CN209802165U - Air disturbance device of ice storage equipment - Google Patents
Air disturbance device of ice storage equipment Download PDFInfo
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- CN209802165U CN209802165U CN201920518986.XU CN201920518986U CN209802165U CN 209802165 U CN209802165 U CN 209802165U CN 201920518986 U CN201920518986 U CN 201920518986U CN 209802165 U CN209802165 U CN 209802165U
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- ice storage
- storage equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The embodiment of the utility model discloses an air disturbance device of ice storage equipment, which is used for the ice storage equipment, the ice storage equipment comprises a heat preservation box body and a box cover arranged on the heat preservation box body, it is characterized in that the air disturbance device of the ice storage equipment comprises an air pump which is positioned outside the heat preservation box body, the air pump is connected with an air inlet pipeline which penetrates through the box cover and is communicated with an air conveying main pipe arranged at the bottom of the heat preservation box body, the gas transmission main pipe is communicated with a PVC pipeline arranged at the bottom of the heat preservation box body through a gas transmission branch pipe, the PVC pipeline is evenly provided with a plurality of air outlet holes and further comprises an air outlet pipeline, one end of the air outlet pipeline penetrates through the box cover and is located on the upper portion of the heat preservation box body, and the other end of the air outlet pipeline is communicated with the air pump. The utility model discloses have heat exchange efficiency height, convenient operation and effectively improve the speed of ice storage equipment system ice and ice-melt.
Description
Technical Field
The embodiment of the utility model provides an ice storage equipment technical field, concretely relates to ice storage equipment air disturbance device.
Background
With the rapid development of economy in China, the electricity consumption continuously rises, and particularly, the phenomenon of insufficient electricity supply occurs at the peak time of electricity consumption and the phenomenon of excessive electricity supply occurs at the low peak time of electricity consumption. Meanwhile, most areas in China have an objective condition of low peak-to-valley electricity price, so in order to save electricity resources, the ice storage device is used for refrigerating at night when electricity is used at low peaks, and the ice stored in the ice storage device is used for refrigerating at daytime, so that peaks can be shifted and valleys can be filled, and the electricity utilization peak periods can be perfectly staggered, so that the electricity utilization pressure of a power grid is reduced for the country, and the electricity cost is saved for users.
At present, the existing ice storage device has the problems of low heat exchange efficiency and high residual ice quantity, so that the cold quantity is not fully released.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides an ice storage equipment air disturbance device to solve among the prior art because the ice storage device has the low and remaining ice gauge height of heat exchange efficiency and lead to the insufficient problem of cold volume release.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
The embodiment of the utility model provides an air disturbance device of ice storage equipment, which is used for the ice storage equipment, the ice storage equipment comprises a heat preservation box body and a box cover arranged on the heat preservation box body, it is characterized in that the air disturbance device of the ice storage equipment comprises an air pump which is positioned outside the heat preservation box body, the air pump is connected with an air inlet pipeline which penetrates through the box cover and is communicated with an air conveying main pipe arranged at the bottom of the heat preservation box body, the gas transmission main pipe is communicated with a PVC pipeline arranged at the bottom of the heat preservation box body through a gas transmission branch pipe, the PVC pipeline is evenly provided with a plurality of air outlet holes and further comprises an air outlet pipeline, one end of the air outlet pipeline penetrates through the box cover and is located on the upper portion of the heat preservation box body, and the other end of the air outlet pipeline is communicated with the air pump.
Further, the heat preservation box body comprises an outer layer, a middle layer and an inner layer, wherein the outer layer is composed of a metal plate, the middle layer is composed of a polyurethane foaming heat preservation plate, and the inner layer is composed of a galvanized steel plate.
Further, internal first coil pipe support and the second coil pipe support of being provided with of insulation box, just the second coil pipe support is fixed to be set up the top of first coil pipe support, be provided with first serpentine coil pipe and second serpentine coil pipe in the first coil pipe support, first serpentine coil pipe is for advancing down and goes out, just second serpentine coil pipe is for advancing down, be provided with third serpentine coil pipe and fourth serpentine coil pipe in the second coil pipe support, third serpentine coil pipe is for advancing down and goes out, just fourth serpentine coil pipe is for advancing down, all be provided with the fin on third serpentine coil pipe and the fourth serpentine coil pipe.
Furthermore, the bottom in the heat preservation box body is located below the first serpentine coil and the second serpentine coil and is evenly provided with a plurality of longitudinally distributed PVC pipelines, and each PVC pipeline is communicated with the gas transmission main pipe through the gas transmission branch pipe.
Further, a check valve is arranged at a position, above the box cover, of the air inlet pipeline.
Furthermore, a filter is arranged on the air outlet pipeline and is positioned outside the heat preservation box body.
Furthermore, the inner layer is made of a galvanized carbon steel plate, and the inner side wall of the inner layer is coated with epoxy zinc-rich paint.
Furthermore, the box cover is composed of a galvanized steel sheet and a heat insulation layer, the galvanized steel sheet is arranged on the upper surface of the heat insulation layer, and the heat insulation layer is composed of a polyurethane foaming heat insulation board.
The embodiment of the utility model provides a have following advantage: the embodiment of the utility model provides an air disturbance device of ice storage equipment, which is used for the ice storage equipment, the ice storage equipment comprises a heat preservation box body and a box cover arranged on the heat preservation box body, it is characterized in that the air disturbance device of the ice storage equipment comprises an air pump which is positioned outside the heat preservation box body, the air pump is connected with an air inlet pipeline which penetrates through the box cover and is communicated with an air conveying main pipe arranged at the bottom of the heat preservation box body, the gas transmission main pipe is communicated with a PVC pipeline arranged at the bottom of the heat preservation box body through a gas transmission branch pipe, the PVC pipeline is uniformly provided with a plurality of air outlet holes and further comprises an air outlet pipeline, one end of the air outlet pipeline penetrates through the box cover and is positioned at the upper part of the heat preservation box body, and the other end of the air outlet pipeline is communicated with the air pump; air is blown into the heat insulation box body through the air inlet pipeline by the arranged air disturbance device of the ice storage equipment to disturb water in the heat insulation box body, so that the convection heat exchange efficiency of the water in the heat insulation box body is enhanced, the uniform water temperature in the whole heat insulation box body is ensured, the heat exchange efficiency of the ice storage equipment is improved, the ice melting plastic speed is increased, and the water outlet temperature is lower; in addition, the temperature gradient difference can be reduced, and ice making and ice melting are promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural diagram of an air disturbing device of an ice storage apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a plurality of PVC pipes distributed in an air disturbing device of an ice storage apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an ice storage apparatus according to an embodiment of the present invention.
In the figure: 100. a heat preservation box body; 101. an outer layer, 102, an intermediate layer; 103. an inner layer; 104. a first serpentine coil; 105. a second serpentine coil; 106. a third serpentine coil; 107. a fourth serpentine coil; 108. a fin; 109. a base; 110. a first fixing plate; 111. a first support plate; 112. a second fixing plate; 113. a connecting plate; 114. a third fixing plate; 115. a second support plate; 116. a fourth fixing plate; 117. a liquid inlet header pipe; 118. a liquid outlet main pipe; 119. a first liquid inlet distribution pipe; 120. a first liquid outlet distribution pipe; 121. a second liquid inlet distribution pipe; 122. a second liquid outlet distribution pipe; 123. a third liquid inlet distribution pipe; 124. a third liquid outlet distribution pipe; 125. a fourth liquid inlet distribution pipe; 126. a fourth liquid outlet distribution pipe; 200. a box cover; 201. a galvanized steel sheet; 202. a heat-insulating layer; 300. an air pump; 301. an air intake line; 302. a gas transmission main pipe; 303. a gas delivery branch pipe; 304. PVC pipes; 305. an air outlet; 306. an air outlet pipeline; 307. a check valve; 308. and (3) a filter.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides an air disturbance device for ice storage equipment, the air disturbance device for ice storage equipment is used for ice storage equipment, the ice storage equipment includes a thermal insulation box 100 and a box cover 200 disposed on the thermal insulation box 100, the air disturbance device for ice storage equipment includes an air pump 300, the air pump 300 is disposed outside the thermal insulation box 100, the air pump 300 is connected to an air inlet pipeline 301, the air inlet pipeline 301 penetrates through the box cover 200 and is communicated with an air delivery main 302 disposed at the bottom of the thermal insulation box 100, the air delivery main 302 is communicated with a PVC pipeline 304 disposed at the bottom of the thermal insulation box 100 through an air delivery branch pipe 303, the PVC pipeline 304 is uniformly provided with a plurality of air outlets 305 and further includes an air outlet pipeline 306, one end of the air outlet pipeline 306 penetrates through the box cover 200 and is disposed at the upper portion of the thermal insulation box 100, preferably, the air outlet pipe 306 is connected to the air pump 300 at the other end above the water level in the thermal insulation box 100. Air is blown into the heat insulation box body through the air inlet pipeline by the arranged air disturbance device of the ice storage equipment to disturb water in the heat insulation box body, so that the convection heat exchange efficiency of the water in the heat insulation box body is enhanced, the uniform water temperature in the whole heat insulation box body is ensured, the heat exchange efficiency of the ice storage equipment is improved, the ice melting plastic speed is increased, and the water outlet temperature is lower; in addition, the temperature gradient difference can be reduced, and ice making and ice melting are promoted.
An embodiment of the utility model provides a pair of ice-storage device, insulation box 100 includes outer 101, intermediate level 102 and inlayer 103, outer 101 comprises the metal sheet, and intermediate level 102 comprises polyurethane foaming heated board, inlayer 103 comprises galvanized steel sheet, be provided with first coil pipe support and second coil pipe support in insulation box 100, just second coil pipe support is fixed to be set up the top of first coil pipe support, be provided with first serpentine coil 104 and second serpentine coil 105 in the first coil pipe support, first serpentine coil 104 is for advancing from top to bottom, just second serpentine coil 105 is for advancing from bottom to top, be provided with third serpentine coil 106 and fourth coil 107 in the second coil pipe support, third serpentine coil 106 is for advancing from top to bottom, just fourth serpentine coil 107 is for advancing from top to bottom, can ensure above-mentioned first serpentine coil 104, The second serpentine 105, the third serpentine 106 and the fourth serpentine 107 are evenly frozen; the third serpentine coil 106 and the fourth serpentine coil 107 are both provided with fins 108.
Through the design, the fins 108 are arranged on the third serpentine coil 106 and the fourth serpentine coil 107 at the upper part in the heat insulation box body 100, and the icing thickness is reduced, so that the icing efficiency is improved; in the ice melting process, as the secondary refrigerants in the first serpentine coil 104, the second serpentine coil 105, the third serpentine coil 106 and the fourth serpentine coil 107 are in a forced convection state, the heat exchange coefficient is large, the thermal resistance is small, the thermal conductivity of steel is large, the thermal resistance of the wall of the steel pipe is small, the main obstacles influencing the heat exchange are concentrated on the natural convection heat exchange of the outer wall of the steel pipe (the water outside the coil is basically in a static state), and the fins 108 on the third serpentine coil 106 and the fourth serpentine coil 107 greatly improve the heat exchange area of the outer wall of the coil and improve the ice melting efficiency of the coil; in addition, because the density of ice is less than water, ice can constantly come up at the in-process that melts, when ice come up to three serpentine coil 106 and fourth serpentine coil 107 on fin 108 near, with fin 108 direct contact greatly increased heat exchange efficiency, is chopped by the fin here simultaneously, prevents that big ice-cube from continuing to come up, has solved the ten thousand years ice phenomenon.
The embodiment of the utility model provides a pair of ice-storage device, first coil pipe support includes base 109, first fixed plate 110, first backup pad 111 and second fixed plate 112, the fixed 110 setting of first fixed plate is in the left side of base 109, second fixed plate 112 is fixed to be set up the right side of base 109, first backup pad 111 is fixed to be set up on the base 109 and be located between first fixed plate 110 and the second fixed plate 112. Through above-mentioned design, improve the stability that first serpentine 104 and second serpentine 105 fix in first coil support, fail safe nature obtains promoting.
The embodiment of the utility model provides a pair of ice-storage equipment air disturbance device, the bottom is located in heat preservation box 100 first serpentine coil 104 and second serpentine coil 105's below evenly is provided with a plurality of longitudinal distributions PVC pipeline 304, every PVC pipeline 304 passes through gas transmission branch pipe 303 with gas transmission house steward 302 is linked together. Through the PVC pipelines 304, the pressing air flow generated by the air pump is uniformly distributed, so that the effect of stirring the water in the heat preservation box body is achieved.
The embodiment of the utility model provides a pair of ice-storage equipment air disturbance device, air inlet pipe 301 is located the position of case lid 200 top is provided with check valve 307. Control of the inlet line 301 is achieved by the provision of a check valve 307.
The embodiment of the utility model provides a pair of ice-storage equipment air disturbance device, it is provided with filter 308 on the gas outlet pipe 306, just filter 308 is located the outside of insulation box 100.
The embodiment of the utility model provides a pair of ice-storage device, second coil pipe support includes connecting plate 113, third fixed plate 114, second backup pad 115 and fourth fixed plate 116, connecting plate 113 is fixed to be set up the top of first fixed plate 110, first backup pad 111 and second fixed plate 112, third fixed plate 114 is fixed to be set up connecting plate 113's left side, fourth fixed plate 116 is fixed to be set up connecting plate 113's right side, second backup pad 115 is fixed to be set up on connecting plate 113 and be located between third fixed plate 114 and the fourth fixed plate 116. Through above-mentioned design, improve the stability that third serpentine coil 106 and fourth serpentine coil 107 were fixed in the second coil support, fail safe nature obtains promoting, and life obtains the extension.
The embodiment of the utility model provides a pair of ice storage device, still be provided with feed liquor house steward 117 and play liquid house steward 118 in the insulation box 100, just feed liquor house steward 117 all is located with play liquid house steward 118 first fixed plate 110 with the left side of third fixed plate 114. During ice making, the low-temperature coolant enters the first serpentine coil 104, the second serpentine coil 105, the third serpentine coil 106 and the fourth serpentine coil 107 from the liquid inlet manifold 117, so that the outer surfaces of the first serpentine coil 104, the second serpentine coil 105, the third serpentine coil 106 and the fourth serpentine coil 107 are frozen, and the coolant with the increased temperature flows out through the liquid outlet manifold 2.
The embodiment of the utility model provides a pair of ice storage device, the inlet of first serpentine coil 104 through first feed liquor distributing pipe 119 with feed liquor house steward 117 is linked together, the liquid outlet of first serpentine coil 119 through first play liquid distributing pipe 120 with play liquid house steward 118 is linked together, just first feed liquor distributing pipe 119 is located first play liquid distributing pipe 120's below.
The embodiment of the utility model provides a pair of ice storage device, second serpentine coil 105's inlet through second feed liquor distribution pipe 121 with feed liquor house steward 117 is linked together, second serpentine coil 105's liquid outlet through the second go out liquid distribution pipe 122 with it is linked together to go out liquid house steward 118, just second feed liquor distribution pipe 121 is located the second goes out the top of liquid distribution pipe 122.
An embodiment of the utility model provides a pair of ice storage device, the inlet of third serpentine coil 106 through third feed liquor distributing pipe 123 with feed liquor house steward 117 is linked together, the liquid outlet of third serpentine coil 106 through the third go out liquid distributing pipe 124 with it is linked together to go out liquid house steward 118, just third feed liquor distributing pipe 123 is located the third goes out the below of liquid distributing pipe 124.
The embodiment of the utility model provides a pair of ice storage device, fourth serpentine coil 107's inlet through fourth feed liquor distributing pipe 125 with feed liquor house steward 117 is linked together, fourth serpentine coil 107's liquid outlet through the fourth go out liquid distributing pipe 126 with it is linked together to go out liquid house steward 118, just fourth feed liquor distributing pipe 125 is located the fourth goes out the top of liquid distributing pipe 126.
The embodiment of the utility model provides a pair of ice storage device, inlayer 103 comprises galvanized steel carbon steel board, just the inside wall coating of inlayer 103 has the rich zinc lacquer of epoxy. Through the design, the strength of the heat preservation box body 100 of the ice storage device is increased, and the service life of the ice storage device is prolonged; in addition, the epoxy zinc-rich paint is coated on the inner side wall of the inner layer 103, so that the water resistance and the rust resistance of the inner layer can be improved, and the service life of the heat preservation box body 100 is further prolonged.
The embodiment of the utility model provides a pair of ice storage device, case lid 200 comprises galvanized steel sheet 201 and heat preservation 202, just galvanized steel sheet 201 sets up the upper surface of heat preservation 202, heat preservation 202 comprises polyurethane foam insulation board. Through the design, the strength of the box cover 200 is further increased, and the heat preservation layer is arranged on the lower surface of the box cover, so that the heat preservation effect of the box cover 200 is better, and the heat exchange performance of the ice storage device is further improved.
The embodiment of the utility model provides a pair of ice-storage device, second coil pipe support still includes roof 127, roof 127 is fixed to be set up the top of third fixed plate 114, second backup pad 115 and fourth fixed plate 116, roof 127 is used for fixing third fixed plate 114, second backup pad 115 and fourth fixed plate 116, and fail safe nature obtains promoting, in addition, still can be used to protect the fin 108 that sets up on third serpentine coil 106 and the fourth serpentine coil 107, and then prolongs its life.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The utility model provides an ice storage equipment air disturbance device, this ice storage equipment air disturbance device are used for ice storage equipment, ice storage equipment includes the insulation box and sets up case lid on the insulation box, a serial communication port, ice storage equipment air disturbance device includes the air pump, the air pump is located the outside of insulation box, just the air pump is connected with the air inlet line, the air inlet line runs through the case lid is in with the setting the gas transmission house steward of insulation box bottom is linked together, gas transmission house steward is in through gas transmission branch pipe and setting the PVC pipeline of insulation box bottom is linked together, evenly be provided with a plurality of ventholes on the PVC pipeline, still include the venthole way, the one end of venthole way runs through the case lid just is located the upper portion of insulation box, just the other end of venthole way with the air pump is linked together.
2. The ice storage equipment air disturbance device of claim 1, wherein the thermal insulation box body comprises an outer layer, a middle layer and an inner layer, the outer layer is made of metal plates, the middle layer is made of polyurethane foam thermal insulation plates, and the inner layer is made of galvanized steel plates.
3. The air disturbing device for the ice storage equipment according to claim 2, wherein a first coil support and a second coil support are arranged in the heat preservation box body, the second coil support is fixedly arranged at the top of the first coil support, a first serpentine coil and a second serpentine coil are arranged in the first coil support, the first serpentine coil is in and out from the lower portion, the second serpentine coil is in and out from the upper portion, a third serpentine coil and a fourth serpentine coil are arranged in the second coil support, the third serpentine coil is in and out from the lower portion, the fourth serpentine coil is in and out from the upper portion, and fins are arranged on the third serpentine coil and the fourth serpentine coil.
4. The air disturbing device for the ice storage equipment as claimed in claim 3, wherein a plurality of PVC pipes are uniformly arranged at the bottom in the heat preservation box body below the first serpentine coil and the second serpentine coil, and each PVC pipe is communicated with the gas transmission main pipe through the gas transmission branch pipe.
5. The ice storage equipment air disrupting device of claim 1, wherein the air intake conduit is provided with a check valve at a location above the cover.
6. the air disturbing device for the ice storage facility of claim 1, wherein a filter is disposed on the air outlet pipeline and is located outside the thermal insulation box.
7. The ice storage equipment air-disturbing device of claim 2, wherein the inner layer is made of a galvanized carbon steel sheet, and an inner sidewall of the inner layer is coated with epoxy zinc-rich paint.
8. The ice storage facility air-disturbing device of claim 1, wherein the cover is formed of a galvanized steel sheet and an insulating layer, and the galvanized steel sheet is disposed on an upper surface of the insulating layer, and the insulating layer is formed of a polyurethane foam insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920518986.XU CN209802165U (en) | 2019-04-16 | 2019-04-16 | Air disturbance device of ice storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920518986.XU CN209802165U (en) | 2019-04-16 | 2019-04-16 | Air disturbance device of ice storage equipment |
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| Publication Number | Publication Date |
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| CN209802165U true CN209802165U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920518986.XU Active CN209802165U (en) | 2019-04-16 | 2019-04-16 | Air disturbance device of ice storage equipment |
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| CN (1) | CN209802165U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880582A (en) * | 2020-09-07 | 2020-11-03 | 合肥微睿光电科技有限公司 | Automatic bath solution temperature balancing system of aluminum anodic oxidation tank |
| CN111928390A (en) * | 2020-08-13 | 2020-11-13 | 天津大学 | High-efficient ice cold-storage system of evaporation condensation |
| CN111928550A (en) * | 2020-08-13 | 2020-11-13 | 天津大学 | Multifunctional ice storage tank equipment |
-
2019
- 2019-04-16 CN CN201920518986.XU patent/CN209802165U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928390A (en) * | 2020-08-13 | 2020-11-13 | 天津大学 | High-efficient ice cold-storage system of evaporation condensation |
| CN111928550A (en) * | 2020-08-13 | 2020-11-13 | 天津大学 | Multifunctional ice storage tank equipment |
| CN111880582A (en) * | 2020-09-07 | 2020-11-03 | 合肥微睿光电科技有限公司 | Automatic bath solution temperature balancing system of aluminum anodic oxidation tank |
| CN111880582B (en) * | 2020-09-07 | 2021-07-13 | 合肥微睿光电科技有限公司 | Automatic bath solution temperature balancing system of aluminum anodic oxidation tank |
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| TR01 | Transfer of patent right |
Effective date of registration: 20221124 Address after: No. 202, Floor 2, Maker Building, Pingluo Industrial Park, Pingluo County, Shizuishan City, Ningxia Hui Autonomous Region, 753400 Patentee after: Ningxia Yuanyuan Environmental Technology Co.,Ltd. Address before: 300110 Bolang Park 7-2903 (Science Park) at the intersection of Changjiang Road and Nanfeng Road, Nankai District, Tianjin Patentee before: Li Chengjun |