An oven air duct device and a coating production line

Abstract

The utility model discloses a kind of oven air pipe device and coating production line, wherein oven air pipe device includes oven main body, air inlet pipe, return air pipe and heat pump assembly, the heat pump assembly is used to deliver hot air to oven main body, the air inlet pipe is connected the output end of the heat pump assembly With the input end of the oven main body, the return air pipe connects the return air end of the oven main body With the air inlet end of the heat pump assembly, the heat pump assembly is provided with fresh air opening, external fresh air enters the heat pump assembly inside from the fresh air opening. The present application has the advantages of remarkable energy-saving effect and safe operation, stable performance, low cost.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, and in particular to an oven duct device and a coating production line. Background Technology

[0002] In lithium battery production, the heating source for lithium battery ovens is primarily electric heating. Existing electric heating devices mainly include PCT heating and armored heating. PCT heating is an electric heater based on semiconductor materials; armored heating consists of a series of metal tubes locked together, with the space between them used for heating by a heating medium. Due to the complexity of electric heating equipment, it is relatively expensive and has lower safety performance for large-scale lithium battery production or long-term continuous use. Electric heating equipment also generates electromagnetic radiation, which, if the range and intensity cannot be properly controlled, may cause environmental harm.

[0003] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an oven air duct device and a coating production line, which solves the problem of high energy consumption required for heating in existing ovens.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An oven duct system includes an oven body, an air inlet duct, a return air duct, and a heat pump assembly. The heat pump assembly supplies hot air to the oven body. The air inlet duct connects the output end of the heat pump assembly to the input end of the oven body. The return air duct connects the return air end of the oven body to the air inlet end of the heat pump assembly. The heat pump assembly is provided with a fresh air inlet, through which fresh air from outside enters the interior of the heat pump assembly.

[0007] In the above structure, the heat pump assembly includes a cabinet, a condenser, an evaporator, a compressor, and a heat pump electrical box. The condenser, the compressor, and the evaporator are connected in pairs, and an expansion valve is provided between the condenser and the evaporator.

[0008] The compressor compresses the refrigerant and introduces it into the condenser. After heat exchange in the condenser, the refrigerant expands and depressurizes through the expansion valve before being introduced into the evaporator. The refrigerant absorbs heat and evaporates in the evaporator before returning to the compressor. The heat pump electrical box is used to supply power to the heat pump assembly.

[0009] In the above structure, the cabinet has an evaporation chamber and a fresh air heating chamber. The evaporation chamber is located in the upper part of the cabinet, and the fresh air heating chamber is located in the lower part of the cabinet. The condenser is disposed in the fresh air heating chamber, and the evaporator is disposed in the evaporation chamber.

[0010] A circulating fan is installed at the bottom of the fresh air heating chamber, and the circulating fan is connected to the air inlet pipe.

[0011] In the above structure, the heat pump assembly further includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe connects the outlet of the condenser and the inlet of the compressor; the second connecting pipe connects the outlet of the compressor and the inlet of the condenser; the third connecting pipe connects the outlet of the condenser and the inlet of the evaporator; the fourth connecting pipe connects the outlet of the evaporator and the inlet of the condenser. The expansion valve is disposed in the transmission path of the third connecting pipe, and the first connecting pipe and the fourth connecting pipe are connected to each other.

[0012] In the above structure, the diameter of the third connecting pipe between the expansion valve and the condenser is 16mm, and the diameter of the third connecting pipe between the expansion valve and the evaporator is 22mm.

[0013] In the above structure, the diameter of the fourth connecting pipe is 22mm;

[0014] The diameter of the second connecting pipe is 16mm;

[0015] The diameter of the first connecting pipe is 22mm.

[0016] The above structure also includes an exhaust fan and an exhaust duct. The exhaust fan is mounted on the heat pump assembly, and the exhaust duct is connected to the exhaust fan and communicates with the heat pump assembly.

[0017] In the above structure, the exhaust duct is provided with an exhaust branch duct, which is connected to the return air duct and the exhaust duct respectively.

[0018] In the above structure, the fresh air inlet is equipped with a filter for filtering fresh air.

[0019] This utility model also provides:

[0020] A coating production line includes an oven duct assembly with the structure described above.

[0021] The beneficial effects of this utility model are: by applying the heat pump component to the heating source of the oven, the fresh air and return air are heated by the heat pump component and delivered to the oven body to achieve the purpose of providing heat to the oven body, which greatly improves the heating energy efficiency ratio. The heat pump component can generate more than 3kW of heat energy for every 1kW of electrical energy consumed, effectively saving energy consumption. Moreover, the entire device has stable performance, safe operation, low cost and long service life. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a top view of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the present invention;

[0026] Figure 4 This is a schematic diagram of the heat pump component of this utility model.

[0027] Reference numerals: 1. Main body of the oven; 2. Heat pump assembly; 21. Cabinet; 211. Evaporation chamber; 212. Fresh air heating chamber; 213. Circulating fan; 214. Fresh air inlet; 215. Filter; 22. Condenser; 221. First connecting pipe; 222. Second connecting pipe; 223. Third connecting pipe; 224. Fourth connecting pipe; 23. Evaporator; 24. Compressor; 25. Heat pump electrical box; 26. Expansion valve; 3. Air inlet pipe; 4. Air return pipe; 5. Exhaust fan; 51. Exhaust pipe; 52. Exhaust branch pipe. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0029] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0030] Reference Figures 1 to 4 This application discloses an oven duct device, which includes an oven body 1, an air inlet duct 3, a return air duct 4, and a heat pump assembly 2. The heat pump assembly 2 is connected to the oven body 1 and is used to supply heat energy to the oven body 1. Specifically, the air inlet duct 3 connects the output end of the heat pump assembly 2 and the input end of the oven body 1, and the return air duct 4 connects the return air end of the oven body 1 and the air inlet end of the heat pump assembly 2. The heat pump assembly 2 is provided with a fresh air inlet 214. External fresh air enters the interior of the heat pump assembly 2 through the fresh air inlet 214. The fresh air entering the interior of the heat pump assembly 2 and the return air entering the interior of the heat pump assembly 2 through the return air duct 4 are heated by the heat pump assembly 2 and then delivered to the interior of the oven body 1.

[0031] Reference Figure 3 and Figure 4 The further heat pump assembly 2 includes a cabinet 21, a condenser 22, an evaporator 23, a compressor 24, and a heat pump electrical box 25. The condenser 22, the compressor 24, and the evaporator 23 are connected in pairs. An expansion valve 26 is provided between the condenser 22 and the evaporator 23. The compressor 24 compresses the refrigerant and introduces it into the condenser 22. After heat exchange in the condenser 22, the refrigerant is depressurized by the expansion valve 26 and then introduced into the evaporator 23. After absorbing heat and evaporating in the evaporator 23, the refrigerant returns to the compressor 24. The heat pump electrical box 25 is used to supply power to the heat pump assembly 2. The core heating principle of heat pump component 2 is the reverse Carnot cycle principle. Liquid refrigerant flows through evaporator 23, absorbing low-temperature heat from the air. After absorbing heat, the refrigerant evaporates into a low-temperature, low-pressure gas. The gaseous refrigerant enters compressor 24 and is compressed into a high-temperature, high-pressure gas. During this process, electrical energy is consumed to raise the heat energy level to a usable level. The high-temperature gaseous refrigerant enters condenser 22, releasing heat to the air. After cooling, the refrigerant condenses into a high-pressure liquid. The high-pressure liquid refrigerant is throttled by expansion valve 26, instantly reducing its pressure to a low-temperature, low-pressure liquid, which has the ability to absorb heat and evaporate. The low-temperature, low-pressure liquid refrigerant enters evaporator 23, absorbs heat from the air, evaporates itself, and changes from a liquid to a gas. The refrigerant that has absorbed heat becomes a low-temperature, low-pressure gas, which is then drawn into compressor 24 for compression, and so on in a continuous cycle. The low-temperature air entering the heat pump assembly 2 cabinet 21 absorbs the heat released by the high-temperature gaseous refrigerant in the condenser 22, achieving a heat exchange effect and becoming high-temperature air. This high-temperature air is then transported to the oven body 1 through the air inlet duct 3. The return air duct 4 connects the return air end of the oven body 1 and the air inlet end of the heat pump assembly 2. The air entering the heat pump assembly 2 from the return air duct 4 and the fresh air inlet 214 is heated by the heat pump assembly 2 and then enters the oven body 1 through the air inlet duct 3.

[0032] The cabinet 21 is internally divided into multiple chambers, including an evaporator chamber 211 and a fresh air heating chamber 212. The evaporator chamber 211 is located at the top of the cabinet 21, and the fresh air heating chamber 212 is located at the bottom. An air inlet duct (not shown in the figure) connects the evaporator chamber 211 and the fresh air heating chamber 212. The evaporator 23 is installed in the evaporator chamber 211, and the condenser 22 is located in the fresh air heating chamber 212. The compressor 24 can be configured according to existing technology and will not be described in detail here. Airflow entering the evaporator chamber 211 through the fresh air inlet 214 and the return air duct 4 enters the fresh air heating chamber 212 through the air inlet duct, where it exchanges heat with the condenser 22 to heat the air.

[0033] Specifically, the evaporation chamber 211 has a return air inlet (i.e., the air inlet of the heat pump assembly 2) on its side wall, and the oven body 1 has a return air outlet (i.e., the return air end of the oven body 1). The return air duct 4 connects the return air outlet and the return air inlet. The fresh air inlet 214 is located at the top of the evaporation chamber 211, and external fresh air can enter the evaporation chamber 211 through the fresh air inlet 214.

[0034] The side wall of the fresh air heating chamber 212 has a hot air outlet (i.e., the output end of the heat pump component 2). One end of the air inlet pipe 3 is connected to the hot air outlet, and the main body of the oven 1 has a hot air inlet (i.e., the input end of the main body of the oven 1). The other end of the air inlet pipe 3 is connected to the hot air inlet of the main body of the oven 1. A circulating fan 213 is installed at the bottom of the fresh air heating chamber 212. The circulating fan 213 is connected to the hot air outlet. The hot air in the fresh air heating chamber 212 is discharged to the air inlet pipe 3 through the circulating fan 213 to provide heat to the main body of the oven 1. This causes the air pressure in the fresh air heating chamber 212 to decrease, and fresh air is drawn in from the fresh air passage between the fresh air heating chamber 212 and the evaporator chamber 211. After the fresh air exchanges heat with the condenser 22, it is transported back to the main body of the oven 1, thus continuously providing heat to the main body of the oven 1.

[0035] Reference Figure 4 The heat pump assembly 2 also includes a first connecting pipe 221, a second connecting pipe 222, a third connecting pipe 223, and a fourth connecting pipe 224. The first connecting pipe 221 connects the outlet of the condenser 22 and the inlet of the compressor 24; the second connecting pipe 222 connects the outlet of the compressor 24 and the inlet of the condenser 22; the third connecting pipe 223 connects the outlet of the condenser 22 and the inlet of the evaporator 23; and the fourth connecting pipe 224 connects the outlet of the evaporator 23 and the inlet of the condenser 22. An expansion valve 26 is disposed in the transmission path of the third connecting pipe 223, and the first connecting pipe 221 and the fourth connecting pipe 224 are connected. After exchanging heat with the condenser, the refrigerant expands and depressurizes through the expansion valve 26 and enters the evaporator 23.

[0036] Furthermore, the expansion valve 26 can be located at any position in the transmission path of the third connecting pipe 223, and the diameter of the portion of the third connecting pipe 223 between the expansion valve 26 and the condenser 22 is set to 16 mm, while the diameter of the portion of the third connecting pipe 223 between the expansion valve 26 and the evaporator 23 is set to 22 mm.

[0037] Furthermore, the diameter of the first connecting pipe 221 is set to 22mm; the diameter of the second connecting pipe 222 is set to 16mm; and the diameter of the fourth connecting pipe 224 is 22mm. In this embodiment, each connecting pipe is made of copper, and the outside of the connecting pipe is wrapped with a high-temperature resistant sponge (not shown in the figure) as an insulation layer, and the interface of the high-temperature resistant sponge is connected and fixed with high-temperature resistant glass glue.

[0038] Reference Figure 1 and Figure 2 Furthermore, the fresh air inlet 214 is equipped with a filter 215, which is used to filter fresh air. In this embodiment, the filter 215 is a primary G2 grade filter 215.

[0039] Furthermore, the oven duct system also includes an exhaust fan 5 and an exhaust duct 51. The exhaust fan 5 is mounted on the heat pump assembly 2, and the exhaust duct 51 is connected to the exhaust fan 5 and connects to the return air duct 4 and the heat pump assembly 2. Specifically, the exhaust fan 5 is fixedly mounted on the top of the cabinet 21, and the top of the cabinet 21 has an exhaust port that is connected to the evaporation chamber 211. The exhaust fan 5 is located at one end of the exhaust duct 51, and one end of the exhaust duct 51 is connected to the air inlet. The exhaust fan 5 is used to exhaust some of the air in the heat pump assembly 2 outside the cabinet 21 to balance the air pressure inside the cabinet 21.

[0040] Furthermore, an exhaust branch pipe 52 is provided between the exhaust duct 51 and the return air duct 4, and the exhaust duct 51 and the return air duct 4 are connected through the exhaust branch pipe 52. The return air duct 4 is connected to the exhaust fan 5 through the exhaust duct 51 and the exhaust branch pipe 52. Part of the return air in the return air duct 4 can be discharged directly from the exhaust fan 5 without passing through the heat pump assembly 2, which is beneficial for further balancing the air pressure.

[0041] Through the configuration of each pipeline, the heat pump assembly 2 can adapt to normal operation. That is, the heat pump assembly 2 automatically matches the air volume. When the air volume changes, the heat pump assembly 2 adaptively adjusts the frequency of the compressor 24 to control the evaporation temperature and condensation temperature of the refrigerant. Combined with the opening degree of the thermal expansion valve 26, the heat pump assembly 2 can achieve stable operation, so as to achieve the purpose of stably providing heat to the oven body 1.

[0042] Based on the above structure, this utility model also provides:

[0043] A coating production line includes an oven duct assembly with the structure described above.

[0044] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A drying oven duct device, characterized in that: The oven includes a main body, an air inlet duct, a return air duct, and a heat pump assembly. The heat pump assembly is used to supply hot air to the main body of the oven. The air inlet duct connects the output end of the heat pump assembly with the input end of the main body of the oven. The return air duct connects the return air end of the main body of the oven with the air inlet end of the heat pump assembly. The heat pump assembly is provided with a fresh air inlet, through which fresh air from outside enters the interior of the heat pump assembly.

2. The oven duct device according to claim 1, characterized in that: The heat pump assembly includes a cabinet, a condenser, an evaporator, a compressor, and a heat pump electrical box. The condenser, the compressor, and the evaporator are connected in pairs, and an expansion valve is provided between the condenser and the evaporator. The compressor compresses the refrigerant and introduces it into the condenser. After heat exchange in the condenser, the refrigerant expands and depressurizes through the expansion valve before being introduced into the evaporator. The refrigerant absorbs heat and evaporates in the evaporator before returning to the compressor. The heat pump electrical box is used to supply power to the heat pump assembly.

3. The oven duct device according to claim 2, characterized in that: The cabinet has an evaporation chamber and a fresh air heating chamber. The evaporation chamber is located in the upper part of the cabinet, and the fresh air heating chamber is located in the lower part of the cabinet. The condenser is installed in the fresh air heating chamber, and the evaporator is installed in the evaporation chamber. A circulating fan is installed at the bottom of the fresh air heating chamber, and the circulating fan is connected to the air inlet pipe.

4. The oven duct device according to claim 2, characterized in that: The heat pump assembly further includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe connects the outlet of the condenser and the inlet of the compressor; the second connecting pipe connects the outlet of the compressor and the inlet of the condenser; the third connecting pipe connects the outlet of the condenser and the inlet of the evaporator; the fourth connecting pipe connects the outlet of the evaporator and the inlet of the condenser. The expansion valve is disposed in the transmission path of the third connecting pipe, and the first connecting pipe and the fourth connecting pipe are connected to each other.

5. The oven duct device according to claim 4, characterized in that: The diameter of the third connecting pipe between the expansion valve and the condenser is 16 mm, and the diameter of the third connecting pipe between the expansion valve and the evaporator is 22 mm.

6. The oven duct device according to claim 4, characterized in that: The diameter of the fourth connecting pipe is 22mm; The diameter of the second connecting pipe is 16mm; The diameter of the first connecting pipe is 22mm.

7. The oven duct device according to claim 1, characterized in that: It also includes an exhaust fan and an exhaust duct, wherein the exhaust fan is mounted on the heat pump assembly, and the exhaust duct is connected to the exhaust fan and communicates with the heat pump assembly.

8. The oven duct device according to claim 7, characterized in that: The exhaust duct is equipped with exhaust branch pipes, which are connected to the return air duct and the exhaust duct respectively.

9. The oven duct device according to claim 1, characterized in that: The fresh air inlet is equipped with a filter for filtering fresh air.

10. A coating production line, characterized in that: Includes the oven duct device as described in any one of claims 1-9.

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