JPS6034038B2 - cooling box body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling box body that improves heat exchange in a cooler and extends the time when the air inlet side of the cooler is closed due to frost formation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a cooling box body such as a freezing/refrigerating showcase, the main body of which is composed of a heat insulating wall 3 having a gate 2 on the front. A cold air passage 5 in which a cooler 7 and a blower 8 are installed by disposing partition plates 4 at appropriate intervals from the inner wall, and a storage room 6 having a plurality of shelves 9 are formed. A blow-off port 10 and a suction port 11 are formed to face each other, and a forced circulation cold air flow sent out from the cold air passage 5 through the blow-off port 10 closes the closing port 2 and cools the storage chamber 6.

As shown in FIG. 2, in the cooler, fin groups 14a and 14b having a plurality of fins 14 orthogonal to the refrigerant pipe 13 are integrally held in two rows in parallel by left and right tube plates 15, and a suitable space is placed between the fin groups. Intermediate side channels 16 are formed with intervals. 1
Reference numerals 7 and 18 denote both inside and outside passages formed by installing the cooler 7 in the cold air passage with the bottom and front lower part facing the air inlet and the top facing the air outlet, and as shown in FIG. It is formed with an appropriate spacing between both wall surfaces of the plate and the front and back surfaces of the cooler, and is in a parallel relationship with the middle side passage 16 of the cooler.

Reference numeral 19 denotes a mirror-slanted guide part formed on the partition plate 4 near the top of the cooler 7, and a convex guide part provided on the heat insulating wall 3 near the top of the cooler 7, respectively. 17, 18, and acts as a resistor to narrow the width of the air outlet side of the cooler 7, and directs the cold air flow passing through the inner and outer passages 17, 18 to the air outlet side and upper part of the cooler 7 at the outlet side and near the outlet side. It has the effect of directing the

Note that the cold air passage 5 has intermediate and inner and outer passages 16, 17, 18.
Two coolers may be installed to form a In the cooling box body 1 configured in this way, heat exchange in the cooler 7 is explained. The cold air sent from the low pressure side to the high pressure side by the blower 8 passes through the cooler 7 as shown by the arrow in FIG. 3. heat is exchanged and a predetermined temperature is obtained. The cold air passing through the cooler 7 has a large resistance due to the plurality of soot tubes 13 that are perpendicular to the fins 14, and therefore passes through the cold soot tubes in a turbulent manner. On the other hand, the cold air passing through the intermediate side passage 16 and the inner and outer passages 17 and 18 is repeatedly merged and divided with the cool air disturbed by the cooler 7, thereby directly or indirectly exchanging heat therethrough. The pressure of the cold air passing through this side passage is increased by both guide portions 19 and 20, which serve as resistance, and its merging and separation with the cold air passing through the cooler 7 is promoted. As the heat exchange in the cooler 7 progresses, frost forms on the lower part of the fins on the air inlet side, and when this frost grows and the space between the fins on the air inlet side becomes clogged, the cold air on the air inlet side bypasses this frost and flows to each side. Road 16
, 17, and 18, and passes through the cooler 7 as described above, forming uniform frost on both the front and back surfaces of the fin groups 14a, 14b. That is, when the air inlet side of the cooler 7 is blocked by frost, the front and back surfaces of the fin groups 14a and 14b become new air inlet sides, which promotes heat exchange from the center of the cooler to the air outlet side. In addition, it is possible to uniformly frost the cooler 7, and to extend the time when the cooler 7 is closed due to mist formation. Therefore, it is possible to improve the heat exchange of the entire cooler 7, extend the frost formation time and reduce the number of times of defrosting, and even if the amount of frost on the food in the cooler 7 increases, it is possible to The flow rate of airflow is determined by each side passage 16, 17, 1.
8 to prevent outside air from entering the storage chamber 6 through the opening 2. As described above, according to the present invention, the air inlet area of the cooler, that is, the area where air enters the cooler can be increased by the intermediate and inner and outer side passages, and the time when the cooler is closed due to frost formation can be extended. At the same time, both the guide parts block the flow of cold air passing through both the inner and outer passages, increasing its pressure, and this cold air flow is directed toward the upper part of the cooler and the air outlet side, so that the upper part of the cooler and Heat can be exchanged on the air outlet side in the same way as on the inlet side, and heat exchange with the cold air flow can be performed throughout the cooler, greatly improving the efficiency of heat exchange.Moreover, frost formation is uniform, and the cooler In addition to reducing the number of times of defrosting, it is possible to prevent a decrease in the flow rate of the cold air flow that closes the opening by making the frost on the food uniform and allowing the cold air flow to pass through the intermediate and inner and outer side passages when the cooler is closed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the cooling box body of the present invention, FIG. 2 is an enlarged perspective view of the main part, and FIG. 3 is a vertical cross-sectional view of the main part. 4... Division plate, 7... Cooler, 13... Refrigerant pipe,
16...medial lateral tract, 17,18...medial lateral tract. Figure 1 Figure 3 Figure 2

Claims (1)

[Claims] 1 The main body is composed of a heat insulating wall having an opening on one side that is closed by the forced circulation cold air flow, and a partition plate is arranged at an appropriate interval from the inner wall of the heat insulation wall to send out the forced circulation cold air flow. A cooler and a blower are installed in the cold air passage, forming a cold air passage and a storage room, having at least two parallel rows of a plurality of fin groups that run perpendicular to the refrigerant pipes, and forming an intermediate side passage between the fin groups. and both inner and outer passages are formed in parallel with the intermediate side passage between both sides of the cooler and the insulation walls and partition plates facing each other, and the partition plates and insulation walls near the top of the cooler,
What is claimed is: 1. A cooling box body characterized by comprising a guide portion that narrows the width of the air outlet side of both the inner and outer passages and directs the cold air flow passing through the inner and outer passages toward the cooler side.