CN204786843U - Ceiling air conditioner - Google Patents

Abstract

The utility model discloses a ceiling type air conditioner, including the water collector, the evaporator coil, the drain pump, temperature sensor in the dish, indoor temperature sensor and drainage controller, the water collector is used for holding the comdenstion water that the outer pipe wall of evaporator coil condenses, temperature sensor arranges in the water collector in the dish, and be used for detecting the temperature in the dish of water collector, indoor temperature sensor is used for detecting indoor temperature, drainage controller, with temperature sensor in the dish, indoor temperature sensor is connected, and start the drain pump when the temperature in the dish that temperature sensor detected is less than the indoor temperature that indoor temperature sensor detected in the dish and discharge the comdenstion water in the water collector. The utility model provides a ceiling type air conditioner, which aims to reduce the false action and the non-action of a drainage pump.

Description

Ceiling air conditioner

technical field

The utility model relates to the field of air conditioners, in particular to a ceiling-mounted air conditioner.

Background technique

Ceiling-type air conditioners are currently widely used, and they have the advantages of strong concealment, elegant appearance, and less indoor space. For the ceiling-mounted air conditioner, the condenser is arranged above the air outlet, and a water tray for receiving and discharging condensed water dripping from the condenser is arranged below the condenser. After the condensed water drops onto the water receiving tray, the water receiving tray collects the condensed water into the water receiving tray. A float for detecting the water level and a drainage pump for drainage are installed in the water receiving tray; in order to prevent the float from floating around, it is usually necessary to restrict the position of the float so that the float can only be at a specific position and float up and down according to the buoyancy. As shown in Figure 1, the float 1' is set on the guide rod 2' of the water level switch. When the condensed water flows into the water tank, under the action of the buoyancy of the condensed water, the float 1' floats up along the guide rod 2' of the water level switch. When the float 1' When floating to a certain height, the drainage pump 3' starts to drain water from the water receiving tray.

Adopt the mode of float to control drainage, there are following deficiencies:

1. In addition to being affected by the water level, the float is also easily affected by other factors. For example, when the fan needs to generate a large amount of air, the vibration generated by the fan will cause the float to float up and down, resulting in malfunction;

2. If there is any foreign matter adhered to the guide rod of the water level switch, the float will not be able to float up and down freely, thus affecting the normal operation of the drainage pump.

Utility model content

The main purpose of the utility model is to provide a ceiling-mounted air conditioner and the air conditioner, aiming at reducing the misoperation and failure of the drainage pump.

In order to achieve the above purpose, the utility model provides a ceiling-mounted air conditioner, which includes a water receiving pan, an evaporator coil, a drainage pump, a temperature sensor in the pan, an indoor temperature sensor and a drainage controller;

The water receiving tray is used to accommodate condensed water condensed from the outer tube wall of the evaporator coil;

The temperature sensor in the tray is placed in the water receiving tray and is used to detect the temperature in the tray of the water receiving tray;

The indoor temperature sensor is used to detect the indoor temperature;

The drainage controller is connected with the temperature sensor in the tray and the indoor temperature sensor, and starts the drain controller when the temperature in the tray detected by the temperature sensor in the tray is lower than the indoor temperature detected by the indoor temperature sensor. the drain pump to drain the condensed water in the drip pan

Preferably, a first voltage stabilizing circuit is provided between the indoor temperature sensor and the drainage controller, and the first voltage stabilizing circuit includes a first power supply input terminal, a first diode, a second diode, The first capacitor, the second capacitor, the first resistor, the second resistor and the indoor temperature output terminal, the first power input terminal is connected to the power supply terminal of the indoor temperature sensor and the cathode of the first diode;

One end of the first resistor is respectively connected to the detection output end of the indoor temperature sensor, the anode of the first diode, the cathode of the second diode, and the anode of the first capacitor, and the other end of the first resistor is respectively connected to the second and second capacitors. The anode of the pole tube and the negative pole of the first capacitor are both grounded; one end of the second resistor is connected to the positive pole of the first capacitor, and the other end of the second resistor is connected to the output end of the indoor temperature and grounded through the second capacitor.

Preferably, a second voltage stabilizing circuit is provided between the temperature sensor in the panel and the drainage controller, and the second voltage stabilizing circuit includes a second power supply input terminal, a third diode, a fourth diode , the third capacitor, the fourth capacitor, the third resistor, the fourth resistor and the output terminal of the temperature in the panel; the second power input terminal is connected to the power supply terminal of the temperature sensor in the panel and the cathode of the third diode;

One end of the third resistor is respectively connected to the detection output end of the temperature sensor in the panel, the anode of the third diode, the cathode of the fourth diode, and the anode of the third capacitor, and the other end of the third resistor is respectively connected to the fourth The anode of the diode and the negative pole of the third capacitor are both grounded; one end of the fourth resistor is connected to the positive pole of the third capacitor, and the other end of the fourth resistor is connected to the output end of the temperature in the panel and grounded through the fourth capacitor.

Preferably, the ceiling-mounted air conditioner also includes a coil temperature sensor;

the coil temperature sensor for detecting the coil temperature of the evaporator coil;

The drain controller is also connected to the coil temperature sensor, and when the temperature in the pan detected by the temperature sensor in the pan is lower than the indoor temperature detected by the indoor temperature sensor and the indoor temperature detected by the indoor temperature sensor When the temperature is higher than the indoor temperature detected by the indoor temperature sensor, start the drain pump to discharge the condensed water in the water receiving tray

Preferably, a third voltage stabilizing circuit is provided between the coil temperature sensor and the drainage controller, and the third voltage stabilizing circuit includes a third power supply input terminal, a fifth diode, a sixth diode , the fifth capacitor, the sixth capacitor, the fifth resistor, the sixth resistor and the coil temperature output terminal, the power input terminal is connected to the power supply terminal of the coil temperature sensor and the cathode of the fifth diode;

One end of the fifth resistor is respectively connected to the detection output end of the coil temperature sensor, the anode of the fifth diode, the cathode of the sixth diode, and the positive pole of the fifth capacitor. The other end, the anode of the sixth diode, and the negative pole of the fifth capacitor are all grounded; one end of the sixth resistor is connected to the positive electrode of the fifth capacitor, and the other end of the sixth resistor is connected to the coil temperature output terminal connected, and grounded via the sixth capacitor.

Preferably, the coil temperature sensor is mounted on the outer tube wall of the evaporator coil.

Preferably, the coil temperature sensor is detachably installed on the outer tube wall of the evaporator coil.

Preferably, the temperature sensor in the tray is placed at the bottom of the water receiving tray.

Preferably, the temperature sensor in the tray is detachably mounted on the water receiving tray.

In the utility model, the temperature sensor in the panel and the indoor temperature sensor will not be affected by the vibration when the fan is running at high speed during detection, thus avoiding misoperation, and at the same time, there is no foreign matter adhering to the guide rod of the water level switch in the prior art Therefore, compared with the prior art, the utility model reduces the misoperation or non-operation of the drainage pump.

Description of drawings

Fig. 1 is the structural representation of float of this prior art;

Fig. 2 is a partial structural schematic diagram of the ceiling-mounted air conditioner of the present invention;

Fig. 3 is a circuit diagram of the temperature detection circuit of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. 1 water tray 1; 2 evaporator coil 2; 3 temperature sensor 3 in the plate; 4 coil temperature sensor 4; 5 indoor temperature sensor 5;

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 2 is a partial structural schematic diagram of the ceiling-mounted air conditioner of the present invention.

The utility model provides a ceiling-mounted air conditioner, which includes a water receiving tray 1, an evaporator coil 2, a drainage pump, a temperature sensor 3 inside the tray, an indoor temperature sensor 5 and a drainage controller (the drainage pump and the drainage controller are shown in Fig. not shown), the water tray 1 is used to accommodate the condensed water condensed from the outer tube wall of the evaporator coil 2; in the process of cooling or dehumidification, the evaporator coil 2 will exchange heat with the air to reduce the temperature of the air , and during heat exchange, due to the decrease in the temperature of the outer tube wall of the evaporator coil 2, the water molecules in the air will condense on the outer tube wall of the evaporator coil 2 to form condensed water. Under the effect of gravity, the condensed water will drop to the water receiving tray 1; and the inner temperature sensor 3 is placed in the water receiving tray 1, and is used to detect the inner temperature of the water receiving tray 1, and the inner temperature sensor is used to detect the indoor temperature The drainage controller is connected with the temperature sensor 3 in the panel and the indoor temperature sensor 5, and the drainage controller also starts the drainage pump according to the detection of the temperature sensor 3 in the panel and the temperature sensor 5 in the room to discharge the condensed water in the water receiving tray 1 , specifically, when the temperature inside the tray is lower than the indoor temperature, the drainage controller starts the drainage pump to discharge the condensed water in the water receiving tray 1; When the detection of the temperature sensor 3 in the tray and the temperature sensor 5 in the room comes, the drain pump is started to discharge the condensed water in the water receiving tray 1 .

Based on the above, the internal temperature sensor 3 and the indoor temperature sensor 5 will not be affected by the vibration when the fan is running at high speed during detection, thereby avoiding malfunctions, and at the same time, there is no problem of foreign matter adhering to the guide rod of the water level switch in the prior art. Therefore, compared with the prior art, the utility model reduces the misoperation or non-action of the drainage pump.

Specifically, based on the comparison between the temperature in the pan and the indoor temperature, that is, when it is detected that the temperature in the pan is lower than the indoor temperature, start the drain pump to discharge the condensed water in the water receiving pan 1; In the process, the temperature of the evaporator coil 2 is lower than the temperature of the indoor air, and the temperature of the condensed water condensed on the outer wall of the evaporator coil 2 will also be lower than the temperature of the indoor air. Behind the tray 1, due to the existence of condensed water in the water receiving tray 1, the temperature in the tray will be lower than the temperature of the indoor air, that is, the temperature in the tray is lower than the indoor temperature. Therefore, when the temperature in the tray is detected to be lower than the indoor temperature , it can be seen that condensed water has accumulated in the water receiving tray 1, and the drain pump is started to discharge the condensed water in the water receiving tray 1.

Further, the ceiling-mounted air conditioner also includes a coil temperature sensor 4; wherein, the coil temperature sensor 4 is connected to the drain controller, so that the coil temperature sensor 4 is used to detect the coil temperature of the evaporator coil 2, and the drain The controller starts the drainage pump to discharge the condensed water in the water receiving tray 1 according to the detection of the temperature sensor 3 in the panel, the indoor temperature sensor 5 and the coil temperature sensor 4; specifically, when the temperature in the panel is lower than the indoor temperature, the drainage controller Start the drain pump to drain the condensed water in the drip tray 1.

During the cooling or dehumidification process of the ceiling-mounted air conditioner, the temperature of the evaporator coil 2 is lower than the temperature of the indoor air, and the temperature of the condensed water condensed on the outer tube wall of the evaporator coil 2 will also be lower than that of the indoor air After the condensed water drops to the water receiving tray 1, due to the existence of condensed water in the water receiving tray 1, the temperature in the tray will be lower than the temperature of the indoor air, that is, the temperature in the tray is lower than the indoor temperature, so , when it is detected that the temperature in the tray is lower than the indoor temperature, it can be known that there is condensed water accumulated in the water receiving tray 1, and the drain pump is started to discharge the condensed water in the water receiving tray 1; During the process, the temperature of the condensed water will also undergo a certain heat exchange with the indoor air, which increases the temperature of the condensed water to a certain extent. Therefore, the temperature in the pan should be lower than the temperature of the coil; based on this, in the cooling or dehumidification process , when the temperature in the panel is lower than the indoor temperature, and the temperature in the panel is greater than the temperature of the coil, it can be known that the ceiling-mounted air conditioner is abnormal; therefore, the utility model also detects in time whether the ceiling-mounted air conditioner is abnormal ; Further, the drainage controller can also be connected with an alarm device, which sends an alarm when the ceiling-mounted air conditioner runs abnormally.

A first voltage stabilizing circuit is provided between the indoor temperature sensor 5 and the drainage controller, and the first voltage stabilizing circuit includes a first power supply input terminal, a first diode D1, a second diode D2, a first capacitor C1, a second capacitor Two capacitors C2, the first resistor R1, the second resistor R2 and the indoor temperature output terminal, the first power input terminal is connected to the power supply terminal of the indoor temperature sensor 5, and the cathode of the first diode D1; one end of the first resistor R1 is connected to The detection output end of the indoor temperature sensor 5 is connected to the anode of the first diode D1, the cathode of the second diode D2 is connected to the anode of the first capacitor C1, and the other end of the first resistor R1 is respectively connected to the second diode The anode of D2 and the negative pole of the first capacitor C1 are both grounded; one end of the second resistor R2 is connected to the positive pole of the first capacitor C1, and the other end of the second resistor R2 is connected to the indoor temperature output terminal Tr, and grounded through the second capacitor C2 .

A second voltage stabilizing circuit is provided between the temperature sensor 3 in the panel and the drain controller, and the second voltage stabilizing circuit includes a second power supply input terminal, a third diode D3, a fourth diode D4, a third capacitor C3, The fourth capacitor C4, the third resistor R3, the fourth resistor R4 and the output terminal of the temperature in the panel; the second power input terminal is connected to the power supply terminal of the temperature sensor 3 in the panel and the cathode of the third diode D3; the third resistor One end of R3 is respectively connected to the detection output end of the temperature sensor 3 in the panel, the anode of the third diode D3, the cathode of the fourth diode D4, and the positive electrode of the third capacitor C3, and the other end of the third resistor R3 is respectively The anode of the fourth diode D4 and the negative pole of the third capacitor C3 are both grounded; one end of the fourth resistor R4 is connected to the positive pole of the third capacitor C3, and the other end of the fourth resistor R4 is connected to the output terminal of the temperature in the panel, and Grounded via the fourth capacitor C4.

A third voltage stabilizing circuit is provided between the coil temperature sensor 4 and the drain controller, and the third voltage stabilizing circuit includes a third power supply input terminal, a fifth diode D5, a sixth diode D6, a fifth capacitor C5, The sixth capacitor C6, the fifth resistor R5, the sixth resistor R6 and the coil temperature output terminal, the power supply input terminal are connected to the power supply terminal of the coil temperature sensor 4 and the cathode of the fifth diode D5;

One end of the fifth resistor R5 is respectively connected to the detection output end of the coil temperature sensor 4, the anode of the fifth diode D5, the cathode of the sixth diode D6, and the positive electrode of the fifth capacitor C5, and the fifth resistor R5 The other end, the anode of the sixth diode D6, and the negative electrode of the fifth capacitor C5 are all grounded; one end of the sixth resistor R6 is connected to the positive electrode of the fifth capacitor C5, and the other end of the sixth resistor R6 is connected to the output end of the coil temperature , and grounded via the sixth capacitor C6.

Specifically, as shown in FIG. 3 , the first power input terminal, the second power input terminal and the third power input terminal share a common power input terminal VCC.

As shown in FIG. 3, the voltage (such as 5V) input by the power supply input terminal VCC is clamped by the first diode D1, the third diode D3, and the fifth diode D5 to protect the circuit components. Avoid burning components due to excessive input voltage; moreover, through the first resistor R1, the second diode D2, the first capacitor C1, the second resistor R2, and the second capacitor C2, the temperature data detected by the indoor temperature sensor 5 After smoothing, it is output to the drainage controller through the indoor temperature output terminal Tr; at the same time, through the third resistor R3, the fourth diode D4, the third capacitor C3, the fourth resistor R4, and the fourth capacitor C4 to control the internal temperature sensor 3 The detected temperature data is smoothed and output to the drainage controller through the temperature output terminal Tc in the panel; at the same time, through the fifth resistor R5, the sixth diode D6, the fifth capacitor C5, the sixth resistor R6, the sixth The capacitor C6 smoothes the temperature data detected by the coil temperature sensor 4 and outputs it to the drainage controller through the coil temperature output terminal Tp.

In addition, according to the above situation, in this implementation, the drainage controller may include a control chip (for example: 78F0511/44PIN), and the control chip includes an input end of the indoor temperature, an input end of the temperature inside the panel, and an input end of the coil temperature, and Correspondingly connected to the indoor temperature output terminal Tr, the panel temperature output terminal Tc and the coil temperature output terminal Tp, of course, the control chip also includes a drainage pump control signal output terminal, and the drainage pump control signal output terminal can output the control signal As for the control switch used to control the drainage pump, the control switch can be a relay.

In the utility model, the coil temperature sensor 4 is detachably installed on the outer tube wall of the evaporator coil 2, the inner temperature sensor 3 is detachably installed on the bottom of the water receiving tray 1, and the indoor temperature sensor 5 is detachably installed It is enough to install it where the indoor temperature can be better detected; the detachable installation method is adopted, on the one hand, it is convenient to improve production efficiency and reduce production cost during the production process; When one of the tube temperature sensor 4 and the temperature sensor 3 in the tray is damaged, it is easy to disassemble and replace, and it is convenient for maintenance; in addition, the temperature sensor 3 in the tray is installed at the bottom of the water receiving tray 1, so that the temperature sensor 3 in the tray can be directly soaked In the condensed water, the temperature sensor 3 in the panel can obtain the outdoor temperature more accurately.

It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, people should consider this The combination of technical solutions does not exist, nor is it within the scope of protection required by the utility model.

The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the specification of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (9)

1. A ceiling-mounted air conditioner, characterized in that it comprises a water receiving tray, an evaporator coil, a drainage pump, a temperature sensor in the tray, an indoor temperature sensor and a drainage controller; The water receiving tray is used to accommodate condensed water condensed from the outer tube wall of the evaporator coil; The temperature sensor in the tray is placed in the water receiving tray and is used to detect the temperature in the tray of the water receiving tray; The indoor temperature sensor is used to detect the indoor temperature; The drainage controller is connected with the temperature sensor in the tray and the indoor temperature sensor, and starts the drain controller when the temperature in the tray detected by the temperature sensor in the tray is lower than the indoor temperature detected by the indoor temperature sensor. The drain pump is used to drain the condensed water in the drain pan. 2. The ceiling-mounted air conditioner according to claim 1, wherein a first voltage stabilizing circuit is provided between the indoor temperature sensor and the drainage controller, and the first voltage stabilizing circuit includes a first Power supply input terminal, first diode, second diode, first capacitor, second capacitor, first resistor, second resistor and the indoor temperature output terminal, the first power input terminal and the power supply of the indoor temperature sensor terminal, the cathode connection of the first diode; One end of the first resistor is respectively connected to the detection output end of the indoor temperature sensor, the anode of the first diode, the cathode of the second diode, and the anode of the first capacitor, and the other end of the first resistor is respectively connected to the second and second capacitors. The anode of the pole tube and the negative pole of the first capacitor are both grounded; one end of the second resistor is connected to the positive pole of the first capacitor, and the other end of the second resistor is connected to the output end of the indoor temperature and grounded through the second capacitor. 3. The ceiling-mounted air conditioner according to claim 1, wherein a second voltage stabilizing circuit is provided between the temperature sensor in the panel and the drainage controller, and the second voltage stabilizing circuit includes a first Two power supply input terminals, the third diode, the fourth diode, the third capacitor, the fourth capacitor, the third resistor, the fourth resistor and the output terminal of the temperature in the panel; the second power input terminal and the temperature sensor in the panel The power supply terminal is connected to the cathode of the third diode; One end of the third resistor is respectively connected to the detection output end of the temperature sensor in the panel, the anode of the third diode, the cathode of the fourth diode, and the anode of the third capacitor, and the other end of the third resistor is respectively connected to the fourth The anode of the diode and the negative pole of the third capacitor are both grounded; one end of the fourth resistor is connected to the positive pole of the third capacitor, and the other end of the fourth resistor is connected to the output end of the temperature in the panel and grounded through the fourth capacitor. 4. The ceiling-mounted air conditioner according to claim 1, further comprising a coil temperature sensor; the coil temperature sensor for detecting the coil temperature of the evaporator coil; The drain controller is also connected to the coil temperature sensor, and when the temperature in the pan detected by the temperature sensor in the pan is lower than the indoor temperature detected by the indoor temperature sensor and the indoor temperature detected by the indoor temperature sensor When the temperature is higher than the indoor temperature detected by the indoor temperature sensor, the drainage pump is started to discharge the condensed water in the water receiving tray. 5. The ceiling-mounted air conditioner according to claim 4, wherein a third voltage stabilizing circuit is provided between the coil temperature sensor and the drainage controller, and the third voltage stabilizing circuit includes a first Three power supply input terminals, the fifth diode, the sixth diode, the fifth capacitor, the sixth capacitor, the fifth resistor, the sixth resistor and the coil temperature output terminal, the power input terminal and the coil temperature The power supply end of the sensor is connected to the cathode of the fifth diode; One end of the fifth resistor is respectively connected to the detection output end of the coil temperature sensor, the anode of the fifth diode, the cathode of the sixth diode, and the positive pole of the fifth capacitor. The other end, the anode of the sixth diode, and the negative pole of the fifth capacitor are all grounded; one end of the sixth resistor is connected to the positive electrode of the fifth capacitor, and the other end of the sixth resistor is connected to the coil temperature output terminal connected, and grounded via the sixth capacitor. 6 . The ceiling-mounted air conditioner according to claim 4 , wherein the coil temperature sensor is installed on the outer tube wall of the evaporator coil. 7. The ceiling-mounted air conditioner according to claim 6, wherein the coil temperature sensor is detachably installed on the outer tube wall of the evaporator coil. 8. The ceiling-mounted air conditioner according to claim 1, wherein the temperature sensor in the tray is placed at the bottom of the water receiving tray. 9 . The ceiling-mounted air conditioner according to claim 1 , wherein the temperature sensor in the tray is detachably installed on the water receiving tray.