Fresh air pre-cooling and pre-heating energy-saving device

Abstract

The utility model belongs to the technical field of fresh air circulation, particularly relates to a fresh air pre-cooling and pre-heating energy-saving device, and provides the following scheme aiming at the problems of heat or cold loss, energy consumption increase and use cost increase caused by existing exhaust air and fresh air: the fresh air pre-cooling and pre-heating energy-saving device comprises a fresh air host fixed in a roof; wherein a fresh air inlet pipe and a fresh air outlet pipe which are used for fresh air to enter are fixed to the two ends of the fresh air main machine respectively, and an old air outlet pipe and an old air inlet pipe which are used for old air to be discharged are further fixed to the two ends of the fresh air main machine; the heat circulation assembly is arranged between the old air inlet pipe and the fresh air exhaust pipe and used for transferring the cold energy or heat energy of the old air in the old air inlet pipe into the fresh air in the fresh air exhaust pipe; the device has a remarkable energy-saving effect, and has an important contribution to reducing the energy consumption of a building and improving the energy utilization efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air circulation, in particular to a fresh air precooling and preheating energy-saving device. Background Art

[0002] Fresh air system is an indoor air treatment system, which is mainly used for ventilation, purification and circulation of indoor air. It uses specific equipment and technology to introduce fresh air from the outside into the room, and exhaust the turbid air in the room, thereby improving the indoor air quality. Fresh air system usually consists of air supply system and exhaust system, in which the air supply system is responsible for supplying fresh air into the room, while the exhaust system is responsible for exhausting the turbid air in the room.

[0003] When the fresh air system is in operation, fresh air will be introduced and some old air will be discharged to improve the comfort of indoor air. When the temperature difference between indoor and outdoor is large, the exhaust air and fresh air will cause heat or cold loss. For example, in winter, the exhaust air temperature is significantly higher than the fresh air temperature, causing heat loss; in summer, the exhaust air temperature is lower than the fresh air temperature, causing cold loss, increasing energy consumption, and raising the cost of use. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that exhaust air and fresh air will cause heat or cold loss, increase energy consumption and increase use cost, and proposes a fresh air pre-cooling and pre-heating energy-saving device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fresh air pre-cooling and pre-heating energy-saving device, comprising a fresh air main unit fixed in a roof;

[0007] Wherein, a fresh air inlet pipe and a fresh air exhaust pipe for letting in fresh air are fixed at both ends of the fresh air main unit respectively, and an old air exhaust pipe and an old air inlet pipe for letting out old air are also fixed at both ends of the fresh air main unit;

[0008] A heat circulation component, which is arranged between the old air intake pipe and the new air exhaust pipe and is used to transfer the cold or heat of the old air in the old air intake pipe to the new air in the new air exhaust pipe;

[0009] The fresh air exhaust pipe includes a main fresh air exhaust pipe and a secondary fresh air exhaust pipe. The main fresh air exhaust pipe is used to connect with the fresh air main unit, and the secondary fresh air exhaust pipe is used to discharge fresh air. The old air intake pipe includes a main old air intake pipe and a secondary old air intake pipe. The main old air intake pipe is used to connect with the fresh air main unit, and the secondary old air intake pipe is used to absorb old air.

[0010] In a possible design, the circulation component includes two connection boxes, one of which is fixed between the main fresh air exhaust pipe and the auxiliary fresh air exhaust pipe, and the other is fixed between the main old air intake pipe and the auxiliary old air intake pipe. Bent connecting pipes are fixed in the two connection boxes, and a connecting water pipe is fixed between the two bent connecting pipes. A water pump is provided in the roof, and a water inlet pipe and a drain pipe are fixed to the water inlet and the water outlet of the water pump, respectively. The water inlet pipe and the drain pipe are fixedly connected to the two bent connecting pipes, respectively. The connecting water pipe, the drain pipe, the water inlet pipe and the two bent connecting pipes are all filled with coolant, and the two bent connecting pipes are bent and filled in the two connection boxes for sufficient heat exchange of the coolant.

[0011] Wherein, each of the two connection boxes is provided with a group of heat preservation components for preventing heat loss.

[0012] In a possible design, each group of the thermal insulation components includes thermal insulation cotton, and the thermal insulation cotton is evenly fixed to the inner wall of the connection box.

[0013] In a possible design, the main fresh air exhaust duct and the main old air intake duct are respectively fixed at the upper right corners of the two connecting boxes, the auxiliary fresh air exhaust duct and the auxiliary old air intake duct are respectively fixed at the lower left corners of the two connecting boxes, and the main old air intake duct and the auxiliary old air intake duct are staggeredly connected to the main fresh air exhaust duct and the auxiliary fresh air exhaust duct.

[0014] In a possible design, water pipe insulation sleeves are fixed to the surfaces of the drain pipe, the water inlet pipe and the connecting water pipe, and the three water pipe insulation sleeves are all made of rubber-plastic sponge.

[0015] In a possible design, the two bent connecting tubes are both made of metal copper.

[0016] In the present application, when used in summer, the fresh air host is started to extract the old air in the room through the auxiliary old air intake pipe. In summer, the indoor air temperature is relatively low because the air conditioner is turned on. The auxiliary old air intake pipe sends the old air with lower temperature to the connecting box, cools the coolant in one of the bent connecting pipes, and drives the coolant in the two bent connecting pipes to circulate in an orderly manner through a water pump, so that the cooled coolant moves from one bent connecting pipe to the other bent connecting pipe. At this time, the fresh air host is started to extract fresh air from the outside. When the air passes through the connecting box between the main fresh air exhaust pipe and the auxiliary fresh air exhaust pipe, it contacts the coolant with lower temperature, which effectively reduces the temperature of the fresh air, reduces the load of the indoor air conditioner, and saves resources.

[0017] When used in winter, start the fresh air host to extract the old air in the room through the auxiliary old air intake pipe. In winter, the indoor air temperature is higher because the air conditioner is turned on. The auxiliary old air intake pipe sends the old air with higher temperature to the connecting box, and heats the coolant in one of the bent connecting pipes. The water pump drives the coolant in the two bent connecting pipes to circulate in an orderly manner, so that the heated coolant moves from one bent connecting pipe to another bent connecting pipe. At this time, start the fresh air host to extract fresh air from the outside. When the air passes through the connecting box between the main fresh air exhaust pipe and the auxiliary fresh air exhaust pipe, it comes into contact with the coolant with higher temperature, which effectively increases the temperature of the fresh air. Beneficial Effects

[0018] In the utility model, the fresh air pre-cooling and pre-heating energy-saving device provided realizes the heat exchange between the fresh air and the old air through the heat circulation component, effectively utilizes the energy contained in the old air, and reduces the energy consumption of the fresh air treatment. At the same time, through the design of the insulation component and the water pipe insulation sleeve, the heat loss is reduced and the heat exchange efficiency of the whole device is improved. In addition, the design of the bent connecting pipe allows the coolant to flow fully therein, further improving the effect of the heat exchange. Therefore, the utility model has a significant energy-saving effect and makes an important contribution to reducing the energy consumption of buildings and improving the energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a main perspective view of a fresh air pre-cooling and pre-heating energy-saving device proposed by the utility model;

[0020] Figure 2 This is a cross-sectional view of a fresh air pre-cooling and pre-heating energy-saving device proposed by the utility model;

[0021] Figure 3 It is a partial cross-sectional view of a fresh air precooling and preheating energy-saving device proposed by the utility model.

[0022] In the figure: 1. Fresh air main unit; 2. Fresh air inlet pipe; 21. Main fresh air exhaust pipe; 22. Auxiliary fresh air exhaust pipe; 3. Old air exhaust pipe; 31. Main old air inlet pipe; 32. Auxiliary old air inlet pipe; 4. Connection box; 5. Bending connecting pipe; 6. Water pump; 61. Drain pipe; 62. Water inlet pipe; 7. Connecting water pipe; 8. Water pipe insulation cover. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1: Reference Figure 1-Figure 3, a fresh air precooling and preheating energy-saving device, which is used in the field of fresh air circulation technology, comprises a fresh air main unit 1 fixed in the roof;

[0025] Among them, the two ends of the fresh air host 1 are respectively fixed with a fresh air inlet pipe 2 and a fresh air exhaust pipe for the fresh air to enter, and the two ends of the fresh air host 1 are also fixed with an old air exhaust pipe 3 and an old air inlet pipe for the old air to be discharged;

[0026] A heat circulation component is arranged between the old air intake pipe and the new air exhaust pipe and is used to transfer the cold or heat of the old air in the old air intake pipe to the new air in the new air exhaust pipe;

[0027] The fresh air exhaust pipe includes a main fresh air exhaust pipe 21 and a secondary fresh air exhaust pipe 22, the main fresh air exhaust pipe 21 is used to communicate with the fresh air main unit 1, and the secondary fresh air exhaust pipe 22 is used to discharge fresh air, and the old air intake pipe includes a main old air intake pipe 31 and a secondary old air intake pipe 32, the main old air intake pipe 31 is used to communicate with the fresh air main unit 1, and the secondary old air intake pipe 32 is used to absorb old air;

[0028] The fresh air main unit 1 is firmly installed in the roof. As the core component of the entire device, the fresh air intake pipe 2 and the fresh air exhaust pipe are respectively fixed at both ends of the fresh air main unit 1 to realize the input and exhaust of fresh air. Similarly, the old air exhaust pipe 3 and the old air intake pipe are also installed at both ends of the fresh air main unit 1 for the exhaust and intake of old air.

[0029] In order to realize heat exchange between fresh air and old air, a heat circulation component is set up, which is mainly composed of two connecting boxes 4, one connecting box 4 connects the main fresh air exhaust duct 21 and the auxiliary fresh air exhaust duct 22, and the other connecting box 4 connects the main old air intake duct 31 and the auxiliary old air intake duct 32. A bent connecting tube 5 is fixed inside each connecting box 4. The design of these bent connecting tubes 5 helps the coolant to flow fully therein, thereby realizing effective heat exchange.

[0030] A water pump 6 is also installed in the roof, and its water inlet and water outlet are connected to the two bent connecting pipes 5 through the water inlet pipe 62 and the water outlet pipe 61 respectively. In addition, the two bent connecting pipes 5 are connected through the connecting water pipe 7 to form a complete coolant circulation loop. The coolant circulates in the connecting water pipe 7, the water outlet pipe 61, the water inlet pipe 62 and the two bent connecting pipes 5, effectively transferring the cold or heat in the old air to the new air.

[0031] In order to further improve the efficiency of heat exchange, a group of heat preservation components are arranged inside each connection box 4. These heat preservation components are mainly composed of heat preservation cotton, which are evenly fixed on the inner wall of the connection box 4, effectively reducing the loss of heat.

[0032] During the specific installation, the main fresh air exhaust duct 21 and the main old air intake duct 31 are respectively fixed at the upper right corners of the two connection boxes 4, while the auxiliary fresh air exhaust duct 22 and the auxiliary old air intake duct 32 are respectively fixed at the upper left corners of the two connection boxes 4. This staggered connection design helps to more efficiently exchange heat between the new and old air.

[0033] Example 2: Reference Figure 1-Figure 3 , based on the improvement of embodiment 1: in order to further improve the thermal insulation performance of the whole device, the surfaces of the drain pipe 61, the water inlet pipe 62 and the connecting water pipe 7 are fixed with water pipe insulation sleeves 8. These water pipe insulation sleeves 8 are made of rubber-plastic sponge and have good thermal insulation effect.

[0034] The two bent connecting tubes 5 are made of metal copper because metal copper has good thermal conductivity and can ensure the heat exchange efficiency of the coolant therein.

[0035] However, as is well known to those skilled in the art, the working principles and wiring methods of the fresh air main unit 1 and the water pump 6 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fresh air precooling and preheating energy-saving device, characterized in that: include: A fresh air main unit (1) fixed in the roof; Wherein, a fresh air inlet pipe (2) and a fresh air exhaust pipe for letting in fresh air are fixed at both ends of the fresh air main unit (1), and an old air exhaust pipe (3) and an old air inlet pipe for letting out old air are also fixed at both ends of the fresh air main unit (1); A heat circulation component, which is arranged between the old air intake pipe and the new air exhaust pipe and is used to transfer the cold or heat of the old air in the old air intake pipe to the new air in the new air exhaust pipe; The fresh air exhaust pipe comprises a main fresh air exhaust pipe (21) and a secondary fresh air exhaust pipe (22); the main fresh air exhaust pipe (21) is used to communicate with the fresh air main unit (1); the secondary fresh air exhaust pipe (22) is used to discharge fresh air; the old air intake pipe comprises a main old air intake pipe (31) and a secondary old air intake pipe (32); the main old air intake pipe (31) is used to communicate with the fresh air main unit (1); the secondary old air intake pipe (32) is used to absorb old air.

2. A fresh air precooling and preheating energy-saving device according to claim 1, characterized in that: The circulation component comprises two connection boxes (4), wherein one of the connection boxes (4) is fixed between a main fresh air exhaust pipe (21) and a secondary fresh air exhaust pipe (22), and the other connection box (4) is fixed between a main old air intake pipe (31) and a secondary old air intake pipe (32). A bent connecting pipe (5) is fixed in each of the two connection boxes (4), and a connecting water pipe (7) is fixed between the two bent connecting pipes (5). A water pump (6) is provided in the roof, and a water inlet pipe (62) and a water outlet pipe (61) are respectively fixed to the water inlet and the water outlet of the water pump (6). The water inlet pipe (62) and the water outlet pipe (61) are respectively fixedly connected to the two bent connecting pipes (5). The connecting water pipe (7), the water outlet pipe (61), the water inlet pipe (62) and the two bent connecting pipes (5) are all filled with cooling liquid. The two bent connecting pipes (5) are respectively bent and filled in the two connection boxes (4) for sufficient heat exchange with the cooling liquid. Wherein, each of the two connection boxes (4) is provided with a set of heat insulation components for preventing heat loss.

3. A fresh air precooling and preheating energy-saving device according to claim 2, characterized in that: Each group of the thermal insulation components comprises thermal insulation cotton, and the thermal insulation cotton is evenly fixed to the inner wall of the connection box (4).

4. A fresh air precooling and preheating energy-saving device according to claim 2, characterized in that: The main fresh air exhaust pipe (21) and the main old air intake pipe (31) are respectively fixed at the upper right corners of the two connection boxes (4); the auxiliary fresh air exhaust pipe (22) and the auxiliary old air intake pipe (32) are respectively fixed at the lower left corners of the two connection boxes (4); the main old air intake pipe (31) and the auxiliary old air intake pipe (32) are staggeredly connected to the main fresh air exhaust pipe (21) and the auxiliary fresh air exhaust pipe (22).

5. A fresh air precooling and preheating energy-saving device according to claim 2, characterized in that: Water pipe insulation sleeves (8) are fixed to the surfaces of the drainage pipe (61), the water inlet pipe (62) and the connecting water pipe (7), and the three water pipe insulation sleeves (8) are all made of rubber-plastic sponge.

6. A fresh air precooling and preheating energy-saving device according to claim 2, characterized in that: The two bent connecting tubes (5) are both made of metal copper.

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