CN202955795U - Air handling unit - Google Patents
Air handling unit Download PDFInfo
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- CN202955795U CN202955795U CN201220573118XU CN201220573118U CN202955795U CN 202955795 U CN202955795 U CN 202955795U CN 201220573118X U CN201220573118X U CN 201220573118XU CN 201220573118 U CN201220573118 U CN 201220573118U CN 202955795 U CN202955795 U CN 202955795U
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Abstract
The utility model relates to the technical field of air purification, in particular to an air handling unit used for increasing adsorption efficiency of chemical filters. The air handling unit comprises a unit case, two chemical filters, a fan and a dry surface cooler, wherein the unit case is provided with an air inlet and an air outlet and the chemical filters, the fan and the dry surface cooler are sequentially disposed in the unit case along air flow direction from the air inlet to the air outlet. One chemical filter is provided with an activated carbon adsorbent layer for adsorbing volatile organics. The other chemical filter is provided with an alkaline adsorbent layer for adsorbing acidic gases and an acid adsorbent layer for adsorbing alkali gases. The fan of the air handling unit allows the thicker adsorbent layers for the chemical filters, each chemical filter can be targeted to adsorb chemical pollutants in air, adsorption efficiency of the chemical filters are increased, and the effect of the air handling unit in handling the chemical pollutants in air is improved.
Description
Technical Field
The utility model relates to an air purification technical field, in particular to air treatment unit.
Background
In a precision manufacturing production workshop, due to high requirements on product precision, in order to reduce the influence of environmental factors on product quality, the temperature and humidity, cleanliness and chemical pollutant content of air in the production workshop need to be controlled within a certain range. At present, a clean room air circulation system is generally adopted in a production workshop to control the temperature, humidity, cleanliness and chemical pollutant content of air in the production workshop; clean room air circulation systems generally comprise: fan filter units, raised floors, dry surface coolers, etc.; the fan filter unit comprises a fan and a high-efficiency air filter, and is usually matched with a chemical filter for use so as to control the cleanliness and the content of chemical pollutants in the air in a production workshop; the fan filter unit is usually arranged on a suspended ceiling of a production workshop and is used for performing circulating filtration treatment on dust particles in the air in the production workshop to achieve the purpose of controlling the cleanliness of the air in the production workshop; the chemical filter is arranged at the air inlet of the fan filter unit and used for removing some harmful chemical substances in indoor air, so that the aim of controlling the content of chemical pollutants in the air in a production workshop is fulfilled.
However, the existing fan filter unit is usually installed on the ceiling of a production workshop, and simultaneously, the requirement of noise in the production workshop is also met, so the existing fan filter unit can only provide extra-machine residual pressure of about 90Pa, and after the resistance of a dry surface cooler in a clean room air circulation system and the resistance of an elevated floor are overcome, the available pressure provided for a chemical filter is very low, so that the chemical filter can only adopt a relatively thin adsorbent layer, and the efficiency of the chemical filter for adsorbing chemical pollutants in air is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air treatment unit for improve chemical filter's adsorption efficiency, thereby improve the effect of air treatment unit chemical pollutants in the process air.
In order to achieve the above object, the utility model provides a following technical scheme:
an air handling unit comprising: the air conditioner comprises a unit shell with an air inlet and an air outlet, and two chemical filters, a fan and a dry surface air cooler which are sequentially arranged in the unit shell along the flow direction of air flow from the air inlet to the air outlet; and one of the chemical filters is provided with an active carbon adsorbent layer for adsorbing volatile organic compounds, and the other chemical filter is provided with an alkaline adsorbent layer for adsorbing acid gas or an acidic adsorbent layer for adsorbing alkaline gas.
Preferably, the air handling unit further includes a high-efficiency and medium-efficiency filter disposed in the unit housing and adjacent to the chemical filter, and the high-efficiency and medium-efficiency filter is located downstream of the chemical filter through which the air flowing from the air inlet to the air outlet flows.
Preferably, in the air treatment unit, the unit housing is provided with a plurality of access doors.
Preferably, the air handling unit further comprises a sound absorbing material disposed on the inner wall of the casing of the fan section and/or the air outlet section.
Preferably, in the air handling unit, the fan is a volute-free direct-connection fan.
In the air treatment unit provided by the utility model, the fan sucks the air in the production workshop into the air treatment unit, and one of the chemical filters has the activated carbon adsorbent layer for adsorbing volatile organic compounds, so that the chemical filter can adsorb the volatile organic compounds contained in the air; the other chemical filter can adsorb acid gas or alkaline gas in the air because the chemical filter is provided with an alkaline adsorbent layer for adsorbing acid gas or an acidic adsorbent layer for adsorbing alkaline gas; the utility model provides an air treatment unit can carry out dry cooling to the air in the workshop and handle, can have corresponding absorption some harmful chemicals in the air in the workshop again. Consequently, because of the pressure that fan filter unit provided chemical filter is little among the prior art, the adsorbent layer thickness that leads to chemical filter to adopt is thin to be compared, the utility model provides an air treatment unit because of installing fan, chemical filter and dry surface cooler in same unit, air treatment unit is from taking the fan promptly, makes chemical filter can adopt thicker adsorbent layer, and each chemical filter can all have corresponding chemical pollutants in the adsorbed air to improve chemical filter's adsorption efficiency, and then improved the effect that air treatment unit handled chemical pollutants in the air.
Drawings
Fig. 1 is a schematic structural diagram of an air handling unit according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an air handling unit according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of an air handling unit according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air handling unit according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of an air handling unit according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of an air handling unit according to a fourth embodiment of the present invention.
Reference numerals:
10-unit housing 20-dry surface air cooler 30, 31, 32-chemical filter
40-blower 50-high and medium efficiency filter 60, 61, 62, 63-access door
70-sound absorbing material.
Detailed Description
At present, generally adopt clean room air circulating system to control the humiture, cleanliness factor and the chemical contamination content of air in the workshop, clean room air circulating system generally includes: fan filter units, raised floors, dry surface coolers, etc.; the fan filter unit comprises a fan and a high-efficiency air filter, and is usually matched with a chemical filter for use so as to control the cleanliness and the content of chemical pollutants in the air in a production workshop; however, because the fan filter unit is usually installed on the ceiling of a production workshop and simultaneously the noise requirement in the production workshop is also met, the extra-external pressure provided by the fan filter unit is only about 90Pa generally, and after the resistance of a dry surface cooler and an elevated floor in a clean room air circulation system is overcome, the available pressure provided for the chemical filter is very small, so that the thickness of an adsorbent layer in the chemical filter is relatively thin, the service life of the chemical filter is relatively short, the continuous working time of the fan filter unit is influenced, and the production continuity of the production workshop is not facilitated.
In view of this, the utility model provides an air treatment unit, include: the air conditioner comprises a unit shell with an air inlet and an air outlet, and a fan, at least one dry surface air cooler and at least one chemical filter which are arranged in the unit shell. The utility model discloses in, fan, chemical filter and dry surface cooler are installed in same unit casing, and the air treatment unit is from taking the fan promptly, and the pressure that makes the fan provide chemical filter no longer receives the restriction of outer excess pressure for chemical filter can adopt thicker adsorbent layer, has prolonged chemical filter's life, and air treatment unit also can adopt a plurality of chemical filter certainly, thereby has improved the time of air treatment unit continuous operation, and can the temperature in the simultaneous control workshop.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings.
First embodiment, as shown in fig. 1, an air handling unit according to a first embodiment of the present invention includes: the air conditioner comprises a unit shell 10 with an air inlet and an air outlet, a fan 40 arranged in the unit shell 10, a dry surface air cooler 20 and a chemical filter 30; wherein,
the dry surface air cooler 20, the chemical filter 30 and the fan 40 are sequentially arranged along the flow direction of the air flow from the air inlet to the air outlet.
In this embodiment, dry surface air cooler 20, chemical filter 30 and fan 40 are installed in same unit casing 10 in proper order, and the air treatment unit is from taking the fan for chemical filter 30 can adopt the thicker adsorbent layer, thereby has prolonged chemical filter's life, and then has improved the time of air treatment unit continuous operation, and can the while control the temperature in the workshop.
Preferably, the adsorbent layer of the chemical filter 30 is any one or a combination of the following: the active carbon adsorbent layer adsorbs volatile organic compounds, the alkaline adsorbent layer adsorbs acidic gases, and the acidic adsorbent layer adsorbs alkaline gases. That is, the adsorbent layer in the chemical filter 30 may be one of three kinds of adsorbent layers, i.e., an activated carbon adsorbent layer that adsorbs volatile organic compounds, a basic adsorbent layer that adsorbs acidic gases, and an acidic adsorbent layer that adsorbs basic gases, or a combination of the three kinds of adsorbent layers.
In the present embodiment, the size of the windward side of the chemical filter 30 is 600x600mm, the depth is 400 to 500mm, 8 600x (400 to 500) x (30 to 50) mm plate-type activated carbon adsorbent layers are arranged inside the chemical filter 30, and the 8 plate-type activated carbon adsorbent layers are arranged in a "W" or "V" shape inside the chemical filter 30; the outline structure of the chemical filter in the following examples is the same as that of the present example. Of course, the chemical filter 30 may take other configurations, as will be appreciated by those skilled in the art, and will not be described in detail herein.
The air handling unit is generally arranged on a lower interlayer of a clean room and is close to the air return vertical shaft, and the air handling unit is used for treating the air in a production workshop: firstly, sucking indoor air into a unit shell 10, then cooling the sucked air by a dry surface air cooler 20, carrying out adsorption treatment on the sucked air by a chemical filter 30, and finally pressurizing by a fan 40 to send out the treated air; more specifically, as indicated by the arrow in fig. 1, air in the production workshop enters the unit housing 10 from the air inlet of the unit housing 10 under the pressure generated by the fan 40, the sucked air is first dry-cooled by the dry surface air cooler 20, then some harmful chemicals contained in the air are removed by the chemical filter 30, and finally the treated air is sent out from the air outlet of the unit housing 10 and returned to the production workshop. Install in same unit housing 10 because of fan 40, chemical filter 30 and dry surface cooler 20, the air treatment unit is from taking the fan promptly for chemical filter 30 can adopt thicker adsorbent layer, consequently, compare with prior art, under the air condition of handling same workshop, uses the embodiment of the utility model provides an air treatment unit, because of chemical filter 30 has thicker adsorbent layer, has increased the saturation time of adsorbent layer, has prolonged chemical filter 30's life promptly, thereby has improved the time of air treatment unit continuous operation, and can the temperature in the simultaneous control workshop.
It should be noted that the air handling unit provided in the first embodiment is suitable for use in a production workshop where the concentration of chemical contaminants is less than or equal to 1.5mg/m by using a chemical filter 30 for filtration3In the case of (1).
In the first embodiment, the dry surface air cooler 20, the chemical filter 30 and the blower 40 are sequentially arranged in the unit housing 10; but not limited thereto, the dry surface air cooler 20, the chemical filter 30 and the blower 40 may also be arranged in sequence as required; for example, to reduce the noise of the air handling unit, a fan 40 is disposed between the dry surface cooler 20 and the chemical filter 30.
Embodiment two, as shown in fig. 2, the air handling unit provided by embodiment two of the present invention includes: the air conditioner comprises a unit shell 10 with an air inlet and an air outlet, a fan 40 arranged in the unit shell 10, a dry surface air cooler 20 and two chemical filters 30 and 31; wherein,
the dry surface air cooler 20, the chemical filter 30, the chemical filter 31 and the fan 40 are sequentially arranged along the airflow direction from the air inlet to the air outlet.
In this embodiment, the dry surface air cooler 20, the chemical filter 30, the chemical filter 31 and the fan 40 are installed in the same unit housing 10, that is, the air handling unit is provided with a fan, so that the air handling unit can adopt two chemical filters, and each chemical filter can adopt a thicker adsorbent layer, thereby increasing the saturation time of the adsorbent layers, prolonging the service life of the chemical filters, and further increasing the continuous working time of the air handling unit. And compared with the first embodiment, a chemical filter 31 is added, so that the efficiency of the air treatment unit for treating harmful substances in the air can be improved, and the continuous working time of the air treatment unit can be further increased.
The air processing unit processes the air in the production workshop as follows: firstly, sucking indoor air into a unit shell 10, then cooling the sucked air by a dry surface air cooler 20, respectively performing adsorption treatment on the sucked air by a chemical filter 30 and a chemical filter 31, and finally pressurizing by a fan 40 to send out the treated air; more specifically, as indicated by the arrow in fig. 2, air in the production room enters the unit housing 10 from the air inlet of the unit housing 10 under the pressure generated by the fan 40, the sucked air is first dry-cooled by the dry surface air cooler 20, then some harmful substances contained in the air are removed by the first chemical filter 30 and the second chemical filter 31, and finally the treated air is sent out from the air outlet of the unit housing 10 and returned to the production room. Because the fan 40, the chemical filter 30, the chemical filter 31 and the dry surface air cooler 20 are arranged in the same unit shell 10, namely the air handling unit is provided with the fan, the air handling unit can adopt two chemical filters, and the chemical filter 30 and the chemical filter 31 can adopt thicker adsorbent layers; therefore, compare with prior art, under the air condition of handling same workshop, use the utility model discloses the air treatment unit that embodiment two provided, because of adopting two chemical filter to adsorb, and each chemical filter can adopt the thick adsorbent layer, increased the saturation time of adsorbent layer, prolonged chemical filter 30 and chemical filter 31's life to improve the time of air treatment unit continuous operation, and can the simultaneous control temperature in the workshop.
In the second embodiment, the dry surface air cooler 20, the chemical filter 30, the chemical filter 31 and the fan 40 are sequentially arranged in the same unit housing 10, but the invention is not limited thereto, and the arrangement order of the dry surface air cooler 20, the chemical filter 30, the chemical filter 31 and the fan 40 may have other combination forms; for example: as shown in fig. 3, the chemical filter 30, the chemical filter 31, the dry surface air cooler 20 and the fan 40 are sequentially arranged in the unit housing 10 along the flow direction of the air flow from the air inlet to the air outlet; alternatively, as shown in fig. 4, the chemical filter 30, the chemical filter 31, the fan 40 and the dry surface air cooler 20 are sequentially disposed in the unit case 10 along the flow direction of the air flow from the air inlet to the air outlet.
It is worth mentioning that the air handling unit provided by the second embodiment adopts two chemical filters for filtering, so that the air handling unit is suitable for the production workshop with the concentration of chemical pollutants less than or equal to 3.0mg/m3In the case of (1).
Third embodiment, as shown in fig. 5, the air handling unit provided by the third embodiment of the present invention includes: the air conditioner comprises a unit shell 10 with an air inlet and an air outlet, a fan 40 arranged in the unit shell 10, a dry surface air cooler 20, and three chemical filters 30, 31 and 32; wherein,
the dry surface air cooler 20, the chemical filter 30, the chemical filter 31, the fan 40 and the chemical filter 32 are sequentially arranged in the unit housing 10 along the airflow direction from the air inlet to the air outlet.
In this embodiment, the dry surface air cooler 20, the chemical filter 30, the chemical filter 31, the fan 40 and the chemical filter 32 are sequentially disposed in the same unit housing 10, that is, the air handling unit is provided with a fan, so that the air handling unit can adopt three chemical filters, and each chemical filter can adopt a thicker adsorbent layer, thereby increasing the saturation time of the adsorbent layer, prolonging the service life of the chemical filters, and increasing the continuous working time of the air handling unit. Compared with the embodiment, the chemical filter 32 is added, so that the efficiency of the air treatment unit for treating harmful substances in the air can be improved, and the continuous working time of the air treatment unit is further prolonged.
The air processing unit processes the air in the production workshop as follows: firstly, sucking indoor air into a unit shell 10, then cooling the sucked air by a dry surface air cooler 20, respectively carrying out adsorption treatment on the sucked air by a chemical filter 30 and a chemical filter 31, then pressurizing the sucked air by a fan 40, further carrying out adsorption treatment on the sucked air by a chemical filter 32, and finally sending out the treated air; more specifically, as indicated by the arrow in fig. 5, the air in the production workshop enters the unit housing 10 from the air inlet of the unit housing 10 under the pressure generated by the fan 40, the temperature of the sucked air is first reduced by the dry surface air cooler 20, then the harmful substances contained in the air are removed by the first chemical filter 30, the second chemical filter 31 and the chemical filter 32, and finally the treated air is sent out from the air outlet of the unit housing 10 and returned to the production workshop. Because the fan 40, the chemical filter 30, the chemical filter 31, the chemical filter 32 and the dry surface air cooler 20 are arranged in the same unit shell 10, namely the air handling unit is provided with the fan, the air handling unit can adopt three chemical filters, and the chemical filter 30, the chemical filter 31 and the chemical filter 32 can adopt thicker adsorbent layers; therefore, compared with the prior art, under the condition of treating the air in the same production workshop, the air treatment unit provided by the third embodiment is used, and because three chemical filters are adopted for filtering, and each chemical filter can adopt a thicker adsorbent layer, the saturation time of the adsorbent layers is increased, namely the service life of the chemical filters is prolonged, so that the continuous working time of the air treatment unit is prolonged, and the temperature in the production workshop can be controlled simultaneously.
In the third embodiment, the dry surface air cooler 20, the chemical filter 30, the chemical filter 31, the fan 40 and the chemical filter 32 are sequentially arranged in the same unit housing 10; but not limited thereto, the arrangement order of the dry surface cooler 20, the chemical filter 30, the chemical filter 31, the fan 40 and the chemical filter 32 may have other forms, i.e. different arrangement combinations may be required, for example: the dry surface air cooler 20, the chemical filter 30, the blower 40, the chemical filter 31 and the chemical filter 32 are sequentially arranged in the same unit housing 10, and the arrangement does not affect the performance of the air handling unit.
It is worth mentioning that the air handling unit provided in the third embodiment adopts three chemical filters, so that the air handling unit is suitable for the production workshop with the chemical pollutant concentration less than or equal to 4.5mg/m3In the case of (1).
Embodiment four, the utility model further provides an air treatment unit can reduce air treatment unit area occupied.
As shown in fig. 6, the air handling unit includes: the air conditioner comprises a unit shell 10 with an air inlet and an air outlet, a fan 40 arranged in the unit shell 10, two dry surface air coolers 20 and two chemical filters 30 and 31; wherein,
the chemical filter 30, the chemical filter 31, the fan 40 and the dry surface air cooler 20 are sequentially arranged along the airflow direction from the air inlet to the air outlet; the two dry surface air coolers 20 are arranged in parallel in an inverted V shape at the air outlet of the unit shell 10;
in this embodiment, the unit housing 10 adopts an "L" shaped structure, so that the length of the unit housing 10 is obviously reduced, and the occupied area is reduced. The working modes and principles of the chemical filter 30, the chemical filter 31, the fan 40 and the dry surface cooler 20 are the same as those of the above embodiments, and are not described herein again.
In order to improve the filtering effect of the air treatment unit and remove harmful substances in the air in a targeted manner, a proper adsorbent layer can be selected according to the characteristics of the harmful substances in the air, for example, the air contains more alkaline gases, and an acidic adsorbent layer for adsorbing the alkaline gases can be adopted; preferably, when the air handling unit includes two or more chemical filters, at least one of the chemical filters has an activated carbon adsorbent layer for adsorbing volatile organic compounds, and at least one of the chemical filters has an alkaline adsorbent layer for adsorbing acidic gases or an acidic adsorbent layer for adsorbing alkaline gases; for example, with continued reference to fig. 3, the chemical filter 30 has an activated carbon adsorbent layer for adsorbing volatile organic compounds, the chemical filter 31 has a basic adsorbent layer for adsorbing acidic gases, the volatile organic compounds in the air are adsorbed and removed after the air passes through the chemical filter 30, and the acidic gases in the air are adsorbed and removed after the air passes through the chemical filter 31, thereby achieving the purpose of removing harmful substances in the air.
In order to improve the filtering effect of the air handling unit and prevent the secondary pollution of the activated carbon dust, preferably, the air handling unit further includes a high-efficiency and medium-efficiency filter disposed in the unit housing 10 and adjacent to the chemical filter, and the high-efficiency and medium-efficiency filter is located downstream of the chemical filter through which the air flow flowing from the air inlet to the air outlet flows; the number of high-medium efficiency filters can be selected according to the needs. It is worth mentioning that the high-medium efficiency filter must be adjacent to the chemical filter and downstream of the air flow through said chemical filter, if the air handling unit comprises one high-medium efficiency filter, several chemical filters, the high-medium efficiency filter being downstream of the air flow through the last chemical filter, for example, see fig. 3, the high-medium efficiency filter 50 being downstream of the air flow through the last chemical filter 31.
It should be noted that the high-efficiency and medium-efficiency filter meets the classification standard of the national standard GB/T14295-93 air filter, that is, the filtering efficiency E is greater than or equal to 70% and less than 99% under the rated air flow, although an air filter corresponding to the european standard may be used, which is well known to those skilled in the art and will not be described in detail herein.
To facilitate maintenance and replacement of the chemical filter, the air treatment unit is preferably provided with a plurality of access doors on the unit housing 10, such as an access door 60 between the chemical filter 31 and the high-medium efficiency filter 50, and an access door 61 between the dry surface cooler and the fan 40, with continued reference to fig. 3.
In order to reduce the noise generated during the operation of the air handling unit, preferably, the air handling unit further includes a sound absorbing material disposed on the fan section and/or on the inner wall of the casing 10 of the air outlet section; for example, with continued reference to FIG. 6, sound absorbing material 70 is disposed on the interior walls of the fan section unit housing 10, and as with further reference to FIG. 4, sound absorbing material 70 is disposed on the interior walls of the unit housing 10 of the fan and outlet sections. The sound absorbing material 70 is generally a porous material such as rock wool, centrifugal glass wool, etc., and in order to prevent the sound absorbing material 70 from scattering, it is necessary to cover the outer surface of the sound absorbing material with nylon cloth. It should be noted that the fan section refers to a section of the unit housing corresponding to the fan 40, and the air outlet section refers to a section of the unit housing corresponding to the air outlet.
To reduce vibration during operation of the air handling unit, the fan 40 is preferably a volute-less direct coupled fan, as is well known to those skilled in the art and will not be described in detail herein.
To sum up, the utility model provides an air treatment unit, fan, do surface cooler and chemical filter install in same unit casing, and fan, do the arrangement order of surface cooler and chemical filter in unit casing have multiple combination. The air treatment unit can adopt one or more chemical filters, and the chemical filters can also adopt a thicker adsorbent layer, so that the service life of the chemical filters is prolonged, and the continuous working time of the air treatment unit is prolonged. In addition, the air processing unit can carry out dry cooling treatment on the air while carrying out chemical filtration on the air, so that the temperature of a production workshop meets the requirement of production on the environmental temperature.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. An air handling unit, comprising: the air conditioner comprises a unit shell with an air inlet and an air outlet, and two chemical filters, a fan and a dry surface air cooler which are sequentially arranged in the unit shell along the flow direction of air flow from the air inlet to the air outlet; and one of the chemical filters is provided with an active carbon adsorbent layer for adsorbing volatile organic compounds, and the other chemical filter is provided with an alkaline adsorbent layer for adsorbing acid gas or an acidic adsorbent layer for adsorbing alkaline gas.
2. The air handling unit of claim 1, further comprising a high-medium efficiency filter disposed within the unit housing adjacent to the chemical filter, and wherein the high-medium efficiency filter is positioned downstream of the chemical filter from the air inlet to the air outlet.
3. An air treatment unit as claimed in claim 1 or claim 2 wherein the unit housing is provided with access doors.
4. The air handling unit of claim 3, further comprising sound absorbing material disposed on an inner wall of the fan section, and/or the outlet section unit housing.
5. The air handling unit of claim 4, wherein the fan is a voluteless direct fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220573118XU CN202955795U (en) | 2012-11-02 | 2012-11-02 | Air handling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220573118XU CN202955795U (en) | 2012-11-02 | 2012-11-02 | Air handling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955795U true CN202955795U (en) | 2013-05-29 |
Family
ID=48461362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220573118XU Expired - Lifetime CN202955795U (en) | 2012-11-02 | 2012-11-02 | Air handling unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202955795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266820A (en) * | 2016-12-30 | 2018-07-10 | 李仕清 | A kind of air circulating purifier |
-
2012
- 2012-11-02 CN CN201220573118XU patent/CN202955795U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266820A (en) * | 2016-12-30 | 2018-07-10 | 李仕清 | A kind of air circulating purifier |
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Granted publication date: 20130529 |