CN116007051A - Heating device, outdoor unit, air conditioner and frost prevention method - Google Patents
Heating device, outdoor unit, air conditioner and frost prevention method Download PDFInfo
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- CN116007051A CN116007051A CN202211578790.2A CN202211578790A CN116007051A CN 116007051 A CN116007051 A CN 116007051A CN 202211578790 A CN202211578790 A CN 202211578790A CN 116007051 A CN116007051 A CN 116007051A
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- 230000002265 prevention Effects 0.000 title description 7
- 238000010257 thawing Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
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Abstract
The invention relates to a heating device, an outdoor unit, an air conditioner and an anti-frost method. The heating device is used for an outdoor unit of an air conditioner and comprises a heater and an air supply assembly. The heater is arranged on the air inlet side of the condenser in the outdoor unit and is used for heating the air inlet flow positioned on the air inlet side. The air supply assembly comprises an air supply pipe, the air supply pipe is provided with an air inlet end and an air outlet end, the air inlet end is communicated to the air outlet side of the condenser, and the air outlet end is communicated to the air inlet side. According to the heating device, heat generated by the heater passes through the condenser along with the air inlet airflow, the air inlet airflow passing through the condenser becomes air outlet airflow, the heat carried by the air inlet airflow flows back to the air inlet side of the condenser, and the heat is recycled by converging the air inlet airflow. Therefore, the heat generated by the heater is not completely dissipated after passing through the condenser, but flows to the air inlet side along with the air outlet air flow, and the heat is continuously involved in the heating cycle, so that the heat utilization rate is definitely improved, the heating difficulty of the air inlet air flow is reduced, and the working efficiency of the heater is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heating device, an outdoor unit, an air conditioner and a frost prevention method.
Background
When the split air conditioner heats and runs in winter, the phenomenon of frosting of the condenser can occur to the outdoor unit located outdoors due to factors such as low outdoor temperature, low temperature generated by working and the like, the phenomenon is particularly obvious in severe cold weather, and the heating requirement is high in severe cold weather. In the prior art, a general unit is configured with defrosting control, namely heating is stopped after frosting, and a defrosting mode is started. An auxiliary heater is additionally arranged in part of the unit and is used for accelerating defrosting speed during defrosting.
However, the auxiliary heater of the existing external machine has serious heat dissipation and lower efficiency when working, which can increase the power consumption without doubt, and is neither economical nor environment-friendly.
Disclosure of Invention
In view of the above, it is necessary to provide a heating device, an outdoor unit, an air conditioner, and an anti-frost method that reduce heat loss and improve anti-frost heating efficiency.
A heating apparatus for an outdoor unit of an air conditioner, the heating apparatus comprising:
the heater is arranged on the air inlet side of the condenser in the outdoor unit and is used for heating air inlet flow positioned on the air inlet side; and
The air supply assembly comprises an air supply pipe, the air supply pipe is provided with an air inlet end and an air outlet end, the air inlet end is communicated to the air outlet side of the condenser, the air outlet end is communicated to the air inlet side, and the air supply pipe is used for guiding air outlet airflow positioned on the air outlet side to flow back to the air inlet side.
The heating device is characterized in that heat generated by the heater passes through the condenser along with the air inlet flow and heats the condenser. In the prior art, heat passing through the condenser would be completely blown out of the room following the flow of the exhaust air, and completely dissipated. However, in the heating device, the air inlet air flow passing through the condenser becomes the air outlet air flow, at least part of the air inlet air flow carries heat of the air outlet air flow and flows back to the air inlet side of the condenser, and the heat of the air inlet air flow is collected into the air inlet air flow, so that the heat of the air inlet air flow is recycled. Therefore, the heat generated by the heater is not completely dissipated after passing through the condenser, but flows to the air inlet side along with the air outlet air flow, and the heat is continuously involved in the heating cycle, so that the heat utilization rate is definitely improved, the heating difficulty of the air inlet air flow is reduced, and the working efficiency of the heater is improved.
In one embodiment, the air supply pipe is configured to have an air supply state and a non-air supply state, and is controlled to be switched between the air supply state and the non-air supply state;
when the air supply pipe is in the air supply state, guiding the air outlet airflow positioned at the air outlet side to flow back to the air inlet side;
and when the air supply pipe is in the non-air supply state, stopping guiding the air outlet airflow at the air outlet side to flow back to the air inlet side.
In one embodiment, the air supply assembly further comprises a valve capable of being controlled to be opened and closed, the valve is arranged on the pipe wall of the air supply pipe between the air inlet end and the air outlet end, and the air supply pipe is controlled to be switched between the air supply state and the non-air supply state through the opening and closing of the valve;
when the valve is closed, the air supply pipe is in the air supply state, and the air outlet air flow is blown into the air supply pipe from the air inlet end and is blown out from the air supply pipe from the air outlet end;
when the valve is opened, the air supply pipe is in the non-air supply state, and the air outlet air flow blows into the air supply pipe from the air inlet end and blows out from the air supply pipe from the valve.
In one embodiment, the heating device further comprises a temperature sensor, and the temperature sensor is arranged on the air outlet side of the condenser.
In one embodiment, the air outlet end of the air supply pipe is located at a side of the heater facing away from the condenser.
An outdoor unit comprises the heating device.
An air conditioner comprises the heating device or the outdoor unit.
An anti-frost method for an outdoor unit of an air conditioner, the anti-frost method comprising the steps of:
detecting the air outlet temperature T of the air outlet side of a condenser in the outdoor unit;
when the air outlet temperature T is less than the set temperature T 0 And when the condenser is used, the air inlet air flow positioned on the air inlet side of the condenser is heated, and the air outlet air flow positioned on the air outlet side is guided to flow back to the air inlet side.
In one embodiment, after the step of heating the air intake located on the air intake side of the condenser and guiding the air outlet located on the air outlet side to flow back to the air intake side, the method further includes:
when the air outlet temperature T is more than or equal to the set temperature T 0 And stopping heating the air inlet airflow positioned on the air inlet side after the set time is continuously exceeded, and stopping guiding the air outlet airflow positioned on the air outlet side to flow back to the air inlet side.
In one embodiment, the set temperature T 0 ＞0℃。
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view illustrating a structure of an outdoor unit having a heating device according to an embodiment of the present invention;
fig. 2 is a flow chart of an anti-frost method according to an embodiment of the invention.
Reference numerals illustrate: 100. an outdoor unit; 10. a heating device; 11. a heater; 13. an air supply pipe; 131. an air inlet end; 133. an air outlet end; 30. and a condenser.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the term "and/or" is merely an association relation describing the association object, meaning that three relations may exist, e.g. a and/or B, may be represented: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1, an embodiment of the present invention provides a heating apparatus 10 for an outdoor unit 100 of an air conditioner, which includes a heater 11 and an air supply assembly. The heater 11 is disposed on the air intake side of the condenser 30 in the outdoor unit 100, and is used for heating the air intake flow on the air intake side. The air supply assembly comprises an air supply pipe 13, the air supply pipe 13 is provided with an air inlet end 131 and an air outlet end 133, the air inlet end 131 is communicated to the air outlet side of the condenser 30, the air outlet end 133 is communicated to the air inlet side, and the air supply pipe 13 is used for guiding air outlet airflow on the air outlet side to flow back to the air inlet side.
The air inlet side of the condenser 30 is the air inlet side thereof, the air outlet side is the air outlet side thereof, and the air flow passing through the condenser 30 is blown from the air inlet side to the air outlet side, which can be generated by the driving of the condensing fan of the condenser 30. The air flow blown to the condenser 30 at the air inlet side is the air inlet air flow, and the air flow blown from the condenser 30 to the air outlet side is the air outlet air flow. The air-out air flow is blown into the air-supply pipe 13 from the air-inlet end 131 of the air-supply pipe 13, flows along the air-supply pipe 13 to be blown out from the air-outlet end 133, flows back to the air-inlet side of the condenser 30, and is converged into the air-in air flow. The inlet air flow and the outlet air flow are basically the same air flow, and the inlet air flow and the outlet air flow are only different names of the air flows in different positions and different states.
In the prior art, after passing through the condenser 30 to exchange heat with the air, the air is directly blown to the outside, and the air inlet side continuously sucks new outside air to be used as the air inlet, which is a high-efficiency heat exchange way acknowledged in the art. The heating device 10 is contrary to this conventional manner in that it is possible to reuse the heated air intake through the air supply duct 13 by the heater 11 in the heating device 10. On the basis that the air inlet flow is heated, in low-temperature weather, the recycling of the heated air flow of the air supply pipe 13 has obvious positive effects, and the condenser 30 and the heat exchange efficiency are improved. It will be appreciated that the power of the heater 11 should be selected to meet the requirements of the outdoor unit 100 under severe operating conditions.
The heating device 10 described above, the heat generated by the heater 11 follows the air intake flow through and heats the condenser 30. In the prior art, heat passing through the condenser 30 would be completely blown out of the room following the flow of the exhaust air, and completely dissipated. However, in the heating device 10, the air inlet air flow passing through the condenser 30 is used as the air outlet air flow, at least part of the heat is carried along with the air inlet air flow and flows back to the air inlet side of the condenser 30, and the air inlet air flow is continuously recycled. Therefore, the heat generated by the heater 11 is not completely dissipated after passing through the condenser 30, but flows to the air inlet side along with the air outlet flow, and continues to participate in the heating cycle, which definitely improves the heat utilization rate, reduces the heating difficulty of the air inlet flow, and improves the working efficiency of the heater 11. On the other hand, the heating device 10 may heat and defrost the condenser 30 during the operation of the air conditioner, or may heat and prevent the condenser 30 from frosting when it is not frosted during the operation of the air conditioner. Therefore, the heating device 10 can be operated under the condition that the air conditioner is not stopped no matter defrosting or frosting prevention is performed, and the frosting prevention and defrosting can be performed while the heating requirement is ensured.
Further, the air outlet end 133 of the air supply pipe 13 is located at a side of the heater 11 facing away from the condenser 30.
The air flow blown out from the air supply pipe 13 is heated by the heater 11 again, and then participates in the next heating cycle. This helps to increase the heating effect of the condenser 30, and the heater 11 is less difficult to secondarily heat the partially returned air flow.
It will be appreciated that the heater 11 should be configured to allow the flow of the inlet air to pass through and to complete heating thereof during the passing of the inlet air. The heater 11 may be in the form of a net, a bar, or the like, and may be specifically made of an electric heating wire, a heat generating film, or the like, and is not particularly limited herein.
In some embodiments, the heating device 10 further includes a temperature sensor disposed on the air-out side of the condenser 30.
The temperature sensor is used for detecting the air outlet temperature T of the air outlet air flow at the air outlet side in real time and combining the air outlet temperature T with the set temperature T 0 A comparison is made to determine whether the heater 11 needs to be activated for heating. Specifically, when the air outlet temperature T is smaller than the set temperature T 0 At this time, the heater 11 is started to heat the intake air flow on the intake side.
Further, for the purpose of preventing frosting, the temperature T is set 0 The temperature is set to 0℃or higher, specifically, 0.1℃or 0.5℃or 1℃or 2℃or the like. When the air outlet temperature T is less than the set temperature T 0 When the heater 11 is started, the air intake flow on the air intake side of the condenser 30 is heated, and then the air intake flow is cooledThe condenser 30 heats it before it reaches the frosting condition, preventing it from frosting.
In such a heating method, it is not necessary to repeat the air conditioning stoppage and defrost after every frosting. But before the frosting of the condenser 30, the condenser 30 can be heated in real time when the air conditioner works, so that the frosting is prevented, and the influence on the heat exchange efficiency of the condenser 30 due to the frosting is avoided.
Further, after the heater 11 is started, the temperature T of the air outlet is detected to be equal to or higher than the set temperature T 0 And after the duration exceeds the set time, the heater 11 is turned off to avoid the waste of energy due to overheating after the anti-frosting purpose is achieved. The set time may be 5s, 7.5s, 10s, or the like, and is not particularly limited herein.
In some embodiments, the air supply duct 13 is configured to have an air supply state and a non-air supply state, and is controlled to switch between the two. When the blast pipe 13 is in the air supply state, the air-out airflow on the air-out side is guided to flow back to the air-in side. When the air supply duct 13 is in the non-air supply state, the air-out air flow on the air-out side is stopped from being led back to the air-in side.
Therefore, whether the air is supplied from the air outlet side to the air inlet side can be controlled according to the working conditions. In a specific implementation, when the heater 11 starts heating, the air supply pipe 13 is synchronously adjusted to an air supply state, and the exhaust air flow is led to flow back to the air inlet side. Accordingly, when the heater 11 is turned off, the air supply duct 13 is adjusted to the non-air supply state simultaneously, and the exhaust air flow is not guided to flow back to the air intake side.
Further, the air supply assembly further comprises a valve (not shown) capable of being controlled to be opened and closed, the valve is arranged on the pipe wall of the air supply pipe 13 between the air inlet end 131 and the air outlet end 133, and the air supply pipe 13 is controlled to be switched between an air supply state and a non-air supply state through the opening and closing of the valve. Specifically, when the valve is closed, the air supply pipe 13 is in an air supply state, and the air outlet air flow is blown into the air supply pipe 13 from the air inlet end 131 and is blown out from the air supply pipe 13 from the air outlet end 133. When the valve is opened, the air supply pipe 13 is in a non-air supply state, and the air outlet air flow is blown into the air supply pipe 13 from the air inlet end 131 and is blown out from the air supply pipe 13 from the valve.
It will be appreciated that, to install the valve, an opening for communicating the inside and the outside of the air supply pipe 13 is formed in a pipe wall between the air inlet end 131 and the air outlet end 133 of the air supply pipe 13, and the valve is disposed at the opening and is communicated with the outside through opening and closing the control opening. When the valve is closed, the air outlet air flow entering the air supply pipe 13 from the air inlet end 131 flows through the valve in the flowing process of the air supply pipe 13, and can only continue flowing to the air outlet end 133 along the air supply pipe 13 to blow out due to the closing of the valve, so that the purpose of guiding the air outlet air flow to flow back to the air inlet side is achieved. When the valve is opened, the air outlet air flow with the air inlet end 131 entering the air supply pipe 13 flows through the valve in the flowing process along the air supply pipe 13, and the air outlet air flow can directly flow out of the valve at the moment without continuing to flow along the air supply pipe 13 due to the opening of the valve. Thus, the outlet air flow is no longer guided back to the outlet side by the air duct 13 at this time.
Preferably, the valve is disposed on the air outlet side of the condenser 30 and is directly opposite the condenser 30. Thus, when the valve is opened, the air blown from the condenser 30 can flow along the path itself, and directly blow out through the valve to the outside of the outdoor unit 100.
In other embodiments, the state switching of the air supply duct 13 may be achieved by changing the positions of the air inlet end 131 and/or the air outlet end 133, changing the on/off state of the air supply duct 13, and the like, which only needs to determine whether to guide the air outlet flow of the air outlet side to flow back to the air inlet side according to the need, which is not limited herein.
In the heating device 10, the temperature sensor detects the air outlet temperature T of the condenser 30 in real time, and when the air outlet temperature T is smaller than the set temperature T 0 When the heater 11 is started, the air inlet flow positioned on the air inlet side of the condenser 30 is heated. After being heated, the air intake flows through and heats the condenser 30, thereby achieving the purpose of preventing the condenser 30 from frosting. The intake air flow passing through the condenser 30 becomes the outlet air flow, is blown out from the condenser 30, and reaches the intake end 131 of the air supply duct 13, thereby being blown into the air supply duct 13. At this time, the blast pipe 13 is correspondingly in a blast state, and the air-out air flow entering the blast pipe 13 flows along the blast pipe 13 to be blown out by the blast pipe 13, reaches the air inlet side and merges into the air-in air flow, and is heated again to continue to participate in the heating cycle of the condenser 30. When the temperature sensor detects cold in real timeThe outlet temperature T of the condenser 30 is greater than the set temperature T 0 After the duration exceeds the set time, the heater 11 is turned off and the air supply pipe 13 is switched to a non-air supply state, and at this time, the air-out air flow entering the air supply pipe 13 flows along the air supply pipe 13 to be blown out by the valve facing the air supply pipe, and does not flow back to the air inlet side. It will be appreciated that when the heater 11 is not activated, the air supply duct 13 is correspondingly in a non-air supply state.
The invention also provides an outdoor unit 100 comprising the heating device 10.
The invention also provides an air conditioner comprising the heating device 10 or the outdoor unit 100.
Referring to fig. 2, the present invention also provides an anti-frost method for an outdoor unit 100 of an air conditioner, comprising the following steps:
s10, detecting the air outlet temperature T of the air outlet side of the condenser 30 in the outdoor unit 100;
s30, when the air outlet temperature T is less than the set temperature T 0 At this time, the intake air flow on the intake side of the condenser 30 is heated, and the exhaust air flow on the exhaust side is guided to flow back to the intake side.
The air inlet side of the condenser 30 is the air inlet side, the air outlet side is the air outlet side, and the air flow passing through the condenser 30 blows from the air inlet side to the air outlet side. The air flow blown to the condenser 30 at the air inlet side is the air inlet air flow, and the air flow blown from the condenser 30 to the air outlet side is the air outlet air flow. The outlet temperature T is the real-time temperature of the outlet air flow blown from the condenser 30 to the outlet side. In the present embodiment, the frost prevention method can be realized by the heating apparatus 10 described above.
In the above frost prevention method, the heat generated by heating passes through and heats the condenser 30 along with the air inlet flow, the air inlet flow passing through the condenser 30 is used as the air outlet flow, at least part of the heat is carried back to the air inlet side of the condenser 30, and the heat is continuously recycled as the air inlet flow. Therefore, the heating heat is not completely dissipated after passing through the condenser 30, but flows to the air inlet side along with the air outlet flow, and the heating heat is continuously involved in the heating cycle, so that the heat utilization rate is definitely improved, the heating difficulty of the air inlet flow is reduced, and the heating efficiency is improved.
Further, the temperature T is set 0 > 0 ℃. Will set the temperature T 0 When the temperature is set above 0 ℃, heating can be started when the condenser 30 is not frosted yet, so that the purpose of preventing frosting is achieved. Set temperature T 0 Specifically, the temperature may be 0.1 ℃, 0.5 ℃, 1 ℃ or 2 ℃, etc., and the present invention is not limited thereto.
In such a heating method, it is not necessary to repeat the air conditioning stoppage and defrost after every frosting. But before the frosting of the condenser 30, the air conditioner can heat the condenser 30 in real time while working, thereby preventing frosting and avoiding influencing the heat exchange efficiency of the condenser 30 due to frosting.
Further, after the step of heating the intake air flow on the intake side of the condenser 30 and guiding the outlet air flow on the outlet side to flow back to the intake side, the method further comprises:
when the air outlet temperature T is more than or equal to the set temperature T 0 And after the set time is continuously exceeded, stopping heating the air inlet airflow positioned on the air inlet side, and stopping guiding the air outlet airflow positioned on the air outlet side to flow back to the air inlet side.
After the anti-frosting purpose is achieved, the heating is stopped, so that the waste of energy caused by overheating can be avoided. The set time may be 5s, 7.5s, 10s, or the like, and is not particularly limited herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A heating device (10) for an outdoor unit (100) of an air conditioner, wherein the heating device (10) comprises:
the heater (11) is arranged on the air inlet side of the condenser (30) in the outdoor unit (100) and is used for heating the air inlet flow positioned on the air inlet side; and
The air supply assembly comprises an air supply pipe (13), the air supply pipe (13) is provided with an air inlet end (131) and an air outlet end (133), the air inlet end (131) is communicated to the air outlet side of the condenser (30), the air outlet end (133) is communicated to the air inlet side, and the air supply pipe (13) is used for guiding air outlet airflow located at the air outlet side to flow back to the air inlet side.
2. The heating device (10) according to claim 1, wherein the blast pipe (13) is configured to have a blast state and a non-blast state and is controlled to switch between the two;
when the air supply pipe (13) is in the air supply state, guiding the air outlet airflow positioned at the air outlet side to flow back to the air inlet side;
and when the air supply pipe (13) is in the non-air supply state, stopping guiding the air outlet airflow at the air outlet side to flow back to the air inlet side.
3. The heating device (10) according to claim 2, wherein the air supply assembly further comprises a valve capable of being controlled to be opened and closed, the valve is arranged on a pipe wall of the air supply pipe (13) between the air inlet end (131) and the air outlet end (133), and the air supply pipe (13) is controlled to be switched between the air supply state and the non-air supply state by opening and closing the valve;
when the valve is closed, the air supply pipe (13) is in the air supply state, and the air outlet air flows into the air supply pipe (13) from the air inlet end (131) and is blown out from the air supply pipe (13) from the air outlet end (133);
when the valve is opened, the air supply pipe (13) is in the non-air supply state, and the air outlet air flow is blown into the air supply pipe (13) from the air inlet end (131) and is blown out from the air supply pipe (13) from the valve.
4. The heating device (10) according to claim 1, wherein the heating device (10) further comprises a temperature sensor provided at an air outlet side of the condenser (30).
5. The heating device (10) according to claim 1, wherein the air outlet end (133) of the air supply duct (13) is located at a side of the heater (11) facing away from the condenser (30).
6. An outdoor unit (100) comprising the heating device (10) according to any one of claims 1 to 5.
7. An air conditioner comprising the heating device (10) according to any one of claims 1 to 5 or the outdoor unit (100) according to claim 6.
8. An anti-frost method for an outdoor unit (100) of an air conditioner, the anti-frost method comprising the steps of:
detecting an air outlet temperature T of an air outlet side of a condenser (30) in the outdoor unit (100);
when the air outlet temperature T is less than the set temperature T 0 And when the condenser is used, the air inlet air flow positioned on the air inlet side of the condenser (30) is heated, and the air outlet air flow positioned on the air outlet side is guided to flow back to the air inlet side.
9. The anti-frost method according to claim 8, characterized by further comprising, after the step of heating the intake air flow on the intake side of the condenser (30) and guiding the outlet air flow on the outlet side back to the intake side:
when the air outlet temperature T is more than or equal to the set temperature T 0 And after the set time is continuously exceeded, stopping heating the air inlet flow positioned on the air inlet side and stopping the guiding positionAnd the air outlet airflow at the air outlet side flows back to the air inlet side.
10. The anti-frost method according to claim 8, wherein the set temperature T 0 ＞0℃。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211578790.2A CN116007051A (en) | 2022-12-07 | 2022-12-07 | Heating device, outdoor unit, air conditioner and frost prevention method |
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| CN202211578790.2A CN116007051A (en) | 2022-12-07 | 2022-12-07 | Heating device, outdoor unit, air conditioner and frost prevention method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990004289A (en) * | 1997-06-27 | 1999-01-15 | 윤종용 | Defroster of air conditioner and control method |
| CN105371524A (en) * | 2014-08-26 | 2016-03-02 | 青岛海尔空调器有限总公司 | Compression type refrigerating and heating air conditioner system and outdoor unit defrosting method thereof |
| KR20170005651A (en) * | 2015-07-06 | 2017-01-16 | 김형진 | Indoor unit for cold storage and control method of defrosting thereof |
| CN106568133A (en) * | 2015-10-08 | 2017-04-19 | 孙海潮 | Refrigerating and heating pump type frostless air conditioner outdoor unit |
| CN107975887A (en) * | 2017-10-31 | 2018-05-01 | 青岛海尔空调器有限总公司 | A kind of device and air-conditioning for slowing down air-conditioner outdoor unit frosting |
| CN214249880U (en) * | 2020-12-28 | 2021-09-21 | 大连海尔空调器有限公司 | An air conditioner outdoor unit and an air conditioner |
| CN217235883U (en) * | 2022-01-29 | 2022-08-19 | 青岛海尔空调器有限总公司 | Auxiliary defrosting device for air conditioner outdoor unit and air conditioner outdoor unit |
-
2022
- 2022-12-07 CN CN202211578790.2A patent/CN116007051A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990004289A (en) * | 1997-06-27 | 1999-01-15 | 윤종용 | Defroster of air conditioner and control method |
| CN105371524A (en) * | 2014-08-26 | 2016-03-02 | 青岛海尔空调器有限总公司 | Compression type refrigerating and heating air conditioner system and outdoor unit defrosting method thereof |
| KR20170005651A (en) * | 2015-07-06 | 2017-01-16 | 김형진 | Indoor unit for cold storage and control method of defrosting thereof |
| CN106568133A (en) * | 2015-10-08 | 2017-04-19 | 孙海潮 | Refrigerating and heating pump type frostless air conditioner outdoor unit |
| CN107975887A (en) * | 2017-10-31 | 2018-05-01 | 青岛海尔空调器有限总公司 | A kind of device and air-conditioning for slowing down air-conditioner outdoor unit frosting |
| CN214249880U (en) * | 2020-12-28 | 2021-09-21 | 大连海尔空调器有限公司 | An air conditioner outdoor unit and an air conditioner |
| CN217235883U (en) * | 2022-01-29 | 2022-08-19 | 青岛海尔空调器有限总公司 | Auxiliary defrosting device for air conditioner outdoor unit and air conditioner outdoor unit |
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