CN108954699B - Air conditioner operation frequency adjusting method and air conditioner system - Google Patents
Air conditioner operation frequency adjusting method and air conditioner system Download PDFInfo
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- CN108954699B CN108954699B CN201710352855.4A CN201710352855A CN108954699B CN 108954699 B CN108954699 B CN 108954699B CN 201710352855 A CN201710352855 A CN 201710352855A CN 108954699 B CN108954699 B CN 108954699B
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Abstract
The invention discloses an air conditioning system, which comprises an indoor unit and an outdoor unit, and is characterized by also comprising: the first temperature sensor is arranged at an air inlet of an indoor unit of the air conditioner; the second temperature sensor is arranged on a middle coil of an evaporator of an indoor unit of the air conditioner; a third temperature sensor disposed on a condenser of an outdoor unit of an air conditioner; the internal machine mainboard is used for obtaining a target temperature TS set by a user; and the controller is connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the internal machine mainboard. The invention has the beneficial effects that: when the temperature of the inner ring is too low, the upper limit frequency of the operation allowed by the variable frequency air conditioner can be increased.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner operation frequency adjusting method and an air conditioner system.
Background
In the heating mode of the air conditioner, the inverter air conditioner divides the upper limit frequency of the operation allowed by the air conditioner compressor into several sections as shown in fig. 1 according to different outer ring temperatures. Fig. 1 is a graph of "outer ring temperature-compressor operating frequency upper limit value" in the prior art, which shows the maximum frequency at which an air conditioner can operate under the conditions that the air conditioner does not have the inner coil protection limit frequency reduction and the system high pressure does not exceed the maximum value allowed by the compressor specification under the corresponding outer ring temperature working condition in the normal load state.
For example: the upper limit frequency of the system which can stably run is F3(70HZ) through experimental verification under the working condition that the inner ring is at the temperature of 20 ℃/and the outer ring is at the temperature of 10 ℃, namely the outer ring temperature is in the interval from T4 to T5. However, when the temperature of the inner ring is low, the temperature and the high voltage of the system coil pipe are both reduced, the upper limit frequency of the operation allowed by the variable frequency air conditioner exceeds F3, and if the upper limit frequency of the operation allowed by starting is still F3, the temperature rise speed of the room is greatly reduced, so that the heating comfort is affected.
Disclosure of Invention
The invention aims to provide an air conditioner operation frequency adjusting method and an air conditioner system, which can improve the upper limit frequency of the allowable operation of a variable frequency air conditioner when the temperature of an inner ring is too low in a heating mode of the air conditioner.
Specifically, the invention is realized by the following technical scheme:
an air conditioning system, the air conditioning system includes indoor set and off-premises station, still includes: the first temperature sensor is arranged at an air inlet of an indoor unit of the air conditioner; the second temperature sensor is arranged on a middle coil of an evaporator of an indoor unit of the air conditioner; a third temperature sensor disposed on a condenser of an outdoor unit of an air conditioner; the internal machine mainboard is used for obtaining a target temperature TS set by a user; and the controller is connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the internal machine mainboard.
An air conditioning compressor operating frequency adjusting method, using the air conditioning system, wherein a controller of the air conditioning system stores a corresponding relationship between an outer loop temperature and an upper limit of an operating frequency of a compressor, and the method comprises the following steps:
step 1: starting an air conditioner and entering a heating mode;
step 2: the controller acquires an inner ring temperature TA, judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, executes the step 3, and otherwise, executes the step 4;
and step 3: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowed operation of the compressor to be higher than the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR;
and 4, step 4: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
Preferably, before performing step 3, the method further comprises:
the controller obtains the temperature TE of the middle coil of the evaporator, judges whether the temperature TE of the middle coil of the evaporator is smaller than or equal to a preset middle coil temperature threshold value or not, if yes, executes the step 3, and if not, executes the step 4.
Preferably, before performing step 3, the method further comprises:
and the controller acquires a target temperature TS set by a user, judges whether the value of TS minus TA is greater than or equal to a preset difference threshold value, if so, executes the step 3, and otherwise, executes the step 4.
The invention has the beneficial effects that: when the temperature of the inner ring is too low, the upper limit frequency of the operation allowed by the variable frequency air conditioner can be increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a prior art outer ring temperature-compressor operating frequency upper limit graph;
fig. 2 is a schematic flow chart of an operation frequency adjustment method for an air conditioner compressor according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an operation frequency adjustment method for an air conditioner compressor according to a second embodiment of the present invention;
fig. 4 is a schematic flow chart of an operation frequency adjustment method for an air conditioner compressor according to a third embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
An air conditioning system comprises an indoor unit, an outdoor unit and a first temperature sensor, wherein the first temperature sensor is arranged at an air inlet of the indoor unit of the air conditioner and is used for detecting indoor environment temperature, namely inner ring temperature TA; the air conditioning system also comprises a second temperature sensor, wherein the second temperature sensor is arranged on a middle coil of an evaporator of an indoor unit of the air conditioner and is used for detecting the temperature TE of the middle coil of the evaporator; the air conditioning system also comprises a third temperature sensor, wherein the third temperature sensor is arranged on a condenser of the outdoor unit of the air conditioner and is used for detecting the outdoor environment temperature, namely the outer ring temperature TR; air conditioning system still includes the interior machine mainboard, the target temperature TS that the user set for can be obtained to the interior machine mainboard, air conditioning system still includes the controller, the controller with first temperature sensor, second temperature sensor, third temperature sensor and interior machine mainboard connection for follow first temperature sensor, second temperature sensor and third temperature sensor acquire inner ring temperature TA, middle part coil pipe temperature TE, outer loop temperature TR to and obtain the target temperature TS that the user set for, and according to TA, TE, TR and TS value size, control air condition compressor's operating frequency.
In a first embodiment of the present invention, as shown in fig. 2, an air conditioning compressor operation frequency adjusting method, a controller of an air conditioning system stores a corresponding relationship between an outer loop temperature and a compressor operation frequency upper limit, that is, a corresponding relationship shown in a "graph of an outer loop temperature and a compressor operation frequency upper limit value" in fig. 1 in the prior art, includes the steps of:
s101: and starting the air conditioner and entering a heating mode.
S102: the controller obtains an inner ring temperature TA, and judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, S103 is executed, and if not, S104 is executed.
S103: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to a frequency higher than the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
Specifically, the upper limit frequency of the allowable operation of the compressor is set to be higher than the highest operation frequency of the compressor corresponding to the current outer ring temperature in the "outer ring temperature-compressor operation frequency upper limit value graph" in fig. 1. Further, when the outer ring temperature is less than or equal to the T5 value (T5 generally takes a value of 12-15 ℃) in fig. 1, the upper limit frequency of the allowable operation of the compressor is taken as the highest frequency F1 in the "outer ring temperature-compressor operation frequency upper limit value curve diagram" in the prior art shown in fig. 1, and further, the F1 takes a value of 100-120 Hz.
S104: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
Specifically, the maximum operating frequency of the compressor corresponding to the current outer ring temperature in the "outer ring temperature-compressor operating frequency upper limit value graph" in the prior art shown in fig. 1 is set.
As increasing the maximum operating frequency of the compressor may increase the temperature of the central coil of the evaporator, if the temperature of the central coil of the evaporator is higher, it is preferable that the maximum operating frequency of the compressor is not increased any more, so as to avoid the damage of the air conditioning system, and for the steps in the first embodiment, before performing step S103, the method may further include the steps of:
the controller obtains the temperature TE of the middle coil of the evaporator, judges whether the temperature TE of the middle coil of the evaporator is smaller than or equal to a preset middle coil temperature threshold value, if so, executes S103, and if not, executes S104.
In a second embodiment of the present invention, as shown in fig. 3, an air conditioner compressor operation frequency adjusting method includes the steps of:
s201: and starting the air conditioner and entering a heating mode.
S202: the controller acquires an inner ring temperature TA, and judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, S2021 is executed, and if not, S204 is executed.
S2021: the controller obtains the temperature TE of the middle coil of the evaporator, and judges whether the temperature TE of the middle coil of the evaporator is less than or equal to a preset middle coil temperature threshold value or not, if so, S203 is executed, and if not, S204 is executed.
S203: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to a frequency higher than the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
S204: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
In the third embodiment of the present invention, the controller further obtains a target temperature TS set by a user from the internal machine motherboard, and if the target temperature TS is different from the internal ring temperature TA obtained by the controller by a relatively large amount, it is necessary to increase the maximum operating frequency of the compressor so that the air conditioner can heat the room quickly, and if the target temperature TS is not different from the internal ring temperature TA obtained by the controller by a relatively large amount, the maximum operating frequency of the compressor can be controlled according to the "external ring temperature-compressor operating frequency upper limit value graph" shown in fig. 1.
As shown in fig. 4, an operation frequency adjusting method of an air conditioner compressor includes the steps of:
s301: and starting the air conditioner and entering a heating mode.
S302: the controller acquires an inner ring temperature TA, and judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, S3021 is executed, and if not, S304 is executed.
S3021: the controller obtains the temperature TE of the middle coil of the evaporator, and judges whether the temperature TE of the middle coil of the evaporator is smaller than or equal to a preset middle coil temperature threshold value or not, if so, S3022 is executed, and if not, S204 is executed.
S3022: the controller obtains a target temperature TS set by a user, judges whether the value of TS minus TA is larger than or equal to a preset difference threshold value, if yes, executes S303, and if not, executes S304.
S303: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to a frequency higher than the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
S304: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. The method for adjusting the running frequency of the air conditioner compressor is used for an air conditioning system, the air conditioning system comprises an indoor unit, an outdoor unit and a first temperature sensor, and the first temperature sensor is arranged at an air inlet of the indoor unit of the air conditioner; the second temperature sensor is arranged on a middle coil of an evaporator of an indoor unit of the air conditioner; a third temperature sensor disposed on a condenser of an outdoor unit of an air conditioner; the internal machine mainboard is used for obtaining a target temperature TS set by a user; the controller is connected with the first temperature sensor, the second temperature sensor, the third temperature sensor and the inner machine mainboard; the controller of the air conditioning system is stored with a corresponding relation between the outer ring temperature and the upper limit of the running frequency of the compressor, and the method is characterized by comprising the following steps:
step 1: starting an air conditioner and entering a heating mode;
step 2: the controller acquires inner ring temperature TA and judges that the inner ring temperature TA is
If not, executing the step 3, otherwise, executing the step 4;
and step 3: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowed operation of the compressor to be higher than the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR;
and 4, step 4: the controller acquires the outer ring temperature TR and sets the upper limit frequency of the allowable operation of the compressor to the frequency of the upper limit of the operation frequency of the compressor corresponding to the outer ring temperature TR.
2. The method according to claim 1, wherein the step 2 is:
step 21, the controller acquires an inner ring temperature TA, judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, executes step 22, and if not, executes step 4;
and step 22, the controller acquires the temperature TE of the middle coil of the evaporator, and judges whether the temperature TE of the middle coil of the evaporator is less than or equal to a preset middle coil temperature threshold value or not, if so, the step 3 is executed, and if not, the step 4 is executed.
3. The method according to claim 1, wherein the step 2 is:
step 21, the controller acquires an inner ring temperature TA, judges whether the inner ring temperature TA is less than or equal to a preset inner ring temperature threshold, if so, executes step 22, and if not, executes step 4;
step 22, the controller acquires the temperature TE of the middle coil of the evaporator, and judges whether the temperature TE of the middle coil of the evaporator is less than or equal to a preset middle coil temperature threshold value or not, if so, the step 23 is executed, and if not, the step 4 is executed;
and step 23, the controller acquires a target temperature TS set by a user, and judges whether the value of TS minus TA is greater than or equal to a preset difference threshold value, if so, step 3 is executed, and if not, step 4 is executed.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851337A (en) * | 2005-04-22 | 2006-10-25 | 海尔集团公司 | Domestic multi-connection air conditioner low temperature heating outdoor unit frequency control method |
| CN104374045A (en) * | 2014-10-24 | 2015-02-25 | 广东美的制冷设备有限公司 | Control method and control device of air conditioner and air conditioner |
| JP2015059691A (en) * | 2013-09-18 | 2015-03-30 | 三菱電機株式会社 | Air conditioner and air conditioning system |
| CN106247676A (en) * | 2016-08-16 | 2016-12-21 | 广东美的暖通设备有限公司 | The control method of air-conditioner, control device and air-conditioner |
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- 2017-05-18 CN CN201710352855.4A patent/CN108954699B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851337A (en) * | 2005-04-22 | 2006-10-25 | 海尔集团公司 | Domestic multi-connection air conditioner low temperature heating outdoor unit frequency control method |
| JP2015059691A (en) * | 2013-09-18 | 2015-03-30 | 三菱電機株式会社 | Air conditioner and air conditioning system |
| CN104374045A (en) * | 2014-10-24 | 2015-02-25 | 广东美的制冷设备有限公司 | Control method and control device of air conditioner and air conditioner |
| CN106247676A (en) * | 2016-08-16 | 2016-12-21 | 广东美的暖通设备有限公司 | The control method of air-conditioner, control device and air-conditioner |
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