An air temperature and humidity adjusting system for oil mist treatment in a constant temperature and humidity processing workshop

Abstract

The utility model belongs to oil mist purification treatment and air temperature and humidity regulation technical field discloses a kind of air temperature and humidity regulation system of constant temperature and humidity machine processing workshop oil mist treatment. Including processing workshop, oil mist purifier, combined air conditioning unit;Oil mist pipeline is arranged in processing workshop, and the oil mist pipeline branch tapping several oil mist pipeline branch pipes is arranged in processing workshop, each oil mist pipeline branch pipe is connected with the oil mist discharge interface of CNC machining center in processing workshop, and the end of oil mist pipeline is sequentially connected with oil mist purifier, return air fan;The other end of return air fan is connected with bypass pipeline and return air pipeline respectively through pipeline;Return air pipeline is connected with the return air inlet of combined air conditioning unit, and the fresh air outlet of fresh air fan of combined air conditioning unit is connected with air supply pipeline through pipeline.The system makes the whole workshop to keep in suitable temperature and humidity conditions, while also guaranteeing constant temperature and humidity working environment in oil mist treatment.

Description

Technical Field

[0001] This utility model belongs to the field of oil mist purification and air temperature and humidity control technology. It relates to an air temperature and humidity control system for oil mist purification in a constant temperature and humidity machining workshop. Background Technology

[0002] Precision components require extremely precise environmental temperature and humidity control during machining; excessively high or low temperatures and humidity can negatively impact machining accuracy. Furthermore, high-speed and ultra-high-speed CNC machine tools generate significant cutting heat during machining processes such as turning, milling, drilling, and grinding. The cutting fluid used for lubrication and cooling readily vaporizes during processing, creating a large amount of oil mist particles in the air. This oil mist typically contains chemicals such as dimer acids, polybutene, and dyes, which can readily produce toxic components like benzo[a]pyrene, polychlorinated biphenyls (PCBs) through fission, endangering the health of workshop workers. Oil mist suspended in the workshop, adhering to the outer surfaces of machine tools and heat exchangers, increases thermal resistance, reduces equipment lifespan, and can cause malfunctions in the workshop's electrical and machine tool circuitry over time. Given the current workshop conditions, maintaining a constant temperature and humidity environment has become essential for ensuring precision. Simultaneously, it is necessary to purify the machining oil mist to provide a clean and comfortable working environment for workshop operators. Therefore, there is an urgent need to develop a system that can effectively manage oil mist, maintain constant temperature and humidity conditions in the workshop, and has a small footprint. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide a constant temperature and humidity machine shop oil mist treatment air temperature and humidity control system. This system keeps the entire workshop under suitable working temperature and humidity conditions. Through its structure, it saves heat loss, reduces costs and increases efficiency. Moreover, the overall layout occupies a small area and ensures a constant temperature and humidity working environment while treating oil mist.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a constant temperature and humidity machining workshop oil mist control air temperature and humidity regulation system, including a machining workshop, an oil mist purifier, a return air fan, and a combined air conditioning unit; the oil mist purifier, return air fan, and combined air conditioning unit are set outside the machining workshop; an oil mist pipe is set inside the machining workshop, and the oil mist pipe set inside the machining workshop is connected to several oil mist pipe branches, each oil mist pipe branch is connected to the oil mist exhaust interface of the CNC machining center in the machining workshop, and the end of the oil mist pipe is connected to the oil mist purifier and the return air fan in sequence; the other end of the return air fan is connected to the bypass pipe and the return air pipe through pipes respectively; the return air pipe is connected to the return air inlet of the combined air conditioning unit, and the fresh air outlet of the fresh air fan of the combined air conditioning unit is connected to the supply air pipe through pipes, and the end of the supply air pipe is set inside the machining workshop.

[0005] The modular air conditioning unit includes a housing, inside which are arranged a return air handling chamber, a fresh air handling chamber, a plate heat recovery chamber, an exhaust chamber, and a fresh air exhaust chamber. The return air handling chamber and the fresh air handling chamber are located above the exhaust chamber and the fresh air exhaust chamber, and the return air handling chamber and the fresh air handling chamber are arranged side by side. The exhaust chamber and the fresh air exhaust chamber are arranged side by side. The plate heat recovery chamber is connected to the return air handling chamber, the fresh air handling chamber, the exhaust chamber, and the fresh air exhaust chamber, respectively.

[0006] A primary filter is installed inside the return air treatment chamber, and a return air inlet is installed on the top surface of the return air treatment chamber. The return air treatment chamber is used to transfer the heat-carrying return air transported by the return air duct to the plate heat recovery chamber after being filtered by the primary filter.

[0007] A primary filter is installed inside the fresh air handling chamber, and a fresh air inlet is installed on the side wall of the fresh air handling chamber, which is connected to the fresh air inlet duct. The fresh air handling chamber is used to filter the incoming fresh air and then transfer it to the plate heat recovery chamber.

[0008] The fresh air intake duct at the fresh air inlet can be equipped with either an electric air valve C or a manual butterfly valve, depending on the operating conditions (no special restrictions are made here).

[0009] For the primary filter, a filter with a G3 filter element is preferred.

[0010] A plate heat exchanger (commercially available product) is installed inside the plate heat recovery chamber. It is used to exchange heat between the return air and fresh air transported in the return air duct.

[0011] An exhaust fan is installed inside the exhaust chamber, and an exhaust outlet is provided on the inner side wall of the exhaust chamber. The exhaust outlet is connected to the chimney through an exhaust pipe, and an electric air valve B is installed on the exhaust pipe.

[0012] The fresh air exhaust chamber is sequentially equipped with a fresh air fan, a humidification section, an electric heating section, and a surface cooling section; the surface cooling section is located on the side adjacent to the plate heat recovery chamber; the fresh air fan is located on the side adjacent to the fresh air outlet, and the fresh air outlet is located on the side wall of the fresh air exhaust chamber. An electric damper (D) or a manual butterfly valve can be selected on the duct connecting the fresh air outlet and the supply air duct, depending on the operating conditions (no special restrictions are made here).

[0013] The fresh air fan, humidification section, electric heating section, and surface cooling section are connected and can be ventilated by gas.

[0014] The humidification section includes the humidifier. Lotus humidifiers are a preferred manufacturer.

[0015] The electric heating section includes an electric heater. The preferred model is PTC / 85-1:2:4.

[0016] The cooling section includes the chilled water coil, which is connected to the chilled water source via a chilled water inlet pipe. The other end of the chilled water coil is connected to the chilled water outlet pipe, which is equipped with an electric two-way regulating valve.

[0017] Furthermore, the number of branch pipes in the oil mist pipeline is the same as the number in the CNC machining center.

[0018] Furthermore, manual airflow regulating valves are installed on all branch pipes of the oil mist pipeline.

[0019] Furthermore, several diffusers are installed on the air supply ducts within the processing workshop.

[0020] Furthermore, an electric air valve A is installed on the return air duct.

[0021] Furthermore, an electric bypass valve is installed on the bypass pipe, and the end of the bypass pipe is connected to the chimney.

[0022] Furthermore, temperature and humidity sensors are installed on the walls of the processing workshop. The specific installation location is not limited and can be selected according to the working conditions.

[0023] The temperature and humidity requirements for the processing workshop of this utility model are: temperature requirement 22℃±3℃, humidity requirement 45%-75%.

[0024] The system provided by this utility model is also configured with an existing PLC control system. The diffuser, oil mist purifier, return air fan, electric air valve A, electric air valve B, electric bypass valve, fresh air fan, humidifier, electric heater, electric two-way regulating valve, and exhaust fan are respectively connected to the PLC control system. Except for the special limitations of this utility model, no specific model is limited, as long as the working function is realized.

[0025] The advantages of this utility model compared with the prior art are:

[0026] A temperature and humidity control system for oil mist treatment in a machining workshop is disclosed. This system features a simple structure, convenient operation, and is easy to promote and apply. Feedback after on-site implementation has been positive. The system includes an oil mist purification system that purifies oil mist generated by the CNC machining center before discharging it in compliance with standards. A plate-type heat recovery chamber allows for heat recovery from the exhaust air of the oil mist purification system, achieving energy savings. A combined air conditioning unit provides primary filtration, cooling, temperature and humidity control for fresh air. The system includes a bypass design, allowing for assessment of the actual temperature and humidity of the exhaust and fresh air to determine the necessity of heat recovery. This system maintains the workshop at a suitable temperature and humidity for operation. Its structure minimizes heat loss, reducing costs and increasing efficiency. The overall layout is compact, ensuring a constant temperature and humidity working environment while simultaneously treating oil mist. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a schematic diagram of an air temperature and humidity control system for oil mist control in a constant temperature and humidity machining workshop, which is based on the present invention.

[0029] Figure 2 This is a schematic diagram of a combined air conditioning unit.

[0030] In the diagram: 1. CNC machining center; 2. Manual air volume regulating valve; 3. Diffuser; 4. Supply air duct; 5. Oil mist duct; 6. Oil mist purifier; 7. Return air fan; 8. Electric air valve A; 9. Bypass duct; 10. Combined air conditioning unit; 11. Electric air valve B; 12. Electric bypass valve; 13. Chimney; 10.1. Primary filter; 10.2. Plate heat recovery chamber; 10.3. Fresh air fan; 10.4. Humidification section; 10.5. Electric heating section; 10.6. Surface cooling section; 10.7. Electric two-way regulating valve; 10.8. Exhaust fan. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

[0032] Example 1

[0033] A temperature and humidity control system for oil mist control in a constant temperature and humidity machining workshop, such as Figure 1-2 As shown, the system includes a processing workshop, an oil mist purifier 6, a return air fan 7, and a combined air conditioning unit 10. The oil mist purifier 6, return air fan 7, and combined air conditioning unit 10 are located outside the processing workshop. An oil mist duct 5 is installed inside the processing workshop. The oil mist duct 5 is connected to several branch oil mist ducts. Each branch oil mist duct is connected to the oil mist exhaust port of the CNC machining center 1 inside the processing workshop. The ends of the oil mist duct 5 are sequentially connected to the oil mist purifier 6 and the return air fan 7. The other end of the return air fan 7 is connected to the bypass duct 9 and the return air duct through pipes. The return air duct is connected to the return air inlet of the combined air conditioning unit 10. The fresh air outlet of the fresh air fan 10.3 of the combined air conditioning unit 10 is connected to the supply air duct 4 through pipes. The end of the supply air duct 4 is located inside the processing workshop.

[0034] The modular air conditioning unit 10 includes a housing, inside which are arranged a return air treatment chamber, a fresh air treatment chamber, a plate heat recovery chamber 10.2, an exhaust chamber, and a fresh air exhaust chamber. The return air treatment chamber and the fresh air treatment chamber are located above the exhaust chamber and the fresh air exhaust chamber, and the return air treatment chamber and the fresh air treatment chamber are arranged side by side, and the exhaust chamber and the fresh air exhaust chamber are arranged side by side. The plate heat recovery chamber 10.2 is connected to the return air treatment chamber, the fresh air treatment chamber, the exhaust chamber, and the fresh air exhaust chamber, respectively.

[0035] A primary filter 10.1 is installed inside the return air treatment chamber, and a return air inlet is installed on the top surface of the return air treatment chamber. The return air treatment chamber is used to transfer the heat-carrying return air transported by the return air duct to the plate heat recovery chamber 10.2 after being filtered by the primary filter 10.1.

[0036] A primary filter 10.1 is installed inside the fresh air handling chamber, and a fresh air inlet is provided on the side wall of the fresh air handling chamber, which is connected to the fresh air inlet duct. The fresh air handling chamber is used to filter the incoming fresh air and then transfer it to the plate heat recovery chamber 10.2.

[0037] The fresh air intake duct at the fresh air inlet can be equipped with either an electric air valve C or a manual butterfly valve, depending on the operating conditions (no special restrictions are made here).

[0038] The primary filter 10.1 is preferably a filter with a G3 filter element.

[0039] A plate heat exchanger (commercially available product) is installed inside the plate heat recovery chamber 10.2. It is used to exchange heat between the return air and fresh air transported by the return air duct.

[0040] An exhaust fan 10.8 is installed inside the exhaust chamber, and an exhaust outlet is provided on the inner side wall of the exhaust chamber. The exhaust outlet is connected to the chimney 13 through an exhaust pipe, and an electric air valve B11 is installed on the exhaust pipe.

[0041] The fresh air exhaust chamber is sequentially equipped with a fresh air fan 10.3, a humidification section 10.4, an electric heating section 10.5, and a surface cooling section 10.6; the surface cooling section 10.6 is located on one side adjacent to the plate heat recovery chamber 10.2; the fresh air fan 10.3 is located on one side adjacent to the fresh air outlet, and the fresh air outlet is located on the side wall of the fresh air exhaust chamber. An electric damper D or a manual butterfly valve can be selected on the pipe connecting the fresh air outlet and the supply air duct 4, depending on the operating conditions (no special limitation is made here).

[0042] The fresh air fan 10.3, humidification section 10.4, electric heating section 10.5, and surface cooling section 10.6 are connected to allow gas to pass through.

[0043] Humidification section 10.4 includes a humidifier. The preferred manufacturer is Lotus humidifiers.

[0044] The electric heating section 10.5 includes an electric heater. The preferred model is PTC / 85-1:2:4.

[0045] The surface cooling section 10.6 includes the chilled water coil, which is connected to the chilled water source through the chilled water inlet pipe. The other end of the chilled water coil is connected to the chilled water outlet pipe, and an electric two-way regulating valve 10.7 is installed on the chilled water outlet pipe.

[0046] The number of branch pipes in the oil mist pipeline is the same as the number in CNC machining center 1.

[0047] Manual airflow regulating valve 2 is installed on each branch pipe of the oil mist pipeline.

[0048] Several diffusers 3 are installed on the air supply duct 4 located in the processing workshop.

[0049] An electric air valve A8 is installed on the return air duct.

[0050] An electric bypass valve 12 is installed on the bypass pipe 9, and the end of the bypass pipe 9 is connected to the chimney 13.

[0051] Temperature and humidity sensors are installed on the walls of the processing workshop. The specific installation location is not limited and can be selected according to the working conditions.

[0052] The temperature and humidity requirements for the processing workshop of this utility model are: temperature requirement 22℃±3℃, humidity requirement 45%-75%.

[0053] The system provided by this utility model is also equipped with an existing PLC control system. The diffuser 3, oil mist purifier 6, return air fan 7, electric air valve A8, electric air valve B11, electric bypass valve 12, fresh air fan 10.3, humidifier, electric heater, electric two-way regulating valve 10.7, and exhaust fan 10.8 are respectively connected to the PLC control system. Except for the special limitations of this utility model, there is no limitation on a specific model, as long as its working function is realized.

[0054] This utility model provides a constant temperature and humidity air temperature and humidity control system for oil mist control in a machining workshop. First, the oil mist generated during the machining process of the CNC machining center 1 (a commercially available product) is purified by an oil mist purifier 6 and a return air fan 7. The purified return air exchanges heat with fresh air through the plate heat recovery chamber 10.2 in the combined air conditioning unit 10, achieving heat recovery before being discharged through the chimney 13. The fresh air, after exchanging heat with the return air, passes through the surface cooling section 10.6, the electric heating section 10.5, and the humidification section 10.4, and then is evenly distributed into the machining workshop through the fresh air fan 10.3, the air supply duct 4, and the diffuser 3. The combined air conditioning unit 10 can provide constant temperature and humidity fresh air to the workshop, thereby achieving the effect of constant temperature and humidity control. When the humidity and temperature are not monitored to be within acceptable limits, the surface cooling section 10.6 can be adjusted by adjusting the electric two-way regulating valve 10.7, the electric heating section 10.5 can be adjusted by adjusting the electric heater, and the humidity can be adjusted by adjusting the humidifier. More specifically, as... Figure 1As shown, the oil mist generated during the machining process of CNC machining center 1 is collected under the negative pressure of the return air fan 7 and enters the oil mist purifier 6 through the oil mist pipe 5. The oil mist is purified in the oil mist purifier 6, and the purified air is discharged in compliance with standards through the return air fan 7, bypass pipe 9, and chimney 13, or it exchanges heat with fresh air through the combined air conditioning unit 10 to achieve heat recovery before being discharged in compliance with standards through chimney 13. Each branch pipe of the oil mist pipe connected to CNC machining center 1 has a corresponding manual airflow regulating valve 2. By adjusting the opening of the valve plate of the manual airflow regulating valve 2, the pressure can be balanced to ensure that the exhaust airflow of each CNC machining center 1 is the same, thereby improving the exhaust effect. The oil mist purifier 6 adopts a mechanical filter type oil mist purifier, which has high purification efficiency (purification efficiency ≥99%) and stable operation. Figure 2 As shown, under the negative pressure of the fresh air fan 10.3, the fresh air first passes through the pre-filter 10.1 to remove large particles of dust. Then, it exchanges heat with the return air through the plate heat recovery chamber 10.2 to recover the cold or heat energy from the return air. After heat exchange, the fresh air undergoes temperature and humidity regulation through the cooling section 10.6, the electric heating section 10.5, and the humidification section 10.4. The cooling section 10.6 uses a chilled water coil connected to a chilled water source. The cooling temperature of the fresh air can be controlled by adjusting the opening of the electric two-way regulating valve 10.7. The electric heating section 10.5 not only increases the temperature of the fresh air but also reduces its relative humidity through heating. When the humidity of the fresh air is lower than the constant humidity, it can be humidified through the humidification section 10.4 to increase the relative humidity. The return air fan 7, the fresh air fan 10.3, and the exhaust fan 10.8 are all variable frequency fans, allowing for variable frequency operation and energy saving. Fresh air, after heat recovery and temperature and humidity regulation by the combined air conditioning unit 10, is evenly distributed into the workshop through the air supply duct 4 and diffuser 3, thereby regulating the workshop's temperature and humidity. Figure 1 Figure 2 As shown, when the outdoor air temperature and humidity are closer to the constant temperature and humidity requirements of the workshop than the return air temperature and humidity at the outlet of the return air fan 7, the electric bypass valve 12 opens, and the electric air valves A8 and B11 close. The return air is directly discharged through the bypass pipe 9 and the chimney 13. At this time, there is no need to exchange heat through the plate heat recovery section 10.2 of the combined air conditioning unit 10.

[0055] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A temperature and humidity control system for oil mist control in a constant temperature and humidity machining workshop, characterized in that, The system includes a processing workshop, an oil mist purifier (6), a return air fan (7), and a combined air conditioning unit (10). The oil mist purifier (6), the return air fan (7), and the combined air conditioning unit (10) are located outside the processing workshop. An oil mist duct (5) is installed inside the processing workshop. The oil mist duct (5) installed inside the processing workshop is connected to several oil mist duct branches. Each oil mist duct branch is connected to the oil mist exhaust interface of the CNC machining center (1) inside the processing workshop. The end of the oil mist duct (5) is connected to the oil mist purifier (6) and the return air fan (7) in sequence. The other end of the return air fan (7) is connected to the bypass duct (9) and the return air duct through a pipeline. The return air duct is connected to the return air inlet of the combined air conditioning unit (10). The fresh air outlet of the fresh air fan (10.3) of the combined air conditioning unit (10) is connected to the supply air duct (4) through a pipeline. The end of the supply air duct (4) is located inside the processing workshop.

2. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 1, characterized in that it is a combined system. The air conditioning unit (10) includes a housing, which contains a return air treatment chamber, a fresh air treatment chamber, a plate heat recovery chamber (10.2), an exhaust chamber, and a fresh air exhaust chamber. The return air treatment chamber and the fresh air treatment chamber are located above the exhaust chamber and the fresh air exhaust chamber. The return air treatment chamber and the fresh air treatment chamber are arranged side by side, and the exhaust chamber and the fresh air exhaust chamber are arranged side by side. The plate heat recovery chamber (10.2) is connected to the return air treatment chamber, the fresh air treatment chamber, the exhaust chamber, and the fresh air exhaust chamber, respectively.

3. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 1, characterized in that, Manual air volume regulating valves (2) are installed on all branch pipes of the oil mist pipeline.

4. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 1, characterized in that, Several diffusers (3) are installed on the air supply duct (4) in the processing workshop.

5. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 1, characterized in that, An electric air valve A(8) is installed on the return air duct.

6. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 1, characterized in that, An electric bypass valve (12) is installed on the bypass pipe (9), and the end of the bypass pipe (9) is connected to the chimney (13).

7. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 2, characterized in that, A primary filter (10.1) is installed in the return air treatment chamber, and a return air inlet is installed on the top surface of the return air treatment chamber. A primary filter (10.1) is installed in the fresh air treatment chamber, and a fresh air inlet is installed on the side wall of the fresh air treatment chamber. The fresh air inlet is connected to the fresh air inlet pipeline. A plate heat exchanger is installed in the plate heat recovery chamber (10.2).

8. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 2, characterized in that, An exhaust fan (10.8) is installed inside the exhaust chamber, and an exhaust outlet is provided on the inner side wall of the exhaust chamber. The exhaust outlet is connected to the chimney (13) through an exhaust pipe, and an electric air valve B (11) is installed on the exhaust pipe.

9. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 2, characterized in that, The fresh air exhaust chamber is sequentially equipped with a fresh air fan (10.3), a humidification section (10.4), an electric heating section (10.5), and a surface cooling section (10.6); the surface cooling section (10.6) is located on the side adjacent to the plate heat recovery chamber (10.2); the fresh air fan (10.3) is located on the side adjacent to the fresh air outlet, and the fresh air outlet is located on the side wall of the fresh air exhaust chamber.

10. The constant temperature and humidity machining workshop oil mist control air temperature and humidity control system as described in claim 2, characterized in that, The surface cooling section (10.6) includes the chilled water coil, which is connected to the chilled water source through the chilled water inlet pipe. The other end of the chilled water coil is connected to the chilled water outlet pipe, and an electric two-way regulating valve (10.7) is installed on the chilled water outlet pipe.

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