air guide hood 820, in some embodiments, the inner bottom surface of the liquid tray 500 is provided with a guide edge 531 to guide the installation of the air guide hood 820. The guide edge 531 is set along the inner side of the liquid tray air outlet 530. During installation, the inner side of the air guide hood 820 is placed close to the guide edge 531.

[0090] The upper air box cover 810 must be stably positioned between the ejector 600 and the liquid collection tray 500. For ejectors with a rotating inner ejector tube, in some embodiments, the ejector 600 is fixed by tightening bolts onto the nozzle seat 400, thereby simultaneously...

[0091] Secured from the ejector and upper wind box cover 810.

[0092] For the ejector 600 with a straight-tube inner ejector tube 620, please refer to Figure 3 , 4 13. In some embodiments, the upper airbox cover 810 is fixed between the ejector 600 and the liquid collection tray 500 by providing an upper small flame connecting seat 830 and a lower small flame connecting seat 840, as detailed below: Please refer to Figure 3 , 4 In some embodiments, the bottom end of the lower small flame connector 840 is sleeved on the inner nozzle 420, and the outer wall of the lower small flame connector 840 is provided with a radially extending connecting piece 842. The connecting piece 842 is fixed to the nozzle plate 450 of the nozzle seat 400 by a connecting piece bolt 843. The top end of the lower small flame connector 840 extends vertically upward into the straight tube inner ejector tube 620, and the outer wall of the top end of the lower small flame connector 840 is provided with an external thread 844.

[0093] like Figure 4 , 12 As shown in Figure 14, the upper small flame connector 830 is located inside the straight-tube inner ejector tube 620. The upper small flame connector 830 is a through ring. The inner wall of the upper small flame connector 830 is provided with an internal thread. The top of the lower small flame connector 830 is tightened together with the upper small flame connector 840 through the cooperation of the external thread and the internal thread, thereby clamping the upper bellows cover 810 between the ejector 600 and the liquid collection tray 500.

[0094] Furthermore, the lower small burner connector 840 and the upper small burner connector 830 are hollow and interconnected, connecting the inner nozzle 420 and the upper small burner connector 830, thereby allowing the inner burner cap 120 on the upper small burner connector 830 to receive combustion gas. Simultaneously, multiple lower small burner connector air inlets 841 are provided on the outer peripheral wall at the bottom end of the lower small burner connector 840, extending radially through the lower small burner connector 840. These lower small burner connector air inlets 841 connect the inner nozzle 420 and the upper air box within the lower small burner connector 840, allowing primary air to be supplied to the inner nozzle 420, thereby providing air to the inner burner cap 120 on the upper small burner connector 830.

[0095] The gas is ejected from the external nozzle 410 and ejected through the external ejector tube 610, drawing primary air from the outlet of the air guide shroud 820 inside the upper air box into the mixing chamber for thorough mixing, and then burning at the outlet of the external burner cap 110. The internal nozzle 420 is connected to the internal burner cap 120 via the lower small burner connector 840 and the upper small burner connector 830. The gas is ejected from the internal nozzle 420, drawing primary air from the upper air box and burning it at the outlet of the internal burner cap 120.

[0096] Traditional atmospheric gas stoves are classified into top-intake and bottom-intake types based on the location of the primary air intake. In bottom-intake stoves, primary air enters through a damper on the bottom shell, sourced from a pre-drilled air intake gap in the cabinet or a narrow gap in the cabinet door. If there is no pre-drilled air intake gap in the cabinet or the cabinet door gap is too small, insufficient primary air will occur. However, in the embodiment described in this application, the blower 100 is installed inside the bottom shell 200, effectively transforming the original top-intake stove into a bottom-intake stove. Therefore, in some embodiments, the forced-draft gas stove has an upper air intake channel above the panel 300. This upper air intake channel connects the receiving cavity to the atmosphere, allowing the blower 1000 to obtain primary air through this channel, thus restoring the top-intake design. Specifically:

[0097] Please see Figures 16-18 The upper wind box cover 810 includes a first annular surface 813 at the upper end and a second annular surface 814 at the lower end. The inner diameter of the second annular surface 814 is larger than that of the first annular surface 813, and the top end of the second annular surface 814 is integrally connected to the bottom end of the first annular surface 813. The bottom end of the second annular surface 814 is provided with an upper wind box cover foot 815 that supports the second annular surface 814.

[0098] Please see Figure 16 , 1719. The base 510 and the plate body 520 of the liquid collection tray 500 are set separately. The base 510 has a central hole in the middle for placing the plate body 520. The plate body 520 includes the bottom surface of the plate body and the peripheral wall of the plate body. The peripheral wall of the plate body is fixed to the connecting piece 511 of the base 510 by two (or three or four, or other numbers) liquid collection tray screws 540 arranged at intervals.

[0099] Please see Figures 19-21 The top opening of the peripheral wall of the disc body is folded outward and extended downward to form a folded edge 521. A first annular gap 523 is formed between the folded edge 521 and the peripheral wall of the liquid holding tray 500. The folded edge 521 is fitted with the inner wall of the first annular surface 813 with a gap, so that a second annular gap 524 is formed between the folded edge 521 and the second annular surface 814. An upper air inlet 522 is provided on the folded edge 521 to connect the first annular gap 523 and the second annular gap 524.

[0100] Please see Figure 20 , 21 The upper air box cover bracket 815 of the upper air box cover 810 is placed on the base 510 of the liquid collection tray 500, and the open second annular surface 814 and the base 510 of the liquid collection tray 500 form an upper air inlet gap 816 for air to enter.

[0101] Please see Figure 21 , 22 Air enters the second annular gap 524 through the upper air inlet 816, and then enters the first annular gap 523 through the upper air inlet 522. The first annular gap 523 is connected to the receiving cavity defined by the panel 300 and the bottom shell 200.

[0102] The upper air intake gap 816, the second annular gap 524, the upper air intake port 522, the first annular gap 523, and the receiving cavity are sequentially connected to form the aforementioned upper air intake channel. The gas stove obtains primary air through this upper air intake channel, which is not controlled by the cabinet structure and has strong applicability.

[0103] Please see Figures 3-4 The burner 100 includes an outer flame cap 110 and an inner flame cap 120. The outer flame cap 110 is annular, and the inner flame cap 120 is located in the central cavity of the outer flame cap 110. Together they form a flame distributor and undertake the flame distribution function of the gas stove combustion.

[0104] In some embodiments of this application, the outer flame cap 110 of the burner 100 is a sheet metal outer flame cap. For example, the sheet metal outer flame cap can be the sheet metal outer flame cap described in patent application No. 2021114289553 (invention title: A Flame Cap and a Burner Containing the Same), or it can be... Figure 2 , 3The sheet metal outer burner cap in section 22 is not described in detail here, as it is not within the scope of protection of this invention. Of course, any other outer burner cap that can achieve combustion and is compatible can also be used in the forced draft gas stove of this invention, and is not limited here.

[0105] like Figure 22 As shown, the base of the sheet metal outer flame cap is clearance-fitted with the ejector 600, which is equipped with a straight-tube inner ejector 620. The ejector body 650 is coaxially provided with an inner ring 640 and an outer ring 630. The base of the sheet metal outer flame cap includes an outer ring and an inner ring. The outer ring is set on the outer ring 630 of the ejector, and the inner ring is mounted on the inner ring 640 of the ejector. The base of the sheet metal outer flame cap and the ejector 600 enclose a mixing chamber. The mixture of gas and air in the mixing chamber communicates with the sheet metal outer flame cap and burns in the flame outlet of the sheet metal outer flame cap.

[0106] The upper small flame connector 830 is located in the center of the inner ring, and the bottom end of the upper small flame connector 830 is connected to the lower small flame connector 840. The top end supports the inner flame cover 120 and is connected to the inner flame cover 120. Gas and air are transported to the inner flame cover 120 for combustion through the lower small flame connector 840 and the upper small flame connector 830.

[0107] In this embodiment, the inner burner cap 120 can be the sheet metal inner burner cap described in patent application number 202111428955.3 (invention title: A burner cap and a burner containing the same), but since the inner burner cap is not within the scope of protection claimed in this embodiment, it will not be described further here. Of course, any other inner burner cap that can achieve combustion and is adaptable can also be used in the forced draft gas stove of this embodiment, and is not limited here.

[0108] Please see Figure 23 , 24 In other embodiments, the outer flame cap 110 is an infrared combustion plate 900, which includes a combustion plate body 920 that performs combustion. The combustion plate body 920 is annular and is fixed to the combustion plate fixing ring 910 by a combustion plate pressure ring 930. Figure 24 As shown.

[0109] like Figure 25 As shown, the top surface of the combustion plate fixing ring 910 is provided with a combustion plate annular cavity 911 for accommodating the lower part of the combustion plate body 920 and a combustion plate central through hole 912 for accommodating the inner flame cap 120, ignition needle 430, probe 480, etc. The combustion plate annular cavity 911 is formed by the inner annular wall 913 and the inner annular wall 916 of the fixing ring. The combustion plate annular cavity 911 has annular planes 914 and 915 for placing the combustion plate body 920. The combustion plate body 920 is suspended on the annular planes 914 and 915.

[0110] The combustion plate body 920 is placed inside the combustion plate annular cavity 911 and fastened to the combustion plate fixing ring 910 by the combustion plate pressure ring 920. The combustion plate pressure ring 930 includes a pressure ring body 931, an inner ring edge 931 disposed on the top surface of the pressure ring body 931, and a plurality of fasteners 933 disposed on the bottom surface of the pressure ring body 931. The pressure ring body 931 surrounds the combustion plate fixing ring 910. The inner ring edge 931 is fastened downward to the top edge of the combustion plate body 920. The fasteners 933 are folded inward and fastened to the combustion plate fixing ring 910, thereby tightening the inner ring edge 931 to fasten the combustion plate body 920 to the combustion plate fixing ring 910.

[0111] The combustion plate fixing ring 910 is clearance-fitted with the ejector 600. The outer ring wall 913 of the combustion plate fixing ring 910 has a stepped surface 917, which rests on the outer ring 630 of the ejector. The inner ring wall 916 of the combustion plate fixing ring 910 is set against the outer wall of the inner ring 640 of the ejector. The infrared combustion plate 900 and the ejector 600 enclose a mixing chamber. The bottom of the combustion plate annular cavity 911 is hollowed out and communicates with the mixing chamber. The mixture of combustion gas and air in the mixing chamber enters the infrared combustion plate 900 for combustion through the hollowed-out bottom of the combustion plate annular cavity 911.

[0112] The combustion plate has a through hole 912 running vertically through it. The upper small flame connector 830 is located inside the through hole 912, and its bottom end is connected to the lower small flame connector 840. The top end supports the inner flame cap 120 and is connected to it. Gas and air are transported to the inner flame cap 120 for combustion via the lower small flame connector 840 and the upper small flame connector 830. Compared to the sheet metal outer flame cap 110, the infrared combustion plate 900 is thicker. Therefore, the upper small flame connector 830 is longer to effectively connect with the lower small flame connector 840.

[0113] In addition, to prevent air leakage from the annular wall of the combustion plate body 920 due to improper installation of the infrared combustion plate 900, the infrared combustion plate 900 is also provided with an inner ring positioning ring 940. The inner ring positioning ring 940 includes an inner ring positioning ring body 941 for insertion into the central through hole 912 of the combustion plate. The inner ring positioning ring body 941 is clearance-fitted with the central through hole 912 of the combustion plate, and overlaps with the inner annular wall 916 of the fixing ring to completely cover the inner annular wall of the combustion plate body 920. The top surface of the inner ring positioning ring 940 is provided with an outwardly folded flange 940 extending onto the combustion plate body 920 to cover the gap between the combustion plate body 920 and the inner ring positioning ring body 941, thereby preventing air leakage from the inner annular wall of the combustion plate body 920. The inner ring positioning ring 940 can both prevent gas from escaping from the mixing chamber and position the combustion plate body 920 on the combustion plate fixing ring 910.

[0114] Please see Figures 2-3 In some embodiments of this application, the forced-draft gas stove is equipped with a pot support 700, which supports the bottom of the pot and reduces heat loss to the outside. For example, the pot support 700 can be the pot support described in the applicant's patent application No. 202210222641.6 (invention title: Pot Support and Gas Stove Containing the Same), which includes an outer support 710 and an inner support 720, and has the function of improving the thermal efficiency of the gas stove and reducing heat loss to the heating area and non-heating area. However, since the pot support 700 is not within the scope of protection of the embodiments of this invention, it will not be described in detail here. Of course, any other adaptable pot support can also be used in the forced-draft gas stove of the embodiments of this invention, and is not limited here.

[0115] like Figure 3 As shown, a waterproof pad 440 is laid on the nozzle plate 450 of the nozzle seat 400 in this embodiment of the application.

[0116] like Figure 9 , 12 As shown, some embodiments of the forced draft gas stove of this application are also equipped with a temperature probe 490. The temperature probe 490 is used to detect the real-time temperature of the ejector 600 and transmit the temperature information to the controller so that the controller can determine the working state of the stove based on the temperature information, such as cold state (stove temperature equals ambient temperature), hot state (stove temperature is higher than ambient temperature) and whether backfire has occurred, so as to take flameout protection when necessary.

[0117] The forced-draft gas stoves described in this application include built-in gas stoves and integrated stoves, both of which refer to household gas stoves.

[0118] It should be understood that although quantifiers such as "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are used merely to distinguish one unit from another. For example, without departing from the scope of the exemplary embodiments, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit.

[0119] The directional terms such as "outer," "middle," and "inner" mentioned or potentially used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0120] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the method of this application, and these improvements and additions should also be considered within the scope of protection of this invention. Any modifications, alterations, and equivalent variations made by those skilled in the art without departing from the spirit and scope of this application, based on the disclosed technical content, are equivalent embodiments of this application. Furthermore, any modifications, alterations, and variations made to the above embodiments based on the essential technology of this application still fall within the scope of the technical solution of this application.

Claims

1. A high-pressure gas stove, comprising a nozzle and an ejector, characterized in that, The powerful blower gas stove also has an upper air box for limiting primary air. The nozzle outlet is located inside the upper air box, and the top of the upper air box is connected to the ejector inlet. The bottom of the upper air box is connected to the air intake power equipment through an air intake channel to provide primary air to the ejector. All primary air is limited to the upper air box and does not overflow, ensuring that the amount of primary air is accurately provided to the ejector. The upper air box includes: The upper air box cover is annular, with its top opening sealed around the outer peripheral wall of the ejector, and its peripheral wall surrounding the nozzle outlet and ejector inlet. The bottom opening of the upper air box is sealed, thereby forming the upper air box that limits the primary airflow.

2. A forced-draft gas stove as described in claim 1, wherein the forced-draft gas stove includes a control panel, characterized in that, The upper air box includes: The upper air box cover is annular, with its top opening sealed around the outer peripheral wall of the ejector and its peripheral wall surrounding the nozzle outlet and ejector inlet. The bottom opening of the upper air box is attached to the upper surface of the panel, thereby forming the upper air box that defines the primary air.

3. A forced-draft gas stove as described in claim 1, wherein the forced-draft gas stove includes a panel, and the panel is provided with a liquid collection tray, characterized in that, The upper air box includes: The upper air box cover is annular, with its top opening sealed around the outer peripheral wall of the ejector and its peripheral wall surrounding the nozzle outlet and ejector inlet. The bottom opening of the upper air box is attached to the upper surface of the liquid collection tray, thereby forming the upper air box that limits the primary air.

4. A forced-draft gas stove as described in claim 3, wherein the nozzle is disposed on a nozzle seat, the nozzle seat comprising a nozzle plate and nozzle feet supporting the nozzle plate, characterized in that, The air intake channel includes: The lower air box is disposed on the bottom surface of the nozzle plate, and an air inlet is provided on the side of the lower air box, which is connected to the air intake power equipment. At least one air outlet for the lower air box is provided on the nozzle plate, and an air outlet for the liquid collection tray is provided on the liquid collection tray, which is aligned with and connected to the air outlet for the lower air box. The lower air box is connected to the upper air box in sequence through the air outlet for the lower air box and the air outlet for the liquid collection tray, thereby forming the air intake channel that provides air to the upper air box.

5. A forced-draft gas stove as described in claim 4, characterized in that, The high-pressure gas stove also includes: An air guide hood is provided at each air outlet of the lower air box. The inlet of the air guide hood is connected to the corresponding air outlet of the liquid collection tray. The outlet of the air guide hood is rotatably arranged along the inner circumferential wall of the liquid collection tray and stops on one side of the nozzle and ejector inlet, thereby guiding the air in the lower air box to spiral into the ejector in one direction.

6. A forced-draft gas stove as described in claim 5, wherein the nozzle comprises an outer nozzle and an inner nozzle, and the ejector comprises an ejector body, an outer ejector tube, and an inner ejector tube, the outer ejector tube being disposed on the lower surface of the ejector body, and the inner ejector tube vertically penetrating along the central axis of the ejector body, characterized in that, The upper air box cover is fixed between the ejector and the liquid collection tray via the lower small flame connecting seat and the upper small flame connecting seat; The bottom end of the lower small flame connector is sleeved on the inner nozzle, the top end of the lower small flame connector extends vertically upward into the inner ejector tube, and the outer peripheral wall of the top end of the lower small flame connector is provided with external threads. The upper small flame connector is located inside the inner ejector tube. The inner circumferential wall of the upper small flame connector is provided with an internal thread. The upper small flame connector and the lower small flame connector are tightened by the external thread and the internal thread, thereby fixing the ejector and the upper air box cover.

7. A forced-draft gas stove as described in claim 6, characterized in that, The lower small flame connector and the upper small flame connector are hollow and connected to each other to connect the inner nozzle and the upper small flame connector, so that the inner flame cap set on the upper small flame connector can obtain gas. At least one air inlet is provided on the outer peripheral wall at the bottom of the lower small flame connector. The air inlet is connected to the inner nozzle and the upper air box inside the lower small flame connector, so that the inner nozzle receives primary air, thereby allowing the inner flame cap on the upper small flame connector to receive air.

8. A forced-draft gas stove as described in claim 3, characterized in that, The powerful blower gas stove is also equipped with an upper air intake channel, through which the gas stove obtains primary air.

9. A forced-draft gas stove as described in claim 8, wherein the forced-draft gas stove further includes a bottom shell, the bottom shell being located below the panel and together with the panel defining a receiving cavity, characterized in that, The upper wind box cover includes a first annular surface at the upper end and a second annular surface at the lower end. The inner diameter of the second annular surface is larger than that of the first annular surface, and the top end of the second annular surface is integrally connected to the bottom end of the first annular surface. The bottom end of the second annular surface is provided with an upper wind box cover foot that supports the second annular surface. The liquid holding tray includes a base mounted on the panel and a tray body mounted on the base. The tray body includes a bottom surface of the tray body and a peripheral wall of the tray body connected to the bottom surface of the tray body. The top opening of the peripheral wall of the tray body is folded outward and extends downward to form a folded edge. A first annular gap is formed between the folded edge and the peripheral wall of the liquid holding tray. The folded edge is fitted with the inner wall of the first annular surface with a clearance, and a second annular gap is formed between the folded edge and the second annular surface. An upper air inlet is provided on the folded edge to connect the first annular gap and the second annular gap. The upper air box cover bracket is placed on the base of the liquid collection tray, and the open second annular surface forms an upper air inlet gap between the liquid collection tray and the base of the liquid collection tray to allow air to enter. The upper air inlet gap, the second annular gap, the upper air inlet, the first annular gap, and the receiving cavity are connected in sequence to form the upper air inlet channel.

10. A forced-draft gas stove as described in claim 7, wherein the forced-draft gas stove further includes a burner, the burner including an outer flame cap, characterized in that, The outer flame cover is an infrared combustion plate. The infrared combustion plate is annular and includes a combustion plate body that performs combustion. The combustion plate body is fixed to the combustion plate fixing ring by a combustion plate pressure ring. The infrared combustion plate also includes an inner ring positioning ring, which includes an inner ring positioning ring body for inserting into the center of the infrared combustion plate and fitting with the inner peripheral wall of the infrared combustion plate. The inner ring positioning ring body overlaps with the combustion plate fixing ring to completely cover the inner ring wall of the combustion plate body. The top surface of the inner positioning ring body is provided with an outwardly folded edge that extends to the combustion plate body to cover the gap between the combustion plate body and the inner positioning ring body, thereby preventing air leakage from the inner peripheral wall of the combustion plate body.

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