Multifunctional dehumidification dryer and drying chamber

Abstract

The utility model discloses a multifunctional dehumidification dryer and a drying chamber. The multifunctional dehumidification dryer comprises an inner condenser, a liquid storage tank, an expansion valve, an inner evaporator, an outer evaporator, a vapor-liquid separator, a compressor and a four-way valve, and the four-way valve is connected with the compressor, the vapor-liquid separator, the inner condenser, the inner evaporator and the outer evaporator to form a closed-loop pipeline; the inner condenser is provided with a first condensation connector connected with the liquid storage tank and a second condensation connector connected with the four-way valve. And one end of the outer condenser is connected with the second condensation connector through a first pipeline, and the other end of the outer condenser is connected with a pipeline between the liquid storage tank and the expansion valve through a second pipeline. According to the multifunctional dehumidification dryer, the outer condenser is additionally arranged, so that the gas heating temperature can be flexibly adjusted in a constant-temperature mode, and the four-way valve does not need to be frequently switched, and the compressor does not need to be started or stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidifying dryers, and particularly relates to a multifunctional dehumidifying dryer and a drying chamber. Background Art

[0002] Drying chambers are widely used in industry, mainly for drying moisture in large electrical appliances, motors, coatings, chemical products, as well as food and various products. Dryers are the key equipment for drying chambers to function. In existing products, when the drying chamber enters the constant temperature mode, time control is used to maintain the temperature of the drying chamber relatively stable. When the temperature of the drying chamber reaches the set temperature, the control system starts timing. After the timing ends, when the temperature of the drying chamber is lower than the set temperature, the dryer switches to the open-loop heating mode; when the temperature of the drying chamber is higher than the set temperature, the dryer switches to the open-loop cooling mode. During this conversion process, the compressor must be stopped first, and then the connection of the four-way valve is switched to complete the mode switch. The start and stop of the compressor must be restricted by the minimum shutdown time of the compressor. When the compressor stops, the temperature of the drying chamber drops immediately, and when the compressor restarts, it takes some time to run stably. This will cause the temperature of the drying chamber to fluctuate greatly.

[0003] Obviously, the existing technology still needs to be improved. Summary of the Utility Model

[0004] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present utility model is to provide a multifunctional dehumidifying dryer and a drying chamber, aiming to solve the technical problem that in the constant temperature mode of the existing dryer, the compressor needs to be repeatedly started to switch the connection of the four-way valve, resulting in large fluctuations in the temperature of the drying chamber.

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

[0006] The first aspect of the present utility model provides a multifunctional dehumidifying dryer, including: an internal condenser, a liquid storage tank, an expansion valve connected in sequence, and an internal evaporator and an external evaporator arranged in parallel; a gas-liquid separator and a compressor connected in sequence; a four-way valve, which is respectively connected to the compressor, the gas-liquid separator, the internal condenser, and the internal evaporator and the external evaporator to form a closed-loop pipeline; the internal condenser is provided with a first condensation interface connected to the liquid storage tank and a second condensation interface connected to the four-way valve; wherein, an external condenser is further included, one end of the external condenser is connected to the second condensation interface through a first pipeline, and the other end is connected to the pipeline between the liquid storage tank and the expansion valve through a second pipeline.

[0007] For the above-mentioned multifunctional dehumidifying dryer, a waste heat solenoid valve is arranged on the first pipeline; a first check valve is arranged on the second pipeline, and the first check valve is used to prevent the refrigerant from reversely entering the external condenser through the second pipeline.

[0008] For the multifunctional dehumidifying and drying machine described above, a dehumidifying solenoid valve is provided on the connecting pipe between the expansion valve and the inner evaporator; a drying solenoid valve is provided on the connecting pipe between the expansion valve and the outer evaporator.

[0009] For the multifunctional dehumidifying and drying machine described above, the four-way valve includes a first interface, a second interface, a third interface, and a fourth interface; the first interface is connected to the outlet end of the compressor; the second interface is connected to the inlet end of the gas-liquid separator; the third interface is connected to the second condensation interface; the fourth interface is connected to the inner evaporator and the outer evaporator through a multi-pass pipe.

[0010] For the multifunctional dehumidifying and drying machine described above, the multi-pass pipe includes a first pipe section, a second pipe section, and a third pipe section; the first pipe section is connected to the fourth interface; the second pipe section is connected to the inner evaporator; the third pipe section is connected to the outer evaporator; a second one-way valve is provided on the second pipe section, and the second one-way valve is used to prevent the refrigerant from flowing reversely into the inner evaporator through the second pipe section.

[0011] For the multifunctional dehumidifying and drying machine described above, it further includes a housing, and an air return channel is provided inside the housing; an inner air supply fan is provided in the air return channel, and the inner evaporator and the inner condenser are sequentially arranged in the air return channel.

[0012] For the multifunctional dehumidifying and drying machine described above, a first outer air channel and a second outer air channel are further provided inside the housing; a first outer air supply fan is provided on the first outer air channel, and the outer evaporator is arranged in the first outer air channel; a second outer air supply fan is provided on the second outer air channel, and the outer condenser is arranged in the second outer air channel.

[0013] In a second aspect of the present invention, a drying chamber is provided, and the drying chamber includes a circulation fan, an air return layer, an air inlet layer, and the multifunctional dehumidifying and drying machine described above arranged in the drying chamber; the air return layer is arranged above the air inlet layer, and the air return layer and the air inlet layer are in circular communication.

[0014] For the drying chamber described above, the circulation fan is arranged at the air inlet end of the air inlet layer; the air return channel of the multifunctional dehumidifying and drying machine is arranged in the drying chamber and is located upstream of the circulation fan.

[0015] For the drying chamber described above, a moisture discharge air valve is provided at the air outlet end of the air inlet layer, and the moisture discharge air valve is used to discharge part of the moisture from the drying chamber.

[0016] Beneficial effects: In the first aspect of the present utility model, a multifunctional dehumidifying and drying machine is provided. By setting an external condenser, the multifunctional dehumidifying and drying machine can flexibly release excess heat outdoors as needed, so that the heating temperature of the indoor air can be flexibly adjusted in the constant temperature mode. When the temperature is too high, more waste heat is released to reduce the heating temperature of the indoor gas; when the temperature is too low, less waste heat is released to increase the heating temperature of the indoor gas. Thus, there is no need to switch the four-way valve, avoiding the problem of large fluctuations in indoor temperature caused by repeated start and stop of the compressor.

[0017] In the second aspect of the present embodiment, a drying chamber is provided. The drying chamber is provided with the above-mentioned multifunctional dehumidifying and drying machine, which can realize temperature increase dehumidification, temperature decrease dehumidification and constant temperature dehumidification, and the indoor temperature range fluctuates little during constant temperature dehumidification. Description of the drawings

[0018] Figure 1 Schematic diagram of the pipeline connection of the multifunctional dehumidifying and drying machine Figure 1 。

[0019] Figure 2 Schematic diagram of the pipeline connection of the multifunctional dehumidifying and drying machine Figure 2 。

[0020] Figure 3 Schematic diagram of the structure of the multifunctional dehumidifying and drying machine Figure 1 。

[0021] Figure 4 Schematic diagram of the structure of the multifunctional dehumidifying and drying machine Figure 2 。

[0022] Figure 5 Schematic diagram of the structure of the drying chamber.

[0023] Description of the main component symbols: 1 - multifunctional dehumidifying and drying machine, 11 - internal condenser, 12 - liquid storage tank, 13 - expansion valve, 14 - internal evaporator, 15 - external evaporator, 16 - gas-liquid separator, 17 - compressor, 18 - four-way valve, 19 - external condenser, 20 - first pipeline, 21 - second pipeline, 22 - waste heat solenoid valve, 23 - first check valve, 24 - dehumidification solenoid valve, 25 - drying solenoid valve, 26 - second check valve, 27 - internal air blower, 28 - first external air blower, 29 - second external air blower, 30 - return air duct, 31 - control device, 32 - housing, 33 - multi-pass pipeline, 181 - first interface, 182 - second interface, 183 - third interface, 184 - fourth interface, 2 - circulation fan, 3 - air inlet layer, 4 - return air layer, 5 - moisture exhaust air valve. Detailed implementation manners

[0024] The present utility model provides a multi-functional dehumidifying dryer and a drying chamber. To make the objectives, technical solutions and effects of the present utility model clearer and more definite, the following further describes the present utility model in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is more than two.

[0026] Please refer to Figure 1 , the present utility model provides a multi-functional dehumidifying dryer 1, including:

[0027] An inner condenser 11, a liquid storage tank 12, an expansion valve 13, and an inner evaporator 14 and an outer evaporator 15 connected in sequence and arranged in parallel;

[0028] A gas-liquid separator 16 and a compressor 17 connected in sequence;

[0029] A four-way valve 18, which is respectively connected to the compressor 17, the gas-liquid separator 16, the inner condenser 11, and the inner evaporator 14 and the outer evaporator 15 to form a closed-loop pipeline;

[0030] The inner condenser 11 is provided with a first condensation interface connected to the liquid storage tank 12 and a second condensation interface connected to the four-way valve 18;

[0031] Among them, an outer condenser 19 is further included. One end of the outer condenser 19 is connected to the second condensation interface through a first pipeline 20, and the other end is connected to the pipeline between the liquid storage tank 12 and the expansion valve 13 through a second pipeline 21.

[0032] The four-way valve 18 is used to switch the connection of the pipeline to change the flow path of the refrigerant. The inner evaporator 14 is used in the heating mode and the constant temperature mode; the outer evaporator 15 is used in the cooling mode. The inner evaporator 14 is used to reduce the temperature of the indoor air, liquefy the water vapor, and achieve the dehumidification effect.

[0033] When entering the constant temperature mode, the external evaporator 15 is deactivated, and the external condenser 19, the internal evaporator 14, and the internal condenser 11 operate. The indoor circulating air first passes through the internal evaporator 14 to cool down and liquefy the water vapor, and then passes through the internal condenser 11 for heating to form high-temperature dry gas. When the temperature of the indoor circulating air is too high, the external condenser 19 increases the release of waste heat to the outside to reduce the heating temperature of the internal condenser 11. When the temperature of the indoor circulating air is too low, the external condenser 19 reduces the release of waste heat to the outside to increase the heating temperature of the internal condenser 11. Thus, in the constant temperature mode, there is no need to repeatedly switch the four-way valve 18 and start and stop the compressor 17 to increase or decrease the temperature of the indoor circulating air.

[0034] Please refer to Figure 2 , in one embodiment, a waste heat solenoid valve 22 is provided on the first pipeline 20; a first one-way valve 23 is provided on the second pipeline 21, and the first one-way valve 23 is used to prevent the refrigerant from reversely entering the external condenser 19 through the second pipeline 21. The waste heat solenoid valve 22 is used to control the connection between the external condenser 19 and the four-way valve 18. Please refer to Figure 4 , specifically, a control device 31 is further provided on the multifunctional dehumidifying and drying machine 1, and the control device 31 is used to control the operation of each electrical component. The waste heat solenoid valve 22 can change the passing flow rate under the action of the control device 31, thereby adjusting the heat dissipation amount of the external condenser 19.

[0035] Please refer to Figure 2 , in one embodiment, a dehumidifying solenoid valve 24 is provided on the connecting pipeline between the expansion valve 13 and the internal evaporator 14; a drying solenoid valve 25 is provided on the connecting pipeline between the expansion valve 13 and the external evaporator 15. The dehumidifying solenoid valve 24 is used to control the connection of the internal evaporator 14, and the drying solenoid valve 25 is used to control the connection of the external evaporator 15.

[0036] Please refer to Figure 2 , specifically, the four-way valve 18 includes a first interface 181, a second interface 182, a third interface 183, and a fourth interface 184; the first interface 181 is connected to the outlet end of the compressor 17; the second interface 182 is connected to the inlet end of the gas-liquid separator 16; the third interface 183 is connected to the second condensation interface; the fourth interface 184 is connected to the internal evaporator 14 and the external evaporator 15 through a multi-way pipeline 33. The four-way valve 18 changes the circulating flow direction of the refrigerant when powered on and powered off, and then cooperates with the use of other solenoid valves to form a variety of different connection pipelines, which can form a variety of different flow paths, so that the multifunctional dehumidifying and drying machine 1 enters the heating mode, the cooling mode or the constant temperature mode.

[0037] Please refer to Figure 2, specifically, the multi-way pipe 33 includes a first pipe section, a second pipe section, and a third pipe section; the first pipe section is connected to the fourth interface 184; the second pipe section is connected to the inner evaporator 14; the third pipe section is connected to the outer evaporator 15; a second one-way valve 26 is provided on the second pipe section, and the second one-way valve 26 is used to prevent the refrigerant from reversely entering the inner evaporator 14 through the second pipe section.

[0038] Please refer to Figures 1 - 4 , in one embodiment, the multi-functional dehumidifying dryer 1 further includes a housing 32, and an air return passage 30 is provided inside the housing 32; an inner air supply fan 27 is provided in the air return passage 30, and the inner evaporator 14 and the inner condenser 11 are sequentially arranged in the air return passage 30. The inner air supply fan 27 is used to make the circulating air pass through the inner evaporator 14 and the inner condenser 11 in sequence.

[0039] Please refer to Figure 1 , Figure 3 and Figure 4 , in one embodiment, a first outer air passage and a second outer air passage are further provided inside the housing 32; a first outer air supply fan 28 is provided on the first outer air passage, the outer evaporator 15 is arranged in the first outer air passage, and the first outer air supply fan 28 is used to make the outdoor air pass through the outer evaporator 15; a second outer air supply fan 29 is provided on the second outer air passage, the outer condenser 19 is arranged in the second outer air passage, and the second outer air supply fan 29 is used to make the outdoor air pass through the outer condenser 19.

[0040] In the heating mode, the waste heat solenoid valve 22 is de-energized, the drying solenoid valve 25 is de-energized, the dehumidifying solenoid valve 24 is energized, the four-way valve 18 is de-energized, the inner condenser 11 is enabled, the inner evaporator 14 is enabled, and the inner air supply fan 27 is enabled. The air in the drying chamber first passes through the inner evaporator 14, the temperature of the indoor air decreases, moisture is precipitated, and then passes through the inner condenser 11, and the temperature rises, thereby heating the item to be heated and absorbing the moisture of the item, achieving the purpose of heating and dehumidifying.

[0041] In the cooling mode, the waste heat solenoid valve 22 is de-energized, the drying solenoid valve 25 is energized, the dehumidifying solenoid valve 24 is de-energized, the four-way valve 18 is energized, the inner condenser 11 is enabled, the outer evaporator 15 is enabled, the inner air supply fan 27 is enabled, and the first outer air supply fan 28 is enabled. The outer evaporator 15 releases heat, the outdoor air passes through the outer evaporator 15, the temperature of the air rises, the indoor air passes through the inner condenser 11, the temperature of the air drops, and moisture is precipitated, achieving the purpose of cooling and dehumidifying.

[0042] In the constant temperature mode, the waste heat solenoid valve 22 is energized, the drying solenoid valve 25 is de-energized, the dehumidification solenoid valve 24 is energized, the four-way valve 18 is de-energized, the internal condenser 11 is enabled, the internal evaporator 14 is enabled, the internal air supply fan 27 is enabled, the external condenser 19 is enabled, and the second external air supply fan 29 is enabled. The air in the drying chamber first passes through the internal evaporator 14, the temperature of the indoor air decreases, moisture is precipitated, and then passes through the internal condenser 11, the temperature rises, thereby heating the item to be heated and absorbing the moisture of the item. At the same time, by controlling the flow rate of the waste heat solenoid valve 22, the flow rate of the coolant entering the external condenser 19 can be adjusted, so as to dissipate the excess heat outdoors, complete the adjustment of the heating temperature, and achieve the purpose of constant temperature dehumidification.

[0043] Please refer to Figure 5 , the second aspect of the present utility model provides a drying chamber, including a circulation fan 2, a return air layer 4, an air inlet layer 3 arranged in the drying chamber, and the multifunctional dehumidifying dryer 1 as described above; the return air layer 4 is arranged above the air inlet layer 3, and the return air layer 4 is in circular communication with the air inlet layer 3. The circulation fan 2 is used to make the air in the drying chamber circulate along the air inlet layer 3 and the return air layer 4, and make the fresh air enter the multifunctional dehumidifying dryer 1 after completing the heat and moisture exchange with the item to be dried.

[0044] Preferably, the circulation fan 2 is arranged at the air inlet end of the air inlet layer 3; the return air channel 30 of the multifunctional dehumidifying dryer 1 is arranged in the drying chamber and is located upstream of the circulation fan 2. Specifically, during operation, part of the circulating air enters the return air channel 30 to complete dehumidification and temperature increase or decrease, and the discharged fresh air is discharged by the circulation fan 2 to the air inlet layer 3. The materials located in the air inlet layer 3 complete the heat and moisture exchange, and the circulating air returns to the front through the return air layer 4.

[0045] Please refer to Figure 5 , a moisture exhaust valve 5 is arranged at the air outlet end of the air inlet layer 3, and the moisture exhaust valve 5 is used to discharge part of the moisture from the drying chamber. After the fresh air passes through the air inlet layer 3 and completes the heat and moisture exchange with the wet materials, the formed wet air reaches the rear end of the air inlet layer 3. By the combined use of the moisture exhaust valve 5, part of the moisture is discharged, which can improve the drying efficiency.

[0046] In summary, by adding the external condenser 19 and cooperating with the use of the internal evaporator 14 and the internal condenser 11, the multifunctional dehumidifying dryer 1 of the present utility model can flexibly adjust the gas heating temperature in the constant temperature mode without repeatedly turning off the compressor 17 and switching the four-way valve 18.

[0047] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and the inventive concept of the present utility model, and all such changes or substitutions should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A multifunctional dehumidifying dryer, comprising: An inner condenser, a liquid storage tank, an expansion valve connected in sequence, and an inner evaporator and an outer evaporator arranged in parallel; A vapor-liquid separator and a compressor connected in sequence; A four-way valve, wherein the four-way valve is respectively connected to the compressor, the vapor-liquid separator, the inner condenser, the inner evaporator and the outer evaporator to form a closed-loop pipeline; The inner condenser is provided with a first condensation interface connected to the liquid storage tank and a second condensation interface connected to the four-way valve; It is characterized in that it also includes an external condenser, one end of which is connected to the second condensation interface through a first pipe, and the other end of which is connected to the pipeline between the liquid storage tank and the expansion valve through a second pipe.

2. The multifunctional dehumidifying dryer according to claim 1, characterized in that: The first pipeline is provided with a waste heat solenoid valve; the second pipeline is provided with a first one-way valve, and the first one-way valve is used to prevent the refrigerant from reversely entering the external condenser through the second pipeline.

3. The multifunctional dehumidifying dryer according to claim 2, characterized in that: A dehumidification solenoid valve is arranged on the connecting pipe between the expansion valve and the inner evaporator; and a drying solenoid valve is arranged on the connecting pipe between the expansion valve and the outer evaporator.

4. The multifunctional dehumidifying dryer according to claim 3, characterized in that: The four-way valve includes a first interface, a second interface, a third interface and a fourth interface; the first interface is connected to the outlet end of the compressor; the second interface is connected to the inlet end of the vapor-liquid separator; the third interface is connected to the second condensation interface; the fourth interface is connected to the inner evaporator and the outer evaporator through a multi-way pipeline.

5. The multifunctional dehumidifying dryer according to claim 4, characterized in that: The multi-way pipeline includes a first pipe section, a second pipe section and a third pipe section; the first pipe section is connected to the fourth interface; the second pipe section is connected to the inner evaporator; the third pipe section is connected to the outer evaporator; a second one-way valve is provided on the second pipe section, and the second one-way valve is used to prevent the refrigerant from reversely entering the inner evaporator through the second pipe section.

6. The multifunctional dehumidifying dryer according to any one of claims 1 to 5, characterized in that: It also includes a shell, in which a return air channel is arranged; an internal blower is arranged in the return air channel, and the internal evaporator and the internal condenser are arranged in the return air channel in sequence.

7. The multifunctional dehumidifying dryer according to claim 6, characterized in that: A first external wind channel and a second external wind channel are also provided in the shell; a first external wind channel is provided with a first external blower, and the external evaporator is provided in the first external wind channel; a second external blower is provided in the second external wind channel, and the external condenser is provided in the second external wind channel.

8. A drying room, characterized in that: It includes a circulating fan, a return air layer, an air intake layer, and a multifunctional dehumidification dryer as described in claim 6 or 7, which are arranged in a drying room; the return air layer is arranged above the air intake layer, and the return air layer is cyclically connected with the air intake layer.

9. The drying chamber according to claim 8, characterized in that: The circulating fan is arranged at the air inlet end of the air inlet layer; the return air channel of the multifunctional dehumidifying dryer is arranged in the drying room and is located upstream of the circulating fan.

10. The drying chamber according to claim 9, characterized in that: The air outlet end of the air inlet layer is provided with a dehumidification air valve, and the dehumidification air valve is used to discharge part of the moisture out of the drying chamber.

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