CN216281896U - Fresh air equipment - Google Patents
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- CN216281896U CN216281896U CN202122922560.0U CN202122922560U CN216281896U CN 216281896 U CN216281896 U CN 216281896U CN 202122922560 U CN202122922560 U CN 202122922560U CN 216281896 U CN216281896 U CN 216281896U
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Abstract
The utility model discloses a fresh air device, which comprises a fresh air duct, an exhaust air duct, a heat exchange system and a heat pipe circulating system, wherein the heat exchange system comprises a first heat exchange part, a second heat exchange part and a third heat exchange part, and the third heat exchange part and the second heat exchange part are sequentially arranged along the flow direction of fresh air; air in the air exhaust duct exchanges heat with the first heat exchange portion, air in the fresh air duct exchanges heat with the second heat exchange portion and the third heat exchange portion, the heat pipe circulating system comprises a fourth heat exchange portion and a fifth heat exchange portion which are arranged in the fresh air duct, the fifth heat exchange portion is used for cooling and dehumidifying fresh air in the fresh air duct, and the fourth heat exchange portion is used for reheating the fresh air in the fresh air duct. According to the technical scheme, when the fresh air equipment dehumidifies and reheats fresh air, the first heat exchange part recovers cold in the exhaust air duct, and the fifth heat exchange part recovers heat of the fresh air in the fresh air duct, so that energy consumption of the fresh air equipment is further reduced, and the fresh air equipment can operate in an energy-saving mode.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to a fresh air device.
Background
Fresh air equipment is increasingly applied to industrial and civil buildings, and because fresh air load is large, energy consumption of a fresh air unit is large, and therefore energy conservation of the fresh air unit is paid attention.
At present, fresh air equipment mainly uses a heat exchange system to dehumidify and reheat fresh air, but the energy-saving performance of the fresh air during dehumidification and reheat is still lower.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide fresh air equipment and aims to solve the technical problem of low energy-saving performance of the fresh air equipment.
In order to achieve the purpose, the fresh air equipment provided by the utility model comprises a fresh air duct, an exhaust air duct, a heat exchange system and a heat pipe circulating system, wherein the heat exchange system comprises a first heat exchange part, a second heat exchange part and a third heat exchange part, and the third heat exchange part and the second heat exchange part are sequentially arranged in the fresh air duct along the flow direction of fresh air; air in the air exhaust duct exchanges heat with the first heat exchange portion, air in the fresh air duct exchanges heat with the second heat exchange portion and the third heat exchange portion, the heat pipe circulation system comprises a fourth heat exchange portion and a fifth heat exchange portion which are arranged in the fresh air duct, the fifth heat exchange portion is used for cooling and dehumidifying fresh air in the fresh air duct, and the fourth heat exchange portion is used for reheating the fresh air in the fresh air duct.
Optionally, the heat pipe circulation system comprises a heat pipe circulation branch, the heat pipe circulation branch comprises a fourth heat exchange portion, a third throttling component and a fifth heat exchange portion which are sequentially communicated, and the fourth heat exchange portion and the fifth heat exchange portion are both heat pipe heat exchangers; the fourth heat exchange part is arranged between the second heat exchange part and the third heat exchange part, and the fifth heat exchange part is arranged between the third heat exchange part and the air inlet of the fresh air duct.
Optionally, the heat pipe cycle system further includes a heat pump branch, the heat pump branch includes a second compressor, a return air port of the second compressor is communicated with an output end of the fifth heat exchanging portion, and an exhaust port of the second compressor is communicated with an input end of the fourth heat exchanging portion.
Optionally, the heat pipe circulation branch further includes a first switch valve, the first switch valve is connected in parallel with the second compressor, and the first switch valve is used for conducting the fifth heat exchanging portion and the fourth heat exchanging portion in a unidirectional manner.
Optionally, the heat pump branch further includes a second switch valve and a third switch valve, the second switch valve is disposed at an exhaust port of the second compressor, and the second switch valve is used for conducting the second compressor and the fourth heat exchanging portion in a unidirectional manner; the third on-off valve is arranged at the air return port of the second compressor and is used for opening or closing a passage between the second compressor and the fifth heat exchange part.
Optionally, the heat exchange system further includes a first throttling component and a second throttling component, the first throttling component is disposed between the first heat exchanging portion and the second heat exchanging portion, and the second throttling component is disposed between the second heat exchanging portion and the third heat exchanging portion.
Optionally, the heat exchange system further includes a first compressor, and two ends of the first compressor are respectively communicated with the first heat exchanging portion and the third heat exchanging portion.
Optionally, the heat exchange system further comprises a four-way valve, and the first compressor is respectively communicated with the first heat exchange portion and the third heat exchange portion through the four-way valve.
Optionally, the heat exchange system further includes a sixth heat exchange portion, the sixth heat exchange portion is communicated between the first heat exchange portion and the first compressor, and the sixth heat exchange portion is disposed outside the fresh air duct.
Optionally, the fresh air device further comprises:
the heat exchange system and the heat pipe circulating system are both electrically connected with the controller, so that the heat exchange system and the heat pipe circulating system are controlled to be closed or operated by the controller.
The heat exchange system comprises a first heat exchange part, a second heat exchange part and a third heat exchange part, wherein the first heat exchange part is arranged in the exhaust air duct, so that the air in the exhaust air duct exchanges heat with the first heat exchange part, and the heat or the cold of the air in the exhaust air duct is recovered through the first heat exchange part; the heat pipe circulating system comprises a fourth heat exchanging part and a fifth heat exchanging part which are arranged in the fresh air duct, the fifth heat exchanging part can recover heat of fresh air, and the recovered heat is released through the fourth heat exchanging part, so that the heat re-generated by the fresh air is increased, and the energy consumption of fresh air equipment is reduced; when the new trend equipment dehumidifies the new trend and reheat, heat transfer system's first heat transfer portion retrieves cold volume in the wind channel of airing exhaust, and the heat of new trend is retrieved in the new trend wind channel to the fifth heat transfer portion simultaneously to further reduce the energy consumption of new trend equipment, make new trend equipment energy-conserving operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fresh air device according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | |
| 2 | |
21 | Exhaust fan |
| 3 | |
31 | First |
| 32 | Second |
33 | Third |
| 34 | |
35 | Second throttling |
| 36 | |
37 | Four- |
| 38 | Sixth |
39 | |
| 4 | Heat pipe circulating system | 41 | Heat |
| 411 | The fourth |
412 | Fifth |
| 413 | |
414 | First switch valve |
| 42 | |
421 | |
| 422 | |
423 | Third on-off valve |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a fresh air device, which solves the technical problem of low energy-saving performance of the fresh air device.
In the embodiment of the present invention, as shown in fig. 1, the fresh air device includes a fresh air duct 1, an exhaust air duct 2, a heat exchange system 3 and a heat pipe circulation system 4, the heat exchange system 3 includes a first heat exchanging portion 31, a second heat exchanging portion 32 and a third heat exchanging portion 33, and the third heat exchanging portion 33 and the second heat exchanging portion 32 are sequentially arranged along a fresh air flowing direction; air and first heat transfer portion 31 in the wind channel 2 of airing exhaust carry out the heat exchange, air and second heat transfer portion 32 and third heat transfer portion 33 in the new wind channel 1 carry out the heat exchange, heat pipe circulation system 4 is including setting up fourth heat transfer portion 411 and the fifth heat transfer portion 412 in new wind channel 1, fifth heat transfer portion 412 is used for cooling down the dehumidification to the new trend in the new wind channel 1, fourth heat transfer portion 411 is used for reheating the new trend in the new wind channel 1.
The heat exchange system 3 of the technical scheme of the utility model comprises a first heat exchange part 31, a second heat exchange part 32 and a third heat exchange part 33, wherein the first heat exchange part 31 is arranged in the exhaust air duct 2, so that the air in the exhaust air duct 2 exchanges heat with the first heat exchange part 31, and the heat or the cold of the air in the exhaust air duct 2 is recovered through the first heat exchange part 31; the third heat exchanging part 33 and the second heat exchanging part 32 are sequentially arranged along the flow direction of fresh air, the second heat exchanging part 32 and the third heat exchanging part 33 are both arranged in the fresh air duct 1, so that the air in the fresh air duct 1 exchanges heat with the second heat exchanging part 32 and the third heat exchanging part 33, and the heat or the cold recovered by the first heat exchanging part 31 in the exhaust air duct 2 is released in the fresh air duct 1 through the second heat exchanging part 32 and the third heat exchanging part 33, so that the energy consumption of fresh air equipment is reduced; the heat pipe circulation system 4 comprises a fourth heat exchanging part 411 and a fifth heat exchanging part 412 which are arranged in the fresh air duct 1, the fifth heat exchanging part 412 can recover heat of fresh air, and the recovered heat is released through the fourth heat exchanging part 411, so that the amount of heat recovered by the fresh air is increased, and the energy consumption of fresh air equipment is reduced; when the fresh air equipment dehumidifies and reheats the fresh air, the first heat exchanging part 31 of the heat exchanging system 3 recovers cold in the air exhaust duct 2, and meanwhile, the fifth heat exchanging part 412 recovers heat of the fresh air in the fresh air duct, so that energy consumption of the fresh air equipment is further reduced, and the fresh air equipment is operated in an energy-saving mode.
As shown in fig. 1, a fresh air fan 11 is arranged in the fresh air duct 1, so that fresh air enters a room from the fresh air duct 1 through the fresh air fan 11, the air flow speed in the fresh air duct 1 can be increased by increasing the rotation speed of the fresh air fan 11, and correspondingly, the air flow speed in the fresh air duct 1 can be decreased by decreasing the rotation speed of the fresh air fan 11; the exhaust fan 21 is provided in the exhaust air duct 2 to exhaust the indoor air from the exhaust air duct 2 through the exhaust fan 21, increasing the rotation speed of the exhaust fan 21 can increase the air flow speed in the exhaust air duct 2, and correspondingly, decreasing the rotation speed of the exhaust fan 21 can decrease the air flow speed in the exhaust air duct 2.
In an example, the heat or the cold volume of the air in the exhaust air duct 2 is recovered by the heat exchange system 3, but the heat of the fresh air in the fresh air duct 1 cannot be recovered, which causes waste, so that the heat of the fresh air is recovered by the heat pipe circulation system 4 in the embodiment, and the energy-saving performance of the fresh air equipment is further improved by the heat exchange system 3 and the heat pipe circulation system 4.
In an embodiment, as shown in fig. 1, the heat pipe circulation system 4 includes a heat pipe circulation branch 41, the heat pipe circulation branch 41 includes a fourth heat exchanging portion 411, a third throttling component 413 and a fifth heat exchanging portion 412 which are sequentially communicated, and the fourth heat exchanging portion 411 and the fifth heat exchanging portion 412 are both heat pipe heat exchangers; the fourth heat exchanging portion 411 is disposed between the second heat exchanging portion 32 and the third heat exchanging portion 33, and the fifth heat exchanging portion 412 is disposed between the third heat exchanging portion 33 and the air inlet of the fresh air duct 1.
When the fresh air equipment carries out high-temperature dehumidification and reheating on the air in the fresh air duct 1, the second heat exchanging part 32 is reheated, the third heat exchanging part 33 is cooled and dehumidified to meet the purpose of dehumidification and reheating of the fresh air by the fresh air equipment, the first heat exchanging part 31 is used for raising the temperature of the air in the exhaust air duct 2, meanwhile, the air in the exhaust air duct 2 can lower the temperature of a refrigerant in the first heat exchanging part 31, so that the cold energy in the exhaust air duct 2 is recovered through the first heat exchanging part 31, and the recovered cold energy is released in the third heat exchanging part 33, so that the cooling and dehumidifying effects of the third heat exchanging part 33 are improved; the third throttling part 413 is controlled to throttle and depressurize, because the fourth heat exchanging part 411 is arranged between the second heat exchanging part 32 and the third heat exchanging part 33, the fresh air cooled by the third heat exchanging part 33 can reduce the temperature of the refrigerant in the fourth heat exchanging part 411 when passing through the fourth heat exchanging part 411, and the fresh air can heat the refrigerant in the fifth heat exchanging part 412 when passing through the fifth heat exchanging part 412, so that the temperature of the refrigerant in the fourth heat exchanging part 411 is lower than that of the refrigerant in the fifth heat exchanging part 412, thereby forming a pressure difference, allowing the refrigerant to flow from the fourth heat exchanging part 411 to the fifth heat exchanging part 412, and then flow from the fifth heat exchanging part 412 to the fourth heat exchanging part 411 to form a circulation; when the refrigerant flows in a circulating manner between the fourth heat exchanging portion 411 and the fifth heat exchanging portion 412, the fifth heat exchanging portion 412 can cool and dehumidify the fresh air, the fourth heat exchanging portion 411 reheats the fresh air, and therefore the heat of the fifth heat exchanging portion 412 for recycling the fresh air reheats the fresh air at the fourth heat exchanging portion 411, the reheating quantity of the fresh air equipment for the fresh air is increased, and the fresh air equipment can run in an energy-saving manner when dehumidification and reheating are performed.
In an embodiment, as shown in fig. 1, the heat pipe cycle 4 further includes a heat pump branch 42, the heat pump branch 42 includes a second compressor 421, a return air port of the second compressor 421 communicates with an output end of the fifth heat exchanging portion 412, and an exhaust port of the second compressor 421 communicates with an input end of the fourth heat exchanging portion 411; when the second compressor 421 is turned on, the refrigerant flows from the second compressor 421 to the fourth heat exchanging part 411, then flows from the fourth heat exchanging part 411 to the fifth heat exchanging part 412, and then returns to the second compressor 421 from the fifth heat exchanging part 412, thereby forming a circulation circuit.
When the fresh air equipment dehumidifies and reheats the air in the fresh air duct 1 at a low temperature, the first heat exchanging part 31 heats the air in the exhaust air duct 2 to recover cold energy, the second heat exchanging part 32 reheats the fresh air, and the third heat exchanging part 33 cools and dehumidifies the fresh air; the second compressor 421 is turned on, so that the refrigerant flows from the second compressor 421 to the fourth heat exchanging portion 411, then flows from the fourth heat exchanging portion 411 to the fifth heat exchanging portion 412, and then flows back to the second compressor 421 from the fifth heat exchanging portion 412 to form a circulation loop, in the process, the fourth heat exchanging portion 411 reheats the fresh air, and the fifth heat exchanging portion 412 cools and dehumidifies the fresh air, so as to reduce energy consumption of the fresh air equipment.
On the basis of reheating of the first heat exchanging part 31, reheating of the second heat exchanging part 32 and cooling and dehumidifying of the third heat exchanging part 33, when the temperature is high, the dehumidifying requirement is high, the third throttling part 413 is controlled to throttle and reduce the pressure, the second compressor 421 is turned off, so that the refrigerant does not pass through the second compressor 421, but circulates only between the fourth heat exchanging part 411 and the fifth heat exchanging part 412; when the temperature is low, the dehumidifying demand is low, and the second compressor 421 is controlled to operate, so that the refrigerant circulates in the loop formed by the second compressor 421, the fourth heat exchanging part 411, and the fifth heat exchanging part 412.
In this embodiment, the second compressor 421 may be started, or the operation state of the second compressor 421 may be switched to control the operation of the second compressor 421.
In an embodiment, as shown in fig. 1, the heat pipe circulation branch 41 further includes a first switch valve 414, the first switch valve 414 is connected in parallel with the second compressor 421, and the first switch valve 414 is configured to conduct the fifth heat exchanging portion 412 and the fourth heat exchanging portion 411 in a single direction, so as to prevent the refrigerant from flowing out of an exhaust port of the second compressor 421 and then flowing toward the fifth heat exchanging portion 412 when the second compressor 421 is started.
In an embodiment, as shown in fig. 1, the heat pump branch circuit 42 further includes a second switch valve 422 and a third switch valve 423, the second switch valve 422 is disposed at an exhaust port of the second compressor 421, and the second switch valve 422 is used for conducting the second compressor 421 and the fourth heat exchanging portion 411 in a single direction, so as to prevent the refrigerant from flowing toward the exhaust port of the second compressor 421 when flowing from the fifth heat exchanging portion 412 to the fourth heat exchanging portion 411; the third on/off valve 423 is provided at the return port of the second compressor 421, and the third on/off valve 423 opens or closes a passage between the second compressor 421 and the fifth heat exchanging part 412.
Optionally, the heat pipe circulation branch 41 further includes a first switch valve 414, where the first switch valve 414 is disposed between the air return port of the second compressor 421 and the air exhaust port of the second compressor 421 to conduct the fifth heat exchanging portion 412 and the fourth heat exchanging portion 411 in a single direction; the heat pump branch line 42 further includes a second switch valve 422 and a third switch valve 423, the second switch valve 422 is disposed at an exhaust port of the second compressor 421 to unidirectionally conduct the second compressor 421 and the fourth heat exchanging portion 411, and the third switch valve 423 is disposed at an air return port of the second compressor 421 to open or close a passage between the second compressor 421 and the fifth heat exchanging portion 412, so that the refrigerant is switched between a circulation loop formed by the fourth heat exchanging portion 411 and the fifth heat exchanging portion 412 and a circulation loop formed by the fourth heat exchanging portion 411, the fifth heat exchanging portion 412 and the second compressor 421, so as to perform high-temperature dehumidification and reheating and low-temperature dehumidification and reheating on fresh air corresponding to fresh air equipment. The first switch valve 414 and the second switch valve 422 may be one-way valves, and the third switch valve 423 may be a solenoid valve.
In an embodiment, as shown in fig. 1, the heat exchange system 3 further includes a first throttling part 34 and a second throttling part 35, the first throttling part 34 is disposed between the first heat exchanging part 31 and the second heat exchanging part 32, and the second throttling part 35 is disposed between the second heat exchanging part 32 and the third heat exchanging part 33, so that the first heat exchanging part 31, the second heat exchanging part 32 and the third heat exchanging part 33 can be reheated or cooled correspondingly by controlling the opening degrees of the first throttling part 34 and the second throttling part 35.
In the cooling mode, when the refrigerant flows from the first heat exchanging part 31 to the second heat exchanging part 32, the first throttling part 34 is controlled to perform throttling and pressure reduction operation, and when the second throttling part 35 is opened and is not throttled, the first heat exchanging part 31 is reheated, and the second heat exchanging part 32 and the third heat exchanging part 33 are cooled; when the first throttling member 34 is opened and not throttled and the second throttling member 35 is throttled and depressurized, the first heat exchanging portion 31 and the second heat exchanging portion 32 are reheated and the third heat exchanging portion 33 is cooled.
In the heating mode, when the refrigerant flows from the second heat exchanging portion 32 to the first heat exchanging portion 31, the first throttling member 34 is controlled to perform throttling and pressure reducing operations, and when the second throttling member 35 is opened and is not throttled, the first heat exchanging portion 31 is cooled, and the second heat exchanging portion 32 and the third heat exchanging portion 33 are reheated.
In an embodiment, as shown in fig. 1, the heat exchange system 3 further includes a first compressor 36, and two ends of the first compressor 36 are respectively communicated with the first heat exchanging part 31 and the third heat exchanging part 33, so that after the first compressor 36 compresses the refrigerant, the refrigerant can flow to the first heat exchanging part 31, and thus the refrigerant can sequentially circulate among the first compressor 36, the first heat exchanging part 31, the second heat exchanging part 32, and the third heat exchanging part 33.
Optionally, on a circulation loop formed by the first compressor 36, the first heat exchanging portion 31, the second heat exchanging portion 32 and the third heat exchanging portion 33, the first throttling component 34 is disposed between the first heat exchanging portion 31 and the second heat exchanging portion 32, and the second throttling component 35 is disposed between the second heat exchanging portion 32 and the third heat exchanging portion 33, so as to control the first throttling component 34 to throttle and reduce pressure when a refrigerant flows from the first compressor 36 to the first heat exchanging portion 31, and the second throttling component 35 is opened without throttling, so as to reduce the temperature of fresh air through the second heat exchanging portion 32 and the third heat exchanging portion 33, thereby refrigerating the fresh air by the fresh air equipment; or, the first throttling component 34 is controlled to be opened without throttling, the second throttling component 35 throttles and reduces the pressure to work, so that the second heat exchanging part 32 reheats the fresh air, the third heat exchanging part 33 cools and dehumidifies the fresh air, and the fresh air equipment dehumidifies and reheats the fresh air.
In an embodiment, as shown in fig. 1, the heat exchange system 3 further includes a four-way valve 37, the first compressor 36 is respectively communicated with the first heat exchanging part 31 and the third heat exchanging part 33 through the four-way valve 37, so as to change a flow direction of the refrigerant flowing out of the first compressor 36 through the four-way valve 37; during cooling, the four-way valve 37 is controlled to allow the refrigerant to flow from the first compressor 36 to the first heat exchanging portion 31, and during heating, the four-way valve 37 is controlled to allow the refrigerant to flow from the first heat exchanging portion 31 to the third heat exchanging portion 33, so that switching between fresh air cooling and heating by the fresh air equipment is realized.
In an embodiment, as shown in fig. 1, the heat exchange system 3 further includes a sixth heat exchange portion 38, the sixth heat exchange portion 38 is communicated between the first heat exchange portion 31 and the first compressor 36, and the sixth heat exchange portion 38 is disposed outside the fresh air duct 1, so that the heat exchange system 3 can exchange heat with outdoor air through the sixth heat exchange portion 38; during cooling, the refrigerant flows from the first compressor 36 to the sixth heat exchanging portion 38, and the sixth heat exchanging portion 38 exchanges heat with outdoor air to reduce the temperature of the refrigerant and improve the cooling effect of the second heat exchanging portion 32 and the third heat exchanging portion 33; during heating, the refrigerant flows from the first heat exchanging portion 31 to the sixth heat exchanging portion 38, and then flows back to the first compressor 36 from the sixth heat exchanging portion 38, and the sixth heat exchanging portion 38 exchanges heat with outdoor air to increase the temperature of the refrigerant, thereby improving the heating effect of the second heat exchanging portion 32 and the third heat exchanging portion 33.
Optionally, as shown in fig. 1, the heat exchange system 3 further includes an outdoor fan 39, and the outdoor fan 39 is configured to adjust a flow rate of air flowing to the sixth heat exchanger, so as to adjust heat exchange efficiency between the sixth heat exchanger and outdoor air.
In an embodiment, the fresh air device further includes a controller, and the heat exchange system 3 and the heat pipe circulation system 4 are both electrically connected to the controller, so as to control the heat exchange system 3 and the heat pipe circulation system 4 to be closed or operated through the controller.
When the new trend equipment moves, can set for according to the user, perhaps the operational mode of the temperature determination new trend equipment of outdoor new trend:
in the heating mode, the first compressor 36 is started to allow the refrigerant to flow from the first compressor 36 to the third heat exchanging portion 33, the second throttling part 35 is controlled to be opened and not throttled, the first throttling part 34 throttles and reduces the pressure to reheat the second heat exchanging portion 32 and the third heat exchanging portion 33, the first heat exchanging portion 31 and the sixth heat exchanging portion 38 are cooled, the first compressor 36 is closed, and heating of fresh air is achieved. When the air outlet temperature of the air outlet of the fresh air duct 1 is greater than or equal to a fifth temperature threshold value, the operating frequency of the first compressor 36 is reduced, so that the fresh air equipment can operate in an energy-saving mode; when the outlet air temperature is lower than the fifth temperature threshold, the rotation speed of the exhaust fan 21 is increased to increase the temperature reduction of the first heat exchanging part 31, so that the fresh air equipment can operate in an energy-saving manner.
In the refrigeration mode, when the inlet air temperature of the air inlet of the fresh air duct 1 is greater than the first temperature threshold value, the first compressor 36 is started, so that the refrigerant flows from the first compressor 36 to the sixth heat exchanging portion 38, the first throttling part 34 is controlled to throttle and reduce the pressure, the second throttling part 35 is opened and is not throttled, so that the sixth heat exchanging portion 38 is reheated, the first heat exchanging portion 31 is reheated, the second heat exchanging portion 32 is cooled, the third heat exchanging portion 33 is cooled, the first compressor 36 is closed, and the refrigeration of the fresh air is realized. When the outlet air temperature of the outlet air of the fresh air duct 1 is greater than or equal to the third temperature threshold, the rotation speed of the exhaust fan 21 is increased to improve reheating of the first heat exchanging part 31, so that the fresh air equipment can run in an energy-saving manner; when the outlet air temperature is lower than the third temperature threshold, the operating frequency of the first compressor 36 is reduced, so that the fresh air equipment can operate in an energy-saving mode.
In the cooling mode, when the inlet air temperature of the air inlet of the fresh air duct 1 is less than the first temperature threshold and greater than the second temperature threshold, the first compressor 36 is started, so that the refrigerant flows from the first compressor 36 to the sixth heat exchanging unit 38, the throttling of the second throttling unit 35 and the depressurization of the third throttling unit 413 are controlled, the first throttling unit 34 is opened without throttling, so that the sixth heat exchanging unit 38 is reheated, the first heat exchanging unit 31 is reheated, the second heat exchanging unit 32 is reheated, the third heat exchanging unit 33 is cooled, the fourth heat exchanging unit 411 is reheated, and the fifth heat exchanging unit 412 is cooled and dehumidified. When the outlet air temperature of the outlet air of the fresh air duct 1 is greater than or equal to the fourth temperature threshold, the rotation speed of the exhaust fan 21 is increased to increase reheating of the first heat exchanging part 31, so that the fresh air equipment can run in an energy-saving manner; when the outlet air temperature is lower than the fourth temperature threshold, the rotation speed of the exhaust fan 21 is reduced to reduce the reheating of the first heat exchanging part 31, so that the fresh air equipment can operate in an energy-saving mode.
In the cooling mode, when the inlet air temperature of the air inlet of the fresh air duct 1 is lower than the second temperature threshold, the first compressor 36 and the second compressor 421 are started to allow the refrigerant to flow from the first compressor 36 to the sixth heat exchange unit 38, the third on/off valve 423 is opened to allow the refrigerant to flow from the second compressor 421 to the fourth heat exchange unit 411, the second throttling unit 35 and the third throttling unit 413 are controlled to perform pressure reduction, the first throttling unit 34 is opened to perform no throttling, so that the sixth heat exchange unit 38 is reheated, the first heat exchange unit 31 is reheated, the second heat exchange unit 32 is reheated, the third heat exchange unit 33 is cooled, the fourth heat exchange unit 411 is reheated, and the fifth heat exchange unit 412 is cooled and dehumidified. When the outlet air temperature of the outlet air of the fresh air duct 1 is greater than or equal to the fourth temperature threshold, the operating frequency of the second compressor 421 is reduced, so that the fresh air equipment can operate in an energy-saving manner; when the outlet air temperature is lower than the fourth temperature threshold, the rotating speed of the exhaust fan 21 is reduced or the first compressor 36 is closed, so that the fresh air equipment can operate in an energy-saving mode.
Wherein the second temperature threshold is less than the first temperature threshold, the third temperature threshold is less than the fourth temperature threshold and less than the fifth temperature threshold; therefore, the embodiment of the utility model can run in an energy-saving mode in both the refrigeration mode and the heating mode, so that the fresh air equipment can run in an energy-saving mode under all working conditions.
For example, setting a first temperature threshold value to be 32-35 ℃, a second temperature threshold value to be 20-25 ℃, a third temperature threshold value to be 13-15 ℃, a fourth temperature threshold value to be 18-22 ℃ and a fifth temperature threshold value to be 35-40 ℃; the user starts the machine to set the refrigeration mode, the fresh air fan 11 and the exhaust fan 21 are started, the fresh air temperature is 34 ℃ equal to the first temperature threshold value, the high-temperature dehumidification reheating mode is entered, the third switch valve 423 is closed, the second throttling part 35 and the third throttling part 413 are controlled to throttle and reduce the pressure, the first throttling part 34 is opened and is not throttled, so that the sixth heat exchanging part 38 is reheated, the first heat exchanging part 31 is reheated, the second heat exchanging part 32 is reheated, the third heat exchanging part 33 is cooled, the fourth heat exchanging part 411 is reheated, and the fifth heat exchanging part 412 is cooled and dehumidified, the fresh air is cooled to 30 ℃ through the fifth heat exchanging part 412, is cooled to 12 ℃ through the third heat exchanging part 33, is heated to 16 ℃ through the fourth heat exchanging part 411, is heated to 23 ℃ through the second heat exchanging part 32, and the outlet air temperature is 23 ℃ and is higher than the fourth temperature threshold value, the reheat amount of the second heat exchanging portion 32 is reduced by increasing the rotation speed of the exhaust fan 21, thereby reducing the outlet air temperature.
For another example, setting a first temperature threshold value to be 32-35 ℃, a second temperature threshold value to be 20-25 ℃, a third temperature threshold value to be 13-15 ℃, a fourth temperature threshold value to be 18-22 ℃ and a fifth temperature threshold value to be 35-40 ℃; the user starts up and sets the heating mode, the fresh air fan 11 and the exhaust fan 21 are started, the second compressor 421 is closed, the third switch valve 423 is opened, the third throttling part 413 is controlled to be closed, the first throttling part 34 throttles and reduces the pressure to work, the second throttling part 35 is opened and does not throttle, so that the first heat exchanging part 31 is cooled, the second heat exchanging part 32 is reheated, the third heat exchanging part 33 is reheated, and the sixth heat exchanging part 38 is cooled, at the moment, the outlet air temperature is 45 ℃ and is greater than a fifth temperature threshold value, and the energy-saving operation is realized by reducing the operating frequency of the first compressor 36.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fresh air device is characterized by comprising a fresh air duct, an exhaust air duct, a heat exchange system and a heat pipe circulating system, wherein the heat exchange system comprises a first heat exchange part, a second heat exchange part and a third heat exchange part, and the third heat exchange part and the second heat exchange part are sequentially arranged in the fresh air duct along the flow direction of fresh air; air in the air exhaust duct exchanges heat with the first heat exchange portion, air in the fresh air duct exchanges heat with the second heat exchange portion and the third heat exchange portion, the heat pipe circulation system comprises a fourth heat exchange portion and a fifth heat exchange portion which are arranged in the fresh air duct, the fifth heat exchange portion is used for cooling and dehumidifying fresh air in the fresh air duct, and the fourth heat exchange portion is used for reheating the fresh air in the fresh air duct.
2. The fresh air device as claimed in claim 1, wherein the heat pipe circulation system comprises a heat pipe circulation branch, the heat pipe circulation branch comprises the fourth heat exchanging part, a third throttling part and the fifth heat exchanging part which are sequentially communicated, and the fourth heat exchanging part and the fifth heat exchanging part are both heat pipe heat exchangers; the fourth heat exchange part is arranged between the second heat exchange part and the third heat exchange part, and the fifth heat exchange part is arranged between the third heat exchange part and the air inlet of the fresh air duct.
3. The fresh air device as claimed in claim 2, wherein the heat pipe circulation system further comprises a heat pump branch, the heat pump branch comprises a second compressor, a return air port of the second compressor is communicated with an output end of the fifth heat exchanging portion, and an exhaust port of the second compressor is communicated with an input end of the fourth heat exchanging portion.
4. The fresh air device as claimed in claim 3, wherein the heat pipe circulation branch further comprises a first switch valve, the first switch valve is connected in parallel with the second compressor, and the first switch valve is used for conducting the fifth heat exchanging portion and the fourth heat exchanging portion in a one-way manner.
5. The fresh air device as claimed in claim 3, wherein the heat pump branch further comprises a second switch valve and a third switch valve, the second switch valve is disposed at an exhaust port of the second compressor, and the second switch valve is used for conducting the second compressor and the fourth heat exchanging portion in a one-way manner; the third on-off valve is arranged at the air return port of the second compressor and is used for opening or closing a passage between the second compressor and the fifth heat exchange part.
6. The fresh air device as claimed in claim 1, wherein the heat exchange system further comprises a first throttling part and a second throttling part, the first throttling part being disposed between the first heat exchanging part and the second heat exchanging part, and the second throttling part being disposed between the second heat exchanging part and the third heat exchanging part.
7. The fresh air device as claimed in claim 1, wherein the heat exchange system further comprises a first compressor, and two ends of the first compressor are respectively communicated with the first heat exchange portion and the third heat exchange portion.
8. The fresh air device as claimed in claim 7, wherein the heat exchange system further comprises a four-way valve, and the first compressor is respectively communicated with the first heat exchange portion and the third heat exchange portion through the four-way valve.
9. The fresh air device as claimed in claim 7, wherein the heat exchange system further includes a sixth heat exchange portion, the sixth heat exchange portion is communicated between the first heat exchange portion and the first compressor, and the sixth heat exchange portion is disposed outside the fresh air duct.
10. The fresh air device as claimed in any one of claims 1 to 9, further comprising:
the heat exchange system and the heat pipe circulating system are both electrically connected with the controller, so that the heat exchange system and the heat pipe circulating system are controlled to be closed or operated by the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122922560.0U CN216281896U (en) | 2021-11-24 | 2021-11-24 | Fresh air equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122922560.0U CN216281896U (en) | 2021-11-24 | 2021-11-24 | Fresh air equipment |
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| CN216281896U true CN216281896U (en) | 2022-04-12 |
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| CN202122922560.0U Active CN216281896U (en) | 2021-11-24 | 2021-11-24 | Fresh air equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245914A1 (en) * | 2022-06-23 | 2023-12-28 | 芜湖美智空调设备有限公司 | Fresh air equipment |
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2021
- 2021-11-24 CN CN202122922560.0U patent/CN216281896U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245914A1 (en) * | 2022-06-23 | 2023-12-28 | 芜湖美智空调设备有限公司 | Fresh air equipment |
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