CN215062400U - Fresh air conditioning system - Google Patents
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- CN215062400U CN215062400U CN202121377224.6U CN202121377224U CN215062400U CN 215062400 U CN215062400 U CN 215062400U CN 202121377224 U CN202121377224 U CN 202121377224U CN 215062400 U CN215062400 U CN 215062400U
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Abstract
The utility model provides a new trend air conditioning system, wherein new trend air conditioning system, which comprises a compressor, first outdoor heat exchanger, the outdoor heat exchanger of second, indoor heat exchanger, the cross valve, the three-way valve, first throttling element, second throttling element, the first mouth of cross valve is connected with the gas vent of compressor with the first mouth of three-way valve, indoor heat exchanger has connected gradually between the second mouth of three-way valve and the second mouth of cross valve, first throttling element, the outdoor heat exchanger of second, second throttling element has connected gradually between the fourth mouth of the one end that first throttling element is connected with the outdoor heat exchanger of second and cross valve, first outdoor heat exchanger, the third mouth of three-way valve and the third mouth of cross valve and the induction port connection of compressor, the new trend is introduced indoor through first outdoor heat exchanger. According to the utility model discloses, the new trend is by the precooling or preheat via first outdoor heat exchanger before being introduced the interior space, effectively reduces the new trend and introduces the unfavorable undulant of bringing for the temperature of interior space.
Description
Technical Field
The utility model belongs to the technical field of air conditioning, concretely relates to new trend air conditioning system.
Background
The problem of higher energy consumption exists when the air conditioner is used for refrigeration only, if a natural cold source can be utilized, the air conditioner and ventilation are combined under certain conditions, the load of the air conditioner can be reduced, the purpose of energy conservation is realized, and the quality of indoor air can be improved.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a fresh air conditioning system, outdoor fresh air is via first outdoor heat exchanger by the precooling or preheat before being introduced into the interior space, effectively reduces the unfavorable undulant that the temperature that the new trend introduced and brought for the interior space.
In order to solve the problems, the utility model provides a fresh air conditioning system, which comprises a compressor, a first outdoor heat exchanger, a second outdoor heat exchanger, an indoor heat exchanger, a four-way valve, a three-way valve, a first throttling element and a second throttling element, a first port of the four-way valve and a first port of the three-way valve are connected with an exhaust port of the compressor, the indoor heat exchanger, the first throttling element and the second outdoor heat exchanger are sequentially connected between the second port of the three-way valve and the second port of the four-way valve, one end of the first throttling element, which is connected with the second outdoor heat exchanger, is a first end, the second throttling element and the first outdoor heat exchanger are sequentially connected between the first end and a fourth port of the four-way valve, and the third port of the three-way valve and the third port of the four-way valve are connected with the air suction port of the compressor, and outdoor fresh air can be introduced into an indoor space through the first outdoor heat exchanger.
Preferably, when the operation mode of the fresh air conditioning system is a refrigeration mode, the first port and the second port of the four-way valve are communicated, the third port and the fourth port of the four-way valve are communicated, and the second port and the third port of the three-way valve are communicated; alternatively, the first and second electrodes may be,
when the operation mode of the fresh air conditioning system is a heating mode, a first port and a fourth port of the four-way valve are communicated, a second port and a third port of the four-way valve are communicated, and a first port and a second port of the three-way valve are communicated; alternatively, the first and second electrodes may be,
when the operation mode of the fresh air conditioning system is a defrosting mode, the first port and the second port of the four-way valve are communicated, the third port and the fourth port of the four-way valve are communicated, and the first port and the second port of the three-way valve are communicated.
Preferably, the first outdoor heat exchanger is arranged in a fresh air shell, a fresh air introducing channel is constructed on the fresh air shell, the fresh air introducing channel is arranged on the air outlet side of the first outdoor heat exchanger, and outdoor fresh air enters the indoor space through the fresh air introducing channel.
Preferably, be constructed on the new trend inlet channel with the new trend export of indoor space intercommunication, with the air exit of outdoor space intercommunication, still be equipped with the air door in the new trend inlet channel, the air door can be by controlled motion in order to shutoff any one in new trend export, the air exit.
Preferably, the fresh air outlet is provided with a first humidifying device.
Preferably, the first humidifying device comprises a first wet film, a spraying assembly and a water storage part, wherein the water storage part is positioned below the first wet film.
Preferably, the spray assembly comprises a water pump and a spray pipe above the first wet film, the water pump being capable of pumping water from the water storage part into the spray pipe.
Preferably, a second humidifying device is arranged on the air inlet side of the first outdoor heat exchanger; and/or a fresh air driving fan is further arranged on the air inlet side of the first outdoor heat exchanger.
Preferably, the second humidifying device comprises a second wet film and a water pan located below the second wet film, wherein the water pan is used for receiving defrosting water of the second outdoor heat exchanger, and the second wet film can adsorb the defrosting water.
Preferably, the compressor, the second outdoor heat exchanger, the four-way valve, the three-way valve, the first throttling element and the second throttling element are located in an outdoor casing, and the fresh air shell is located below the outdoor casing.
Preferably, the first throttling element is in an outdoor environment.
The utility model provides a pair of new trend air conditioning system, outdoor new trend is introduced the interior space before by the precooling or preheat via first outdoor heat exchanger, can also effectively reduce the unfavorable undulant that the temperature brought for the interior space was introduced to the new trend when promoting the quality of room air.
Drawings
Fig. 1 is a schematic diagram of a fresh air conditioning system according to an embodiment of the present invention;
fig. 2 is a schematic view of a refrigerant flow direction of the fresh air conditioning system in fig. 1 in a cooling mode (in the figure, a hollow arrow shows the refrigerant flow direction, and a solid arrow shows the fresh air flow direction);
fig. 3 is a schematic diagram of a refrigerant flow direction of the fresh air conditioning system in fig. 1 in a heating mode (in the figure, a hollow arrow shows the refrigerant flow direction, and a solid arrow shows the fresh air flow direction);
fig. 4 is a schematic view of a refrigerant flow direction of the fresh air conditioning system in fig. 1 in a defrosting mode (a hollow arrow in the figure shows the refrigerant flow direction, and a solid arrow shows the fresh air flow direction);
fig. 5 is a schematic view of a fresh air conditioning system according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of the fresh air device in FIG. 1;
FIG. 7 is a schematic view of the assembly of the fresh air device with the outdoor unit of the air conditioning system;
FIG. 8 is a schematic structural diagram of the first humidifying device in FIG. 1;
FIG. 9 is a left side view of FIG. 8;
fig. 10 is a schematic control flow diagram of a control method of a fresh air conditioning system according to an embodiment of the present invention.
The reference numerals are represented as:
1. a compressor; 21. a first outdoor heat exchanger; 22. a second outdoor heat exchanger; 3. an indoor heat exchanger; 41. a four-way valve; 42. a three-way valve; 51. a first throttling element; 52. a second throttling element; 6. a first humidifying device; 61. a first wet film; 62. a spray assembly; 621. a shower pipe; 622. a water pump; 63. a water storage part; 7. a second humidifying device; 71. a second wet film; 72. a water pan; 8. driving a fan by fresh air; 81. a filter screen; 100. an outdoor enclosure; 200. a fresh air shell; 201. a fresh air introduction channel; 202. a fresh air outlet; 203. an air outlet; 204. a damper.
Detailed Description
Referring to fig. 1 to 10 in combination, according to an embodiment of the present invention, a fresh air conditioning system is provided, including a compressor 1, a first outdoor heat exchanger 21, a second outdoor heat exchanger 22, an indoor heat exchanger 3, a four-way valve 41, a three-way valve 42, a first throttling element 51, and a second throttling element 52, a first port of the four-way valve 41 and a first port of the three-way valve 42 are connected to an exhaust port of the compressor 1, the indoor heat exchanger 3, the first throttling element 51, and the second outdoor heat exchanger 22 are sequentially connected between a second port of the three-way valve 42 and a second port of the four-way valve 41, an end of the first throttling element 51 connected to the second outdoor heat exchanger 22 is a first end, the second throttling element 52, the first outdoor heat exchanger 21 are sequentially connected between the first end and a fourth port of the four-way valve 41, a third port of the three-way valve 42 and a third port of the four-way valve 41 are connected to an air suction port of the compressor 1 Outdoor fresh air can be introduced into the indoor space via the first outdoor heat exchanger 21. Among this technical scheme, outdoor new trend is precooled or is preheated through first outdoor heat exchanger before being introduced into the indoor space, can also effectively reduce the unfavorable undulant that the temperature that the new trend introduced and brings for the indoor space when promoting the quality of indoor air.
Specifically, for example, when the operation mode of the fresh air conditioning system is a refrigeration mode, a first port of the four-way valve 41 is communicated with a second port, a third port of the four-way valve 41 is communicated with a fourth port, and a second port of the three-way valve 42 is communicated with the third port, as shown in fig. 2, at this time, the first outdoor heat exchanger 21 and the indoor heat exchanger 3 serve as evaporators, the second outdoor heat exchanger 22 serves as a condenser, and when fresh air is introduced correspondingly, the fresh air is introduced after being precooled at the first outdoor heat exchanger 21; or, when the operation mode of the fresh air conditioning system is a heating mode, the first port and the fourth port of the four-way valve 41 are communicated, the second port and the third port are communicated, and the first port and the second port of the three-way valve 42 are communicated, as shown in fig. 3, at this time, the first outdoor heat exchanger 21 and the indoor heat exchanger 3 serve as condensers, the second outdoor heat exchanger 22 serves as an evaporator, and when fresh air is introduced correspondingly, the fresh air is introduced after being preheated at the first outdoor heat exchanger 21; or, when the operation mode of the fresh air conditioning system is a defrosting mode, the first port and the second port of the four-way valve are communicated, the third port and the fourth port are communicated, and the first port and the second port of the three-way valve 42 are communicated, as shown in fig. 4, at this time, the second outdoor heat exchanger 22 and the indoor heat exchanger 3 serve as condensers, and the first outdoor heat exchanger 21 serves as an evaporator, fresh air is not introduced in the operation mode, and the indoor space is continuously heated in the defrosting process (i.e., indoor continuous heat supply can be realized in the defrosting process in winter), so that the heating comfort is improved.
In some embodiments, the first outdoor heat exchanger 21 is located in a fresh air casing 200, a fresh air introducing channel 201 is configured on the fresh air casing 200, the fresh air introducing channel 201 is located on an air outlet side of the first outdoor heat exchanger 21, and the outdoor fresh air enters the indoor space through the fresh air introducing channel 201. In this technical scheme, the first outdoor heat exchanger 21 is located in the fresh air casing 200, that is, it is independent of the outdoor cabinet 100 and exists alone, so that the first outdoor heat exchanger 21 and the fresh air casing 200 form a fresh air device together, and thus the fresh air device can exist as a component and can be flexibly installed according to an actual installation space.
In some embodiments, the fresh air introducing channel 201 is configured with a fresh air outlet 202 communicated with the indoor space and an air outlet 203 communicated with the outdoor space, the fresh air introducing channel 201 is further provided with an air door 204 therein, and the air door 204 can be controlled to move to block any one of the fresh air outlet 202 and the air outlet 203. Specifically, in the process that the fresh air conditioning system is in a heating mode or a cooling mode, when fresh air needs to be introduced into an indoor space, the air door 204 is controlled to close the air outlet 203 and open the fresh air outlet 202, so that the synchronous introduction of the fresh air is realized; and in the process that the fresh air conditioning system is in the defrosting mode, the air door 204 is controlled to open the air outlet 203 and close the fresh air outlet 202, so that the fresh air refrigerated by the first outdoor heat exchanger 21 is prevented from entering the indoor space to reduce the indoor temperature.
In some embodiments, the fresh air outlet 202 is provided with the first humidification device 6, and the first humidification device 6 is disposed at the fresh air outlet 202, so that on one hand, the introduced fresh air can be humidified in winter, and on the other hand, the temperature of the introduced fresh air can be reduced by evaporative cooling of a water body in summer and transition seasons (spring and autumn), thereby reducing the heat load of an indoor space, reducing the starting operation time of an air conditioning system, and achieving the purpose of reducing energy consumption.
Preferably, the first humidification device 6 is disposed at a position corresponding to the indoor side of the fresh air outlet 202, so as to facilitate the water injection of the first humidification device 6 by the user. As a specific implementation manner, the first humidification device 6 includes a first wet film 61, a spraying assembly 62, and a water storage part 63, wherein the water storage part 63 is located below the first wet film 61, so as to collect water sprayed by the spraying assembly 62 for reuse. The spray assembly 62 includes a water pump 622 and a spray pipe 621 above the first wet film 61, the water pump 622 being capable of pumping water from the water storage part 63 into the spray pipe 621. A corresponding water level switch is arranged in the water storage part 63 so as to detect the water level therein and guide a user to inject water in time; the water storage part 63 is also provided with an overflow pipe for overflowing excessive water.
In some embodiments, the second humidification device 7 is disposed on the air inlet side of the first outdoor heat exchanger 21, and specifically, the second humidification device 7 includes a second wet film 71 and a water receiving tray 72 disposed below the second wet film 71, wherein the water receiving tray 72 is configured to receive defrosting water of the second outdoor heat exchanger 22, the second wet film 71 can absorb the defrosting water, so as to collect the defrosting water during defrosting in winter by the second outdoor heat exchanger 22 to humidify fresh outdoor air, and the defrosting water does not need to be discharged, so as to avoid water pipe rupture due to icing, it is emphasized that, in order to prevent the temperature of the fresh outdoor air after passing through the second wet film 71 from being too low, the second humidification device 7 in the present invention is disposed on the air inlet side of the first outdoor heat exchanger 21, so as to be able to enter the indoor space after being preheated after the fresh outdoor air is humidified, the comfort of indoor personnel is guaranteed.
Outdoor new trend relies on new trend driving fan 8 to form mobile power, and is best, new trend driving fan 8 sets up the air inlet side of first outdoor heat exchanger 21, new trend driving fan 8 specifically can be centrifugal fan, and is best, and its air intake is equipped with filter screen 81.
Preferably, the first throttling element 51 is located in an outdoor environment, at this time, a schematic diagram of the fresh air conditioning system is as shown in fig. 5, in the related art, based on precise control of the refrigerant flow, the first throttling element 51 is mostly installed on an indoor side, but the volume of an indoor unit is increased, and throttling noise is generated.
It can be understood that the compressor 1, the second outdoor heat exchanger 22, the four-way valve 41, the three-way valve 42, the first throttling element 51 and the second throttling element 52 are all located in the outdoor casing 100, at this time, the fresh air shell 200 is located below the outdoor casing 100, and the water receiving tray 72 is arranged corresponding to the area below the second outdoor heat exchanger 22, so that the defrosting water formed when the second outdoor heat exchanger 22 is defrosted can flow into the water receiving tray 72 by gravity, and the defrosting water can be utilized conveniently. In some cases, the fresh air casing 200 may also be located above the outdoor enclosure 100, and the formed defrosting water needs to be pumped and transferred by a power device such as a water pump.
According to the utility model discloses an embodiment still provides a new trend air conditioning system's control method, new trend air conditioning system is foretell new trend air conditioning system, including following step:
judging whether the heating condition is met (the specific heating condition is the same as that of a conventional air conditioner, such as Ts-Tn is more than or equal to 1 ℃, Tw is less than or equal to 30 ℃, Tw is outdoor real-time temperature, Tn is indoor real-time temperature, Ts is user set temperature, and certainly other judging conditions can be adopted, the utility model is not limited particularly);
when the heating condition is not met, acquiring the air moisture content dw and the enthalpy Hw of the outdoor space, and setting the air moisture content ds and the enthalpy Hs by a user;
judging the size relationship between dw and ds and the size relationship between Hw and Hs;
and controlling the fresh air conditioning system to enter different operation modes according to the size relation.
In the technical scheme, when the fresh air conditioning device meets heating conditions, the relationship between the air moisture content and the enthalpy value of the outdoor space and the set air moisture content and enthalpy value is further judged, and the fresh air conditioning system is controlled to enter different operation modes according to the respective magnitude relationship, so that outdoor fresh air can be introduced indoors when the moisture content and the enthalpy value meet a certain relationship, the indoor heat load (dehumidification and cooling) is reduced, the starting operation time of the air conditioning system is further reduced, and the purposes of saving energy and reducing consumption are achieved.
Specifically, when dw is larger than or equal to ds, it indicates that the air moisture content of the outdoor environment is higher, at this time, if fresh air is introduced, heat/humidity coincidence of an indoor space is aggravated, which causes disadvantages for temperature regulation and is not beneficial to energy saving, so that the fresh air conditioning system can be directly controlled to operate in a refrigeration mode, in the process of operating in the refrigeration mode of the fresh air conditioning system, when the first humidifying device 6 is included and the indoor space needs to be humidified, the first humidifying device 6 is controlled to operate for humidification, and the humidity of the indoor air conditioner is improved, so that the comfort of a user is improved;
when dw is less than ds and Hw is less than Hs, the operation ventilation mode of the fresh air conditioning system is controlled, a fresh air driving fan 8 which is arranged corresponding to the first outdoor heat exchanger 21 is controlled to generate a second air volume, the second air volume is greater than the first air volume, the fresh air moisture content and enthalpy value of the outdoor space are both less than corresponding set values, and the outdoor fresh air can be introduced into the indoor space, so that the heat/humidity load of the indoor space is reduced, the starting operation time of the air conditioning system is reduced, and the purpose of reducing energy consumption is achieved; in the process of the operation ventilation mode of the fresh air conditioning system, detecting the indoor real-time temperature Tn and the indoor real-time humidity RHn and acquiring the corresponding indoor moisture content dn, when the difference between Tn, RHn and dn and the difference between Ts, RHs and ds respectively exceed the corresponding preset difference (the corresponding judgment means is known in the industry and is not particularly limited), controlling the fresh air to drive the fan 8 to adjust the air volume, and controlling the first humidifying device 6 to operate and humidify (namely controlling the spraying pipe 621 to spray water onto the first wet film 61), so that the fresh air can flow through the wet film before entering the indoor space, and further, the evaporative cooling of the introduced fresh air is realized.
When dw is less than ds and Hw is more than or equal to Hs, namely the moisture content of the fresh air outdoors is lower than the moisture content of the set air, but the outdoor air enthalpy value is not lower than the set air enthalpy value, whether (Tw-Ts) × 1.005)/((ds-dw) × 2.5) is less than eta is further judged, wherein eta is the multiple of the sensible heat removal efficiency and the latent heat removal efficiency of the fresh air conditioning system (eta can be calculated according to unit test data and is usually 2-3), when (Tw-Ts) × 1.005)/((ds-dw) × 2.5) < η, the fresh air conditioning system is controlled to operate a ventilation and dehumidification mode, namely, the humidity in the indoor space is reduced by utilizing the higher enthalpy value of outdoor air, therefore, the aim of reducing energy consumption is achieved, and when the value of (Tw-Ts) × 1.005)/((ds-dw) × 2.5) > is larger than or equal to eta, the fresh air conditioning system is controlled to operate in a refrigeration mode.
In some embodiments, the air moisture content dw and the enthalpy Hw of the outdoor space, the set air moisture content ds and the set enthalpy Hs of the user are obtained by:
obtain set temperature Ts, set humidity RHs, outdoor real-time temperature Tw, outdoor real-time humidity RHw, based on set temperature Ts, set humidity RHs calculate and obtain user's set air moisture content ds and enthalpy value Hs, based on outdoor real-time temperature Tw, outdoor real-time humidity RHw calculate and obtain outdoor space's air moisture content dw and enthalpy value Hw, and specific calculation mode is then current, the utility model discloses do not do it and specially limit.
In some embodiments, during the cooling mode of the fresh air conditioning system, when fresh air needs to be introduced (the specific determination method may be a general method, for example, a corresponding air quality sensor is provided to detect the indoor air quality, and when the specific determination method is lower than a preset quality threshold, it is determined that fresh air needs to be introduced, as a conventional detection means in the industry, the present invention does not specifically limit the specific determination method), the fresh air driving fan 8 corresponding to the first outdoor heat exchanger 21 is controlled to generate a first air volume to introduce outdoor fresh air into the indoor space, for example, the first air volume is (1-2) room volume/h or 30m room volume3H.human; alternatively, the first and second electrodes may be,
in the new trend air conditioning system operation ventilation dehumidification mode in-process, when needs ventilation dehumidification (for example detect indoor real-time humidity RHn and acquire corresponding indoor moisture content dn to with RHn, dn respectively with the difference of RHS, ds, work as when the difference exceeds corresponding predetermined difference, as industry conventional technical means, the utility model discloses do not carry out the special limitation to it), control with the new trend drive fan 8 that first outdoor heat exchanger 21 corresponds the setting produces the second amount of wind, for example, the second amount of wind ═ 3 ~ 5 room volume. Preferably, the second air volume is greater than the first air volume, that is, a smaller air volume is introduced to prevent adverse fluctuation of indoor temperature under the requirement based on air quality alone, and a larger air volume is introduced to reduce indoor heat/humidity load, so that the indoor air can be cooled/dehumidified by using outdoor low-humidity air, and the purposes of saving energy and reducing consumption are achieved.
When the heating condition is met, controlling the fresh air conditioning system to operate a heating mode;
in the heating mode operation process, when fresh air needs to be introduced, the fresh air driving fan 8 corresponding to the first outdoor heat exchanger 21 is controlled to generate a first air volume (as described above) so as to introduce outdoor fresh air into an indoor space; alternatively, the first and second electrodes may be,
in the heating mode operation process, when the first humidifying device 6 is included and the indoor space needs to be humidified (as described above), controlling the first humidifying device 6 to operate for humidification; alternatively, the first and second electrodes may be,
in the heating mode operation process, when needs (right the second outdoor heat exchanger 22) defrosting (defrosting is the automatic control condition, with conventional air conditioner, specifically if Tw is less than or equal to 5 ℃ under the condition, the compressor accumulative operation is after 3 hours, satisfies certain condition and gets into defrosting, or when heating time continuous operation exceeds 45 minutes, or accumulative operation exceeds 90 minutes, satisfies certain condition and gets into defrosting, the utility model discloses do not do it and specially limit), control fresh air conditioning system operation defrosting mode when constructing fresh air export 202, air exit 203 on new trend inlet channel 201 and new trend inlet channel 201, simultaneous control fresh air export 202 is closed, air exit 203 is opened.
It should be noted that, the moisture content d and the enthalpy H are calculated according to the temperature and humidity, the moisture content is the absolute value of the water content in the air (g/kg dry air), the relative humidity is the relative value, and the calculation method is well known in the industry; the difference and the effect of the small air volume (the first air volume) fresh air and the large air volume (the second air volume) fresh air are as follows: small volume ventilation for indoor air quality problems, e.g. CO2When the concentration of pollutants exceeds the standard, the concentration is preset air volume, and the air volume can be (1-2) × room volume/h or 30m3/h per person; big amount of wind ventilation mainly used reduces indoor heat and humidity load, also send the new trend to indoor cooling or dehumidification, this time needs the amount of wind enough big just useful, and initial amount of wind is for predetermineeing, then can carry out air regulation according to operating condition, and the amount of wind is preferred (3 ~ 5) room volume this moment.
The control method of the present invention is further explained with reference to fig. 10 as follows:
(1) and starting the computer.
(2) And reading the set temperature and humidity or default set values (Ts, RHs) of the user, the outdoor temperature and humidity (Tw, RHW) and the indoor temperature and humidity (Tn, RHn).
(3) And comparing the indoor and outdoor temperatures to judge whether the heating condition is met. If the requirement is met, the heating cycle shown in the attached figure 3 is started, and when fresh air is needed (user instructions can be obtained or automatic control can be carried out, wherein the automatic control can be carried out according to indoor CO2Automatically opening when the concentration exceeds a certain value), and opening small air volume ventilation (for example, the air volume is (1-2) × room volume/h or 30m 3/h. people); when humidification is needed (for example, RHn is less than RHs), a fan of the ventilation device, a water injection valve of the humidification device and a water pump are started; when defrosting is needed, the defrosting cycle shown in figure 4 is entered.
(4) If the heating condition is not met, the moisture content (dw) and the enthalpy (Hw) of the outdoor air are calculated according to the outdoor temperature and humidity through a built-in program, and the set moisture content (ds) and the enthalpy (Hw) are calculated according to the set temperature and humidity.
(5) If dw is larger than or equal to ds, directly operating the refrigeration cycle shown in the figure 2, operating a compressor control program according to the relation between Ts and Tn and RHS and RHN, and starting small air volume ventilation (such as (1-2) room volume or 30m 3/h. people) when fresh air is needed.
(6) If dw is less than ds, further judging whether Hw is less than Hs, if yes, conducting ventilation or ventilation humidification (if RHn is less than RHS) with large air volume (if air volume is (3-5) × room volume), comparing difference values of indoor temperature, humidity and moisture content (Tn, RHn, dn) and set temperature, humidity and moisture content (Ts, RHS, ds), adjusting ventilation air volume, and opening a water injection valve and a water pump as required.
(7) If Hw ≧ Hs, then further judgment is made as (Tw-Ts) × 1.005)/((ds-dw) × 2.5) < η? If the condition is met, large-air-volume ventilation dehumidification is carried out, and the ventilation air volume is adjusted by comparing the difference value between the indoor humidity (RHn) and/or the indoor moisture content (dn) and the set humidity (RHs) and/or the indoor moisture content (dn). If the condition is not met, the compressor is refrigerated, and a compressor control program is pressed to operate (small air volume ventilation is started when fresh air is needed) according to the relation between Ts and Tn and the relation between RHS and RHN.
(8) And (3) running each mode according to preset time, running a shutdown program if a user shuts down, and re-entering the step (2) if the user does not shut down until shutdown.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. The fresh air conditioning system is characterized by comprising a compressor (1), a first outdoor heat exchanger (21), a second outdoor heat exchanger (22), an indoor heat exchanger (3), a four-way valve (41), a three-way valve (42), a first throttling element (51) and a second throttling element (52), wherein a first port of the four-way valve (41) is connected with a first port of the three-way valve (42) and an exhaust port of the compressor (1), the indoor heat exchanger (3), the first throttling element (51) and the second outdoor heat exchanger (22) are sequentially connected between a second port of the three-way valve (42) and a second port of the four-way valve (41), one end of the first throttling element (51) connected with the second outdoor heat exchanger (22) is a first end, and the second throttling element (52) and the fourth port of the four-way valve (41) are sequentially connected between the first end and the fourth port of the four-way valve (41), And a first outdoor heat exchanger (21), wherein a third port of the three-way valve (42) and a third port of the four-way valve (41) are connected with a suction port of the compressor (1), and outdoor fresh air can be introduced into an indoor space through the first outdoor heat exchanger (21).
2. The fresh air conditioning system as claimed in claim 1, wherein when the operation mode of the fresh air conditioning system is a cooling mode, the first port and the second port of the four-way valve (41) are communicated, the third port and the fourth port are communicated, and the second port and the third port of the three-way valve (42) are communicated; alternatively, the first and second electrodes may be,
when the operation mode of the fresh air conditioning system is a heating mode, a first port and a fourth port of the four-way valve (41) are communicated, a second port and a third port of the four-way valve are communicated, and a first port and a second port of the three-way valve (42) are communicated; alternatively, the first and second electrodes may be,
when the operation mode of the fresh air conditioning system is a defrosting mode, a first port of the four-way valve is communicated with a second port, a third port of the four-way valve is communicated with a fourth port, and a first port of the three-way valve (42) is communicated with the second port.
3. The fresh air conditioning system according to claim 1, wherein the first outdoor heat exchanger (21) is disposed in a fresh air housing (200), a fresh air introducing channel (201) is configured on the fresh air housing (200), the fresh air introducing channel (201) is disposed on an air outlet side of the first outdoor heat exchanger (21), and the outdoor fresh air enters the indoor space through the fresh air introducing channel (201).
4. The fresh air conditioning system according to claim 3, wherein the fresh air introducing channel (201) is configured with a fresh air outlet (202) communicated with the indoor space and an air outlet (203) communicated with the outdoor space, an air door (204) is further arranged in the fresh air introducing channel (201), and the air door (204) can be controlled to move to block any one of the fresh air outlet (202) and the air outlet (203).
5. Fresh air conditioning system according to claim 4, wherein a first humidifying device (6) is arranged at the fresh air outlet (202).
6. Fresh air conditioning system according to claim 5, wherein the first humidifying device (6) comprises a first wet membrane (61), a spray assembly (62), a water storage part (63), wherein the water storage part (63) is below the first wet membrane (61).
7. Fresh air conditioning system according to claim 6, wherein the spray assembly (62) comprises a water pump (622) and a spray pipe (621) above the first wet film (61), the water pump (622) being able to pump water from the water storage part (63) into the spray pipe (621).
8. Fresh air conditioning system according to claim 3, wherein the air inlet side of the first outdoor heat exchanger (21) is provided with a second humidifying device (7); and/or a fresh air driving fan (8) is arranged on the air inlet side of the first outdoor heat exchanger (21).
9. Fresh air conditioning system according to claim 8, wherein the second humidifying device (7) comprises a second wet film (71) and a water receiving tray (72) below the second wet film (71), wherein the water receiving tray (72) is used for receiving defrosting water of the second outdoor heat exchanger (22), and the second wet film (71) can adsorb the defrosting water.
10. Fresh air conditioning system according to claim 3, wherein the compressor (1), the second outdoor heat exchanger (22), the four-way valve (41), the three-way valve (42), the first throttling element (51) and the second throttling element (52) are located in an outdoor cabinet (100), and the fresh air housing (200) is located below the outdoor cabinet (100).
11. Fresh air conditioning system according to claim 1, characterized in that the first throttling element (51) is in an outdoor environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377224.6U CN215062400U (en) | 2021-06-21 | 2021-06-21 | Fresh air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377224.6U CN215062400U (en) | 2021-06-21 | 2021-06-21 | Fresh air conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN215062400U true CN215062400U (en) | 2021-12-07 |
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| CN202121377224.6U Active CN215062400U (en) | 2021-06-21 | 2021-06-21 | Fresh air conditioning system |
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| CN (1) | CN215062400U (en) |
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