Fresh air system for surface treatment workshop

Abstract

The invention discloses a fresh air system for a surface treatment workshop, which relates to the technical field of fresh air systems and comprises a fresh air duct, a filter, a fan, a heat exchange coil, a cooling water tank, a standby hot water tank and a water source heat pump. One end of the fresh air duct serves as an air inlet to communicate with the outside space, and a plurality of air outlets are sequentially formed in the fresh air duct in the length direction of the fresh air duct and used for communicating with the workshop internal space. The filter is arranged in the fresh air duct and located in the upstream air duct of the air outlet. The fan is arranged in the fresh air duct and located in the upstream air duct of the air outlet, and the fan is used for driving air in the external space into the workshop from the fresh air duct; the heat exchange coil is arranged in the fresh air duct and located in the upstream air duct of the air outlet. The water source heat pump is used for recycling heat in the cooling water and then discharging the cooling water into the cooling water tank; the water source heat pump is further used for recycling heat of the electroplating liquid in the electroplating bath and heating water in the standby hot water tank. The energy consumption can be reduced, and the air quality in a workshop is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air systems, and particularly to a fresh air system for a surface treatment workshop. Background Art

[0002] Fresh air systems are usually equipped in surface treatment workshops to provide fresh air for the workshops. Some fresh air systems are equipped with heat exchangers to cool and heat the fresh air. However, the cold energy or heat energy required by the heat exchangers needs to be prepared in advance by refrigerators or heaters, which greatly increases the energy consumption. Summary of the Invention

[0003] The purpose of the present invention is to provide a fresh air system for a surface treatment workshop to solve the problems existing in the above-mentioned prior art, reduce energy consumption, and improve the air quality in the workshop.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The present invention provides a fresh air system for a surface treatment workshop, including: a fresh air duct, a filter, a fan, a heat exchange coil, a cooling water tank, a standby hot water tank, and a water source heat pump. At least one end of the fresh air duct is used as an air inlet and communicates with the external space. A plurality of air outlets are sequentially arranged along the length direction of the fresh air duct, and the air outlets are used to communicate with the internal space of the workshop; the filter is arranged in the fresh air duct and is located in the upstream duct of the air outlet; the fan is arranged in the fresh air duct and is located in the upstream duct of the air outlet, and the fan is used to drive the air in the external space from the fresh air duct to the workshop; the heat exchange coil is arranged in the fresh air duct and is located in the upstream duct of the air outlet; the cooling water tank is communicated with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop; the standby hot water tank is communicated with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop; the water source heat pump is used to recover the heat in the cooling water and then discharge the cooling water into the cooling water tank; the water source heat pump is also used to recover the heat of the electroplating solution in the electroplating tank and heat the water in the standby hot water tank.

[0006] Preferably, an exhaust gas emission system is further included, and the exhaust gas emission system is used to extract the air in the workshop, and the total amount of gas discharged by the exhaust gas emission system is the same as the total amount of gas transported into the workshop by the fan.

[0007] Preferably, the water source heat pump is also used to recover the heat in the air in the workshop and then discharge the cold air into the workshop.

[0008] Preferably, the exhaust gas emission system has a plurality of air extraction ports, the air extraction ports are opened on the side wall of the electroplating tank, and when there is electroplating solution in the electroplating tank, the air extraction ports are located above the liquid level of the electroplating solution in the electroplating tank.

[0009] Preferably, the filter is a coarse filter.

[0010] Preferably, a humidifier is further provided in the fresh air duct, and the humidifier is located in the upstream duct of the air outlet.

[0011] Preferably, an air injection pipe is connected to the air outlet of the fresh air duct, and one end of the air injection pipe away from the air outlet extends towards the middle of the workshop.

[0012] Preferably, both the fresh air duct and the air injection pipe are made of flame-retardant materials.

[0013] Preferably, an extension pipe is further connected to the fresh air duct, an air injection pipe is provided on the extension pipe, and the air injection pipe on the extension pipe extends into the office.

[0014] Preferably, four fresh air ducts are provided, and a fan, a filter and a heat exchange coil are provided in each fresh air duct. Two of the fresh air ducts are arranged at the top on one side of the workshop, and the other two fresh air ducts are arranged at the top on the other side of the workshop. The fresh air ducts arranged on the same side are coaxially arranged.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] Since in the surface treatment workshop, before electroplating the surface of the workpiece, for example, before going to work in the morning, it is necessary to heat the electroplating solution first to make it reach the required temperature. The present invention uses the hot water in the standby hot water tank to exchange heat with the electroplating solution to heat the electroplating solution, and the heat of the hot water in the standby hot water tank comes from the heat recovered by the water source heat pump from the cooling water. After the heat is recovered, the cooling water is discharged into the cooling water tank for standby. When the temperature in the workshop is relatively high, the cooling water in the cooling water tank can be discharged into the heat exchange coil in the fresh air duct to cool the fresh air. After electroplating is completed and there is no electroplating task within a few hours, for example, after work in the afternoon, it is necessary to cool the electroplating solution to reduce the volatilization of acid and alkali-containing gases. When cooling, the water source heat pump is used to recover the heat of the electroplating solution in the electroplating tank and heat the water in the standby hot water tank. When the temperature in the workshop is relatively low, the hot water in the standby hot water tank can be discharged into the heat exchange coil in the fresh air duct to heat and raise the temperature of the fresh air. Therefore, the solution provided by the present application does not need to specially set up a refrigerating machine or a heating machine to produce cold energy or heat energy, thus reducing energy consumption. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a fresh air system for a surface treatment workshop provided by an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the heat energy and cold energy recovery route;

[0020] In the figure: 1 - fresh air duct; 2 - waste gas emission system; 3 - electroplating tank; 4 - extension pipe; 5 - office; 6 - air jet pipe; 7 - water source heat pump; 9 - cooling water tank; 10 - standby hot water tank; 11 - heat exchange coil. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0023] The following will be combined with Figure 1 and Figure 2 , to describe the embodiments of the present invention.

[0024] The present invention provides a fresh air system for a surface treatment workshop, comprising: a fresh air duct 1, a filter, a fan, a heat exchange coil 11, a cooling water tank 9, a standby hot water tank 10, and a water source heat pump 7. At least one end of the fresh air duct 1 serves as an air inlet and communicates with the external space, and a plurality of air outlets are sequentially arranged along the length direction of the fresh air duct 1, and the air outlets are used to communicate with the internal space of the workshop; the filter is arranged in the fresh air duct 1 and is located in the upstream air duct of the air outlet; the fan is arranged in the fresh air duct 1 and is located in the upstream air duct of the air outlet, and the fan is used to drive the air in the external space from the fresh air duct 1 into the workshop; the heat exchange coil 11 is arranged in the fresh air duct 1 and is located in the upstream air duct of the air outlet; the cooling water tank 9 is communicated with both ends of the heat exchange coil 11 to form a loop, and a pump is arranged in the loop; the standby hot water tank 10 is communicated with both ends of the heat exchange coil 11 to form a loop, and a pump is arranged in the loop; the water source heat pump 7 is used to recover the heat in the cooling water and then discharge the cooling water into the cooling water tank 9; the water source heat pump 7 is also used to recover the heat of the electroplating solution in the electroplating tank 3 and heat the water in the standby hot water tank 10.

[0025] Since in the surface treatment workshop, before plating the surface of the workpiece, for example, before starting work in the morning, it is necessary to heat the electroplating solution to the required temperature first. The present invention uses the hot water in the standby hot water tank 10 to exchange heat with the electroplating solution to heat the electroplating solution, and the heat of the hot water in the standby hot water tank 10 comes from the heat recovered by the water source heat pump 7 from the cooling water. After the heat is recovered, the cooling water is discharged into the cooling water tank 9 for standby. When the temperature in the workshop is relatively high, the cooling water in the cooling water tank 9 can be discharged into the heat exchange coil 11 in the fresh air duct 1 to cool the fresh air. After electroplating is completed and there is no electroplating task within a few hours, for example, after work in the afternoon, it is necessary to cool the electroplating solution to reduce the volatilization of acid and alkali gases. When cooling, the water source heat pump 7 is used to recover the heat of the electroplating solution in the electroplating tank 3 and heat the water in the standby hot water tank 10. When the temperature in the workshop is relatively low, the hot water in the standby hot water tank 10 can be discharged into the heat exchange coil 11 in the fresh air duct 1 to heat and raise the temperature of the fresh air. Therefore, the solution provided by the present application does not require a dedicated refrigerating machine or heating machine to produce cold energy or heat energy, thus reducing energy consumption.

[0026] Specifically, the water source heat pump 7 has a cold channel, a hot channel, and a heat exchange module. The heat exchange module is used to "transfer" the heat in the cold channel to the hot channel. The hot channel and the standby hot water tank 10 form a circulation loop. The cooling water tank 9 can form a circulation loop with the cold channel of the water source heat pump 7. The inlet of the cold channel of the water source heat pump 7 is connected to the cooling water in the cooling water tank 9 to recover the heat in the cooling water. Of course, the heat in the standby hot water tank 10 is not limited to recovering the heat of the cooling water in the cooling water tank 9, but can also recover the heat of the cooling water discharged from the refrigerator in the anodic oxidation production line.

[0027] In some embodiments, the standby hot water tank 10 is also connected to the heat exchange coil at the bottom of the electroplating tank 3. Before going to work, first use the hot water in the standby hot water tank 10 and the heat exchange coil to heat the electroplating solution. After heating to a certain extent, then use the high-temperature hot water in other hot water tanks to heat the electroplating solution. The hot water in the standby hot water tank 10 still has a certain amount of heat, and this heat is used to heat the fresh air through the heat exchange coil in the fresh air duct.

[0028] In some embodiments, the embodiment of the present invention further includes an exhaust gas emission system 2. The exhaust gas emission system 2 is used to extract the air in the workshop. The total amount of gas discharged by the exhaust gas emission system 2 is the same as the total amount of gas delivered into the workshop by the fan. It can be understood that the "same" here means basically the same, because in the actual application process, it is difficult to make the intake air volume and the exhaust air volume exactly the same.

[0029] In this embodiment, the air outside the workshop and the air inside the workshop form a gas cycle, which accelerates the replacement efficiency of the air in the workshop, and thus improves the efficiency and quality of air purification.

[0030] In some embodiments, the water source heat pump 7 is also used to recover the heat in the air in the workshop and then discharge the cold air into the workshop.

[0031] In this embodiment, when the temperature is relatively high in summer, the water source heat pump 7 can be used to recover the heat in the air and then discharge the low-temperature air into the workshop. This accelerates the speed of temperature reduction in the workshop, and the heat recovered by the water source heat pump 7 can be used to heat the hot water in the standby hot water tank 10 to increase its temperature.

[0032] In some embodiments, the exhaust gas emission system 2 has a plurality of air extraction ports. The air extraction ports are opened on the side wall of the electroplating tank 3. When there is electroplating solution in the electroplating tank 3, the air extraction ports are located above the liquid level of the electroplating solution in the electroplating tank 3.

[0033] In this embodiment, since most of the toxic and harmful gases in the workshop are generated in the electroplating tank 3, therefore, in this embodiment, the toxic and harmful gases generated in the electroplating tank 3 can be extracted as quickly as possible to prevent their large-area diffusion from affecting the health of employees.

[0034] In some embodiments, the filter is a coarse filter.

[0035] This embodiment realizes the primary and medium efficiency filtration of the fresh air.

[0036] In some embodiments, a humidifier is further provided in the fresh air duct 1. The humidifier is located in the upstream duct of the air outlet.

[0037] This embodiment realizes the humidification of the fresh air to further improve the comfort of the staff in the workshop.

[0038] In some embodiments, an air outlet of the fresh air duct 1 is connected to an air injection pipe 6, and one end of the air injection pipe 6 far from the air outlet extends towards the middle of the workshop.

[0039] This embodiment helps the fresh air to spread towards the middle of the workshop.

[0040] In some embodiments, both the fresh air duct 1 and the air injection pipe 6 are made of flame-retardant materials.

[0041] This embodiment improves the safety of the workshop.

[0042] In some embodiments, the fresh air duct 1 is further connected to an extension pipe 4, an air injection pipe 6 is arranged on the extension pipe 4, and the air injection pipe 6 on the extension pipe 4 extends into the office 5.

[0043] This embodiment can replace the air in the two-side offices 5, and there is no need to separately set air-conditioning equipment such as air conditioners in the offices 5.

[0044] In some embodiments, four fresh air ducts 1 are provided, a fan, a filter and a heat exchange coil 11 are arranged in each fresh air duct 1, two of the fresh air ducts 1 are arranged at the top of one side of the workshop, and the other two fresh air ducts 1 are arranged at the top of the other side of the workshop, and the fresh air ducts 1 arranged on the same side are coaxially arranged.

[0045] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A fresh air system for a surface treatment workshop, characterized in that: Comprising: A fresh air duct, at least one end of which serves as an air inlet and is communicated with the external space. A plurality of air outlets are sequentially arranged along the length direction of the fresh air duct, and the air outlets are used for communicating with the internal space of the workshop; A filter, arranged in the fresh air duct and located in the upstream duct of the air outlet; A fan, arranged in the fresh air duct and located in the upstream duct of the air outlet. The fan is used for driving the air in the external space from the fresh air duct to the workshop; A heat exchange coil, arranged in the fresh air duct and located in the upstream duct of the air outlet; A cooling water tank, communicated with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop; A spare hot water tank, communicated with both ends of the heat exchange coil to form a loop, and a pump is arranged in the loop; A water source heat pump, which is used for recovering the heat in the cooling water and then discharging the cooling water into the cooling water tank; the water source heat pump is also used for recovering the heat of the electroplating solution in the electroplating tank and heating the water in the spare hot water tank.

2. The fresh air system for the surface treatment workshop according to claim 1, wherein: It further includes an exhaust gas emission system, which is used for extracting the air in the workshop, and the total amount of the gas emitted by the exhaust gas emission system is the same as the total amount of the gas transported into the workshop by the fan.

3. The fresh air system for a surface treatment workshop according to claim 2, wherein: The water source heat pump is also used for recovering the heat in the air in the workshop and then discharging the cold air into the workshop.

4. The fresh air system for the surface treatment workshop according to claim 2, characterized in that: The exhaust gas emission system has a plurality of air extraction ports, which are opened on the side wall of the electroplating tank. When there is electroplating solution in the electroplating tank, the air extraction ports are located above the liquid level of the electroplating solution in the electroplating tank.

5. The fresh air system for a surface treatment workshop according to claim 2, wherein: The filter is a coarse filter.

6. The fresh air system for a surface treatment workshop according to claim 2, characterized in that: A humidifier is also arranged in the fresh air duct, and the humidifier is located in the upstream duct of the air outlet.

7. The fresh air system for a surface treatment workshop according to claim 2, wherein: The air outlet of the fresh air duct is communicated with a jet pipe, and the end of the jet pipe far away from the air outlet extends towards the middle of the workshop.

8. The fresh air system for a surface treatment workshop according to claim 7, characterized in that: Both the fresh air duct and the jet pipe are made of flame-retardant materials.

9. The fresh air system for the surface treatment workshop according to claim 7, wherein: The fresh air duct is also communicated with an extension pipe, and a jet pipe is arranged on the extension pipe, and the jet pipe on the extension pipe extends into the office.

10. The fresh air system for the surface treatment workshop according to claim 1, characterized in that: Four fresh air ducts are provided, and a fan, a filter and a heat exchange coil are arranged in each fresh air duct. Two of the fresh air ducts are arranged at the top on one side of the workshop, and the other two fresh air ducts are arranged at the top on the other side of the workshop. The fresh air ducts arranged on the same side are coaxially arranged.

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