CN209399491U - Air conditioner indoor unit and air conditioner - Google Patents

Abstract

The utility model relates to the technical field of air conditioners, and aims to solve the problem that the existing air conditioners have a low utilization rate of the cooling capacity in condensed water produced by indoor units. Therefore, the utility model provides an air conditioner indoor unit and an air conditioner. The indoor unit Including the air supply channel and the evaporator arranged in the air supply channel, the indoor unit also includes: a water receiving tray, which is arranged under the evaporator, for receiving the condensed water flowing out of the evaporator; Condensed water in the water pan; the condensed water pipeline, the inlet of which is connected to the water outlet of the water pump, the condensed water pipeline includes a heat exchange pipe section, and the heat exchange pipe section is arranged in the air supply channel to exchange heat with the air in the air supply channel. The air conditioner indoor unit and the air conditioner provided by the utility model can make full use of the cooling capacity in the condensed water produced by the indoor unit, improve the cooling efficiency of the air conditioner, avoid the waste of cooling capacity, and do not need to configure long-distance transportation pipelines, with low cost and good effect.

Description

Air conditioner indoor unit and air conditioner

technical field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and an air conditioner.

Background technique

During the cooling process of the air conditioner in summer, the evaporator located in the indoor unit will produce condensed water during the heat exchange with the air. The temperature of the condensed water is much lower than the temperature of the indoor air, and the cooling capacity contained in it can be recycled. value.

Some existing air conditioners usually drain the condensed water directly through the drain pipe without recycling it, resulting in a waste of cooling capacity; some air conditioners collect the condensed water and transport it to the condenser in the outdoor unit through pipelines , used to absorb the heat of the refrigerant in the condenser, accelerate the heat dissipation of the condenser, and realize the recovery and reuse of cold energy.

Existing air conditioners transport the condensed water generated by the indoor unit to the condenser of the outdoor unit by setting specially arranged pipes to recycle the condensed water, which not only consumes a lot of pipe materials, but also requires piping design and If the pipeline installation is not standardized, it will affect the transportation of condensed water; in addition, the condensed water will absorb the heat in the environment during the long-distance transportation, which will cause the temperature of the condensed water to rise. Part of the cooling capacity is lost, which reduces the utilization rate of condensed water.

Correspondingly, the art needs a kind of new air-conditioning indoor unit to solve the above-mentioned problems.

Utility model content

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the existing air conditioner has a low utilization rate of the cooling capacity in the condensed water generated by the indoor unit, the first aspect of the utility model provides an air conditioner indoor unit, the indoor The indoor unit includes an air supply channel and an evaporator arranged in the air supply channel, and the indoor unit also includes: a water receiving tray, which is arranged under the evaporator and is used to receive the condensed water flowing out of the evaporator; the water pump , which is used to pump the condensed water in the water receiving tray; the condensed water pipe, whose inlet is connected to the water outlet of the water pump, the condensed water pipe includes a heat exchange pipe section, and the heat exchange pipe section is arranged on the In the air supply channel, so as to exchange heat with the air in the air supply channel.

In the preferred technical solution of the air-conditioning indoor unit above, the heat exchange pipe section is arranged upstream or downstream of the air supply channel; or

The heat exchange tube section is formed on the evaporator.

In the preferred technical solution of the above air-conditioning indoor unit, the heat exchange pipe section is a serpentine pipe; and/or the outer periphery of the heat exchange pipe section is connected with cooling fins.

In the preferred technical solution of the above-mentioned indoor unit of the air conditioner, the water outlet of the water pump is also connected with a drain pipe.

In the preferred technical solution of the air-conditioning indoor unit above, the water outlet of the water pump is further connected with a switching valve, and the water pump is selectively communicated with the condensed water pipeline or the drainage pipeline by means of the switching valve.

In the preferred technical solution of the air-conditioning indoor unit above, the outlet of the condensed water pipe is arranged above the bottom of the water receiving pan, so that the condensed water can circulate under the action of the water pump.

In the preferred technical solution of the above air-conditioning indoor unit, a temperature sensor is connected to the end of the condensed water pipe, and the temperature sensor is used to detect the temperature of the condensed water flowing out from the end of the condensed water pipe.

In a preferred technical solution of the above-mentioned indoor unit of the air conditioner, a check valve is further connected between the inlet of the condensed water pipeline and the water outlet of the water pump.

In the preferred technical solution of the above-mentioned air-conditioning indoor unit, the air-conditioning indoor unit further includes a liquid level switch, and the liquid level switch can control the start and stop of the water pump according to the height of the condensed water in the water receiving tray.

The indoor unit of the air conditioner provided by the utility model collects the condensed water generated by the heat exchange between the evaporator and the air and then transports it back to the air supply channel in the indoor unit, so that the condensed water exchanges heat with the cold air in the air supply channel, The cold energy in the condensed water is transferred to the air to reduce the temperature of the air, so that the cold energy in the condensed water can be fully utilized. This process does not require special design and arrangement of long-distance pipelines, which avoids the long-distance transportation of cold energy Loss occurs during the process; in addition, to realize the utilization of cooling capacity in the utility model, it is only necessary to add a shorter condensed water delivery pipe on the basis of the original indoor unit device, the device configuration cost is low, the cooling capacity loss is small, and the utilization rate is high , can effectively improve the cooling efficiency of the air conditioner.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, by arranging the heat exchange pipe section in the condensed water pipeline upstream of the air supply channel, before the refrigerant in the evaporator exchanges heat with the air, That is, the air is pre-cooled by condensed water. When the pre-cooled air enters the evaporator to exchange heat with the refrigerant, due to the low initial temperature, a lower cold air temperature can be obtained under the same heat exchange time, thereby improving the cooling performance of the air conditioner. efficiency.

In the preferred technical solution of the utility model, by arranging the heat exchange pipe section in the condensed water pipeline downstream of the air supply channel, after the air exchanges heat with the refrigerant and cools down, further cooling of the cold air with the condensed water can obtain more Low cold air temperature, thereby improving the cooling efficiency of the air conditioner.

In the preferred technical solution of the utility model, by forming the condensed water pipe on the evaporator, the cooling capacity can be fully utilized, and the structure of the indoor unit can be made more compact, which is beneficial to the miniaturization design of the indoor unit.

In the preferred technical solution of the present utility model, by connecting cooling fins on the outer periphery of the heat exchange pipe section, it can not only improve the heat exchange efficiency between condensed water and air, but also make the condensation formed during the heat exchange process between the heat exchange pipe section and air Water can flow down the cooling fins, thus avoiding splashing of condensed water.

In the preferred technical solution of the utility model, by connecting the drain pipe to the water outlet of the water pump, when the condensed water exceeds the amount of water that the water receiving tray can accept, or when the condensed water releases the cooling capacity and loses its use value, it can be drained through the drain pipe. Condensate drains quickly.

By setting the switching valve, it is convenient to connect the water receiving tray and the condensed water pipe, or to connect the water receiving tray and the drain pipe, so as to determine the circulation state of the condensed water according to the needs.

By arranging the outlet of the condensed water pipe above the bottom of the water receiving pan, the condensed water can circulate and exchange heat multiple times under the action of the water pump, so as to make full use of the cooling capacity of the condensed water.

By connecting a temperature sensor at the end of the condensed water pipe to detect the temperature of the condensed water flowing out from the end of the condensed water pipe, the intelligent control of the condensed water circulation process is realized.

By connecting a one-way valve between the inlet of the condensate pipe and the water outlet of the water pump, when the condensed water in the water receiving pan is sucked away by the water pump, the water level will drop and the motor of the water pump will stop to protect the water pump. The valve can prevent the condensed water from flowing backward after the water pump stops. It can not only protect the water pump, but also trap the condensed water in the heat exchange pipe section, thereby prolonging the heat exchange time of the condensed water in the pipe section and allowing the cooling capacity to be released more fully.

By setting a liquid level switch capable of controlling the start and stop of the water pump according to the height of the condensed water in the water receiving tray, the automatic control of the condensed water circulation or discharge is realized.

The second aspect of the utility model also provides an air conditioner, which includes the air conditioner indoor unit described in any one of the above technical solutions.

Those skilled in the art can understand that, since the air conditioner is configured with the aforementioned indoor unit, it has all the technical effects of the aforementioned air conditioner indoor unit, and will not be repeated here.

Description of drawings

Describe air-conditioning indoor unit of the present utility model below with reference to accompanying drawing, in accompanying drawing:

Fig. 1 is the first embodiment of the air conditioner indoor unit of the present invention, which shows a single flow path of condensed water;

Fig. 2 is the second embodiment of the air conditioner indoor unit of the present invention, which shows the circulation path of condensed water;

List of reference signs:

1. Indoor unit; 10. Evaporator; 11. Condensed water pipe; 110. Heat exchange pipe section; 111. Drainage pipe section; 12. Water tray; 13. Liquid level switch; 14. Water pump; 15. One-way valve; 16 , drainage pipe; 17, switch valve; 18, temperature sensor.

Detailed ways

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the utility model, and are not intended to limit the protection scope of the utility model. For example, although the following embodiments are explained in conjunction with domestic air-conditioning indoor units, this is not limiting. The technical solutions of the present utility model are also applicable to commercial air-conditioning, such as multi-connected air-conditioning systems. The change of objects does not depart from the principle and scope of the present invention.

In addition, in order to better illustrate the present utility model, numerous specific details are given in the following specific embodiments. It will be understood by those skilled in the art that the present invention may be practiced without some of the specific details. In some examples, other internal structures of the indoor unit well known to those skilled in the art are not described in detail, so as to highlight the gist of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "up", "down", "left", "right", "inside" and "outside" indicating direction or positional relationship are based on the terms shown in the accompanying drawings. The direction or positional relationship is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

In addition, it should be noted that, in the description of the present utility model, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two spaces. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Based on the problem pointed out by the background technology that the existing air conditioner has a low utilization rate of the cooling capacity in the condensed water produced by the indoor unit, the utility model provides an air conditioner indoor unit and an air conditioner equipped with the air conditioner indoor unit, aiming to make full use of indoor The cooling capacity of the condensed water generated by the machine can improve the cooling efficiency of the air conditioner and avoid the waste of cooling capacity.

The air conditioner indoor unit 1 provided by the utility model includes an air supply channel and an evaporator 10 arranged in the air supply channel. The evaporator 10 uses the principle that the liquid low-temperature refrigerant is easy to evaporate, absorb heat and transform into steam at low pressure, absorb the heat of the air in the air supply channel, reduce the temperature of the air in the air supply channel and blow it into the room to achieve the purpose of cooling . The evaporator 10 located in the air supply channel has an air inlet and an air outlet, and the channel section used to supply air to the air inlet of the evaporator 10 in the air supply channel is defined as the upstream of the evaporator 10, and is used to transport the air supplied by the evaporator 10. The channel section of the cold air blown out of the air outlet is defined as the downstream of the evaporator 10 .

Referring to Fig. 1 and Fig. 2, Fig. 1 is the first embodiment of the air conditioner indoor unit of the present invention, which shows a single flow path of condensed water; Fig. 2 is the second embodiment of the air conditioner indoor unit of the present invention Embodiment, wherein the circulating flow path of condensed water is shown. The air conditioner indoor unit 1 also includes:

The water receiving tray 12 is arranged under the evaporator 10 and is used for receiving condensed water flowing out of the evaporator 10 . Usually, the water receiving tray 12 is arranged directly below the evaporator 10, and the heat exchange coil of the evaporator 10 is provided with cooling fins, and the condensed water will gather through the cooling fins and drip directly below the evaporator 10. , the water receiving tray 12 arranged directly below the evaporator 10 can well receive the condensed water flowing down from the fins. Of course, the water receiving tray 12 can also be slightly offset relative to the evaporator 10, as long as it can well receive the condensed water.

The water pump 14 is used for pumping the condensed water in the water receiving tray 12 . When the height of the condensed water in the water receiving tray 12 reaches the preset liquid level, the water pump 14 can be turned on to pump the condensed water in the water receiving tray 12 to a high place.

Condensed water pipeline 11, its inlet is connected to the water outlet of water pump 14. The condensed water pipe 11 includes at least a heat exchange pipe section 110, which is arranged in the air supply channel to exchange heat with the air in the air supply channel, thereby transferring the cold energy in the condensed water to the air in the air supply channel In order to reduce the temperature of the air and improve the cooling efficiency of the air conditioner. The condensed water pipe 11 can be formed as one pipe, or can be formed by splicing multiple pipes of the same or different materials. In order to obtain a higher cost performance, the heat exchange pipe section 110 is preferably an aluminum pipe, and its pipe diameter can be thicker than that of the heat exchange coil in the evaporator 10. In this way, on the one hand, the flow resistance of condensed water can be reduced, and on the other hand On the one hand, it can slow down the flow rate of condensed water so that the condensed water can fully release the cooling capacity. It can be understood that the condensed water pipe 11 can also be made of other metal materials that are easy to conduct heat, such as copper tubes. Compared with copper tubes, aluminum tubes are cheaper and lighter.

In addition, the condensed water pipeline 11 may also be provided with a water inlet pipe section, a drain pipe section 111 and the like. The water inlet pipe section is connected between the inlet of the heat exchange pipe section 110 and the water outlet of the water pump 14, and pipes with poor thermal conductivity such as plastic pipes and rubber pipes can be used to reduce the cooling loss of the condensed water before entering the heat exchange pipe section 110. The drain pipe section 111 is connected to the outlet of the heat exchange pipe section 110 , and a common plastic pipe with low price and light weight can be used to discharge the condensed water after releasing the cooling capacity.

Further, a one-way valve 15 is also connected between the inlet of the condensed water pipeline 11 and the water outlet of the water pump 14 to prevent the condensed water from flowing backwards after the water pump 14 is stopped. As shown in FIGS. 1 and 2 , the one-way valve 15 The condensed water can only flow from the water pump 14 to the condensed water pipe 11, and the condensed water is prevented from flowing from the condensed water pipe 11 to the water pump 14, thereby reducing the probability of damage to the water pump 14. In addition, the retention time of condensed water in the heat exchange pipe section 110 can also be prolonged , thereby prolonging the heat exchange time with the air.

The heat exchange tube section 110 may be arranged upstream of the air supply channel. Specifically, when the heat exchange pipe section 110 is arranged upstream of the air supply pipe, the indoor air inhaled by the indoor unit 1 first exchanges heat with condensed water to achieve pre-cooling, and then exchanges heat with the evaporator 10 located downstream of the heat exchange pipe section 110. The refrigerant exchanges heat, and the temperature is further reduced. Compared with the indoor unit 1 in the prior art, the temperature of the cold air blown out is lower, so that the indoor temperature quickly reaches the required temperature, and the cooling efficiency of the air conditioner is improved.

Alternatively, the heat exchange pipe section 110 may be arranged downstream of the air supply channel. Specifically, when the heat exchange pipe section 110 is arranged downstream of the air supply duct, the indoor air inhaled by the indoor unit 1 first exchanges heat with the refrigerant in the evaporator 10 , the temperature drops, and then exchanges heat with the heat exchange pipe section 110 located downstream of the evaporator 10 . The condensed water in the cooling system exchanges heat, and the temperature is further reduced, so that the temperature of the cold air blown out is lower.

Alternatively, the heat exchange tube section 110 may also be formed on the evaporator 10 . The condensate water pipe 11 can be arranged on the evaporator 10 side by side with the heat exchange coil used for circulating the refrigerant. Of course, the two are not connected to each other, which is equivalent to setting the heat exchange pipe section 110 in the air supply channel. upstream or downstream.

Further, the heat exchange pipe section 110 can be wound into a serpentine coil, which can increase the circulation path of the condensed water and prolong the heat exchange time, thereby fully releasing the cooling capacity of the condensed water.

In order to better release the cooling capacity in the condensed water, cooling fins can be connected to the outer periphery of the heat exchange pipe section 110 , the principle is the same as the cooling fins connected to the refrigerant pipeline in the evaporator 10 .

In order to realize rapid discharge of condensed water, a drain pipe 16 may be connected to the water outlet of the water pump 14 . Referring to FIG. 2 , the water outlet of the water pump 14 is connected to the condensate pipe 11 and the drain pipe 16 at the same time, and only communicates with one pipe during operation. When the condensed water in the water receiving tray 12 needs to be discharged quickly, the water pump 14 and the drain pipe 16 can be connected to directly discharge the condensed water to the outside.

It can be understood that, in FIG. 1, the water outlet of the water pump 14 can also be connected to the drain pipe 16, and the drain pipe section 111 in the condensed water pipe 11 can also be connected to the drain pipe 16 to form a three-way pipe to realize various drainage. model.

Further, the water outlet of the water pump 14 is also connected with a switch valve 17 , and the water pump 14 is selectively communicated with the condensed water pipeline 11 or the drain pipeline 16 by means of the switch valve 17 . Specifically, with reference to Fig. 2, the switching valve 17 is connected to the water outlet of the water pump 14, by means of the switching operation of the switching valve 17, the condensed water pipeline 11 and the water pump 14 can be connected under the situation of needing to utilize condensed water, and the drain pipeline 16 is cut off; In the case of rapid drainage, the drain pipe 16 is connected to the water pump 14, and the passage of the condensed water pipe 11 is cut off to realize rapid drainage.

It can be understood that the valve can be a two-position three-way solenoid valve, a pendulum valve, a three-way one-way valve, etc., or directly set independent shut-off valves at the inlet of the condensate pipe 11 and the inlet of the drain pipe 16. .

In some cases, the condensed water still contains usable cooling capacity after a single release of cooling. At this time, if the condensed water is directly drained, it will cause a waste of cooling capacity, and the outlet of the condensed water pipe 11 is set at Above the bottom of the water receiving tray 12, the condensed water can be circulated under the action of the water pump 14 to realize the cyclic utilization of the condensed water, which can solve this problem. Specifically, referring to FIG. 2 , the outlet of the condensed water pipe 11 (the outlet can be formed on the drain pipe section 111 ) goes deep into the water receiving pan 12 directly, and the condensed water in the water receiving pan 12 is pumped into the heat exchange pipe section 110 by the water pump 14 for exchange. After heating, it flows into the water receiving tray 12 again, and after being mixed with the original condensed water in the water receiving tray 12, it is pumped into the condensed water pipeline 11 again through the water pump 14 to perform secondary cooling, even several times, until the condensed water in the condensed water After the amount is fully released, connect the drain pipe 16 to discharge the condensed water after the temperature rises.

Furthermore, the outlet of the condensed water pipe 11 is set above the bottom of the water receiving tray 12 and away from the end of the water pump 14, so as to prevent the condensed water returned from the previous time to be sucked away by the water pump 14, so that the condensed water can be fully released. cold.

For the problem of when to discharge the condensed water through the drain pipe, the number of cycles of the condensed water can be preset, for example, by monitoring the running time of the water pump 14 , and intelligent control can also be realized by means of the temperature sensor 18 . Referring to Fig. 2, a temperature sensor 18 is connected at the end of the condensed water pipe 11, and the temperature sensor 18 is used to detect the temperature of the condensed water flowing out from the end of the condensed water pipe 11, and when the detected condensed water temperature is lower than the preset temperature, the continuous Run the water pump 14 to realize the circulation of condensed water; when the temperature sensor 18 detects that the temperature of the condensed water at the end reaches or is higher than the preset temperature, it indicates that the condensed water has been fully cooled. At this time, the switch of the valve can be controlled to turn on the water pump 14 and drain pipe 16, the condensed water after sufficient cooling is discharged to the outside.

It can be understood that, affected by the ambient temperature, the time for the condensed water to reach the preset temperature is different. Therefore, compared with the way of setting the number of cycles, using the temperature sensor 18 to control the start and stop of the water pump 14 and the switching of the valve can obtain more Good results.

Further, in order to accurately determine whether the amount of condensed water reaches the level of circulation, a liquid level switch 13 capable of controlling the start and stop of the water pump 14 according to the height of the condensed water in the water receiving tray 12 can be provided in the air conditioner indoor unit 1 . Specifically, the liquid level switch 13 can be a float switch, or can be an ultrasonic liquid level switch 13 and other types of switches, as long as the change of the liquid level can be fed back. Referring to Fig. 1, the liquid level switch 13 adopts a float switch, which floats on the liquid surface of the water receiving tray 12. When the float switch floats to a certain height with the increase of condensed water, the water pump 14 starts and starts to pump the condensed water to the Heat exchange is performed in the condensed water pipe 11 . Referring to FIG. 2 , the float switch is floating near the end of the condensate pipe 11 , and its working principle is the same as that in FIG. 1 .

It should be noted that although the liquid level switch 13 in FIG. 1 is arranged near the water pump 14, and the liquid level switch 13 in FIG. It is floating. Figure 1 and Figure 2 are just examples of its position at a certain moment, and do not mean that it must be set in this way.

As a specific embodiment, referring to Fig. 1, the indoor unit 1 in this embodiment includes an evaporator 10, a water receiving tray 12 is arranged below the evaporator 10, and a water pump 14 for pumping condensed water is connected to the water receiving tray 12 , a liquid level switch 13 is arranged in the water receiving tray 12, and a condensed water pipe 11 for transporting condensed water is arranged downstream of the air supply channel. The heat exchange pipe section 110 of the condensed water pipe 11 is wound into a serpentine structure, A check valve 15 is connected between the water pipe 11 and the water outlet of the water pump 14 . Wherein, the condensed water pipeline 11 further includes a drain pipe section 111, and the drain pipe section 111 is used to discharge the cooled condensed water to the outside. The indoor unit 1 in this embodiment can realize a single flow of condensed water, and the specific working process is as follows:

S11, start the air-conditioning system, select the air-conditioning operation mode as the cooling mode, and after the air-conditioning runs for a period of time, the condensed water generated gradually gathers in the water receiving tray 12;

S12. The liquid level switch 13 detects the change of the liquid level in real time. When it is detected that the liquid level reaches the preset water level, the water pump 14 is started, and the condensed water pump 14 in the water receiving tray 12 is started to be sent to the condensed water pipeline 11;

S13. When the condensed water fills the heat exchange pipe section 110 after pumping for a certain period of time, the operation of the water pump 14 is suspended, and the throttle valve prevents the condensed water from flowing back to the water tray 12, so that the condensed water trapped in the heat exchange pipe section 110 can have enough Time exchanges heat with the air, thereby fully releasing the cold energy in it;

S14. After exchanging heat for a certain period of time, start the water pump 14 again, discharge the condensed water released from the heat exchange pipe section 110 through the drain pipe section 111, and the heat exchange pipe section 110 is filled with low-temperature condensed water, thereby performing the next round of cooling release process;

S15. Repeat the above condensed water replacement process.

It can be understood that, in the above control method, the water pump 14 may not be suspended during the cooling process of the condensed water, and only the time when the condensed water flows through the condensed water pipe 11 for one time is used for heat exchange.

As another specific embodiment, referring to Fig. 2, the indoor unit 1 in this embodiment includes an evaporator 10, a water receiving tray 12 is arranged below the evaporator 10, and a water pump for pumping condensed water is connected to the water receiving tray 12 14. A liquid level switch 13 is provided in the water receiving tray 12, and a condensed water pipeline 11 for transporting condensed water is provided downstream of the air supply channel. The heat exchange pipe section 110 of the condensed water pipeline 11 is wound into a serpentine structure, and the condensation The end of water pipeline 11 is arranged on the top of water receiving tray 12, is connected with check valve 15 between condensed water pipeline 11 and the water outlet of water pump 14, is also connected with drainage pipeline 16 at the water outlet of water pump 14, and is used for The switching valve 17 of the condensed water pipeline 11 or the drain pipeline 16 is selectively connected, and a temperature sensor 18 is connected to the end of the condensed water pipeline 11 . The indoor unit 1 in this embodiment can realize the circulation of condensed water, and the specific working process is as follows:

S21. Start the air-conditioning system, select the air-conditioning operation mode as the cooling mode, and after the air-conditioning operates for a period of time, the condensed water generated gradually gathers in the water receiving tray 12;

S22. The liquid level switch 13 detects the change of the liquid level height in real time. When it is detected that the liquid level reaches the preset water level height, the water pump 14 is started, and the switching valve 17 is controlled to connect the water outlet of the condensed water pipeline 11 and the water pump 14, and the water pump 14 is started to be drained. The condensed water pump 14 in the water receiving tray 12 is sent to the condensed water pipeline 11;

S23. When the condensed water fills the heat exchange pipe section 110 after pumping for a certain period of time, the operation of the water pump 14 is suspended, and the throttle valve prevents the condensed water from flowing back to the water tray 12, so that the condensed water trapped in the heat exchange pipe section 110 can have enough Time exchanges heat with the air, thereby fully releasing the cold energy in it;

S24. After exchanging heat for a certain period of time, start the water pump 14 again, and return the condensed water released from the heat exchange pipe section 110 to the water receiving tray 12. Water is filled again, so that the next round of cooling process is carried out;

S25. The temperature sensor 18 detects the temperature of the condensed water discharged from the end of the condensed water pipe 11 in real time. When it is detected that the temperature of the discharged condensed water is close to the ambient temperature of the air conditioner, the switch valve 17 is activated, and the drain pipe 16 and the water pump 14 are connected. , and cut off the passage between the water pump 14 and the condensed water pipe 11 at the same time, and drain the condensed water from the drain pipe 16 .

It can be understood that, in the above control method, the water pump 14 may not be suspended during the cooling process of the condensed water, and only the time when the condensed water flows through the condensed water pipe 11 for one time is used for heat exchange.

The air conditioner provided in another embodiment of the present invention includes an outdoor unit, an indoor unit 1, and a pipeline connecting the indoor unit 1 and the outdoor unit to form a refrigerant circulation. The indoor unit 1 in this embodiment is the indoor unit 1 mentioned above.

It can be understood that, since the air conditioner is equipped with the aforementioned indoor unit 1 , it has all the technical effects of the aforementioned air conditioner indoor unit 1 , which will not be repeated here.

So far, the technical solution of the utility model has been described in conjunction with the preferred implementations shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific implementations. On the premise of not departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the utility model.

Claims (10)

1. a kind of air conditioner indoor unit, the indoor unit includes air-supply passage and the evaporator that is arranged in the air-supply passage, It is characterized in that, the indoor unit further include:

Drip tray is arranged below the evaporator, for accepting the condensed water of the evaporator outflow；

Water pump is used to pump the condensed water in the drip tray；

Condensing water conduit, entrance are connected to the water outlet of the water pump, and the condensing water conduit includes heat exchange pipeline section, described to change Hot pipe section is arranged in the air-supply passage, to carry out heat exchange with the air in the air-supply passage.

2. air conditioner indoor unit according to claim 1, which is characterized in that the heat exchange pipeline section is arranged in the air-supply passage Upstream or downstream；Or

The heat exchange pipeline section is formed on the evaporator.

3. air conditioner indoor unit according to claim 2, which is characterized in that the heat exchange pipeline section is coiled pipe；And/or The periphery of the heat exchange pipeline section is connected with radiating fin.

4. air conditioner indoor unit according to claim 1, which is characterized in that the water outlet of the water pump is also connected with drainpipe Road.

5. air conditioner indoor unit according to claim 4, which is characterized in that the water outlet of the water pump is also connected with switching valve Door, the water pump are selectively communicated with by the switch valve and the condensing water conduit or the drainage pipeline.

6. air conditioner indoor unit according to claim 5, which is characterized in that the outlet of the condensing water conduit is arranged described The top that drip tray is tried to get to the heart of a matter so that condensed water can under the action of the water pump circulation.

7. air conditioner indoor unit according to claim 6, which is characterized in that the end of the condensing water conduit is also connected with temperature Sensor is spent, the temperature sensor is used to detect the temperature of the condensed water of the end outflow of the condensing water conduit.

8. air conditioner indoor unit described in any one of -7 according to claim 1, which is characterized in that the entrance of the condensing water conduit Check valve is also connected between the water outlet of the water pump.

9. air conditioner indoor unit according to claim 8, which is characterized in that the air conditioner indoor unit further includes liquid-level switch, The liquid-level switch can control the start and stop of the water pump according to the height of the condensed water in the drip tray.

10. a kind of air-conditioning, which is characterized in that including air conditioner indoor unit of any of claims 1-9.