CN109724205B - Method for installing temperature probe of electric heating pipe of air conditioner - Google Patents
Method for installing temperature probe of electric heating pipe of air conditioner Download PDFInfo
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- CN109724205B CN109724205B CN201811587673.6A CN201811587673A CN109724205B CN 109724205 B CN109724205 B CN 109724205B CN 201811587673 A CN201811587673 A CN 201811587673A CN 109724205 B CN109724205 B CN 109724205B
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Abstract
The invention provides a method for installing an electric heating pipe temperature probe of an air conditioner, wherein the method comprises the following steps: s1): presetting an initial installation position of an electric heating pipe temperature probe, and detecting a first temperature difference between the surface temperature of the electric heating pipe under different air flows and the temperature of the preset installation position of the electric heating pipe temperature probe; s2): keeping the initial installation position of the temperature probe of the electric heating pipe unchanged, and detecting a second temperature difference between the surface temperature under different powers and the temperature of the preset installation position; s3): judging whether the preset installation position is reasonable or not according to the first temperature difference and the second temperature difference, and if the preset installation position is judged to be reasonable, determining that the preset installation position is the position of the temperature probe of the electric heating pipe; if the preset installation position is not reasonable, adjusting the installation position of the electric heating pipe temperature probe, and repeating the steps S1) to S2) until the unit stops and disappears and the dry burning state of the unit reaches the minimum, and then judging that the installation position is reasonable.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for installing a temperature probe of an electric heating pipe of an air conditioner.
Background
When the air conditioner is manufactured, the electric heating pipe set is required to be installed in the air conditioner, and when the temperature of the air conditioner is required to be increased, the air in the air conditioner is heated by the electric heating pipe set and then blown out, so that the electric heating pipe set is one of important parts in the air conditioner. At present, when the electric heating pipe set is processed, the preparation process of the electric heating pipe set is very complex and tedious and the manufacturing efficiency is not high, the performance of the manufactured heating pipe set is only detected after the final finished product, and if the performance is poor, the heating pipe set needs to be disassembled again for recycling.
In addition, the temperature of the stainless steel electric heating pipe is monitored by an electric heating pipe temperature probe in the technical field of air conditioners at present, so that the on-off of the electric heating pipe is controlled. Further, when the stainless steel electric heating tube is used at present, the installation mode of the temperature probe of the electric heating tube is generally that the temperature probe is arranged behind the electric heating tube, and the on-off of the electric heating tube is controlled by detecting the air temperature behind the electric heating tube. The position of the temperature probe of the conventional electric heating pipe is mostly determined by an empirical value, and the temperature of the electric heating pipe determined by the method often cannot accurately reflect the real temperature. The temperature probe is connected with a normally closed switch in series, when the temperature of the probe is detected to be higher than 85 ℃, the normally closed switch is switched off, and when the temperature of the probe is detected to be higher than 110 ℃, the fuse fusing unit is shut down. The common production and installation are fixed distances, the temperature difference is too small when the distance is too close, so that the switch is frequently started and stopped, the temperature difference is too large when the distance is too far, the temperature of the heating pipe cannot be correctly reflected, the detection deviation of the temperature probe is too large, the electric heating pipe is extremely easy to dry, a unit is fired when the unit is serious, and the loss which is difficult to recover is caused.
Aiming at the defects of the prior art, a new method for installing the temperature probe of the electric heating pipe of the air conditioner is required.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to overcome the defects in the prior art and achieve the effects of reasonably setting the installation position of the temperature probe of the electric heating pipe, reducing dry burning and fire ignition of the electric heating pipe, improving the service efficiency of the electric heating pipe and prolonging the service life of the electric heating pipe.
In order to achieve the above object, the present invention provides a method for installing an electric heating tube temperature probe of an air conditioner, wherein the method for installing an electric heating tube temperature probe of an air conditioner comprises the steps of:
s1): presetting an initial installation position of an electric heating pipe temperature probe, and detecting a first temperature difference between the surface temperature of an electric heating pipe under different air flows and the temperature of the preset installation position of the electric heating pipe temperature probe;
s2): keeping the initial installation position of the temperature probe of the electric heating pipe unchanged, and detecting a second temperature difference between the surface temperature under different powers and the temperature of the preset installation position;
s3): judging whether the preset installation position is reasonable or not according to the first temperature difference and the second temperature difference, and if the preset installation position is judged to be reasonable, determining that the preset installation position is the position of the electric heating pipe temperature probe; if the preset installation position is not reasonable, adjusting the installation position of the electric heating pipe temperature probe, and repeating the steps S1) to S2) until the unit stops and disappears and the dry burning state of the unit reaches the minimum, and then judging that the installation position is reasonable.
The method for installing the electric heating pipe temperature probe of the air conditioner as described above, wherein in step S1), a first relation curve between the air volume and the first temperature difference is drawn according to the first temperature difference at different detected air volumes.
The method for installing the electric heating pipe temperature probe of the air conditioner as described above, wherein in step S2), a second relation curve between the power and the second temperature difference is plotted according to the detected second temperature difference at different powers.
The method of installing an electric-heating-pipe temperature probe of an air conditioner as described above, wherein, in step S1), there is further a step between presetting an initial installation position of the electric-heating-pipe temperature probe and detecting a first temperature difference at different air volumes:
and measuring the temperature difference between the surface temperature of the electric heating pipe and the temperature of the installation position of the temperature probe of the electric heating pipe by the nominal air quantity.
The method for installing the electric heating pipe temperature probe of the air conditioner is characterized in that the nominal air volume is the dry air volume in the standard air supply mode measured under the conditions of rated voltage, rated frequency, 20-degree ambient dry bulb temperature and 15-degree wet bulb temperature.
The method of installing an electric heating pipe temperature probe for an air conditioner as described above, wherein the first temperature difference is measured in case of gradually decreasing the air volume from the nominal air volume in step S1), respectively.
The method for installing the temperature probe of the electric heating pipe of the air conditioner as described above, wherein the second temperature difference is measured in the case of gradually decreasing power from the rated power in step S2).
In the method for installing the electric heating pipe temperature probe of the air conditioner, in step S3), if the first temperature difference decreases as the wind amount gradually decreases and the second temperature difference decreases as the power gradually decreases, it is determined that the preset installation position is reasonable.
The method for installing the electric heating pipe temperature probe of the air conditioner as described above, wherein, in step S3), in the process of adjusting the installation position of the electric heating pipe temperature probe, if the unit jump stops less, the electric heating pipe temperature probe is adjusted to be away from the electric heating pipe.
The method for installing the electric heating pipe temperature probe of the air conditioner as described above, wherein, in step S3), in the process of adjusting the installation position of the electric heating pipe temperature probe, if the unit is dry-burned, the electric heating pipe temperature probe is adjusted to be close to the electric heating pipe.
According to the method for installing the electric heating pipe temperature probe of the air conditioner, the installation position of the electric heating pipe temperature probe is reasonably set by controlling the difference value of the surface temperature of the electric heating pipe and the temperature at the installation position fed back by the electric heating pipe temperature probe according to the heating quantity (namely the power quantity) and the wind quantity, so that the reasonable installation position of the electric heating pipe probe is realized, the dry burning ignition of the stainless steel electric heating pipe is reduced, the use efficiency of the electric heating pipe is improved, and the service life of the electric heating pipe is prolonged.
Drawings
In order to more clearly illustrate the embodiments or the prior art solutions of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic view illustrating a method of installing an electric heating pipe temperature probe for an air conditioner according to the present invention; and
fig. 2 is a flowchart illustrating a method of installing an electric heating pipe temperature probe of an air conditioner according to an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and completely with reference to the following embodiments and accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 and 2 are a schematic view of a method of installing an electric heating pipe temperature probe for an air conditioner and a flowchart of a method of installing an electric heating pipe temperature probe for an air conditioner according to an embodiment of the present invention, respectively.
As shown in fig. 1, the method for installing an electric heating pipe temperature probe of an air conditioner of the present invention includes the steps of:
s1): presetting an initial installation position of an electric heating pipe temperature probe, and detecting a first temperature difference between the surface temperature of an electric heating pipe under different air flows and the temperature of the preset installation position of the electric heating pipe temperature probe;
s2): keeping the initial installation position of the temperature probe of the electric heating pipe unchanged, and detecting a second temperature difference between the surface temperature under different powers and the temperature of the preset installation position;
s3): judging whether the preset installation position is reasonable or not according to the first temperature difference and the second temperature difference, and if the preset installation position is judged to be reasonable, determining that the preset installation position is the position of the electric heating pipe temperature probe; if the preset installation position is not reasonable, adjusting the installation position of the electric heating pipe temperature probe, and repeating the steps S1) to S2) until the unit stops and disappears and the dry burning state of the unit reaches the minimum, and then judging that the installation position is reasonable.
The invention discloses a method for installing an electric heating pipe temperature probe of an air conditioner, and mainly aims to establish a method for determining an installation position according to the heating quantity and the air quantity when a stainless steel electric heating pipe in the air conditioner is used, so that dry burning and fire of the stainless steel electric heating pipe are reduced, the use efficiency of the electric heating pipe is improved, and the service life of the electric heating pipe is prolonged.
The stainless steel electric heating tube uses a stainless steel tube as a shell, spiral electric heating alloy wires (nickel-chromium alloy and iron-chromium alloy) are uniformly distributed along the axial direction of the center in the tube, the gap of the electric heating alloy wires is filled and compacted with magnesia sand with good insulation and heat conductivity, and the two ends of the tube opening are sealed by ceramics. The stainless steel electric heating tube is an electric element special for converting electric energy into heat energy, and is widely used on air conditioners due to high heat efficiency, convenient use, simple installation and no pollution.
When the existing stainless steel electric heating pipe is used, the temperature probe of the electric heating pipe is generally arranged behind the electric heating pipe in an installation mode, and the on-off of the electric heating pipe is controlled by detecting the air temperature behind the electric heating pipe. The position of the temperature probe of the conventional electric heating pipe is mostly determined by empirical values, and the temperature of the electric heater determined by the method often cannot accurately reflect the real temperature. The temperature probe is connected with a normally closed switch in series, when the temperature of the probe is detected to be higher than 85 ℃, the normally closed switch is switched off, and when the temperature of the probe is detected to be higher than 110 ℃, the fuse fusing unit is shut down. The common production and installation are fixed distances, the temperature difference is too small when the distance is too close, so that the switch is frequently started and stopped, the temperature difference is too large when the distance is too far, the temperature of the heating pipe cannot be correctly reflected, the detection deviation of the temperature probe is too large, the electric heating pipe is extremely easy to dry, a unit is fired when the unit is serious, and the loss which is difficult to recover is caused. The method for installing the electric heating pipe temperature probe of the air conditioner reasonably sets the installation position of the electric heating pipe temperature probe by controlling the difference value of the surface temperature of the electric heating pipe and the temperature of the temperature probe according to the heating quantity and the air quantity, thereby overcoming the defects in the prior art and prolonging the service life of the electric heating pipe.
Further, in step S1), a first relation curve between the air volume and the first temperature difference is plotted according to the detected first temperature difference at different air volumes, and the relation between the air volume at the initial installation position of the electric-heating-tube temperature probe and the first temperature difference can be determined according to the first relation curve.
In a specific embodiment, in step S1), there is the following step between presetting the initial installation position of the electric heating tube temperature probe and detecting the first temperature difference under different air volumes: and measuring the temperature difference between the surface temperature of the electric heating pipe and the temperature of the installation position of the temperature probe of the electric heating pipe by the nominal air quantity. In this embodiment, the nominal air volume is the dry air volume in the standard air supply mode measured under the conditions of the rated voltage, the rated frequency, the ambient dry-bulb temperature of 20 degrees and the wet-bulb temperature of 15 degrees.
In a specific embodiment, in step S1), the first temperature differences are measured in case of gradually decreasing the air volume from the nominal air volume, respectively. It is needless to say that the relationship between the air volume and the first temperature difference may be theoretically detected by gradually increasing the air volume at the nominal air volume, but in consideration of the lifetime of the unit, in the present embodiment, it is preferable to measure the first temperature difference when the air volume is gradually decreased from the nominal air volume, and to examine the relationship between the first temperature difference and the decrease in the air volume by plotting a first relationship line (curve or straight line) between the air volume and the first temperature difference from the measurement data between the different air volumes and the corresponding first temperature differences.
Further, in step S2), a second relation curve between the power and the second temperature difference is plotted according to the detected second temperature difference at different powers, and the relation between the power and the second temperature difference at the initial installation position of the electric heating pipe temperature probe can be determined according to the second relation curve.
In a specific embodiment, in step S2), the second temperature differences are measured in the case of a gradual reduction in power from the rated power, respectively. Theoretically, it is of course possible to detect the relationship between the power and the second temperature difference by gradually increasing the power at the rated power, but considering the lifetime of the unit, in this embodiment, it is preferable to measure the second temperature difference when the power is gradually decreased from the rated power, and to study the relationship between the second temperature difference and the power decrease by plotting a second relationship line (curve or straight line) between the power and the second temperature difference based on the measurement data between different powers and the corresponding second temperature differences.
Further, in step S3), if the first temperature difference decreases as the wind amount gradually decreases and the second temperature difference decreases as the power gradually decreases, it is determined that the preset installation position is reasonable.
Further, in step S3), in the process of adjusting the installation position of the electric heating tube temperature probe, if the unit jump stops less, the electric heating tube temperature probe is adjusted to be away from the electric heating tube.
Further, in step S3), in the process of adjusting the installation position of the electric-heating-tube temperature probe, if the unit is dry-burned, the electric-heating-tube temperature probe is adjusted to be close to the electric heating tube.
According to the method for installing the electric heating pipe temperature probe of the air conditioner, the installation position of the electric heating pipe temperature probe is reasonably set by controlling the difference value of the surface temperature of the electric heating pipe and the temperature at the installation position fed back by the electric heating pipe temperature probe according to the heating quantity (namely the power quantity) and the wind quantity, so that the reasonable installation position of the electric heating pipe probe is realized, the dry burning ignition of the stainless steel electric heating pipe is reduced, the use efficiency of the electric heating pipe is improved, and the service life of the electric heating pipe is prolonged.
An embodiment of the present invention will be described below with reference to fig. 2 so that those skilled in the art can more clearly understand the present invention.
Specifically, as shown in fig. 2, first, an initial installation position of the electric-heating-tube temperature probe is preset (that is, the installation position of the electric-heating-tube temperature probe may be preset according to existing experience, and may also be referred to as an original position of the electric-heating-tube temperature probe), then the surface temperature of the electric heating tube and the feedback temperature of the temperature probe are measured with a nominal air volume, and a difference between the surface temperature and the feedback temperature is calculated according to the surface temperature and the feedback temperature. And then changing the air volume (for example, gradually reducing the air volume from the famous air volume), detecting the surface temperature of the electric heating tube and the temperature of the installation position of the temperature probe of the heating tube displayed by the temperature probe, calculating the temperature difference (which can also be a first temperature difference) between the surface temperature of the electric heating tube and the installation position of the temperature probe of the heating tube according to the surface temperature of the electric heating tube and the installation position temperature of the temperature probe of the heating tube displayed by the temperature probe of the electric heating tube, drawing a point and a line according to the different air volumes and the corresponding temperature differences, thereby obtaining a first relation curve, and obtaining the relation between the temperature difference and the different air volumes (for.
Secondly, fixing the installation position of the temperature probe of the electric heating pipe unchanged (namely keeping the temperature probe of the electric heating pipe at the initial installation position), changing the power (for example, the power is gradually reduced from the rated power), detecting the surface temperature of the electric heating pipe and the display temperature of the temperature probe of the electric heating pipe, displaying the installation position temperature of the temperature probe of the heating pipe according to the surface temperature of the electric heating pipe and the display temperature of the temperature probe of the electric heating pipe, calculating the temperature difference between the surface temperature of the electric heating pipe and the display temperature of the temperature probe of the electric heating pipe, also called as a second temperature difference, drawing a line according to the different powers and the corresponding temperature differences, thereby obtaining a second relation curve, and obtaining the relation between the temperature difference and the different powers (for example, the power is.
Thirdly, judging whether the position of the original heating pipe temperature probe is reasonable or not according to the drawn lines of the drawing points obtained in the steps 1 and 2 (namely the first relation curve in the step 1 and the second relation curve in the step 2); and (3) if the temperature difference between the measured temperature of the electric heating pipe obtained in the step (1) and the temperature displayed by the temperature probe is smaller and smaller along with the gradual reduction of the power and the air volume, judging that the position of the temperature probe of the electric heating pipe is reasonable. Otherwise, the position of the temperature probe of the electric heating pipe is not reasonable.
And if the position of the electric heating tube temperature probe is judged to be unreasonable, executing the following fourth and fifth steps (which can also be called as step 4 and step 5).
Fourthly, adjusting the installation position of the temperature probe of the electric heating pipe, if the unit jumps and stops less in the process of adjusting the installation position of the temperature probe of the electric heating pipe, adjusting the remote position again (namely, adjusting the temperature probe of the electric heating pipe to be far away from the electric heating pipe), and further, if the unit burns dry in the process of adjusting the installation position of the temperature probe of the electric heating pipe, adjusting the position again (namely, adjusting the temperature probe of the electric heating pipe to be close to the electric heating pipe). Preferably, in this adjustment process, the above steps 1 to 3 are repeated again to further detect the relationship between the above temperature difference and the air volume and power change, respectively.
And fifthly, the step 4 is circulated again (namely, the step 4 is continuously carried out) until the unit stops and disappears, the dry-burning state reaches the minimum, the distance is the optimal distance at the moment, and the installation position of the temperature probe of the electric heating pipe is the optimal installation position at the moment.
The invention mainly aims to establish a method for determining the installation position of a stainless steel electric heating pipe in an air conditioner according to the heating quantity and the air quantity when the stainless steel electric heating pipe is used, so that dry burning and fire of the stainless steel electric heating pipe are reduced, the use efficiency of the electric heating pipe is improved, and the service life of the electric heating pipe is prolonged.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A method for installing an electric heating pipe temperature probe of an air conditioner, comprising the steps of:
s1): presetting an initial installation position of an electric heating pipe temperature probe, and detecting a first temperature difference between the surface temperature of an electric heating pipe under different air flows and the temperature of the preset installation position of the electric heating pipe temperature probe;
s2): keeping the initial installation position of the temperature probe of the electric heating pipe unchanged, and detecting a second temperature difference between the surface temperature under different powers and the temperature of the preset installation position;
s3): judging whether the preset installation position is reasonable or not according to the first temperature difference and the second temperature difference, and if the preset installation position is judged to be reasonable, determining that the preset installation position is the position of the electric heating pipe temperature probe; if the preset installation position is not reasonable, adjusting the installation position of the electric heating pipe temperature probe, and repeating the steps S1) to S2) until the unit stops and disappears and the dry burning state of the unit reaches the minimum, and then judging that the installation position is reasonable;
wherein, in step S1), the first temperature differences are respectively measured in the case of gradually decreasing the air volume from the nominal air volume;
in step S2), the second temperature differences are measured in each case with a gradual reduction in power from the rated power;
in step S3), if the first temperature difference decreases as the wind amount gradually decreases and the second temperature difference decreases as the power gradually decreases, it is determined that the preset installation position is reasonable.
2. The method of installing an electric-heating-pipe temperature probe of an air conditioner according to claim 1, wherein in step S1), a first relationship curve between the air volume and the first temperature difference is plotted according to the detected first temperature difference at different air volumes.
3. The method of installing an electric heating pipe temperature probe for an air conditioner according to claim 2, wherein in step S2), a second relation curve between the power and the second temperature difference is plotted according to the detected second temperature difference at different powers.
4. The method of installing an electric-heating-pipe temperature probe of an air conditioner according to claim 1, wherein in step S1), there is further a step between presetting an initial installation position of the electric-heating-pipe temperature probe and detecting a first temperature difference at different air volumes:
and measuring the temperature difference between the surface temperature of the electric heating pipe and the temperature of the installation position of the temperature probe of the electric heating pipe by the nominal air quantity.
5. The method for installing an electric heating pipe temperature probe of an air conditioner according to claim 4, wherein the nominal air volume is a dry air volume in a standard blowing mode measured at a rated voltage, a rated frequency, an ambient dry bulb temperature of 20 degrees, and a wet bulb temperature of 15 degrees.
6. The method of installing an electric-heating-tube temperature probe of an air conditioner according to claim 1, wherein in step S3), if the unit trip is reduced during the adjustment of the installation position of the electric-heating-tube temperature probe, the electric-heating-tube temperature probe is adjusted to be away from the electric heating tube.
7. The method of installing an electric-heating-tube temperature probe of an air conditioner according to claim 6, wherein, in the step S3), if dry-fire occurs in the unit during adjustment of the installation position of the electric-heating-tube temperature probe, the electric-heating-tube temperature probe is adjusted to be close to the electric heating tube.
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| CN109724205A (en) | 2019-05-07 |
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