Utility model content
The purpose of this utility model is to overcome existing spectrophotometer can not carry out asking of high/low temperature test
Topic, it is provided that a kind of spectrometer device, this spectrometer device, when high/low temperature is tested, especially exists
Accuracy is ensure that during close to zero degree or sub-zero low-temperature test.
This utility model provides a kind of spectrometer device, and wherein, this spectrometer device includes
The constant temperature high/low temperature circulatory mediator machine connected by pipeline and spectrophotometer, wherein, described spectrophotometric
The sample chamber of meter is provided with sample cell shelf, inside this sample cell shelf, forms sample cell space, described sample
Pond frame inner hollow is also provided with circulatory mediator entrance and circulatory mediator outlet, described circulatory mediator entrance and
Circulatory mediator outlet is connected with described constant temperature high/low temperature circulatory mediator machine by circulatory mediator pipeline;Described
Spectrometer device also includes feeder or vacuum extractor, and this feeder or vacuum extractor are even
Being connected to gas pipeline, this gas pipeline optionally passes through described constant temperature high/low temperature circulatory mediator machine, and should
The outlet of gas pipeline is arranged in described sample chamber.
Preferably, described spectrometer device includes feeder, and described gas pipeline is through institute
State constant temperature high/low temperature circulatory mediator machine.
Preferably, described gas pipeline is provided with 2n × m branch, and the outlet of each branch is with described
The surface of sample cell is relative, and wherein n is the integer of 1-4, and m is the face number of the sample cell needing purging.
Preferably, the outlet of face correspondence 1-2 the branch of each sample cell needing purging.
Preferably, described sample chamber is the sample chamber for single beam test with a sample cell, or
Person is the sample chamber for dual-beam test with two sample cells;When described sample chamber is for monochromatic light
During the sample chamber that bundle is tested, the face number needing the sample cell of purging is 2;When described sample chamber is for being used for
During the sample chamber that dual-beam is tested, the face number needing the sample cell of purging is 4.
Preferably, the outlet of the branch of described gas pipeline is apart from the level of the outer surface of described sample cell shelf
Distance is 0-20mm.
Preferably, a diameter of 0.2-16mm of the branch of described gas pipeline.
Preferably, described circulatory mediator pipeline includes circulatory mediator input channel and circulatory mediator outlet tube
Road, described circulatory mediator input channel and described gas pipeline are wrapped in jointly or the most at least in part
In first jacket.
Preferably, described circulatory mediator input channel and described gas pipeline wrap up jointly or the most all
In the first jacket.
Preferably, during circulatory mediator output channel is wrapped in the second jacket at least in part.
By technique scheme, spectrometer device of the present utility model achieves high/low temperature test,
Especially achieve close to zero degree or sub-zero low-temperature test, by the constantly purging of dry gas or
Person carries out evacuation by vacuum extractor can effectively prevent sample cell and cuvette fogging or frosting, and
And owing to dry gas has reached the specified temp as sample before arriving sample cell, be therefore dried
The purging of gas does not results in the fluctuation of test temperature, makes test result the most credible.
Other features and advantages of the utility model will give in detailed description of the invention part subsequently in detail
Explanation.
Detailed description of the invention
Hereinafter detailed description of the invention of the present utility model is described in detail.It should be appreciated that herein
Described detailed description of the invention is merely to illustrate and explains this utility model, is not limited to this practicality
Novel.
In this utility model, in the case of illustrating on the contrary, the noun of locality of use as " upper and lower,
Inside and outside " typically refer to reference to shown in the drawings upper and lower, inside and outside, the connection term of use is typically
Refer to reference to annexation shown in the drawings.
This utility model provides a kind of spectrometer device, as depicted in figs. 1 and 2, wherein, is somebody's turn to do
Spectrometer device includes constant temperature high/low temperature circulatory mediator machine 2 and the spectrophotometer connected by pipeline
3, wherein, the sample chamber 300 of described spectrophotometer 3 is provided with sample cell shelf 302, this sample cell
Forming sample cell 301 space inside frame 302, described sample cell shelf 302 inner hollow is also provided with circulation
Medium inlet 303 and circulatory mediator outlet 304, described circulatory mediator entrance 303 and circulatory mediator outlet
304 are connected with described constant temperature high/low temperature circulatory mediator machine 2 by circulatory mediator pipeline;Described light splitting light
Degree meter equipment 3 also includes feeder 1 or vacuum extractor, and this feeder 1 or vacuum extractor are even
Being connected to gas pipeline 4, this gas pipeline 4 optionally passes through described constant temperature high/low temperature circulatory mediator machine 2,
And the outlet of this gas pipeline is arranged in described sample chamber 300.
In this utility model, described spectrometer device can use feeder 1 carry out supplying from
And sample chamber 300 is carried out gas purging, it is possible to use vacuum extractor carries out evacuation to sample chamber,
Two ways all can realize the steam in removing sample chamber thus prevent sample cell and cuvette frosting
Or fogging.When using vacuum extractor, gas pipeline can need not move through the circulation of described constant temperature high/low temperature
Medium machine;When using feeder, it should gas is carried out temperature control and make the temperature of gas with
The temperature of circulatory mediator is essentially identical, and this temperature controlled mode can be by additionally setting at feeder
Put temperature control system, so that having reached predetermined temperature from feeder gas out, or,
Preferably, by gas pipeline 4 through described constant temperature high/low temperature circulatory mediator machine 2, thus gas is at constant temperature
High/low temperature circulatory mediator machine 2 reaches the temperature essentially identical with circulatory mediator.For the ease of operation, this
Utility model is preferably used feeder 1, and gas pipeline 4 is situated between through the circulation of described constant temperature high/low temperature
Matter machine 2.
In this utility model, when using feeder 1 to supply, gas selects the gas being dried,
The selection of this gas not particularly requirement, has relative inertia, i.e. will not make equipment itself
Become impact also will not carry out reacting with the sample of test, such as, can be the nitrogen being dried.
In this utility model, purging for the ease of gas, described gas pipeline 4 can be divided into multiple points
, this branch can separate in any position of gas pipeline, it might even be possible to directly divides from feeder
Go out multiple gas pipeline.Described gas pipeline 4 can be provided with 2n × m branch 401, each branch
Outlet relative with the surface of described sample cell, wherein n is the integer of the integer of 1-4, preferably 1-2,
M is the face number of the sample cell needing purging.That is, face correspondence 1-4 of each sample cell needing purging
The outlet of branch, the outlet of preferably corresponding 1-2 branch, the outlet of the most corresponding 1 branch.
In this utility model, the not particularly requirement of the placement direction of the branch 401 of described gas pipeline,
As long as not hindering light to pass from sample cell (being wherein placed with the cuvette of sample), therefore,
The outlet of the branch 401 of described gas pipeline is positioned at lower end and/or the upper end of the optical transmission window of sample cell, when
Gas purging is carried out from bottom to top, as in figure 2 it is shown, enter from the top down when being positioned at upper end when being positioned at lower end
Circulation of qi promoting body purging (not shown in FIG.), preferably only carries out gas purging from bottom to top.Described gas tube
The angle that the branch 401 in road places be usually on the premise of not hindering light to pass with vertical direction in
30-70 degree angle.The branch 401 of the gas pipeline described in Fig. 2 only depicts near sample cell
The part of 301, is only signal.
In this utility model, the outlet of the branch 401 of described gas pipeline is apart from described sample cell shelf
There is no particular limitation for the horizontal range of outer surface, such as, can be 0-20mm, preferably 0-10mm,
More preferably 0.1-5mm.
In this utility model, there is no particular limitation for the diameter of the branch 401 of gas pipeline, such as may be used
Think 0.2-16mm, preferably 1-10mm.In use, the gas being dried is from gas pipeline
In branch 401, the speed of blowout is 10-200ml/min, preferably 20-80ml/min.
In this utility model, described sample chamber 300 can be have a sample cell for single beam
The sample chamber of test, it is also possible to for having the sample chamber for dual-beam test of two sample cells.Work as institute
Stating sample chamber 300 is that the face number needing the sample cell of purging is 2 when the sample chamber of single beam test
Individual.When described sample chamber 300 is for the sample chamber of dual-beam test, as in figure 2 it is shown, need to blow
The face number of the sample cell swept is 4.The face of the described sample cell needing purging is the face with window, also
The face of the printing opacity of cuvette when being exactly for detecting.
In fig. 2, the solid arrow through sample cell represents sample arm, through the dotted line arrow of sample cell
Head represents reference light paths.
In this utility model, as in figure 2 it is shown, described sample cell shelf 302 is positioned over temperature bath frame 305
On, the knot that described sample cell shelf 302 and temperature bath frame 305 can be inner hollow and inside communicates
Structure, circulatory mediator exports 304 at sample by the circulatory mediator entrance 303 on sample cell shelf and circulatory mediator
Product pond frame 302 and the flowing of temperature bath frame 305 inner loop.
In this utility model, described circulatory mediator pipeline can include circulatory mediator input channel 5 and follow
Ring medium output channel 6.In order to ensure the constant of temperature, it is preferable that described circulatory mediator input channel
5 and described gas pipeline 4 jointly or be the most at least in part wrapped in the first jacket 7, more excellent
Selection of land, described circulatory mediator input channel 5 and described gas pipeline 4 are wrapped in jointly or the most all
In first jacket 7.Wherein, described " jointly or independently " described circulatory mediator input pipe is referred to
Road 5 and described gas pipeline 4 can be wrapped in same jacket jointly, it is also possible to be wrapped in respectively
In two jackets.As it is shown in figure 1, the first jacket 7 is only signal in Fig. 1, the most all draw.
In this utility model, described circulatory mediator output channel 6 can wrap up without jacket,
Can also at least partially or totally be wrapped in the second jacket 8.
In this utility model, circulatory mediator and for purging gas at constant temperature high/low temperature circulatory mediator machine
Enter after reaching the temperature needed in 2 in sample chamber 300, it is achieved thereby that sample is carried out temperature control
System, and owing to dry gas has reached the specified temp as sample before arriving sample cell, because of
The purging of this dry gas does not results in the fluctuation of test temperature, makes test result the most credible.Described follow
There is no particular limitation can be such as one or more in water, ethanol and ethylene glycol for ring medium, and
Other will not produce the liquid of impact to equipment.
In this utility model, described feeder, constant temperature high/low temperature circulatory mediator machine and spectrophotometer
Etc. each device and parts, all there is no particular limitation, uses the product being commercially available.Described light splitting
Photometer can be the spectrophotometer that liquid is tested by various types of use cuvette, such as may be used
Think ultraviolet-visible spectrophotometer, ultraviolet-visible-near infrared spectrometer, visible spectrophotometer,
Ultraviolet spectrophotometer, spectrofluorophotometer, and liquid tested by other use cuvette
Spectrophotometer.
According to this utility model one specific embodiment, as depicted in figs. 1 and 2, circulatory mediator exists
The temperature reaching in constant temperature high/low temperature circulatory mediator machine 2 to need is later by being wrapped in the first jacket 7
Circulatory mediator input channel 5 enter in the sample chamber 300 in spectrophotometer 3, pass through circulatory mediator
In the sample cell shelf 302 that entrance 303 enters, this circulatory mediator is sample cell shelf 302 He of inner hollow
Temperature bath frame 305 flows, the sample in the cuvette being placed in sample cell 301 is carried out heat friendship
Change so that the sample in cuvette reaches the temperature identical with circulatory mediator set in advance, then from circulation
The circulatory mediator output channel 6 that media outlet 304 wraps up through the second jacket 8 returns to constant temperature high/low temperature
In circulatory mediator machine 2, thus realize the circulation of circulatory mediator.When the temperature set is as being higher than and close to 0
When spending or be less than 0 degree, easy frosting or fogging on sample cell and cuvette, in this case, supply
Device provides the gas (such as nitrogen) being dried, and this gas being dried is high through constant temperature by gas pipeline 4
Cold cycle medium machine 4 also reaches the temperature identical with circulatory mediator, wherein then at the first jacket
The parcel of 7 enters sample chamber 300.Described gas pipeline 4 is divided into 4 branches 401, these 4 branches
401 windows of a corresponding sample cell in sample bin respectively, and with the angle with 45 degree of angles of vertical direction
The face of the cuvette exposed in the window of sample cell is purged by degree from the bottom up, and the outlet of branch is positioned at
The lower end of the window of sample cell and passing through of light will not be hindered, a diameter of 1.6mm of branch, point
The outlet propped up is 1mm with the horizontal range of the outer surface of sample cell shelf, and the speed of gas purging is 50
ml/min.By spectrometer device of the present utility model, do not have when detecting at low temperatures
Fogging or frost, test result is accurate.
Preferred implementation of the present utility model described in detail above, but, this utility model does not limit
Detail in above-mentioned embodiment, in technology concept of the present utility model, can be to this
The technical scheme of utility model carries out multiple simple variant, and these simple variant belong to of the present utility model
Protection domain.It is further to note that each the concrete skill described in above-mentioned detailed description of the invention
Art feature, in the case of reconcilable, can be combined by any suitable means, in order to avoid
Unnecessary repetition, various possible compound modes are illustrated by this utility model the most separately.Additionally, this
Combination in any can also be carried out, as long as it is without prejudice to this between the various different embodiment of utility model
The thought of utility model, it should be considered as content disclosed in the utility model equally.