Heat exchanger and stove

Abstract

The utility model provides a heat exchanger and a stove. The heat exchanger is applied to the kitchen range and comprises a hot air pipe cavity and a cold air pipe cavity, and at least part of the hot air pipe cavity and at least part of the cold air pipe cavity are separated through a partition plate. A heat pipe is arranged on the partition plate, one end of the heat pipe is located in the cold air pipe cavity, and the other end of the heat pipe is located in the hot air pipe cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, and in particular to a heat exchanger and a stove. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. Existing heat exchangers are usually plate heat exchangers or tube heat exchangers, which have poor heat exchange effects. In addition, existing stoves usually use flues to directly discharge the hot air generated by the flame, which wastes energy and is not economical.

[0003] In view of this, the present specification provides a heat exchanger and a stove that can recycle the hot air generated by flames and have high heat exchange efficiency. Utility Model Content

[0004] One or more embodiments of the present specification provide a heat exchanger applied to a cooker, comprising a hot air duct cavity and a cold air duct cavity, wherein the hot air duct cavity and the cold air duct cavity are at least partially separated by a partition; a heat pipe is provided on the partition, one end of the heat pipe is located in the cold air duct cavity, and the other end of the heat pipe is located in the hot air duct cavity.

[0005] In some embodiments, one end of the heat pipe is vertically higher than the other end.

[0006] In some embodiments, the separator is a metal separator.

[0007] In some embodiments, the heat exchanger includes a first sub-heat exchanger and a second sub-heat exchanger; the second sub-heat exchanger is connected to the first sub-heat exchanger and the exhaust port in the furnace of the stove.

[0008] In some embodiments, the heat exchanger further includes one or more intermediate heat exchangers connected between the first sub-heat exchanger and the second sub-heat exchanger, and the first sub-heat exchanger and the second sub-heat exchanger are in communication with each other through the intermediate heat exchangers.

[0009] In some embodiments, the second sub-heat exchanger is a high temperature zone heat exchanger, which is a non-heat pipe heat exchanger or a heat pipe heat exchanger.

[0010] In some embodiments, the second sub-heat exchanger is a plate heat exchanger or a tube heat exchanger.

[0011] In some embodiments, the first sub-heat exchanger and the second sub-heat exchanger are connected to form an L-shaped tubular body, the partition is L-shaped, and the first sub-heat exchanger and the second sub-heat exchanger are both separated by the partition.

[0012] In some embodiments, in the first sub-heat exchanger, the heat pipe is arranged obliquely or perpendicularly to the partition, and one end of the heat pipe is higher than the other end in the vertical direction; in the second sub-heat exchanger, the cold air pipe cavity wraps the hot air pipe cavity, and when the heat pipe is arranged in the second sub-heat exchanger, one end of the heat pipe is higher than the other end in the vertical direction.

[0013] In some embodiments, the hot air duct cavity includes a first inlet and a first outlet, the first inlet is connected to the high-temperature exhaust gas discharge cavity of the inner furnace of the stove, and the first outlet is connected to the lower temperature exhaust gas discharge outlet after heat exchange; the cold air duct cavity includes a second inlet and a second outlet, the second inlet is connected to the oxygen-enriched air inlet duct of the stove, and the second outlet is connected to the burner of the stove.

[0014] One or more embodiments of the present specification provide a cooker, which includes the heat exchanger described in any embodiment of the present specification.

[0015] In some embodiments, the stove also includes an inner furnace and a burner, the hot air duct cavity of the heat exchanger includes a first inlet and a first outlet, the first inlet is connected to the high-temperature exhaust gas discharge cavity of the inner furnace, and the first outlet is connected to the lower temperature exhaust gas discharge port after heat exchange; the cold air duct cavity of the heat exchanger includes a second inlet and a second outlet, the second inlet is connected to the oxygen-enriched air inlet duct of the stove, and the second outlet is connected to the burner.

[0016] In some embodiments, the stove also includes a high-temperature flame tail flame escape cavity, which is arranged in the stove, one end of the high-temperature flame tail flame escape cavity is connected to the inner furnace, and the other end of the high-temperature flame tail flame escape cavity is connected to the hot air cavity of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. The same numbers in the drawings represent the same structures or steps.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a heat exchanger shown in some embodiments of this specification.

[0019] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the heat exchanger shown.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of a heat exchanger shown in other embodiments of this specification.

[0021] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the heat exchanger shown.

[0022] Figure 5It is a schematic diagram of the three-dimensional structure of a stove shown in some embodiments of this specification.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of a stove from a side and rear perspective according to some embodiments of the present specification.

[0024] Figure 7 It is a schematic diagram of the internal structure of a stove from a side and rear perspective according to some embodiments of the present specification.

[0025] Figure 8 It is a schematic diagram of the internal structure of a stove according to some embodiments of this specification.

[0026] Markings in the figure: 100-heat exchanger, 110-hot air pipe cavity, 111-first inlet, 112-first outlet, 120-cold air pipe cavity, 121-second inlet, 122-second outlet, 130-partition, 140-heat pipe, 150-first sub-heat exchanger, 160-second sub-heat exchanger, 170-exhaust gas outlet, 180-stove oxygen-enriched air inlet duct, 200-furnace body, 210-inner furnace, 220-burner, 300-high-temperature flame tail flame discharge cavity, 1000-stove. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the embodiments will be described in detail below with reference to the accompanying drawings. Obviously, the contents described below are some examples or embodiments of this specification. For ordinary technicians in this field, without paying creative work, the technical solutions or means disclosed in this specification can also be applied to other scenarios based on these technical contents.

[0028] Unless otherwise specified, technical terms used in this specification to describe components, elements, etc. do not refer to the singular, but may also include the plural. Generally speaking, terms such as "include", "comprise", etc. only indicate that the steps, elements, or components that have been clearly identified are included, and these steps, elements, and components do not constitute an exclusive list, such as the method or device described may also include other steps or components.

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of a heat exchanger shown in some embodiments of this specification. Figure 2 yes Figure 1 Schematic diagram of the internal structure of the heat exchanger shown. Figure 3 It is a schematic diagram of the three-dimensional structure of a heat exchanger shown in other embodiments of this specification. Figure 4 yes Figure 3 The internal structure diagram of the heat exchanger is shown in Figure 1. Figure 1-4As shown, one or more embodiments of the present specification provide a heat exchanger 100, which may include a hot air cavity 110 and a cold air cavity 120, at least part of which is separated by a partition 130. The hot air cavity 110 may be used to pass hot air (such as residual heat from flames, etc.), and the cold air cavity 120 may be used to pass cold air (such as fresh air, recycled oil smoke, etc.), and the hot air in the hot air cavity 110 and the cold air in the cold air cavity 120 may be heat exchanged in the heat exchanger 100.

[0030] In some embodiments, a heat pipe 140 is provided on the partition 130, one end of the heat pipe 140 is located in the cold air pipe cavity 120, and the other end of the heat pipe 140 is located in the hot air pipe cavity 110. The heat pipe 140 is a heat transfer element that relies on the phase change of its internal working liquid to achieve heat transfer. The thermal conductivity of the heat pipe 140 is essentially different from that of many conventional solid thermal conductivity. It not only has the structural characteristics of light weight, small size and no moving parts, but also has the working characteristics of rapid thermal response, uniform temperature, small temperature difference and separable cold and heat sources. By providing the heat pipe 140, the heat exchange effect of the heat exchanger 100 can be effectively improved. In some embodiments, a plurality of heat pipes 140 can be provided on the partition 130. In some embodiments, a single heat pipe 140 can be provided on the partition 130.

[0031] In some embodiments, one end of the heat pipe 140 is higher than the other end in the vertical direction. That is, one end of the heat pipe 140 located in the cold air tube cavity 120 is higher than the other end located in the hot air tube cavity 110 in the vertical direction. One end of the heat pipe 140 is the condensation end, and the other end is the evaporation end. When the other end of the heat pipe is heated, the liquid in the capillary tube is rapidly vaporized, and the vapor flows to the other end under the power of heat diffusion, and condenses at the condensation end to release heat. The liquid then flows back to the evaporation end along the porous material by capillary action, and the cycle continues until the temperatures at both ends of the heat pipe are equal. By setting one end of the heat pipe 140 located in the cold air tube cavity 120 to be higher than the other end located in the hot air tube cavity 110 in the vertical direction, gravity can be further used to promote the condensed liquid to flow back to the evaporation end, thereby better achieving a heat exchange effect.

[0032] In some embodiments, the partition 130 may be a metal partition. The metal partition can further promote the heat exchange effect between the hot air cavity 110 and the cold air cavity 120. In some embodiments, the partition 130 may be provided with a plurality of mounting holes, and the heat pipe 140 is respectively installed in each mounting hole. In some embodiments, the partition 130 may be made of other materials with good thermal conductivity (such as graphene, etc.).

[0033] In some embodiments, the heat exchanger 100 may include a first sub-heat exchanger 150 and a second sub-heat exchanger 160, and the second sub-heat exchanger 160 is connected to the first sub-heat exchanger 150 and the exhaust port in the furnace of the stove 1000. Through the arrangement of the first sub-heat exchanger 150 and the second sub-heat exchanger 160, the residual heat of the flame of the furnace body 200 can be effectively exported and heat exchanged with the cold air (such as fresh air, recycled oil smoke, etc.) input into the furnace body 200. In some embodiments, the first sub-heat exchanger 150 and the second sub-heat exchanger 160 can be an integrally formed heat exchanger, and the first sub-heat exchanger 150 and the second sub-heat exchanger 160 are respectively the low temperature section and the high temperature section of the integrally formed heat exchanger. In some embodiments, the first sub-heat exchanger 150 can be arranged in a vertical direction or inclined upward.

[0034] In some embodiments, the heat exchanger 100 may further include one or more intermediate heat exchangers connected between the first sub-heat exchanger 150 and the second sub-heat exchanger 160 , and the first sub-heat exchanger 150 and the second sub-heat exchanger 160 are in communication with each other through the intermediate heat exchanger.

[0035] In some embodiments, the first sub-heat exchanger 150 may be a low temperature zone heat exchanger, and the second sub-heat exchanger 160 may be a high temperature zone heat exchanger. It is worth noting that the low temperature and high temperature described herein are relative concepts, and the temperature of the low temperature zone is lower than that of the high temperature zone. Figure 1-2 As shown, the first sub-heat exchanger 150 can be a heat pipe heat exchanger, and the second sub-heat exchanger 160 can be a heat pipe heat exchanger or a non-heat pipe heat exchanger. In some embodiments, the second sub-heat exchanger 160 can be a plate heat exchanger or a tube heat exchanger. By replacing a part of the heat exchanger from a heat pipe heat exchanger with a plate heat exchanger or a tube heat exchanger, costs can be saved while ensuring the heat exchange effect. Figure 1-2 In the illustrated embodiment, the hot air duct cavity 110 and the cold air duct cavity 120 in the first sub-heat exchanger 150 may be separated by a partition plate 130. In some alternative embodiments, the second sub-heat exchanger 160 may be a metal tube heat exchanger.

[0036] In some embodiments, the first sub-heat exchanger 150 and the second sub-heat exchanger 160 are connected to form an L-shaped tubular body. The connection between the first sub-heat exchanger 150 and the second sub-heat exchanger 160 may be an arc-shaped transition. Figure 3-4 As shown, the partition 130 may be L-shaped, and the first sub-heat exchanger 150 and the second sub-heat exchanger 160 are both separated by the partition 130. The hot air duct cavity 110 and the cold air duct cavity 120 separated by the partition 130 are both L-shaped tubular bodies.

[0037] In some embodiments, Figure 3-4As shown, in the first sub-heat exchanger 150, the heat pipe 140 is arranged obliquely or perpendicularly to the partition, and one end of the heat pipe 140 is higher than the other end in the vertical direction; in the second sub-heat exchanger 160, the cold air pipe cavity 120 is located above the hot air pipe cavity 110, and the heat pipe is arranged perpendicular to the partition 130. In some embodiments, the cold air pipe cavity 120 can wrap the hot air pipe cavity 110. By wrapping the hot air pipe cavity 110, it is possible to prevent the danger caused by the local high temperature of the smoke pipe; for example, it can prevent oil from leaking to the high temperature point to catch fire and smoke, or high temperature from damaging other components. In some embodiments, when a heat pipe is arranged in the second sub-heat exchanger, one end of the heat pipe is higher than the other end in the vertical direction.

[0038] In some embodiments, the hot air duct 110 includes a first inlet 111 and a first outlet 112, the first inlet 111 is connected to the high temperature exhaust gas discharge chamber of the inner furnace 210 of the stove, and the first outlet 112 is connected to the relatively low temperature exhaust gas discharge outlet 170 after heat exchange; the cold air duct 120 includes a second inlet 121 and a second outlet 122, the second inlet 121 is connected to the stove oxygen inlet duct 180, and the second outlet 122 is connected to the burner 220 of the stove. In some embodiments, the first outlet 112 and the second inlet 121 can be arranged at the upper part of the first sub-heat exchanger 150, so as to increase the heat exchange area of ​​hot air and cold air. In some embodiments, one end of the stove oxygen inlet duct 180 is connected to the second inlet 121, and the other end of the stove oxygen inlet duct 180 can be connected to a fan (not shown in the figure), which can transport cold air (such as fresh air, recycled oil smoke, etc.) into the heat exchanger 100.

[0039] Figure 5 It is a schematic diagram of the three-dimensional structure of a stove shown in some embodiments of this specification. Figure 6 It is a schematic diagram of the three-dimensional structure of a stove from a side and rear perspective according to some embodiments of the present specification. Figure 7 It is a schematic diagram of the internal structure of a stove from a side and rear perspective according to some embodiments of the present specification. Figure 8 Schematic diagram of the internal structure of a cooker according to some embodiments of this specification. Figure 5-8 As shown, one or more embodiments of the present specification further provide a cooker 1000 , which includes the heat exchanger 100 described in any embodiment of the present specification.

[0040] In some embodiments, the stove 1000 may also include an inner furnace 210 and a burner 220, and the hot air duct cavity 110 of the heat exchanger 100 includes a first inlet 111 and a first outlet 112, the first inlet 111 is connected to the high-temperature exhaust gas discharge cavity of the inner furnace 210, and the first outlet 112 is connected to the lower temperature exhaust gas discharge outlet 170 after heat exchange; the cold air duct cavity 120 of the heat exchanger 100 includes a second inlet 121 and a second outlet 122, the second inlet 121 is connected to the stove oxygen inlet duct 180, and the second outlet 122 is connected to the burner 220.

[0041] In some embodiments, Figure 5 and Figure 8 As shown, the furnace body 200 can be arranged on the cooker 1000. The furnace body 200 can include a flame enclosure, and the space enclosed by the flame enclosure is defined as an inner furnace 210. The upper part of the inner furnace 210 can be used to place pots and pans; a burner 220 can be arranged at the bottom of the inner furnace 210. The burner 220 can be used to burn and generate flames, and the flames burn in the inner furnace 210 and heat the pots and pans.

[0042] In some embodiments, the stove 1000 may further include a high-temperature flame tail flame discharge lumen 300, which is disposed in the stove, one end of which is in communication with the inner furnace 210, and the other end of which is in communication with the hot air lumen 110 of the heat exchanger 100. In some embodiments, an opening may be provided at the lower end of one side of the flame enclosure, which is the end of the high-temperature flame tail flame discharge lumen 300 in communication with the inner furnace 210. The heat generated by the flame in the inner furnace 210 can be led to the heat exchanger 100 through the high-temperature flame tail flame discharge lumen 300, and the exhaust gas after heat exchange is discharged from the exhaust gas outlet 170. Cold air (such as fresh air, recycled oil smoke, etc.) can be transported to the burner 220 of the stove 1000 after heat exchange with the hot exhaust gas through the heat exchanger 100, thereby providing fuel and / or oxygen for the burner 220 to promote combustion and save energy.

[0043] The beneficial effects that may be brought about by the embodiments of this specification include but are not limited to: (1) By setting up a heat pipe, the heat exchange effect of the heat exchanger can be effectively improved; (2) The metal partition can further promote the heat exchange effect between the hot air tube cavity and the cold air tube cavity; (3) Cold air (such as fresh air, recycled oil smoke, etc.) is heated by the heat exchanger and then transported to the burner, which can promote combustion and save energy. It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other possible beneficial effects.

[0044] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are taught in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

Claims

1. A heat exchanger, applied to a stove, characterized in that: It comprises a hot air tube cavity and a cold air tube cavity, wherein at least part of the hot air tube cavity and the cold air tube cavity are separated by a partition; a heat pipe is arranged on the partition, one end of the heat pipe is located in the cold air tube cavity, and the other end of the heat pipe is located in the hot air tube cavity; Wherein, the heat exchanger comprises a first sub-heat exchanger and a second sub-heat exchanger; the second sub-heat exchanger is connected to the first sub-heat exchanger and the exhaust port in the furnace of the stove; In the first sub-heat exchanger, the heat pipe is arranged obliquely or perpendicularly to the partition, and one end of the heat pipe is higher than the other end in the vertical direction; in the second sub-heat exchanger, the cold air pipe cavity wraps the hot air pipe cavity; when the heat pipe is arranged in the second sub-heat exchanger, one end of the heat pipe is higher than the other end in the vertical direction.

2. The heat exchanger according to claim 1, characterized in that The heat exchanger further includes one or more intermediate heat exchangers connected between the first sub-heat exchanger and the second sub-heat exchanger, and the first sub-heat exchanger and the second sub-heat exchanger are in communication with each other through the intermediate heat exchangers.

3. The heat exchanger according to claim 1, characterized in that The second sub-heat exchanger is a high temperature zone heat exchanger, which is a non-heat pipe heat exchanger or a heat pipe heat exchanger.

4. The heat exchanger according to claim 1, characterized in that The hot air duct cavity includes a first inlet and a first outlet, the first inlet is connected to the high-temperature exhaust gas discharge cavity in the inner furnace of the stove, and the first outlet is connected to the lower-temperature exhaust gas discharge outlet after heat exchange; the cold air duct cavity includes a second inlet and a second outlet, the second inlet is connected to the oxygen-enriched air inlet duct of the stove, and the second outlet is connected to the burner of the stove.

5. A cooking appliance, characterized in that: The heat exchanger comprises the heat exchanger according to any one of claims 1 to 4.

6. The cooker according to claim 5, characterized in that: It also includes an inner furnace and a burner, the hot air duct cavity of the heat exchanger includes a first inlet and a first outlet, the first inlet is connected to the high-temperature exhaust gas discharge cavity of the inner furnace, and the first outlet is connected to the lower temperature exhaust gas discharge port after heat exchange; the cold air duct cavity of the heat exchanger includes a second inlet and a second outlet, the second inlet is connected to the oxygen-enriched air inlet duct of the stove, and the second outlet is connected to the burner.

7. The cooker according to claim 6, characterized in that: It also includes a high-temperature flame tail flame escape cavity, which is arranged in the stove, one end of the high-temperature flame tail flame escape cavity is connected to the inner furnace, and the other end of the high-temperature flame tail flame escape cavity is connected to the hot air cavity of the heat exchanger.

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