Adjustable double air source ventilation and heat exchange device

Abstract

This utility model discloses an adjustable dual-air-source ventilation and heat exchange device, including a front chamber and a rear chamber of an air box. The front chamber has a first air duct with a first air regulating valve for drawing air from the room. The rear chamber has a second air duct with a second air regulating valve for drawing air from the outside. It also includes an air inlet chamber separating the front and rear chambers. The air inlet chamber has a first inlet connecting to the first air duct and a second inlet connecting to the second air duct. The outlet of the air inlet chamber is connected to the air inlet of a fan, and the air outlet of the fan is connected to the indoor air-using point via an air outlet pipe. The beneficial effects of this utility model are: for relatively enclosed spaces where people spend a long time, such as offices and duty rooms, using this device allows for mixed ventilation from both outdoor fresh air and indoor recirculated air, which is more beneficial to human health and safety, and makes indoor staff feel more comfortable.

Description

Technical Field

[0001] This utility model relates to the field of indoor ventilation and heat exchange technology, and in particular to an adjustable dual-air-source ventilation and heat exchange device. Background Technology

[0002] Currently, in industrial enterprises, traditional ventilation and heat exchange devices (such as those attached to the instruction manual) are still widely used. Figure 1 (As shown) This device typically uses a single air source for ventilation and heat exchange, with pure indoor circulation. It consists of a front chamber 1 and a rear chamber 2, but only the front chamber 1 contains the air intake grille 11, filter 12, and air heat exchanger 13. It also includes a fan 3 for air circulation, with an air outlet 31. Its characteristics are: (1) For air-use points such as offices and duty rooms where people stay for a long time and are relatively enclosed, the use of a single indoor circulating air source for ventilation and heat exchange for a long time will reduce the oxygen content and affect the health, safety and comfort of the human body to a certain extent.

[0003] (2) For spaces where equipment that needs to operate continuously throughout the four seasons, such as power distribution rooms, server rack rooms, and data centers, is located, the equipment is usually densely distributed and emits a lot of heat. In winter, the indoor space also needs to be cooled down. However, the outdoor temperature is low in winter, and pure outdoor cold air can be supplied stably. If it is abandoned and the heat exchange unit is turned on for cooling instead, it will cause energy waste.

[0004] The patent application number "CN201420788372.0" discloses "a cabinet with dual-channel heat dissipation". Although it achieves dual-channel heat dissipation of the cabinet, its focus is on the sealing design of the channels, and it does not regulate the temperature of the circulating air. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable dual-air-source ventilation and heat exchange device that can freely switch between "single-air-source heat exchange" and "dual-air-source mixed ventilation" modes to meet the temperature regulation and air quality requirements in different scenarios.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable dual-air-source ventilation and heat exchange device includes a front chamber and a rear chamber of an air box. The front chamber of the air box has a first air duct and a first air regulating valve for drawing air from the room is provided on the first air duct. The rear chamber of the air box has a second air duct and a second air regulating valve for drawing air from the outside is provided on the second air duct.

[0007] Preferably, the device further includes an air intake chamber that separates the front chamber and the rear chamber of the air box. The air intake chamber has a first inlet that connects to the first air duct and a second inlet that connects to the second air duct. The outlet of the air intake chamber is connected to the air inlet of the fan, and the air outlet of the fan is connected to the indoor air supply point through the air outlet pipe.

[0008] Preferably, the first air duct is further provided with a first air intake grille, a first filter screen and a first air heat exchanger, and the air enters the air intake chamber after passing through the first air intake grille, the first filter screen, the first air regulating valve and the first air heat exchanger in sequence.

[0009] Preferably, the device further includes a heat exchange unit for generating circulating water, wherein the first air heat exchanger has a first circulating water inlet and a first circulating water outlet connected to the heat exchange unit.

[0010] Preferably, the second air duct is further provided with a second air intake grille, a second filter screen, and a second air heat exchanger. The air enters the air intake chamber after passing through the second air intake grille, the second filter screen, the second air regulating valve, and the second air heat exchanger in sequence.

[0011] Preferably, the second air heat exchanger has a second circulating water inlet and a second circulating water outlet connected to the heat exchange unit.

[0012] Preferably, the adjusting handles of the first and second air regulating valves are both located outside the ventilation and heat exchange device.

[0013] The beneficial effects of this utility model are as follows: 1. For relatively enclosed spaces where people spend a lot of time, such as offices and duty rooms, this device can provide ventilation through a combination of outdoor fresh air and indoor recirculated air, which is more beneficial to human health and safety and makes indoor staff feel more comfortable.

[0014] 2. For spaces such as power distribution rooms, server rack rooms, and data centers that require continuous operation throughout the year and have densely packed equipment with significant heat dissipation, this device can provide pure outdoor cold air supply in winter, ensuring a stable supply and eliminating the need to operate heat exchange units. This saves on unit electricity and labor costs associated with heat exchange, resulting in more rational energy use and reduced energy waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a ventilation and heat exchange device in the prior art; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 These are the front view and top view of the regulating valve in this utility model; Figure 4 This is a left view of the air regulating valve in this utility model; Figure 5 This is a left view of another type of air regulating valve according to this utility model.

[0016] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] Example 1 like Figure 2 As shown, an adjustable dual-air-source ventilation and heat exchange device includes a front chamber 1, a rear chamber 2, and an air inlet chamber 4 separating the two. The front chamber 1 has a first air duct, and a first air regulating valve 5 for drawing air from the room is installed on the first air duct. The rear chamber 2 has a second air duct, and a second air regulating valve 6 for drawing air from the outside is installed on the second air duct.

[0019] The air intake chamber 4 has a first inlet (not shown in the figure) that connects to the first air duct and a second inlet (not shown in the figure) that connects to the second air duct. The outlet of the air intake chamber 4 is connected to the air inlet 32 ​​of the fan 3, and the air outlet 31 of the fan 3 is connected to the indoor air supply point through the air outlet duct.

[0020] During use, when fan 3 is started and the first air regulating valve 5 is opened, indoor air can be drawn in to achieve indoor air circulation; when the second air regulating valve 6 is opened, fresh air can be drawn in from the outside and circulated into fan 3 along the second air duct to replenish the indoor air. The first air regulating valve 5 and the second air regulating valve 6 can also be opened simultaneously to further improve ventilation efficiency and increase indoor comfort.

[0021] The first air duct is also equipped with a first air intake grille 11, a first filter screen 12 and a first air heat exchanger 13. The air enters the air intake chamber 4 after passing through the first air intake grille 11, the first filter screen 12, the first air regulating valve 5 and the first air heat exchanger 13 in sequence, and is then discharged through the fan 3.

[0022] This device also includes a heat exchange unit for generating circulating water (generally, cooling water in summer and hot water in winter; hot or cold water can also be customized according to demand). The first air heat exchanger 13 has a first circulating water inlet and a first circulating water outlet connected to the heat exchange unit. The air flowing through the first air heat exchanger 13 is heated or cooled by the flow of circulating water, and then delivered by the fan 3 to different indoor air usage points to improve indoor comfort.

[0023] The second air duct is also equipped with a second air inlet grille 21, a second filter screen 22, and a second air heat exchanger 23. Air flows sequentially through the second air inlet grille 21, the second filter screen 22, the second air regulating valve 6, and the second air heat exchanger 23 before entering the air inlet chamber 4 and then being discharged through the fan 3. The second air heat exchanger 23 has a second circulating water inlet and a second circulating water outlet connected to the heat exchange unit. Its structure is similar to that of the first air duct and will not be described in detail in this embodiment.

[0024] like Figure 3 and Figure 4 The diagram shows the structure of the first air regulating valve 5 and the second air regulating valve 6 in this application. The two valves have identical structures, and the first air regulating valve 5 has an adjusting handle 51. In this embodiment, the adjusting handles of both the first air regulating valve 5 and the second air regulating valve 6 are located outside the ventilation and heat exchange device. Since the entire device is installed outdoors, it is preferable that the adjusting handles are also installed outdoors, as this will not occupy indoor space or affect the aesthetics of the interior decoration. Furthermore, since this device is mainly used in industrial enterprises, where ventilation and heat exchange devices are typically managed by a designated person, the person in charge can adjust the valves without entering the room or affecting personnel and equipment.

[0025] like Figure 5 The diagram shown is of another type of air regulating valve. During use, its specific shape and dimensions may need to be customized according to the device specifications.

[0026] Example 2 This embodiment is mainly applied to relatively enclosed ventilated spaces such as offices and duty rooms where people stay for a long time.

[0027] In this embodiment, inside the air box front chamber 1, the first air intake grille 11 and the first filter screen 12 are sequentially installed on the indoor wall of the air-use point. Then, behind the first air intake grille 11 and the first filter screen 12, the first air regulating valve 5 and the first air heat exchanger 13 are sequentially installed. The first air heat exchanger 13 is connected to the circulating water provided by the heat exchange unit through the first circulating water inlet and the first circulating water outlet, thereby exchanging heat and cold with the indoor air before sending it back into the room.

[0028] A second air intake grille 21 is installed on the outer side of the rear chamber 2 of the air box. A second filter screen 22 is installed on the inner side of the second air intake grille 21. Then, a second air regulating valve 6 and a second air heat exchanger 23 are installed in sequence. The second air heat exchanger 23 is connected to the circulating water provided by the heat exchange unit through a second circulating water inlet and a second circulating water outlet, so as to exchange the outdoor air with heat and cold before sending it into the room.

[0029] During summer cooling and winter heating, the first air regulating valve 5 is opened for internal circulation heat exchange. At this time, the indoor air at the air-use point flows into the front chamber 1 of the air box through the first air intake grille 11 and is forced to pass through the fin gap of the first air heat exchanger 13 to exchange heat with the circulating water (temperature rise / temperature drop ≥10℃). After heat exchange, the air passes through the air intake chamber 4 and is sent to the air-use point by the fan 3 to form a closed loop circulation. At the same time, the second air regulating valve 6 is opened as needed and adjusted to the required opening degree (the air intake volume can be adjusted by adjusting the opening degree of the air regulating valve). Outdoor air flows into the rear chamber 2 of the air box through the second air intake grille 21 and is forced through the fin gap of the second air heat exchanger 23 to exchange heat with the circulating water (temperature rise / temperature drop ≥8℃). After heat exchange, the air enters the air intake chamber. The indoor air (accounting for 60%~80%) and the outside fresh air (accounting for 20%~40%) at the air use point have no order and can be adjusted according to actual needs. The two mix in the air intake chamber 4, and the mixed airflow is sent to the air use point by the fan 3.

[0030] While reducing heat exchange costs and saving energy, it also ensures the safety of the heat exchange environment and guarantees human comfort.

[0031] Example 3 This embodiment is mainly applied to air-conditioned spaces with a large number and density of equipment, and a large amount of heat generation, such as power distribution rooms, server rack rooms, and data centers.

[0032] The arrangement of the components is the same as in Embodiment 2, and will not be described in detail in this embodiment.

[0033] When cooling is still required in winter, there is no need to turn on the heat exchange unit for heat exchange and cooling. Simply close the first air regulating valve 5 and open the second air regulating valve 6 to its maximum opening. Outdoor fresh air flows into the rear chamber 2 of the air box through the second air intake grille 21 and is forced through the fin gaps of the second air heat exchanger 23. It is then delivered to the air consumption point by the fan 3, forming a positive pressure in the room. At this time, pure outdoor cold air is supplied, which can achieve the purpose of cooling the room with good effect. At the same time, it saves the unit's electricity and labor service costs for heat exchange, making more rational use of energy and reducing energy waste.

[0034] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0036] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable dual-air-source ventilation and heat exchange device, comprising a front chamber and a rear chamber of an air box, characterized in that: The front chamber of the air box has a first air duct, and a first air regulating valve for drawing air from the room is provided on the first air duct. The rear chamber of the air box has a second air duct, and a second air regulating valve for drawing air from the outside is provided on the second air duct.

2. The adjustable dual-air-source ventilation and heat exchange device according to claim 1, characterized in that, It also includes an air intake chamber that separates the front chamber and the rear chamber of the air box. The air intake chamber has a first inlet that connects to the first air duct and a second inlet that connects to the second air duct. The outlet of the air intake chamber is connected to the air inlet of the fan, and the air outlet of the fan is connected to the indoor air supply point through the air outlet duct.

3. The adjustable dual-air-source ventilation and heat exchange device according to claim 2, characterized in that, The first air duct is also equipped with a first air intake grille, a first filter screen and a first air heat exchanger. The air enters the air intake chamber after passing through the first air intake grille, the first filter screen, the first air regulating valve and the first air heat exchanger in sequence.

4. The adjustable dual-air-source ventilation and heat exchange device according to claim 3, characterized in that, It also includes a heat exchange unit for generating circulating water, wherein the first air heat exchanger has a first circulating water inlet and a first circulating water outlet connected to the heat exchange unit.

5. An adjustable dual-air-source ventilation and heat exchange device according to claim 4, characterized in that, The second air duct is also equipped with a second air intake grille, a second filter screen, and a second air heat exchanger. The air enters the air intake chamber after passing through the second air intake grille, the second filter screen, the second air regulating valve, and the second air heat exchanger in sequence.

6. An adjustable dual-air-source ventilation and heat exchange device according to claim 5, characterized in that, The second air heat exchanger has a second circulating water inlet and a second circulating water outlet connected to the heat exchange unit.

7. An adjustable dual-air-source ventilation and heat exchange device according to claim 1, characterized in that, The adjusting handles of both the first and second air regulating valves are located outside the ventilation and heat exchange device.

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