Steam heating rice steaming cabinet with efficient heat exchange function

Abstract

The utility model discloses an efficient heat exchange steam heating rice steaming cabinet which comprises a heat preservation cabinet body, a steam generation box is installed in a steam generation cavity, and an evaporation water cavity is formed in the interior of the steam generation box. The bottom of the steam generation box is closed and provided with a box bottom plate, the box bottom plate of the steam generation box extends towards the evaporation water cavity in a sealed mode to be provided with a smoke collecting cylinder, and a combustion stove corresponding to the smoke collecting cylinder is installed at the bottom of the steam generation box. A heat exchange coil pipe is installed in the evaporation water cavity and composed of a plurality of layers of coil pipes, each layer of coil pipe is in an S shape, the inlet end of the heat exchange coil pipe is communicated with the smoke collecting cylinder, and a smoke exhaust pipe communicated with the outlet end of the heat exchange coil pipe in a sealed mode is installed on the side wall of the steam generation box. According to the utility model, not only is flame heat generated by fuel combustion of the combustion stove utilized, but also high-temperature flue gas generated by fuel combustion is fully utilized, and water is fully and uniformly heated by adopting the heat exchange coil distributed in the steam generation box, so that the heat conversion rate and the steam generation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rice steaming cabinet, especially to a high -efficient heat transfer's steam heating rice steaming cabinet. BACKGROUND

[0002] The utility model relates to a kind of kitchen rice steaming equipment, steam heating rice steaming cabinet is heated water to produce high-temperature steam and carries out rice steaming operation by high-temperature steam as heat source.The existing steam heating rice steaming cabinet is directly used electric heating, gas or fuel combustion, water in water tank is heated and steam is generated, especially the flame or flue gas of fuel combustion has small contact area with water tank, there is flame or flue gas of fuel combustion escape, cannot carry out sufficient heat exchange with water in water tank, leading to fuel heat conversion rate is not high, steam volume is insufficient, rice steaming time is long and other defects. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a kind of high-temperature steam efficiency, provide a kind of high-temperature steam efficiency, combustion stove is located at the bottom of steam generation tank combustion produces flame and carries out heating in steam generation tank, high-temperature flue gas and part of flame produced by combustion stove are gathered and transported into heat exchange coil by flue gas collection cylinder, heat exchange coil is arranged in layers and each layer is S shape, high-temperature flue gas in heat exchange coil is fully heat exchanged with water in steam generation tank, make full use of the heat of high-temperature flue gas, steam generation tank is heated sufficiently, produce high-temperature steam efficiency, distribution is uniform, improve fuel combustion heat utilization rate.

[0004] The utility model discloses a kind of high-temperature steam efficiency, provide a kind of high-temperature steam efficiency, combustion stove is located at the bottom of steam generation tank combustion produces flame and carries out heating in steam generation tank, high-temperature flue gas and part of flame produced by combustion stove are gathered and transported into heat exchange coil by flue gas collection cylinder, heat exchange coil is arranged in layers and each layer is S shape, high-temperature flue gas in heat exchange coil is fully heat exchanged with water in steam generation tank, make full use of the heat of high-temperature flue gas, steam generation tank is heated sufficiently, produce high-temperature steam efficiency, distribution is uniform, improve fuel combustion heat utilization rate.

[0005] A kind of high-temperature steam efficiency, including the heat preservation cabinet of having cabinet inner cavity with heat preservation cabinet body, the upper portion of the cabinet inner cavity of heat preservation cabinet body is rice steaming chamber, the lower portion of the cabinet inner cavity of heat preservation cabinet body is steam generation chamber, the heat preservation cabinet body is equipped with rice steaming cabinet door corresponding rice steaming chamber;Steam generation chamber is installed with steam generation tank in the inside, steam generation tank has steam outlet towards rice steaming chamber, the inside of the tank of steam generation tank is evaporative water cavity;Steam generation tank bottom is closed with tank bottom plate, steam generation tank tank bottom plate extends with flue gas collection cylinder towards evaporative water cavity seal, steam generation tank bottom is installed with the combustion stove corresponding with flue gas collection cylinder, the combustion stove is equipped with the fan corresponding with flue gas collection cylinder;Evaporative water cavity is installed with heat exchange coil in the inside, heat exchange coil is made of several layers of coil, each layer of coil is "S" shape, the inlet end of heat exchange coil is communicated with flue gas collection cylinder, steam generation tank side wall is installed with the exhaust gas pipe that is airtight communication with heat exchange coil outlet end.

[0006] In order to better realize the utility model, the steam generation box is provided with outer and inner layers of box shells, the heat exchange coil is arranged in the inner layer of box shells, an outer layer evaporation cavity is formed between the outer and inner layers of box shells, and the space of the inner layer of box shells except the heat exchange coil is an inner layer evaporation cavity.

[0007] Preferably, the steam generation box is provided with a water inlet pipe and a drain pipe in communication with the outer layer evaporation cavity.

[0008] Preferably, the heat exchange coil is composed of upper and lower layers of coils and a smoke collecting pipe, the upper and lower layers of coils are each composed of two S-shaped pipes, the two S-shaped pipes of the lower layer of coils are in communication with the smoke collecting cylinder respectively, the two S-shaped pipes of the upper layer of coils are in communication with the smoke collecting pipe respectively, and the smoke collecting pipe is in sealed connection with the smoke exhaust pipe through the side wall of the steam generation box.

[0009] Preferably, the two S-shaped pipes of the lower layer of coils are a lower layer S-shaped pipe A and a lower layer S-shaped pipe B respectively, the lower layer S-shaped pipe A and the lower layer S-shaped pipe B are arranged in left-right symmetry, the two S-shaped pipes of the upper layer of coils are an upper layer S-shaped pipe A and an upper layer S-shaped pipe B respectively, the upper layer S-shaped pipe A and the upper layer S-shaped pipe B are arranged in left-right symmetry, and the lower layer S-shaped pipe A of the lower layer of coils and the upper layer S-shaped pipe A of the upper layer of coils are an integral pipeline, and the lower layer S-shaped pipe B of the lower layer of coils and the upper layer S-shaped pipe B of the upper layer of coils are an integral pipeline.

[0010] Preferably, the heat preservation cabinet body is provided with a combustion cabinet door corresponding to the steam generation chamber, and the combustion cabinet door is provided with a combustion switch corresponding to the combustion stove.

[0011] Preferably, the rice steaming chamber is divided into a plurality of layers of rice steaming partitions along the height direction.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] (1) The combustion stove of the utility model is located at the bottom of the steam generation box to generate fire and heat the steam generation box, the high-temperature smoke and part of the flame generated by the combustion stove are collected and transported to the heat exchange coil through the smoke collecting cylinder, the heat exchange coil is arranged in layers and each layer is S-shaped, the high-temperature smoke in the heat exchange coil is fully heat-exchanged with the water in the steam generation box, the heat of the high-temperature smoke is fully utilized, the steam generation box is fully heated, local boiling does not occur, the high-temperature steam is efficient and uniformly distributed, the fuel combustion heat utilization rate is improved, and the rice steaming efficiency is improved.

[0014] (2) The utility model not only utilizes the flame heat of the fuel combustion of the combustion stove, but also fully utilizes the high-temperature smoke of the fuel combustion, the heat exchange coil distributed in the steam generation box is adopted to fully and uniformly heat the water, and the heat conversion rate and the steam generation efficiency are improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the rice steamer cabinet with the door closed according to the present invention;

[0016] Figure 2 for Figure 1 A structural diagram showing the structure after removing the rice steamer door and the combustion cabinet door;

[0017] Figure 3 This is a structural diagram of the back of a rice steamer.

[0018] Figure 4 This is a schematic diagram of the structure of the double-layer steam generator in the embodiment;

[0019] Figure 5 This is a three-dimensional structural diagram of the heat exchange coil in the embodiment, viewed from above.

[0020] Figure 6 This is a three-dimensional structural diagram of the heat exchange coil in the embodiment, viewed from below.

[0021] The names corresponding to the reference numerals in the attached figures are as follows:

[0022] 1-Insulated cabinet body, 2-Steaming chamber, 21-Steaming cabinet door, 3-Steam generator, 4-Combustion stove, 41-Combustion switch, 5-Fan, 6-Steam outlet, 7-Outer shell, 8-Inner shell, 9-Heat exchange coil, 91-Lower S-shaped tube A, 92-Lower S-shaped tube B, 93-Smoke collection pipe, 10-Flue gas collection cylinder, 11-Exhaust pipe. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments:

[0024] Example

[0025] like Figures 1-6 As shown, a high-efficiency heat exchange steam-heated rice cooker includes an insulated cabinet body 1 with an inner cavity, such as... Figure 2As shown, the upper part of the cabinet cavity of the heat preservation cabinet body 1 is a rice steaming chamber 2, and the lower part of the cabinet cavity of the heat preservation cabinet body 1 is a steam generating chamber. The heat preservation cabinet body 1 is provided with a rice steaming cabinet door 21 corresponding to the rice steaming chamber 2, and the rice steaming cabinet door 21 is hingedly installed on the side of the heat preservation cabinet body 1. Preferably, the rice steaming chamber 2 is divided into several layers of rice steaming partitions in the height direction, and a rice steaming tray (used for containing rice) can be placed on each layer of rice steaming partition. The rice steaming cabinet door 21 can be opened (when opened, the rice steaming tray can be taken out) or closed (when closed, the rice steaming chamber 2 is sealed, and the steam can be used for rice steaming operation in the rice steaming chamber 2), and the top of the back of the heat preservation cabinet body 1 is provided with an air outlet pipe in communication with the rice steaming chamber 2, and the air outlet pipe can be in communication with the smoke exhaust pipe 11. The steam generating chamber is provided with a steam generating box 3, and the steam generating box 3 has a steam outlet 6 facing the rice steaming chamber 2. The steam generating box 3 generates high-temperature steam, and the high-temperature steam enters the rice steaming chamber 2 through the steam outlet 6, and then fills the rice steaming tray in each layer of the rice steaming chamber 2, and cooks the rice in the rice steaming tray.

[0026] The inside of the steam generating box 3 is a steam evaporation cavity. The bottom of the steam generating box 3 is closed and has a bottom plate, such as Figure 6 As shown, the bottom plate of the steam generating box 3 extends towards the steam evaporation cavity and is sealed to have a smoke collection cylinder 10, and the bottom of the steam generating box 3 is provided with a combustion stove 4 corresponding to the smoke collection cylinder 10. The combustion stove 4 is provided with a fan 5 corresponding to the smoke collection cylinder 10. The fan 5 supplies air required for combustion of fuel (the fuel can be gas or liquid fuel, and when it is liquid fuel, a vaporizer is added to the combustion stove 4 to vaporize the liquid fuel into fine gas body, and then the liquid fuel is ignited and burned) in the combustion stove 4, and at the same time, the fan 5 guides the air flow to guide the flame and smoke generated by the fuel combustion to the heat exchange coil 9 through the smoke collection cylinder 10. The steam evaporation cavity is provided with a heat exchange coil 9, and the heat exchange coil 9 is composed of several layers of coil pipes, each layer of coil pipe is in the shape of "S", the inlet end of the heat exchange coil 9 is in communication with the smoke collection cylinder 10, and the side wall of the steam generating box 3 is provided with a smoke exhaust pipe 11 in sealed communication with the outlet end of the heat exchange coil 9.

[0027] As shown in Figure 4 In some embodiments, the steam generating box 3 is provided with an outer layer box shell 7 and an inner layer box shell 8, the heat exchange coil 9 is arranged in the inner layer box shell 8, an outer layer evaporation cavity is formed between the outer layer box shell 7 and the inner layer box shell 8, and an inner layer evaporation cavity is formed in the space of the inner layer box shell 8 except the heat exchange coil 9, the outer layer evaporation cavity and the inner layer evaporation cavity are in communication with each other and jointly constitute the steam evaporation cavity. Preferably, the steam generating box 3 is provided with a water inlet pipe (used for supplementing water in the steam evaporation cavity) and a drain pipe (used for discharging water in the steam evaporation cavity after the rice steaming operation is completed) in communication with the outer layer evaporation cavity.

[0028] In some embodiments, the heat exchange coil 9 comprises two layers of coil, the heat exchange coil 9 is composed of two layers of coil and a smoke collecting pipe 93, both of the two layers of coil are composed of two S-shaped pipes, the two S-shaped pipes of the lower layer of coil are respectively communicated with the smoke collecting cylinder 10, the two S-shaped pipes of the upper layer of coil are both communicated with the smoke collecting pipe 93, the smoke collecting pipe 93 is tightly connected with the smoke exhaust pipe 11 through the side wall of the steam generating box 3. As shown in Figure 5 、 Figure 6 the two S-shaped pipes of the lower layer of coil are respectively a lower layer S-shaped pipe A 91 and a lower layer S-shaped pipe B 92. The lower layer S-shaped pipe A 91 and the lower layer S-shaped pipe B 92 are symmetrically arranged. The two S-shaped pipes of the upper layer of coil are respectively an upper layer S-shaped pipe A and an upper layer S-shaped pipe B, and the upper layer S-shaped pipe A and the upper layer S-shaped pipe B are symmetrically arranged. The lower layer S-shaped pipe A 91 of the lower layer of coil and the upper layer S-shaped pipe A of the upper layer of coil are an integral pipe, and the lower layer S-shaped pipe B 92 of the lower layer of coil and the upper layer S-shaped pipe B of the upper layer of coil are an integral pipe.

[0029] In some embodiments, the heat preservation cabinet body 1 is provided with a combustion cabinet door corresponding to the steam generating chamber, the combustion cabinet door is hingedly installed on the side of the heat preservation cabinet body 1, and a combustion switch 41 corresponding to the combustion stove 4 is installed on the combustion cabinet door. The combustion switch operation is performed through the combustion switch 41 (when the combustion switch 41 is opened, the gaseous fuel or the liquid fuel vapor is ignited to burn near the internal area of the smoke collecting cylinder 10).

[0030] Water required for evaporation is added to the evaporation water cavity (including the outer layer evaporation cavity and the inner layer evaporation cavity) of the steam generating box 3. When the combustion stove 4 is in combustion operation, the flame formed by the combustion of the fuel itself can heat the bottom of the steam generating box 3, and the flame and the smoke gas are gathered in the smoke collecting cylinder 10, and then symmetrically enter the heat exchange coil 9 in one layer or two layers or multiple layers through the lower layer S-shaped pipe A 91 and the lower layer S-shaped pipe B 92. The high-temperature smoke gas (mainly high-temperature smoke gas) will flow in the heat exchange coil 9, and then uniformly heat the water in the steam generating box 3. As shown in Figure 6 the combustion stove 4 generates a flame to heat the bottom plate of the box, and the bottom plate of the box transmits heat and heats the water in the steam generating box 3. The smoke gas after heat exchange in the heat exchange coil 9 is discharged through the smoke exhaust pipe 11.

[0031] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-efficiency heat exchange steam-heated rice steamer, characterized in that: The application relates to a heat preservation cabinet body (1) with a cabinet inner cavity, wherein the upper part of the cabinet inner cavity of the heat preservation cabinet body (1) is a rice steaming chamber (2), the lower part of the cabinet inner cavity of the heat preservation cabinet body (1) is a steam generating chamber, the heat preservation cabinet body (1) is provided with a rice steaming cabinet door (21) corresponding to the rice steaming chamber (2); a steam generating box (3) is arranged in the steam generating chamber, the steam generating box (3) has a steam outlet (6) facing the rice steaming chamber (2), the inside of the steam generating box (3) is a water evaporation cavity; the bottom of the steam generating box (3) is closed and has a box bottom plate, the box bottom plate of the steam generating box (3) extends towards the water evaporation cavity and is sealed and provided with a flue gas collecting cylinder (10), the bottom of the steam generating box (3) is provided with a combustion stove (4) corresponding to the flue gas collecting cylinder (10), the combustion stove (4) is provided with a fan (5) corresponding to the flue gas collecting cylinder (10); a heat exchange coil (9) is arranged in the water evaporation cavity, the heat exchange coil (9) is composed of a plurality of layers of coils, each layer of coil is in an S shape, the inlet end of the heat exchange coil (9) is communicated with the flue gas collecting cylinder (10), and a smoke exhaust pipe (11) in sealed communication with the outlet end of the heat exchange coil (9) is arranged on the side wall of the steam generating box (3).

2. The steam heating rice cabinet with high heat exchange efficiency according to claim 1, characterized in that: The steam generating box (3) is arranged on the outside and the inside of the outer layer and the inner layer of a box shell (7) and (8), the heat exchange coil (9) is arranged in the inner layer box shell (8), the outer layer water evaporation cavity is formed between the outer layer box shell (7) and the inner layer box shell (8), the space of the inner layer box shell (8) except the heat exchange coil (9) is the inner layer water evaporation cavity, and the outer layer water evaporation cavity and the inner layer water evaporation cavity are communicated with each other and jointly form the water evaporation cavity.

3. The steam heating rice cabinet with high heat exchange efficiency according to claim 2, characterized in that: The steam generating box (3) is provided with a water inlet pipe and a water outlet pipe in communication with the outer layer water evaporation cavity.

4. The steam heating rice cabinet with high heat exchange efficiency according to claim 1, characterized in that: The heat exchange coil (9) is composed of two layers of coils and a smoke collecting pipe (93), the two layers of coils are each composed of two S-shaped pipes, the two S-shaped pipes of the lower layer of coils are respectively communicated with the flue gas collecting cylinder (10), the two S-shaped pipes of the upper layer of coils are respectively communicated with the smoke collecting pipe (93), and the smoke collecting pipe (93) penetrates through the side wall of the steam generating box (3) and is in sealed connection with the smoke exhaust pipe (11).

5. The steam heating rice cabinet with high heat exchange efficiency according to claim 4, characterized in that: The two S-shaped pipes of the lower layer of coils are a lower layer S-shaped pipe A (91) and a lower layer S-shaped pipe B (92), and the lower layer S-shaped pipe A (91) and the lower layer S-shaped pipe B (92) are arranged in left-right symmetry; the two S-shaped pipes of the upper layer of coils are an upper layer S-shaped pipe A and an upper layer S-shaped pipe B, and the upper layer S-shaped pipe A and the upper layer S-shaped pipe B are arranged in left-right symmetry; the lower layer S-shaped pipe A (91) of the lower layer of coils and the upper layer S-shaped pipe A of the upper layer of coils form an integral pipeline, and the lower layer S-shaped pipe B (92) of the lower layer of coils and the upper layer S-shaped pipe B of the upper layer of coils form an integral pipeline.

6. The steam heating rice cabinet with high heat exchange efficiency according to claim 1, characterized in that: The heat preservation cabinet body (1) is provided with a combustion cabinet door corresponding to the steam generating chamber, and the combustion cabinet door is provided with a combustion switch (41) corresponding to the combustion stove (4).

7. The steam heating rice cabinet with high heat exchange efficiency according to claim 1, characterized in that: The rice steaming chamber (2) is divided into a plurality of layers of rice steaming partitions along the height direction.

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