CN211451395U - High-effect air energy heat pump hot water unit - Google Patents
High-effect air energy heat pump hot water unit Download PDFInfo
- Publication number
- CN211451395U CN211451395U CN201921133034.2U CN201921133034U CN211451395U CN 211451395 U CN211451395 U CN 211451395U CN 201921133034 U CN201921133034 U CN 201921133034U CN 211451395 U CN211451395 U CN 211451395U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- wall surface
- hot water
- installation box
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000009434 installation Methods 0.000 claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a high-effect air energy heat pump hot water unit, include: the utility model relates to the technical field of hot water units, the hot water unit comprises an installation box and a layered plate, wherein the installation box is of a rectangular box structure, the bottom end of the right side of the front wall surface of the installation box is provided with a heat dissipation port, the left side wall surface of the installation box is provided with an air inlet, and the left end and the right end of the layered plate are respectively welded on the left side wall surface and the right side wall surface in the installation box; the exchanged low-temperature and low-pressure gas is gasified by an expansion valve and then enters an evaporator for heat absorption, so that the damage caused by overhigh temperature is prevented; the design has the advantages of high heat exchange efficiency and high heating speed, and the energy generated by the cyclic utilization equipment reduces the overall loss and saves a large amount of energy.
Description
Technical Field
The utility model relates to a hot water unit technical field specifically is a high-effect air energy heat pump hot water unit.
Background
The air source heat pump hot water unit is an energy-saving environment-friendly hot water supply device which can replace a boiler and is not limited by resources, green pollution-free cold coal is adopted to absorb heat in air, and life hot water with the temperature of more than 50 ℃ is produced by the work of a compressor, the annual C.O.P. value reaches more than 3.0, and the air source heat pump hot water unit is suitable for indoor swimming pools, hotels, villas, hair salons, bath footherapy, factories, farms and other places needing hot water heat sources; along with the development of economy, the requirements of people on life quality and bathing are higher and higher, the requirements of people on cooling and bathing are higher and higher, the requirements of people on comfort, energy conservation and safety cannot be met by gas water heaters, electric water heaters and solar water heaters, the ratio of cold water to hot water is 1:9 in developed countries in Europe and America, cold water in the Europe and America is only used for drinking or flushing toilets and washing vehicles, hot water is used in other aspects, and the market share of household central water heaters in the Europe and America is over 90%.
The air energy water heater is a device for providing hot water by compressing gas and then exchanging heat between the compressed high-temperature gas and water, and has the advantage of energy saving compared with the existing electric or gas water heater, but the existing air energy water heater only simply utilizes the heat energy of the compressed air for conversion, so that the consumption of the device is high when the device is used for a long time, the heating rate is low, and a large amount of energy is wasted, therefore, aiming at the problems, a high-efficiency air energy heat pump hot water unit is designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-effect air energy heat pump hot water unit to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an energy efficient air energy heat pump water heater unit comprising: the installation box is of a rectangular box body structure, the bottom end of the right side of the front wall surface of the installation box is provided with a heat dissipation port, the wall surface of the left side of the installation box is provided with an air inlet, the left end and the right end of the layered plate are respectively welded on the left side wall surface and the right side wall surface in the installation box, and a temperature and pressure increasing structure and a heat exchange storage structure are installed in the installation box;
the temperature-increasing and pressure-increasing structure comprises: the air conditioner comprises a first fan, an evaporator, a transfer pipe, an air compressor and a first pipeline;
the first fan is arranged on the upper wall surface of the layered plate and positioned on the right side of the air inlet, the evaporator is arranged on the upper wall surface of the layered plate and positioned on the right side of the first fan and connected with a first fan pipeline, the adapter pipe is arranged between the first fan and the evaporator, the air compressor is arranged on the upper wall surface of the layered plate and positioned on the right side of the evaporator, one end of the first pipeline is connected to the outlet end of the right side of the evaporator, and the other end of the first pipeline is connected to the inlet end of the air compressor;
the heat exchange storage structure comprises: the heat exchanger, the hot water tank, the second pipeline, the water pump, the storage tank, the third pipeline, the expansion valve, the second fan, the fourth pipeline, the water inlet pipe and the water outlet pipe;
the heat exchanger is arranged on the lower wall surface in the installation line pipe, the hot water tank is welded above the heat exchanger and is connected with a hot water outlet pipeline of the heat exchanger, one end of the second pipeline is connected with an outlet section of the air compressor, the other end of the second pipeline penetrates through the layered plate and is connected with an inlet end of the heat exchanger, the water pump is arranged on the lower wall surface in the installation line box and is positioned on the right side of the heat exchanger, the water outlet end of the water pump is connected with a cold water inlet pipeline of the heat exchanger, the accumulator tank is arranged on the lower wall surface in the installation line box and is positioned on the left side of the heat exchanger and is connected with a low-temperature and low-pressure outlet pipeline of the heat exchanger, one end of the third pipeline is connected with the left side of the accumulator tank, the other end of the third pipeline is connected with the left side of the, one end of the water inlet pipe is connected to the water inlet end of the water pump, the other end of the water inlet pipe is embedded in the right side wall of the installation box, one end of the water outlet pipe is connected to the hot water tank, and the other end of the water outlet pipe penetrates through the right side wall of the installation box.
Preferably, the heat exchanger is a double pipe heat exchanger.
Preferably, a display is embedded in the front wall surface of the installation box.
Preferably, the front wall surface of the installation box is embedded with a control panel and is positioned at the lower left of the display.
Preferably, the adapter tube is a three-way joint.
Preferably, a filter screen is embedded at the air inlet.
Preferably, a valve is arranged on the water outlet pipe.
Compared with the prior art, the beneficial effects of the utility model are that: according to the high-efficiency air energy heat pump hot water unit, low-temperature and low-pressure air is sucked through the first fan in a driving mode, enters the evaporator to be processed into high-temperature and low-pressure air, is processed and compressed through the air compressor to become high-temperature and high-pressure air required by equipment, flows through the heat exchanger to exchange heat with cold water pumped in through the water pump, so that the water temperature is increased, and enters the hot water tank to be stored for a certain amount; the high-temperature and high-pressure gas is changed into low-temperature and low-pressure gas, and the low-temperature and high-pressure gas enters the storage tank to be stored for cyclic utilization in a certain amount, so that energy consumption is saved; the evaporator is gasified by an expansion valve and then enters the evaporator to absorb heat, so that the evaporator is kept in a certain temperature range and is prevented from being damaged due to overhigh temperature; meanwhile, the heat emitted by the hot water tank is absorbed by the second fan and enters the compressor through the fourth pipeline, so that the consumption of the evaporator and the energy consumption of the air compressor can be reduced, and the evaporator and the air compressor are connected for recycling; the design has the advantages of high heat exchange efficiency and high heating speed, and the energy generated by the cyclic utilization equipment reduces the overall loss and saves a large amount of energy.
Drawings
FIG. 1 is a schematic sectional view of the front view of the present invention;
FIG. 2 is a schematic view of the appearance structure of the present invention;
fig. 3 is a left side view structure diagram of the present invention.
In the figure: 1. the installation box, 2, the layering board, 3, first fan, 4, the evaporimeter, 5, the switching pipe, 6, air compressor, 7, first pipeline, 8, the heat exchanger, 9, the hot-water tank, 10, the second pipeline, 11, the water pump, 12, the accumulator tank, 13, the third pipeline, 14, the expansion valve, 15, the second fan, 16, the fourth pipeline, 17, the inlet tube, 18, the outlet pipe, 19, the display, 20, control panel, 21, the filter screen, 22, the valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1-3, the present invention provides a technical solution: an energy efficient air energy heat pump water heater unit comprising: the installation box comprises an installation box 1 and a layered plate 2, wherein the installation box 1 is of a rectangular box body structure, the bottom end of the right side of the front wall surface of the installation box is provided with a heat dissipation port, the wall surface of the left side of the installation box is provided with an air inlet, the left end and the right end of the layered plate 2 are respectively welded on the left side wall surface and the right side wall surface in the installation box 1, and a temperature and pressure increasing structure and a heat exchange storage structure are installed; a warming and pressurizing structure comprising: the system comprises a first fan 3, an evaporator 4, a transfer pipe 5, an air compressor 6 and a first pipeline 7; the first fan 3 is arranged on the upper wall surface of the layered plate 2 and positioned at the right side of the air inlet, the evaporator 4 is arranged on the upper wall surface of the layered plate 2 and positioned at the right side of the first fan 3 and connected with the first fan 3 through a pipeline, the adapter tube 5 is arranged between the first fan 3 and the evaporator 4, the air compressor 6 is arranged on the upper wall surface of the layered plate 2 and positioned at the right side of the evaporator 4, one end of the first pipeline 7 is connected to the outlet end at the right side of the evaporator 4, and the other end of the first pipeline is connected to the inlet end of the air compressor 6; the temperature-raising and pressurizing structure can change the sucked air from low temperature and low pressure to high temperature and high pressure for subsequent heat transfer exchange; a heat exchange storage structure comprising: the system comprises a heat exchanger 8, a hot water tank 9, a second pipeline 10, a water pump 11, a storage tank 12, a third pipeline 13, an expansion valve 14, a second fan 15, a fourth pipeline 16, a water inlet pipe 17 and a water outlet pipe 18; the heat exchanger 8 is arranged on the lower wall surface in the installation line pipe, the hot water tank 9 is welded above the heat exchanger 8 and is connected with a hot water outlet pipeline of the heat exchanger 8, one end of a second pipeline 10 is connected with an outlet section of the air compressor 6, the other end of the second pipeline penetrates through the layered plate 2 and is connected with an inlet end of the heat exchanger 8, the water pump 11 is arranged on the lower wall surface in the installation box 1 and is positioned on the right side of the heat exchanger, the water outlet end of the second pipeline is connected with a cold water inlet pipeline of the heat exchanger 8, the accumulator 12 is arranged on the lower wall surface in the installation line box and is positioned on the left side of the heat exchanger 8 and is connected with a low-temperature low-pressure outlet pipeline of the heat exchanger 8, one end of a third pipeline 13 is connected with the left side of the accumulator 12, the other end of the third pipeline is connected with the left side of the evaporator 4, one end of the water inlet pipe 17 is connected to the water inlet end of the water pump 11, the other end of the water inlet pipe is embedded in the right side wall of the installation box 1, one end of the water outlet pipe 18 is connected to the hot water tank 9, and the other end of the water outlet pipe penetrates through the right side wall of the installation box 1; through the heat exchange storage structure, the cold-heat exchange can be realized, cold water absorbs heat and becomes warm, and a certain amount of medium-temperature low-pressure gas is stored.
The following electric devices have the following types and functions:
a water pump: the model is ISWHB65-160 horizontal water pump, which is controlled by an external operation system and can be driven to pump water and supply water.
An air compressor: an air compressor, model number tfp02B-6, controlled by an external operating system, can compress gas with high efficiency.
An evaporator: the stainless steel evaporator with the type FYX is controlled by an external operating system and can be driven to heat.
A heat exchanger: the tubular heat exchanger with the GLL model is controlled by an external operating system, and can exchange heat with high efficiency and low power.
A first fan: the centrifugal ventilation fans of models 4-72, controlled by an external operating system, can extract air vigorously.
A second fan: the fan with the model number of FP-108EX-S1-S is controlled by an external operating system and can be used for driving air draft.
Preferably, the heat exchanger 8 is a double pipe heat exchanger 8, and the heat exchange efficiency is high.
Preferably, a display 19 is embedded on the front wall of the installation box for displaying data such as temperature and air pressure.
Preferably, the front wall of the installation box is embedded with a control panel 20 and is positioned at the lower left of the display 19 for controlling the driving of the equipment.
As a preferred scheme, furthermore, the adapter tube 5 is a three-way joint for meeting the connection requirement.
Preferably, a filter screen 21 is embedded at the air inlet for filtering dust in the air.
Preferably, a valve 22 is further installed on the water outlet pipe 18 for controlling the opening and closing of the water outlet pipe 18.
The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.
Example (b): as can be seen from fig. 1-3 of the specification, firstly, after the device is powered on, the device is driven by the control panel 20 to control the driving of each component of the device, and is driven by the first fan 3 on the layered plate 2 to suck the low-temperature and low-pressure air filtered by the filter screen 21, so that the air enters the evaporator 4 through the adapter tube 5 to be processed into high-temperature and low-pressure air, and enters the air compressor 6 through the first pipeline 7, and is processed and compressed by the air compressor 6 to become the high-temperature and high-pressure air required by the device, and then enters the heat exchanger 8 through the second pipeline 10 to exchange heat with the cold water pumped into the heat exchanger 8 through the water inlet pipe 17 on the water pump 11 in the installation box 1, so that the water temperature is raised, and the cold water enters the hot water tank 9 to be; after heat exchange, the high-temperature and high-pressure gas is changed into low-temperature and low-pressure gas, and the low-temperature and low-pressure gas enters the accumulator tank 12 to be stored for the next use; the gas is gasified by an expansion valve 14 on a third pipeline 13 and then enters the evaporator 4 to absorb heat, so that the evaporator 4 is kept in a certain temperature range, and the damage caused by overhigh temperature is prevented; meanwhile, the heat emitted by the hot water tank 9 is absorbed by the second fan 15, and enters the compressor through the fourth pipeline 16 and the adapter tube 5, so that the consumption of the evaporator 4 and the energy consumption of the air compressor 6 can be reduced, the connection is a recycling connection, and data such as temperature, pressure and the like are displayed through the display 19; and the hot water is controlled to flow out of the water outlet pipe 18 through the switch of the valve 22.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation; also, unless otherwise expressly stated or limited, the terms "connected," "extending," "fitted," "welded," "plugged," and the like are to be construed broadly and can include, for example, a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An energy efficient air energy heat pump water heater unit comprising: the installation box comprises an installation box (1) and a layered plate (2), and is characterized in that the installation box (1) is of a rectangular box body structure, the bottom end of the right side of the front wall surface of the installation box is provided with a heat dissipation port, the wall surface of the left side of the installation box is provided with an air inlet, the left end and the right end of the layered plate (2) are respectively welded on the left side wall surface and the right side wall surface in the installation box (1), and a temperature and pressure increasing structure and a heat exchange storage structure are installed in the installation box (1);
the temperature-increasing and pressure-increasing structure comprises: the air conditioner comprises a first fan (3), an evaporator (4), a transfer pipe (5), an air compressor (6) and a first pipeline (7);
the first fan (3) is arranged on the upper wall surface of the layered plate (2) and located on the right side of the air inlet, the evaporator (4) is arranged on the upper wall surface of the layered plate (2) and located on the right side of the first fan (3) and connected with the first fan (3) through a pipeline, the adapter pipe (5) is arranged between the first fan (3) and the evaporator (4), the air compressor (6) is arranged on the upper wall surface of the layered plate (2) and located on the right side of the evaporator (4), one end of the first pipeline (7) is connected to the outlet end of the right side of the evaporator (4), and the other end of the first pipeline is connected to the inlet end of the air compressor (6);
the heat exchange storage structure comprises: the system comprises a heat exchanger (8), a hot water tank (9), a second pipeline (10), a water pump (11), a storage tank (12), a third pipeline (13), an expansion valve (14), a second fan (15), a fourth pipeline (16), a water inlet pipe (17) and a water outlet pipe (18);
the heat exchanger (8) is arranged on the inner lower wall surface of the installation pipeline, the hot water tank (9) is welded above the heat exchanger (8) and is connected with a hot water outlet pipeline of the heat exchanger (8), one end of the second pipeline (10) is connected with an outlet section of the air compressor (6), the other end of the second pipeline penetrates through the layered plate (2) and is connected with an inlet end of the heat exchanger (8), the water pump (11) is arranged on the inner lower wall surface of the installation pipeline (1) and is positioned on the right side of the heat exchanger, the water outlet end of the water pump is connected with a cold water inlet pipeline of the heat exchanger (8), the storage tank (12) is arranged on the inner lower wall surface of the installation pipeline and is positioned on the left side of the heat exchanger (8) and is connected with a low-temperature and low-pressure outlet pipeline of the heat exchanger (8), one end of the third pipeline (13) is connected to the left side of the storage tank (12, the second fan (15) is arranged on the hot water tank (9), one end of the fourth pipeline (16) is connected to the second fan (15), the other end of the fourth pipeline is connected to the bottom end of the switching pipe (5), one end of the water inlet pipe (17) is connected to the water inlet end of the water pump (11), the other end of the water inlet pipe is embedded into the right side wall of the installation box (1), one end of the water outlet pipe (18) is connected to the hot water tank (9), and the other end of the water outlet pipe penetrates through the right side wall of the installation box (1).
2. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: the heat exchanger (8) is a double-pipe heat exchanger (8).
3. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: and a display (19) is embedded in the front wall surface of the installation box (1).
4. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: the front wall surface of the installation box (1) is embedded with a control panel (20) and is positioned at the lower left of the display (19).
5. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: the adapter tube (5) is a three-way joint.
6. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: a filter screen (21) is embedded at the air inlet.
7. The high efficiency air energy heat pump hot water unit as claimed in claim 1, wherein: and a valve (22) is arranged on the water outlet pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133034.2U CN211451395U (en) | 2019-07-18 | 2019-07-18 | High-effect air energy heat pump hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133034.2U CN211451395U (en) | 2019-07-18 | 2019-07-18 | High-effect air energy heat pump hot water unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211451395U true CN211451395U (en) | 2020-09-08 |
Family
ID=72311505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921133034.2U Expired - Fee Related CN211451395U (en) | 2019-07-18 | 2019-07-18 | High-effect air energy heat pump hot water unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211451395U (en) |
-
2019
- 2019-07-18 CN CN201921133034.2U patent/CN211451395U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201909441U (en) | Wall-mounted air source heat pump water heater | |
| CN103062858A (en) | Air-conditioning system for recovering kitchen heat energy | |
| CN103542614B (en) | heating and refrigerating system | |
| CN202008184U (en) | Instant electric heating type solar heat supply system | |
| CN100513933C (en) | Dual-purpose machine for hot water and air conditioning | |
| CN202209814U (en) | Solar energy auxiliary heating ground source air-conditioning hot water integrated machine | |
| CN204240466U (en) | A kind of special air source heat pumps energy-saving unit hot-water supply device | |
| CN203478692U (en) | Total heat recovery household multi-split air-conditioner system | |
| CN210089036U (en) | Solar auxiliary heating, refrigeration and hot water supply triple heat supply pump system | |
| CN201138100Y (en) | Central air-conditioner integrating earth warming, and hot water preparing | |
| CN204612232U (en) | A kind of domestic solar heat pump heating and refrigerating system | |
| CN204026891U (en) | Recuperation of heat ladder-elevating temperature and water inflow control system | |
| CN211451395U (en) | High-effect air energy heat pump hot water unit | |
| CN102168869A (en) | Electric instant heating type solar heat supply heating system | |
| CN202008190U (en) | Heating system complementarily using solar energy, air source and electric energy | |
| CN102914082B (en) | Air conditioner and solar water heater integrated device for summer | |
| CN202008187U (en) | Heating system complementarily using solar energy, air source and fuel gas | |
| CN205156207U (en) | Novel energy -conserving air conditioner of low ebb electricity | |
| CN211316534U (en) | Water heating system utilizing solar energy and air energy | |
| CN204854070U (en) | Air -source heat pump trigeminy supplies unit | |
| CN200986311Y (en) | Double system air conditioner heat pump water heater | |
| CN208794726U (en) | It is a kind of based on solar powered air energy thermal pump installation | |
| CN203163145U (en) | Auxiliary solar comprehensive heating and air-conditioning system with air source heat pump | |
| CN200989640Y (en) | Solar air conditioner | |
| CN201273743Y (en) | Air-conditioning and water-heating bi-purpose machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 |