Air conditioning unit

Abstract

The utility model discloses an air conditioning unit which comprises an air supply channel, a heat dissipation channel provided with a heating component, a heat dissipation fan driving outdoor fresh air to penetrate through the heating component, and a regeneration channel provided with a regeneration area of a rotary dehumidifier. A rotary dehumidifier adsorption area, an evaporator and a reheating assembly which are sequentially distributed in the air supply direction are installed in the air supply channel, the air supply channel is further provided with a first bypass ventilation opening communicating with the heat dissipation channel, and the first bypass ventilation opening is located between the air outlet side of the evaporator and the air inlet side of the reheating assembly. The regeneration channel is provided with a second bypass ventilation opening communicated with the heat dissipation channel, and the second bypass ventilation opening is located on the air inlet side of the regeneration area of the rotary dehumidifier. Outdoor fresh air is used for dissipating heat of a heating part, part of high-temperature airflow after heat dissipation is led into the air inlet side of the reheating assembly, the rest high-temperature airflow is led into the air inlet side of a regeneration area of the rotary dehumidifier, the temperature and humidity of supplied air are adjusted, regeneration heating power consumption is reduced, and waste heat utilization is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning unit technical field especially is related to air conditioning unit of realizing waste heat utilization. BACKGROUND

[0002] Air conditioning unit is a kind of air handling equipment with multiple functions, responsible for adjusting indoor temperature, humidity, air cleanliness and air flow speed etc. parameter, to meet the demand of people to comfortable indoor environment. With the progress of science and technology and the improvement of people's living standards, air conditioning unit gradually becomes one of indispensable equipment in modern building, and its operation efficiency and energy utilization situation directly affect the overall energy consumption and environmental protection level of building.

[0003] Air conditioning unit has motor and other heating components, and a large amount of heat will be generated in the operation process, which is usually derived from the resistance loss, mechanical loss and friction loss etc. inside the motor, if it cannot be promptly dissipated, it will cause the temperature of motor to rise, and then affect the operation efficiency and life of motor. The traditional air conditioning unit usually configures fan and other heat dissipation equipment for motor, and directly discharges heat to outdoor environment, which not only wastes a lot of energy, but also may cause heat pollution to the surrounding environment.

[0004] Therefore, how to design air conditioning unit capable of effectively utilizing waste heat is a technical problem to be solved in the industry. INVENTION CONTENTS

[0005] In order to optimize the serious energy waste phenomenon existing in the prior art air conditioning unit, the utility model provides air conditioning unit, the air conditioning unit designs and communicates with the heat dissipation passage of air supply passage, utilizes outdoor fresh air to dissipate heat for heating component, and then introduces a part of high-temperature airflow after heat dissipation into the air inlet side of reheating assembly to adjust the temperature and humidity of air supply, and realizes waste heat utilization.

[0006] The technical scheme adopted by the utility model is that air conditioning unit is designed, comprising: air supply passage, heat dissipation passage installed with heating component, and heat dissipation fan driving outdoor fresh air to pass through heating component, air supply passage is installed with rotary dehumidifier adsorption area, evaporator and reheating assembly distributed in turn along the air supply direction, air supply passage is further provided with first bypass air port communicated with heat dissipation passage, and first bypass air port is located between the air outlet side of evaporator and the air inlet side of reheating assembly.

[0007] Further, the air conditioning unit further comprises: regeneration passage installed with rotary dehumidifier regeneration area, and the regeneration passage is provided with second bypass air port communicated with heat dissipation passage, and the second bypass air port is located at the air inlet side of rotary dehumidifier regeneration area.

[0008] Further, the first bypass air port and the second bypass air port are both installed with air valve.

[0009] Further, the air conditioning unit further comprises a humidity sensor configured to detect the humidity of the air supply channel, and the humidity sensor and the air valve are in communication connection with a controller of the air conditioning unit, and the controller controls the opening degree of the air valve according to the detection data of the humidity sensor.

[0010] Further, the heat dissipation fan can be switched to forward rotation or reverse rotation, so that the airflow directions in the air dissipation channel are opposite.

[0011] Further, the air conditioning unit further comprises a temperature sensor configured to detect the temperature value of the heat generating component, and the temperature sensor and the heat dissipation fan are in communication connection with the controller of the air conditioning unit, and the controller controls the rotation direction of the heat dissipation fan according to the detection data of the temperature sensor.

[0012] In some embodiments, the air valve of the first bypass air port is a proportional valve, and the air valve of the second bypass air port is an on-off valve.

[0013] Further, the air in the air supply channel is driven to flow by the air supply fan, and the heat generating component is the motor of the air supply fan.

[0014] In some embodiments, the reheating assembly comprises a condenser and an electric heating device located at the air outlet side of the condenser.

[0015] Compared with the prior art, the air conditioning unit has at least one of the following beneficial effects:

[0016] 1. The heat dissipation channel and the first bypass air port are designed, the high-temperature fresh air after heat dissipation of the heat generating component is introduced into the air inlet side of the reheating assembly through the first bypass air port, the dry cold airflow after dehumidification and cooling is heated and humidified by the high-temperature fresh air, the heating power consumption of the reheating assembly is reduced, and the air supply temperature and humidity are adjusted.

[0017] 2. The second bypass air port is designed, the high-temperature fresh air after heat dissipation of the heat generating component is introduced into the regeneration channel through the second bypass air port, the airflow at the air inlet side of the regeneration area of the rotary dehumidifier is heated by the high-temperature fresh air, the regeneration heating power consumption is reduced, and the heat generated by the heat generating component can be effectively discharged.

[0018] 3. The heat dissipation fan capable of being switched to forward rotation or reverse rotation is designed, when the heat generating component is overheated, the heat dissipation fan is switched to the reverse state, the low-temperature airflow in the air supply channel is introduced into the heat dissipation channel, the heat generating component is cooled by the low-temperature airflow, the heat dissipation requirement of the heat generating component is met, and the normal and safe operation of the unit is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The air conditioning unit will be described in detail below in combination with embodiments and drawings, wherein:

[0020] Figure 1 is a side view of the air conditioning unit;

[0021] Figure 2 is a schematic view of the air conditioner unit from above;

[0022] Figure 3 is a schematic view of the air flow when the heat dissipation fan is rotating forward;

[0023] Figure 4 is a schematic view of the air flow when the heat dissipation fan is rotating backward;

[0024] BRIEF DESCRIPTION OF DRAWINGS: 100, air conditioner unit; 1, compressor; 2, rotary dehumidifier; 3, evaporator; 4, condenser; 5, electric heating device; 6, condensing fan; 7, air supply fan; 71, motor; 8, heat dissipation channel; 81, first bypass air port; 82, second bypass air port; 9, heat dissipation fan; 10, proportional valve; 11, on-off valve; 12, control air valve. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present application and not to limit the present application.

[0026] As shown in Figure 1 , 2 , the present application provides an air conditioner unit 100, comprising: an air supply channel and a heat dissipation channel, the air supply channel and the heat dissipation channel are arranged separately.

[0027] The air supply channel is provided with an air supply fan 7, the air supply fan 7 drives the air flow in the air supply channel to flow from the air inlet to the air outlet, the air inlet of the air supply channel is connected to the outdoor, the air outlet of the air supply channel is connected to the indoor, and the rotary dehumidifier 2 adsorption zone, the evaporator 3 and the reheating assembly are installed in the air supply channel in sequence along the air supply direction. When the air conditioner unit 100 works, the air supply fan 7 is opened, the fresh air enters the air supply channel, the air flow is dehumidified by the adsorption zone of the rotary dehumidifier 2, then cooled and cooled by the evaporator 3, and then passes through the reheating assembly. The air supply air flow after multiple treatments enters the indoor from the air outlet, so that the indoor environment meets the use requirements.

[0028] The heat dissipation channel is provided with a heat dissipation fan 9, and the heat generating components of the air conditioner unit 100 are installed in the heat dissipation channel 8, including but not limited to the motor 71 of the air supply fan 7, the heat dissipation channel 8 is connected to the outdoor, and the heat dissipation fan 9 drives the outdoor fresh air to pass through the heat generating components to dissipate heat for the heat generating components.

[0029] The air supply channel is further provided with a first bypass air port 81 in communication with the heat dissipation channel 8, the first bypass air port 81 is located between the air outlet side of the evaporator 3 and the air inlet side of the reheating assembly, the high-temperature fresh air after heat dissipation of the heat-generating component is introduced into the air outlet side of the evaporator 3 through the first bypass air port 81, the dry cold airflow after dehumidification and cooling is heated and humidified by using the high-temperature fresh air, the heating power consumption of the reheating assembly is reduced, and the air supply temperature and humidity are adjusted.

[0030] The principle of this design is that the air flowing out of the evaporator 3 has been dehumidified and cooled, and the temperature and humidity of the dry cold airflow may be lower than the target air supply temperature and humidity set by the user, and usually the airflow on the air outlet side of the evaporator needs to be reheated and humidified, and the heat dissipation fresh air flowing out of the heat-generating component has higher temperature and greater humidity compared with the dry cold airflow on the air outlet side of the evaporator, so a part of the heat dissipation fresh air is introduced into the air outlet side of the evaporator 3 and the air inlet side of the reheating assembly, which is beneficial to the air conditioning unit 100 to adjust the temperature and humidity control of the air supply airflow and realize energy-saving operation of the air conditioning unit 100.

[0031] It should be pointed out that the reheating assembly mentioned above is used for reheating the dry cold airflow on the air outlet side of the evaporator, and the combination of the condenser 4 and the electric heating device 5 can be adopted, the condenser 4 is located on the air outlet side of the evaporator 3, and the electric heating device 5 is located on the air outlet side of the condenser 4, and other forms can also be adopted in actual application, and the utility model does not specially limit this.

[0032] In some embodiments of the utility model, the air conditioning unit 100 further includes a regeneration channel, the regeneration area of the rotary dehumidifier 2 is installed in the regeneration channel, the regeneration channel is provided with a second bypass air port 82 in communication with the heat dissipation channel 8, the second bypass air port 82 is located on the air inlet side of the regeneration area of the rotary dehumidifier 2, the high-temperature fresh air after heat dissipation of the heat-generating component is introduced into the regeneration channel through the second bypass air port 82, the airflow on the air inlet side of the regeneration area of the rotary dehumidifier 2 is heated by using the high-temperature fresh air, the regeneration heating power consumption is reduced, and the heat generated by the heat-generating component can be effectively discharged.

[0033] The principle of this design is that the solid diluent of the adsorption area of the rotary dehumidifier 2 adsorbs water vapor in humid air, so that the air becomes dry, when the rotary wheel absorbing water moves to the regeneration area, water needs to be desorbed from the rotary wheel so that the rotary wheel can continue to absorb new water. The function of hot air in the regeneration area is to provide enough heat to evaporate and discharge the water in the rotary wheel to the outdoor, so as to realize desorption and restore the moisture absorption capacity of the rotary wheel. Therefore, the rotary dehumidifier 2 needs to continuously supply hot air to the regeneration area during operation, and the heat dissipation fresh air flowing out of the heat-generating component has high temperature, so the heat dissipation fresh air is introduced into the regeneration channel to heat the regeneration fresh air, the waste heat of the heat dissipation fresh air is fully utilized, and the operation energy consumption of the air conditioning unit 100 is greatly reduced.

[0034] On the basis of the above-mentioned embodiments, preferably, the first bypass air port 81 and the second bypass air port 82 are both provided with air valves, and the air volume of the first bypass air port 81 and the second bypass air port 82 is adjusted through the air valves to realize precise control of the air supply temperature and humidity.

[0035] Since the air volume of the first bypass air port 81 directly affects the air supply temperature and humidity, in actual application, the air valve of the first bypass air port 81 is designed as a proportional valve 10, and the air valve of the second bypass air port 82 is designed as an on-off valve 11, and the heat dissipation fresh air introduced into the air supply channel is increased or reduced by adjusting the opening degree of the proportional valve 10, and the remaining most heat dissipation fresh air is discharged to the outside from the regeneration channel. Of course, in order to guarantee the reliability of air flow transportation, a control air valve 12 can also be installed at the heat dissipation channel, and the heat dissipation channel 8 is connected or closed by switching the on-off of the control air valve 12.

[0036] In order to realize precise control of the air supply, the air conditioning unit 100 further comprises a humidity sensor, the humidity sensor is located at the air outlet of the air supply channel, the humidity sensor is used for detecting the air supply humidity of the air supply channel, and the humidity sensor and the air valve are both in communication connection with the controller of the air conditioning unit 100, and the controller controls the opening degree of the air valve according to the detection data of the humidity sensor.

[0037] Specifically, the control logic of the controller is described by taking the application example of the utility model as an example, when the air conditioning unit 100 is in the dehumidification mode, the air supply humidity value S of the air supply channel is detected, the air supply humidity value S is compared with the target humidity value, if the air supply humidity value S is higher than the target humidity value, the air volume of the first bypass air port 81 is reduced, and the heat dissipation fresh air introduced into the air supply channel is reduced, if the air supply humidity value S is not lower than the target humidity value, the air volume of the first bypass air port 81 is maintained.

[0038] As shown in Figure 3 , 4 , based on the design of the air conditioning unit with a heat dissipation channel, in the preferred embodiment of the utility model, the heat dissipation channel 8 is provided with a heat dissipation fan 9 capable of switching forward rotation or reverse rotation, when the heat dissipation fan 9 rotates forward, the air flow in the heat dissipation channel 8 flows from the outdoor to the air supply channel and / or the regeneration channel, when the heat dissipation fan 9 reverses, the air flow in the heat dissipation channel 8 flows from the air supply channel to the outdoor, and the air flow direction in the heat dissipation channel 8 is opposite by switching the forward rotation or reverse rotation of the heat dissipation fan 9.

[0039] The function of this design is to switch the heat dissipation fan 9 to the reverse state when the heating component overheats, introduce the low-temperature air flow in the air supply channel into the heat dissipation channel 8, and use the low-temperature air flow to cool the heating component to meet the heat dissipation demand of the heating component and guarantee the normal and safe operation of the unit.

[0040] To guarantee the heat dissipation requirement of the heat generating component, the air conditioning unit 100 further comprises a temperature sensor for detecting the temperature value of the heat generating component, the temperature sensor and the heat dissipation fan 9 are both in communication connection with the controller of the air conditioning unit 100, and the controller controls the steering of the heat dissipation fan 9 according to the detection data of the temperature sensor.

[0041] Specifically, the control logic of the controller is described by taking the application example of the utility model as an example, when the air conditioning unit 100 is in the dehumidification mode, the temperature value T of the heat generating component is detected, and the temperature value T is compared with the user-set temperature value T0, if the temperature value T is lower than the user-set temperature value T0, the heat dissipation fan 9 is forward rotated, and the heat dissipation fresh air generated in the heat dissipation channel is sent to the air supply channel and / or the regeneration channel, if the temperature value T is not lower than the user-set temperature value T0, the heat dissipation fan 9 is reversed, and the low-temperature and low-humidity airflow in the air supply channel is introduced into the heat dissipation channel 7.

[0042] It should be understood that if the air conditioning unit 100 is not designed with the second bypass air port 82, only the air valve of the first bypass air port 81 is controlled when the motor 71 is forward and reversed, if the air conditioning unit 100 is designed with both the first bypass air port 81 and the second bypass air port 82, the air valve of the second bypass air port 82 is kept closed when the motor 71 is reversed, so as to avoid that the hot air in the regeneration channel mixes into the heat dissipation channel 8 and affects the heat dissipation effect.

[0043] For the convenience of understanding, taking the motor 71 of the air supply fan 7 as an example, the fan section of the air conditioning unit 100 is additionally provided with a volute on the original volute-free centrifugal fan, and the motor is arranged in the heat dissipation channel 8, and the forward and reverse rotation of the motor 71 and the control of the air valve are described in detail below.

[0044] When the air conditioning unit 100 is in the dehumidification mode, the rotary dehumidifier 2 is started to work, the motor 71 of the air supply fan 7 rotates to drive the fresh air to enter the air supply channel, and the air is dehumidified by the adsorption area and the evaporator 3 of the rotary dehumidifier 2.

[0045] During the rotation of the motor 71, a part of electric energy is converted into heat energy due to resistance and electric energy loss, which causes the temperature of the motor to rise, if the motor 71 is not well cooled at this time, overheat protection shutdown will occur, which causes the whole machine to be unable to work normally, the motor 71 generates a lot of heat, and the service life of the motor 71 is also affected, therefore, the surface temperature of the motor 71 is monitored in real time by using the temperature sensor, and the temperature value T detected by the temperature sensor is compared with the user-set temperature value T0.

[0046] For example, Figure 3As shown, if the temperature value T is lower than the user set temperature value T0, it indicates that the motor 71 is normal, the cooling fan 9 is rotating, the proportional valve 10 is opened according to the first set opening degree, the on-off valve 11 is opened, the cooling fresh air is sent to the air supply channel and the regeneration channel, the air supply humidity value S of the air supply channel is detected, the air supply humidity value S is compared with the target humidity value, if the air supply humidity value S is higher than the target humidity value, the opening degree of the proportional valve 10 is reduced, the cooling fresh air introduced into the air supply channel is reduced, if the air supply humidity value S is not lower than the target humidity value, the opening degree of the proportional valve 10 is maintained, and the cooling fresh air introduced into the air supply channel is kept at the current air volume.

[0047] As shown in the above embodiment, if the temperature value T is lower than the user set temperature value T0, it indicates that the motor 71 is normal, the cooling fan 9 is rotating, the proportional valve 10 is opened according to the first set opening degree, the on-off valve 11 is opened, the cooling fresh air is sent to the air supply channel and the regeneration channel, the air supply humidity value S of the air supply channel is detected, the air supply humidity value S is compared with the target humidity value, if the air supply humidity value S is higher than the target humidity value, the opening degree of the proportional valve 10 is reduced, the cooling fresh air introduced into the air supply channel is reduced, if the air supply humidity value S is not lower than the target humidity value, the opening degree of the proportional valve 10 is maintained, and the cooling fresh air introduced into the air supply channel is kept at the current air volume. Figure 4

[0048] In order to improve the control accuracy, after detecting the new temperature value T and the air supply humidity value S each time, the air conditioning unit 100 will re-determine the working state of the proportional valve 10, the on-off valve 11 and the cooling fan 9. The proportional valve 10 in the above embodiment can adjust the opening degree according to a fixed step or a fixed proportion, and the specific adjustment form of the opening degree increase or decrease of the proportional valve 10 is not specially limited in the present application.

[0049] It should be noted that the terms used above are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. When the terms "comprise" and / or "include" are used in the specification, it indicates that the features, steps, operations, devices, components and / or their combinations exist. The order of actions, steps, etc. in the devices and methods shown in the specification can be implemented in any order as long as the output of the previous processing is not used in the subsequent processing, and the order is not specially limited. The similar order terms used for convenience of description do not mean that the implementation must be in such an order.

[0050] ​Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as falling within the scope of the present description. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like-numbers and letters on the figures identify like items, and thus, once an item is defined in one figure, it should not require further discussion in subsequent figures.

[0051] The above merely provides the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Air conditioning unit, including: An air supply channel, wherein the air supply channel is equipped with a rotary dehumidifier adsorption area, an evaporator and a reheat assembly distributed in sequence along the air supply direction, and is characterized in that it also includes: a heat dissipation channel equipped with a heating component, and a heat dissipation fan that drives outdoor fresh air to pass through the heating component, the air supply channel is provided with a first bypass vent connected to the heat dissipation channel, and the first bypass vent is located between the air outlet side of the evaporator and the air inlet side of the reheat assembly.

2. The air conditioning unit according to claim 1, characterized in that: Also includes: A regeneration channel of the regeneration zone of the rotary dehumidifier is installed. The regeneration channel is provided with a second bypass vent communicated with the heat dissipation channel. The second bypass vent is located at the air inlet side of the regeneration zone of the rotary dehumidifier.

3. The air conditioning unit according to claim 2, characterized in that: The first side vent and the second side vent are both equipped with air valves.

4. The air conditioning unit according to claim 3, characterized in that: Also includes: A humidity sensor is used to detect the humidity of the air supply in the air supply channel. The humidity sensor and the air valve are both communicatively connected to the controller of the air conditioning unit. The controller controls the opening of the air valve according to the detection data of the humidity sensor.

5. The air conditioning unit according to any one of claims 1 to 4, characterized in that: The heat dissipation fan can be switched to rotate forward or reverse to reverse the direction of the air flow in the heat dissipation channel.

6. The air conditioning unit according to claim 5, characterized in that: Also includes: A temperature sensor is used to detect the temperature value of the heat-generating component. The temperature sensor and the heat dissipation fan are both communicatively connected to the controller of the air-conditioning unit. The controller controls the direction of the heat dissipation fan according to the detection data of the temperature sensor.

7. The air conditioning unit according to claim 3, characterized in that: The air valve of the first bypass vent is a proportional valve, and the air valve of the second bypass vent is an on-off valve.

8. The air conditioning unit according to claim 1, characterized in that: The air in the air supply channel is driven to flow by a blower, and the heat-generating component is a motor of the blower.

9. The air conditioning unit according to claim 1, characterized in that: The reheat assembly includes a condenser and an electric heating device located on the air outlet side of the condenser.

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