Fresh air machine

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a fresh air machine which can selectively introduce outdoor air and indoor air into a heat exchange air duct and then introduce the outdoor air and the indoor air into a room according to the environment temperature and the annular humidity, or directly introduce the outdoor air into the room through a bypass air duct. By means of the arrangement, the fresh air ventilator can be prevented from being in a high-load state continuously, and then the service life of the fresh air ventilator is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fresh air equipment, for example to a fresh air machine. BACKGROUND

[0002] With the development of society, users have higher and higher requirements for the quality of life. In summer or winter, users generally close the doors and windows for a long time, which can cause the indoor air to become turbid and increase the carbon dioxide content in the room. Therefore, users also set up fresh air machines to deliver outdoor air to the room after processing to improve the quality of indoor air. In order to further improve the user experience, the conventional fresh air machine generally cools or heats the outdoor air to make the temperature of the outdoor air flowing into the outdoor air the same as the indoor temperature, thereby avoiding the indoor temperature fluctuation to affect the user experience.

[0003] In the related art, in order to reduce the energy consumption of the fresh air machine, a total heat exchange module is arranged in the fresh air machine. The fresh air machine simultaneously introduces indoor air and outdoor air to the total heat exchange module to exchange heat between the indoor air and the outdoor air. In this way, the outdoor air can be introduced into the room after the temperature of the outdoor air is equivalent to that of the indoor air.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the fresh air machine with the total heat exchange module still exchanges heat between the outdoor air and the indoor air through the total heat exchange module even if the temperature of the outdoor air is equivalent to that of the indoor air. This can cause the fresh air machine to be in a high load state continuously, which affects the service life of the fresh air machine.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a brief overview is given below. The overview is not a comprehensive overview of the embodiments described in the specification, nor is it intended to determine key / important elements or delineate the scope of the embodiments. It is only as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a fresh air machine which can selectively introduce outdoor air and indoor air into a heat exchange air duct and then into the room or directly introduce outdoor air into the room through a bypass air duct according to the ambient temperature and the relative humidity. In this way, the fresh air machine can be prevented from being in a high load state continuously, thereby ensuring the service life of the fresh air machine.

[0009] The new air machine provided by the embodiment of the present disclosure comprises a casing, a bypass box, a bypass fan, a heat exchange valve body, a bypass valve body and a control system. The casing is provided with a heat exchange air duct; the bypass box is arranged on one side of the heat exchange air duct, and the bypass box is provided with a bypass air duct which is independent of the heat exchange air duct; the bypass fan is in communication with the bypass air duct; the heat exchange valve body is used for dredging or blocking the heat exchange air duct; the bypass valve body is used for dredging or blocking the bypass air duct; the control system comprises a temperature and humidity detection assembly and a control device, and the temperature and humidity detection assembly is used for obtaining an ambient temperature t and an ambient humidity; wherein the control device is used for controlling the opening and closing of the heat exchange valve body and the bypass valve body according to the ambient temperature and the ambient humidity, and controlling the rotating speed of the bypass fan.

[0010] In some embodiments, when the ambient temperature is in a first temperature range and the ambient humidity is in a first humidity range, the control device controls the heat exchange valve body to block the heat exchange air duct, controls the bypass valve body to dredge the bypass air duct, and controls the bypass fan to rotate at a first bypass air speed.

[0011] In some embodiments, the ambient temperature being in the first temperature range comprises that the ambient temperature is less than or equal to 30 DEG C and greater than 25 DEG C, and the ambient humidity being in the first humidity range comprises that the ambient humidity is less than or equal to 65% and greater than 55%.

[0012] In some embodiments, when the ambient temperature is in a second temperature range and the ambient humidity is in a second humidity range, the control device controls the heat exchange valve body to block the heat exchange air duct, controls the bypass valve body to dredge the bypass air duct, and controls the bypass fan to rotate at a second bypass air speed; wherein the second temperature range is less than the first temperature range, the second humidity range is less than the first humidity range, and the second bypass air speed is greater than the first bypass air speed.

[0013] In some embodiments, the ambient temperature being in the second temperature range comprises that the ambient temperature is less than or equal to 25 DEG C and greater than 20 DEG C, and the ambient humidity being in the second humidity range comprises that the ambient humidity is less than or equal to 55% and greater than 45%.

[0014] In some embodiments, when the ambient temperature is in a third temperature range and the ambient humidity is in a third humidity range, the control device controls the heat exchange valve body to block the heat exchange air duct, controls the bypass valve body to dredge the bypass air duct, and controls the bypass fan to rotate at a third bypass air speed; wherein the third temperature range is less than the second temperature range, the third humidity range is less than the second humidity range, and the third bypass air speed is greater than the second bypass air speed.

[0015] In some embodiments, the ambient temperature being in the third temperature range comprises that the ambient temperature is less than or equal to 20 DEG C and greater than 18 DEG C, and the ambient humidity being in the third humidity range comprises that the ambient humidity is less than or equal to 45% and greater than 40%.

[0016] In some embodiments, when the ambient temperature is greater than the first temperature range or less than the third temperature range, the control device controls the heat exchange valve body to open the heat exchange air duct and controls the bypass valve body to close the bypass air duct; when the ambient humidity is greater than the first humidity range or less than the third humidity range, the control device controls the heat exchange valve body to open the heat exchange air duct and controls the bypass valve body to close the bypass air duct.

[0017] In some embodiments, the bypass box body comprises a bypass box base and a bypass box cover. The bypass box base is arranged on one side of the heat exchange air duct; the bypass box cover is buckled on the bypass box base on the side close to the heat exchange air duct; wherein a hollow cavity exists between the bypass box cover and the bypass box base to form the bypass air duct.

[0018] In some embodiments, the bypass valve body comprises a bypass flap and a bypass motor. The bypass flap is rotationally arranged at the air inlet or air outlet of the bypass air duct; the bypass motor is drivingly connected with the bypass flap; wherein the bypass motor can drive the bypass flap to rotate to open or close the bypass air inlet or bypass air outlet.

[0019] The new air fan provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The new air fan provided by the embodiments of the present disclosure comprises a casing, a bypass box body, a bypass fan, a heat exchange valve body, a bypass valve body and a control system. The casing is provided with a heat exchange air duct; the bypass box body is arranged on one side of the heat exchange air duct, and the bypass box body is provided with a bypass air duct which is independent of the heat exchange air duct; the bypass fan is in communication with the bypass air duct; the heat exchange valve body is used to open or close the heat exchange air duct; the bypass valve body is used to open or close the bypass air duct; the control system comprises a temperature and humidity detection assembly and a control device, and the temperature and humidity detection assembly is used to obtain the ambient temperature and the ambient humidity; wherein the control device is used to control the opening and closing of the heat exchange valve body and the bypass valve body according to the ambient temperature and the ambient humidity, and control the rotating speed of the bypass fan. A total heat exchange module is arranged in the heat exchange air duct. In this way, when the outdoor air temperature and humidity are not suitable for being directly introduced into the room, the outdoor air and indoor air can be first introduced into the heat exchange air duct to exchange heat between the outdoor air and the indoor air through the total heat exchange module; when the outdoor air temperature and humidity are suitable for being directly introduced into the room, the outdoor air can be directly introduced into the room through the bypass air duct. In this way, the new air fan can be prevented from being in a high load state for a long time, thereby ensuring the service life of the new air fan.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the present embodiments. Like numbers refer to like elements throughout. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. In the drawings:

[0023] Figure 1 is a structural schematic diagram of a new fan provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of the inside of a new fan provided by an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of a bypass box provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of a bypass base provided by an embodiment of the present disclosure;

[0027] Figure 5 is an air flow direction diagram in a bypass air duct provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural schematic diagram of a heat exchange valve body provided by an embodiment of the present disclosure.

[0029] Reference signs:

[0030] 10: cabinet; 101: mounting slot; 102: avoidance groove; 11: heat exchange air duct; 12: foaming piece;

[0031] 21: total heat exchange module; 22: heat exchange valve body; 221: frame body; 222: heat exchange swing leaf; 223: heat exchange motor; 224: transmission connecting rod;

[0032] 30: bypass box; 31: bypass box base; 311: mounting groove; 32: bypass box cover; 33: bypass air duct; 34: bypass valve body; 341: bypass swing leaf; 342: bypass motor. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical contents of the embodiments of the present disclosure more fully, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0034] The terms "first", "second", etc. in the description, claims, and drawings of the embodiments of the present disclosure, and the above-described drawings, are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0035] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0036] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0037] Unless otherwise specified, the term "a plurality of" means two or more.

[0038] In the embodiments of the present disclosure, the character " / " represents a "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0039] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0040] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] As Figures 1 to 6As shown, the new air machine provided by the embodiments of the present disclosure can selectively introduce outdoor air and indoor air into the heat exchange air duct 11 and then into the indoor environment, or directly introduce outdoor air into the indoor environment through the bypass air duct 33 according to the ambient temperature and humidity. In this way, the new air machine can be prevented from being in a high load state for a long time, thereby ensuring the service life of the new air machine.

[0042] As shown, the new air machine provided by the embodiments of the present disclosure can selectively introduce outdoor air and indoor air into the heat exchange air duct 11 and then into the indoor environment, or directly introduce outdoor air into the indoor environment through the bypass air duct 33 according to the ambient temperature and humidity. In this way, the new air machine can be prevented from being in a high load state for a long time, thereby ensuring the service life of the new air machine. Figures 1 to 6 As shown, the new air machine provided by the embodiments of the present disclosure can selectively introduce outdoor air and indoor air into the heat exchange air duct 11 and then into the indoor environment, or directly introduce outdoor air into the indoor environment through the bypass air duct 33 according to the ambient temperature and humidity. In this way, the new air machine can be prevented from being in a high load state for a long time, thereby ensuring the service life of the new air machine.

[0043] Specifically, the new air machine further comprises a total heat exchange module 21. The heat exchange air duct 11 is formed inside the machine shell 10 for air to flow through and exchange heat with the total heat exchange module 21. The bypass box 30 is arranged on one side of the heat exchange air duct 11. The bypass air duct 33 is arranged inside the bypass box 30, and the bypass air duct 33 and the heat exchange air duct 11 are independent of each other and not connected to each other, so that the air flow can selectively flow through one of them. The bypass fan is arranged in the bypass air duct 33 or is configured to be in fluid communication with the bypass air duct 33. The bypass fan is configured to drive the air flow through the bypass air duct 33 when it is running. The heat exchange valve 22 is arranged in the heat exchange air duct 11 or is configured to control the on-off of the heat exchange air duct 11. The heat exchange valve 22 has an open state and a closed state; when in the open state, the heat exchange air duct 11 is unblocked, allowing air to flow through; when in the closed state, the heat exchange air duct 11 is blocked, preventing air from flowing through. The bypass valve 34 is arranged in the bypass air duct 33 or is configured to control the on-off of the bypass air duct 33. The bypass valve 34 has an open state and a closed state; when in the open state, the bypass air duct 33 is unblocked, allowing air to flow through; when in the closed state, the bypass air duct 33 is blocked, preventing air from flowing through. The temperature and humidity detection assembly is configured to obtain the ambient temperature and humidity of the outdoor environment, and the control device is electrically connected with the temperature and humidity detection assembly, the heat exchange valve 22, the bypass valve 34 and the bypass fan.

[0044] The control device is configured to perform the following controls: receive ambient temperature and humidity data detected by the temperature and humidity detection component; control the opening and closing state (i.e., open or closed) of the heat exchange valve body 22 and the bypass valve body 34 according to the ambient temperature and humidity, thereby guiding the airflow selectively through the heat exchange duct 11 or the bypass duct 33; and control the rotation speed of the bypass fan according to the ambient temperature and humidity to adjust the fresh air volume in the bypass mode.

[0045] As can be seen, when the outdoor air temperature and humidity are not suitable for direct introduction into the room, the aforementioned fresh air unit can first introduce outdoor and indoor air into the heat exchange duct 11, so that heat exchange can occur between the outdoor and indoor air through the total heat exchange module 21. When the outdoor air temperature and humidity are suitable for direct introduction into the room, the outdoor air can be directly introduced into the room through the bypass ventilation duct 33. This setting can avoid the fresh air unit from being in a high-load state continuously, thereby ensuring the service life of the fresh air unit.

[0046] like Figures 1 to 6 As shown, in some embodiments, when the ambient temperature is within a first temperature range and the ambient humidity is within a first humidity range, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to clear the bypass air duct 33, and controls the bypass fan to rotate at a first-level bypass air speed.

[0047] Specifically, the control device is further configured to perform the following controls: when the ambient temperature and humidity are within a first temperature range and a first humidity range, control the heat exchange valve 22 to block the heat exchange duct 11; control the bypass valve 34 to clear the bypass duct 33; and control the bypass fan to run at a first-level bypass speed. It is understood that when the control system detects that the outdoor environment is within the aforementioned temperature and humidity range, the control device determines that the outdoor air is relatively comfortable and energy recovery is unnecessary. At this time, by closing the heat exchange valve 22, the path of airflow through the heat exchange duct 11 is blocked, preventing heat exchange between fresh air and exhaust air, thus avoiding unnecessary energy loss or reverse heating / cooling; by opening the bypass valve 34, an independent bypass duct 33 is established; and the bypass fan is started and runs at a first-level bypass speed, directly and in small quantities, introducing fresh outdoor air into the room to achieve energy-saving ventilation. At the same time, the opening degree of the bypass valve body 34 is controlled to be 1% to 40%, for example, the opening degree of the bypass valve body 34 can be 1%, 10%, 20%, 30% or 40%.

[0048] In the above embodiments, the primary bypass ventilation velocity can be set according to the user's actual needs. Further, the primary bypass ventilation velocity is greater than or equal to 500 r / min and less than 1000 r / min. For example, the primary bypass ventilation velocity can be 500 r / min, 700 r / min, 800 r / min, or 900 r / min.

[0049] As Figures 1 to 6 shown, in some embodiments, the environment temperature being in the first temperature range includes the environment temperature being less than or equal to 30°C and greater than 25°C, and the environment humidity being in the first humidity range includes the environment humidity being less than or equal to 65% and greater than 55%.

[0050] Specifically, the trigger condition of the first-stage bypass mode is limited to the range of 25-30°C for the environment temperature and 55-65% for the environment humidity, which further improves the energy-saving effect of the fresh air machine. It can be understood that the most suitable indoor temperature for the human body is usually 22-26°C, and the humidity is 40-60%. When the outdoor temperature exceeds 25°C and the humidity exceeds 55%, although it does not reach the degree of scorching or stifling, the human body has already begun to feel slightly hot and slightly humid. At this time, the fresh air machine can still have a cooling effect by directly introducing to replace the hotter and more humid air in the room, while saving the compressor energy consumption.

[0051] In actual application, in the case that the environment temperature is 30°C, 28°C or 26°C, and the environment humidity is 65%, 60% or 56%, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to open the bypass air duct 33, and controls the bypass air fan to rotate at the first-stage bypass air speed.

[0052] As Figures 1 to 6 shown, in some embodiments, in the case that the environment temperature is in the second temperature range and the environment humidity is in the second humidity range, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to open the bypass air duct 33, and controls the bypass air fan to rotate at the second-stage bypass air speed; wherein the second temperature range is less than the first temperature range, the second humidity range is less than the first humidity range, and the second-stage bypass air speed is greater than the first-stage bypass air speed.

[0053] Specifically, the control device is further configured to perform the following control: in the case that the environment temperature is in the second temperature range and the environment humidity is in the second humidity range, control the heat exchange valve body 22 to block the heat exchange air duct 11; control the bypass valve body 34 to open the bypass air duct 33; and control the bypass air fan to rotate at the second-stage bypass air speed. Wherein the second-stage bypass air speed is greater than the first-stage bypass air speed. At this time, the fresh air machine still closes the heat exchange path and opens the bypass path to ensure the zero-energy-consumption introduction of fresh air. At the same time, the bypass air fan is controlled to run at a higher second-stage bypass air speed. At this time, the system determines that the current outdoor air quality is better and the temperature / humidity difference with the indoor is smaller, so it performs larger air exchange. In this way, higher air exchange efficiency is achieved without consuming compressor energy and with limited increase in fan energy consumption. At the same time, the opening degree of the bypass valve body 34 is 41% to 70%, for example, the opening degree of the bypass valve body 34 can be 41%, 50%, 60% or 70%.

[0054] In the above embodiments, the secondary bypass air speed can be set according to the actual needs of the user. Further, the secondary bypass air speed is greater than or equal to 1000 r / min and less than 1300 r / min. For example, the secondary bypass air speed can be 1000 r / min, 1100 r / min, or 1200 r / min.

[0055] As shown in FIG. 8, in some embodiments, the environment temperature is in the second temperature range includes that the environment temperature is less than or equal to 25℃, and greater than 20℃; the environment humidity is in the second humidity range includes that the environment humidity is less than or equal to 55%, and greater than 45%. Figures 1 to 6 Specifically, the trigger condition of the secondary bypass mode is limited to the range of 20℃-25℃ for the environment temperature and 45%-55% for the environment humidity, which improves the user's comfort on the basis of ensuring energy saving.

[0056] In actual application, in the case of 21℃, 23℃, or 25℃ for the environment temperature and 46%, 50%, or 55% for the environment humidity, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to open the bypass air duct 33, and controls the bypass air blower to rotate at the secondary bypass air speed.

[0057] As shown in FIG. 9, in some embodiments, in the case of the environment temperature being in the third temperature range and the environment humidity being in the third humidity range, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to open the bypass air duct 33, and controls the bypass air blower to rotate at the tertiary bypass air speed; wherein the third temperature range is less than the second temperature range, the third humidity range is less than the second humidity range, and the tertiary bypass air speed is greater than the secondary bypass air speed.

[0058] Figures 1 to 6 Specifically, the control device is further configured to perform the following control: in the case of the environment temperature being in the third temperature range and the environment humidity being in the third humidity range, control the heat exchange valve body 22 to block the heat exchange air duct 11; control the bypass valve body 34 to open the bypass air duct 33; and control the bypass air blower to rotate at the tertiary bypass air speed. Wherein the tertiary bypass air speed is greater than the secondary bypass air speed. At this time, the fresh air blower still closes the heat exchange path and opens the bypass path, ensuring that the fresh air is introduced with zero energy consumption. At the same time, the bypass air blower is controlled to run at a higher tertiary bypass air speed. In this way, the ventilation efficiency is further improved without consuming compressor energy and with limited increase in air blower energy consumption. At the same time, the opening degree of the bypass valve body 34 is 71% to 100%, for example, the opening degree of the bypass valve body 34 can be 71%, 80%, 90%, or 100%.

[0059] Specifically, the control device is further configured to perform the following control: in the case of the environment temperature being in the third temperature range and the environment humidity being in the third humidity range, control the heat exchange valve body 22 to block the heat exchange air duct 11; control the bypass valve body 34 to open the bypass air duct 33; and control the bypass air blower to rotate at the tertiary bypass air speed. Wherein the tertiary bypass air speed is greater than the secondary bypass air speed. At this time, the fresh air blower still closes the heat exchange path and opens the bypass path, ensuring that the fresh air is introduced with zero energy consumption. At the same time, the bypass air blower is controlled to run at a higher tertiary bypass air speed. In this way, the ventilation efficiency is further improved without consuming compressor energy and with limited increase in air blower energy consumption. At the same time, the opening degree of the bypass valve body 34 is 71% to 100%, for example, the opening degree of the bypass valve body 34 can be 71%, 80%, 90%, or 100%.

[0060] ​In the above embodiments, the third bypass air speed can be set according to the actual needs of the user. Further, the third bypass air speed is greater than or equal to 1300 r / min and less than 1700 r / min. For example, the third bypass air speed can be 1300 r / min, 1400 r / min, 1500 r / min, or 1600 r / min.

[0061] As shown in FIG. 6, in some embodiments, the environment temperature is in the third temperature range includes that the environment temperature is less than or equal to 20℃, and greater than 18℃; the environment humidity is in the third humidity range includes that the environment humidity is less than or equal to 45%, and greater than 40%. Figures 1 to 6 Specifically, the triggering condition of the third bypass mode is limited to the range of 18℃-20℃ of the environment temperature and 40%-45% of the environment humidity, which improves the user's comfort on the basis of ensuring energy saving.

[0062] In practical applications, in the case that the environment temperature is 18℃, 19℃, or 20℃, and the environment humidity is 41%, 43%, or 45%, the control device controls the heat exchange valve body 22 to block the heat exchange air duct 11, controls the bypass valve body 34 to open the bypass air duct 33, and controls the bypass air fan to rotate at the third bypass air speed.

[0063] As shown in FIG. 6, in some embodiments, in the case that the environment temperature is greater than the first temperature range or less than the third temperature range, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33; in the case that the environment humidity is greater than the first humidity range or less than the third humidity range, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33.

[0064] Figures 1 to 6 Specifically, the control device is further configured to perform the following control: in the case that the environment temperature is greater than the upper limit value of the first temperature range, i.e., the environment temperature > 30℃, or less than the lower limit value of the third temperature range, i.e., the environment temperature ≤ 18℃, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33; in the case that the environment humidity is greater than the upper limit value of the first humidity range, i.e., the environment humidity > 65%, or less than the lower limit value of the third humidity range, i.e., the environment humidity ≤ 40%, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33.

[0065] Specifically, the control device is further configured to perform the following control: in the case that the environment temperature is greater than the upper limit value of the first temperature range, i.e., the environment temperature > 30℃, or less than the lower limit value of the third temperature range, i.e., the environment temperature ≤ 18℃, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33; in the case that the environment humidity is greater than the upper limit value of the first humidity range, i.e., the environment humidity > 65%, or less than the lower limit value of the third humidity range, i.e., the environment humidity ≤ 40%, the control device controls the heat exchange valve body 22 to open the heat exchange air duct 11, and controls the bypass valve body 34 to block the bypass air duct 33.

[0066] ​It can be understood that when the ambient temperature is greater than the upper limit of the first temperature range, the outdoor air temperature is high, and direct introduction will instantaneously increase the cooling load of the indoor air conditioner, causing the compressor to operate at high intensity, and the energy consumption will be much higher than the energy saved by heat recovery. Therefore, the system is closed bypass and heat exchange is enabled. Let the fresh air exchange heat with the indoor exhaust cold air before entering the room, and pre-cool it, thereby greatly reducing the load of the air conditioner host, achieving overall energy saving. When the ambient temperature is less than the lower limit of the third temperature range, the outdoor air temperature is low, and direct introduction of cold air will increase the burden of the indoor heating equipment. Enable heat exchange mode, you can use the indoor exhaust warm air to preheat the cold fresh air, reduce the energy required to heat the fresh air, and also achieve overall energy saving. Similarly, when the ambient humidity is greater than the upper limit of the first humidity range, the introduction of high humidity air will make the room hot and humid, and people will feel uncomfortable, and the air conditioner or dehumidifier will work. Through heat exchange, on the one hand, the cold energy can be recovered, and on the other hand, some total heat exchange cores can also recover dryness to a certain extent, which helps to reduce the humidity of the fresh air and reduce the dehumidification load. When the ambient humidity is less than the lower limit of the third humidity range, the introduction of very dry air will further reduce the indoor humidity, which may cause skin and respiratory discomfort. Enable heat exchange mode, you can use the indoor exhaust humid air to humidify the fresh air, which helps to maintain the stability of the indoor humidity and improve the comfort.

[0067] As shown in Figures 3 to 5 In some embodiments, the bypass box 30 includes a bypass box base 31 and a bypass box cover 32. The bypass box base 31 is arranged on one side of the heat exchange air duct 11; the bypass box cover 32 is buckled on the side of the bypass box base 31 close to the heat exchange air duct 11; wherein there is a hollow cavity between the bypass box cover 32 and the bypass box base 31 to form a bypass air duct 33.

[0068] Specifically, the bypass box cover 32 can be fixedly installed on the bypass box base 31, and the distance between the bypass box cover 32 and the bypass box base 31 is greater than or equal to a preset distance, so as to increase the size of the bypass air duct 33. At the same time, the bypass box cover 32 is arranged in close contact with the side wall surface of the total heat exchange module 21, so as to avoid gaps between the bypass box 30 and the total heat exchange module 21. In this way, when the heat exchange valve 22 opens the heat exchange air duct 11 and the bypass valve 34 blocks the bypass air duct 33, it is ensured that the outdoor air and the indoor air flow into the total heat exchange module 21.

[0069] In actual application, the bypass box cover 32 can be clamped on the bypass box base 31 by a clamping member such as a buckle, or can be fixed on the bypass box base 31 by a fastener such as a bolt.

[0070] In the above embodiments, the full heat exchange module 21 and the bypass box 30 are arranged in corresponding shapes and sizes. For example, the full heat exchange module 21 is generally configured as a regular pentagonal column structure, and the bypass box 30 is also configured as a regular pentagonal column structure.

[0071] As shown in FIG. 1, in some embodiments, the bypass valve body 34 includes a bypass flap 341 and a bypass motor 342. The bypass flap 341 is arranged to rotate at the inlet or outlet of the bypass air duct 33. The bypass motor 342 is drivingly connected to the bypass flap 341. The bypass motor 342 can drive the bypass flap 341 to rotate to unblock or block the bypass inlet or bypass outlet. Figures 3 to 5 Specifically, the bypass flap 341 is arranged at the bypass inlet or bypass outlet, and the two ends of the bypass flap 341 are rotatably connected to the bypass box 30 through a rotating shaft. The bypass motor 342 is arranged on one side of the bypass flap 341, and the driving shaft of the bypass motor 342 is drivingly connected to the rotating shaft of the bypass flap 341 to drive the bypass flap 341 to rotate circumferentially. If the bypass flap 341 is arranged at the bypass inlet, the size of the bypass flap 341 is greater than or equal to the size of the bypass inlet. If the bypass flap 341 is arranged at the bypass outlet, the size of the bypass flap 341 is greater than or equal to the size of the bypass outlet.

[0072] When the temperature difference between outdoor air and indoor air is small, the bypass motor 342 drives the bypass flap 341 to rotate to a position parallel to the bypass air duct 33 to unblock the bypass air duct 33, so that outdoor air can flow directly into the indoor air through the bypass air duct 33. When the temperature difference between outdoor air and indoor air is large, the bypass motor 342 drives the bypass flap 341 to rotate to a position perpendicular to the bypass air duct 33 to block the bypass air duct 33, so that outdoor air can only flow into the indoor air through the heat exchange air duct 11.

[0073] As shown in FIG. 1, optionally, the heat exchange valve body 22 includes a frame 221, a heat exchange flap 222, and a heat exchange motor 223. The frame 221 is arranged in the heat exchange air duct 11. The heat exchange flap 222 is rotatably arranged in the frame 221. The heat exchange motor 223 is drivingly connected to the heat exchange flap 222. The heat exchange motor 223 can drive the heat exchange flap 222 to rotate to unblock or block the heat exchange air duct 11.

[0074] Figure 6 Specifically, the frame 221 is fixedly installed in the heat exchange air duct 11, and the two ends of the heat exchange flap 222 are rotatably arranged in the frame 221 through a rotating shaft. The heat exchange motor 223 is drivingly connected to the heat exchange flap 222 to drive the heat exchange flap 222 to rotate circumferentially.

[0075] Specifically, the frame 221 is fixedly installed in the heat exchange air duct 11, and the two ends of the heat exchange flap 222 are rotatably arranged in the frame 221 through a rotating shaft. The heat exchange motor 223 is drivingly connected to the heat exchange flap 222 to drive the heat exchange flap 222 to rotate circumferentially.

[0076] ​In the case that the temperature difference between the outdoor air and the indoor air is small, the heat exchange motor 223 drives the heat exchange swing leaf 222 to rotate to a position perpendicular to the heat exchange air duct 11 to block the heat exchange air duct 11, at this time, the outdoor air cannot flow into the indoor air through the heat exchange air duct 11, and then cannot exchange heat with the indoor air through the total heat exchange module 21. In the case that the temperature difference between the outdoor air and the indoor air is large, the heat exchange motor 223 drives the heat exchange swing leaf 222 to rotate to a position parallel to the bypass air duct 33 to dredge the bypass air duct 33, at this time, the outdoor air and the indoor air can flow into the heat exchange air duct 11 and exchange heat through the total heat exchange module 21.

[0077] As shown in Figure 6 Optionally, the heat exchange valve body 22 comprises a plurality of heat exchange swing leaves 222, and the plurality of heat exchange swing leaves 222 are arranged in parallel and spaced apart in the frame body 221; the heat exchange valve body 22 further comprises a transmission connecting rod 224. The transmission connecting rod 224 is respectively connected in rotation with the plurality of heat exchange swing leaves 222; wherein the heat exchange motor 223 is drivingly connected with the transmission connecting rod 224 to drive the transmission connecting rod 224 to reciprocate, thereby driving the heat exchange swing leaf 222 to rotate.

[0078] Specifically, the plurality of heat exchange swing leaves 222 are arranged along the length direction of the frame body 221, and the plurality of heat exchange swing leaves 222 are respectively arranged in rotation in the frame body 221. The transmission connecting rod 224 is arranged perpendicular to the plurality of heat exchange swing leaves 222 and is respectively connected in rotation with the plurality of heat exchange swing leaves 222. The heat exchange motor 223 is drivingly connected with the transmission connecting rod 224 and can simultaneously drive the plurality of heat exchange swing leaves 222 to rotate through the transmission connecting rod 224.

[0079] It can be understood that the size of the total heat exchange module 21 is generally large, and therefore the size of the heat exchange air duct 11 is also large. Therefore, by blocking the heat exchange air duct 11 through the plurality of heat exchange swing leaves 222, the size of a single heat exchange swing leaf 222 can be avoided to be too large, thereby avoiding interference between the heat exchange swing leaf 222 and the total heat exchange module 21 or other components when the heat exchange swing leaf 222 moves.

[0080] As shown in Figure 1 Optionally, the heat exchange air duct 11 comprises a heat exchange air inlet and a heat exchange air outlet, and the heat exchange air inlet and the heat exchange air outlet are respectively communicated with the air inlet duct and the air outlet duct; the position corresponding to the heat exchange air inlet or the heat exchange air outlet of the machine shell 10 is further provided with a mounting slot 101; wherein the shape and size of the mounting slot 101 correspond to the frame body 221 to enable the frame body 221 to be inserted into the mounting slot 101.

[0081] Specifically, the outdoor air of the air inlet duct can flow into the heat exchange air duct 11 through the heat exchange air inlet and flow to the indoor through the heat exchange air outlet. The foaming piece 12 is provided with a mounting slot 101 at the position corresponding to the bypass box 30, and one side of the mounting slot 101 is provided with an opening, and the frame body 221 can be inserted into the mounting slot 101 through the opening, so as to mount the heat exchange valve body 22 at the heat exchange air inlet or the heat exchange air outlet. In the case that the mounting slot 101 is provided at the heat exchange air inlet, the heat exchange valve body 22 is mounted at the heat exchange air inlet, and the size of the heat exchange valve body 22 is greater than or equal to the size of the heat exchange air inlet, so that the heat exchange valve body 22 can completely block the heat exchange air inlet; in the case that the mounting slot 101 is provided at the heat exchange air outlet, the heat exchange valve body 22 is mounted at the heat exchange air outlet, and the size of the heat exchange valve body 22 is greater than or equal to the size of the heat exchange air outlet, so that the heat exchange valve body 22 can completely block the heat exchange air outlet.

[0082] As shown in Figure 1 , optionally, one side of the mounting slot 101 is also provided with a recess 102, and the heat exchange motor 223 can be mounted in the recess 102.

[0083] Specifically, the foaming piece 12 is also provided with a recess 102 at the position corresponding to the heat exchange motor 223, and the recess 102 is located on the other side of the frame body 221 relative to the total heat exchange module 21, and the shape and size of the recess 102 correspond to the heat exchange motor 223. After the frame body 221 is inserted into the mounting slot 101, the heat exchange motor 223 can be accommodated in the recess, so as to fix the heat exchange motor 223.

[0084] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A fresh air ventilator, characterized in that, include: The casing (10) is equipped with a heat exchange air duct (11); A bypass box (30) is provided on one side of the heat exchange air duct (11). The bypass box (30) is provided with a bypass air duct (33). The bypass air duct (33) is independent of the heat exchange air duct (11). A bypass fan is connected to the bypass ventilation duct (33); Heat exchange valve body (22) is used to clear or block the heat exchange air duct (11); A bypass valve body (34) is used to clear or block the bypass duct (33); and, The control system includes a temperature and humidity detection component and a control device, wherein the temperature and humidity detection component allows the user to obtain ambient temperature and ambient humidity. The control device is used to control the opening and closing of the heat exchange valve body (22) and the bypass valve body (34) according to the ambient temperature and ambient humidity, and to control the rotation speed of the bypass fan.

2. The fresh air system according to claim 1, characterized in that, When the ambient temperature is within the first temperature range and the ambient humidity is within the first humidity range, the control device controls the heat exchange valve body (22) to block the heat exchange air duct (11), controls the bypass valve body (34) to clear the bypass air duct (33), and controls the bypass fan to rotate at the first-level bypass air speed.

3. The fresh air system according to claim 2, characterized in that, The ambient temperature is within the first temperature range, which includes an ambient temperature less than or equal to 30℃ and greater than 25℃; and... The first humidity range includes ambient humidity less than or equal to 65% and greater than 55%.

4. The fresh air system according to claim 2, characterized in that, When the ambient temperature is within the second temperature range and the ambient humidity is within the second humidity range, the control device controls the heat exchange valve body (22) to block the heat exchange air duct (11), controls the bypass valve body (34) to clear the bypass air duct (33), and controls the bypass fan to rotate at a secondary bypass air speed. Among them, the second temperature range is smaller than the first temperature range, the second humidity range is smaller than the first humidity range, and the second bypass ventilation velocity is greater than the first bypass ventilation velocity.

5. The fresh air system according to claim 4, characterized in that, The ambient temperature is within the second temperature range, which includes an ambient temperature less than or equal to 25°C and greater than 20°C; and... The ambient humidity is within the second humidity range, which includes ambient humidity less than or equal to 55% and greater than 45%.

6. The fresh air system according to claim 4, characterized in that, When the ambient temperature is in the third temperature range and the ambient humidity is in the third humidity range, the control device controls the heat exchange valve body (22) to block the heat exchange air duct (11), controls the bypass valve body (34) to clear the bypass air duct (33), and controls the bypass fan to rotate at the third bypass air speed. Among them, the third temperature range is smaller than the second temperature range, the third humidity range is smaller than the second humidity range, and the third bypass ventilation velocity is greater than the second bypass ventilation velocity.

7. The fresh air system according to claim 6, characterized in that, The ambient temperature falls within the third temperature range, which includes ambient temperatures less than or equal to 20°C and greater than 18°C; and... The ambient humidity is in the third humidity range, which includes ambient humidity less than or equal to 45% and greater than 40%.

8. The fresh air system according to claim 1, characterized in that, When the ambient temperature is greater than the first temperature range or less than the third temperature range, the control device controls the heat exchange valve body (22) to clear the heat exchange air duct (11) and controls the bypass valve body (34) to block the bypass air duct (33); or, When the ambient humidity is greater than the first humidity range or less than the third humidity range, the control device controls the heat exchange valve body (22) to clear the heat exchange air duct (11) and controls the bypass valve body (34) to block the bypass air duct (33).

9. The fresh air unit according to any one of claims 1 to 8, characterized in that, The bypass box (30) includes: A bypass box base (31) is disposed on one side of the heat exchange duct (11); and, The bypass box cover (32) is fastened to the side of the bypass box base (31) near the heat exchange duct (11); There is a hollow cavity between the bypass box cover (32) and the bypass box base (31) to form the bypass ventilation duct (33).

10. The fresh air unit according to any one of claims 1 to 8, characterized in that, The bypass valve body (34) includes: A bypass louver (341) rotates at the air inlet or outlet of the bypass ventilation duct (33); and, A bypass motor (342) is driven and connected to the bypass oscillating blade (341); The bypass motor (342) can drive the bypass blade (341) to rotate to clear or block the bypass air inlet or the bypass air outlet.

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