CN218645679U - House five constant systems based on heat supply and cold supply and fresh air replacement basis - Google Patents
House five constant systems based on heat supply and cold supply and fresh air replacement basis Download PDFInfo
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- CN218645679U CN218645679U CN202222644841.9U CN202222644841U CN218645679U CN 218645679 U CN218645679 U CN 218645679U CN 202222644841 U CN202222644841 U CN 202222644841U CN 218645679 U CN218645679 U CN 218645679U
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Abstract
The utility model relates to a five permanent systems of house based on heat supply and cold supply and replacement new trend are on the basis belongs to air conditioning system technical field. The residential fifth constant system based on heat supply, cold supply and fresh air replacement comprises a ceiling radiation heating and refrigerating system and a fresh air return air supply heating and refrigerating system; fresh air is sent back wind heating refrigerating system and is encircleed the setting of new trend family, ceiling radiation heating refrigerating system sets up in the concrete floor of new trend family. The utility model discloses a cold and hot source form that multipotency is complementary provides the cooling heat supply, accomplishes "constant temperature, constant humidity, constant oxygen, it is permanent quiet, permanent clean" in the true sense, solved among the prior art air conditioning system and only can guarantee in winter heat supply, summer cooling, winter and summer two seasons satisfy people to the comfortable demand of indoor environment heat, it is very inconvenient to the temperature regulation in excessive season, be difficult to the problem of temperature control at human comfortable within range all the time.
Description
Technical Field
The utility model belongs to the technical field of air conditioning system, specific theory relates to a five permanent systems of house based on heat supply and cooling and on replacement new trend basis.
Background
In recent years, with the continuous improvement of the living standard of people, people have higher and higher requirements for keeping the indoor environment comfortable, and then the consumption on an air conditioner is also higher and higher, and the air conditioner mainly comprises four major parts, namely a refrigeration system, a water pump, a fan and a pipeline system. Air conditioning systems on the market at the present stage are various and difficult to compare, but a novel 'five constant system' is unique in innovation, and can ensure that the indoor environment reaches 'five constant', namely: constant temperature, constant humidity, constant oxygen, constant static and constant cleanness are realized by an enclosure structure, ceiling radiation, sound insulation treatment, a fresh air system, a replacement ventilation system and the like. The air conditioning system on the market at present can only guarantee to supply heat in winter, summer cooling, and winter and summer two seasons satisfy people's demand for the heat comfort of indoor environment, and it is very inconvenient to the temperature control in excessive season, is difficult to be controlled the temperature all the time in human comfortable within range.
Therefore, it is necessary to provide a residential fifth-constant system based on heat and cold supply and fresh air replacement, and solve the problems that an air conditioning system in the prior art can only ensure heat supply in winter and cold supply in summer, and can meet the heat and comfort requirements of people for indoor environment in winter and summer, the temperature regulation in transition seasons is very inconvenient, and the temperature is difficult to be controlled within the human body comfort range all the time.
SUMMERY OF THE UTILITY MODEL
In order to overcome the air conditioning system on the market at present that exists among the background art and only can guarantee to supply heat in winter, summer cooling, satisfy people to the comfortable demand of indoor environment heat winter and summer two seasons, it is very inconvenient to the temperature regulation in excessive season, is difficult to the problem of controlling the temperature at the comfortable within range of human body all the time, the utility model provides a five permanent systems of house on the basis of heat supply cooling and replacement new trend provide the cooling heat supply with the complementary cold and heat source form of multipotency, accomplish "constant temperature, constant humidity, constant oxygen, permanent calmness, permanent cleanness" in the true sense.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model provides a residential five-constant system based on heat and cold supply and fresh air replacement, which comprises a ceiling radiation heating and refrigerating system and a fresh air return air supply heating and refrigerating system; fresh air is sent back wind heating refrigerating system and is encircleed the setting of new trend family, ceiling radiation heating refrigerating system sets up in the concrete floor 1 of new trend family.
The fresh air returning and air heating and refrigerating system comprises a fresh air pipe 2, an air feeder 3, a heat exchange device 4, a fresh air shaft 5, a pure fresh air pipeline 6, an air exhaust shaft 7 and an exhaust pipe 8, wherein the fresh air pipe 2 is provided with the air feeder 3 and is communicated with the upper end of the fresh air shaft 5, the lower end of the fresh air shaft 5 is communicated with the pure fresh air pipeline 6, the pure fresh air pipeline 6 is arranged in a fresh air house floor, a fresh air port 9 communicated with the fresh air house is formed in the pure fresh air pipeline 6, the outlet of the fresh air port 9 is connected with a fresh air branch pipe, the exhaust shaft 7 is provided with a dirty air outlet 10 communicated with the fresh air house and is communicated with the exhaust pipe 8, and the air outlet end of the exhaust pipe 8 is connected with the air inlet end of the fresh air pipe 2 through the heat exchange device 4.
The ceiling radiation heating and refrigerating system is characterized in that a strong and weak electric pipe 11, bottom reinforcing steel bars 12 and a five-constant radiation plastic pipe 13 are arranged in a concrete floor slab 1, the five-constant radiation plastic pipe 13 is uniformly laid in the concrete floor slab 1, the bottom reinforcing steel bars 12 are laid on the lower side of the concrete floor slab in a criss-cross mode, the strong and weak electric pipe 11 is arranged on the upper side of the five-constant radiation plastic pipe 13, the five-constant radiation plastic pipe 13 comprises a water supply pipe 14, a water return pipe 15 and a condensate water pipe 16, and the water supply pipe 14, the water return pipe 15 and the condensate water pipe 16 are respectively communicated with a heat exchange device 4.
Preferably, the heat exchange device 4 comprises a fresh air static pressure box 17, a pressure difference switch 18, a filter screen 19, a cold and hot water coil pipe 20, a sound attenuation layer 21, an air supply static pressure box 22, a temperature and humidity sensor 23 and a heat exchange device box 24, wherein the fresh air static pressure box 17 is arranged at the right end of the heat exchange device box 24, the fresh air static pressure box 17 is communicated with an air outlet of the exhaust pipe 8 and an air inlet of the fresh air pipe 2, a water supply pipe 14, a water return pipe 15 and a condensate pipe 16 are communicated with the cold and hot water coil pipe 20 at the inner side of the heat exchange device box 24, the pressure difference switch 18 is arranged on the heat exchange device box 24, the filter screen 19 is arranged at the right side of an inner cavity of the heat exchange device box 24, the air feeder 3 is arranged at the left side of the inner cavity of the heat exchange device box 24, the sound attenuation layer 21 is arranged at the outer side of the heat exchange device box 24, the temperature and humidity sensor 23 is also arranged in the heat exchange device box 24, and the left side of the air supply static pressure box 22 is communicated with an air outlet end of the fresh air pipe 2 and communicated with the fresh air shaft 5.
Preferably, the dirty air outlet 10 is provided at an upper position in the fresh air room.
Preferably, the pure fresh air pipeline 6 adopts De75HDPE double-wall corrugated pipe.
Preferably, the ground of the De75HDPE double-wall corrugated pipe can be 80mm, and the air supply quantity of each fresh air branch pipe is 30m 3 H, tuyere types are two: FK-130m 3 /h、FK-260m 3 /h。
Preferably, the pure fresh air pipeline 6 adopts a 130X30UPVC plastic pipe.
Preferably, the 130X30UPVC plastic pipe is arranged on the ground, the ground can be made to be 50mm, and the air supply quantity of each fresh air branch pipe is 30m 3 The tuyere types are two: FK-130m 3 /h；FK-260m 3 /h。
Preferably, the ceiling radiation heating and refrigerating system adopted at the manifold of the water collector and the water collector is also provided with an insulating layer 25 below the concrete floor slab 1.
The utility model has the advantages that:
the utility model discloses a cold and hot source form that multipotency is complementary provides the cooling heat supply, accomplishes "constant temperature, constant humidity, permanent oxygen, it is permanent quiet, permanent clean" in the real sense, solved among the prior art air conditioning system and can only guarantee heat supply in winter, summer cooling, winter and summer satisfy people to the comfortable demand of indoor environment heat in two seasons, it is very inconvenient to the temperature regulation in excessive season, be difficult to the problem of temperature control at human comfortable within range all the time.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the arrangement structure of the pure fresh air pipeline of the present invention;
FIG. 3 is a front view of the fresh air inlet of the present invention;
fig. 4 is a side view of the fresh air port of the present invention;
fig. 5 is a layout diagram of the ceiling radiation heating and cooling system of the house type functional room of the present invention;
fig. 6 is a layout diagram of the ceiling radiation heating and cooling system at the manifold of the water distributor and collector of the utility model;
fig. 7 is a schematic structural view of the heat exchange device of the present invention.
In the figure, 1-concrete floor, 2-fresh air pipe, 3-blower, 4-heat exchanger, 5-fresh air shaft, 6-pure fresh air pipeline, 7-air exhaust shaft, 8-air exhaust pipe, 9-fresh air port, 10-foul air outlet, 11-strong and weak electricity pipe, 12-bottom steel bar, 13-five constant radiation plastic pipe, 14-water supply pipe, 15-water return pipe, 16-condensate pipe, 17-fresh air static pressure box, 18-pressure difference switch, 19-filter screen, 20-cold and hot water coil pipe, 21-sound deadening layer, 22-air supply static pressure box, 23-temperature and humidity sensor, 24-heat exchanger box body and 25-heat preservation layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.
As shown in fig. 1-7, the residential five-constant system based on heating, cooling and fresh air replacement comprises a ceiling radiant heating and cooling system and a fresh air returning and air supplying heating and cooling system; the fresh air is sent back to wind heating refrigerating system and encircles the setting of new household, the ceiling radiation heating refrigerating system sets up in new household's concrete floor 1.
Fresh air send back wind heating refrigerating system include fresh air pipe 2, forced draught blower 3, heat exchange device 4, fresh air shaft 5, pure fresh air pipeline 6, air exhaust shaft 7, exhaust pipe 8, install forced draught blower 3 and the upper end of intercommunication fresh air shaft 5 on the fresh air pipe 2, the pure fresh air pipeline 6 of lower extreme intercommunication of fresh air shaft 5, pure fresh air pipeline 6 sets up in new household floor, the fresh air port 9 in intercommunication new household is seted up on the pure fresh air pipeline 6, the fresh air port 9 export is connected with the fresh air branch pipe, be provided with on the air exhaust shaft 7 and communicate dirty air outlet 10 in the new household and communicate with exhaust pipe 8, the air outlet end of exhaust pipe 8 is connected through heat exchange device 4 with the air inlet end of fresh air pipe 2.
The fresh air is sent to the air-returning heating and refrigerating system and sent to the fresh air shaft 5 by the air feeder 3, and is sent out from the lower part of the room, so that the whole room is filled with the fresh air at a very low speed, and the fresh air is heated by residents and other indoor heat loads to generate rising air flow. The warm air flow generated in this way carries fresh air into the nose of the person, carries away perspiration and other turbid gases and finally reaches the upper part of the room where it is discharged from the dirty air discharge opening 10. To save air, the air in the living room and bedroom is vented to the kitchen, bathroom and bathroom where a strong ventilation is created, taking away all dirty air and humid air, with the air replacement ratio for the bedroom and living room being 0.6h-1 and for the bathroom, bathroom and kitchen being 2h-1.
The transition season and summer fresh air return air heating and refrigerating system adopts a ventilation mode, particularly in summer, the fresh air return air heating and refrigerating system is recommended to be started at night, outdoor cool air is sent into a room, the purposes of reducing the temperature of the indoor air and cooling the structure of a building are achieved, cold and heat sources are provided by a refrigerating machine room and are conveyed to the fresh air return air heating and refrigerating system with a heat recoverer, due to the change of outdoor meteorological conditions, the air supply machine 3 needs to adjust the air quantity and change the operation working condition, an operation guidance report is provided in an operation adjusting stage to guide the operation, and energy is better saved.
The ceiling radiation heating and refrigerating system is characterized in that strong and weak electric pipes 11, bottom steel bars 12 and five constant radiation plastic pipes 13 are arranged in a concrete floor 1, the five constant radiation plastic pipes 13 are uniformly laid in the concrete floor 1, the bottom steel bars 12 are laid on the lower side of the concrete floor in a criss-cross mode, the strong and weak electric pipes 11 are arranged on the upper sides of the five constant radiation plastic pipes 13, the five constant radiation plastic pipes 13 comprise water supply pipes 14, water return pipes 15 and condensate pipes 16, the water supply pipes 14, the water return pipes 15 and the condensate pipes 16 are respectively communicated with a heat exchange device 4, and a heat insulation layer 25 is further arranged below the concrete floor 1 of the ceiling radiation heating and refrigerating system adopted by a water collector. The water in the penta-constant radiation plastic pipe 13 is kept at about 26-28 ℃ in winter and 20-22 ℃ in midsummer. In this way, the system can last 24 hours at 40W/m by heat dissipation and heat absorption 2 The power of the power can be 70-80W/m within hours 2 Is operated at the power of (1).
The ceiling radiation heating and refrigerating system is more effective in heat supply due to radiation than convection, the surface temperature of objects around the radiation room is 1-3 ℃ higher than the air temperature, cold radiation to a human body is reduced, the temperature distribution of the radiation room is uniform, the use area of the room is not occupied, the surface temperature of a ceiling is mainly controlled, and the ground material is not limited.
On a cold and heat source system, heating setting is mainly considered, and a centralized heat source machine room and a partitioned heat exchange station are arranged, wherein the centralized heat source system mainly comprises a heat source and a heat supply network. The concentrated heat source heating method is a method of supplying heat energy to a user from one or more heat sources through a heat supply network by using hot water or steam as a heat medium. A gas vacuum hot water boiler system is selected to provide winter heat supply for buildings. A cooling tower and a water chilling unit can be additionally arranged for refrigerating in summer. The concentrated heat source system is mainly characterized by improving the energy utilization rate, saving energy, reducing carbon emission, carrying out concentrated management, reducing the potential safety hazard of gas use points, having small average initial investment per unit area and low operating cost, being easy to realize scientific management and improving the heat supply quality. The realization of centralized heating is an infrastructure of urban energy construction, is an important mark of urban modernization, is also an important measure for reasonable distribution and utilization of national energy, and has higher energy consumption for transportation. Under the condition of not considering renewable energy, primary energy is directly used, the energy utilization rate is higher, so that the heat supply is realized by adopting an energy mode mainly using gas, and the system is in the form of a vacuum boiler and a water chilling unit. A vacuum boiler is a form of a boiler, and heats water or other working media by using heat energy released by combustion of fuel (in this case, fuel gas is used as fuel) to produce hot water with specified parameters (temperature and pressure) and quality.
The vacuum boiler has the advantage that the boiler body is operated under negative pressure, which is different from a common boiler. The vacuum boiler runs under negative pressure, the combustion efficiency is high, no potential safety hazard exists, a quality supervision department is not required to report, the water chilling unit is a traditional mature technology, the energy efficiency ratio is high, the maintenance is simple, and the cooling tower is placed outdoors and needs to be shielded by landscapes. Due to the large building area, long-distance conveying of heating/refrigerating media (hot/cold water) is not only unfavorable for maintaining energy quality, but also needs large transmission and distribution energy consumption, and a centralized cooling/heating source machine room is selected and a subarea heat exchange station is arranged. And the energy utilization rate and the transmission and distribution efficiency are maintained in a grading mode.
The heat exchange device 4 comprises a fresh air static pressure box 17, a pressure difference switch 18, a filter screen 19, a cold and hot water coil pipe 20, a sound attenuation layer 21, an air supply static pressure box 22, a temperature and humidity sensor 23 and a heat exchange device box 24, wherein the fresh air static pressure box 17 is arranged at the right end of the heat exchange device box 24, the fresh air static pressure box 17 is communicated with an air outlet of an exhaust pipe 8 and an air inlet of a fresh air pipe 2, a water supply pipe 14, a water return pipe 15 and a condensate pipe 16 are communicated with the cold and hot water coil pipe 20 on the inner side of the heat exchange device box 24, the pressure difference switch 18 is arranged on the heat exchange device box 24, the filter screen 19 is arranged on the right side of an inner cavity of the heat exchange device box 24, the air supply machine 3 is arranged on the left side of the inner cavity of the heat exchange device box 24, the sound attenuation layer 21 is arranged on the outer side of the heat exchange device box 24, a temperature and humidity sensor 23 is further arranged in the heat exchange device box 24, and the left side of the air supply static pressure box 22 is communicated with an air outlet end of the fresh air pipe 2 and communicated with a fresh air shaft 5.
The dirty air outlet 10 is arranged at the upper side of the fresh air house.
In the aspect of heating, four gas-fired vacuum hot water boilers are arranged in a boiler room, water is supplied and returned at 60/50 ℃, the total heat load is 11640kW, and primary hot water is conveyed to heat exchange stations of each area through a boiler hot water circulating pump. In the aspect of refrigeration, three water chilling units can be arranged in a refrigeration room, a refrigerant is an environment-friendly working medium R134a, water is supplied and returned at 7/12 ℃, and the total cooling load is 4250kW; and sending primary water to the heat exchange stations of each area through a primary water circulating pump. The cooling tower is arranged on the outdoor ground of the garden, and the temperature of the cooling water supply and return water is 32/37 ℃. All other equipment and facilities can be shared with a heating system only by adding a water chilling unit, a cooling tower, a cooling water circulating pump and accessories thereof; or a refrigeration compressor can be arranged in the fresh air handling unit. Through the special manufacture of the fresh air unit, the temperature and the humidity of the fresh air in summer are lower than the environmental temperature, so that the refrigeration and dehumidification effects are achieved.
In the embodiment, the utility model discloses it is further, in the design of heat transfer station, terminal canopy and new trend are the water system of relative independence and temperature difference respectively. A ceiling water plate type heat exchanger and a fresh air water plate type heat exchanger are arranged. Supply return water temperature of ceiling water plate heat exchanger: 33/28 ℃ in winter and 20/23 ℃ in summer; supply and return water temperature of fresh air water plate type heat exchanger: 50/40 ℃ in winter. The ceiling water end circulating pump and the fresh air water end circulating pump respectively adopt a secondary pump variable flow transmission and distribution mode to be respectively sent to the ceiling end and the fresh air unit of each building.
Example 1
The pure fresh air pipeline 6 in the fresh air room adopts a De75HDPE double-wall corrugated pipe, the ground of the De75HDPE double-wall corrugated pipe can be 80mm, and the air supply volume of each fresh air branch pipe is 30m 3 The tuyere types are two: FK-130m 3 /h、FK-260m 3 /h。
Example 2
Under the condition that the ground is required to be smaller, the pure fresh air pipeline 6 in the fresh air room adopts a 130X30UPVC plastic pipe, the ground adopting the 130X30UPVC plastic pipe can require 50mm, and the air supply quantity of each fresh air branch pipe is 30m 3 H, tuyere types are two: FK-130m 3 /h；FK-260m 3 /h。
The utility model discloses a cold and hot source form that multipotency is complementary provides the cooling heat supply, accomplishes "constant temperature, constant humidity, constant oxygen, it is permanent quiet, permanent clean" in the true sense, solved among the prior art air conditioning system and only can guarantee in winter heat supply, summer cooling, winter and summer two seasons satisfy people to the comfortable demand of indoor environment heat, it is very inconvenient to the temperature regulation in excessive season, be difficult to the problem of temperature control at human comfortable within range all the time.
Finally, the above preferred embodiments are only intended to illustrate the technical solution of the present invention and not to limit it, and although the present invention has been described in detail by the above preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention as defined by the appended claims.
Claims (8)
1. The utility model provides a house five permanent systems based on heat supply and cold supply and on replacement new trend basis which characterized in that: the residential fifth constant system based on heat supply, cold supply and fresh air replacement comprises a ceiling radiation heating and refrigerating system and a fresh air returning and air supplying heating and refrigerating system; the fresh air returning air heating and refrigerating system is arranged around a fresh air user, and the ceiling radiation heating and refrigerating system is arranged in a concrete floor (1) of the fresh air user;
the fresh air returning and air supplying heating and refrigerating system comprises a fresh air pipe (2), an air feeder (3), a heat exchange device (4), a fresh air shaft (5), a pure fresh air pipeline (6), an air exhaust shaft (7) and an exhaust pipe (8), wherein the air feeder (3) is installed on the fresh air pipe (2) and is communicated with the upper end of the fresh air shaft (5), the lower end of the fresh air shaft (5) is communicated with the pure fresh air pipeline (6), the pure fresh air pipeline (6) is arranged in a fresh air door floor, a fresh air port (9) communicated with the fresh air door is formed in the pure fresh air pipeline (6), the outlet of the fresh air port (9) is connected with a fresh air branch pipe, a dirty air outlet (10) communicated with the fresh air door is formed in the air exhaust shaft (7) and is communicated with the exhaust pipe (8), and the air outlet of the exhaust pipe (8) is connected with the air inlet end of the fresh air pipe (2) through the heat exchange device (4);
the ceiling radiation heating and refrigerating system is characterized in that strong and weak electric pipes (11), bottom steel bars (12) and five constant radiation plastic pipes (13) are arranged in a concrete floor slab (1), the five constant radiation plastic pipes (13) are uniformly laid in the concrete floor slab (1), the bottom steel bars (12) are laid on the lower side of the concrete floor slab in a criss-cross mode, the strong and weak electric pipes (11) are arranged on the upper side of the five constant radiation plastic pipes (13), the five constant radiation plastic pipes (13) comprise water supply pipes (14) and water return pipes (15), condensate pipes (16), the water supply pipes (14), the water return pipes (15) and the condensate pipes (16) are respectively communicated with a heat exchange device (4).
2. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 1, wherein: heat exchange device (4) including new trend static pressure case (17), differential pressure switch (18), filter screen (19), hot and cold water coil pipe (20), amortization layer (21), air supply static pressure case (22), temperature and humidity sensor (23), heat exchange device box (24), new trend static pressure case (17) set up at heat exchange device box (24) right-hand member, new trend static pressure case (17) intercommunication exhaust pipe (8) the gas outlet and the air inlet of new trend pipe (2), delivery pipe (14), wet return (15) and condensate pipe (16) intercommunication heat exchange device box (24) inboard hot and cold water coil pipe (20), differential pressure switch (18) set up on heat exchange device box (24), the right side of heat exchange device box (24) inner chamber is provided with filter screen (19), forced draught blower (3) are installed in heat exchange device box (24) inner chamber left side, its outside is provided with amortization layer (21), still be provided with temperature and humidity sensor (23) in heat exchange device box (24), the left side of heat exchange device box (24) is through air supply case (22) intercommunication new trend pipe (2) the gas outlet end and intercommunication shaft (5).
3. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 1 or 2, wherein: the dirty air outlet (10) is arranged at the upper side position of the fresh air house.
4. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 1 or 2, wherein: the pure fresh air pipeline (6) adopts a De75HDPE double-wall corrugated pipe.
5. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 4, wherein: the ground of the De75HDPE double-wall corrugated pipe can be made into 80mm, and the air supply volume of each fresh air branch pipe is 30m 3 The tuyere types are two: FK-1 (30 m) 3 /h）、FK-2（60m 3 /h）。
6. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 1 or 2, wherein: the pure fresh air pipeline (6) adopts a 130X30UPVC plastic pipe.
7. The residential pentaconstant system based on heating, cooling and fresh air replacement as claimed in claim 6, wherein: the ground of the 130X30UPVC plastic pipe can be 50mm, and the air supply volume of each fresh air branch pipe is 30m 3 H, there are two types of tuyere：FK-1（30m 3 /h）；FK-2（60m 3 /h）。
8. The residential pentagon system based on heating, cooling and fresh air replacement as claimed in claim 1, 2, 5 or 7, wherein: the ceiling radiation heating and refrigerating system adopted by the collector pipe of the water collector is also provided with a heat insulation layer (25) below the concrete floor slab (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222644841.9U CN218645679U (en) | 2022-10-09 | 2022-10-09 | House five constant systems based on heat supply and cold supply and fresh air replacement basis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222644841.9U CN218645679U (en) | 2022-10-09 | 2022-10-09 | House five constant systems based on heat supply and cold supply and fresh air replacement basis |
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| CN218645679U true CN218645679U (en) | 2023-03-17 |
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| CN202222644841.9U Active CN218645679U (en) | 2022-10-09 | 2022-10-09 | House five constant systems based on heat supply and cold supply and fresh air replacement basis |
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- 2022-10-09 CN CN202222644841.9U patent/CN218645679U/en active Active
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