JPH10267459A - Air-cooled absorption freezing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact air-cooled absorption freezer of which installing area is small. SOLUTION: An air suction port is formed at a single surface, a substantial straight air blowing passage extending from the single surface suction port toward first and second air outlet ports 14a, 14b formed similarly at the single surface in opposite direction is formed, an air-cooled absorbing device 17 is installed at an upstream side of air flow in the passage and an air-cooled condenser is installed at a downstream side of the air passage. Due to this fact, as compared with the prior art in which a plurality of surfaces of a main body of the device must be provided with air inlet ports, the main body of the device can be made compact in size and it is satisfactory for the device to be installed with a relative small space between a suction space corresponding to the single air suction surface and a space required for its side installation. In addition, since a condenser 19 is placed at a downstream side of the absorbing device 17, a temperature of the sucked air in the absorbing device is increased under heat exchanging operation passed through the condenser and its absorbing performance is not decreased as found in the prior art. As a result, it becomes possible to make a small-sized absorbing device 17 and subsequently it becomes also possible to make an entire small-sized device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-cooled absorption refrigeration system.

[0002]

2. Description of the Related Art In a conventional air-cooled absorption refrigeration system, as shown in FIGS. The suction ports 3a to 3c are formed, and the air-cooled absorbers 4a and 4b and the air-cooled condenser 5 are arranged inside the suction ports 3a to 3c, and the evaporators 6 and 6 are installed above the air-cooled absorbers 4a and 4b. ing.

Then, the air sucked from the air inlets 3a to 3c by the fan 2 is supplied to the air-cooled absorbers 4a and 4c.
After cooling the absorbing liquid and the refrigerant vapor through the air cooling condenser 5 and the air-cooled condenser 5, the air is blown out from the air outlet 7 on the upper side of the apparatus main body 1 (for example, as a known example similar thereto, Japanese Patent Application Laid-Open No. 1-225868). Reference).

[0004]

However, such a conventional configuration has the following problems.

(1) Since the air suction ports are formed on three different sides of the apparatus main body, a plurality of air passages to the fan are required, and an extra space is required in the apparatus main body.
As the device body becomes larger, air suction spaces S ₁ , S ₂ , and S ₃ are required outside of the device body in three directions. For example, as shown by phantom lines in FIG. including the work space S ₄ during service, in addition to the area occupied by the apparatus main body, it is necessary to considerably large installation space S of the four sides direction.

(2) A configuration in which the air-cooled condenser is provided on the upstream side of the air-cooled absorber has also been proposed. In this case, the temperature of the air supplied to the air-cooled absorber increases, and the absorption performance of the air-cooled absorber is increased. It is necessary to increase the size of the air-cooled absorber to ensure (heat dissipation performance). As a result, the size of the apparatus main body increases, the cost increases, and the occupied area increases.

[0007]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving such a problem. In order to achieve the object, the present invention is provided with the following means for solving the problem. I have.

That is, first, the invention of claim 1 of the present application is configured such that an air-cooled absorber is disposed upstream of an air flow of an air passage from an air inlet to an air outlet, and an air-cooled condenser is disposed downstream thereof. ing.

Therefore, it is possible to form a single air passage having a single air inlet and a single air outlet corresponding to each other. Compared to a configuration in which a suction port is provided and a plurality of air passages must be formed, the apparatus body can be formed smaller and more compact, and the air suction corresponding to a single air suction port surface A relatively small installation space of the space and the work space required for the installation work is sufficient.

Further, since the air-cooled condenser is located downstream of the air flow of the air-cooled absorber, the temperature of the intake air of the air-cooled absorber rises due to heat exchange through the air-cooled condenser, as in the prior art.
The absorption performance is not reduced. as a result,
The size of the air-cooled absorber can be reduced, and the size of the absorption refrigeration apparatus can be reduced and made compact, which contributes to the cost reduction of the apparatus.

Further, it is possible to connect and install the apparatus main bodies.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the air-cooled condenser is located particularly at a lower downstream side of the air-cooled absorber and is provided so as to extend in both left and right directions. I have.

[0013] In the air-cooled absorber, the absorbing action of the refrigerant vapor proceeds by flowing the absorbing liquid from the upper side to the lower side,
On the lower side, the absorbing operation is substantially completed. Therefore, if the air-cooled condenser is provided corresponding to the lower position of the low-temperature air-cooled absorber, the temperature of the air sucked into the air-cooled condenser even at the downstream side of the air-cooled absorber hardly increases. And does not significantly affect the condensation performance. In addition, if it is provided on the lower side, the vertical width is reduced, but since it extends in both the left and right directions, the necessary heat transfer area is sufficiently ensured.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the air outlet is disposed obliquely upward, and a fan shaft corresponding to the air outlet is provided. A fan is provided that is disposed obliquely upward.

Therefore, in this configuration, the flow of air blown to the outside is directed upward, and the installation area on the front side can be reduced.

According to a fourth aspect of the present invention, in the configuration of the first or second aspect, the air outlet is disposed in a horizontal direction, and the fan shaft is moved in the horizontal direction corresponding to the air outlet. Is provided.

Therefore, in this configuration, the flow velocity distribution of the air flow in the air-cooled absorber and the air-cooled condenser becomes uniform, so that the absorption / condensation performance is further improved and the noise is reduced.

[0018]

As described above, according to the air-cooled absorption refrigeration apparatus of the present invention, it is possible to provide an air-cooled absorption refrigeration apparatus which is compact in size, occupies a small area, has a small installation area, and is inexpensive. Become.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 to 5 show the configuration of an air-cooled absorption refrigeration apparatus according to Embodiment 1 of the present invention.

In the drawing, reference numeral 10 denotes an apparatus main body (main body housing) of the air-cooling absorption refrigeration apparatus. As shown in FIG. 1, for example, the apparatus main body 10 has a compact shape that is thin in the front and rear direction and long in the horizontal direction. By inclining in a plane, the upper internal space 1
The lower inner space 12b is formed to have a predetermined width wider in the front-rear direction than the lower inner space 12b.

The first and second left and right 2 are located on a vertically inclined surface 13 formed by the inclined portion.
A pair of circular air outlets 14a and 14b are formed at predetermined intervals in both the left and right directions, and are located inside (inside the fan guide) thereof and a first and second two sets of right and left fans (propeller fans). 15a and 15b are respectively installed so as to be able to blow and rotate.

On the other hand, the vertical wall portion 1 on the rear side of the apparatus body 10
0b, a substantially rectangular air inlet 16 is formed substantially entirely, and an air-cooled absorber 17 having a flat structure and a size substantially similar to the rear vertical wall portion 10b is formed inside the rectangular air inlet 16. The air-cooled absorber 7 is disposed in an upright state while leaving a space for installing a high-temperature regenerator 21, a refrigerant pump 22 for supplying condensed water, a solution pump 23, and the like. The evaporator 18 is installed to extend in the entire width direction on both the left and right sides using the internal space 12a.

At the lower part of the air-cooled absorber 7, an air-cooled condenser 19, which is located on the air discharge side (downstream of the air flow) and has a reduced vertical width, like the air-cooled absorber 17, is provided. On the lower side, a high-temperature regenerator 21, a refrigerant pump 22,
It extends in both the left and right directions while leaving the installation space for the solution pump 23 and the like, and is juxtaposed in an upright state.

At the bottom of the lower internal space 12b in the apparatus body 10, a refrigerant pump 22 for supplying condensed water from the high-temperature regenerator 21, an air-cooled condenser 19 to the evaporator 18, and a solution pump 23, and other various necessary equipment (low-temperature heat exchange, high-temperature heat exchange) 24, 25 are installed.

Therefore, in the above configuration,
When the second fans 15a and 15b are driven, the air sucked from the air suction port 16 first passes through the air-cooled absorber 17 and further passes through the air-cooled condenser 19, so that the apparatus body 1
In FIG. 2, the air flows in one direction in the air passage as indicated by an arrow in FIG. 2, and the air flows from the first and second air outlets 14a and 14b opposed via the first and second fans 15a and 15b to the outside. Is blown out.

That is, in the above configuration, the air suction port 16
Are formed on a single surface, and a substantially straight air passage having a small ventilation resistance is formed from the air suction port 16 on the single surface to the first and second air outlets 14a and 14b formed on the same single surface in the opposite direction. An air-cooled absorber 17 is provided on the upstream side of the air flow in the air passage, and an air-cooled condenser 19 extending in both the left and right directions is provided on the lower downstream side.

Therefore, as compared with a conventional configuration in which air suction ports are provided on a plurality of surfaces in different directions of the apparatus main body to form a plurality of air passages, the air passage is formed from a single-surface air suction port. 1 continuous in the direction of a single surface air outlet
A book is sufficient, and the apparatus main body can be formed small and compact, and as shown in FIG.
It can be shared and a space S ₂ required for the air suction space S ₁ and maintenance services thereunder one side corresponding to a single air suction surface, is substantially I small only air suction space S ₁ Required installation space S (S = S ₁ )
If you have it, you can install it.

Further, since the air-cooled condenser 19 is located on the downstream side of the air flow of the air-cooled absorber 17, the temperature of the intake air of the air-cooled absorber 17 is increased by the heat exchange through the air-cooled condenser 19 as in the prior art. Also, the absorption performance is not reduced. As a result, the size of the air-cooled absorber 17 can be reduced, and the size of the absorption refrigeration apparatus itself can be reduced, which contributes to the cost reduction of the apparatus. In addition, since the air-cooled condenser 19 cannot be widened in the vertical direction in order to be located on the lower side, a sufficient heat transfer area can be secured because the air-cooled condenser 19 is formed longer in the left-right direction.

Further, as a result, a plurality of apparatus main bodies 10 can be connected and installed.

As described above, the air-cooled condenser 19 is located on the downstream side of the air flow.
Numeral 9 is provided corresponding to the lower portion of the air-cooled absorber 17 in which the absorbing action progresses downward from the upper side and the absorbing action is substantially completed. Therefore, the temperature of the air sucked into the air-cooled condenser 19 does not rise so much,
It does not have much effect on the condensation performance.

(Embodiment 2) FIGS. 6 to 8 show the configuration of an air-cooled absorption refrigeration apparatus according to Embodiment 2 of the present invention.

This device has the same basic structure as that of the first embodiment, but differs from the first embodiment in that it has a vertical The wall portion 10a is configured to be vertically straight without being inclined in the shape of a trapezoid, and the first and second air outlets 14 described above are formed.
a and 14b are opened in the horizontal direction, and the fan shafts of the first and second fans 15a and 15b are also arranged horizontally in accordance with the openings, so that the air suction port 16, the air-cooled absorber 17, and the air-cooled condensate respectively. This is characterized in that it is opposed to the vessel 19 in parallel. In addition, the condensed water from the air-cooled condenser 19 is used, for example, by using a single-effect refrigeration circuit configuration without using the above-described refrigerant pump 22 to increase the condensing pressure of the air-cooled condenser 19. In this way, the head is secured and the refrigerant pump 2 can be supplied to the evaporator 18.
2 is not required, the space for installing the refrigerant pump at the bottom of the apparatus main body 10 is eliminated, the restrictions on the layout of the apparatus are reduced, and the apparatus main body 10 can be further reduced in size.

In this configuration, the same operation as in the first embodiment can be obtained.
As is clear from FIG. 7, the ventilation resistance is reduced, and the flow velocity distribution of the air flow to the air-cooled absorber 17 is particularly uniform, so that there is an advantage that the absorption performance is further improved and the noise is reduced.
Further, since the inclined surface portion does not need to be formed, the thickness of the main body in the front-rear direction can be made thinner and flatter, so that the air-cooled absorption refrigeration apparatus can be made more compact.

In this case, in this case, the apparatus main body 1
0, the width in the front-rear direction of the upper internal space 12a is equal to the width in the front-rear direction of the lower internal space 12b of the first embodiment.
Since the width of itself in the front-rear direction can be widened, the evaporator 18 can be thinned accordingly, and the vertical height can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of an air-cooled absorption refrigeration apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the same device taken along the line 1A-A of FIG.

FIG. 3 is a cross-sectional view of the same device taken along line 2BB of FIG.

FIG. 4 is a cross-sectional view of the same device, taken along the line CC in FIG. 2;

FIG. 5 is a sectional view of the same device, taken along the line DD in FIG. 2;

FIG. 6 is a sectional view of an air-cooled absorption refrigeration apparatus according to Embodiment 2 of the present invention.

FIG. 7 is a sectional view of the same device taken along the line 6E-E.

FIG. 8 is a cross-sectional view of the same device taken along line 6F-F of FIG.

FIG. 9 is a perspective view of an apparatus body of a conventional air-cooled absorption refrigeration apparatus.

FIG. 10 is a sectional view taken along the line 9G-G of FIG.

FIG. 11 is a sectional view taken along the line HH of FIG.

FIG. 12 is a cross-sectional view of the same device taken along line II of FIG.

[Explanation of symbols]

10 is an apparatus main body, 10a is a front vertical wall portion, 10b is a rear vertical wall portion, 14a is a first air outlet, 14b is a second air outlet, 15a is a first fan, and 15b is a second fan. , 16 is an air inlet, 17 is an air-cooled absorber, 18 is an evaporator, and 19 is an air-cooled condenser.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Katsuhiro Kawabata, 1304 Kanaokacho, Sakai-shi, Osaka Daikin Industries Inside the Kanaoka Plant of Sakai Seisakusho Co., Ltd. (72) Noriyuki Okuda 1304, Kanaokacho, Sakai-shi, Osaka Daikin Industries (72) Inventor Koichi Yasuo 1304 Kanaoka-cho, Sakai-shi, Osaka Daikin Industry Co., Ltd. Inside the Sakai Manufacturing Kanaoka Plant (72) Inventor Shiro 1304, Kanaoka-cho, Sakai-shi, Osaka Daikin Industries, Ltd. Inside the Sakai Plant Kanaoka Plant (72) Inventor Kazuki Takeuchi 1304 Kanaokacho, Sakai City, Osaka Daikin Industries Inside the Sakai Plant Kanaoka Plant

Claims (4)

[Claims] 1. An air-cooled absorption refrigeration system, wherein an air-cooled absorber is disposed upstream of an air flow in an air passage from an air inlet to an air outlet, and an air-cooled condenser is disposed downstream thereof. 2. The air-cooled absorption refrigeration system according to claim 1, wherein the air-cooled condenser is located below the air-cooled absorber and extends in both left and right directions. 3. The air outlet is disposed obliquely upward and a fan having a fan shaft disposed obliquely upward corresponding to the air outlet is provided. Or the air-cooled absorption refrigeration apparatus according to 2. 4. The air cooling system according to claim 1, wherein the air outlet is arranged in a horizontal direction, and a fan having a fan shaft arranged in a horizontal direction corresponding to the air outlet is provided. Absorption refrigeration equipment.