CN210292073U - Air conditioner with external main body - Google Patents
Air conditioner with external main body Download PDFInfo
- Publication number
- CN210292073U CN210292073U CN201920927809.7U CN201920927809U CN210292073U CN 210292073 U CN210292073 U CN 210292073U CN 201920927809 U CN201920927809 U CN 201920927809U CN 210292073 U CN210292073 U CN 210292073U
- Authority
- CN
- China
- Prior art keywords
- air
- channel
- reheating
- air conditioner
- end device
- 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.)
- Active
Links
Images
Landscapes
- Central Air Conditioning (AREA)
Abstract
The utility model discloses an external air conditioner of main part, including installing at outdoor main part, installing at indoor air end device and the air connection passageway of connecting main part and air end device, the external air conditioner of main part contains two major systems: an air handling system and a refrigeration system; the refrigeration system is integrally arranged in the main body and provides cold or heat for the air treatment system through the evaporator; the refrigerating system is in a single refrigerating form or a heat pump form; the air treatment system consists of an air treatment chamber, an air end device, an air connecting channel and a device in the three parts, wherein the air treatment chamber and the air end device are arranged in the main body; the utility model has the advantages of simple structure and reasonable design, the security performance is high, and lower to the installation, move the technical requirement of machine, has effectively avoided producing because installer's the low condition that leads to dangerous refrigerant to leak of technical merit.
Description
Technical Field
The utility model relates to an air conditioner, specific external air conditioner of main part that says so.
Background
The refrigerant working medium commonly used in domestic and domestic air conditioners at present is HCFCs substance R22, but the refrigerant working medium must be replaced by a novel working medium due to the damage effect of the refrigerant on the ozone layer. Among various alternative refrigerant working media, propane (R290) is considered as a more potential alternative working medium, but R290 has the characteristics of flammability and explosiveness, and the explosion limit is 2.1% -9.5%; meanwhile, the existing household air conditioner is a cabinet type, wall-mounted or multi-connected VRV air conditioner, and adopts a split structure, namely an evaporator which is one of four major components of a refrigerating system is arranged in an indoor machine, and other parts are arranged in an outdoor machine, so that no matter the air conditioner is arranged or the indoor machine and pipelines are not tight, refrigerant R290 can be leaked indoors, and the danger of explosion can be caused.
In recent years, the safety research of the R290 small-sized room air conditioner mostly focuses on the aspects of solving leakage, strengthening monitoring control, reducing the filling amount of a refrigerating system R290, changing the operation process of equipment installation and maintenance and the like, and the aspects do not depart from the system structure form of the existing split air conditioner, so that the popularization of the split household air conditioner of the environment-friendly working medium R290 is enabled to face the investment of a large amount of manpower, material resources and financial resources due to large potential safety hazards and high-standard operation technical requirements.
The integral air conditioner has long been used in industry, such as large air treating equipment called roof air conditioner set, its refrigerating system adopts air cooling type, and is made into compression condensing section, and formed into one body with its air treating function section, and the whole machine only needs to provide power supply for equipment.
The typical small-sized integrated air conditioner is a traditional window type air conditioner, which integrates a refrigerating system and an air processing system and is arranged in a reserved hole below a windowsill. The split type air conditioner is gradually replaced by the split type air conditioner because the hole needs to be reserved according to the cross section size of the air conditioner, the reserved hole is large in size, and the indoor influence caused by the operation noise is large.
The movable air conditioner is also a small integral air conditioner which is applied more recently, and also completely integrates a refrigerating system and an air treatment system, the whole air conditioner does not need to be installed, the universal wheels are arranged at the lower part of the air conditioner, the air conditioner can be moved randomly, can be used by plugging a power supply, and is mainly used in occasions needing temporary local cooling; when the whole temperature in the room is required to be reduced, the flexible pipe is connected from the condensation side and is led to the outside through a window.
There are also small integral refrigeration devices, such as heat pump dryers, household air blowers with refrigeration systems, etc., so that the integral air conditioner is a mature prior art and only differs in specific application scenarios.
Patent CN207751102U discloses an integrated air conditioner, which is used in the occasions where the split air conditioner is not easy to install; patent CN108800330A discloses an integrated air conditioner, which adopts a specific implementation form of an up-and-down structure; patent CN108571782A discloses an integrated air conditioner for solving the problem of cooling of servers, and the like, all of which adopt the technology of integrated air conditioner, but the technology of these patents does not achieve the ideal effect in the application of household air conditioners.
Neither split type air conditioners nor integrated type air conditioners, including the above-mentioned patents, currently use the heat of the condensing side for reheating of cooling dehumidification. Although small air conditioners have a dehumidification function, such dehumidification is either at the cost of a continuous drop in temperature of the room, or incomplete, and is very energy-inefficient if compensated for by electrical heating.
Disclosure of Invention
In order to solve the problem, the utility model provides a security performance is high, and lower to the installation, move the technical requirement of machine, has effectively avoided because installer's the low external air conditioner of main part that leads to the condition production that dangerous refrigerant leaks of technical merit.
In order to achieve the purpose, the utility model discloses a realize through following technical scheme:
the utility model discloses an external air conditioner of main part, including installing at outdoor main part, installing at indoor air end device and the air connection passageway of connecting main part and air end device, external air conditioner of main part contains two major systems: an air handling system and a refrigeration system;
the refrigeration system is integrally arranged in the main body and provides cold or heat for the air treatment system through the evaporator; the refrigerating system is in a single refrigerating form or a heat pump form;
the air treatment system consists of an air treatment chamber, an air end device, an air connecting channel and a device in the three parts, wherein the air treatment chamber and the air end device are arranged in the main body;
the fan in the air handling system is mounted in an air handling compartment or air terminal or air connection channel.
The utility model discloses a further technological improvement lies in: the air treatment system also comprises a reheating heat exchanger, the reheating heat exchanger is arranged in the air treatment chamber, outdoor air is arranged on one side of the reheating heat exchanger, air to be treated is arranged on the other side of the reheating heat exchanger, and the reheating heat exchanger is used for transferring heat of the outdoor air to the air to be treated and meeting the reheating requirement of the treated air during dehumidification operation.
The utility model discloses a further technological improvement lies in: the air treatment system also comprises a reheating condenser which is arranged in the air treatment chamber and is used for meeting the reheating requirement of the treatment air during the dehumidification operation, and the reheating condenser is a part or a branch of the condenser of the refrigeration system.
The utility model discloses a further technological improvement lies in: the air treatment system also comprises a reheating condenser and a reheating heat exchanger, wherein the reheating condenser and the reheating heat exchanger are arranged in the air treatment chamber and are used for meeting the reheating requirement of the treatment air during dehumidification operation, and the reheating condenser is a part or a branch of a condenser of the refrigeration system.
The utility model discloses a further technological improvement lies in: the air processing chamber is provided with one or two of an exhaust channel outside or a fresh air channel from outside to inside.
The utility model discloses a further technological improvement lies in: under the condition that fresh air enters from the fresh air channel and exhaust air is discharged from the exhaust air channel, the energy exchange of the fresh air and the exhaust air is carried out through the heat recovery device.
The utility model discloses a further technological improvement lies in: the air treatment system also comprises one or two of an electric heater and a filtering and dust removing device, and the electric heater and the filtering and dust removing device are arranged in the air treatment chamber or the air end device or the air connecting channel.
The utility model discloses a further technological improvement lies in: the air end device is provided with an air supply outlet and an air return inlet, and is divided into an integral type in which the air supply outlet and the air return inlet are arranged together or a split type in which the air supply outlet and the air return inlet are arranged separately.
The utility model discloses a further technological improvement lies in: the air connecting channel comprises an air supply channel and an air return channel, and the air connecting channel is an integral type in which the air supply channel and the air return channel are tightly attached to each other or a split type in which the air supply channel and the air return channel are independently installed.
The utility model has the advantages that: the problems of installation and machine moving operation of dangerous refrigerant air conditioners such as an R290 air conditioner are fundamentally solved. Because the refrigerating system is completely assembled in the air conditioner with the external main body, the installation and machine moving operation of the air conditioner are irrelevant to the refrigerating system, namely the refrigerating system, so that the potential safety hazard caused by dangerous refrigerating agents in the installation process is fundamentally avoided; on the other hand, the technical difficulty of installation and moving operation is greatly reduced, and the air conditioner installation only needs to be in place and fixed.
The refrigerant charge is reduced. Because the refrigerating system is completely arranged in the outdoor unit, the refrigerating capacity filling amount in connecting pipelines of the indoor unit and the outdoor unit of the traditional split air conditioner is saved, and a solution with remarkable effect is provided for solving the problem of how to reduce the filling amount of dangerous refrigerants.
① because the refrigeration system is completely assembled in the outdoor unit, the sealing problem of the system can be completely guaranteed by the production line and is not influenced by the installation, which effectively reduces the possibility of refrigerant leakage, ② should there be a leakage on the evaporator side, the dangerous refrigerant can be easily detected in the indoor chamber for the first time.
A fixed compact refrigeration system ensures refrigeration efficiency and lower failure rates. The refrigerating system is not influenced by the uncertainty of the installation position of the evaporator and the problem of installation quality, and the fixed system structure can realize the optimized design and manufacturing process in a factory.
The powerful dehumidification function of low energy consumption of the household air conditioner is realized. Because the air treatment system is partially arranged externally, on one hand, the heat utilization of the condensation side is possible while refrigerating and dehumidifying; on the other hand, the heat utilization of outdoor air is possible while refrigerating and dehumidifying, so that reheating without extra energy is realized, the cooling of refrigerating and dehumidifying is compensated, and the powerful dehumidifying function of the household air conditioner is realized.
The functions of air exhaust, fresh air and heat recovery of the household air conditioner are realized. Because the air treatment system is partially arranged, the air exhaust and the fresh air of the air conditioner are realized, and the heat recovery between the fresh air exhaust is also realized.
The air connecting channel of the air conditioner with the external main body is larger than the air conditioning hole of the traditional split air conditioner, but the implementation is also convenient and easy, wherein ① is more convenient and easier for a 20m air conditioner2The air-conditioned room of (2), the air volume of which is about 300m3H, the total passage of the return air is about 0.12m2② for the concrete wall not easy to open holes, it can be realized by using nearby external window brightness to reform the external window properly, and then connecting with the main external air conditioner by short air pipe.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Wherein: 1-air end device, 2-air connecting channel, 3-main body, 4-air processing system, 5-refrigerating system, 6-air processing chamber, 7-reheating heat exchanger, 8-air exhausting channel, 9-fresh air channel, 10-heat recovery device, 11-reheating condenser, 12-evaporator, 13-air supply channel, 14-air return channel, 15-electric heater, 16-fan, 17 filtering dust-removing device, 18-air return inlet and 19-air supply inlet.
Detailed Description
In order to enhance the understanding of the present invention, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, wherein the embodiments are only used for explaining the present invention, and do not limit the protection scope of the present invention.
As shown in fig. 1-3, the utility model relates to an external air conditioner of main part, its characterized in that: the air conditioner comprises a main body 3 arranged outdoors, an air terminal device 1 arranged indoors and an air connecting channel 2 connecting the main body 3 and the air terminal device 1, wherein the main body external air conditioner comprises two systems: an air handling system 4 and a refrigeration system 5;
the refrigerating system 5 is integrally arranged in the main body 3, and the refrigerating system 5 provides cold or heat for the air processing system 4 through the evaporator 12; the refrigerating system 5 is in a single refrigerating form or a heat pump form; the refrigeration system 5 is a complete refrigeration system that includes all of the equipment and piping of the refrigeration system.
The air treatment system 4 consists of an air treatment chamber 6 mounted in the main body 3, an air terminal device 1 and three major parts of an air connecting channel 2 connecting them and devices in the three parts;
the fan 16 in the air treatment system 4 is installed in the air treatment chamber 6 or in the air terminal device 1 or in the air connection channel 2.
Wherein the air treatment system 4 comprises, in addition to the prior art devices, either or both of a reheat heat exchanger 7 and a condenser 12, wherein the reheat heat exchanger 7 is disposed in the air treatment chamber 6, and one side of the reheat heat exchanger 7 is outdoor air and the other side is air to be treated, and functions to transfer heat from the outdoor air to the air to be treated for meeting the reheating requirement of the treated air during dehumidification operation, and wherein the reheat condenser 11 is disposed in the air treatment chamber 6 for meeting the reheating requirement of the treated air during dehumidification operation, and the reheat condenser 11 is a part or a branch of the condenser of the refrigeration system 5.
In addition, the air treatment system can also be provided with one or more of an electric heater 15, a filtering and dedusting device 17, a degerming device and a humidifier. The air treatment system can also be added with a silencing device, a dust and bacteria removing device, an ozone generating device, a harmful volatile matter absorbing device, a negative ion generating device, a monitoring and sensing device and other devices for improving the air quality according to the requirements, and the installation positions of the devices are optional and can be installed in the air treatment chamber 6, the air connecting channel 2 or the air end device 1.
When the air treatment chamber 6 of the air conditioner with the external main body is provided with the fresh air channel 9 and the exhaust air channel 9, a heat recovery device 10 can be arranged in the air conditioner with the external main body so that the fresh air and the exhaust air can exchange energy through the heat recovery device 10.
The air connecting channel 2 comprises an air supply channel 13 and a return air channel 14, the air connecting channel 2 is divided into an integrated type in which the air supply channel 13 and the return air channel 14 are tightly attached or a split type in which the air supply channel 13 and the return air channel 14 are independently installed, the air end device 1 is provided with an air supply opening 19 and a return air opening 18, the air end device 1 is divided into an integrated type in which the air supply opening 19 and the return air opening 18 are installed together or a split type in which the air supply opening 19 and the return air opening 18 are separately installed, besides, a user can select to only arrange the air end device 1 provided with one of the air supply opening 19 or the return air opening 19 according to actual needs.
The fan 16 is used as a power source for air delivery in the air treatment system 4, the form of the fan 16 can be determined according to the air volume and pressure loss of the air conditioner with the main body arranged externally, and a cross-flow fan, an oblique-flow fan or a centrifugal fan and the like can be selected.
Example 1
The air treatment system 4 of the air conditioner with the external main body is provided with a reheating heat exchanger 7, a heat recovery device 10, a reheating condenser 11, an electric heater 15, a fan 16 and a filtering and dust removing device 17.
The refrigeration system of the air conditioner with the external main body is of a single refrigeration type, a partial condenser and a condenser 11 for reheating are adopted as reheating equipment in a dehumidification mode, a fresh air channel 9 and an exhaust air channel 8 are arranged on an air processing chamber 6, and a heat recovery device 10 is used for carrying out energy conversion on fresh air entering from the fresh air channel 9 and exhaust air discharged from the exhaust air channel 8 so as to realize energy recovery.
The air connecting channel 2 is divided into an integrated air supply channel 13 and an air return channel 14 which are tightly attached, and the air end device 1 is divided into an integrated air supply outlet 19 and an air return inlet 18 which are installed together. The electric heater 15 is provided in the air blowing passage 13 of the air connecting passage 2. The filter dust removing device 17 is arranged in the air terminal device 1 with the return air opening 18. A fan 16 is arranged in the air terminal device 1.
Example 2
The air treatment system 4 of the air conditioner with the external main body is provided with a reheating heat exchanger 7, an electric heater 15, a fan 16 and a filtering and dedusting device 17.
The refrigeration system of the air conditioner with the external main body is of a heat pump type, a reheating heat exchanger 7 is adopted as reheating equipment in a dehumidification mode, a fresh air channel 9 and an exhaust channel 8 are arranged on an air treatment chamber 6, an air connecting channel 2 is divided into an integrated type that an air supply channel 13 and an air return channel 14 are tightly attached, and an air end device 1 is divided into an integrated type that an air supply opening 19 and an air return opening 18 are installed together. The electric heater 15 is provided in the air blowing passage 13 of the air connecting passage 2. The filter dust removing device 17 is arranged in the air terminal device 1 with the return air opening 18. The fan 16 is disposed within the main body 3.
Example 3
The air processing system 4 of the air conditioner with the external main body is provided with an electric heater 15, a fan 16 and a filtering and dedusting device 17.
The refrigeration system of the air conditioner with the external main body is of a heat pump type, and the electric heater 15 is installed in the air processing chamber 6.
The air end device 1 is a split type air supply outlet 19 and an air return inlet 18 which are separately arranged, the air connecting channel 2 is a split type air supply channel 13 and an air return channel 14 which are separately arranged, and the air connecting channel 2 is longer and can be a hard pipe or a hose.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The external air conditioner of main part, its characterized in that: including installing in outdoor main part (3), installing in indoor air end device (1) and connecting main part (3) with air end device's (1) air connection passageway (2), the external air conditioner of main part contains two major systems: an air handling system (4) and a refrigeration system (5);
the refrigerating system (5) is integrally arranged in the main body (3), and the refrigerating system (5) provides cold or heat for the air treatment system (4) through an evaporator (12); the refrigerating system (5) is in a single refrigerating form or a heat pump form;
the air treatment system (4) consists of an air treatment chamber (6) mounted in the main body (3), the air terminal device (1) and the three major parts of the air connection channel (2) connecting them and the devices in these three parts;
the fan (16) in the air treatment system (4) is mounted in the air treatment chamber (6) or in the air terminal device (1) or in the air connection channel (2).
2. The external air conditioner of claim 1, wherein: the air treatment system (4) further comprises a reheating heat exchanger (7), the reheating heat exchanger (7) is arranged in the air treatment chamber (6), one side of the reheating heat exchanger (7) is outdoor air, the other side of the reheating heat exchanger is air to be treated, and the reheating heat exchanger is used for transferring heat of the outdoor air to the air to be treated so as to meet the reheating requirement of the treated air in dehumidification operation.
3. The external air conditioner of claim 1, wherein: the air treatment system (4) further comprises a condenser (11) for reheating, the condenser (11) for reheating is arranged in the air treatment chamber (6) and is used for meeting the reheating requirement of the treatment air during the dehumidification operation, and the condenser (11) for reheating is a part of or a branch of the condenser of the refrigeration system (5).
4. The external air conditioner of claim 1, wherein: the air treatment system (4) further comprises a reheating condenser (11) and a reheating heat exchanger (7), wherein the reheating condenser (11) and the reheating heat exchanger (7) are arranged in the air treatment chamber (6) and are used for meeting the reheating requirement of the treated air during dehumidification operation, and the reheating condenser (11) is a part or a branch of the condenser of the refrigeration system (5).
5. The external air conditioner of claim 1, wherein: the air treatment chamber (6) is provided with one or two of an exhaust channel (8) towards the outside or a fresh air channel (9) from the outside to the inside.
6. The external air conditioner of claim 1, wherein: under the condition that fresh air enters from the fresh air channel (9) and exhaust air is discharged from the exhaust air channel (8), the energy exchange is carried out on the fresh air and the exhaust air through the heat recovery device (10).
7. The external air conditioner of any of claims 1-6, wherein: the air treatment system (4) further comprises one or two of an electric heater (15) and a filtering and dust removing device (17), and the electric heater (15) and the filtering and dust removing device (17) are installed in the air treatment chamber (6) or the air end device (1) or the air connecting channel (2).
8. The external air conditioner of claim 7, wherein: the air end device (1) is provided with an air supply outlet (19) and an air return inlet (18), and the air end device (1) is divided into an integral type in which the air supply outlet (19) and the air return inlet (18) are installed together or a split type in which the air supply outlet (19) and the air return inlet (18) are installed separately.
9. The external air conditioner of claim 8, wherein: the air connecting channel (2) comprises an air supply channel (13) and an air return channel (14), and the air connecting channel (2) is divided into an integral type in which the air supply channel (13) and the air return channel (14) are closely attached or a split type in which the air supply channel (13) and the air return channel (14) are independently installed.
10. The external air conditioner of claim 1, wherein: the air connecting channel (2) comprises an air supply channel (13) and an air return channel (14), the air connecting channel (2) is divided into an integrated type in which the air supply channel (13) and the air return channel (14) are tightly attached to each other or a split type in which the air supply channel (13) and the air return channel (14) are independently installed, an air supply opening (19) and an air return opening (18) are installed on the air end device (1), and the air end device (1) is divided into an integrated type in which the air supply opening (19) and the air return opening (18) are installed together or a split type in which the air supply opening (19) and the air return opening (18) are separately installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927809.7U CN210292073U (en) | 2019-06-20 | 2019-06-20 | Air conditioner with external main body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927809.7U CN210292073U (en) | 2019-06-20 | 2019-06-20 | Air conditioner with external main body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210292073U true CN210292073U (en) | 2020-04-10 |
Family
ID=70097870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920927809.7U Active CN210292073U (en) | 2019-06-20 | 2019-06-20 | Air conditioner with external main body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210292073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500648A (en) * | 2019-06-20 | 2019-11-26 | 常州工程职业技术学院 | Main body external air-conditioning |
-
2019
- 2019-06-20 CN CN201920927809.7U patent/CN210292073U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500648A (en) * | 2019-06-20 | 2019-11-26 | 常州工程职业技术学院 | Main body external air-conditioning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103912947B (en) | For fan coil and the heat pump of heat recovery fresh air conditioning group | |
| CN205332392U (en) | Computer room air conditioner | |
| CN103512092A (en) | Air-conditioning unit for ultralow-energy-consumption house | |
| CN101995067B (en) | Air conditioning system combined by indirect evaporation chiller plant and traditional mechanical refrigerating unit | |
| CN201892273U (en) | Split type energy-saving air conditioner | |
| CN210292073U (en) | Air conditioner with external main body | |
| CN107120757A (en) | It is a kind of to be combined the heat recovery type fresh air conditioner group constituted by three refrigerant circulations | |
| CN103727606A (en) | Rotary wheel dehumidification system with vortex tube for performing cooling and regenerating and air processing method for rotary wheel dehumidification system | |
| CN102022788A (en) | Combined cooling air-conditioning system of indirect evaporation chiller and mechanical refrigeration chiller | |
| CN103512093A (en) | Air-conditioning unit with independent dehumidification function for ultralow-energy-consumption house | |
| CN203550043U (en) | Air-conditioning unit for residence | |
| CN201548000U (en) | Wet curtain air source air conditioning unit | |
| CN106871395A (en) | A kind of pair of double low-temperature receiver heat recovery fresh air units of plate | |
| CN110500648A (en) | Main body external air-conditioning | |
| CN201285185Y (en) | Heat pump combination type air-conditioner | |
| CN206669914U (en) | A kind of integral type subway air-conditioner set | |
| CN203036900U (en) | Heat pump dehumidifier | |
| CN201527040U (en) | Outdoor machine of split-type air-conditioning | |
| CN213841172U (en) | Water-cooled ground source humidifying fresh air handling unit | |
| CN203349390U (en) | Split movable air conditioner | |
| CN205026868U (en) | Full heat exchanger of static pressure | |
| CN211011666U (en) | Waste heat recovery type high air supply temperature fresh air dehumidification unit | |
| CN203518021U (en) | Ultralow-energy residential air conditioning unit with independent dehumidification function | |
| CN203083044U (en) | Double-cold-resource fresh air handling unit | |
| CN202973804U (en) | Heat recovery type heat pump high-temperature hot wind dryer and heat pump unit applied to the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |