Radiant convection combined air conditioning system for passive house

Abstract

The application belongs to the field of air conditioning equipment, and proposes a radiation convection composite air conditioning system for passive house, which comprises an air source heat pump, a fresh air dehumidification integrated machine, a distribution water collector, a plurality of capillary tube networks and a plurality of geothermal coils, the air supply side of the fresh air dehumidification integrated machine is provided with an air supply pipe, a plurality of branches are arranged on the air supply pipe, and an electric air valve and a temperature controller are arranged on each branch, the temperature controller is electrically connected with the distribution water collector, the air source heat pump is connected with the fresh air dehumidification integrated machine, the geothermal coil is connected with the distribution water collector, the heat exchange section is circularly connected with the air source heat pump, a bypass pipeline is arranged between the filtering section and the heat recovery section, the output end of the bypass pipeline is connected with the air supply bin, a bypass valve is arranged on the bypass pipeline, an air return valve is arranged between the air return bin and the air supply bin, and the fresh air side of the fresh air dehumidification integrated machine is provided with a quick-release fresh air filtering integrated machine. The device is reasonable in design, simple in structure, diversified in mode, beneficial to reduce cost and improve air conditioning response efficiency, and suitable for large-scale promotion.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of air conditioning equipment, and relates to a radiation convection composite air conditioning system for passive house. BACKGROUND

[0002] The near zero energy building (passive house) has developed rapidly in recent years, and is a kind of scientific, economic and environmentally friendly passive house low-load green building. The existing passive house air conditioning system commonly uses a heat pump type fresh air heat recovery integrated air conditioning machine or a multi-connected machine + fresh air heat recovery system, and has problems of large indoor wind feeling, uneven temperature, humidity that cannot be adjusted, obvious noise, and poor indoor equipment hygiene. If a capillary radiation air conditioner + fresh air dehumidification system is used, these problems can be solved.

[0003] Since most of the existing fresh air dehumidifiers do not have a heat recovery section, the fresh air dehumidifiers with a heat recovery section have a heat recovery efficiency that does not meet the requirements of the passive house, and only the equipment series connection scheme of a high-efficiency heat recovery machine + fresh air dehumidifier can be used. However, this scheme needs to change the air pressure of the existing heat recovery machine and the internal structure of the fresh air dehumidifier, so as to meet the requirements of the passive house for the power consumption per unit air volume of the equipment.

[0004] The conventional capillary radiation air conditioner + fresh air dehumidification system has the weakness of slow temperature regulation response of the radiation air conditioner, and the cooling and heating capacity of the radiation air conditioner is greatly limited by the top wall paving area. If the capillary tube seat is completely used as the temperature control terminal, the system cost will be high. For example, the existing patent CN201520747812.2 discloses a radiation type central air conditioner and fresh air system for household cooling / warming. Each room is provided with an indoor air supply port and an indoor return air port. Each indoor air supply port is connected with the air supply port of a fresh air dehumidification integrated machine, and each indoor return air port is connected with the return air port of the fresh air dehumidification integrated machine. The fresh air inlet of the fresh air dehumidification integrated machine is connected with the outdoor, and the return air port of the fresh air dehumidification integrated machine is provided with a humidity sensor. Each capillary tube network unit is composed of a three-way valve two, a capillary tube network heat exchanger, a dew point sensor, a second temperature sensor and a temperature controller. The dew point sensor and the second temperature sensor are installed in the corresponding room and connected with the temperature controller, respectively. The temperature controller controls the three-way valve two. The air conditioning mode formed by the heat pump and the fresh air dehumidification mechanism in the device is relatively single, and the regulation and control effect needs to be improved. In addition, the filter system of most air conditioning modes is only composed of filter units of different devices. The impurities entering the system will increase the cleaning frequency of the corresponding devices, and affect the operation efficiency of the entire device. SUMMARY

[0005] The present application aims at the technical problems of the above-mentioned air conditioning system, and provides a radiation convection composite air conditioning system for passive house, which is reasonable in design, diversified in mode, beneficial to reducing cost and improving air conditioning response efficiency.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the present application provides a radiation and convection combined air conditioning system for passive house, which comprises an air source heat pump and a fresh air dehumidification integrated machine, the energy using side of the air source heat pump is provided with a distribution water collector and a plurality of capillary tube networks, the fresh air dehumidification integrated machine comprises a box body, the box body is provided with a fresh air inlet, an exhaust air outlet and a return air inlet, the box body is provided with a filtering section, an exhaust air section, a heat recovery section, a return air bin, a supply air bin, a heat exchange section, a condensation reheating section, a supply air section, an electric control section and a compressor, the output end of the supply air bin is provided with a supply air pipe, the supply air pipe is provided with a plurality of branches, and each branch is provided with an electric air valve and a temperature controller, the temperature controller is electrically connected with the distribution water collector, the fresh air dehumidification integrated machine is electrically connected with the air source heat pump, the energy using side of the air source heat pump is further provided with a plurality of geothermal coil pipes, the geothermal coil pipes are connected with the distribution water collector, the heat exchange section is connected with the air source heat pump in a circulation mode, a bypass pipeline is arranged between the filtering section and the heat recovery section, the output end of the bypass pipeline is connected with the supply air bin, the bypass pipeline is provided with a bypass valve, a return air valve is arranged between the return air bin and the supply air bin, and the fresh air side of the fresh air dehumidification integrated machine is provided with a quick-release fresh air filtration integrated machine.

[0007] Preferably, the inside of the supply air bin is provided with densely distributed flow guides close to the heat exchange section.

[0008] Preferably, the densely distributed flow guides comprise square plates provided with a plurality of long strip holes distributed in parallel with the side edges of the square plates, the center of each square plate is provided with a flow guide plate provided with a plurality of concentrically distributed flow guide pipe groups, each flow guide pipe group comprises a plurality of circular array distributed flow guide pipes, and the output ends of the flow guide pipes are inclined towards the heat exchange section.

[0009] Preferably, the input ends of the flow guide pipes are bevels, and the flow guide pipes gradually increase in length in an order from outside to inside.

[0010] Preferably, the quick-release fresh air filtration integrated machine is a cylindrical structure comprising a machine top cover, a machine body and a machine base, the machine body is provided with four straight planes connected in sequence to form a four-prism plane, the inside of the machine body is provided with a filtering bin provided with a plurality of filtering plates inserted in sequence, the bottom of the machine body is provided with a wind storage bin in communication with the top of the filtering bin, the machine body is provided with an air inlet connected with the filtering bin through a pipeline, the outside of the machine body is provided with a sealing plate connected in semi-enclosure with the machine body, the sealing plate is a C-shaped structure provided with an air outlet in communication with the wind storage bin, and the machine top cover and the machine base are both provided with C-shaped clamping grooves matched with the sealing plate.

[0011] Preferably, the filter plate is provided with a plurality of filter holes, and the filter hole diameters of different filter plates gradually decrease from bottom to top.

[0012] Preferably, the top of the machine head is provided with a power fan communicating with the filter bin.

[0013] Preferably, the filter plate is provided with a pull plate away from one end of the filter bin, the pull plate is provided with a pull hole, one end of the pull plate facing the filter bin is provided with a sealing groove, and the sealing groove is provided with a sealing gasket.

[0014] Compared with the prior art, the application has the advantages and positive effects that:

[0015] The application provides a radiation and convection composite air conditioning system for a passive house.

[0016] Compared with prior art schemes or similar devices, the application has the following advantages:

[0017] 1. The application can realize a radiation air conditioning mode of ceiling capillary or floor coil + fresh air dehumidification and reheating, a convection air conditioning mode of one-time return air of the whole house, a composite air conditioning mode of ceiling capillary / floor coil + one-time return air, and the operation mode is more flexible, and the regulation and control effect on the whole house is better; the air supply amount of the device is small, the fan noise is reduced; the end air pipe can adopt a smaller specification, the cost is saved, the size of the hole for the air pipe to pass through the beam is reduced, and the safety of the system is improved; the application can realize cold and heat supply with only one heat pump outdoor unit, and the cold and heat source system is simplified; the application expands the function of the fresh air dehumidification system, can bear the indoor cold and heat load, reduces the capillary paving area, reduces the cost, and improves the temperature control response speed; and the application overcomes the problems that the floor coil has a small cooling capacity in summer and the conventional floor coil must be used in combination with the air disc system in summer.

[0018] 2. The fresh air dehumidification all-in-one machine provided by the application realizes heat recovery of part of fresh air and return air in a heat recovery section, and the return air is discharged by an exhaust fan through an exhaust port; another part of fresh air is connected to an air supply bin through a bypass pipeline and a bypass valve, and the bypass valve opening degree can be increased in the transition season to realize the fresh air bypass function, which is beneficial to improving the heat exchange efficiency; and the return air valve can realize fresh air and return air mixed air operation, and improve the indoor air supply effect.

[0019] 3. The quick-release fresh air filter all-in-one machine provided by the application can intercept a large amount of impurities at the front end of the system, avoid the circulation of impurities in the system, and reduce the maintenance frequency of the filter units of other devices in the system; the filter unit, i.e., the filter plate, adopts a quick-release design, and different filter plates can be cleaned online.

[0020] The device has the advantages of reasonable design, simple structure, diversified modes, reduced cost, improved air conditioning response efficiency, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 It is a structural schematic diagram of a radiant convection combined air conditioning system for a passive house.

[0023] Figure 2 It is a structural schematic diagram of a fresh air dehumidification all-in-one machine.

[0024] Figure 3 It is an axonometric view of the densely packed flow director provided in the embodiments.

[0025] Figure 4 It is an axonometric view of the densely packed flow director provided in the embodiments in another direction.

[0026] Figure 5 It is a side view of the densely packed flow director provided in the embodiments.

[0027] Figure 6 It is an axonometric view of the quick-release fresh air filtration all-in-one machine.

[0028] Figure 7 It is an axonometric view of the fuselage.

[0029] Figure 8 It is a longitudinal sectional view of the quick-release fresh air filtration all-in-one machine.

[0030] Figure 9 It is a transverse sectional view of the quick-release fresh air filtration all-in-one machine.

[0031] Figure 10 It is an axonometric view of the sealing plate.

[0032] In the above drawings;

[0033] 1. Air source heat pump;

[0034] 2. Fresh air dehumidification all-in-one machine; 21, box body; 21a, fresh air inlet; 21b, exhaust air outlet; 21c, return air inlet; 22, filtration section; 23, exhaust air section; 24, heat recovery section; 25, return air bin; 26, supply air bin; 27, heat exchange section; 28, condensation reheating section; 29, supply air section; 210, electric control section; 211, compressor; 212, supply air pipe; 213, bypass valve; 214, return air valve;

[0035] 3. Distributing water collector;

[0036] 4. Capillary tube network;

[0037] 5. Electric air valve;

[0038] 6. Thermostat;

[0039] 7. Geothermal coils;

[0040] 8. Quick-release integrated fresh air filter unit; 81. Top cover; 82. Base; 83. Body; 831. Flat surface; 832. Filter compartment; 84. Filter plate; 85. Air storage compartment; 86. Air inlet; 87. Sealing plate; 88. Air outlet; 89. C-shaped slot; 810. Power fan; 811. Pull plate;

[0041] 9. Densely arranged flow guides; 91. Square plate; 92. Long strip holes; 93. Flow guide plate; 94. Flow guide tube assembly. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0043] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0044] Examples, such as Figures 1-10 As shown, the present invention provides a radiant-convection combined air conditioning system for passive houses, including an air source heat pump 1 and a fresh air dehumidifier 2. The air source heat pump 1 is provided with a manifold 3 and several capillary networks 4 on the energy consumption side. The fresh air dehumidifier 2 includes a housing 21, which is provided with a fresh air inlet 21a, an exhaust air outlet 21b, and a return air outlet 21c. The housing 21 is provided with a filter section 22, an exhaust section 23, a heat recovery section 24, a return air chamber 25, a supply air chamber 26, a heat exchange section 27, a condensation reheat section 28, a supply air section 29, an electrical control section 210, and a compressor 211. The output end of the supply air chamber 26 is provided with a supply air duct 212, which is provided with multiple branches, and each branch is provided with an electric air valve 5 and a thermostat 6. The thermostat 6 is electrically connected to the manifold 3. In this embodiment, the capillary network 4 is a capillary radiant network, and the air source heat pump 1, water manifold 3, capillary network 4, electric air valve 5, and thermostat 6 are existing technologies, which will not be described in detail here. In order to improve the control performance of this system, this invention proposes a composite mode control design.

[0045] Specifically, the fresh air dehumidification all-in-one machine 2 is electrically connected with the air source heat pump 1, the energy side of the air source heat pump 1 is further provided with a plurality of geothermal coils 7, the geothermal coils 7 are connected with the distribution header 3, the heat exchange section 27 is circularly connected with the air source heat pump 1, the bypass pipeline is arranged between the filtering section 22 and the heat recovery section 24, the output end of the bypass pipeline is connected with the air supply warehouse 26, the bypass valve 213 is arranged on the bypass pipeline, the return air valve 214 is arranged between the return air warehouse 25 and the air supply warehouse 26, and the fresh air side of the fresh air dehumidification all-in-one machine 2 is provided with the quick-release fresh air filter all-in-one machine 8. The fresh air dehumidification all-in-one machine 2 is circularly connected with the air source heat pump 1, and the capillary tube network 4 and the geothermal coil 7 are connected to the air source heat pump 1 through the distribution header 3. Among them, the fresh air enters from the fresh air port 21a and is filtered through the filtering section 11, a part of the fresh air is subjected to cold and heat exchange with the indoor return air sucked through the return air port 21c and then enters the air supply warehouse 26, and the return air is discharged through the return air port 21b by the exhaust fan; the heat recovery section 24 adopts a high-efficiency heat recovery machine, and the enthalpy efficiency is greater than 70%; another part of the fresh air is connected to the air supply warehouse 26 through the bypass pipeline and the bypass valve 213, the bypass valve 213 opening degree can be increased in the transition season to realize the fresh air bypass function, which is beneficial to improve the heat exchange efficiency; the return air valve 214 can realize the mixed air operation of the fresh air and the return air to improve the indoor air supply effect; a large amount of impurities is intercepted at the front end of the system to avoid the impurities circulating in the system, and the maintenance frequency of the filtering unit of other equipment can be reduced; the filter plate 84 adopts a quick-release design, and different filter plates 84 can be cleaned online.

[0046] The present application can realize multiple modes, such as the ceiling capillary / ground coil + fresh air dehumidification reheating temperature and humidity control radiation air conditioning mode, the whole house once return air convection air conditioning mode and the ceiling capillary or ground coil + once return air, the operation is more flexible, and the control effect on the whole house is better. Compared with the heat pump type fresh air heat recovery cycle control all-in-one machine + once return air system, the air supply amount of the equipment of the present application is smaller, the fan noise is reduced, the end air pipe can also be selected to be smaller in size, the cost is saved, the size of the air pipe hole is reduced, the structural safety is improved, and the ground air supply port can also be used; compared with the heat pump type fresh air cycle control all-in-one machine + air pipe + gas wall-hung stove + floor heating system, the present application can realize cold and heat supply with only one heat pump outdoor unit, and the cold and heat source system is simplified; compared with the conventional ceiling wall capillary radiation air conditioner + fresh air dehumidification system, the function of the fresh air dehumidification system is expanded, the indoor cold and heat load can be borne, the capillary paving area is reduced, the paving difficulty and cost of the capillary tube network 4 are reduced, and the temperature control response speed is improved; the present application can adopt the form of the floor heating coil + once return air air conditioning dehumidification system, and the problems that the ground coil has small cooling capacity in summer and the conventional ground coil must be used in combination with the air pipe system in summer are overcome.

[0047] In order to improve the uniformity and mixing effect of the fresh air and the return air on the output path of the air supply bin 26, the application is provided with the densely distributed flow guide 9 which is distributed close to the heat exchange section 27 inside the air supply bin 26, the pre-cooled / pre-heated fresh air is first distributed and mixed by the densely distributed flow guide 9 and then enters the heat exchange section 27 for heat exchange, which can further improve the heat exchange efficiency of the heat exchange section 27.

[0048] Further, the densely distributed flow guide 9 comprises the square plate 91 which is provided with a plurality of long hole 92 which are distributed in parallel with the side edges of the square plate 91, the center of the square plate 91 is provided with the flow guide plate 93 which is provided with a plurality of concentrically distributed flow guide pipe groups 94, the flow guide pipe group 94 comprises a plurality of circularly arrayed flow guide pipes, the output end of the flow guide pipe is inclined towards the heat exchange section 27. The fresh air which enters the air supply bin 26 from the bypass pipe can first rush to the flow guide plate 93 and the plate surface of the square plate 91, part of the air passes through the long hole 92, and the other part of the air rushes to the heat exchange section 27 under the guidance of the reflux pipe group, especially in the case of mixed operation of the fresh air and the return air, the densely distributed flow guide 9 can also play a certain mixing effect, so that the fresh air and the return air can pass through the heat exchange device in the heat exchange section 27 more uniformly after passing through the flow guide pipe.

[0049] In order to improve the flow guiding effect of the densely distributed flow guide 9 on the fresh air and the return air, the input end of the flow guide pipe is provided with a bevel, and the flow guide pipe gradually becomes longer in the order from outside to inside. The side of the flow guide pipe which faces the air supply bin 26 constitutes a drum surface, so that the fresh air and the return air can move towards different flow guide pipes, the discharge direction of different flow guide pipes is different, which is beneficial to the better mixing of the fresh air and the return air.

[0050] In order to improve the filtering performance of the system front end to the fresh air, the application adopts a large volume quick-release fresh air filtering integrated machine 8 as the main filtering equipment. Specifically, the quick-release fresh air filtering integrated machine 8 is a cylindrical structure and includes a machine top cover 81 and a machine base 82, a machine body 83 is arranged between the machine top cover 81 and the machine base 82, four straight planes 831 connected in sequence to form a four-prism plane are arranged on the side of the machine body 83, a filtering bin 832 is arranged in the inside of the machine body 83, a plurality of filtering plates 84 are arranged in the filtering bin 832 and are inserted in sequence, a wind storage bin 85 is arranged at the bottom of the machine body 83 and is in communication with the top of the filtering bin 832, a wind inlet 88 is arranged on the machine body 83 and is connected to the filtering bin 832 through a pipeline, a sealing plate 87 is arranged outside the machine body 83 and is connected to the machine body 83 in a semi-enclosed manner, the sealing plate 87 is a C-shaped structure and has an air outlet 88 arranged on the side and in communication with the wind storage bin 85, C-shaped clamping grooves 89 are arranged on the machine top cover 81 and the machine base 82 and are matched with the sealing plate 87, and C-shaped pads are arranged in the C-shaped clamping grooves 89 and are matched with the sealing plate 87 to ensure the sealing performance of the wind storage space. The cylindrical cavity formed between the straight planes 831 and the sealing plate 87 and the wind storage bin 85 form a large wind storage space; the fresh air enters the filtering bin 832 from the bottom to the top through the wind inlet 88 and passes through the filtering plates 84 in sequence, the filtering plates 84 are inserted and filter the fresh air layer by layer, the filtered fresh air is first stored in the wind storage space, the pure fresh air is continuously provided to the system in the working state, and most of the impurities are retained in the front end of the system, i.e. the quick-release fresh air filtering integrated machine 8. The filtering plates 84 and the machine body 83 are designed in a quick-release manner, so that different filtering plates 84 can be cleaned online.

[0051] Further, a plurality of filtering holes are arranged on the filtering plates 84, and the filtering hole diameters of different filtering plates 84 gradually decrease in sequence from bottom to top. The filtering plates 84 with gradually increased filtering mesh can ensure the orderly flow of the fresh air and achieve the filtering purpose.

[0052] In order to improve the flow efficiency of the fresh air, a power fan 810 is arranged on the top of the machine top cover 81 and is in communication with the filtering bin 832. The power fan 810 can promote the flow of the fresh air to the wind storage space, especially can make the fresh air pass through the filtering plates 84 layer by layer to achieve filtering, and make the wind storage space continuously provide pure fresh air to the system in the working state.

[0053] In order to facilitate the pulling of the filtering plates 84, a pull plate 811 with a size larger than that of the filtering plates 84 is arranged at the end of the filtering plates 84 away from the filtering bin 832, and a pull hole for manual pulling by workers is arranged on the pull plate 811. In addition to the large side surface of the pull plate 811 forming a continuous sealing plane with the adjacent filtering bin 832, a sealing groove is arranged at the end of the pull plate 811 facing the filtering bin 832, and a sealing pad is arranged in the sealing groove to further ensure the filtering effect of the filtering bin 832.

[0054] The above merely provides the preferred embodiment of the present application, and is not intended to limit the present application to other forms. Any person skilled in the art can make modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application shall be defined and protected by the appended claims.

Claims

1. A radiant-convection combined air conditioning system for a passive house, comprising an air source heat pump and a fresh air dehumidifier, wherein the energy-consuming side of the air source heat pump is provided with a manifold and several capillary networks, and the fresh air dehumidifier includes a housing, wherein the housing is provided with a fresh air inlet, an exhaust air inlet, and a return air inlet, and wherein the housing is provided with a filter section, an exhaust section, a heat recovery section, a return air chamber, a supply air chamber, a heat exchange section, a condensation-reheat section, a supply air section, an electrical control section, and a compressor, wherein the output end of the supply air chamber is provided with a supply air duct, the supply air duct is provided with multiple branches, and each branch is provided with an electric damper and a thermostat, wherein the thermostat is electrically connected to the manifold, characterized in that, The integrated fresh air dehumidifier is electrically connected to an air source heat pump. The energy-consuming side of the air source heat pump is equipped with several geothermal coils, which are connected to a manifold. The heat exchange section is circulatedly connected to the air source heat pump. A bypass pipe is provided between the filtration section and the heat recovery section. The output end of the bypass pipe is connected to the air supply chamber. A bypass valve is installed on the bypass pipe. A return air valve is installed between the return air chamber and the air supply chamber. A quick-release integrated fresh air filter is installed on the fresh air side of the integrated fresh air dehumidifier. The air supply chamber contains a filter located near the heat exchanger. The system comprises a densely distributed flow guide; the flow guide includes a square plate with multiple elongated holes parallel to its sides, a flow guide plate at the center of the square plate, and multiple concentrically distributed flow guide tube groups on the flow guide plate, each flow guide tube group comprising multiple flow guide tubes arranged in a circular array, the output ends of the flow guide tubes inclined towards the heat exchange section; the input ends of the flow guide tubes are beveled, and the flow guide tubes gradually increase in length from the outside to the inside, with the side of the flow guide tube facing the air supply chamber having a drum surface, allowing fresh air and return air to move towards different flow guide tubes.

2. A radiant-convection combined air conditioning system for passive houses according to claim 1, characterized in that, The quick-release integrated fresh air filter unit has a cylindrical structure and includes a top cover and a base. A body is located between the top cover and the base. The side of the body has four straight planes connected in sequence to form a quadrangular prism. Inside the body is a filter chamber containing multiple filter plates that are sequentially inserted into it. At the bottom of the body is an air storage chamber connected to the top of the filter chamber. The body has an air inlet connected to the filter chamber via a pipe. The exterior of the body has a sealing plate that partially surrounds and connects to it. The sealing plate has a C-shaped structure and an air outlet on its side that communicates with the air storage chamber. Both the top cover and the base have C-shaped slots that mate with the sealing plate.

3. A radiant-convection combined air conditioning system for passive houses according to claim 2, characterized in that, The filter plate is provided with a number of filter holes, and the diameter of the filter holes of different filter plates gradually decreases from bottom to top.

4. A radiant-convection combined air conditioning system for passive houses according to claim 3, characterized in that, The top of the machine cover is equipped with a power fan that communicates with the filter chamber.

5. A radiant-convection combined air conditioning system for passive houses according to claim 4, characterized in that, The filter plate is provided with a pull plate at the end away from the filter chamber, the pull plate is provided with a pull hole, and the pull plate is provided with a sealing groove at the end facing the filter chamber, and a sealing gasket is provided in the sealing groove.

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