CN103423827A - Direct-heating two-step high-enthalpy air heater - Google Patents
Direct-heating two-step high-enthalpy air heater Download PDFInfo
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- CN103423827A CN103423827A CN201310384244XA CN201310384244A CN103423827A CN 103423827 A CN103423827 A CN 103423827A CN 201310384244X A CN201310384244X A CN 201310384244XA CN 201310384244 A CN201310384244 A CN 201310384244A CN 103423827 A CN103423827 A CN 103423827A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000005485 electric heating Methods 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 14
- 239000008399 tap water Substances 0.000 abstract description 8
- 235000020679 tap water Nutrition 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 3
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010025 steaming Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 16
- 238000009834 vaporization Methods 0.000 description 11
- 230000008016 vaporization Effects 0.000 description 11
- 238000010792 warming Methods 0.000 description 10
- 238000000889 atomisation Methods 0.000 description 8
- 239000003595 mist Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Abstract
The invention provides a direct-heating two-step high-enthalpy air heater, comprising a rack and a thermal insulation shell; two ends of a containing space formed by the rack and the thermal insulation shell are respectively provided with an exhaust inlet and an exhaust outlet; and a centrifugal fan, an electric heating element, a transition cavity, a steam spray nozzle and an air-steam mixing area are sequentially arranged from the exhaust inlet to the exhaust outlet. Air exhausted from the exhaust inlet passes by the centrifugal fan to become drying hot air after flowing by the electric heating element; the steam spray nozzle and a steam generator are communicated; water steam generated by the steam generator is sprayed to the drying hot air flowing from the electric element direction by the steam spray nozzle; the water steam and the drying hot air are mixed and homogenized in the air-steam mixing area to become wet and hot air; and the wet and hot air is exhausted from the exhaust outlet. Process of heating, temperature rising and drying and process of water supplying, steaming and humidifying can be independently operated or operated in parallel, the actions of heating and humidifying can be achieved without the influence of pressure change of tap water and the noise is small.
Description
Technical Field
The invention relates to an indoor heating and humidifying device, in particular to a direct-heating type two-step air high-enthalpy heater.
Background
At present, there are many existing devices for heating and humidifying air, mainly including:
1. high enthalpy bath device
The high enthalpy bathroom warmer releases heat in a mode of 'parallel ventilation heat release and water supply atomization evaporation heat release': the fan pushes air in the toilet to flow through the fins of the heat storage casting to realize heat absorption and temperature rise, water mist particles sprayed out of the nozzle absorb heat and vaporize on the fins of the heat storage casting, and the heated air and the steam are mixed to form high-enthalpy-value air which is high in temperature and humidity and sprayed into the toilet. When heat is released in parallel, the peak value can reach 13kw, the power of the electric heating tube is more than 4 times, the heating and humidifying capacity is strong, and the temperature and humidity conditions required by bathing can be quickly achieved (generally only 5 min).
2. Micro-fog bathroom heater
The micro-mist bathroom heater takes a toilet as a platform, and heats and humidifies the air in a shower area to reach the temperature and humidity condition of sauna. The principle is that water is crushed into fine water particles with the diameter less than 1 micron and the fine water particles are sprayed into a bathroom, so that the bathroom has a micro-fog function of adjusting the bathroom to a high-humidity space at about 30-45 ℃, and the low-temperature high-humidity micro-fog space which can make a body feel comfortable is realized. Meanwhile, the bathroom air exchange and drying device has the bathroom air exchange and drying functions and can keep the bathroom clean all the time.
3. Steam shower room
The steam shower room is formed by a closed shower room body consisting of a roof and a bottom framework made of acrylic materials and a sliding glass door, and then a steam generator and a control system are installed. The steam shower room has the characteristics of small indoor space, small thermal inertia, good tightness and good heat preservation performance, and can quickly form sauna conditions of medium temperature and high humidity. When the sauna room is operated, the steam generator is electrified to generate normal-pressure saturated water vapor, and the saturated water vapor is injected into the sauna room from the bottom to heat and humidify air in the room, so that the effect of wet sauna is achieved.
The above-mentioned 3 methods for heating and humidifying the air in the toilet have advantages, but all have disadvantages.
The atomization amount and the atomization effect of the nozzle for atomizing the feed water by using the high-enthalpy bathroom warmer depend on the pressure of tap water. The tap water pressure is high, the atomized water amount is high, the atomization effect is good, and therefore the vaporization humidification effect is good; the pressure of tap water is small, the atomization amount is small, the atomization effect is poor, and the vaporization and humidification effect is reduced. The micro-fog bath heater has great noise and is difficult to eliminate in the process of carrying out centrifugal grinding on liquid water by the high-speed operation of a centrifugal machine. In the steam shower room, because the steam generator can only charge steam but can not independently heat and raise the temperature of air, the air in the shower room has insufficient temperature, overlarge humidity, even supersaturation and reduced visibility.
Disclosure of Invention
The invention aims to provide a direct-heating type two-step air high-enthalpy heater, which can realize 3 functional targets of heating, warming and drying, water supply, vaporization and humidification and heating, humidification and parallel running of air high-enthalpy heating modes, wherein the heating, warming and drying and the water supply, vaporization and humidification can respectively and independently run or run in parallel, so that the adverse effect of fluctuation and variation of tap water pressure on the warming and humidification effect of a high-enthalpy bathroom is overcome, the running noise caused by a centrifugal mechanism for generating water mist by a micro-mist bathroom heater is overcome, and the unilateral behavior that the steam shower room only can ' feed water, vaporization and humidification ' but cannot ' heat, warm and dry is overcome.
The invention relates to a direct-heating two-step air high-enthalpy heater, which comprises a frame, wherein an insulating shell is arranged on the frame, a containing space for generating heat and transferring heat is formed between the frame and the insulating shell, two ends of the containing space are respectively provided with an air suction port and an air exhaust port, and a fan, an electric heating element, a transition cavity, a steam nozzle and an air-steam mixing area are sequentially arranged from the air suction port to the air exhaust port; wherein,
the fan is arranged at the air suction inlet of the frame, air sucked from the air suction inlet is boosted by the fan and then sequentially flows through the electric heating element, the transition cavity, the steam nozzle and the air-steam mixing area, and the air is heated and humidified to become warm and humid air and then is discharged into a room from the air outlet;
the electric heating element is electrified to convert electric energy into high-level heat energy, the high-level heat energy is released to air flowing through the electric heating element, the air is heated and dried, and the obtained dry hot air enters the transition cavity;
the steam nozzle is communicated with a steam generator, the steam generated by the steam generator enters the steam nozzle through a connecting pipe and is sprayed with the dry hot air flowing from the direction of the electric heating element, and the steam and the dry hot air are discharged from the air outlet after being mixed and homogenized in the steam mixing area.
In some embodiments, the steam nozzle is a tubular metal cavity, and the surface of the cavity is provided with a plurality of groups of holes.
In some embodiments, the steam generator comprises:
the water tank is communicated with the steam nozzle through a connecting pipe;
the water tank is respectively connected with a water inlet pipe and a water discharge pipe through the water inlet valve and the water discharge valve, and the water inlet valve and the water discharge valve are used for controlling water inlet and water discharge of the water tank;
the electric heating pipe is arranged in the water tank, and after the electric heating pipe is electrified, water in the water tank generates normal-pressure steam;
and the water level measurement and control system is arranged on the water tank and is used for controlling the water level in the water tank.
In some embodiments, the air suction opening and the air exhaust opening are both through holes, and the air suction opening and the air exhaust opening are both arranged on the rack.
In some embodiments, the electrocaloric element is constructed of a tubular, sheet, or mesh electrocaloric material.
In some embodiments, the electric heating element and the windward side/air-out side of the steam nozzle are streamlined, and the end faces of the vertical streamlines are removed.
In some embodiments, the direct heating type two-step air high enthalpy heater is a ceiling type structure or a wall type structure, and the direct heating type two-step air high enthalpy heater is hung on a ceiling of a toilet or hung on a wall of the toilet.
In some embodiments, the direct heating type two-step air high enthalpy heater is further provided with an electric control box, and the electric control box is respectively connected with the fan, the electric heating element and the steam generator and is used for controlling the operation of the fan, the electric heating element and the steam generator.
In some embodiments, the fan is a centrifugal fan.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages and positive effects that:
(1) the invention provides an air high enthalpy heating mode which can respectively and independently run or run in parallel for heating, warming and drying, water supply vaporization and humidification and realizes 3 functional targets of heating, warming and drying, water supply vaporization and humidification and warming and humidification parallel for air in a toilet;
(2) the invention adopts the parallel operation technology of ventilation heat release and water supply atomization evaporation heat release, greatly increases the absolute moisture content of air while improving the air temperature of the toilet, stabilizes or increases the relative humidity of the air, greatly improves the enthalpy value and the warm and humid effect of the air of the toilet, and makes the home sauna possible;
(3) the invention overcomes the adverse effect of fluctuation of tap water pressure on the heating and humidifying effect of the toilet, reduces the operation noise of the heating and humidifying device, and overcomes the unilateral behavior that the steam shower room only can supply water, vaporize and humidify but can not heat, heat and dry.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the steam generator and the steam nozzle.
Description of the symbols:
1-frame
2-Heat insulating housing
3-centrifugal fan
4-electric heating element
5-steam generator
6-steam nozzle
7-gas-steam mixing zone
8-air suction inlet
9-air outlet
10-electric control box
11-drying hot air
12-warm and humid air
51-Water tank
52-electric heater
53-water inlet valve
54-water discharge valve
55-water level control system
56-water inlet pipe
57-water drainage pipe
61-eyelet
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings, which illustrate embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.
Referring to fig. 1-2, the present invention provides a direct heating type two-step air high enthalpy heater installed on a ceiling of a toilet or hung from a wall of the toilet in a ceiling-mounted or wall-mounted manner. As shown in fig. 1, the direct heating type two-step air high enthalpy heater comprises a frame 1, wherein an air suction opening 8 and an air exhaust opening 9 are arranged on the frame 1; the frame 1 is also provided with a heat insulation shell 2, the frame 1 is connected with the heat insulation shell 2 to form a containing space for generating heat and transferring heat, and the air suction opening 8 and the air exhaust opening 9 are respectively positioned at two ends of the containing space. From the air suction opening 8, a fan, an electric heating element 4, a transition cavity, a steam nozzle 6 and a gas-steam mixing area 7 are sequentially arranged till an air outlet 9, wherein the fan adopts a centrifugal fan 3.
Specifically, the centrifugal fan 3 is disposed at the air inlet 8 of the frame 1, and air sucked from the air inlet 8 is boosted by the centrifugal fan 3 and flows to the electric heating element 4. After the electric heating element 4 is electrified, the electric energy is converted into high-level heat energy which is released to the air flowing through the electric heating element 4, so that the air is heated and dried, and dry hot air 11 is obtained and enters the transition cavity; the electric heating element 4 is made of tubular, sheet or net electric heating materials, and can be determined according to specific conditions.
Referring to fig. 2, the steam nozzle 6 is a tubular metal cavity with a plurality of holes 61 distributed on the surface of the cavity, and the steam nozzle 6 is connected to a steam generator 5. Specifically, the steam generator 5 comprises a water tank 51, the water tank 51 is communicated with the steam nozzle 6 through a connecting pipe, the water tank 51 is provided with a water inlet valve 53 and a water discharge valve 54, the water inlet valve 53 and the water discharge valve 5 are both electromagnetic valves, and the water tank 51 is respectively connected with a water inlet pipe 56 and a water discharge pipe 57 through the water inlet valve 53 and the water discharge valve 54; an electric heating tube 52 is arranged in the water tank 51, and the water in the water tank is heated to form steam after the electric heating tube 52 is electrified; the water tank 51 is further provided with a water level control system 55 for ensuring that the water level in the water tank 51 is floated within a certain interval.
The operating principle of the steam generator 5 is as follows: when the direct heating type two-step air high enthalpy heater works, the water inlet valve 53 is opened, water is injected into the water tank 51 through the water inlet pipe 56, when the water level in the water tank 51 reaches a certain requirement, the water inlet valve 53 is closed to stop water injection, the electric heating pipe 52 is electrified and heated to enable water in the water tank to form water vapor, and the water vapor is sprayed out through the vapor nozzle 6; meanwhile, the water level control system 55 monitors the water level in the water tank 51, and controls the water inlet valve 53 to open and fill the water tank 51 when the water in the water tank 51 is evaporated to a level lower than a certain value, thereby ensuring that the water level in the water tank is always kept floating within a certain interval. When the direct heating type two-step air high enthalpy heater does not operate, the water in the water tank 51 is discharged through the drain valve 54, preventing the water from not deteriorating for a long time, and simultaneously preventing the water from corroding the water tank 51.
Steam generated by the steam generator 5 is sprayed out by the steam nozzle 6 and enters dry hot air from the electric heating element 4, and is uniformly mixed in the air-steam mixing area 7 to obtain warm and humid air, and the warm and humid air flows into the toilet through the air outlet 9, so that the heating and humidifying effects in the whole toilet are realized.
In the present invention, the air outlet 9 and the air inlet 8 are through holes provided on the frame 1, and the shape of the air outlet 9 and the air inlet 8 is not limited in the present invention, considering the characteristics of air flow and the installation position of each component provided on the frame 1.
In the invention, the windward side/air outlet side of the electric heating element 4 and the steam nozzle 6 are streamlined, and the end surface of a vertical streamline is removed, thereby achieving the effect of reducing the resistance of air circulation.
The invention further comprises an electric control box 10, wherein the electric control box 10 can be arranged inside the direct-heating type two-step air high-enthalpy heater or outside the direct-heating type two-step air high-enthalpy heater, and the arrangement is not limited here. The electric control box 10 is used for controlling the operation of the centrifugal fan 3, the electric heating element 4 and the steam generator respectively.
The centrifugal fan 3, the electric heating element 4 and the steam generator 5 are mutually independently arranged and respectively controlled by the electric control box 10 to operate, so that the heating, warming and drying and the water supply, vaporization and humidification can respectively and independently operate or operate in parallel, and 3 functional targets of heating, warming and drying, water supply, vaporization and humidification and heating, humidification and parallelization of air in a toilet are realized. Meanwhile, the invention adopts the parallel operation technology of ventilation heat release and water supply atomization evaporation heat release, greatly increases the absolute moisture content of air while improving the air temperature of the toilet, stabilizes or increases the relative humidity of the air, greatly improves the enthalpy value and the warm and humid effect of the air of the toilet, and makes the home sauna possible. In addition, the invention also overcomes the adverse effect of fluctuation of tap water pressure on the heating and humidifying effect of the toilet in the prior art, reduces the operation noise of the heating and humidifying device, and overcomes the unilateral behavior that the steam shower room only can supply water for vaporization and humidification but can not heat, heat and dry.
In summary, the present invention provides a direct heating type two-step air high enthalpy heater, which comprises a frame and a heat insulation casing, wherein an air suction opening and an air exhaust opening are respectively arranged at two ends of a containing space formed by the frame and the heat insulation casing, and a centrifugal fan, an electric heating element, a transition cavity, a steam nozzle, an air-steam mixing region and the air exhaust opening are sequentially arranged from the air suction opening. Air sucked from the air suction opening passes through the centrifugal fan and then flows through the electric heating element to obtain dry hot air; the steam nozzle is communicated with the steam generator, the steam generated by the steam generator is sprayed into the dry hot air flowing from the direction of the electric heating element through the steam nozzle, and the steam and the dry hot air are mixed and homogenized in the steam mixing area to obtain warm and humid air which is discharged through the air outlet. The heating, warming and drying and the water supply, vaporization and humidification can respectively and independently run or run in parallel, play a role in warming and humidifying, are not influenced by the pressure change of tap water, and have low noise.
It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope of the invention. Although embodiments of the present invention have been described, it is to be understood that the present invention should not be limited to those embodiments, and that changes and modifications may be made by one skilled in the art within the spirit and scope of the present invention as defined by the appended claims.
Claims (9)
1. A direct-heating two-step air high-enthalpy heater is characterized by comprising a rack, wherein an insulating shell is arranged on the rack, a containing space for generating heat and transferring heat is formed between the rack and the insulating shell, an air suction port and an air exhaust port are respectively arranged at two ends of the containing space, and a fan, an electric heating element, a transition cavity, a steam nozzle and an air-steam mixing area are sequentially arranged from the air suction port to the air exhaust port; wherein,
the fan is arranged at the air suction inlet of the frame, air sucked from the air suction inlet is boosted by the fan and then sequentially flows through the electric heating element, the transition cavity, the steam nozzle and the air-steam mixing area, and the air is heated and humidified to become warm and humid air and then is discharged into a room from the air outlet;
the electric heating element is electrified to convert electric energy into high-level heat energy, the high-level heat energy is released to air flowing through the electric heating element, the air is heated and dried, and the obtained dry hot air enters the transition cavity;
the steam nozzle is communicated with a steam generator, the steam generated by the steam generator enters the steam nozzle through a connecting pipe and is sprayed with the dry hot air flowing from the direction of the electric heating element, and the steam and the dry hot air are discharged from the air outlet after being mixed and homogenized in the steam mixing area.
2. The direct heating type two-step air high enthalpy heater according to claim 1, wherein the steam nozzle is a tubular metal cavity, and a plurality of sets of holes are distributed on the surface of the cavity.
3. The direct heating type two-step air high enthalpy heater according to claim 1, characterized in that the steam generator comprises:
the water tank is communicated with the steam nozzle through a connecting pipe;
the water tank is respectively connected with a water inlet pipe and a water discharge pipe through the water inlet valve and the water discharge valve, and the water inlet valve and the water discharge valve are used for controlling water inlet and water discharge of the water tank;
the electric heating pipe is arranged in the water tank, and after the electric heating pipe is electrified, water in the water tank generates normal-pressure steam;
and the water level measurement and control system is arranged on the water tank and is used for controlling the water level in the water tank.
4. The direct-heating type two-step air high enthalpy heater according to claim 1, characterized in that the air suction opening and the air outlet are both through holes, and both the air suction opening and the air outlet are disposed on the frame.
5. A direct heating type two step air high enthalpy heater according to claim 1, characterized in that the electric heating element is composed of tubular, sheet or mesh electric heating material.
6. The direct-heating type two-step air high enthalpy heater according to claim 1, characterized in that the windward/air-out surfaces of the electric heating element and the steam nozzle are streamlined to remove the end surface of the vertical streamline.
7. The direct heating type two-step air high enthalpy heater according to claim 1, characterized in that the direct heating type two-step air high enthalpy heater is a ceiling type structure or a wall type structure, and the direct heating type two-step air high enthalpy heater is hung on a ceiling of a toilet or on a wall of the toilet.
8. The direct-heating type two-step air high enthalpy heater according to claim 1, further provided with an electric control box, and the electric control box is respectively connected with the fan, the electric heating element and the steam generator, and is used for controlling the operation of the fan, the electric heating element and the steam generator.
9. The direct heating type two-step air high enthalpy heater according to claim 1, characterized in that the fan is a centrifugal fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310384244.XA CN103423827B (en) | 2013-08-29 | 2013-08-29 | A kind of direct-heating-type two-step air height enthalpy heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384244.XA CN103423827B (en) | 2013-08-29 | 2013-08-29 | A kind of direct-heating-type two-step air height enthalpy heater |
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| CN103423827A true CN103423827A (en) | 2013-12-04 |
| CN103423827B CN103423827B (en) | 2016-12-28 |
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| CN201310384244.XA Active CN103423827B (en) | 2013-08-29 | 2013-08-29 | A kind of direct-heating-type two-step air height enthalpy heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286762A (en) * | 2017-12-18 | 2018-07-17 | 广州科技职业技术学院 | Bathroom air-conditioning system |
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| CN201233097Y (en) * | 2008-04-10 | 2009-05-06 | 潘新国 | Heater unit with steam generator |
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| CN202083039U (en) * | 2011-05-10 | 2011-12-21 | 沈学明 | Air conditioner with humidification function |
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| CN103423827B (en) | 2016-12-28 |
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Effective date of registration: 20151222 Address after: Jiaxing City, Zhejiang province 314011 Wang Zhen Mei Xiuzhou District Road No. 399 Applicant after: Zhejiang Dinmei Electrical Appliance Co., Ltd. Address before: 200237 Shanghai, Hongmei South Road, No. 777, the bottom floor, room 53, 2101 Applicant before: Shanghai Bohan Thermal Energy Technology Co., Ltd. |
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Address after: Jiaxing City, Zhejiang province 314011 Wang Zhen Mei Xiuzhou District Road No. 399 Applicant after: Zhejiang Limited by Share Ltd Address before: Jiaxing City, Zhejiang province 314011 Wang Zhen Mei Xiuzhou District Road No. 399 Applicant before: Zhejiang Dinmei Electrical Appliance Co., Ltd. |
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Denomination of invention: Direct-heating two-step high-enthalpy air heater Effective date of registration: 20190122 Granted publication date: 20161228 Pledgee: Agricultural Bank of China Limited by Share Ltd Jiaxing Xiuzhou branch Pledgor: Zhejiang Limited by Share Ltd Registration number: 2019330000022 |
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Date of cancellation: 20200108 Granted publication date: 20161228 Pledgee: Agricultural Bank of China Limited by Share Ltd Jiaxing Xiuzhou branch Pledgor: Zhejiang Dingmei Zhifang Co., Ltd. Registration number: 2019330000022 |
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Denomination of invention: Direct-heating two-step high-enthalpy air heater Effective date of registration: 20200108 Granted publication date: 20161228 Pledgee: Agricultural Bank of China Limited by Share Ltd Jiaxing Xiuzhou branch Pledgor: Zhejiang Dingmei Zhifang Co., Ltd. Registration number: Y2020330000012 |