CN203857595U - Evaporative cooling air conditioner unit combining cooling and heating - Google Patents

Abstract

The utility model discloses a combined cooling and heating evaporative cooling air-conditioning unit, which includes an outdoor unit for dew point indirect evaporative cooling. The lower part of the air duct has a dry-type fan coil unit, and also includes a gas wall-hung boiler arranged on the indoor wall, a floor radiation heat exchange pipe arranged at the lower part of the indoor bottom plate, and a solar heat collector arranged outside the roof. The cold air produced by the evaporative cooling air-conditioning unit of the utility model can meet the indoor fresh air demand, and part of the produced cold water is passed into the wall of the embedded pipe to reduce the heat of outdoor solar radiation, and the other part is passed into the dry fan coil to eliminate indoor waste heat; Part of the low-temperature hot water produced by the solar collector is used to reduce the heat transfer from indoor to outdoor, and the other part heats the indoor air temperature through radiant heating. The gas wall-hung boiler can assist solar energy to produce low-temperature hot water that meets the requirements.

Description

An evaporative cooling air-conditioning unit combining cooling and heating

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to an evaporative cooling air-conditioning unit combined with cooling and heating, in particular to an outdoor unit for indirect evaporative cooling by dew point, embedded tube wall, solar heat collector, and floor radiation heat exchange tube , dry fan coil unit and gas wall-hung boiler evaporative cooling air conditioning unit. the

Background technique

The construction industry is one of the three major energy-consuming industries in society. At present, my country's building energy consumption accounts for about 1/3 of social energy consumption, of which the largest energy consumption is air conditioning and heating equipment. In fact, the building envelope has great energy-saving potential. my country has also promulgated corresponding building energy-saving codes and building energy-saving standard systems, and formulated a series of building energy-saving systems. The energy consumed by air conditioning and heating equipment is mainly reflected in winter and summer. People need a comfortable indoor environment, so they need auxiliary air conditioning and heating equipment to deliver a certain amount of cooling and heat to the room. In summer, the more heat load enters the room, the greater the cooling capacity that needs to be provided; in winter, the more heat is emitted from the room, the greater the heat that needs to be provided. By reducing the heat transfer between the indoor and outdoor environments, the cooling and heat required in the room can be greatly reduced within a certain range, thereby reducing energy consumption. the

Traditional air conditioners use freon as a refrigerant, which is not only harmful to the environment, but also consumes a lot of electricity. In addition, traditional air conditioners generally recycle indoor return air, resulting in a decrease in indoor air quality. Staying in this environment for a long time may easily cause "air conditioning syndrome". Evaporative cooling air-conditioning technology uses water as a refrigerant to reduce the temperature of air and water through water evaporative cooling, which has the characteristics of energy saving, environmental protection, health and good air quality. the

When heating in winter, coal is mostly used to make hot water to meet people's heating needs. However, there is a shortage of coal resources in my country, and the quality of coal varies. Insufficient combustion will lead to great energy consumption. Considering the characteristics of abundant solar radiation energy and cheap natural gas in my country, the technology of using solar energy to produce hot water has become relatively Mature, low-temperature hot water produced by solar energy can be fully used in winter, and low-grade energy can be used for heating to reduce energy consumption; while hot water produced by natural gas can supplement continuous hot water supply when solar energy is insufficient. the

Utility model content

The purpose of this utility model is to provide an evaporative cooling air-conditioning unit combining cooling and heating, which can not only realize the simultaneous production of cold air and cold water, but also continuously supply low-temperature hot water that meets the requirements by using solar collectors and gas wall-hung boilers. the

The technical scheme adopted by the utility model is that a combined cooling and heating evaporative cooling air-conditioning unit includes a dew point indirect evaporative cooling outdoor unit, the air supply port of the dew point indirect evaporative cooling outdoor unit is connected with an air supply pipe, and the air supply pipe passes through It extends into the room through the wall of the embedded pipe, and the lower part of the air supply pipe extending into the room is equipped with a dry fan coil unit, which also includes a gas wall-hung boiler installed on the indoor wall, a floor radiation heat exchange tube installed at the lower part of the indoor floor, and a roof. The solar collectors set on the outside and the pipeline network connected between them. the

The utility model is also characterized in that

A seventh pipe and an eighth pipe are arranged in parallel in the wall of the embedded pipe, and one end of the seventh pipe communicates with the eighth pipe; the mouth of the indoor air supply pipe is provided with an air supply port. the

The structure of the pipe network connecting the dew point indirect evaporative cooling outdoor unit, solar collector, embedded pipe wall, dry fan coil, floor radiation heat exchange pipe and gas wall-hung boiler is:

Dew point indirect evaporative cooling The water inlet of the evaporative cooling coil in the outdoor unit is connected to the seventh pipe in the embedded pipe wall through the first pipe, and the water outlet of the evaporative cooling coil is connected to the seventh pipe in the embedded pipe wall through the second pipe. Eighth pipe connection;

The first pipeline is respectively connected to the fifth pipeline and the fourth pipeline through the first conversion valve, and the second pipeline is respectively connected to the sixth pipeline and the third pipeline through the second conversion valve. Both the fifth pipeline and the sixth pipeline are connected with the dry fan coil connection;

The fourth pipeline is connected to the water inlet of the solar collector through the twelfth pipeline and the fourteenth pipeline in turn, and the third pipeline is connected to the water outlet of the solar collector through the eleventh pipeline and the thirteenth pipeline in turn;

The water inlet of the floor radiation heat exchange tube is connected to the eleventh pipeline through the ninth pipeline, and the water outlet of the floor radiation heat exchange tube is connected to the twelfth pipeline through the tenth pipeline; The twelfth pipeline is connected, and the water outlet of the gas wall-hung boiler is connected with the eleventh pipeline through the fifteenth pipeline. the

A first valve is arranged at the junction of the fifteenth pipeline and the eleventh pipeline; a second valve is arranged at the junction of the sixteenth pipeline and the twelfth pipeline; both the third pipeline and the fourth pipeline are arranged under the outdoor ground. the

The dew point indirect evaporative cooling outdoor unit includes an organic unit casing. Air inlets and air supply windows are respectively arranged on the opposite side walls of the unit casing, and a blower is arranged in the air supply window; the unit casing is arranged in sequence according to the primary air flow direction. There are dew point indirect evaporative coolers, filler-evaporative cooling coil composite evaporative coolers. the

The dew point indirect evaporative cooler includes a dew point indirect heat exchanger. The upper part of the dew point indirect heat exchanger is provided with a water distribution grid a, a water distributor a, a water baffle a and an exhaust fan a. The dew point indirect heat exchanger The lower part is provided with the first air duct and the water collection tank a in turn; the water collection tank a is respectively provided with a circulating water pump a, a water processor a and a water supply valve a, and the circulating water pump a and the water processor a are connected to the water distributor a through the water supply pipe ; A filter is provided between the dew point indirect heat exchanger and the air inlet, and an air outlet a is provided on the top wall of the unit casing corresponding to the exhaust fan a. the

The dew point indirect heat exchanger is composed of several heat exchange tubes arranged horizontally. The small holes on the pipe wall are reduced in turn; the exhaust fan b is a frequency conversion fan; the water supply valve a is a float valve or a solenoid valve. the

Filler-evaporative cooling coil compound evaporative cooler, including filler, the upper part of the filler is provided with water distribution grid b, water distributor b, water baffle b and exhaust fan b in turn, and the lower part of the filler is arranged with evaporative cooling The coil, the second air duct and the water collection tank b; the water baffle c is set between the second air duct and the blower; the water collection tank b is respectively equipped with a circulating water pump b, a water processor b, a water supply valve b, and a circulating water pump b The water processor b is connected to the water distributor b through the water pipe; the exhaust port b is provided on the top wall of the unit casing corresponding to the exhaust fan b. the

The filler is plant fiber filler, metal filler, porous ceramic filler or polymer filler. the

The exhaust fan b is a variable frequency fan; the water supply valve b is a float valve or a solenoid valve. the

The beneficial effects of the utility model are:

(1) The evaporative cooling air conditioner unit of this utility model uses "water" as a refrigerant to achieve the purpose of cooling through evaporative cooling, and uses "solar energy" as a heat source to produce hot water, which has the characteristics of environmental protection and energy saving. the

(2) In the evaporative cooling air conditioner unit of the present utility model, the dew point indirect evaporative cooling outdoor unit can produce cold air and cold water at the same time, and can drive the terminals of multiple indoor units to work; the dew point indirect evaporative cooler uses a part of the primary air to pass through the orifice It enters the wet channel and exchanges heat and moisture with the spray water, thereby reducing the temperature of the primary air, so that the output cold air approaches the dew point temperature of the inlet air and reaches the sub-humidity bulb temperature; the evaporative cooling coil forms a closed water system, producing The cold water produced is not in direct contact with the air, and the water quality is good, which can meet the needs of high temperature cold water. the

(3) The evaporative cooling air-conditioning unit of the present utility model adopts a new tubular enclosure structure, which can make full use of low-grade energy; Enhance the insulation effect of the enclosure structure in summer and reduce the transfer of outdoor heat to the interior; in winter, part of the low-temperature hot water produced by the solar collector is passed into the tubular enclosure structure to increase the insulation effect of the maintenance structure in winter. Reduce indoor heat transfer to the outside; also can realize seasonal operation mode conversion through the valve, realize passive cooling and heating, and have the characteristics of energy saving and environmental protection. the

(4) The air-water system is adopted in the evaporative cooling air-conditioning unit of the present utility model, and the cold air taken by the dew point indirect evaporative cooling outdoor unit is directly sent into the room through the air supply pipe and the air supply port, and part of the produced cold water is passed into the indoor terminal device , to absorb indoor waste heat and maintain a comfortable indoor environment in summer. the

(5) In the evaporative cooling air-conditioning unit of the present utility model, the heating system adopts floor radiation heating, and a part of the hot water produced by the solar collector passes into the floor radiation heat exchange tube of indoor radiation, and transfers heat to the room to meet the needs of the human body. Feet warm and head cool" feeling. the

(6) The evaporative cooling air-conditioning unit of the utility model is equipped with a gas-fired wall-hung boiler, which can ensure the continuous supply of low-temperature hot water that meets the requirements under the unfavorable environment of insufficient solar energy, and has the characteristics of safety and reliability. the

Description of drawings

Fig. 1 is the structural representation of the utility model evaporative cooling air-conditioning unit;

Fig. 2 is a structural schematic diagram of the dew point indirect evaporative cooling outdoor unit in the evaporative cooling air-conditioning unit of the present invention;

Fig. 3 is a schematic structural diagram of the passive cooling and heating waterway system in the evaporative cooling air-conditioning unit of the present invention, which operates in conjunction with the embedded pipe wall;

Fig. 4 is a structural schematic diagram of the waterway system when the evaporative cooling air-conditioning unit of the utility model is used for cooling;

Fig. 5 is a structural schematic diagram of the waterway system when the evaporative cooling air-conditioning unit of the present invention is heating. the

In the figure, A. Dew point indirect evaporative cooling outdoor unit, B. Solar collector, C. Embedded tube wall, D. Air supply port, E. Dry fan coil unit, F. Floor radiation heat exchange tube, G. Gas wall-hung boiler, 1. Air inlet, 2. Filter, 3. Dew point indirect heat exchanger, 4. Water distribution grid a, 5. Water distributor a, 6. Water baffle a, 7. Exhaust fan a, 8. Exhaust fan b, 9. Water baffle b, 10. Water distributor b, 11. Water distribution grid b, 12. Filling, 13. Evaporative cooling coil, 14. Blower fan, 15. Water baffle c, 16. Circulating water pump a, 17. Water processor a, 18. Water collecting tank a, 19. Water replenishing valve a, 20. Water replenishing valve b, 21. Water collecting tank b, 22. Water processor b, 23. Circulating water pump b, 24. Air supply pipe, 25. Air outlet a, 26. Air outlet b, G _1. First duct, G _2. Second duct, G _3. Third duct, G _4. Fourth duct, G ₅ . Fifth pipeline, G ₆ . Sixth pipeline, G ₇ . Seventh pipeline, G ₈ . Eighth pipeline, G ₉ . Ninth pipeline, G ₁₀ . Tenth pipeline, G ₁₁ . Eleventh pipeline, G ₁₂ . Twelfth pipeline, G ₁₃ . Thirteenth pipeline, G ₁₄ . Fourteenth pipeline, G ₁₅ . Fifteenth pipeline, G ₁₆ . Sixteenth pipeline, P ₁ . First switching valve, P ₂ . Two switching valves, P ₃ . First valve, P ₄ . Second valve.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. the

The evaporative cooling air conditioner unit of the utility model has a structure as shown in Fig. 1, including an outdoor unit A for dew point indirect evaporative cooling, the air supply port of the dew point indirect evaporative cooling outdoor unit A is connected with an air supply pipe 24, and the air supply pipe 24 passes through the embedded The pipe wall C extends into the room, and the lower part of the air supply pipe 24 extending into the room is provided with a dry-type fan coil unit E, which also includes a gas wall-hung boiler G installed on the indoor wall, a floor radiation heat exchange tube F installed at the bottom of the indoor floor, The solar heat collector B arranged on the outside of the roof and the pipeline network connected therebetween. the

As shown in FIG. 1 and FIG. 3 , an air supply port D is provided at the mouth of the indoor air supply pipe 24 . A seventh pipe G ₇ and an eighth pipe G ₈ are arranged in parallel in the embedded pipe wall C, and the seventh pipe G ₇ communicates with one end of the eighth pipe G ₈ .

The structure of the pipe network connecting the dew point indirect evaporative cooling outdoor unit A, solar collector B, embedded pipe wall C, dry fan coil unit E, floor radiation heat exchange pipe F and gas wall-hung boiler G is:

As shown in Figure 1 and Figure 3, the water inlet of the evaporative cooling coil 13 in the dew point indirect evaporative cooling outdoor unit A is connected to the seventh pipe _G7 in the embedded pipe wall C through the first pipe _G1 , and the evaporative cooling plate The water outlet of the pipe 13 is connected to the eighth pipe _G8 embedded in the pipe wall C through the second pipe _G2 ; the first pipe _G1 is respectively connected to the fifth pipe G5 _and the fourth pipe _G5 through the first switching valve P1 The pipeline G ₄ and the second pipeline G ₂ are respectively connected to the sixth pipeline G ₆ and the third pipeline G ₃ through the second switching _{valve P 2 , the fifth pipeline G 5 and} the sixth pipeline G ₆ are both connected to the dry fan coil unit E connect. The fourth pipeline G ₄ is connected to the water inlet of the solar collector B through the twelfth pipeline G ₁₂ and the fourteenth pipeline G ₁₄ in turn, and the third pipeline G ₃ is sequentially passed through the eleventh pipeline G ₁₁ and the thirteenth pipeline G ₁₃ is connected to the water outlet of the solar collector B, the water inlet of the floor radiation heat exchange pipe F is connected to the eleventh pipe _G11 through the ninth pipe _G9 , and the water outlet of the floor radiation heat exchange pipe F is passed through the tenth pipe G ₁₀ is connected to the twelfth pipeline G ₁₂ , the water inlet of the gas wall-hung boiler G is connected to the twelfth pipeline G ₁₂ through the sixteenth pipeline G ₁₆ , and the water outlet of the gas wall-hung boiler G is connected to the tenth pipeline through the fifteenth pipeline G ₁₅ A pipeline _G11 is connected, a first valve _P3 is set at the connection between the fifteenth pipeline _G15 and the eleventh pipeline _G11 , and a second valve P is set at the connection between the sixteenth pipeline _G16 and the twelfth pipeline _{G12 4} .

Both the third pipeline _G3 and the fourth pipeline _G4 are arranged under the outdoor ground.

The dew point indirect evaporative cooling outdoor unit A has a structure as shown in Figure 2, including an organic unit casing, and the opposite side walls of the unit casing are respectively provided with an air inlet 1 and an air supply window. A water baffle c15 is set between 14 and the second air duct; a dew point indirect evaporative cooler and a packing-evaporative cooling coil compound evaporative cooler are arranged in sequence in the unit shell according to the primary air flow direction. the

Dew point indirect evaporative cooler, its structure is shown in Figure 2, including dew point indirect heat exchanger 3, the upper part of dew point indirect heat exchanger 3 is provided with water distribution grid a4, water distributor a5, water retaining plate a6 and exhaust fan in sequence a7, the lower part of the dew point indirect heat exchanger 3 is provided with the first air duct and the water collection tank a18 in sequence, and the water collection tank a18 is respectively provided with the circulating water pump a16, the water processor a17 and the water supply valve a19, the circulating water pump a16 and the water processor a17 The water supply pipe is connected to the water distributor a5, a filter 2 is set between the dew point indirect heat exchanger 3 and the air inlet 1, and an air exhaust port a25 is set on the top wall of the unit housing corresponding to the exhaust fan a7. the

The dew point indirect heat exchanger 3 is composed of several heat exchange tubes arranged horizontally. The small holes on the tube wall of the heat pipe decrease successively. the

Filler-evaporative cooling coil compound evaporative cooler, its structure is shown in Figure 2, including filler 12, and the upper part of filler 12 is provided with water distribution grid b11, water distributor b10, water retaining plate b9 and exhaust fan b8 in sequence, The lower part of the filler 12 is provided with a cooling coil 13, an air duct and a water collection tank b21 in sequence, and the water collection tank b21 is respectively provided with a circulating water pump b23, a water processor b22 and a water supply valve b20, and the circulating water pump b23 and the water processor b22 pass through another The water supply pipe is connected to the water distributor b10, and the top wall of the unit casing corresponding to the exhaust fan b8 is provided with an air exhaust port b26. the

Filler 12 is plant fiber filler, metal filler, porous ceramic filler or polymer filler. the

The exhaust fan a7, the exhaust fan b8, and the blower fan 14 are all frequency conversion fans, which can realize energy saving through control. the

Both the water replenishment valve a19 and the water replenishment valve b20 are float valves or electromagnetic valves. the

The dew point indirect evaporative cooler 3 is divided into two channels: a wet channel and a dry channel; the dew point indirect evaporative cooler 3 is arranged horizontally according to the horizontal direction of the primary air intake, and holes are drilled sequentially from the lower left to the upper left, and a part of the primary air intake can be It enters the wet channel through the orifice, and performs heat and moisture exchange with the spray water to pre-cool the primary air intake of the other part; the pre-cooled air is vertically upward, and performs heat and moisture exchange with the water film on the outer surface of the evaporative cooling coil 13 , the air takes away the heat of the spray water, and the spray water cools the circulating water in the evaporative cooling coil 13 pipes, and the cooled circulating water enters the dry-type fan coil unit E at the end of the room through the pipes. A certain thickness of packing 12 is arranged on the evaporative cooling coil 13 to increase the capacity of water and air to exchange heat and humidity. the

In the evaporative cooling air-conditioning unit of the utility model, the dew point indirect evaporative cooling outdoor unit A, solar heat collector B, embedded pipe wall C, air supply port D, dry fan coil unit E and gas wall-hung boiler G are set to form a An evaporative cooling air-conditioning unit combining passive cooling and heating, in which the functions of each component are as follows:

The dew point indirect evaporative cooling outdoor unit A sends the cold air produced indoors to meet the fresh air requirements; part of the cold water produced is passed into the wall C with embedded pipes to reduce the heat of summer solar radiation, and the other part is passed into the indoor set Dry fan coil E, eliminate indoor waste heat. the

Solar collector B can absorb solar radiant energy and convert it into hot water; the low-temperature hot water produced can meet the hot water demand of passive heating and indoor floor radiant heating; part of the low-temperature hot water is passed into the wall of the embedded pipe C, reducing the heat transfer from indoor to outdoor means reducing the indoor heat load; another part of low-temperature hot water passes into the indoor floor radiation heat exchange tube F to heat the indoor air temperature through radiation. the

The built-in tube wall C is used in the building maintenance structure, and the high-temperature cold water and low-temperature hot water can be passed into the embedded tube in the wall, effectively using low-grade energy, realizing passive cooling and heating, and reducing the outdoor and indoor environment. Excellent heat transfer, reducing the cooling load and heating load required in the room. the

The indoor end adopts a dry-type fan coil unit E, which is fed with high-temperature cold water produced by evaporative cooling. There is no need to set up condensate water pipelines to prevent the growth and spread of indoor bacteria. the

Gas wall-hung boiler G can use the heat of natural gas combustion to produce hot water. In extreme weather, when the hot water produced by the solar collector cannot meet the requirements, the solar collector B can be assisted to ensure the continuous supply of low-temperature hot water that meets the requirements during the heating season, which has the effect of increasing the stability of the system operation . the

The working process of the utility model evaporative cooling air conditioning unit is as follows:

In the summer cooling season, as shown in Figure 1:

The outdoor fresh air enters the dew point indirect heat exchanger 3 through the air inlet 1 and the filter 2, the primary air enters the dry channel, passes through the orifice of the dew point indirect heat exchanger 3, and part of it enters the wet channel of the dew point indirect heat exchanger 3 and becomes the secondary air. Air. Viewed from the horizontal direction of the dew-point indirect heat exchanger 3, the primary air entering the dry channel of the dew-point indirect heat exchanger 3 is the most, is wet-cooled, and enters the evaporative cooler combined with packing-cooling coil; the air passing through the orifice becomes secondary air. The secondary air exchanges heat and moisture with the water film formed on the surface of the dew point indirect heat exchanger 3 by the circulating water sprayed by the water distributor a5 and the secondary water distribution of the water distribution grid a4. The primary air delivered to the dry passage by the wall of the heat exchanger 3 passes through the water baffle a6 and the exhaust fan a7 and is discharged outside by the air outlet a25, and the spray water finally falls into the water collection tank a18 set below and passes through the water processor a17 and the circulating water pump a16 are connected with the water distributor a5 to form a loop, and the water collection tank a18 can be supplemented by the water supply valve a19. the

Part of the air that enters the dew point indirect evaporative cooling outdoor unit A and whose temperature is lowered on the side of the evaporative cooler is sent to the air supply pipe 24 through the water baffle c15 and the blower fan 14, and then sent to the room through the air supply port D on the air supply pipe 24 to meet the Fresh air demand: the indoor return water is sprayed on the filler 12 through the water distributor b10 and the water distribution grid b11, and then falls on the surface of the evaporative cooling coil 13 to form a uniform water film, and the other part of the air and the water on the evaporative cooling coil 13 The film performs heat and moisture exchange, taking away the heat of the spray water, and the spray water transfers this part of the cold energy to the circulating water in the evaporative cooling coil 13, and the heated air continues upward to exchange heat and moisture with the water film on the surface of the filler 12, The return water in the pre-cooling room passes through the water baffle b9 and the exhaust fan b8 and is discharged outside from the air outlet b26, and the spray water finally falls into the lower water collection tank b21, passes through the water processor b22 and the circulating water pump b23, and connects with the water distributor b10 connected to form a loop, and the water collection tank b21 can be supplemented with water through the water supply valve b20. the

As shown in Figure 4, part of the cold water produced passes through the second pipeline G ₂ and the sixth pipeline G ₆ into the dry fan coil unit E installed indoors to absorb the heat of the indoor return air, and then passes through the fifth pipeline G ₅ and the sixth pipeline One pipe G ₁ returns to the evaporative cooling coil 13; as shown in Figure 1, another part of cold water passes through the second pipe G ₂ and the eighth pipe G ₈ into the dry-type fan coil E installed indoors to absorb the heat of the indoor return air , return to the evaporative cooling coil 13 through the seventh pipeline G ₇ and the first pipeline G ₁ .

In the winter heating season, as shown in Figure 1 and Figure 5:

When the low-temperature hot water produced by solar thermal collector B meets the requirements, part of the low-temperature hot water produced by solar thermal collector B is sent through the thirteenth pipeline G ₁₃ , the eleventh pipeline G ₁₁ and the ninth pipeline G ₉ To the indoor floor radiation heat exchange tube F, and then return to the solar collector B through the tenth pipeline G ₁₀ , the twelfth pipeline G ₁₂ , and the fourteenth pipeline G ₁₄ ; another part of low-temperature hot water passes through the thirteenth pipeline G ₁₃ , the eleventh pipeline G ₁₁ , the third pipeline G ₃ , and the eighth pipeline G ₈ lead into the embedded pipe wall C, and pass through the seventh pipeline G ₇ , the fourth pipeline G ₄ , the twelfth pipeline G ₁₂ , The fourteenth conduit G ₁₄ returns to the solar collector B.

When the low-temperature hot water produced by the solar collector B cannot meet the requirements, the indoor gas wall-hung boiler G is turned on, and the hot water produced by the solar collector B passes through the thirteenth pipeline G ₁₃ , and the gas wall-hung boiler G is produced The hot water passes through the fifteenth pipeline G ₁₅ , is mixed in the eleventh pipeline G ₁₁ , is sent to the indoor floor radiation heat exchange tube F through the ninth pipeline G ₉ , and then passes through the tenth pipeline G ₁₀ and the twelfth pipeline G ₁₂ , the fourteenth pipeline G ₁₄ , and the sixteenth pipeline G ₁₆ return to the solar collector B and gas wall-hung boiler G; the other part of low-temperature hot water passes through the eighth pipeline G ₈ into the embedded pipe wall C, Return to the solar collector B and gas wall-hung boiler G through the seventh pipeline G ₇ , the fourth pipeline G ₄ , the twelfth pipeline G ₁₂ , the eleventh pipeline G ₁₄ , and the sixteenth pipeline G ₁₆ .

Through the first conversion valve P ₁ and the second conversion valve P ₂ , the conversion of cooling and heating can be realized; through the first valve P ₃ and the second P ₄ , the gas wall-hung boiler G is used to control the solar collector B to produce low-temperature heat water aid.

In the evaporative cooling air-conditioning unit of the utility model, the embedded pipe wall C can be used to realize passive cooling and heating by using low-grade energy to reduce the indoor cooling and heating load; the dew point indirect evaporative cooling outdoor unit A can produce cold air and cold water at the same time , Drive multiple indoor terminals to work. The cold air is sent to the room through the air supply pipe 24 and the air supply port to meet the indoor fresh air demand. A part of the cold water is passed into the wall C of the embedded pipe to reduce the transfer of outdoor heat to the room, and the other part is passed into the end dry fan coil unit F in the room to absorb the waste heat in the room; the solar collector A can absorb solar radiation energy, To produce low-temperature hot water, part of it is passed into the wall C of the embedded pipe to reduce the heat transfer between the indoor environment and the outdoor environment, and reduce the indoor heat load; the other part of the hot water passes through the indoor floor radiation heat exchange tube F, and is heated by radiation The indoor air temperature can meet the heating demand, and at the same time, it has the comfortable feeling of "warming the feet and cooling the head". The gas wall-hung boiler G can make full use of the heat of natural gas combustion to produce hot water, which is used to assist the solar collector A in the heating season to produce hot water. the

Claims (10)

1. A combined evaporative cooling air-conditioning unit for cooling and heating, characterized in that it includes a dew point indirect evaporative cooling outdoor unit (A), and the air supply port of the dew point indirect evaporative cooling outdoor unit (A) is connected with an air supply pipe ( 24), the air supply pipe (24) extends into the room through the embedded pipe wall (C), and the lower part of the air supply pipe (24) extending into the room is provided with a dry fan coil unit (E), which also includes the indoor A gas wall-hung boiler (G) arranged on the wall, a floor radiation heat exchange pipe (F) arranged at the lower part of the indoor floor, a solar heat collector (B) arranged outside the roof, and a pipeline network connected therebetween. the 2. The evaporative cooling air-conditioning unit according to claim 1, characterized in that, the seventh pipe (G ₇ ) and the eighth pipe (G ₈ ) are arranged in parallel in the wall (C) of the embedded pipe, and the The seventh pipeline (G ₇ ) communicates with one end of the eighth pipeline (G ₈ ); an air supply port (D) is provided at the mouth of the indoor air supply pipe (24). 3. The evaporative cooling air-conditioning unit according to claim 2, characterized in that the dew point indirect evaporative cooling outdoor unit (A), solar collector (B), embedded tube wall (C), dry fan The pipe network structure connected between the coil (E), the floor radiant heat exchange tube (F) and the gas wall-hung boiler (G) is: The water inlet of the evaporative cooling coil (13) in the dew point indirect evaporative cooling outdoor unit (A) passes through the first pipe (G ₁ ) and the seventh pipe (G ₇ ) in the embedded pipe wall (C) connected, the water outlet of the evaporative cooling coil (13) is connected to the eighth pipe (G ₈ ) in the embedded pipe wall (C) through the second pipe (G ₂ ); The first pipeline (G ₁ ) is respectively connected to the fifth pipeline (G ₅ ) and the fourth pipeline (G ₄ ) through the first switching valve (P ₁ ), and the second pipeline (G 2 ) is connected to the second pipeline (G ₂ ) through the second switching valve (P 1 ). The valve (P ₂ ) is respectively connected to the sixth pipeline (G ₆ ) and the third pipeline (G ₃ ), and the fifth pipeline (G ₅ ) and the sixth pipeline (G ₆ ) are both connected to the dry fan coil unit (E )connect; The fourth pipeline (G ₄ ) is sequentially connected to the water inlet of the solar collector (B) through the twelfth pipeline (G ₁₂ ) and the fourteenth pipeline (G ₁₄ ), and the third pipeline (G ₃ ) Connect to the water outlet of the solar collector (B) through the eleventh pipeline (G ₁₁ ) and the thirteenth pipeline (G ₁₃ ) in turn; The water inlet of the floor radiation heat exchange pipe (F) is connected to the eleventh pipe (G ₁₁ ) through the ninth pipe (G ₉ ), and the water outlet of the floor radiation heat exchange pipe (F) is connected through the tenth pipe ( G ₁₀ ) is connected with the twelfth pipeline (G ₁₂ ); The water inlet of the gas wall-hung boiler (G) is connected to the twelfth pipeline (G ₁₂ ) through the sixteenth pipeline (G ₁₆ ), and the water outlet of the gas wall-hung boiler (G) is connected through the fifteenth pipeline (G _{15 )} . ) is connected with the eleventh pipeline (G ₁₁ ). 4. The evaporative cooling air-conditioning unit according to claim 3, characterized in that a first valve (P ₃ ) is provided at the connection between the fifteenth pipeline (G ₁₅ ) and the eleventh pipeline (G ₁₁ ); A second valve (P ₄ ) is set at the connection between the sixteenth pipeline (G ₁₆ ) and the twelfth pipeline (G ₁₂ ); the third pipeline (G ₃ ) and the fourth pipeline (G ₄ ) are both set at outdoor ground. 5. The evaporative cooling air conditioner unit according to claim 3, characterized in that, the dew point indirect evaporative cooling outdoor unit (A) comprises an organic unit housing, and the opposite side walls of the unit housing are respectively provided with Air inlet (1), air supply window, the air supply window is provided with a blower fan (14); According to the flow direction of the primary air, the casing of the unit is provided with a dew point indirect evaporative cooler and a filler-evaporative cooling coil composite evaporative cooler. the 6. The evaporative cooling air-conditioning unit according to claim 5, characterized in that, the dew point indirect evaporative cooler includes a dew point indirect heat exchanger (3), and the upper part of the dew point indirect heat exchanger (3) is successively Water distribution grid a (4), water distribution device a (5), water retaining plate a (6) and exhaust fan a (7) are provided, and the lower part of the dew point indirect heat exchanger (3) is sequentially provided with the first One air duct and water collection tank a (18); The water collecting tank a (18) is respectively provided with a circulating water pump a (16), a water processor a (17) and a replenishment valve a (19), and the circulating water pump a (16) and the water processor a (17) Connect with the water distributor a (5) through the water supply pipe; A filter (2) is provided between the dew point indirect heat exchanger (3) and the air inlet (1), and an air outlet a (25 ). the 7. The evaporative cooling air-conditioning unit according to claim 6, characterized in that, the dew point indirect heat exchanger (3) is composed of several horizontally arranged heat exchange tubes, and the length direction of the several heat exchange tubes is along the direction of the primary air In the direction of entry, small holes are provided on the tube wall of each heat exchange tube, and the small holes on the tube wall of the heat exchange tube from bottom to top decrease in turn; Described exhaust blower b (8) is the fan of variable frequency; The water supplement valve a (19) is a float valve or a solenoid valve. the 8. The evaporative cooling air-conditioning unit according to claim 5, characterized in that, the evaporative cooler combined with filler-evaporative cooling coil includes filler (12), and the top of the filler (12) is sequentially arranged with Water distribution grid b (11), water distributor b (10), water retaining plate b (9) and exhaust fan b (8), the lower part of the packing (12) is sequentially provided with evaporative cooling coils (13) , the second air duct and the water collection tank b (21); A water baffle c (15) is arranged between the second air duct and the blower (14); The water collecting tank b (21) is respectively provided with a circulating water pump b (23), a water processor b (22) and a replenishment valve b (20), and the circulating water pump b (23) and the water processor b (22) Connect with the water distributor b (10) through the water pipe; An exhaust outlet b (26) is provided on the top wall of the casing corresponding to the exhaust fan b (8). the 9. The evaporative cooling air conditioner unit according to claim 8, characterized in that the filler (12) is plant fiber filler, metal filler, porous ceramic filler or polymer filler. the 10. The evaporative cooling air conditioner unit according to claim 8, characterized in that, the exhaust fan b (8) is a variable frequency fan; the water supply valve b (20) is a float valve or a solenoid valve. the