Brand-new gradient cascade dual-dehumidification reheating energy-saving fresh air ventilator

Abstract

A brand new gradient cascade double-dehumidification reheating energy-saving fresh air machine comprises a machine body, an indoor return air inlet and an outdoor fresh air inlet are formed in one side of the machine body, an indoor air supply outlet is formed in the other side of the machine body, and a precooler, a dehumidifier and a reheater are sequentially arranged in the machine body from one side of the outdoor fresh air inlet to one side of the indoor air supply outlet. A heat exchanger is further installed in the machine body, a water inlet and a water return port are further formed in the bottom of the machine body, the water inlet is communicated with an inlet of the precooler through a water inlet pipeline, an outlet of the precooler is communicated with a water side inlet of the heat exchanger, and a water side outlet of the heat exchanger is communicated with the water return port through a water return pipeline. A refrigerant inlet of the heat exchanger is communicated with an outlet of the dehumidifier, a refrigerant outlet of the heat exchanger is communicated with an inlet of the dehumidifier through the compressor, the water return pipeline is further communicated with a reheating pipeline communicated with an inlet of the reheater, and an outlet of the reheater is communicated with the water return port. The air conditioner is convenient to install and good in energy-saving effect, and fresh air for dehumidification and cooling can be well provided.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air fans, in particular to a brand-new gradient cascade dual-dehumidification reheating energy-saving fresh air fan. Background Art

[0002] A fresh air fan is an effective air purification device that can circulate indoor air. On the one hand, it discharges the dirty indoor air outdoors, and on the other hand, it inputs the fresh outdoor air into the room after measures such as sterilization, disinfection, and filtration, so that the air in the room is fresh and clean at all times. At present, there are mainly three types of fresh air fans used in the five-constant system on the market, namely dual-cooling-source fresh air fans, direct-expansion fresh air fans, and water-cooled dehumidifying fresh air fans. However, they each have some defects. For example, dual-cooling-source fresh air fans have high noise, direct-expansion fresh air fans consist of indoor and outdoor units and have high requirements for installation space, and water-cooled dehumidifying fresh air fans have limited dehumidification capacity.

[0003] Based on the above problems, we have developed a brand-new gradient cascade fresh air fan, improving the existing fresh air fan and humidification function. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a brand-new gradient cascade dual-dehumidification reheating energy-saving fresh air fan with low noise, convenient installation, good energy-saving effect, and capable of providing fresh air with good dehumidification and cooling functions in view of the deficiencies of the prior art.

[0005] The technical problem to be solved by the utility model is realized through the following technical solutions. The utility model is a brand-new gradient cascade dual-dehumidification reheating energy-saving fresh air fan, including a machine body. An indoor return air inlet and an outdoor fresh air inlet are arranged on one side of the machine body, and an indoor air supply outlet is arranged on the other side of the machine body. A precooler, a dehumidifier, and a reheater are sequentially arranged in the machine body from the side of the outdoor fresh air inlet to the side of the indoor air supply outlet. A heat exchanger is also installed in the machine body. An inlet and a return outlet are arranged at the bottom of the machine body. The inlet is connected to the inlet of the precooler through a water inlet pipe. The outlet of the precooler is connected to the water side inlet of the heat exchanger. The water side outlet of the heat exchanger is connected to the return outlet through a return water pipe. The refrigerant inlet of the heat exchanger is connected to the outlet of the dehumidifier. The refrigerant outlet of the heat exchanger is connected to the inlet of the dehumidifier through a compressor. A refrigerant is contained in the cold cavity of the heat exchanger. A reheating pipe connected to the inlet of the reheater is also connected to the return water pipe, and the outlet of the reheater is connected to the return outlet.

[0006] The technical problem to be solved by the utility model can also be further realized through the following technical solutions. For the above-mentioned brand-new gradient cascade dual-dehumidification reheating energy-saving fresh air fan, the fresh air fan further includes an independently arranged humidifier.

[0007] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, the dehumidifier is an ultrasonic humidifier.

[0008] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, double high-efficiency sterilizing air filters are installed on the body at the indoor return air inlet, outdoor fresh air inlet, and indoor air supply outlet.

[0009] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, the heat exchanger is a plate heat exchanger.

[0010] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, the precooler, dehumidifier, and reheater all include heat exchange coils. A number of heat exchange fins are arranged on the heat exchange coils, and an air flow gap is left between the heat exchange fins.

[0011] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, a three-way regulating valve for flow regulation is also installed at the connection between the return water pipe and the reheating pipe.

[0012] The technical problem to be solved by the present utility model can also be further achieved by the following technical solutions. For the above-mentioned brand-new gradient cascade dual dehumidification reheating energy-saving fresh air machine, a condensate water outlet is also provided at the bottom of the body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. First, the present utility model pre-cools and dehumidifies the air through the precooler, and then deeply dehumidifies and cools the air through the dehumidifier, thus realizing the dual cooling and dehumidification treatment of the air. At the same time, a heat exchanger is built in to exchange the heat brought by the preheated air to the water and the heat released by the condensation of the refrigerant into the return water, making the whole fresh air machine more energy-saving. In addition, a reheating pipe is also provided to facilitate reheating the deeply dehumidified and cooled fresh air by using the heat of the water in the return water pipe, so that the supply air temperature is between 18°C and 20°C, and there will be no over-dehumidification and over-cooling during summer cooling, increasing comfort and reducing the risk of condensation.

[0015] 2. Double high-efficiency sterilizing air filters are installed at both the air inlet and the air supply outlet of the present utility model, which can effectively filter harmful substances such as PM2.5 in the air, keep the indoor air in a clean state all the time, and while ensuring a ventilation rate of once per hour for fresh air in the room, add a mixed air heat recovery function, making the operation more energy-efficient;

[0016] 3. Compared with traditional fresh air fans, the humidification of the present utility model adopts an independent modular ultrasonic humidifier, which can achieve zonal and time-sharing control of indoor humidity, has good dehumidification effect, is more energy-saving and environment-friendly, can keep the indoor humidity in a comfortable state of 35%-65%, and at the same time, this external humidification module eliminates the water leakage problem caused by installation problems of the built-in wet film humidification of the equipment;

[0017] 4. The present utility model integrates the overall design concept. Through careful layout and structure optimization, it realizes the compression of the installation space requirements, can easily adapt to various compact or complex installation environments, has low installation requirements. In addition, the present utility model also particularly considers the noise control problem, and flexibly configures an efficient sound insulation layer outside the equipment, effectively blocking the noise generated during the operation of the equipment and creating a quieter working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the dehumidifier of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Refer to Figure 1-2 , a brand-new gradient cascade double dehumidification and reheating energy-saving fresh air fan, including a machine body 1. An indoor return air inlet 2 and an outdoor fresh air inlet 3 are arranged on one side of the machine body 1 for inputting indoor return air and outdoor fresh air. An indoor air supply outlet 12 is arranged on the other side of the machine body 1 for sending the processed indoor return air and outdoor fresh air into the room. To ensure that the indoor air is always in a clean state, double high-efficiency sterilizing air filters 4 are installed on the machine body 1 at the indoor return air inlet 2, the outdoor fresh air inlet 3, and the indoor air supply outlet 12 for filtering harmful substances such as PM2.5 in the air;

[0022] Inside the machine body 1 from one side of the outdoor fresh air inlet 3 to one side of the indoor air supply outlet 12, a pre-cooler 9, a dehumidifier 10, and a reheater 11 are sequentially arranged. A heat exchanger 8 is also installed inside the machine body 1. An inlet 5 and a return outlet 6 are also arranged at the bottom of the machine body 1 for circulating water to be input into the machine body 1 through the inlet 5, flowing through the pre-cooler 9, the heat exchanger 8, and the reheater 11 in sequence, and finally output from the machine body 1 through the return outlet 6, so as to facilitate using the circulating water to cool and reheat the indoor return air and outdoor fresh air inside the machine body 1. At the same time, a dehumidifier 10 and a compressor 13 are also arranged in cooperation to better provide fresh air for the indoor. Specifically:

[0023] The inlet 5 is connected to the inlet of the pre-cooler 9 through a water inlet pipe for inputting circulating water into the pre-cooler 9, facilitating pre-cooling the indoor return air and outdoor fresh air input into the machine body 1. The outlet of the pre-cooler 9 is connected to the water side inlet of the heat exchanger 8. The water side outlet of the heat exchanger 8 is connected to the return outlet 6 through a return water pipe. The refrigerant inlet of the heat exchanger 8 is connected to the outlet of the dehumidifier 10. The refrigerant outlet of the heat exchanger 8 is connected to the inlet of the dehumidifier 10 through the compressor 13. A refrigerant is contained in the cold chamber of the heat exchanger for using the compressor to input the refrigerant into the dehumidifier 10, facilitating dehumidifying the indoor return air and outdoor fresh air input into the machine body 1. At the same time, the setting of the heat exchanger 8 can use the heat brought by the pre-cooler 9 to the circulating water and the heat released by the condensation of the refrigerant to exchange heat into the return water to make the whole system more energy-saving. Preferably, the heat exchanger 8 is a plate heat exchanger;

[0024] Secondly, a reheating pipe connected to the inlet of the reheater 11 is also connected to the return water pipe. The outlet of the reheater is connected to the return outlet. The outlet of the reheater 11 is connected to the return outlet 6, facilitating inputting the circulating water into the reheater 11 as needed to reheat the indoor return air and outdoor fresh air input into the machine body 1 to avoid over-dehumidifying and over-cooling during summer cooling, increasing comfort and reducing the risk of condensation.

[0025] Preferably, the pre-cooler 9, the dehumidifier 10, and the reheater 11 all include heat exchange coils, and a number of heat exchange fins are arranged on the heat exchange coils, with air flow gaps left between the heat exchange fins.

[0026] To improve the humidification function of the existing fresh air fan, the fresh air fan also includes an independently arranged humidifier 15. Through an independent design, it can achieve more energy-saving and environmental protection by controlling the indoor humidity in different regions and at different times, making the indoor humidity in a comfortable state of 35% - 65%. At the same time, this external humidification module eliminates the water leakage problem caused by the installation of the built-in wet film humidification of the equipment. Preferably, the humidifier 15 is an ultrasonic humidifier 15.

[0027] In actual use, a three-way regulating valve 14 for flow regulation is also installed at the connection between the return water pipe and the reheating pipe, which is used to adjust the water flow in the return water pipe and the reheating pipe as needed by using the three-way regulating valve 14; a condensate water outlet 7 is also provided at the bottom of the machine body 1, which is used to output the condensate water generated in the machine body 1 to the outside.

[0028] The overall working process of the brand-new gradient cascade dual-dehumidification and reheating energy-saving fresh air fan provided by the present utility model is as follows:

[0029] The gradient cascade fresh air composed of the indoor return air inlet 2 and the outdoor fresh air enters the fresh air fan. The circulating water at 15°C - 18°C provided by the heat pump is input into the pre-cooler 9 through the water inlet 5 to pre-cool and cool down the gradient cascade fresh air. Then, the compressor sends the refrigerant into the dehumidifier 10 to further dehumidify and cool down the gradient cascade fresh air, so as to achieve double cooling and dehumidification of the high-temperature and high-humidity air. During this period, the heat exchanger 8 exchanges the heat brought by the pre-heated air to the water and the heat released by the condensation of the refrigerant into the system return water, making the whole system more energy-saving;

[0030] Secondly, the circulating water in the return water pipe can also be input into the reheater 11 as needed, so as to use the return water heat to reheat the fresh air that has been deeply dehumidified and cooled down, so that the supply air temperature is between 18°C and 20°C, and there will be no over-dehumidification and over-cooling during summer cooling, increasing comfort and reducing the risk of condensation.

Claims

1. A new gradient cascade double dehumidification and reheating energy-saving fresh air fan, characterized by: The utility model comprises a machine body, an indoor return air inlet and an outdoor fresh air inlet are arranged on one side of the machine body, an indoor air supply outlet is arranged on the other side of the machine body, a precooler, a dehumidifier and a reheater are arranged in sequence in the machine body from the outdoor fresh air inlet side to the indoor air supply outlet side, a heat exchanger is also installed in the machine body, a water inlet and a return water outlet are also arranged at the bottom of the machine body, the water inlet is connected with the inlet of the precooler through a water inlet pipe, the outlet of the precooler is connected with the water side inlet of the heat exchanger, the water side outlet of the heat exchanger is connected with the return water outlet through a return water pipe, the refrigerant inlet of the heat exchanger is connected with the outlet of the dehumidifier, the refrigerant outlet of the heat exchanger is connected with the inlet of the dehumidifier through a compressor, a reheat pipe connected with the inlet of the reheater is also connected on the return water pipe, and the outlet of the reheater is connected with the return water outlet.

2. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 1 is characterized by: The fresh air fan also includes an independently arranged humidifier.

3. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 2 is characterized by: The humidifier is an ultrasonic humidifier.

4. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 1 is characterized by: Double high-efficiency sterilizing air filters are installed on the machine body at the indoor return air inlet, outdoor fresh air inlet and indoor air supply outlet.

5. The new gradient cascade double dehumidification and reheating energy-saving fresh air fan according to claim 1 is characterized by: The heat exchanger is a plate heat exchanger.

6. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 1 or 5 is characterized in that: The precooler, dehumidifier and reheater all include a heat exchange coil, a plurality of heat exchange fins are arranged on the heat exchange coil, and air flow gaps are left between the heat exchange fins.

7. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 1 is characterized by: A three-way regulating valve for flow regulation is also installed at the connection point between the return pipe and the reheat pipe.

8. The new gradient cascade double dehumidification and reheating energy-saving fresh air blower according to claim 1 is characterized by: A condensed water outlet is also provided at the bottom of the machine body.

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