Dehumidifier and air conditioner

Abstract

The utility model discloses a dehumidifier and an air conditioner, the dehumidifier comprises a compressor, and the compressor is provided with an exhaust port; the condenser comprises a main inlet and a main outlet, and the main inlet is connected with the exhaust port; a throttling assembly; the evaporator comprises a first group of heat exchange pipelines, the first group of heat exchange pipelines are located at the bottom of the evaporator, the first group of heat exchange pipelines comprises a first inlet, a first refrigerant flow path and a second refrigerant flow path which are connected in parallel are arranged between the first inlet and the main outlet, and the throttling assembly is located in one of the first refrigerant flow path and the second refrigerant flow path; the first outlet is connected with the first end of the throttling assembly; and the second group of heat exchange pipelines are located above the first group of heat exchange pipelines, the second group of heat exchange pipelines comprises a second inlet, and the second inlet is connected with the second end of the throttling assembly. According to the dehumidifier, the problems that the bottom of the evaporator is frosted under the low-temperature working condition and the compressor is shut down for protection under the high-temperature working condition can be solved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a dehumidifier and an air conditioner. Background Technology

[0002] In existing technologies, when dehumidifiers operate at low temperatures, frost easily forms on the bottom of the evaporator. Under extreme conditions such as high temperature and high humidity, the system load becomes too large, leading to compressor shutdown protection issues.

[0003] For low-temperature operating conditions, existing dehumidifiers improve defrosting efficiency by altering the compressor's running and stopping times in defrosting mode. However, dehumidifiers have standard requirements for defrosting time; that is, after the specified defrosting time, the compressor is forcibly started, which can intensify the frosting on the evaporator. Alternatively, the length of the throttling component or the refrigerant flow rate in the refrigerant path can be changed to improve defrosting efficiency, but this method can affect the overall performance of the dehumidifier under normal operating conditions.

[0004] For high temperature and high humidity conditions, existing dehumidifiers also improve the problem of excessive system load by changing the length of the throttling component or the refrigerant flow in the refrigerant flow path. However, this method will affect the overall performance of the dehumidifier under normal operating conditions. Utility Model Content

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a dehumidifier that, while ensuring the overall performance of the machine under normal operating temperature conditions, avoids the problem of evaporator frost accumulation at low temperatures, which exacerbates the frost buildup at the bottom of the evaporator, and also avoids the problem of compressor shutdown protection due to excessive system load under high-temperature conditions.

[0006] The second objective of this utility model is to provide an air conditioner.

[0007] To address the aforementioned problems, a first aspect of this utility model provides a dehumidifier, comprising: a compressor having an exhaust port; a condenser including a total inlet for refrigerant to flow into the condenser and a total outlet for refrigerant to flow out of the condenser, the total inlet being connected to the exhaust port; a throttling assembly including a first end and a second end; and an evaporator including: a first set of heat exchange pipes located at the bottom of the evaporator, the first set of heat exchange pipes including: a first inlet, the first inlet and the total outlet including a first refrigerant flow path and a second refrigerant flow path connected in parallel, such that the refrigerant flowing out of the total outlet can be selectively diverted from the exhaust port. The first refrigerant flow path or the second refrigerant flow path flows to the first inlet, wherein the throttling component is located in one of the first and second refrigerant flow paths, so that the refrigerant flowing from the total outlet to the first inlet can bypass the throttling component; a first outlet is connected to a first end of the throttling component, so that the refrigerant flowing out of the first outlet flows into the throttling component; a second set of heat exchange pipes is located above the first set of heat exchange pipes, the second set of heat exchange pipes includes: a second inlet is connected to a second end of the throttling component, so that the refrigerant flowing out of the throttling component can flow into the evaporator from the second inlet.

[0008] According to this utility model, the dehumidifier is based on the connection method between the first set of heat exchange pipes and the second set of heat exchange pipes in the evaporator and the throttling component. This allows the refrigerant output from the condenser to selectively enter the first set of heat exchange pipes or the throttling component. Under normal operating conditions, high-temperature refrigerant flows from the throttling component into the complete evaporator pipes, thus ensuring the dehumidification effect of the dehumidifier under normal operating conditions. Under low-temperature or high-temperature and high-humidity conditions, the high-temperature refrigerant flowing out of the condenser's total outlet does not pass through the throttling component to the first inlet, but flows from the first inlet into the first set of heat exchange pipes of the evaporator, and then through the first outlet and the throttling component into the second set of heat exchange pipes of the evaporator. This increases the temperature at the bottom of the evaporator and reduces the temperature of the refrigerant on the condenser side, thereby avoiding the problem of frost and ice buildup at the bottom of the evaporator, which exacerbates the frost problem. It also avoids the problem of the compressor shutting down due to excessive system load under high-temperature conditions.

[0009] In some embodiments, the compressor further has an air inlet, and the second set of heat exchange pipelines further includes a second outlet, which is connected to the air inlet so that refrigerant flowing out from the second outlet enters the compressor from the air inlet.

[0010] The above technical solution has the following advantages or beneficial effects: by connecting the second outlet and the air inlet, the refrigerant after heat exchange can flow back to the compressor.

[0011] In some embodiments, the dehumidifier further includes a control valve assembly disposed in the refrigerant flow path between the evaporator and the throttling assembly and / or the condenser, the control valve assembly being used to change the flow direction of the refrigerant.

[0012] The above technical solution has the following advantages or beneficial effects: by controlling the working state of the control valve group to change the flow direction of the refrigerant, the problem of frost and ice not melting at the bottom of the evaporator is avoided, which aggravates the degree of frost. It can also avoid the problem of compressor shutdown protection due to excessive system load under high temperature conditions.

[0013] In some embodiments, the throttling component is located in the first refrigerant flow path, and the control valve group includes a first state. When the control valve group is in the first state, the refrigerant flowing out of the total outlet enters the compressor sequentially through the second refrigerant flow path, the throttling component, and the second set of heat exchange pipelines.

[0014] The above technical solution has the following advantages or beneficial effects: by controlling the control valve group to be in the first state, the problem of frost and ice not melting at the bottom of the evaporator is avoided, which aggravates the degree of frost. It can also avoid the problem of compressor shutdown protection due to excessive system load under high temperature conditions, and increase the reliability of the system under extreme high temperature conditions.

[0015] In some embodiments, the control valve group includes a second state, in which the refrigerant flowing out of the main outlet enters the compressor sequentially through the throttling assembly and the second set of heat exchange pipelines.

[0016] The above technical solution has the following advantages or beneficial effects: by controlling the control valve group to be in the second state, the dehumidification effect of the dehumidifier under normal temperature conditions is ensured, thereby improving the performance of the dehumidifier.

[0017] In some embodiments, the first outlet is connected to the second inlet so that the refrigerant flowing from the first outlet can selectively flow to the second inlet or the throttling component. The above technical solution has the following advantages or beneficial effects: by connecting the control valve assembly to the first outlet, the refrigerant flows from the first set of heat exchange pipes into the second set of heat exchange pipes under normal temperature operating conditions, greatly improving the heat exchange effect of the evaporator, thereby ensuring the dehumidification effect of the dehumidifier under normal temperature operating conditions and improving the performance of the dehumidifier.

[0018] In some embodiments, the control valve group includes a third state, in which the refrigerant flowing out of the main outlet enters the compressor sequentially through the throttling assembly, the first set of heat exchange pipelines, and the second set of heat exchange pipelines.

[0019] The above technical solution has the following advantages or beneficial effects: when the dehumidifier is operating under normal temperature conditions, the control valve group is controlled to be in the third state, thereby ensuring the dehumidification effect of the dehumidifier under normal temperature conditions and improving the performance of the dehumidifier.

[0020] In some embodiments, the control valve assembly includes: a first control valve, wherein a first port of the first control valve is connected to the total outlet, and a second port of the first control valve is connected to the first inlet; a second control valve, wherein a first port of the second control valve is connected to a third port of the first control valve, and a second port of the second control valve is connected to a first end of the throttling assembly; a third control valve, wherein a first port of the third control valve is connected to a second end of the throttling assembly, a second port of the third control valve is connected to the first inlet, and a third port of the third control valve is connected to the second inlet; and a fourth control valve, wherein a first port of the fourth control valve is connected to the third port of the second control valve, a second port of the fourth control valve is connected to the first outlet, and a third port of the fourth control valve is connected to the second inlet.

[0021] The above technical solution has the following advantages or beneficial effects: the control valve group includes a first control valve, a second control valve, a third control valve and a fourth control valve, so as to selectively introduce refrigerant into the throttling component or the first set of heat exchange pipelines by controlling the working state of the first control valve, the second control valve, the third control valve and the fourth control valve.

[0022] In some embodiments, the number of U-tubes in the first group of heat exchange pipelines is less than the number of U-tubes in the second group of heat exchange pipelines.

[0023] The above technical solution has the following advantages or beneficial effects: the number of U-tubes in the first heat exchange pipeline is less than the number of U-tubes in the second heat exchange pipeline, so as to ensure the heat exchange capacity of the evaporator and improve the dehumidification effect of the dehumidifier.

[0024] A second aspect of this utility model provides an air conditioner, comprising: a dehumidifier as described in the above embodiment; and a controller connected to a control valve group in the dehumidifier, the controller being used to control the on / off state of the control valve group.

[0025] According to the embodiments of the present invention, the air conditioner, through the dehumidifier of the above embodiments, can ensure the overall performance of the unit under normal temperature conditions, while avoiding the problem of increased frost on the evaporator due to frost at the bottom of the evaporator under low temperature conditions, and at the same time, it can also avoid the problem of compressor shutdown protection due to excessive system load under high temperature conditions.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of a dehumidifier according to one embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of an evaporator according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the refrigerant flow direction according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the refrigerant flow direction according to another embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the refrigerant flow direction according to another embodiment of the present invention;

[0033] Figure 6 This is a structural block diagram of an air conditioner according to an embodiment of the present invention.

[0034] Figure label:

[0035] Air conditioner 1000;

[0036] Dehumidifier 100; Controller 200;

[0037] Compressor 1; Condenser 2; Throttling assembly 3; Evaporator 4; First control valve 5; Second control valve 6; Third control valve 7; Fourth control valve 8; Control valve assembly 10; Centrifugal fan 11; First heat exchange pipeline 41; Second heat exchange pipeline 42;

[0038] First import 411; First export 412; Second import 421; Second export 422. Detailed Implementation

[0039] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0040] Most existing dehumidifiers are used in environments with high temperature and high humidity. However, some southern regions may experience high humidity in winter. In southern cities, where there is no central heating, indoor humidity is high in winter. When a dehumidifier is used in such an environment, it will trigger the defrost logic. In defrost mode, the centrifugal fan runs continuously, and the compressor stops running for a period of time at fixed intervals to allow the evaporator to quickly warm up and achieve defrosting. After several defrost cycles, the defrosting effect is achieved. However, when the evaporator condenses the indoor humid air into water, the condensate flows down the surface of the evaporator into the drip tray. The bottom heat exchanger has the largest water accumulation, and the airflow at the bottom is relatively small. This can lead to frost and ice buildup at the bottom of the evaporator, which prevents some condensate from flowing into the drip tray. As a result, the frost spreads from the bottom of the evaporator upwards, further aggravating the frost buildup. Eventually, a large area of ​​frost forms on the evaporator, and the windward side may even be blocked by frost, thus reducing the dehumidification effect of the dehumidifier and reducing the user experience.

[0041] Furthermore, when a dehumidifier operates under high temperature and high humidity conditions, the evaporator side experiences a large heat exchange, while the condenser side experiences less heat dissipation and poor heat exchange due to the high ambient temperature. This imbalance in heat exchange between the evaporator and condenser leads to some heat remaining in the dehumidifier's refrigerant system, increasing system pressure and compressor load. Additionally, since some areas in China do not have a voltage of 220V, dehumidifiers operating under these conditions are prone to overloading the system, causing the compressor to trigger its shutdown protection.

[0042] To address the aforementioned problems, the first aspect of this utility model proposes a dehumidifier that, while ensuring overall performance under normal operating conditions, avoids exacerbating the frost buildup on the evaporator bottom under low-temperature conditions, and also avoids compressor shutdown protection due to excessive system load under high-temperature conditions.

[0043] The following is for reference. Figure 1 Dehumidifier 100 according to an embodiment of the present utility model is described. Dehumidifier 100 includes compressor 1, condenser 2, throttling component 3, evaporator 4 and centrifugal fan 11.

[0044] The compressor 1 has a discharge port; the condenser 2 includes a total inlet for refrigerant to flow into the condenser 2 and a total outlet for refrigerant to flow out of the condenser 2, the total inlet being connected to the discharge port; the throttling assembly 3 includes a first end and a second end; as shown... Figure 2As shown, the evaporator 4 includes a first set of heat exchange pipes 41 and a second set of heat exchange pipes 42. The first set of heat exchange pipes 41 is located at the bottom of the evaporator 4. The first set of heat exchange pipes 41 includes a first inlet 411 and a first outlet 412. A first refrigerant flow path and a second refrigerant flow path are connected in parallel between the first inlet 411 and the total outlet, so that the refrigerant flowing out of the total outlet can selectively flow from the first refrigerant flow path or the second refrigerant flow path to the first inlet 411. The throttling component 3 is located in the first refrigerant flow path and the second refrigerant flow path. One of the paths is such that the refrigerant flowing from the main outlet to the first inlet 411 can bypass the throttling component 3; the first outlet 412 is connected to the first end of the throttling component 3 so that the refrigerant flowing out of the first outlet 412 can flow into the throttling component 3; the second set of heat exchange pipes 42 is located above the first set of heat exchange pipes 41, and the second set of heat exchange pipes 42 includes a second inlet 421, which is connected to the second end of the throttling component 3 so that the refrigerant flowing out of the throttling component 3 can flow into the evaporator 4 from the second inlet 421.

[0045] Specifically, to solve the above problems, the evaporator 4 in this application is provided with a first set of heat exchange pipes 41 and a second set of heat exchange pipes 42. The first set of heat exchange pipes 41 is located at the bottom of the evaporator 4. Based on this, when the dehumidifier 100 is in a low-temperature operating condition, where the temperature is below 5°C, the high-temperature refrigerant discharged from the total outlet of the condenser 2 enters the first inlet 411 through the refrigerant flow path without the throttling component 3. From the first inlet 411, it enters the first set of heat exchange pipes 41, and then flows into the throttling component 3 from the first outlet 412 of the first set of heat exchange pipes 41. This ensures that the refrigerant flowing from the total outlet to the first inlet 411 does not pass through the throttling component 3, but instead passes through the first heat exchange pipes 41. The refrigerant then flows from the first outlet 412 to the throttling component 3. The refrigerant flowing out from the throttling component 3 then enters the evaporator through the second inlet 421 of the second set of heat exchange pipes 42 to achieve heat exchange. Thus, in this application, the high-temperature refrigerant output from the total outlet of the condenser 2 is controlled to first enter the first set of heat exchange pipes 41. This allows the high-temperature refrigerant output from the total outlet of the condenser 2 to directly enter the first set of heat exchange pipes 41, instead of first entering the throttling component 3 for cooling and pressure reduction. This utilizes the high-temperature refrigerant in the first set of heat exchange pipes 41 to heat the bottom of the evaporator 4, thereby avoiding the problem of frost and ice buildup at the bottom of the evaporator 4, which would exacerbate the frost problem, improve the dehumidification effect of the dehumidifier 100, and enhance the user experience.

[0046] Furthermore, when the dehumidifier 100 operates under high temperature and high humidity conditions or when the external surface temperature (condensing temperature) of the condenser 2 is close to the compressor 1 protection condition, wherein the high temperature and high humidity conditions are a temperature higher than 30°C and a humidity higher than 80%, and the compressor 1 protection condition is an external surface temperature (condensing temperature) reaching 60°C, the high-temperature refrigerant discharged from the total outlet of the condenser 2 enters the first inlet 411 through the refrigerant flow path without the throttling component 3, enters the first set of heat exchange pipes 41 from the first inlet 411, and then flows into the throttling component 3 from the first outlet 412 of the first set of heat exchange pipes 41. This ensures that the refrigerant flowing from the total outlet to the first inlet 411 does not pass through the throttling component 3, but instead flows through the first heat exchange pipes 41 and then from the first outlet 412 to the throttling component 3. The refrigerant flowing out from the throttling component 3 then enters the evaporator through the second inlet 421 of the second set of heat exchange pipes 42 to achieve heat exchange. Thus, in this application, the high-temperature refrigerant output from the total outlet of the condenser 2 first enters the first set of heat exchange pipes 41, and then returns to the compressor 1 through the throttling component 3 and the second set of heat exchange pipes 42. This allows the high-temperature refrigerant output from the total outlet of the condenser 2 to enter the first set of heat exchange pipes 41 for further cooling, thereby increasing the area of ​​the condenser 2 and reducing the area of ​​the evaporator 4. This reduces the condensing temperature and condensing pressure on the condenser 2 side, thereby reducing the system load and avoiding the problem of compressor 1 shutting down due to excessive system load under high-temperature conditions. This increases the reliability of the system under extreme high-temperature conditions.

[0047] Furthermore, when the dehumidifier 100 operates under normal temperature conditions, that is, when the dehumidifier 100 operates under non-extreme temperature conditions, the high-temperature refrigerant output from the total outlet of the condenser 2 first enters the throttling component 3. The refrigerant flowing out from the throttling component can flow into the evaporator through the second inlet. That is, the refrigerant that has been cooled and depressurized after flowing out from the throttling component 3 passes through the complete pipeline of the evaporator 4 for heat dissipation before returning to the compressor 1, thereby ensuring the dehumidification effect of the dehumidifier 100 under normal temperature conditions and improving the performance of the dehumidifier 100.

[0048] Based on this, the evaporator 4 in this application is equipped with a first set of heat exchange pipes 41 and a second set of heat exchange pipes 42 to selectively discharge high-temperature refrigerant to the first set of heat exchange pipes 41 or the throttling component 3. Under normal operating conditions, the high-temperature refrigerant flows from the throttling component 3 into the complete evaporator pipes, thereby ensuring the dehumidification effect of the dehumidifier 100 under normal operating conditions. Under low-temperature or high-temperature and high-humidity conditions, the high-temperature refrigerant is discharged to the first set of heat exchange pipes 41 to increase the bottom temperature of the evaporator 4 and reduce the refrigerant temperature on the condenser 2 side. This avoids the problem of frost and ice forming at the bottom of the evaporator 4, which exacerbates the degree of frost formation. This improves the dehumidification effect of the dehumidifier 100, enhances the user experience, and also avoids the problem of compressor 1 shutting down due to excessive system load under high-temperature conditions, increasing the reliability of the system under extreme high-temperature conditions.

[0049] In some embodiments, the dehumidifier 100 draws in humid air from outside through an internal fan. The humid air condenses after passing through the evaporator 4, and the water droplets produced by condensation are collected. However, the air temperature after dehumidification by the evaporator 4 is low and different from the indoor temperature. Therefore, after condensation, the air needs to be heated by the condenser 2, and finally the air is discharged by the fan to achieve dehumidification of the indoor air.

[0050] According to the dehumidifier 100 of this utility model, based on the connection method of the first set of heat exchange pipes 41 and the second set of heat exchange pipes 42 in the evaporator 4 with the throttling component 3, the refrigerant output from the condenser is selectively controlled to enter the first set of heat exchange pipes or the throttling component. Thus, under normal operating conditions, high-temperature refrigerant flows from the throttling component 3 into the complete evaporator pipes, thereby ensuring the dehumidification effect of the dehumidifier under normal operating conditions. Under low temperature or high temperature and high humidity conditions, the high-temperature refrigerant flowing out from the total outlet of the condenser 2 does not flow through the throttling component 3 to the first inlet 411, but flows from the first inlet 411 into the first set of heat exchange pipes 41 of the evaporator 4, and then flows through the throttling component 3 into the second set of heat exchange pipes 42 of the evaporator 4. This increases the temperature at the bottom of the evaporator and reduces the temperature of the refrigerant on the condenser side, thereby avoiding the problem of frost and ice buildup at the bottom of the evaporator, which exacerbates the frost problem. It also avoids the problem of the compressor shutting down due to excessive system load under high temperature conditions.

[0051] In some embodiments, such as Figure 1 As shown, compressor 1 also has an air inlet (not shown in the figure), such as Figure 2 As shown, the second set of heat exchange pipelines 42 also includes a second outlet 422, wherein the second outlet 422 is connected to the air inlet so that the refrigerant flowing out from the second outlet 422 enters the compressor 1 from the air inlet.

[0052] Specifically, the second outlet 422 discharges the refrigerant from the evaporator 4 after heat exchange and enters the compressor 1 through the compressor inlet, thereby completing the refrigerant cycle.

[0053] In some embodiments, the dehumidifier 100 further includes a control valve assembly 10.

[0054] Since the dehumidifier is an integrated unit, the evaporator and condenser are very close together. The control valve group 10 is set in the refrigerant flow path between the evaporator 4 and the throttling component 3 and / or the condenser 2 to connect the condenser's main outlet, the evaporator's bottom inlet, and the throttling component. The control valve group 10 is used to change the flow direction of the refrigerant.

[0055] Specifically, by controlling the working state of the control valve group 10, the refrigerant output from the condenser 2 is selectively directed to either the first refrigerant flow path or the second refrigerant flow path to the first inlet 411. That is, the refrigerant flowing from the total outlet to the first inlet 411 may or may not pass through the throttling component 3. Thus, under normal operating conditions, high-temperature refrigerant flows from the throttling component 3 into the complete evaporator pipeline, ensuring the dehumidification effect of the dehumidifier 100 under normal operating conditions. Under low-temperature or high-temperature and high-humidity operating conditions, the high-temperature refrigerant is discharged to the first heat exchange pipeline 41 to increase the bottom temperature of the evaporator 4 and reduce the refrigerant temperature on the condenser 2 side. This avoids the problem of frost and ice buildup at the bottom of the evaporator 4, which exacerbates the frost problem. It also avoids the problem of compressor 1 shutting down due to excessive system load under high-temperature operating conditions.

[0056] In some embodiments, the throttling component 3 is located in the first refrigerant flow path, and the control valve group 10 includes a first state. When the control valve group 10 is in the first state, the refrigerant flowing out of the total outlet enters the compressor 1 sequentially through the second refrigerant flow path, the first set of heat exchange pipelines 41, the throttling component 3, and the second set of heat exchange pipelines 42. At this time, the first set of heat exchange pipelines 41 and the second set of heat exchange pipelines 42 are disconnected.

[0057] Specifically, when the control valve assembly 10 is in the first state, the refrigerant flow direction is as follows: Figure 2 and Figure 3As shown, the refrigerant flows out from the main outlet of the condenser 2, enters the first inlet 411 of the first set of heat exchange pipes 41 through the second refrigerant flow path, and then enters the first set of heat exchange pipes 41 through the first inlet 411. After entering the first set of heat exchange pipes 41, it enters the throttling assembly 3 through the first outlet 412 of the first set of heat exchange pipes 41. After being cooled by the throttling assembly 3, it flows into the second inlet 421 of the second set of heat exchange pipes 42, and finally flows to the air inlet of the compressor 1 through the second outlet 422 of the second heat exchange pipe, entering the compressor 1. Based on this, the dehumidifier 100 operates under low temperature conditions or high temperature and high humidity conditions, controlling the control valve group 10. In the first state, the high-temperature refrigerant output from the total outlet of condenser 2 first enters the first set of heat exchange pipes 41, then returns to compressor 1 through the throttling component 3 and the second set of heat exchange pipes 42. This allows the high-temperature refrigerant output from the total outlet of condenser 2 to directly enter the first set of heat exchange pipes 41, instead of first entering the throttling component 3 for cooling and pressure reduction. This utilizes the high-temperature refrigerant before throttling in the first set of heat exchange pipes 41 to heat the bottom of evaporator 4, thus avoiding frost and ice buildup at the bottom of evaporator 4, which exacerbates the frosting problem and improves the dehumidification effect of the dehumidifier, enhancing the user experience. Simultaneously, after further cooling in the first set of heat exchange pipes 41, the high-temperature refrigerant output from the total outlet of condenser 2 increases the area of ​​condenser 2 while decreasing the area of ​​evaporator 4, reducing the condensing temperature and pressure on the condenser 2 side. This reduces the system load and prevents compressor 1 from shutting down due to excessive system load under high-temperature conditions, increasing the system's reliability under extreme high-temperature conditions.

[0058] In some embodiments, the control valve group 10 includes a second state. When the control valve group 10 is in the second state, the refrigerant flowing out of the main outlet enters the compressor 1 sequentially through the throttling assembly 3 and the second set of heat exchange pipelines 42.

[0059] Specifically, when the dehumidifier 100 operates under normal temperature conditions, i.e., under non-extreme temperature conditions, the control valve assembly 10 is in the second state, and the refrigerant flows as follows: Figure 4 As shown, the high-temperature refrigerant flowing out of the total outlet of the condenser 2 passes through the throttling component 3, and after being cooled and depressurized by the throttling component 3, it flows into the second inlet 421 of the second heat exchange pipeline 42, and finally flows through the second outlet 422 of the second heat exchange pipeline 42 to the air inlet of the compressor 1 to enter the compressor 1 and complete the cycle, thereby ensuring the dehumidification effect of the dehumidifier 100 under normal temperature conditions and improving the performance of the dehumidifier 100.

[0060] In some embodiments, the first outlet 412 is connected to the second inlet 421. This design ensures that when the dehumidifier 100 operates under normal temperature conditions, the high-temperature refrigerant output from the total outlet of the condenser 2 first enters the throttling assembly 3, then returns to the compressor 1 via the first set of heat exchange pipes 41 and the second set of heat exchange pipes 42 of the evaporator 4. In other words, the refrigerant flowing out of the throttling assembly 3, after being cooled and depressurized, undergoes heat dissipation through the complete evaporator piping before returning to the compressor 1. This significantly improves the heat exchange effect of the evaporator, thereby ensuring the dehumidification effect of the dehumidifier 100 under normal temperature conditions and improving the performance of the dehumidifier 100.

[0061] In some embodiments, the control valve group 10 includes a third state. When the control valve group 10 is in the third state, the refrigerant flowing out of the main outlet enters the compressor 1 sequentially through the throttling component 3, the first heat exchange pipeline 41, and the second heat exchange pipeline 42. At this time, the first heat exchange pipeline 41 and the second heat exchange pipeline 42 are connected, and the evaporator is a complete heat exchanger.

[0062] Specifically, when the dehumidifier 100 operates under normal temperature conditions, i.e., under non-extreme temperature conditions, the control valve assembly 10 is in the third state, and the refrigerant flows as follows: Figure 5 As shown, the refrigerant flows out from the main outlet of the condenser 2, and after being cooled and depressurized by the throttling component 3, it flows into the first heat exchange pipeline 41 through the first inlet 411. Then, based on the connection between the second inlet 421 and the first outlet 412 of the second heat exchange pipeline 42, it flows into the second heat exchange pipeline 42. Finally, it enters the compressor 1 through the second outlet 422 of the second heat exchange pipeline 42 to complete the cycle. At this time, the heat exchange pipeline of the evaporator 4 is a complete loop. Therefore, when the dehumidifier 100 is operating under normal temperature conditions, the control valve group 10 is controlled to be in the third state, thereby ensuring the dehumidification effect of the dehumidifier 100 under normal temperature conditions and improving the performance of the dehumidifier 100.

[0063] In some embodiments, such as Figure 1 As shown, the control valve group 10 includes a first control valve 5, a second control valve 6, a third control valve 7, and a fourth control valve 8.

[0064] Specifically, the first valve port a of the first control valve 5 is connected to the main outlet, and the second valve port b of the first control valve 5 is connected to the first inlet 411; the first valve port d of the second control valve 6 is connected to the third valve port c of the first control valve 5, and the second valve port f of the second control valve 6 is connected to the first end of the throttling assembly 3; the first valve port h of the third control valve 7 is connected to the second end of the throttling assembly 3, the second valve port g of the third control valve 7 is connected to the first inlet 411, and the third valve port i of the third control valve 7 is connected to the second inlet 421; the first valve port l of the fourth control valve 8 is connected to the third valve port e of the second control valve, the second valve port k of the fourth control valve 8 is connected to the first outlet, and the third valve port j of the fourth control valve 8 is connected to the second inlet 421.

[0065] Specifically, when the dehumidifier 100 operates under low-temperature or high-temperature and high-humidity conditions, the control valve group 10 is in the first state. When the control valve group is in the first state, the third valve port c of the first control valve 5, the first valve port d of the second control valve 6, the second valve port g of the third control valve 7, and the third valve port j of the fourth control valve 8 are all closed, while the remaining valve ports are open. Figure 3 As shown, at this time, the refrigerant flows from the main outlet of the condenser 2 through the first valve port a and the second valve port b of the first control valve 5, flows into the first set of heat exchange pipes 41 through the first inlet 411, enters the evaporator 4, and then passes through the first outlet 412, the second valve port k of the fourth control valve 8, the first valve port l of the fourth control valve 8, the third valve port e of the second control valve, and flows into the throttling assembly 3 through the second valve port f of the second control valve 6. After cooling and depressurization, it flows through the first valve port h and the third valve port i of the third control valve 7, flows back to the second set of heat exchange pipes 42 of the evaporator 4 through the second inlet 421, and finally flows into the compressor 1 through the second outlet 422 of the second set of heat exchange pipes 42 to complete the cycle.

[0066] Furthermore, when the dehumidifier 100 operates under normal temperature conditions, i.e., under non-extreme temperature conditions, the control valve group 10 is in the second state. When the control valve group is in the second state, the second valve port b of the first control valve 5, the third valve port e of the second control valve, the second valve port g of the third control valve 7, and the third valve port j of the fourth control valve 8 are all closed, while the remaining valve ports are open. Figure 4 As shown, at this time, the refrigerant flows from the main outlet of the condenser 2 through the first valve port a of the first control valve 5, the third valve port c of the first control valve 5, and the first valve port d of the second control valve 6. It then flows into the throttling assembly 3 through the second valve port f of the second control valve 6. After cooling and depressurization, it passes through the first valve port h and the third valve port i of the third control valve 7, and flows into the evaporator 4 through the second inlet 421. Finally, it flows into the compressor 1 through the second outlet 422 to complete the cycle.

[0067] Furthermore, when the dehumidifier 100 operates under normal temperature conditions, i.e., under non-extreme temperature conditions, the control valve group 10 is in the third state. When the control valve group is in the third state, the second valve port b of the first control valve 5, the third valve port e of the second control valve, the third valve port i of the third control valve 7, and the first valve port l of the fourth control valve 8 are all closed, while the remaining valve ports are open. At this time, the refrigerant flows as follows: Figure 5 As shown, the refrigerant flows from the main outlet of the condenser 2 through the first valve port a of the first control valve 5, the third valve port c of the first control valve 5, and the first valve port d of the second control valve 6. It then flows into the throttling assembly 3 through the second valve port f of the second control valve 6. After being cooled and depressurized, it flows through the first valve port h and the second valve port g of the third control valve 7, and then into the evaporator 4 through the first inlet 411. It then flows through the first outlet 412, the second valve port k of the fourth control valve 8, and the third valve port j of the fourth control valve 8, and then into the second set of heat exchange pipelines 42 through the second inlet 421. Finally, it flows into the compressor 1 through the second outlet 422 to complete the cycle.

[0068] In some embodiments, the first control valve 5, the second control valve 6, the third control valve 7, and the fourth control valve 8 are all electromagnetic three-way valves, thereby changing the refrigerant flow direction and reducing costs.

[0069] In some embodiments, the number of U-tubes in the first group of heat exchange pipelines 41 is less than the number of U-tubes in the second group of heat exchange pipelines 42.

[0070] Specifically, since the second set of heat exchange pipes 42 plays the main role in heat exchange in the evaporator 4, the number of U-tubes in the first set of heat exchange pipes 41 is less than the number of U-tubes in the second set of heat exchange pipes 42, so as to ensure the heat exchange capacity of the evaporator 4 and improve the dehumidification effect of the dehumidifier 100.

[0071] In some embodiments, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the internal heat exchange pipeline of the evaporator 4. The first group of heat exchange pipelines 41 includes a U-tube, or the first group of heat exchange pipelines 41 includes multiple U-tubes connected together. The number of U-tubes can be set according to the actual situation and there is no specific limitation.

[0072] The second aspect of this utility model provides an air conditioner 1000, such as... Figure 6 As shown, the air conditioner 1000 includes a dehumidifier 100 and a controller 200.

[0073] The controller 200 is connected to the control valve assembly 10 in the dehumidifier 100, and the controller 200 is used to control the on / off state of the control valve assembly 10. The dehumidifier 100 can be a household dehumidifier or an industrial dehumidifier, and there is no limitation in this regard.

[0074] According to the air conditioner 1000 of this utility model, the dehumidifier of the above embodiment can ensure the overall performance of the unit under normal temperature conditions, while avoiding the problem of increased frost on the evaporator due to frost at the bottom of the evaporator under low temperature conditions, and also avoid the problem of compressor shutdown protection due to excessive system load under high temperature conditions.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dehumidifier, characterized in that, include: The compressor has an exhaust port; A condenser, the condenser including a main inlet for refrigerant to flow into the condenser and a main outlet for refrigerant to flow out of the condenser, the main inlet being connected to the exhaust port; A throttling component, the throttling component including a first end and a second end; Evaporator, the evaporator comprising: The first set of heat exchange pipes is located at the bottom of the evaporator and includes: The first inlet includes a first refrigerant flow path and a second refrigerant flow path connected in parallel with the total outlet, so that the refrigerant flowing out of the total outlet can selectively flow from the first refrigerant flow path or the second refrigerant flow path to the first inlet, wherein the throttling component is located in one of the first refrigerant flow path and the second refrigerant flow path, so that the refrigerant flowing from the total outlet to the first inlet can bypass the throttling component; A first outlet is connected to a first end of the throttling assembly so that refrigerant flowing out of the first outlet flows into the throttling assembly; The second set of heat exchange pipes is located above the first set of heat exchange pipes, and the second set of heat exchange pipes includes: The second inlet is connected to the second end of the throttling assembly so that the refrigerant flowing out of the throttling assembly can flow into the evaporator through the second inlet.

2. The dehumidifier according to claim 1, wherein The compressor also has an air inlet, and the second set of heat exchange pipelines further includes: A second outlet is connected to the air inlet so that refrigerant flowing out from the second outlet enters the compressor through the air inlet.

3. The dehumidifier of claim 1, wherein, The dehumidifier also includes: A control valve assembly is disposed in the refrigerant flow path between the evaporator and the throttling assembly and / or the condenser, and the control valve assembly is used to change the flow direction of the refrigerant.

4. The dehumidifier according to claim 3, wherein The throttling component is located in the first refrigerant flow path. The control valve group includes a first state. When the control valve group is in the first state, the refrigerant flowing out of the total outlet enters the compressor sequentially through the second refrigerant flow path, the first set of heat exchange pipelines, the throttling component, and the second set of heat exchange pipelines.

5. The dehumidifier according to claim 3, wherein The control valve group includes a second state. When the control valve group is in the second state, the refrigerant flowing out of the main outlet enters the compressor sequentially through the throttling component and the second set of heat exchange pipelines.

6. The dehumidifier of claim 3, wherein, The first outlet is connected to the second inlet so that the refrigerant flowing from the first outlet can selectively flow to the second inlet or the throttling component.

7. The dehumidifier according to claim 6, wherein The control valve group includes a third state. When the control valve group is in the third state, the refrigerant flowing out of the main outlet enters the compressor sequentially through the throttling component, the first set of heat exchange pipelines, and the second set of heat exchange pipelines.

8. The dehumidifier according to any one of claims 3-6, characterized in that, The control valve assembly includes: A first control valve, wherein the first valve port of the first control valve is connected to the total outlet, and the second valve port of the first control valve is connected to the first inlet; The second control valve has its first valve port connected to the third valve port of the first control valve, and its second valve port connected to the first end of the throttling assembly. A third control valve, wherein the first valve port of the third control valve is connected to the second end of the throttling assembly, the second valve port of the third control valve is connected to the first inlet, and the third valve port of the third control valve is connected to the second inlet; A fourth control valve, wherein the first valve port of the fourth control valve is connected to the third valve port of the second control valve, the second valve port of the fourth control valve is connected to the first outlet, and the third valve port of the fourth control valve is connected to the second inlet.

9. The dehumidifier of claim 1, wherein, The number of U-tubes in the first group of heat exchange pipelines is less than the number of U-tubes in the second group of heat exchange pipelines.

10. An air conditioner characterized by comprising: include: The dehumidifier according to any one of claims 1-9; A controller is connected to the control valve group in the dehumidifier, and the controller is used to control the on / off state of the control valve group.

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